阅读说明：本技术 一种圆盘切割机及其控制方法 (Disc cutting machine and control method thereof ) 是由 林智芳 洪培英 吴江文 黄嘉鸿 于 2021-07-02 设计创作，主要内容包括：本发明公开了一种圆盘切割机及其控制方法,属于石材加工机械设备技术领域,包括机架、轨道、圆锯片、旋转控制组件、升降装置和给进装置,机架安装在轨道上并可沿轨道长度方向运动,升降装置固定安装在机架上,旋转控制组件安装在升降装置输出端并可在机架上升降运动；圆锯片中心固定安装在旋转控制组件输出端；机架上还安装有控制器；控制方法包括：启动切割机,控制水平气缸将锯片调节到指定横向位置,进入向下给进模式,开始切割直至指定深度；进入向前给进模式,继续切割直至指定距离；保持锯片旋转,升起锯片完成一次切割。本发明的有益效果是：通过控制器控制锯片旋转速度以及锯片升降、前后给进速度,能使锯片不容易崩坏且不影响工作效率。(The invention discloses a disc cutting machine and a control method thereof, belonging to the technical field of stone processing machinery equipment, and comprising a rack, a track, a circular saw blade, a rotary control component, a lifting device and a feeding device, wherein the rack is arranged on the track and can move along the length direction of the track; the center of the circular saw blade is fixedly arranged at the output end of the rotary control component; the rack is also provided with a controller; the control method comprises the following steps: starting the cutting machine, controlling the horizontal cylinder to adjust the saw blade to a specified transverse position, entering a downward feeding mode, and starting cutting until a specified depth is reached; entering a forward feeding mode, and continuing cutting until a specified distance is reached; the saw blade is kept rotating, and the saw blade is lifted to finish one cutting. The invention has the beneficial effects that: the controller controls the rotating speed of the saw blade, the lifting speed and the front and back feeding speed of the saw blade, so that the saw blade is not easy to collapse and the working efficiency is not influenced.)

1. A circular saw blade cutting machine is characterized by comprising a rack, a track, a circular saw blade, a rotary control assembly for controlling the circular saw blade to rotate, a lifting device for controlling the circular saw blade to lift and a feeding device for controlling the circular saw blade to feed forwards and backwards along the track direction, wherein the rack is installed on the track and can move along the length direction of the track; the center of the circular saw blade is fixedly arranged at the output end of the rotary control assembly; and the rack is also provided with a controller for controlling the circular saw blade to lift, feed forwards and backwards and rotate.

2. The disc cutting machine according to claim 1, wherein the rotation control assembly comprises a control box, a variable speed motor and a saw blade rotating shaft, the variable speed motor is fixedly mounted on the control box, the saw blade rotating shaft is mounted on a side wall of the control box, and an output end of the variable speed motor controls the saw blade rotating shaft to rotate.

3. The disc cutting machine according to claim 1, wherein the frame includes two columns arranged in a front-rear direction of the rail, and the elevating device is fixedly installed on the columns.

4. A disc cutting machine according to claim 3, wherein the vertical column is provided with a lifting slide rail in a vertical direction, the output end of the lifting device is provided with a slide plate, the slide plate is positioned on the lifting slide rail and can slide along the length direction of the slide rail, and the rotation control assembly is arranged on the slide plate.

5. The disc cutting machine according to claim 4, wherein a horizontal slide rail is provided on a side of the slide plate away from the column, a horizontal slide block is fixedly installed at a position of the rotation control assembly corresponding to the horizontal slide rail, and the horizontal slide block is sleeved inside the horizontal slide rail.

6. The disc cutting machine according to claim 5, wherein the control box is provided with a horizontal cylinder, the expansion direction of the horizontal cylinder is parallel to the length direction of the horizontal slide rail, and the rotary control assembly is fixedly arranged at the output end of the horizontal cylinder.

7. The disc cutting machine according to claim 2, wherein the variable speed motor controls the saw blade to rotate through a saw blade rotating shaft, a resistance sensor for monitoring the resistance of the saw blade and a vibration sensor for monitoring the vibration of the rotating shaft are mounted on the saw blade rotating shaft, and the output end of the resistance sensor and the output end of the vibration sensor are connected with the input end of the controller.

8. A control method of a disc cutting machine is characterized by comprising the following control steps:

the method comprises the following steps that firstly, a cutting machine is started, a horizontal cylinder is controlled to adjust a circular saw blade to a specified transverse position, a downward feeding mode is entered, and cutting is started until the circular saw blade is cut to a specified depth;

step two, entering a forward feeding mode, and continuing cutting until the cutting distance is reached;

and step three, keeping the saw blade to continuously rotate, and lifting the saw blade of the cutting machine to finish one-time cutting operation.

9. The control method of a disc cutting machine according to claim 8, wherein in the downward feed mode, the downward feed speed v1 satisfies the following relationship:

where f01 represents the standard frictional resistance for downward feed, v01 represents the set speed for downward feed, k11 represents the first threshold coefficient of friction, and k12 is the second threshold coefficient of friction.

10. The method as claimed in claim 8, wherein in the first and second steps, the vibration of the rotating shaft of the saw blade is monitored, and when the vibration amplitude is greater than a set value, the rotational angular velocity of the saw blade is reduced until the vibration amplitude is less than or equal to a set range.

Technical Field

The invention relates to the technical field of stone processing mechanical equipment, in particular to a disc cutting machine and a control method thereof.

Background

The existing stone mining machinery for mining mines is generally adopted, and the stone mining machinery is developed from the initial stage that a single saw is provided with a single saw blade to the stage that two ends of a main shaft of the single saw are respectively provided with a plurality of saw blades, so that the stone mining of the stone mining machine is more and more convenient, and the stone mining efficiency is gradually improved. However, the properties of stones mined by the conventional quarrying machine are not completely the same in the mining process, the stones in a certain part of the mine may have higher or lower hardness than the stones in another part, and the effects of resistance and the like received by the stones with different hardness when the saw blade cuts the stones are different.

For example, the invention patent with the publication number of CN102022117B discloses a double-spliced adjustable-distance mine quarrying machine, which comprises a machine base, upright posts and a sawing machine, wherein a sliding plate with a transverse guide groove is respectively pivoted on two upright post guide rails, two ends of a gear box are slidably pivoted in the transverse guide grooves of the two sliding plates, and a synchronous lifting driving mechanism is pivoted between the two sliding plates and the upright posts on the same side; the gear box is divided into a gear cavity and a cavity, the gear cavity is of a three-shaft structure and sequentially comprises a motor shaft, an intermediate shaft and an output shaft, the three shafts are in meshing transmission through two groups of gear sets, and the end face of the motor is fixedly suspended on the side face of the gear box; the sliding plate is pivoted with two gearboxes of two independent sawing machines side by side, the two gearboxes rotate 180 degrees mutually, a motor hung on the side surface of the gearbox can be inserted into a cavity of the other gearbox, and saw blades on output shafts of the two gearboxes are positioned on the far side and on the same axis; a baffle is fixed at the middle position of the two sliding plates, and a driving oil cylinder is respectively arranged between the baffle and the two gearboxes, so that the position of the saw blade is adjusted by the action of the oil cylinder. This quarrying machine can't adjust to saw bit rotational speed, the feeding motion of decurrent forward direction in cutting process to the condition such as easily lead to the saw bit to collapse takes place, reduces saw bit life and influences the operating efficiency, raise the cost.

Disclosure of Invention

The problems that in the prior art, the hardness of a part of stone materials on a mine mined by a quarrying machine is possibly higher or lower than that of another part of stone materials in the mining process, the rotation speed of a saw blade and the feeding motion in the downward and forward directions cannot be adjusted in the cutting process of the existing quarrying machine, the saw blade is easy to break during operation, the operation efficiency is reduced and the like are solved. The invention provides a disc cutting machine and a control method thereof, wherein the rotation speed, the forward and backward feeding motion and the lifting motion of a saw blade are controlled by a controller, so that the saw blade can be subjected to speed regulation when cutting stones with different hardness, the normal use of the saw blade is ensured, the saw blade is not easy to break, and the working efficiency is not influenced. The specific technical scheme is as follows:

a circular disc cutting machine comprises a rack, a track, a circular saw blade, a rotary control assembly for controlling the circular saw blade to rotate, a lifting device for controlling the circular saw blade to lift and a feeding device for controlling the circular saw blade to feed forwards and backwards along the track direction, wherein the rack is installed on the track and can move along the length direction of the track; the center of the circular saw blade is fixedly arranged at the output end of the rotary control assembly; and the rack is also provided with a controller for controlling the circular saw blade to lift, feed forwards and backwards and rotate.

The traditional cutting machine cuts stones at a set operation speed in the process of cutting the quarried stones, the resistance is suddenly increased when the harder stones at a certain position are cut, the rotation speed of a saw blade and the feeding speed of the saw blade forwards cannot be adjusted timely, and then the saw blade is broken or even burnt, even violent vibration occurs, so that the saw blade is broken and scattered, hurts pedestrians and brings serious potential safety hazards; through controller control feeding device, elevating gear and rotation control subassembly, thereby control saw bit rotation speed and saw bit speed of giving forward downwards, when the building stones to different hardness cut, can adjust the rotation speed and the downward forward operating speed of saw bit according to the change of building stones, and then make the saw bit when the cutting, can make the saw bit be difficult to collapse, guarantee the normal use of saw bit, be difficult to produce the potential safety hazard, and can keep the cutting speed of saw bit in reasonable within range, can not influence work efficiency.

Preferably, the controller output end is connected with the feeding device, the lifting device and the rotating control assembly input end.

Preferably, the rotation control assembly comprises a control box body, a variable speed motor and a saw blade rotating shaft, the variable speed motor is fixedly mounted on the control box body, the saw blade rotating shaft is mounted on the side wall of the control box body, and the output end of the variable speed motor controls the rotation of the saw blade rotating shaft.

Preferably, an input gear is mounted on an output shaft of the variable speed motor, an output gear is mounted on the saw blade rotating shaft, and the input gear drives the output gear to rotate.

Preferably, the rotation control assembly further comprises a transmission shaft, the transmission shaft is mounted on the control box body, a first transmission gear and a second transmission gear are mounted on the transmission shaft, the first transmission gear is meshed with the input gear, and the second transmission gear is meshed with the output gear.

Preferably, the rack comprises two upright columns arranged along the front-rear direction of the rail, and the lifting device is fixedly mounted on the upright columns.

Preferably, a lifting slide rail is installed on the upright column along the vertical direction, a slide plate is installed at the output end of the lifting device, the slide plate is located on the lifting slide rail and can slide along the length direction of the slide rail, and the rotation control assembly is installed on the slide plate.

Preferably, the slide is kept away from be equipped with horizontal slide rail on stand one side, the rotation control subassembly with horizontal slide rail correspondence position department fixed mounting has horizontal slider, horizontal slider cover is established inside the horizontal slide rail.

Preferably, the control box body is provided with a horizontal cylinder, the telescopic direction of the horizontal cylinder is parallel to the length direction of the horizontal sliding rail, and the rotary control assembly is fixedly installed at the output end of the horizontal cylinder.

Preferably, the output end of the controller is connected with the input ends of the feeding device, the lifting device, the horizontal cylinder and the rotary control assembly.

Preferably, the variable speed motor is controlled by a saw blade rotating shaft, the saw blade rotating shaft is provided with a resistance sensor for monitoring the resistance of the saw blade and a vibration sensor for monitoring the vibration of the rotating shaft, and the output end of the resistance sensor and the output end of the vibration sensor are connected with the input end of the controller.

Install on the saw bit rotation axis and be used for monitoring the resistance sensor and the vibration sensor of saw bit resistance and vibration, later with resistance data and the transmission of vibration data to the controller that obtain, the controller is again according to the resistance of feedback and the rotation speed of vibration data automatic adjustment saw bit, front and back feed speed and elevating speed, speed adjustment is real-time more, accurate, quick.

Preferably, the cutting machine is provided with a display screen for displaying cutting parameters and an input port for setting the cutting parameters and the cutting mode.

A control method of a disc cutting machine comprises the following control steps:

the method comprises the following steps that firstly, a cutting machine is started, a horizontal cylinder is controlled to adjust a circular saw blade to a specified transverse position, a downward feeding mode is entered, and cutting is started until the circular saw blade is cut to a specified depth;

step two, entering a forward feeding mode, and continuing cutting until the cutting distance is reached;

and step three, keeping the saw blade to continuously rotate, and lifting the saw blade of the cutting machine to finish one-time cutting operation.

Preferably, in the downward feeding mode, the downward feeding speed v1 satisfies the following relationship:

where f01 represents the standard frictional resistance for downward feed, v01 represents the set speed for downward feed, k11 represents the first threshold coefficient of friction, and k12 is the second threshold coefficient of friction.

Preferably, the first threshold coefficient of friction k11 satisfies: 0.05< k11 ≦ 0.20, and the second threshold coefficient of friction k12 satisfies: 0.30< k12 is less than or equal to 0.50.

Preferably, in the downward feeding mode, the blade rotational angular velocity v2 satisfies the following relationship:

where f01 represents the standard frictional resistance for feed down, v02 represents the set angular velocity of rotation of the feed down blade, k21 represents the third threshold coefficient of friction, and k22 is the fourth threshold coefficient of friction.

Preferably, the third friction threshold coefficient k21 satisfies: 0.05< k21 ≦ 0.20, and the fourth threshold coefficient of friction k22 satisfies: 0.30< k22 is less than or equal to 0.50.

Preferably, the downward-feeding standard frictional resistance f01 satisfies the following relationship:

where R represents the radius of the blade, L represents the saw blade down cutting depth, k01 is the blade side friction drag coefficient, k02 is the kerf friction drag coefficient, v01 represents the feed down set speed, and v02 represents the feed down blade rotational set angular speed.

Preferably, in the forward feed mode, the forward feed speed v3 satisfies the following relationship:

where f02 represents the forward feed standard frictional resistance, v01 represents the forward feed set speed, k31 represents the fifth threshold coefficient of friction, and k32 is the sixth threshold coefficient of friction.

Preferably, the fifth friction threshold coefficient k31 satisfies: 0.05< k31 ≦ 0.20, and the sixth threshold coefficient of friction k32 satisfies: 0.30< k32 is less than or equal to 0.50.

Preferably, in the forward feed mode, the blade rotational angular velocity v4 satisfies the following relationship:

where f02 represents the standard frictional resistance to forward feed, v02 represents the set angular speed of forward feed blade rotation, k41 represents the seventh threshold coefficient of friction, and k22 is the eighth threshold coefficient of friction.

Preferably, the seventh friction threshold coefficient k41 satisfies: 0.05< k41 ≦ 0.20, and the eighth threshold coefficient of friction k42 satisfies: 0.30< k42 is less than or equal to 0.50.

Preferably, the forward-feed standard frictional resistance f02 satisfies the following relationship:

where R represents the radius of the blade, L0 represents the blade cut depth setting, k01 represents the blade flank friction drag coefficient, k02 represents the kerf friction drag coefficient, v03 represents the forward feed set speed, and v04 represents the forward feed blade rotational set angular speed.

Preferably, in the first step and the second step, the vibration condition of the rotating shaft of the saw blade is monitored, and when the vibration amplitude is larger than a set value, the rotating angular speed of the saw blade is reduced until the vibration amplitude is smaller than or equal to a set range.

Preferably, the set value of the vibration amplitude is 8-15 micrometers.

Has the advantages that:

the technical scheme of the invention has the following beneficial effects:

(1) the traditional cutting machine cuts stones at a set operation speed in the process of cutting the quarried stones, the resistance is suddenly increased when the harder stones at a certain position are cut, the rotation speed of a saw blade and the feeding speed of the saw blade forwards cannot be adjusted timely, and then the saw blade is broken or even burnt, even violent vibration occurs, so that the saw blade is broken and scattered, hurts pedestrians and brings serious potential safety hazards; through controller control feeding device, elevating gear and rotation control subassembly, thereby control saw bit rotation speed and saw bit speed of giving forward downwards, when the building stones to different hardness cut, can adjust the rotation speed and the downward forward operating speed of saw bit according to the change of building stones, and then make the saw bit when the cutting, can make the saw bit be difficult to collapse, guarantee the normal use of saw bit, be difficult to produce the potential safety hazard, and can keep the cutting speed of saw bit in reasonable within range, can not influence work efficiency.

(2) A sliding plate is arranged on the disc cutting machine, a horizontal sliding rail is arranged on one side of the sliding plate, which is far away from the upright post, a horizontal sliding block is fixedly arranged at the position of the rotation control assembly, which corresponds to the horizontal sliding rail, and the horizontal sliding block is sleeved in the horizontal sliding rail; the control box body is provided with a horizontal cylinder, the telescopic direction of the horizontal cylinder is parallel to the length direction of the horizontal slide rail, and the rotary control assembly is fixedly arranged at the output end of the horizontal cylinder; the structure can conveniently adjust the transverse distance of the saw blade, and can meet more different production requirements.

(3) The resistance sensor and the vibration sensor which are used for monitoring the resistance and the vibration of the saw blade are arranged on the saw blade rotating shaft, the obtained resistance data and the obtained vibration data are transmitted to the controller, and the controller automatically adjusts the rotating speed, the downward feeding speed and the forward feeding speed of the saw blade according to the fed back resistance and vibration data, so that the adjustment is more real-time, accurate and rapid.

(4) Monitoring the vibration condition of a saw blade rotating shaft, and when the vibration amplitude is larger than a set value, reducing the rotation angular speed of the saw blade until the vibration amplitude is smaller than or equal to a set range; the vibration amplitude of the saw blade is monitored, vibration data are fed back to the controller to adjust the rotating speed, and therefore the early warning can be effectively achieved, the saw blade is prevented from generating strong vibration during working, accidents are caused, and the saw blade is damaged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a front view of a preferred cutting machine of the present invention;

FIG. 2 is a right side view of the cutting machine of the present invention;

FIG. 3 is a first top view of the cutting machine of the present invention;

FIG. 4 is a second top view of the cutting machine of the present invention;

FIG. 5 is a third top view of the cutting machine of the present invention;

FIG. 6 is a fourth top view of the cutting machine of the present invention;

FIG. 7 is a schematic view of a preferred mounting sleeve of the present invention;

FIG. 8 is a schematic view of a preferred stationary cylinder of the present invention;

FIG. 9 is a schematic view of a preferred rotating shaft limiting cylinder of the present invention;

FIG. 10 is a second schematic view of a preferred rotating shaft limiting cylinder of the present invention;

FIG. 11 is a first view of the preferred support rod assembly of the present invention;

FIG. 12 is a second schematic view of the preferred support rod assembly of the present invention;

FIG. 13 is a schematic view of a preferred cutting machine control system of the present invention;

FIG. 14 is a schematic view of a preferred rotating shaft sleeve assembly of the present invention.

In the figure: 1. a circular saw blade; 2. lifting the slide rail; 21. a slide plate; 3. a control box body;

31. a variable speed motor; 311. an input gear; 32. a drive shaft; 321. a first drive gear;

322. a second transmission gear; 33. a saw blade rotating shaft; 331. an output gear;

332. rotating the limiting block; 333. positioning blocks; 34. a rotating shaft limiting cylinder;

341. moving the limiting groove; 342. an annular limiting groove; 343. a connecting ring body;

344. a connecting ring connecting portion; 35. fixing the air cylinder; 351. a fixing pin; 36. fixing the mounting sleeve; 37. a rotating shaft limiting cylinder; 38. a rotating shaft positioning cylinder; 381. a rotating shaft positioning sleeve;

382. the rotating shaft positioning buffer assembly; 4. a feed motor; 41. a speed change mechanism; 42. a shaft lever; 43. a rail wheel; 44. a chain; 5. a column; 51. a base plate; 52. a top plate;

53. a column slide block; 54. a column slide rail; 55. the cylinder is fixed by the upright post;

551. the upright post fixes the sliding block; 56. the upright post fixes the chute; 6. a track; 7. a horizontal cylinder;

8. a controller; 9. a support rod main body; 91. a first stopper; 92. a second stopper;

93. an elastic fixed seat; 94. an elastic fixing rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1-2 and fig. 13, a circular saw cutting machine comprises a frame, a track 6, a circular saw blade 1, a rotation control assembly for controlling the circular saw blade 1 to rotate, a lifting device for controlling the circular saw blade 1 to lift, and a feeding device for controlling the circular saw blade 1 to feed back and forth along the track 6, wherein the frame is installed on the track 6 and can move along the length direction of the track 6, the lifting device is fixedly installed on the frame, and the rotation control assembly is installed at the output end of the lifting device and can move up and down on the frame; the center of the circular saw blade 1 is fixedly arranged at the output end of the rotary control component; the frame is also provided with a controller 8 for controlling the circular saw blade 1 to lift, feed forward and backward and rotate.

The traditional cutting machine cuts stones at a set operation speed in the process of cutting the quarried stones, the resistance is suddenly increased when the harder stones at a certain position are cut, the rotation speed of a saw blade and the feeding speed of the saw blade forwards cannot be adjusted timely, and then the saw blade is broken or even burnt, even violent vibration occurs, so that the saw blade is broken and scattered, hurts pedestrians and brings serious potential safety hazards; through 8 control feeding device of controller, elevating gear and rotation control subassembly, thereby control saw bit rotation speed and saw bit speed of giving forward downwards, when the building stones to different hardness cut, can adjust the rotation speed and the operation speed forward downwards of saw bit according to the change of building stones, and then make the saw bit when the cutting, can make the saw bit be difficult to collapse, guarantee the normal use of saw bit, be difficult to produce the potential safety hazard, and can keep the cutting speed of saw bit in reasonable within range, can not influence work efficiency.

In a preferred embodiment, the output of the controller 8 is connected to the input of the feeding device, the lifting device and the rotation control assembly.

As shown in fig. 3-6, as a preferred embodiment, the rotation control assembly includes a control box 3, a variable speed motor 31 and a blade rotating shaft 33, the variable speed motor 31 is fixedly mounted on the control box 3, the blade rotating shaft 33 is mounted on a side wall of the control box 3, and an output end of the variable speed motor 31 controls the rotation of the blade rotating shaft 33.

In a preferred embodiment, an input gear 311 is mounted on the output shaft of the speed-changing motor 31, an output gear 331 is mounted on the blade rotating shaft 33, and the input gear 311 drives the output gear 331 to rotate.

As a preferred embodiment, the rotation control assembly further includes a transmission shaft 32, the transmission shaft 32 is mounted on the control box 3, and a first transmission gear 321 and a second transmission gear 322 are mounted on the transmission shaft 32, the first transmission gear 321 is meshed with the input gear 311, and the second transmission gear 322 is meshed with the output gear 331.

As a preferred embodiment, the frame comprises two uprights 5 arranged in a front-rear direction along the rail 6, and the lifting device is fixedly mounted on the uprights 5.

As a preferred embodiment, the upright post 5 is provided with a lifting slide rail 2 along the vertical direction, the output end of the lifting device is provided with a slide plate 21, the slide plate 21 is positioned on the lifting slide rail 2 and can slide along the length direction of the slide rail, and the rotation control assembly is arranged on the slide plate 21.

As a preferred embodiment, a horizontal sliding rail is arranged on one side of the sliding plate 21 away from the upright post 5, a horizontal sliding block is fixedly installed at a position of the rotation control assembly corresponding to the horizontal sliding rail, and the horizontal sliding block is sleeved inside the horizontal sliding rail.

The lifting device may use one of a lead screw or an oil cylinder as a driving mechanism, which is prior art and will not be described in detail.

As a preferred embodiment, a horizontal cylinder 7 is installed on the control box body 3, the telescopic direction of the horizontal cylinder 7 is parallel to the length direction of the horizontal sliding rail, and the rotary control assembly is fixedly installed at the output end of the horizontal cylinder 7.

In a preferred embodiment, the output end of the controller 8 is connected with the input ends of the feeding device, the lifting device, the horizontal air cylinder 7 and the rotary control assembly.

In a preferred embodiment, the variable speed motor 31 controls the rotation of the saw blade through a blade rotating shaft 33, a resistance sensor for monitoring the resistance of the saw blade and a vibration sensor for monitoring the vibration of the rotating shaft are mounted on the blade rotating shaft 33, and the output ends of the resistance sensor and the vibration sensor are connected with the input end of the controller 8.

Install resistance sensor and the vibration sensor that is used for monitoring saw bit resistance and vibration on saw bit rotation axis 33, later with resistance data and the transmission of vibration data to controller 8 that obtain, controller 8 again according to the resistance of feedback and vibration data automatic adjustment saw bit's rotation rate, front and back feed speed and elevating speed, speed adjustment is real-time more, accurate, quick.

As a preferred embodiment, a display screen for displaying cutting parameters and an input port for setting the cutting parameters and the cutting mode are arranged on the cutting machine.

As a preferred embodiment, the upright 5 further comprises a bottom plate 51 and a top plate 52.

As shown in fig. 1-2, as a preferred embodiment, the feeding device is mounted on the bottom plate 51 of the upright 5, and the feeding device is mounted at both ends of the bottom plate 51 of the upright 5; the feeding device comprises a shaft rod 42, a feeding motor 4 and a track wheel 43; mounting parts for mounting the feeding device are formed at two ends of a bottom plate 51 of the upright post 5, shaft holes for mounting the shaft rod 42 are formed in the mounting parts, the shaft rod 42 is mounted on the shaft holes along the width direction of the rail 6, and the rail wheels 43 are mounted at two ends of the shaft rod 42; the feeding motor 4 drives the chain wheel on the shaft lever 42 by driving the chain wheel on the speed change mechanism 41, and finally drives the shaft lever 42 to rotate by adopting a chain 44 chain wheel mode.

A control method of a disc cutting machine comprises the following control steps:

the method comprises the following steps that firstly, a cutting machine is started, a horizontal cylinder 7 is controlled to adjust a circular saw blade 1 to a specified transverse position, a downward feeding mode is entered, and cutting is started until the cutting depth is specified;

step two, entering a forward feeding mode, and continuing cutting until the cutting distance is reached;

and step three, keeping the saw blade to continuously rotate, and lifting the saw blade of the cutting machine to finish one-time cutting operation.

As a preferred embodiment, in the downward feed mode, the downward feed speed v1 satisfies the following relationship:

where f01 represents the standard frictional resistance for downward feed, v01 represents the set speed for downward feed, k11 represents the first threshold coefficient of friction, and k12 is the second threshold coefficient of friction.

As a preferred embodiment, the first threshold coefficient of friction k11 satisfies: 0.05< k11 < 0.20, and a second threshold coefficient of friction k12 satisfies: 0.30< k12 is less than or equal to 0.50.

In the downward feed mode, the saw blade rotational angular velocity v2 satisfies the following relationship:

where f01 represents the standard frictional resistance for feed down, v02 represents the set angular velocity of rotation of the feed down blade, k21 represents the third threshold coefficient of friction, and k22 is the fourth threshold coefficient of friction.

As a preferred embodiment, the third friction threshold coefficient k21 satisfies: 0.05< k21 ≦ 0.20, and a fourth threshold coefficient of friction k22 satisfies: 0.30< k22 is less than or equal to 0.50.

As a preferred embodiment, the downward feed standard frictional resistance f01 satisfies the following relationship:

where R represents the radius of the blade, L represents the saw blade down cutting depth, k01 is the blade side friction drag coefficient, k02 is the kerf friction drag coefficient, v01 represents the feed down set speed, and v02 represents the feed down blade rotational set angular speed.

As a preferred embodiment, in the forward feed mode, the forward feed speed v3 satisfies the following relationship:

where f02 represents the forward feed standard frictional resistance, v01 represents the forward feed set speed, k31 represents the fifth threshold coefficient of friction, and k32 is the sixth threshold coefficient of friction.

As a preferred embodiment, the fifth friction threshold coefficient k31 satisfies: 0.05< k31 ≦ 0.20, and a sixth threshold coefficient of friction k32 satisfies: 0.30< k32 is less than or equal to 0.50.

As a preferred embodiment, in the forward feed mode, the blade rotational angular velocity v4 satisfies the following relationship:

where f02 represents the standard frictional resistance to forward feed, v02 represents the set angular speed of forward feed blade rotation, k41 represents the seventh threshold coefficient of friction, and k22 is the eighth threshold coefficient of friction.

As a preferred embodiment, the seventh friction threshold coefficient k41 satisfies: 0.05< k41 ≦ 0.20, and an eighth threshold coefficient of friction k42 satisfying: 0.30< k42 is less than or equal to 0.50.

As a preferred embodiment, the forward-feed standard frictional resistance f02 satisfies the following relationship:

where R represents the radius of the blade, L0 represents the blade cut depth setting, k01 represents the blade flank friction drag coefficient, k02 represents the kerf friction drag coefficient, v03 represents the forward feed set speed, and v04 represents the forward feed blade rotational set angular speed.

In a preferred embodiment, in the first step and the second step, the vibration of the blade rotating shaft 33 is monitored, and when the vibration amplitude is larger than a set value, the rotation angular speed of the blade is reduced until the vibration amplitude is smaller than or equal to a set range.

In a preferred embodiment, the set value of the vibration amplitude is 8 to 15 μm.

The following further describes the beneficial effects of the present embodiment by means of specific examples:

as shown in fig. 1 to 14, in particular, in this embodiment, the cutting machine is a double-blade disc cutting machine, which includes a rail, a left circular saw blade and a right circular saw blade disposed on both sides of the rail, a left feeding device for controlling the left circular saw blade to feed back and forth along the rail, a right feeding device for controlling the right circular saw blade to feed back and forth, a left lifting device for controlling the left circular saw blade to move up and down, a right lifting device for controlling the right circular saw blade to move up and down, a left rotation control assembly for controlling the left circular saw blade to rotate, and a right rotation control assembly for controlling the right circular saw blade to rotate, wherein an output end of the controller is connected to input ends of the left feeding device, the right feeding device, the left lifting device, the right lifting device, the left rotation control assembly, and the right rotation control assembly.

The left rotation control assembly comprises a left control box body, a left speed change motor and a left saw blade rotating shaft, the left speed change motor is fixedly arranged on the left control box body, the left saw blade rotating shaft is arranged on the side wall of the left control box body, the output end of the left speed change motor controls the left saw blade rotating shaft to rotate, and the center of a left circular saw blade is fixedly arranged on the left saw blade rotating shaft; the right rotation control assembly comprises a right control box body, a right variable speed motor and a right saw blade rotating shaft, the right variable speed motor is fixedly installed on the right control box body, the right saw blade rotating shaft is installed on the side wall of the right control box body, the right variable speed motor output end controls the right saw blade rotating shaft to rotate, and the center of a right circular saw blade is fixedly installed on the right saw blade rotating shaft.

A left input gear is mounted on an output shaft of the left variable speed motor, a left output gear is mounted on a left saw blade rotating shaft, and the left input gear drives the left output gear to rotate; the right input gear is installed on the right variable speed motor output shaft, the right output gear is installed on the right saw blade rotating shaft, and the right input gear drives the right output gear to rotate.

The left rotation control assembly further comprises a left transmission shaft, the left transmission shaft is installed on the left control box body, a first left transmission gear and a second left transmission gear are installed on the left transmission shaft, the first left transmission gear is meshed with the left input gear, and the second left transmission gear is meshed with the left output gear; the right rotation control assembly further comprises a right transmission shaft, the right transmission shaft is installed on the right control box body, a first right transmission gear and a second right transmission gear are installed on the right transmission shaft, the first right transmission gear is meshed with the right input gear, and the second right transmission gear is meshed with the right output gear.

The left variable speed motor controls the left circular saw blade to rotate through the left saw blade rotating shaft, the right variable speed motor controls the right circular saw blade to rotate through the right saw blade rotating shaft, the resistance sensor used for monitoring the resistance of the left circular saw blade and the right circular saw blade and the vibration sensor used for monitoring the vibration of the rotating shaft are installed on the left saw blade rotating shaft and the right saw blade rotating shaft, and the output end of the resistance sensor and the output end of the vibration sensor are connected with the input end of the controller.

Specifically, in this embodiment, the track includes left track and right track that four parallel bar guide rails are constituteed, still includes the left frame of installing on left track and the right frame of installing on right track, and left frame includes left stand, and right frame includes right stand, and left rotation control subassembly passes through left stand and installs on left track, and right rotation control subassembly passes through right stand and installs on right track. The left lifting device comprises a left lifting slide rail, the left lifting slide rail is arranged on the left upright post along the vertical direction, the output end of the left lifting device is provided with a left sliding plate, the left sliding plate is positioned on the left lifting slide rail and can slide along the length direction of the left lifting slide rail, and the left rotation control assembly is arranged on the left sliding plate; the right lifting device comprises a right lifting slide rail, the right lifting slide rail is installed on the right stand column along the vertical direction, the right sliding plate is installed at the output end of the right lifting device, the right sliding plate is located on the right lifting slide rail and can slide along the length direction of the right lifting slide rail, and the right rotation control assembly is installed on the right sliding plate.

Specifically, the present embodiment includes a left column and a right column, and each left column includes a left front column, a left rear column, a right front column, and a right rear column arranged along the front-rear direction of the rail.

A left horizontal sliding rail is arranged on one side, away from the left upright post, of the left sliding plate, a left horizontal sliding block is fixedly installed at the position, corresponding to the left horizontal sliding rail, of the left rotation control assembly, and the left horizontal sliding block is sleeved inside the left horizontal sliding rail; the right sliding plate is provided with a right horizontal sliding rail on one side far away from the right upright post, a right horizontal sliding block is fixedly arranged at the corresponding position of the right rotary control assembly and the right horizontal sliding rail, and the right horizontal sliding block is sleeved inside the right horizontal sliding rail.

Still install on the slide and be used for the fixed subassembly of control body with left and right rotation control assembly is fixed, the fixed subassembly of control body includes fixed cylinder 35, fixed pin 351 and fixed mounting cover 36, on the slide of more than one fixed cylinder 35 fixed mounting on one of them stand, all install a fixed pin 351 on every fixed cylinder 35, correspond the position department with every fixed pin 351 on the slide on another stand and all be provided with a fixed mounting cover 36. The input end of the fixed air cylinder 35 is connected with the output end of the controller 8. The two rotating control assemblies can be synchronously lifted by arranging the control main body fixing assembly, synchronous lifting can be realized by only starting one lifting device in the operation process, the stability of the rotating control assemblies in the movement process can be ensured when the two lifting devices are started, and the conditions of shaking and the like are not easy to occur.

The left sliding plate is provided with a left horizontal cylinder, the telescopic direction of the left horizontal cylinder is parallel to the length direction of the left horizontal sliding rail, and the left rotation control assembly is fixedly arranged at the output end of the left horizontal cylinder; the right sliding plate is provided with a right horizontal cylinder, the telescopic direction of the right horizontal cylinder is parallel to the length direction of the right horizontal sliding rail, and the right rotary control assembly is fixedly arranged at the output end of the right horizontal cylinder. The output end of the controller is connected with the input ends of the left horizontal cylinder and the right horizontal cylinder.

In this embodiment, the bottom of the control box body is also provided with a rotating shaft limiting assembly for limiting two saw blade rotating shafts.

The rotating shaft limiting assembly comprises a rotating shaft limiting cylinder 34 and a rotating shaft limiting cylinder 37, the rotating shaft limiting cylinder 37 is fixedly arranged at the bottom of the control box body, and the rotating shaft limiting cylinder 34 is arranged at the movable end of the rotating shaft limiting cylinder 37 and is sleeved on the outer circumference of one saw blade rotating shaft; the rotation shaft limiting cylinder 34 can move along the axial direction of the rotation shaft of the saw blade by the driving of the movable end of the rotation shaft limiting cylinder 37. The input end of the rotating shaft limiting cylinder 37 is connected with the output end of the controller 8.

The connecting ring assembly is installed at one end of the rotation shaft limiting cylinder 34 and comprises a connecting ring body 343 and a connecting ring connecting part 344 installed below the connecting ring body 343, the connecting ring connecting part 344 is fixedly installed at the movable end of the rotation shaft limiting cylinder 37, the connecting ring body 343 is installed at the end part of the rotation shaft limiting cylinder 34, and the connecting ring body 343 is coaxial with the rotation shaft limiting cylinder 34 and can rotate along the central axis thereof between the rotation shaft limiting cylinder 34 and the rotation shaft of the saw blade.

An annular groove is formed on the outer circumference of the rotating shaft limiting cylinder 34 at a position corresponding to the connecting ring body 343, and the connecting ring body 343 is sleeved on the annular groove.

One end of each saw blade rotating shaft, which is far away from the corresponding circular saw blade, is provided with a rotating limiting block 332 for limiting the rotating direction of the saw blade rotating shaft, and a movable limiting groove 341 for enabling the rotating limiting block 332 to move left and right and an annular limiting groove 342 for enabling the rotating limiting block 332 to rotate are formed inside the rotating shaft limiting cylinder 34.

The movable limiting groove 341 is a long groove parallel to the axis of the saw blade rotation shaft, and the plane of the annular limiting groove 342 is perpendicular to the movable limiting groove 341. When the rotation-axis limiting cylinder 34 is at the initial position, the rotation limiting block 332 is located in the annular limiting groove 342.

The number of the annular limiting grooves 342 is two, a set of rotating limiting blocks 332 are arranged on the two saw blade rotating shafts, and the distance between the two annular limiting grooves 342 is equal to the distance between the rotating limiting blocks 332 on the two saw blade rotating shafts.

The number of the annular limiting grooves 342 is three, a set of rotary limiting blocks 332 are arranged on the two saw blade rotating shafts, and except the annular limiting grooves 342 occupied by the rotary limiting blocks 332 when the rotating shaft limiting cylinder 34 is at the initial position, the distance between the other two annular limiting grooves 342 is equal to the distance between the rotary limiting blocks 332 on the two saw blade rotating shafts.

More than two groups of rotation limiting blocks 332 are arranged on the two saw blade rotating shafts, and when the two saw blade rotating shafts are positioned at the first limiting connecting position, the rotation limiting blocks 332 are positioned in the annular limiting grooves 342; when the two blade rotation shafts are in the second limit connection position, the rotation limit blocks 332 are both in the movement limit grooves 341.

In this embodiment, a rotating shaft positioning sleeve assembly for positioning the rotating shaft of the saw blade is installed at the bottom of at least one control box body.

The rotating shaft positioning sleeve assembly comprises a rotating shaft positioning cylinder 38 and a rotating shaft positioning sleeve 381, the rotating shaft positioning cylinder 38 is installed on the sliding plate 21, the rotating shaft positioning sleeve 381 is fixedly installed at the movable end of the rotating shaft positioning cylinder 38, a positioning groove for positioning the circular saw blade 1 is formed in the side, close to the saw blade rotating shaft 33, of the rotating shaft positioning sleeve 381, and a positioning block 333 matched with the positioning groove is arranged at the position, corresponding to the positioning groove, of the surface length direction of the saw blade rotating shaft 33.

The input end of the rotating shaft positioning cylinder is connected with the output end of the controller. After the saw blade rotates synchronously or asynchronously, when the operation mode needs to be changed, the rotating motion of the saw blade is closed, the speed of the saw blade is gradually reduced, at the moment, the cylinder is started, the rotating shaft positioning sleeve arranged on the movable end of the cylinder approaches to the rotating shaft along with the motion of the movable end of the cylinder, the setting distance between the rotating shaft positioning sleeve and the rotating shaft positioning sleeve is smaller than the height of the positioning block on the rotating shaft of the saw blade, when the positioning block rotates to one side of the rotating shaft positioning sleeve, the rotating shaft positioning sleeve and the positioning block will rub, the rotating speed of the saw blade is gradually reduced, when the rotating speed of the saw blade is enough to rotate for one circle, but when the energy required by the rotation is less than the energy required by the friction force between the rotating shaft positioning sleeve and the positioning block, the saw blade stops, and the positioning device is accommodated in the rotating shaft positioning groove of the rotating shaft positioning sleeve to realize the positioning of the position of the rotating shaft and further realize the positioning of the rotating shaft limiting block.

Specifically, the positioning groove is an arc-shaped groove, the distance between the notch at one end of the arc-shaped groove and the rotating shaft is greater than the height of the positioning block 333, and the distance between the notch at the other end of the arc-shaped groove and the rotating shaft is less than the height of the positioning block 333; the rotation direction of the positioning block 333 is from one end of the positioning groove with larger distance from the saw blade rotating shaft to the other end; the lower end of the positioning block 333 is in contact with the positioning groove, and the end is an arc-shaped surface, and the tangent point of the arc-shaped surface and the positioning groove is located inside the positioning groove.

The rotating shaft positioning sleeve 381 is slidably mounted on the movable end of the rotating shaft positioning cylinder 38 along the length direction of the movable end.

Specifically, the rotating shaft positioning cylinder 38 is further provided with a rotating shaft positioning buffer assembly 382 for buffering the rotating shaft positioning sleeve 381. Rotation axis location buffer unit 382 includes buffer spring, buffering seat, buffering pole, and it has the annular mounting groove of installation buffering pole to open on the rotation axis position sleeve 381, and the buffering pole is installed on the buffering seat, and the buffer spring cover is established on the buffering pole, and the buffering pole is installed inside the annular mounting groove, and buffer spring one end is connected with the buffering seat, and one end is installed at the annular mounting groove periphery. The input end of the rotating shaft positioning air cylinder 38 is connected with the output end of the controller.

Two left stand both ends are fixed through left stand bottom plate and left stand roof, and two right stand both ends are fixed through right stand bottom plate and right stand roof, all install between left stand bottom plate and the right stand bottom plate, between left stand roof and the right stand roof and be used for carrying out the fixed subassembly of stand fixed to left stand and right stand. The stand column fixing assembly is arranged, so that the integral stability of the cutting machine can be guaranteed in the synchronous forward feeding process.

The stand fixing assembly comprises a stand fixing cylinder 55, stand fixing sliding blocks 551 and stand fixing sliding grooves 56, the stand fixing cylinder 55 is fixedly installed on a left stand bottom plate or a left stand top plate, a stand fixing sliding block 551 is installed on each stand fixing cylinder 55, each stand fixing sliding block 551 is correspondingly provided with a stand fixing sliding groove 56 to match with the stand fixing sliding groove, and the stand fixing sliding grooves 56 are installed on a right stand bottom plate or a right stand top plate. The input end of the upright post fixing air cylinder 55 is connected with the output end of the controller 8.

An infrared emitter (not shown) for calibrating the column fixing slide 551 is installed in the column fixing slide 56, and an infrared receiving plate (not shown) corresponding to the infrared emitter is installed on one side of the column fixing slide 551 close to the column fixing slide 56.

The left upright post top plate and the right upright post top plate, and the left upright post bottom plate and the right upright post bottom plate are connected through upright post slide rails 54 and upright post slide blocks 53.

The left upright post top plate and the left upright post bottom plate are provided with upright post slide rails 54, and the right upright post top plate and the right upright post bottom plate are provided with upright post slide blocks 53 which are sleeved in the corresponding upright post slide rails 54.

The left feeding device is arranged on the left upright post bottom plate, and the left feeding device is arranged at two ends of the left upright post bottom plate; the left feeding device comprises a left shaft lever, a left feeding motor and a left track wheel; the left mounting part is provided with a left shaft hole for mounting a left shaft lever, the left shaft lever is mounted on the left shaft hole along the width direction of the track, and the left track wheels are mounted at the two ends of the left shaft lever; the left feeding motor drives the left chain wheel through the left speed changing mechanism and further drives the left chain wheel on the left shaft rod, and finally the left speed changing mechanism drives the left shaft rod to rotate in a chain and chain wheel mode; the right feeding device is arranged on the right upright post bottom plate, and the right feeding device is arranged at two ends of the right upright post bottom plate; the right feeding device comprises a right shaft lever, a right feeding motor and a right track wheel; a right mounting part for mounting a feeding device is formed at two ends of the bottom plate of the right upright post, a right shaft hole for mounting a right shaft rod is formed in the right mounting part, the right shaft rod is mounted on the right shaft hole along the width direction of the rail, and right rail wheels are mounted at two ends of the right shaft rod; still include right speed change mechanism, all be provided with the right sprocket on right speed change mechanism and the right axostylus axostyle, right feeding motor drives the right sprocket on the axostylus axostyle through driving the right sprocket on the right speed change mechanism, finally adopts the chain sprocket mode to drive the right axostylus axostyle rotatory.

Specifically, in this embodiment, a circular disk fixing assembly for fixing the non-center position of the circular saw blade is further installed on the saw blade rotating shaft.

The disc fixing assembly comprises a disc frame body and more than 3 supporting rod assemblies which are uniformly distributed on the surface of the disc frame body along the circumferential direction, the center of the disc frame body is fixedly installed on the saw blade rotating shaft, and the axis of each supporting rod assembly is parallel to the saw blade rotating shaft.

The distance from the central axis of each support rod assembly to the central axis of the blade rotational axis is equal.

The radius R0 of the circular saw blade is more than or equal to 2.5m, and the distance R1 between the central axis of the support rod assembly and the central axis of the rotating shaft of the saw blade is R0/(10-14).

The bracing piece subassembly includes bracing piece main part 9 and is used for fixing the circular saw blade at the fixed subassembly of bracing piece main part 9 tip, and bracing piece main part 9 is formed with the external screw thread with the fixed one end of circular saw blade, and the position department corresponds with bracing piece main part 9 on the circular saw blade is formed with the bracing piece mounting hole that supplies bracing piece main part 9 to pass through.

The supporting rod fixing assembly comprises a first stop block 91 and a second stop block 92 which are used for fixing two sides of the circular saw blade, the first stop block 91 and the second stop block 92 are tightly attached to the side face of the circular saw blade, and the centers of the first stop block 91 and the second stop block 92 are screwed on the supporting rod main body 9.

The first stopper 91 is provided with an elastic fixing member for applying pressure to the circular saw blade at a side thereof remote from the circular saw blade.

When the saw blade vibrates violently, the first stop block has transverse acting force, at the moment, the first stop block is damaged finally due to the fact that the first stop block tends to move transversely due to the violent vibration, and the saw blade cannot be locked; if the saw bit takes place violent vibration, lead to first dog to destroy, when unable fixing the saw bit, the fixed subassembly of elasticity that sets up can also play the effect of interim fixed saw bit under the effect of spring, makes the saw bit can not break away from the rotation axis because of the vibration to the effort that produces when vibrating carries out certain absorption, reduces the harm to saw bit and rotation axis, better protection operation safety, reduction loss of property.

The elastic fixing component comprises an elastic fixing seat 93, elastic fixing rods 94 uniformly distributed in the elastic fixing seat 93 along the circumferential direction and pressure springs sleeved on the elastic fixing rods 94; the elastic fixing seat 93 is fixedly sleeved at the end of the supporting rod main body 9 and abuts against the first stop block 91 at a side close to the first stop block 91. There is certain clearance or the loose fender of elasticity fixing base in first dog one side between elasticity fixing base and the first dog to further support firmly on first dog through pressure spring wherein.

A fixing rod sliding groove is formed in the first stopper 91 at a position corresponding to the elastic fixing rod 94, and the elastic fixing rod 94 is sleeved in the fixing rod sliding groove and can axially slide along the elastic fixing rod 94. Specifically, the fixed rod chute is a chute with an annular radial section.

One end of the pressure spring is fixedly mounted on the elastic fixing seat 93, and the other end of the pressure spring is fixedly mounted on the first stop block 91 at the peripheral position of the fixed rod chute.

The pressure spring is a tower spring, and the larger radius end of the pressure spring is fixedly arranged on the first stop block 91 at the peripheral position of the chute of the fixed rod.

The disc fixing component is mainly used for enhancing the anti-vibration capability of the circular saw blade, enhancing the stability of disc cutting and preventing the circular saw blade from being damaged or accidents and the like due to abnormal vibration.

As a preferred embodiment, a display screen for displaying cutting parameters and an input port for setting the cutting parameters and the cutting mode are arranged on the cutting machine.

The control method of the double-cutter disc cutting machine in the embodiment comprises the following control steps:

starting a double-cutter disc cutting machine, and controlling a horizontal cylinder to adjust a circular saw blade to a specified transverse position;

setting a cutting mode of the double-cutter four-track disc cutting machine, and starting to cut;

after cutting, keeping the circular saw blade to continue rotating, and lifting the circular saw blade of the cutting machine to finish one-time cutting operation;

the cutting mode of the double-cutter four-track disc cutting machine in the second step comprises a first cutting mode, a second cutting mode, a third cutting mode and a fourth cutting mode, wherein the first cutting mode comprises synchronous lifting, synchronous rotation and synchronous forward feeding of a left saw blade and a right saw blade; the second cutting mode is that the left and right circular saw blades synchronously ascend and descend, asynchronously rotate and synchronously feed forwards; the third cutting mode is that the left and right circular saw blades synchronously ascend and descend, synchronously rotate and synchronously feed forwards; the fourth cutting mode is that the left and right circular saw blades synchronously ascend and descend, synchronously rotate and synchronously feed forwards.

When the cutting machine is in the first cutting mode, the control upright post fixing air cylinder 55 fixes the two upright posts, the control main body fixing component fixes the two rotation control components, and the rotation limiting block 332 is matched with the movement limiting groove 341 to fix the two saw blade rotating shafts along the rotation direction.

When the saw blade cutting machine is in a first cutting mode, the control upright post fixing air cylinder 55 fixes two upright posts, the control main body fixing component fixes two rotation control components, then the rotation shaft limiting cylinder 34 can move along the axis direction of the other saw blade rotation shaft under the driving of the movable end of the rotation shaft limiting air cylinder 37, the left and right saw blade rotation shafts are sleeved in the same rotation shaft limiting cylinder 34, the rotation limiting blocks 332 on the left and right saw blade rotation shafts are matched with the movement limiting grooves 341, then one of the variable speed motors is started, and the two circular saw blades can rotate synchronously.

When the cutting machine is in the second cutting mode, the control upright post fixing air cylinder 55 fixes the two upright posts, the control main body fixing component fixes the two rotation control components, and the rotation limiting block 332 is matched with the annular limiting groove 342 to fix the two saw blade rotating shafts along the axis direction.

When being in the second kind of cutting mode, the fixed cylinder 55 of control stand is fixed with two stands, the fixed subassembly of control main part is fixed with two rotation control subassemblies, later the spacing section of thick bamboo 34 of rotation axis can be along the axis direction motion of another saw bit rotation axis under the drive of the spacing cylinder 37 expansion end of rotation axis, with left and right two saw bit rotation axis cover establish in the spacing section of thick bamboo 34 of same rotation axis, and left and right two saw bit rotation epaxial rotation stopper 332 and the cooperation of annular spacing groove 342, later start left and right variable speed motor, asynchronous rotary motion can be done to two saw blades.

When the cutting machine is in the third cutting mode, the control upright post fixing air cylinder 55 fixes the two upright posts, the control main body fixing component separates the two rotary control components, and the rotary shaft limiting cylinder 34 is at the initial position.

In the fourth cutting mode, the control column fixing air cylinder 55 separates the two columns, the control main body fixing component separates the two rotation control components, and the rotation shaft limiting cylinder 34 is at the initial position.

The circular saw blade is at the rotation in-process, its rotation rate may have small disparity, make it take place asynchronous rotation, therefore the rotatory spacing section of thick bamboo that sets up, make it be in respectively under different modes and remove spacing groove 341 or annular spacing groove 342, when the saw bit rotation axis at left and right both ends need synchronous rotation, the rotation axis stopper on the two all is in removing inside the spacing groove 341, finally make it have same initial condition, and also difficult emergence asynchronous rotation in the operation in process after, when left and right saw bit rotation axis asynchronous rotation, it can hold in the annular groove spacing groove, take place asynchronous rotation.

The double-knife disc cutting machine in the embodiment can have different operation modes, can better adapt to different production requirements, and is more diversified in use.

The control method of the single circular saw blade in the double-cutter circular saw cutting machine in the embodiment comprises the following control steps:

the method comprises the following steps that firstly, a cutting machine is started, a horizontal cylinder is controlled to adjust a circular saw blade to a specified transverse position, a downward feeding mode is entered, and cutting is started until the circular saw blade is cut to a specified depth;

step two, entering a forward feeding mode, and continuing cutting until the cutting distance is reached;

and step three, keeping the saw blade to continuously rotate, and lifting the saw blade of the cutting machine to finish one-time cutting operation.

As a preferred embodiment, in the downward feed mode, the downward feed speed v1 satisfies the following relationship:

where f01 represents the standard frictional resistance for downward feed, v01 represents the set speed for downward feed, k11 represents the first threshold coefficient of friction, and k12 is the second threshold coefficient of friction.

The first friction threshold coefficient k11 satisfies: 0.05< k11 < 0.20, and a second threshold coefficient of friction k12 satisfies: 0.30< k12 is less than or equal to 0.50.

In the downward feed mode, the blade rotational angular velocity v2 satisfies the following relationship:

where f01 represents the standard frictional resistance for feed down, v02 represents the set angular velocity of rotation of the feed down blade, k21 represents the third threshold coefficient of friction, and k22 is the fourth threshold coefficient of friction.

As a preferred embodiment, the third friction threshold coefficient k21 satisfies: 0.05< k21 ≦ 0.20, and a fourth threshold coefficient of friction k22 satisfies: 0.30< k22 is less than or equal to 0.50.

The downward feed standard frictional resistance f01 satisfies the following relationship:

where R represents the radius of the blade, L represents the saw blade down cutting depth, k01 is the blade side friction drag coefficient, k02 is the kerf friction drag coefficient, v01 represents the feed down set speed, and v02 represents the feed down blade rotational set angular speed.

In the forward feed mode, the forward feed speed v3 satisfies the following relationship:

where f02 represents the forward feed standard frictional resistance, v01 represents the forward feed set speed, k31 represents the fifth threshold coefficient of friction, and k32 is the sixth threshold coefficient of friction.

The fifth friction threshold coefficient k31 satisfies: 0.05< k31 ≦ 0.20, and a sixth threshold coefficient of friction k32 satisfies: 0.30< k32 is less than or equal to 0.50.

In the forward feed mode, the blade rotational angular velocity v4 satisfies the following relationship:

where f02 represents the standard frictional resistance to forward feed, v02 represents the set angular speed of forward feed blade rotation, k41 represents the seventh threshold coefficient of friction, and k22 is the eighth threshold coefficient of friction.

The seventh friction threshold coefficient k41 satisfies: 0.05< k41 ≦ 0.20, and an eighth threshold coefficient of friction k42 satisfying: 0.30< k42 is less than or equal to 0.50.

The forward-feed standard frictional resistance f02 satisfies the following relationship:

where R represents the radius of the blade, L0 represents the blade cut depth setting, k01 represents the blade flank friction drag coefficient, k02 represents the kerf friction drag coefficient, v03 represents the forward feed set speed, and v04 represents the forward feed blade rotational set angular speed.

In the single circular saw blade control method, in the first step and the second step, the vibration condition of the saw blade rotating shaft is monitored, and when the vibration amplitude is larger than a set interval, the rotating angular speed of the saw blade is reduced or the feeding speed is reduced until the vibration amplitude is smaller than or equal to a set range. The set interval of the vibration amplitude is any interval of 6-18 micrometers, and is preferably 8-15 micrometers. More preferably 10 to 12 microns. Specifically, in the present embodiment, two vibration amplitude setting intervals are provided, and each setting interval is any one interval of 6 to 18 micrometers.

When the vibration amplitude is larger than the upper limit of the first set interval, the specific response steps are as follows:

step one, reducing the feeding speed until the vibration amplitude is reduced to be lower than the lower limit of a first set interval;

if the vibration amplitude is not reduced below the lower limit of the first set interval after the feeding speed is reduced to half of the initial speed, simultaneously reducing the feeding speed and the rotation angular speed until the vibration amplitude is reduced below the lower limit of the first set interval;

after the vibration amplitude is reduced to be lower than the lower limit of the first set interval, keeping the feeding speed and the rotation angular speed unchanged, and when the vibration amplitude is reduced to be lower than the lower limit of the second set interval, improving the rotation angular speed to be the rotation speed without being influenced by the vibration amplitude; and then gradually increasing the feeding speed to a feeding speed which is not influenced by the amplitude.

In the third step, when the rotational angular velocity or the feed velocity is increased and the vibration amplitude is equal to or greater than the upper limit of the second set interval, the rotational angular velocity and the feed velocity are kept unchanged until the vibration amplitude is reduced to or less than the lower limit of the second set interval, and then the rotational angular velocity or the feed velocity is increased.

When the vibration amplitude is larger than the first set interval, the change rule of the feeding speed meets the following formula:

where v0 represents the feed speed without being affected by the amplitude, n is an integer greater than or equal to 1, preferably 3, formula (1) triggers when the amplitude of vibration is greater than the upper limit of the first set interval and terminates when the amplitude of vibration reaches the lower limit of the first set interval; equation (2) is triggered when the rotational speed has increased to a rotational angular speed that is not affected by an amplitude that is less than a second set interval lower limit and the feed speed is less than v0/2, and is terminated when v0' is v0/2 or when the amplitude reaches above the second set interval upper limit; equation (3) is triggered when the rotational angular velocity has increased to the rotational angular velocity without being affected by the amplitude, and the amplitude is smaller than the second set interval upper limit and v0' ≧ v0/2, and is terminated when the feed speed reaches v0 or the amplitude reaches or exceeds the second set interval upper limit; where v0 "is the initial feed speed at the time of trigger.

When the vibration amplitude is larger than the first set interval, the change rule of the rotation angular velocity satisfies the following formula:

wherein v2 represents the rotation speed without being affected by the amplitude, n is an integer greater than or equal to 1, preferably 3, formula (4) is triggered when the vibration amplitude has not decreased below the lower limit of the first set interval after the feed speed has decreased to half of its initial speed, and is terminated when the vibration amplitude reaches the lower limit of the first set interval; equation (5) is triggered when the vibration amplitude falls below the second set interval lower limit, and is terminated when the vibration amplitude reaches above the second set interval upper limit or when the rotational angular velocity reaches v 0.

The first set interval of vibration amplitude is 10-18 microns, preferably 10-12 microns; the second set interval of vibration amplitude is 6-10 microns, preferably 6-8 microns.

When the monitored vibration amplitude is not within the set range, the adjustment of the rotation angular speed and the downward forward feeding speed of the saw blade should be preferentially adjusted to be less than or equal to the set range by the adjustment of the vibration condition.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.