阅读说明：本技术 一种法兰钻孔设备和方法 (Flange drilling equipment and method ) 是由 张�林 于 2021-06-30 设计创作，主要内容包括：本发明专利属于法兰生产技术领域,具体涉及一种法兰钻孔设备和方法,法兰钻孔设备包括机架、电机、钻杆、放料台和升降装置,所述机架包括固定连接的底板和竖板,还包括齿轮传动装置、水平的安装板一和安装板二,所述安装板一、安装板二分别与竖板垂直可拆卸连接,所述安装板一处于安装板二的正上方；相比现有技术,本发明的法兰钻孔设备通过对安装板一和安装板二的拆卸和安装,可以实现齿轮传动装置的更换,使得齿轮传动装置与待加工的法兰相适应；刚性强,能够保证法兰螺栓孔的加工精度,长期运行稳定可靠；能够一次完成多个螺栓孔的加工。(The invention belongs to the technical field of flange production, and particularly relates to a flange drilling device and a method, wherein the flange drilling device comprises a rack, a motor, a drill rod, a discharging table and a lifting device, wherein the rack comprises a bottom plate and a vertical plate which are fixedly connected, a gear transmission device, a horizontal mounting plate I and a horizontal mounting plate II, the mounting plate I and the mounting plate II are vertically and detachably connected with the vertical plate respectively, and the mounting plate I is positioned right above the mounting plate II; compared with the prior art, the flange drilling equipment can realize the replacement of the gear transmission device by disassembling and assembling the mounting plate I and the mounting plate II, so that the gear transmission device is adaptive to the flange to be processed; the rigidity is strong, the processing precision of the flange bolt hole can be ensured, and the long-term operation is stable and reliable; the machining of a plurality of bolt holes can be completed at one time.)

1. A flange drilling device comprises a rack (1), a motor (4), a drill rod (6), a discharging platform (7) and a lifting device (8), wherein the rack (1) comprises a bottom plate (11) and a vertical plate (12) which are fixedly connected, the discharging platform (7) is positioned above the bottom plate (11), the upper surface of the discharging platform (7) is provided with a flange fixing device, the drill rod (6) is positioned above the discharging platform (7), and the flange drilling device is characterized in that,

the mounting device comprises a gear transmission device (5), a horizontal mounting plate I (2) and a horizontal mounting plate II (3), wherein the mounting plate I (2) and the mounting plate II (3) are vertically detachably connected with a vertical plate (12) respectively, and the mounting plate I (2) is positioned right above the mounting plate II (3);

the gear transmission device (5) comprises a driving gear (51), a plurality of driven gears (52), a vertical driving shaft (53) and a plurality of vertical driven shafts (54); the driven gears (52) are uniformly distributed at intervals around the circumferential direction of the driving gear (51) and are simultaneously meshed with the driving gear (51); the driving gear (51) is arranged on a driving shaft (53), and each driven gear (52) is arranged on a corresponding driven shaft (54);

bearings are respectively arranged at the positions, corresponding to the positions of the driving shaft (53) and the driven shafts (54), of the mounting plate I (2) and the mounting plate II (3), and two ends of the part, between the mounting plate I (2) and the mounting plate II (3), of the driving shaft (53) and the driven shafts (54) are respectively arranged in the corresponding bearings;

the motor (4) is arranged above the mounting plate I (2), and the output end of the motor (4) is in driving connection with the end, far away from the mounting plate II (3), of the driving shaft (53);

the lower end of the driven shaft (54) is provided with the drill rods (6) through a coupler, and the number of the drill rods (6) is equal to that of the flange bolt holes; the distance from the central line of the drill rod (6) to the central line of the driving shaft (53) is equal to the distance from the central line of the flange bolt hole to the central line of the flange.

2. The flange drilling equipment according to claim 1, wherein the discharging platform (7) is vertical and cylindrical, the central line of the discharging platform (7) is coincident with the central line of the driving shaft (53), the flange fixing device is an inflatable shaft (72) vertically arranged at the center of the upper surface of the discharging platform (7), and an air nozzle is arranged at the bottom end of the inflatable shaft (72);

an air inflation shaft vent hole (73) is formed in the curved surface of the discharging table (7), and an air pipe is laid in the air inflation shaft vent hole (73); the air pipe connects the air tap of the air expansion shaft (72) with an air pump for air suction and inflation outside the discharging platform (7).

3. The flange drilling equipment according to claim 2, characterized in that the upper surface of the blanking table (7) is provided with an annular groove (71), and the annular groove (71) is positioned right below the drill rod (6) and used for the drill rod (6) to extend into.

4. A flange drilling apparatus according to claim 3, characterised in that the number of driven gears (52) and drill rods (6) is four, eight, twelve or sixteen.

5. The flange drilling equipment according to claim 4, characterized in that the mounting plates I (2) and II (3) are respectively connected with the vertical plate (12) through bolts and nuts.

6. A flange drilling apparatus according to claim 5, characterized in that the lifting device (8) is a cylinder vertically mounted on a bottom plate (11), and the discharge table (7) is horizontally mounted at the end of a piston rod of the lifting device (8).

7. A flange drilling apparatus according to claim 6, wherein the driving gear (51) and the plurality of driven gears (52) are spur gears.

8. The flange drilling equipment according to claim 8, characterized in that a drainage groove (74) is fixedly arranged at the outer edge of the material placing table (7), and a drainage pipe is arranged at the bottom surface of the drainage groove (74).

9. A flange plate drilling method of a flange drilling device according to claim 8, comprising the steps of:

selecting a corresponding mounting plate I (2) and a corresponding mounting plate II (3) according to the specification of a flange to be processed, mounting the mounting plate I (2) and the mounting plate II (3) on a vertical plate (12), and mounting a corresponding gear transmission device (5) between the mounting plate I (2) and the mounting plate II (3); a drill rod (6) is selected to be installed below the driven shaft (54), and the diameter of a bolt hole machined by the drill rod (6) meets the standard requirement; a discharging platform (7) is selected to be installed at the end part of a piston rod of the lifting device (8), the flange can be fixed after an air inflation shaft (72) on the discharging platform (7) is inflated, and the annular groove (71) is positioned right below the drill rod (6);

placing the flange to be processed on the upper surface of the discharging table (7), and enabling the air inflation shaft (72) to penetrate through a central hole of the flange; the air inflation shaft (72) is inflated through an air nozzle, and the flange is fixed on the discharging platform (7) through the air inflation shaft (72);

step three, starting a motor (4), wherein the motor (4) drives a driving shaft (53) and a driving gear (51) to rotate, a plurality of driven gears (52) which are simultaneously meshed with the driving gear (51) are driven, and the driven gears (52) drive a driven shaft (54) and a drill rod (6) to rotate; simultaneously starting a lifting device (8), driving the discharging platform (7) and the flange to be processed to move upwards by the lifting device (8), and contacting the drill rod (6) and the flange in the moving process to process a bolt hole meeting the requirement;

fourthly, simultaneously processing bolt holes by a plurality of drill rods (6), and completing the processing of a plurality of bolt holes of the flange at one time;

and fifthly, after the flange bolt hole is machined, the lifting device (8) drives the discharging platform (7) to move downwards, the inflatable shaft (72) releases the fixation of the flange, the flange with the machined bolt hole is taken down, and the next flange is machined.

Technical Field

The invention belongs to the technical field of flange production, and particularly relates to a flange drilling device and method.

Background

The processing of flange bolt hole generally adopts single-spindle drilling machine or multi-spindle drilling machine among the prior art, because a flange will process a plurality of bolt holes, so need fix a position many times and bore a lot of at the in-process that utilizes single-spindle drilling machine processing flange bolt hole, production efficiency is low on the one hand, and the bolt hole centre-to-centre spacing that on the other hand processed out may be out of tolerance.

A multi-spindle drilling machine or a multi-hole drilling machine is machine tool equipment applied to drilling and tapping in the mechanical field and is divided into an adjustable type and a fixed type. The multi-spindle device of the adjustable multi-spindle drilling machine comprises a gear box, a universal joint and a transmission shaft, wherein the universal joint is a movable shaft part, so that the multi-spindle device can move left and right within a limited range. The adjusting device is not limited by gears when adjusting the processing pitch, is suitable for processing various uncertain hole pieces, and has wider application range; the defects are that the control is deficient in the aspect of precision, and the running rate is high after long-term use. The machine head of the fixed multi-axis drilling machine is fixed, and only one part can be processed by one fixed multi-axis drilling machine; in addition, the fixed multi-spindle drilling machine still uses a multi-spindle device, and due to the fact that a universal joint transmission device is used in the multi-spindle device, when a driving shaft rotates at the equal angular speed, the angular speed of a driven shaft changes periodically within a certain range, additional dynamic load is caused, transmission is not stable, and machining precision is not high enough.

Disclosure of Invention

The invention provides flange drilling equipment and a method, aiming at the problems that the efficiency of machining bolt holes by using a single-shaft drilling machine is low and the precision of machining bolt holes by using a multi-shaft drilling machine is deficient.

In order to achieve the purpose, the invention adopts the technical scheme that: a flange drilling device comprises a rack, a motor, a drill rod, a discharging table and a lifting device, wherein the rack comprises a bottom plate and a vertical plate which are fixedly connected, the discharging table is positioned above the bottom plate, a flange fixing device is arranged on the upper surface of the discharging table, the drill rod is positioned above the discharging table, the flange drilling device further comprises a gear transmission device, a horizontal mounting plate I and a mounting plate II, the mounting plate I and the mounting plate II are respectively vertically and detachably connected with the vertical plate, and the mounting plate I is positioned right above the mounting plate II;

the gear transmission device comprises a driving gear, a plurality of driven gears, a vertical driving shaft and a plurality of vertical driven shafts; the driven gears are uniformly distributed on the periphery of the driving gear and are meshed with the driving gear at the same time; the driving gear is arranged on the driving shaft, and each driven gear is arranged on the corresponding driven shaft respectively;

bearings are respectively arranged at the positions, corresponding to the positions of the driving shaft and the driven shafts, of the mounting plate I and the mounting plate II, and two ends of the part, between the mounting plate I and the mounting plate II, of the driving shaft and the driven shafts are respectively arranged in the corresponding bearings;

the motor is arranged above the first mounting plate, and the output end of the motor is in driving connection with the driving shaft far away from the two ends of the mounting plate;

the lower end of the driven shaft is provided with the drill rods through a coupler, the number of the drill rods is equal to that of the flange bolt holes, and the center lines of the drill rods and the flange bolt holes are overlapped; the distance from the central line of the drill rod to the central line of the driving shaft is equal to the distance from the central line of the flange bolt hole to the central line of the flange.

Preferably, the discharging table is in a vertical cylindrical shape, the center line of the discharging table is overlapped with the center line of the driving shaft, the flange fixing device is an inflatable shaft vertically installed in the center of the upper surface of the discharging table, and an air nozzle is installed at the bottom end of the inflatable shaft; an air inflation shaft vent hole is formed in the curved surface of the discharging table, and an air pipe is laid in the air inflation shaft vent hole; the air pipe connects the air tap of the air expansion shaft with an air pump for air suction and inflation outside the material discharge table.

Preferably, the upper surface of the discharging table is provided with an annular groove, and the annular groove is positioned right below the drill rod.

Preferably, the number of driven gears and drill rods is four, eight, twelve or sixteen.

Preferably, the first mounting plate and the second mounting plate are respectively connected with the vertical plate through bolts and nuts.

Preferably, the lifting device is a cylinder vertically installed on the bottom plate, and the discharging platform is horizontally installed at the end part of a piston rod of the lifting device.

Preferably, the driving gear and the plurality of driven gears are all spur gears.

Preferably, the outer edge of the discharging platform is also fixedly provided with a drainage groove, and the bottom surface of the drainage groove is provided with a drainage pipe.

A flange plate drilling method based on flange drilling equipment comprises the following steps:

selecting a first mounting plate and a second mounting plate according to the specification of a flange to be processed, mounting the first mounting plate and the second mounting plate on a vertical plate, and mounting a corresponding gear transmission device between the first mounting plate and the second mounting plate; a drill rod is selected to be installed below the driven shaft, and the diameter of a bolt hole machined by the drill rod meets the standard requirement; a discharging platform is selected to be installed at the end part of a piston rod of the lifting device, the flange can be fixed after the air inflation shaft on the discharging platform is inflated, and the annular groove is positioned right below the drill rod;

placing a flange to be processed on the upper surface of the discharging table, wherein the air inflation shaft penetrates through a central hole of the flange; the air inflation shaft is inflated through an air nozzle, and the flange is fixed on the discharging platform through the air inflation shaft;

step three, a motor is started, the motor drives a driving shaft and a driving gear to rotate, a plurality of driven gears meshed with the driving gear simultaneously are driven, and the driven gears drive a driven shaft and a drill rod to rotate; simultaneously starting a lifting device, driving the discharging platform and the flange to be processed to move upwards by the lifting device, and contacting the drill rod and the flange in the moving process to process a bolt hole meeting the requirement;

fourthly, simultaneously processing bolt holes by a plurality of drill rods, and processing a plurality of bolt holes of the flange at one time;

and step five, after the flange bolt hole is machined, the lifting device drives the discharging platform to move downwards, the inflatable shaft releases the fixation of the flange, the flange with the machined bolt hole is taken down, and the next flange is machined.

Compared with the prior art, the invention has the advantages and positive effects that:

compared with the prior art, the flange drilling equipment comprises (1) a first mounting plate and a second mounting plate which are vertically and detachably connected with a vertical plate of a rack respectively, wherein a gear transmission device is arranged between the first mounting plate and the second mounting plate, and the gear transmission device can be replaced by detaching and installing the first mounting plate and the second mounting plate, so that the gear transmission device is adaptive to a flange to be processed;

(2) the gear transmission device comprises a driving gear, a plurality of driven gears, a vertical driving shaft and a plurality of vertical driven shafts, wherein the driven gears are simultaneously meshed with the driving gear; the driving gear is arranged on the driving shaft, and each driven gear is arranged on the corresponding driven shaft respectively; bearings are respectively arranged at the positions, corresponding to the positions of the driving shaft and the driven shafts, of the mounting plate I and the mounting plate II, and two ends of the part, between the mounting plate I and the mounting plate II, of the driving shaft and the driven shafts are respectively arranged in the corresponding bearings; the structure has strong rigidity, can ensure the processing precision of the flange bolt hole, and has stable and reliable long-term operation; the machining of a plurality of bolt holes can be completed at one time;

(3) the discharging table is vertical and cylindrical, the central line of the discharging table is superposed with the central line of the driving shaft, and the center of the upper surface of the discharging table is vertically provided with an inflatable shaft; according to the technical scheme, the flange is very easy and accurate to position before the bolt hole is machined, and the flange is fixed and fixed quickly;

(4) the annular groove on the discharging platform enables the drill rod to smoothly complete bolt hole machining, and meanwhile, the discharging platform is not damaged.

Drawings

In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings used in the description of the embodiment will be briefly introduced below, fig. 1 is a perspective view of a flange drilling apparatus provided in embodiment 1,

figure 2 is a perspective view of a second flange drilling apparatus,

figure 3 is a perspective view of a flange drilling apparatus three,

FIG. 4 is a schematic view of a gear assembly in a flange drilling apparatus according to an embodiment,

FIG. 5 is a schematic view of a gear transmission device in the second flange drilling apparatus according to the embodiment,

FIG. 6 is a first schematic view of a material placing table in a flange drilling device according to an embodiment,

FIG. 7 is a schematic view of a material placing table in the flange drilling apparatus according to the first embodiment,

FIG. 8 is a schematic view of a third material placing table in the flange drilling apparatus according to the first embodiment,

FIG. 9 is a schematic view of a material placing table in the second flange drilling apparatus according to the embodiment.

Description of the drawings:

1-a frame, 11-a bottom plate, 12-a vertical plate;

2, mounting plate I, 3, mounting plate II, 4 and a motor;

5-gear transmission, 51-driving gear, 52-driven gear, 53-driving shaft, 54-driven shaft;

6, drilling a rod;

7-a discharge table, 71-an annular groove, 72-an air expansion shaft, 73-an air vent of the air expansion shaft, and 74-a drainage groove;

8, a lifting device.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

Example 1

The invention is further described below with reference to fig. 1-9, and a flange drilling device is shown in fig. 1-3, and includes a frame 1, a motor 4, a drill rod 6, a discharging platform 7, a lifting device 8, wherein the frame 1 includes a bottom plate 11 and a vertical plate 12 which are fixedly connected, the discharging platform 7 is located above the bottom plate 11, the flange fixing device is installed on the upper surface of the discharging platform 7, the drill rod 6 is located above the discharging platform 7, the flange drilling device further includes a gear transmission device 5, a horizontal mounting plate I2 and a horizontal mounting plate II 3, the mounting plate I2 and the mounting plate II 3 are vertically detachably connected with the vertical plate 12, and the mounting plate I2 is located right above the mounting plate II 3.

As shown in fig. 4, the gear transmission 5 includes a driving gear 51, eight driven gears 52, a vertical driving shaft 53, and eight vertical driven shafts 54; eight driven gears 52 are evenly distributed on the periphery of the driving gear 51 and are simultaneously meshed with the driving gear 51; the drive gear 51 is mounted on a drive shaft 53 and each driven gear 52 is mounted (keyed) on a respective driven shaft 54.

As shown in fig. 3, bearings are installed at positions corresponding to the driving shaft 53 and the driven shafts 54 of the mounting plates one 2 and two 3, and both ends of the portion of the driving shaft 53 and the driven shafts 54 between the mounting plates one 2 and two 3 are installed in the corresponding bearings, respectively.

As shown in fig. 1-3, the motor 4 is installed above the first mounting plate 2, and the output end of the motor 4 is in driving connection with the end of the driving shaft 53 far away from the second mounting plate 3.

As shown in fig. 1-3, the lower end of the driven shaft 54 is provided with drill rods 6 through a coupler, the number of the drill rods 6 is equal to the number (eight) of the flange bolt holes, and the center line of the drill rods 6 is superposed with the center line of the flange bolt holes; the distance from the central line of the drill rod 6 to the central line of the driving shaft 53 is equal to the distance from the central line of the flange bolt hole to the central line of the flange.

The technical scheme can realize that: the mounting plate I2 and the mounting plate II 3 are vertically and detachably connected with a vertical plate 12 of the rack respectively, the gear transmission device 5 is arranged between the mounting plate I2 and the mounting plate II 3, and the gear transmission device 5 can be replaced by dismounting and mounting the mounting plate I2 and the mounting plate II 3 (the mounting plate II 3 is supported by a front fork of a forklift, so that the mounting plate I2, the mounting plate II 3 and the gear transmission device 5 between the mounting plate I2 and the mounting plate II 3 can be dismounted or mounted), so that the gear transmission device 5 is adaptive to a flange to be processed; the structure has strong rigidity, can ensure the processing precision of the flange bolt hole, and has stable and reliable long-term operation; the machining of a plurality of bolt holes can be completed at one time.

As shown in fig. 6-8, the discharging table 7 is a vertical cylinder, the center line of the discharging table 7 is coincident with the center line of the driving shaft 53, the flange fixing device is an inflatable shaft 72 vertically mounted at the center of the upper surface of the discharging table 7, and an air nozzle is mounted at the bottom end of the inflatable shaft 72; an air inflation shaft vent hole 73 is formed in the curved surface of the discharging table 7, and an air pipe is laid in the air inflation shaft vent hole 73; the air pipe connects the air tap of the air expansion shaft 72 with the air pump for air suction and inflation outside the discharging platform 7.

As shown in fig. 6-8, the upper surface of the discharging platform 7 is provided with an annular groove 71, and the annular groove 71 is positioned right below the drill rod 6.

The first mounting plate 2 and the second mounting plate 3 are respectively connected with the vertical plate 12 through bolts and nuts.

As shown in fig. 1 to 3, the lifting device 8 is a cylinder vertically mounted on the bottom plate 11, and the discharge table 7 is horizontally mounted on the end of a piston rod of the lifting device 8.

As shown in fig. 4, the drive gear 51 and the plurality of driven gears 52 are all spur gears.

A flange plate drilling method based on flange drilling equipment comprises the following steps:

step one, selecting a first mounting plate 2 and a second mounting plate 3 according to specifications of a flange to be processed (such as DN150 outer diameter 285mm, eight bolt holes, 22mm bolt hole diameter and 240mm bolt hole center circle diameter), mounting the first mounting plate 2 and the second mounting plate 3 on a vertical plate 12, and mounting a corresponding gear transmission device 5 between the first mounting plate 2 and the second mounting plate 3 (the number of driven gears 52 is eight, and the distance from the center line of the driven gear 52 to the center line of a driving gear 51 is 120 mm); the drill rod 6 is selected to be installed below the driven shaft 54, and the diameter of a bolt hole machined by the drill rod 6 meets the standard requirement (22 mm); the material discharging platform 7 is selected to be installed at the end part of a piston rod of the lifting device 8, the flange can be fixed after the air inflation shaft 72 on the material discharging platform 7 is inflated, and the annular groove 71 is positioned right below the drill rod 6 (the diameter of the central circle of the annular groove 71 is 240 mm);

placing the flange to be processed on the upper surface of the discharging table 7, and enabling the air inflation shaft 72 to penetrate through a central hole of the flange; the air inflation shaft 72 is inflated through an air nozzle, and the flange is fixed on the discharging platform 7 through the air inflation shaft 72;

step three, starting the motor 4, wherein the motor 4 drives the driving shaft 53 and the driving gear 51 to rotate, the driven gears 52 meshed with the driving gear 51 simultaneously are driven, and the driven gears 52 drive the driven shaft 54 and the drill rod 6 to rotate; simultaneously starting the lifting device 8, driving the discharging platform 7 and the flange to be processed to move upwards by the lifting device 8, and contacting the drill rod 6 with the flange and processing a bolt hole meeting the requirement in the moving process;

fourthly, simultaneously processing bolt holes on a plurality of drill rods 6, and processing a plurality of bolt holes on the flange at one time;

and step five, after the flange bolt hole is machined, the lifting device 8 drives the discharging platform 7 to move downwards, the inflatable shaft 72 releases the fixation of the flange, and the flange with the machined bolt hole is taken down for machining the next flange.

Example 2

The difference between this example and example 1 is: the flange to be processed is DN100 with the outer diameter of 210mm, the number of the bolt holes is four, the diameter of the bolt hole is 18mm, and the diameter of the central circle of the bolt hole is 170 mm.

As shown in fig. 5, the gear transmission device 5 is adopted, the number of the driven gears 52 is four, and the distance from the central line of the driven gear 52 to the central line of the driving gear 51 is 85 mm; the diameter of the central circle of the annular groove 71 of the discharge platform 7 is 170 mm.

As shown in fig. 9, a drain groove 74 is further fixedly provided on the outer edge of the material discharge table 7, and a drain pipe is attached to the bottom surface of the drain groove 74.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may apply the above-mentioned technical details to other fields by using the equivalent embodiments with equivalent changes or modifications, but any simple modification and equivalent changes made to the above embodiments according to the technical spirit of the present invention may still fall within the protection scope of the technical solution of the present invention.