阅读说明：本技术 工具机刀库 (Tool magazine of tool machine ) 是由 孙颖 于 2021-05-31 设计创作，主要内容包括：本发明提供一种工具机刀库,其包含基座、刀盘、多个刀套、马达、剎车结构、凸轮、角度传感器及控制终端；刀盘架设于基座；各刀套通过轴承环设于刀盘的周缘；马达驱使凸轮作动,各轴承随凸轮的轮廓依序运作,连动地驱使刀盘能无间歇连续转动；角度传感器设于驱动轴的一端或刀盘的转动中心,角度传感器感应刀盘转动时的转动角度,控制终端判断转动角度符合换刀指令时,控制终端剎车结构令马达停止运转,以进行换刀作业；由此,刀盘的无间歇连续转动,能够使刀盘运转顺畅及节省运作时间,进而有效提升换刀作业的效率。(The invention provides a tool magazine of a tool machine, which comprises a base, a cutter head, a plurality of cutter sleeves, a motor, a brake structure, a cam, an angle sensor and a control terminal, wherein the cutter head is arranged on the base; the cutter head is erected on the base; each cutter sleeve is arranged on the periphery of the cutter head through a bearing ring; the motor drives the cam to actuate, each bearing operates sequentially along with the profile of the cam, and the cutter head is driven in a linkage manner to continuously rotate without intermission; the angle sensor is arranged at one end of the driving shaft or the rotating center of the cutter head, the angle sensor senses the rotating angle of the cutter head during rotation, and when the control terminal judges that the rotating angle accords with a cutter changing instruction, the control terminal braking structure enables the motor to stop operating so as to carry out cutter changing operation; therefore, the cutter head continuously rotates without intermission, so that the cutter head can smoothly operate and the operation time is saved, and the efficiency of cutter changing operation is effectively improved.)

1. A tool magazine, comprising:

a base;

the cutter head is erected on the base;

the cutter sleeves are arranged on the periphery of the cutter head in a surrounding manner, and machining cutters are inserted into the cutter sleeves;

the bearings are arranged on the cutter head in a surrounding mode, and each bearing corresponds to each cutter sleeve; and

the driving device is provided with a motor, a brake structure, a cam, a driving shaft, an angle sensor and a control terminal, wherein the brake structure is arranged in the motor, the motor drives the driving shaft to drive the cam to rotate around the driving shaft in the axial direction, each bearing is in contact with the profile of the cam, and each bearing operates sequentially along with the profile of the cam to drive the cutter head to continuously rotate without intermission; the angle sensor is arranged at one end of the driving shaft or the rotating center of the cutter head, the angle sensor senses the rotating angle of the cutter head during rotation, the control terminal receives the rotating angle and a cutter changing instruction, when the control terminal judges that the rotating angle accords with the cutter changing instruction, the control terminal controls the motor structure to enable the motor to stop operating, so that the cutter head stops rotating to carry out cutter changing operation.

2. The tool magazine according to claim 1, wherein the control terminal stores a position angle corresponding to each of the tool pockets provided in the cutter head, the tool change command is to prepare for changing the tool pocket in which the tool is located, and the control terminal reads the corresponding position angle according to the tool pocket and determines whether the read position angle matches the rotation angle.

3. The machine tool magazine according to claim 1, wherein the brake structure is sleeved on a rotating shaft of the motor, the brake structure is provided with an electromagnetic group, a brake pad, a magnetic conductive pressing plate and a plurality of pressure springs, when the electromagnetic group is electrified, the magnetic conductive pressing plate is attracted by the electromagnetic group, the magnetic conductive pressing plate is far away from the brake pad, the motor drives the cam to actuate, and the magnetic conductive pressing plate supports against the pressure springs to enable the pressure springs to be in a compression state; when the electromagnetic group is powered off, the pressure springs push the magnetic conductive pressure plate to rub with the brake lining, and the rotating shaft of the motor is pressed by the brake lining to stop rotating.

4. The machine tool magazine according to claim 3, wherein the brake structure has a base, a shaft sleeve, a plurality of studs, a plurality of pressure adjusting members and a plurality of gap adjusting members, the base is arranged along the axial direction of the rotating shaft of the motor, each stud is arranged through the base, the magnetic conductive pressing plate and the electromagnetic assembly, each pressure adjusting member and each gap adjusting member are arranged in each stud in a threaded manner and are arranged between each pressure spring and the electromagnetic assembly, the shaft sleeve is arranged between the brake pad and the rotating shaft of the motor, and the brake pad is slidably arranged at the outer edge of the shaft sleeve.

5. The tool magazine as claimed in claim 1, wherein said driving means has a first gear and a second gear, said first gear is sleeved on a rotation shaft of said motor, said second gear and said cam are sleeved on said driving shaft, and said first gear and said second gear are engaged with each other.

6. The tool machine tool magazine of claim 5, wherein said motor and said cam are disposed on said base.

7. The machine tool magazine of claim 1, wherein said angle sensor is an encoder.

8. The machine tool magazine according to claim 1, wherein the angle sensor is an inductive sensor, the angle sensor has a sensing block and a sensing module, the sensing block is spaced apart from the sensing module, the outer periphery of the sensing block is approximately in an arc shape, the sensing module can detect the distance from the outer periphery of the sensing block to generate a distance signal, and the control terminal processes and converts the distance signal to obtain the rotation angle of the cutter head.

9. The tool magazine as set forth in claim 1, wherein said cutter head has a central axis at a center thereof, said cutter head being mounted to said base through said central axis, each of said bearing rings being disposed between each of said cutter pockets and said central axis.

10. The machine tool magazine of claim 1, wherein said cam is a constant velocity cylindrical cam having a profile defined on a periphery of said cam, said profile being a curvilinear groove.

Technical Field

The invention relates to the field of tool magazine of a tool, in particular to a tool magazine of a tool, which can accurately control a cutter head to rotate smoothly.

Background

The cutter head driving structure for the tool magazine of the current common processing machine comprises a tool changing mechanism and the tool magazine, wherein the tool magazine is provided with a rotating disc and a rotating cutter head, the rotating disc is connected with the rotating cutter head, and a power source for driving the rotating cutter head to rotate is roughly divided into a common motor and a servo motor.

When the power source driving the rotary cutter disc to rotate is a common motor, the rotary disc is provided with a roller, the rotating shaft of the common motor is connected with a cam, the current of a power supply is input into a coil of the common motor, so that the common motor drives the cam to rotate, the roller of the rotary disc operates along the contour of the cam and drives the rotary cutter disc to operate, wherein when the common motor needs to be controlled to stop, the current of the power supply can immediately stop the current input coil, the rotating shaft of the common motor is difficult to immediately stop due to the inertia of the rotary motion, and the transient rotation of the rotating shaft can cause the transient shaking situation of the rotary cutter disc, so that the rotary cutter disc cannot stop at a proper position; therefore, in order to stop the rotating cutter disc at a proper position, the two ends of the outline of the cam are designed to be idle, so that the rollers are influenced by the outline of the cam after a general motor is stopped, the rotating cutter disc can be stopped at the idle part of the cam, and the rotating cutter disc can generate intermittent motion for changing between a static state and a rotating state due to the idle design of the cam.

However, intermittent motion can lead to the rotatory blade disc to change in the same direction as smoothly, and the slew velocity of rotatory blade disc also can not be too fast moreover, if the cutter interval distance that needs to be changed is when far away, just can improve the time of tool changing operation, leads to the tool changing efficiency to reduce.

In order to overcome the defect that a common motor drives a cam to rotate and a rotary cutter disc can generate intermittent motion, the rotary cutter disc can be controlled to rotate through a servo motor, wherein an encoder is arranged in the servo motor, the encoder can obtain the rotation angle of the rotary transmission cutter disc, and the servo motor judges the rotation or stop of the rotary cutter disc according to the rotation angle obtained by the encoder.

However, a power transmission path between the rotary cutter head and the servo motor is composed of a plurality of components, and after long-term use, the components are easy to wear, so that the rotation angle measured by the encoder has errors, the servo motor cannot accurately control the rotary cutter head, and the cutter changing operation is not accurate; moreover, the cost of the servo motor is high, and if the servo motor is damaged, high maintenance cost and time are required, thereby increasing the overall cost of the machine tool.

Disclosure of Invention

In order to solve the technical problems, the invention provides a tool magazine of a machine tool, which accurately measures the rotation angle of a cutter head through an angle sensor, and enables a braking structure to accurately stop the cutter head at a required angle so as to effectively improve the efficiency of cutter changing operation.

One embodiment of the present invention provides a tool magazine, comprising: a base; the cutter head is erected on the base; the cutter sleeves are arranged on the periphery of the cutter head through bearing rings respectively, and machining cutters are inserted into the cutter sleeves; the driving device is provided with a motor, a brake structure, a cam, an angle sensor and a control terminal, wherein the brake structure is arranged in the motor, the motor drives the cam to actuate, each bearing is contacted with the contour of the cam, each bearing operates sequentially along with the contour of the cam, and the cutter head is driven to continuously rotate without intermission in a linkage manner; the angle sensor is arranged at one end of the driving shaft or the rotating center of the cutter head, the angle sensor senses the rotating angle of the cutter head when rotating, and the control terminal receives the rotating angle and a cutter changing instruction.

In one embodiment, the control terminal stores position angles corresponding to the cutter sleeves arranged on the cutter head, the tool changing instruction is to prepare to change the cutter sleeve where the cutter is arranged, and the control terminal reads the corresponding position angle according to the cutter sleeve and performs matching judgment on the read position angle and the read rotation angle.

In one embodiment, the brake structure is sleeved on a rotating shaft of the motor, the brake structure is provided with an electromagnetic group, a brake pad, a magnetic conduction pressure plate and a plurality of pressure springs, when the electromagnetic group is electrified, the magnetic conduction pressure plate is attracted by the electromagnetic group, the magnetic conduction pressure plate is far away from the brake pad, the motor drives the cam to actuate, and the magnetic conduction pressure plate supports against each pressure spring to enable each pressure spring to be in a compression state; when the electromagnetic unit is powered off, each pressure spring pushes the magnetic conduction pressure plate to rub with the brake lining, and the rotating shaft of the motor is pressed by the brake lining to stop rotating.

In one embodiment, the brake structure includes a base, a shaft sleeve, a plurality of studs, a plurality of pressure adjusting members and a plurality of gap adjusting members, wherein the base is disposed along an axial direction of a rotating shaft of the motor, each stud penetrates through the base, the magnetic conductive pressing plate and the electromagnetic assembly, each pressure adjusting member and each gap adjusting member are screwed in each stud and disposed between each pressure spring and the electromagnetic assembly, the shaft sleeve is disposed between the brake pad and the rotating shaft of the motor, and the brake pad is slidably disposed at an outer edge of the shaft sleeve.

In one embodiment, the driving device has a driving shaft, a first gear and a second gear, the first gear is sleeved on the rotating shaft of the motor, the second gear and the cam are sleeved on the driving shaft, the first gear and the second gear are engaged with each other, and the motor drives the driving shaft to drive the cam to rotate around the axial direction of the driving shaft.

In one embodiment, the motor and the cam are disposed on the base.

In one embodiment, the angle sensor is an encoder.

In one embodiment, the angle sensor is an inductive sensor, the angle sensor has a sensing block and a sensing module, the sensing block and the sensing module are arranged at intervals, the outer periphery of the sensing block is approximately in an arc curve, the sensing module can sense the distance between the sensing block and the outer periphery of the sensing block to generate a distance signal, and the control terminal processes and converts the distance signal to obtain the rotation angle of the cutter head.

In one embodiment, the center of the cutter head is provided with a central shaft, the cutter head is erected on the base through the central shaft, and each bearing ring is arranged between each cutter sleeve and the central shaft.

In one embodiment, the cam is a constant-speed cylindrical cam, the contour of the cam is arranged on the periphery of the cam, and the contour of the cam is a curved groove.

By the aid of the angle sensor, the rotation angle of the cutter head can be accurately sensed, so that a control terminal control brake structure is provided, the cutter head stops rotating at a proper time by the brake structure control motor, quick and accurate cutter changing operation is facilitated, and unexpected rotation accidents of the cutter head can be avoided.

Furthermore, the angle sensor is arranged at one end of the driving shaft or the rotating center of the cutter head, so that the detection accuracy of the rotating angle can be prevented from being influenced by the abrasion of each component, and the measurement accuracy of the angle sensor is effectively improved.

In addition, the structure composition of the invention can achieve the control effect like a servo motor, and can effectively replace the servo motor, thereby reducing the manufacturing cost and the cost of subsequent maintenance.

In addition, the invention drives the cutter head to continuously rotate without intermission in a linkage way by the sequential operation of the bearings along with the contour of the cam; therefore, the cutter head can smoothly rotate and the operation time can be saved, so that the problems of unsmooth rotation and low rotation speed of the rotary cutter head caused by intermittent motion in the prior art can be solved, and the efficiency of cutter changing operation can be effectively improved.

Drawings

Fig. 1 is a schematic view of a first embodiment of the present invention.

Fig. 2 is an exploded view of the first embodiment of the present invention.

Fig. 3 is a schematic partial cross-sectional view of a first embodiment of the present invention.

FIG. 4 is an operation diagram of the first embodiment of the present invention.

Fig. 5 is an exploded schematic view of a brake structure according to a first embodiment of the invention.

Fig. 6 is a schematic view of a second embodiment of the present invention.

Fig. 7 is a partially enlarged schematic view of a second embodiment of the present invention.

Fig. 8 is a schematic partial cross-sectional view of a third embodiment of the present invention.

Detailed Description

In order to facilitate the description of the technical solutions of the present invention represented in the above summary, the present invention will now be further described with specific examples. Various objects in the embodiments are depicted in scale, size, amount of distortion or displacement suitable for illustration, rather than in scale of actual components, and are stated herein.

Referring to fig. 1 to 8, the present invention provides a tool magazine, comprising:

the base 10 is used for being erected on a machine tool (not shown), the base 10 is approximately disc-shaped, the base 10 is provided with a first side surface 11 and a second side surface 12, the second side surface 12 of the base 10 is convexly provided with a mounting portion 13 at the center of the base 10, the base 10 is provided with a containing portion 14 in a penetrating mode, and the containing portion 14 is located on one side of the mounting portion 13.

The cutter head 20 has a center shaft 21 at the center thereof, and the cutter head 20 is mounted on the mounting portion 13 of the base 10 through the center shaft 21.

In the embodiment of the present invention, the cutter pockets 30 are disposed at equal angular intervals on the periphery of the cutter head 20, and the cutter pockets 30 are used for inserting a machining tool (not shown).

And a plurality of bearings 40 which are annularly arranged on the cutter head 20, in the embodiment of the invention, the bearings 40 are arranged on the cutter head 20 at equal intervals, each bearing 40 corresponds to each cutter sleeve 30, and each bearing 40 is annularly arranged between each cutter sleeve 30 and the central shaft 21.

The drive device 50 comprises a motor 51, a brake structure 52, a cam 53, a drive shaft 54, a first gear 55, a second gear 56, an angle sensor 57 and a control terminal 58, wherein the brake structure 52 is arranged in the motor 51, the motor 51 and the cam 53 are arranged on the base 10, the motor 51 is arranged on the first side 11 of the base 10, the cam 53 is arranged on the accommodating part 14 of the base 10, the first gear 55 is sleeved on a rotating shaft of the motor 51, the second gear 56 and the cam 53 are sleeved on the drive shaft 54, the first gear 55 and the second gear 56 are meshed with each other, and the motor 51 is meshed with the second gear 56 through the first gear 55 so as to drive the drive shaft 54 to drive the cam 53 to rotate around the drive shaft 54 in the axial direction; in the present embodiment, the motor 51 is a reduction motor.

Brake structure 52 cover locates motor 51's pivot, brake structure 52 has base 521, electromagnetic group 522, brake pad 523, magnetic conduction clamp plate 524, a plurality of pressure spring 525, axle sleeve 526, a plurality of double-screw bolts 527, a plurality of pressure adjustment piece 528 and a plurality of clearance adjustment piece 529, base 521 sets up along the axial of motor 51's pivot, magnetic conduction clamp plate 524 and electromagnetic group 522 establish through each double-screw bolt 527 and base 521 spiral shell, each pressure adjustment piece 528 and each clearance adjustment piece 529 spiral shell locate each double-screw bolt 527, and each pressure adjustment piece 528 locates between each pressure spring 525 and electromagnetic group 522, each clearance adjustment piece 529 spiral shell locates the both sides face of electromagnetic group 522.

A shaft sleeve 526 is arranged between the brake pad 523 and the rotating shaft of the motor 51, the brake pad 523 is slidably arranged on the outer edge of the shaft sleeve 526, in the embodiment of the present invention, the outer edge of the shaft sleeve 526 is approximately rectangular, a circular hole is arranged in the center of the shaft sleeve 526, and the rotating shaft of the motor 51 is inserted into the circular hole.

Furthermore, the electromagnetic set 522 has an electromagnetic wire 522a and an electromagnetic coil 522b, and when the electromagnetic wire 522a of the electromagnetic set 522 is energized, the electromagnetic coil 522b generates a magnetic field, the magnetic conductive pressing plate 524 is attracted by the electromagnetic coil 522b of the electromagnetic set 522, so that the magnetic conductive pressing plate 524 is away from the brake pad 523, and the motor 51 can drive the cam 53 to actuate, wherein the magnetic conductive pressing plate 524 can press each pressure spring 525, so that each pressure spring 525 is in a compressed state.

When the electromagnetic wire 522a of the electromagnetic set 522 is powered off, the magnetic field of the electromagnetic coil 522b disappears, the magnetic conductive pressing plate 524 is no longer attracted by the magnetic force of the electromagnetic coil 522b, the relaxation force of the pressure springs 525 pushes the magnetic conductive pressing plate 524 to rub against the brake pad 523, and the rotating shaft of the motor 51 is pressed by the brake pad 523 to stop rotating.

The motor 51 drives the cam 53 to actuate, each bearing 40 contacts with the contour 531 of the cam 53, each bearing 40 operates in sequence along with the contour 531 of the cam 53, and the cutter disc 20 is driven to rotate continuously without intermission in a linkage manner; in the present embodiment, the cam 53 is a constant-velocity cylindrical cam, the contour 531 of the cam 53 is provided on the periphery of the cam 53, the contour 531 of the cam 53 is a curved groove, and each bearing 40 can be in the contour 531.

An angle sensor 57 for sensing a rotation angle of the cutter head 20 when rotating, the angle sensor 57 being provided on a power transmission path between the cutter head 20 and the cam 53, wherein the angle sensor 57 can be provided at one end of the drive shaft 54 or the cutter head 20; referring to fig. 2, 3, 6 and 7, in the first and second embodiments of the present invention, an angle sensor 57 is disposed at one end of the driving shaft 54, and the cam 53 is disposed between the second gear 56 and the angle sensor 57; referring to fig. 8, in a third embodiment of the present invention, an angle sensor 57 is provided on the cutter head 20.

The angle sensor 57 can be an encoder or an inductive sensor; referring to fig. 2 and 3, in the first and third embodiments of the present invention, the angle sensor 57 can be an encoder.

Referring to fig. 6 and 7, in a second embodiment of the present invention, the angle sensor 57 is an inductive sensor; the angle sensor 57 has a sensing block 571 and a sensing module 572, the sensing block 571 is sleeved at one end of the driving shaft 54, the sensing block 571 and the sensing module 572 are arranged at an interval, an outer periphery of the sensing block 571 is approximately an arc curve, an expansion locus of the arc curve of the outer periphery of the sensing block 571 is an involute, a sensing end of the sensing module 572 faces the outer periphery of the sensing block 571, distances between different positions on the outer periphery of the sensing block 571 and the sensing end of the sensing module 572 are different, the sensing module 572 can detect the distance between the sensing block 571 and the outer periphery to generate a distance signal, and the control terminal 58 receives the distance signal and processes and converts the distance signal to obtain a rotation angle of the cutter head 20.

In this embodiment, the sensing end of the sensing module 572 can project light to the outer periphery of the sensing block 571, the sensing module 572 can detect the distance from the outer periphery of the sensing block 571 by the light, and the sensing module 572 outputs the distance signal to the control terminal 58 as the voltage volt value; the voltage of the sensing module 572 varies from 1 volt to 30 volts, the control terminal 58 stores voltage values corresponding to different distances, and the outer periphery of the sensing module 571 is divided by 360 volts, for example: the induction block 571 rotates for one circle 360 degrees to form 1 cutter position; 1 volt represents a 0 degree rotation of the cutter head 20; the 26.25 volts represents 315 degrees of rotation of the cutter head 20, which is described above for illustration purposes and the invention is not limited thereto.

The control terminal 58 is coupled to the motor 51, the control terminal 58 can be a computer, and the invention is not limited to the type of the control terminal 58; the control terminal 58 stores the position angle of each cutter pocket 30 relative to the cutter head 20.

When the driving device 50 controls the cutter head 20 to rotate, the angle sensor 57 continuously senses the current rotation angle of the cutter head 20, and the angle sensor 57 continuously transmits the rotation angle to the control terminal 58; when the control terminal 58 receives a tool changing instruction, it indicates that a tool changing operation is to be performed, and a tool needs to be taken out from the tool case 30, and the tool changing instruction is the tool case 30 where the tool is to be changed, the control terminal 58 reads a corresponding position angle according to the tool case 30 where the tool is located, and matches and judges the read position angle and the currently received rotation angle, when the control terminal 58 judges that the rotation angle meets the tool changing instruction, the control terminal 58 controls the brake structure 52, and the brake structure 52 controls the motor 51 to stop operating, so that the cutter head 20 stops rotating, and the tool changing operation is performed.

If the position of the tool sleeve 30 where the tool to be replaced is located is far from the rotation angle of the current cutter head 20, the cutter head 20 can rotate continuously without intermission, so that the cutter head 20 can rotate to the required rotation angle quickly and effectively, and the brake structure 52 can stop the rotation of the cutter head 20 accurately, so as to facilitate quick tool changing operation.

In summary, the present invention can achieve the following technical effects:

1. according to the invention, the rotation angle of the cutter head 20 can be accurately sensed through the angle sensor 57, so that the accurate control braking structure 52 of the control terminal 58 is provided, and the motor 51 stops the rotation of the cutter head 20 at a proper time, thereby facilitating the quick and accurate cutter changing operation.

2. According to the invention, the angle sensor 57 is arranged at one end of the driving shaft 54, so that the detection accuracy of the rotation angle can be prevented from being influenced by the abrasion of each component, the measurement accuracy of the angle sensor 57 can be effectively improved, and the effect of easy installation can be achieved.

3. Each component on the power transmission path between the cutter head 20 and the cam 53 is worn for a long time, so that the rotation angle measured by the angle sensor 57 has an error, and therefore, the angle sensor 57 is installed at the center of the cutter head 20, the detection accuracy of the rotation angle can be prevented from being influenced by the wear of each component, and the measurement accuracy of the angle sensor 57 can be effectively improved.

4. The invention arranges the brake structure 52 in the motor 51, which can ensure the cutter head 20 to stop at an accurate position and avoid unexpected rotation.

5. The structure composition of the invention can achieve the control effect like a servo motor, thereby reducing the manufacturing cost and the cost of subsequent maintenance.

6. The invention drives the cutter head 20 to continuously rotate without intermission in a linkage way by the sequential operation of the bearings 40 along with the contour 531 of the cam 53; therefore, the cutter head 20 can operate smoothly, the operation time can be saved, and the efficiency of cutter changing operation can be effectively improved.

The above-mentioned examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. It is intended that all such modifications and variations be included within the scope of the invention, which is not to be limited thereto.

[ description of reference ]

10: a base; 11: a first side surface; 12: a second side surface; 13: an installation part; 14: a receptacle portion; 20: a cutter head; 21: a central shaft; 30: a knife sheath; 40: a bearing; 50: a drive device; 51: a motor; 52: a brake structure; 521: a base; 522: an electromagnetic group; 522 a: an electromagnetic wire; 522 b: an electromagnetic coil; 523: a lining; 524: a magnetic conduction pressure plate; 525: a pressure spring; 526: a shaft sleeve; 527: a stud; 528: a pressure adjustment member; 529: a gap adjuster; 53: a cam; 531: a contour; 54: a drive shaft; 55: a first gear; 56: a second gear; 57: an angle sensor; 571: an induction block; 572: a sensing module; 58: and controlling the terminal.