A positioning drilling device for processing a turntable brake disc

Abstract

The present invention relates to the technical field of drilling devices, and specifically to a positioning drilling device for processing a rotary disc brake disc, comprising a machine base, a circular plate fixedly mounted on the machine base through a column, the side wall of the circular plate rotatably connected to an outer frame, the inner side wall of the outer frame slidably connected to a circular ring block, and the inside of the circular ring block is provided with a clamping mechanism for clamping the rotary disc brake disc; the side wall of the circular ring block is fixedly connected to an annular toothed belt, the inner wall of the outer frame penetrates and rotatably connects to a rotating shaft, the side wall at one end of the rotating shaft is fixedly connected to a first gear, and the side wall at the other end of the rotating shaft is fixedly connected to a first bevel gear. The present invention provides structures such as a first gear and an annular toothed belt, and the drill head part of the first drilling machine will drill an arc-shaped hole groove for the rotary disc brake disc during the radial movement of the rotary disc brake disc, so that the rotary disc brake disc and the brake pad can be conveniently discharged from the arc-shaped hole groove when the brake is in operation.

Description

Technical Field

[0001] The invention relates to the technical field of drilling devices, and in particular to a positioning drilling device for processing a rotary disc brake disc. Background Art

[0002] The rotating disc brake disc is a disc-shaped structure, and it rotates when the car is moving. The brake caliper clamps the brake disc to generate braking force. When you step on the brake, it clamps the brake disc to slow down or stop the car. At present, during the production process of rotating disc brake discs, it is often necessary to drill holes in them, so that the rotating disc brake disc has many holes on the circumference, called air ducts, in order to achieve the purpose of heat dissipation through air convection in the air ducts when the car is driving. Some rotating disc brake discs also need to have arc-shaped holes and grooves on their surfaces, which is to facilitate the discharge of debris generated by the friction between the rotating disc brake disc and the brake pad along the arc-shaped holes and grooves.

[0003] The current positioning drilling device for processing a turntable brake disc can often only open holes for heat dissipation on the turntable brake disc during drilling processing, while other grooving equipment is required for the arc-shaped hole grooves for chip removal, and the processing process is relatively cumbersome; and the debris and high temperature generated during the drilling process are also difficult to be well handled, and its use has certain limitations.

[0004] Therefore, we propose a positioning drilling device for processing a turntable brake disc. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a positioning drilling device for processing a turntable type brake disc.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A positioning drilling device for processing a rotary brake disc comprises a machine base, a circular plate is fixedly mounted on the machine base through a column, a side wall of the circular plate is rotatably connected to an outer frame, an inner side wall of the outer frame is slidably connected to a circular ring block, and a clamping mechanism for clamping the rotary brake disc is arranged inside the circular ring block;

[0008] The side wall of the circular ring block is fixedly connected with an annular toothed belt, the inner wall of the outer frame passes through and is rotatably connected with a rotating shaft, the side wall of one end of the rotating shaft is fixedly connected with a first gear, the side wall of the other end of the rotating shaft is fixedly connected with a first bevel gear, and the side wall of the circular plate is fixedly installed with a second bevel gear, the outer frame is installed with an L-shaped plate, the top inner wall of the L-shaped plate is provided with a rectangular hole, the inner wall of the rectangular hole is slidably connected with a rectangular cylinder, the inner wall of the rectangular cylinder is sealingly and slidably connected with a first piston column, the bottom wall of the first piston column is fixedly installed with a first drilling machine, the side wall of the rectangular cylinder passes through and is fixedly connected with an extrusion cylinder, the inner wall of the extrusion cylinder is provided with a through hole, the inner wall of the extrusion cylinder is sealingly and slidably connected with a second piston column, the second piston column is elastically connected to the inner wall of the extrusion cylinder through a return spring, and the side wall of the rotating shaft is fixedly connected with a cam.

[0009] Preferably, a first cylinder is fixedly connected to the inner wall of the L-shaped plate, a second cylinder is sealingly and slidably connected to the inner wall of the first cylinder, a second drilling machine is fixedly connected to the bottom wall of the second cylinder, a magnetic spring is fixedly connected to the inner wall of the second cylinder, a sliding plug is fixedly connected to the other end of the magnetic spring, the sliding plug is sealingly and slidably connected to the inner wall of the second cylinder, the side wall of the first cylinder is fixedly connected to the inner wall of the rectangular cylinder through a connecting pipe, an electromagnetic valve is installed inside the connecting pipe, and the connecting pipe is a telescopic tube body.

[0010] Preferably, the top wall of the base is fixedly connected with a vertical plate, the side wall of the vertical plate is fixedly connected with a motor, the output end of the motor passes through the side wall of the circular plate and is fixedly connected to the outer frame, the inner wall of the rectangular hole is fixedly connected with a tension spring, the other end of the tension spring is fixedly connected to the side wall of the rectangular cylinder, the first bevel gear and the second bevel gear are meshingly connected, the first gear is meshingly connected to the annular toothed belt, and the second piston column and the cam slide against each other.

[0011] Preferably, the clamping mechanism includes an annular cavity opened on the inner wall of the annular block, the inner wall of the annular cavity is slidably connected with an annular rack, the inner wall of the annular cavity is evenly rotatably connected with a plurality of second gears, the inner wall of the annular cavity is fixedly connected with a micro motor, the output end of the micro motor is fixedly connected to the gear shaft portion of one of the second gears, the inner wall of the annular cavity is slidably connected with a plurality of spur racks, one end of each of the spur racks is fixedly connected with a clamping plate, and the clamping plate is provided with a flushing mechanism for flushing and dissipating heat during the drilling process.

[0012] Preferably, the flushing mechanism includes a plurality of boxes which penetrate and are fixedly connected to the inner wall of the circular ring block, each of the inner walls of the boxes is sealingly and slidably connected to a slide plate, the side walls of the slide plate are fixedly connected to a tension spring, and the end of each spur rack away from the clamping plate penetrates the adjacent inner wall of the box and is fixedly connected to the corresponding tension spring.

[0013] Preferably, the flushing mechanism also includes a flushing nozzle fixedly connected to the side wall of the clamping plate, and a one-way liquid inlet pipe and a one-way liquid outlet pipe are fixedly connected through the inner wall of the box body. The end of the one-way liquid outlet pipe away from the box body is fixedly connected to the adjacent flushing nozzle, and a solenoid valve is installed inside the one-way liquid outlet pipe.

[0014] Preferably, a plurality of arc-shaped boxes are fixedly connected to the side wall of the annular block, the interior of the arc-shaped boxes is filled with cleaning liquid, and one end of the one-way liquid inlet pipe away from the box body is fixedly connected to an adjacent arc-shaped box.

[0015] Preferably, each of the second gears is meshedly connected with an annular rack, the second gear is meshedly connected with an adjacent spur rack, and the spur rack and the annular rack are staggered.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. Turn on the micro motor, and by setting structures such as an annular rack, multiple second gears and a spur rack, multiple clamping plates can automatically position and clamp the rotary disc brake disc from multiple directions;

[0018] 2. Turn on the motor. The output end of the motor drives the outer frame and the rotating shaft fixedly connected to it to rotate. Under the action of the first bevel gear and the second bevel gear, the rotating shaft drives the cam fixedly connected to its side wall to push the second piston column to move. Then the hydraulic oil inside the extrusion cylinder will enter the rectangular cylinder and the first cylindrical cylinder, so that the first piston column drives the first drilling machine to move downward synchronously to prepare for drilling and grooving.

[0019] 3. When the hydraulic oil inside the extrusion cylinder can no longer enter the rectangular cylinder and the first circular cylinder, the second piston column will drive the extrusion cylinder and the rectangular cylinder to slide along the inner wall of the rectangular hole for a distance, and the first piston column will drive the first drilling machine to move radially along the turntable brake disc. By setting the first gear and the annular toothed belt and other structures, the annular block drives the turntable brake disc to rotate through the clamping mechanism. Then, the drill bit of the first drilling machine will drill holes in the turntable brake disc during the radial movement of the turntable brake disc to open arc-shaped holes, so that the turntable brake disc and the brake pad can discharge the debris generated by friction from the arc-shaped holes during the braking operation.

[0020] 4. By setting up structures such as magnetic springs, connecting pipes and pistons, when the arc-shaped hole grooves opened by the first drilling machine are completed, the motor is turned off and the power to the magnetic spring is cut off. The magnetic spring will drive the sliding plug to slide upward and seal, thereby squeezing out the hydraulic oil inside the second cylinder. This part of the hydraulic oil will push the second cylinder to slide downward, and the second drilling machine will be turned on. The second drilling machine will open a circular ventilation hole on the rotary brake disc;

[0021] 5. Since the outer frame can also rotate by itself, the outer frame will drive the rotary disc brake disc to rotate with the output end of the motor as the axis through the circular ring block and the clamping mechanism, so that the debris generated when the first drilling machine and the second drilling machine perform drilling operations will fall more easily, and since the outer frame drives the rotary disc brake disc and the first drilling machine and the second drilling machine to rotate and drive the air flow, the heat generated during the drilling operation is also easier to dissipate;

[0022] 6. When flushing and cooling are required during the drilling process, open the solenoid valve in the one-way liquid outlet pipe. Then, under the action of the tension spring, the slide plate seal will be driven to slide a certain distance, and then the cleaning liquid inside the box will be squeezed to the flushing nozzle and sprayed out to flush and remove the debris in the drilling process, and cool the drilling part of the turntable brake disc and the drill bit parts of the first drilling machine and the second drilling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a positioning drilling device for machining a turntable brake disc proposed by the present invention;

[0024] Figure 2 A top view schematic diagram of a positioning drilling device for machining a turntable brake disc proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the interior of a rectangular hole, a rectangular cylinder, an extrusion cylinder, a first cylinder, and a second cylinder in a positioning drilling device for machining a rotary disc brake disc proposed by the present invention;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of the structure of part A;

[0027] Figure 5 This is a schematic diagram of the structure inside the annular cavity in a positioning drilling device for machining a rotary disc brake disc proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the positional relationship between a cam and a second piston column in a positioning drilling device for machining a rotary disc brake disc proposed by the present invention.

[0029] In the figure: 1, machine base; 2, vertical plate; 3, column; 4, connecting pipe; 5, circular plate; 6, second helical gear; 7, motor; 8, outer frame; 9, rotating shaft; 10, first helical gear; 11, ring block; 12, first gear; 13, annular toothed belt; 14, L-shaped plate; 15, rectangular hole; 16, rectangular cylinder; 17, first piston rod; 18, first drilling machine; 19, tension spring; 20, extrusion cylinder; 21, return spring; 22, second piston rod; 23, cam; 24, first cylinder; 25, second cylinder; 26, sliding plug; 27, magnetic spring; 28, second drilling machine; 29, ring cavity; 30, annular rack; 31, micro motor; 32, second gear; 33, straight rack; 34, clamping plate; 35, box body; 36, tension spring; 37, sliding plate; 38, one-way liquid inlet pipe; 39, one-way liquid outlet pipe; 40, arc-shaped box; 41, flushing nozzle. Specific implementation mode

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Refer to Figure 1 - Figure 6 , a positioning drilling device for processing a rotary brake disc, including a machine base 1, a column 3 fixedly connected to the machine base 1, a circular plate 5 fixedly installed on the top wall of the column 3, an outer frame 8 rotatably connected to the side wall of the circular plate 5. The outer frame 8 has a C-shaped structure when viewed from the side and a Y-shaped structure when viewed from above. A ring block 11 is slidably connected to the inner side wall of the outer frame 8, and a clamping mechanism for clamping the rotary brake disc is provided inside the ring block 11;

[0032] The side wall of the ring block 11 is fixedly connected with an annular toothed belt 13. A rotating shaft 9 is rotatably connected through the inner wall of the outer frame 8. One end side wall of the rotating shaft 9 is fixedly connected with a first gear 12, and the other end side wall of the rotating shaft 9 is fixedly connected with a first helical gear 10. A second helical gear 6 is fixedly installed on the side wall of the circular plate 5. An L-shaped plate 14 is installed on the outer frame 8. A rectangular hole 15 is opened on the top inner wall of the L-shaped plate 14. A rectangular cylinder 16 is slidably connected to the inner wall of the rectangular hole 15. A first piston rod 17 is hermetically slidably connected to the inner wall of the rectangular cylinder 16. A first drilling machine 18 is fixedly installed on the bottom wall of the first piston rod 17. A through hole is opened on the side wall of the rectangular cylinder 16 and fixedly connected with an extrusion cylinder 20. A second piston rod 22 is hermetically slidably connected to the inner wall of the extrusion cylinder 20. The second piston rod 22 is elastically connected to the inner wall of the extrusion cylinder 20 through a return spring 21. A cam 23 is fixedly connected to the side wall of the rotating shaft 9.

[0033] A first cylinder 24 is fixedly connected to the inner wall of the L-shaped plate 14, with the opening of the first cylinder 24 facing downward. A second cylinder 25 is sealingly and slidably connected to the inner wall of the first cylinder 24, with the opening of the second cylinder 25 facing upward. A vent is provided on the bottom wall of the second cylinder 25. A second drilling machine 28 is fixedly connected to the bottom wall of the second cylinder 25. A magnetic spring 27 is fixedly connected to the inner wall of the second cylinder 25. A sliding plug 26 is fixedly connected to the other end of the magnetic spring 27. The sliding plug 26 is sealingly and slidably connected to the inner wall of the second cylinder 25. The side wall of the first cylinder 24 is fixedly connected to the inner wall of the rectangular cylinder 16 through the connecting pipe 4. An electromagnetic valve is installed inside the connecting pipe 4, and the connecting pipe 4 is a telescopic tube body.

[0034] The top wall of the base 1 is fixedly connected to the vertical plate 2, the side wall of the vertical plate 2 is fixedly connected to the motor 7, the output end of the motor 7 passes through the side wall of the circular plate 5 and is fixedly connected to the outer frame 8, the inner wall of the rectangular hole 15 is fixedly connected to the tension spring 19, the other end of the tension spring 19 is fixedly connected to the side wall of the rectangular tube 16, the first bevel gear 10 is meshed with the second bevel gear 6, the first gear 12 is meshed with the annular toothed belt 13, and the second piston column 22 and the cam 23 slide against each other.

[0035] The clamping mechanism includes an annular cavity 29 opened on the inner wall of the annular block 11, an annular rack 30 is slidably connected to the inner wall of the annular cavity 29, a plurality of second gears 32 are evenly rotatably connected to the inner wall of the annular cavity 29, a micro motor 31 is fixedly connected to the inner wall of the annular cavity 29, the output end of the micro motor 31 is fixedly connected to the gear shaft portion of one of the second gears 32, a plurality of spur racks 33 are slidably connected through the inner wall of the annular cavity 29, one end of each spur rack 33 is fixedly connected to a clamping plate 34, and a flushing mechanism for flushing and dissipating heat during the drilling process is provided on the clamping plate 34.

[0036] The flushing mechanism includes a plurality of boxes 35 evenly distributed and fixedly connected to the inner wall of the circular ring block 11. The inner wall of each box 35 is sealed and slidably connected with a slide plate 37. The side wall of the slide plate 37 is fixedly connected with a tension spring 36. The end of each spur rack 33 away from the clamping plate 34 penetrates the inner wall of the adjacent box 35 and is fixedly connected to the corresponding tension spring 36.

[0037] The flushing mechanism also includes a flushing nozzle 41 fixedly connected to the side wall of the clamping plate 34, and a one-way liquid inlet pipe 38 and a one-way liquid outlet pipe 39 are fixedly connected to the inner wall of the box body 35. The end of the one-way liquid outlet pipe 39 away from the box body 35 is fixedly connected to the adjacent flushing nozzle 41, and an electromagnetic valve is installed inside the one-way liquid outlet pipe 39.

[0038] A plurality of arc boxes 40 are fixedly connected to the side wall of the annular block 11, and the interior of the arc boxes 40 is filled with cleaning liquid. The end of the one-way liquid inlet pipe 38 away from the box body 35 is fixedly connected to the adjacent arc box 40, and a one-way balancing valve is installed on the inner wall of the arc box 40 to balance the air pressure. The one-way liquid inlet pipe 38 only allows the cleaning liquid inside the arc box 40 to enter the interior of the box body 35, and the one-way liquid outlet pipe 39 only allows the cleaning liquid inside the box body 35 to be squeezed to the flushing nozzle 41 for spraying.

[0039] Each second gear 32 is meshed and connected with the annular rack 30 , and the second gear 32 is meshed and connected with the adjacent spur rack 33 , and the spur rack 33 and the annular rack 30 are staggered.

[0040] In the present invention, the user moves the turntable brake disc from the bottom of the annular block 11 to a position horizontal to the multiple clamping plates 34, and then turns on the micro motor 31, which is a forward and reverse motor. The output end of the micro motor 31 drives the second gear 32 fixedly connected to it to rotate, and the second gear 32 drives the annular rack 30 meshing with it to slide on the inner wall of the annular cavity 29 to produce a rotation effect, and the annular rack 30 drives the other multiple second gears 32 to rotate synchronously, then each second gear 32 will drive the spur rack 33 meshing with it to move a distance, then the spur rack 33 will drive the clamping plate 34 fixedly connected at one end thereof to move in the direction close to the turntable brake disc, until the multiple clamping plates 34 automatically position and clamp the turntable brake disc from multiple directions.

[0041] When each spur rack 33 moves toward the direction approaching the rotary brake disc, the solenoid valve inside the one-way liquid outlet pipe 39 is in a closed state, so the spur rack 33 can only pull the tension spring 36 fixedly connected thereto to extend, and the corresponding slide plate 37 will not slide sealingly.

[0042] Then, the motor 7 is turned on, and the output end of the motor 7 drives the outer frame 8 fixedly connected thereto to rotate, so that the outer frame 8 drives the rotating shaft 9 to rotate. Since the first bevel gear 10 fixedly connected to one end of the rotating shaft 9 is meshed and connected with the second bevel gear 6 fixed to the side wall of the circular plate 5, the first bevel gear 10 will drive the rotating shaft 9 to rotate, and the rotating shaft 9 drives the cam 23 fixedly connected to its side wall to rotate, and the cam 23 drives the second piston column 22 sliding against it to reciprocate, that is, when the raised portion of the cam 23 gradually slides against the second piston column 22, the second piston column 22 will first slide to the left in a sealed manner (such as Figure 3As shown), the extrusion cylinder 20 is filled with hydraulic oil, then the hydraulic oil inside the extrusion cylinder 20 will enter the rectangular cylinder 16 through the through hole, and then enter the first cylinder 24 through the connecting pipe 4, and then the hydraulic oil inside the rectangular cylinder 16 will push the first piston column 17 to slide downward in the vertical direction for a distance, and the first drilling machine 18 fixedly connected to the bottom wall of the first piston column 17 will move downward for a distance synchronously. It should be noted that the stroke of the first piston column 17 is limited. After the first piston column 17 moves downward to the end of the stroke, it will be in a stationary state, and the hydraulic oil can no longer enter the rectangular cylinder 16.

[0043] When the hydraulic oil inside the extrusion cylinder 20 can no longer enter the rectangular cylinder 16 and the first cylinder 24, the second piston column 22 will drive the extrusion cylinder 20 and the rectangular cylinder 16 to slide along the inner wall of the rectangular hole 15 for a distance, and the first piston column 17 will drive the first drilling machine 18 to move along the radial direction of the rotary disc brake disc. Since the rotating shaft 9 will also drive the first gear 12 to rotate synchronously, and since the first gear 12 and the annular toothed belt 13 are meshed and connected, the annular toothed belt 13 will drive the circular ring block 11 to slide on the inner wall of the outer frame 8 to produce a rotation effect. When the first drilling machine 18 drills a hole in the rotary disc brake disc, the circular ring block 11 will drive the rotary disc brake disc to rotate through the clamping mechanism. Then, the drill bit part of the first drilling machine 18 will drill a hole in the rotary disc brake disc during the radial movement of the rotary disc brake disc to open an arc-shaped hole groove, which is convenient for the rotary disc brake disc and the brake pad to discharge the debris generated by friction from the arc-shaped hole groove during the braking operation.

[0044] At the same time, when the hydraulic oil enters the first cylinder 24, the controller energizes the magnetic spring 27, and the magnetic spring 27 contracts after being energized. This is because the magnetic spring 27 interacts with the current in the external magnetic field under the action of electromagnetic induction to generate pulling forces of different sizes to control the tensile deformation and movement state of the magnetic spring 27. Then the magnetic spring 27 will drive the sliding plug 26 to slide downward in a sealed manner, so that the hydraulic oil entering the first cylinder 24 enters the second cylinder 25. After the second cylinder 25 is filled with hydraulic oil, the solenoid valve in the connecting pipe 4 is closed from the open state. At this time, the hydraulic oil can no longer enter the first cylinder 24. Inside the cylinder 24, after the arc-shaped hole groove opened by the first drilling machine 18 is completed, the motor 7 is shut down for a period of time. At this time, the annular block 11 cannot drive the turntable brake disc to rotate through the clamping mechanism, and then the magnetic spring 27 is powered off, so that the magnetic spring 27 will extend, and the magnetic spring 27 will drive the sliding plug 26 to slide upward and seal, thereby squeezing the hydraulic oil inside the second cylinder 25 outward. Since the solenoid valve in the connecting pipe 4 is closed, this part of the hydraulic oil will push the second cylinder 25 to slide downward in the opposite direction, and the second drilling machine 28 will be turned on, and the second drilling machine 28 will open a circular ventilation hole on the turntable brake disc.

[0045] Then the above process is repeated to open a plurality of arc-shaped slots and a plurality of circular ventilation holes on the rotary disc brake disc.

[0046] Since the outer frame 8 can also rotate by itself, the outer frame 8 will drive the turntable brake disc to rotate around the output end of the motor 7 as the axis through the annular block 11 and the clamping mechanism. Then, the debris generated when the first drilling machine 18 and the second drilling machine 28 perform the drilling operation will fall off more easily. In addition, since the outer frame 8 drives the turntable brake disc and the first drilling machine 18 and the second drilling machine 28 to rotate, it drives the air flow, so that the heat generated during the drilling operation is also easier to dissipate.

[0047] Finally, when flushing and cooling are required during the drilling process, the solenoid valve in the one-way liquid outlet pipe 39 is opened, and the slide plate 37 is driven to slide for a distance under the action of the tension spring 36, and then the cleaning liquid inside the box 35 is squeezed to the flushing nozzle 41 for spraying, so as to flush and remove the debris in the drilling process, and cool the drilling part of the turntable brake disc and the drill bit parts of the first drilling machine 18 and the second drilling machine 28.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A positioning drilling device for processing a rotary brake disc, comprising a machine base (1), characterized in that: A circular plate (5) is fixedly mounted on the machine base (1) via a column (3); a side wall of the circular plate (5) is rotatably connected to an outer frame (8); an inner side wall of the outer frame (8) is slidably connected to a circular ring block (11); a clamping mechanism for clamping a rotary disc brake disc is provided inside the circular ring block (11); The side wall of the annular block (11) is fixedly connected to an annular toothed belt (13); the inner wall of the outer frame (8) is penetrated by a rotating shaft (9) for rotation connection; the side wall at one end of the rotating shaft (9) is fixedly connected to a first gear (12); the side wall at the other end of the rotating shaft (9) is fixedly connected to a first bevel gear (10); the side wall of the circular plate (5) is fixedly mounted with a second bevel gear (6); an L-shaped plate (14) is mounted on the outer frame (8); a rectangular hole (15) is formed on the inner wall of the top of the L-shaped plate (14); a rectangular cylinder (15) is slidably connected to the inner wall of the rectangular hole (15); 6), the inner wall of the rectangular cylinder (16) is sealingly and slidably connected to a first piston column (17), the bottom wall of the first piston column (17) is fixedly mounted with a first drilling machine (18), the side wall of the rectangular cylinder (16) is penetrated and fixedly connected with an extrusion cylinder (20), the inner wall of the extrusion cylinder (20) is provided with a through hole, the inner wall of the extrusion cylinder (20) is sealingly and slidably connected to a second piston column (22), the second piston column (22) is elastically connected to the inner wall of the extrusion cylinder (20) via a return spring (21), and the side wall of the rotating shaft (9) is fixedly connected with a cam (23).

2. A positioning drilling device for processing a rotary disc brake disc according to claim 1, characterized in that: A first cylinder (24) is fixedly connected to the inner wall of the L-shaped plate (14); a second cylinder (25) is sealingly and slidably connected to the inner wall of the first cylinder (24); a second drilling machine (28) is fixedly connected to the bottom wall of the second cylinder (25); a magnetic spring (27) is fixedly connected to the inner wall of the second cylinder (25); a sliding plug (26) is fixedly connected to the other end of the magnetic spring (27); the sliding plug (26) and the inner wall of the second cylinder (25) are sealingly and slidably connected; the side wall of the first cylinder (24) is fixedly connected to the inner wall of the rectangular cylinder (16) via a connecting pipe (4); an electromagnetic valve is installed inside the connecting pipe (4); and the connecting pipe (4) is a telescopic pipe body.

3. A positioning drilling device for processing a rotary disc brake disc according to claim 2, characterized in that: The top wall of the machine base (1) is fixedly connected to a vertical plate (2), the side wall of the vertical plate (2) is fixedly connected to a motor (7), the output end of the motor (7) passes through the side wall of the circular plate (5) and is fixedly connected to the outer frame (8), the inner wall of the rectangular hole (15) is fixedly connected to a tension spring (19), the other end of the tension spring (19) is fixedly connected to the side wall of the rectangular cylinder (16), the first bevel gear (10) is meshedly connected to the second bevel gear (6), the first gear (12) is meshedly connected to the annular toothed belt (13), and the second piston column (22) and the cam (23) slide against each other.

4. A positioning drilling device for processing a rotary disc brake disc according to claim 1, characterized in that: The clamping mechanism comprises an annular cavity (29) formed on the inner wall of the annular block (11); an annular rack (30) is slidably connected to the inner wall of the annular cavity (29); a plurality of second gears (32) are evenly rotatably connected to the inner wall of the annular cavity (29); a micro motor (31) is fixedly connected to the inner wall of the annular cavity (29); an output end of the micro motor (31) is fixedly connected to a gear shaft portion of one of the second gears (32); a plurality of spur racks (33) are slidably connected through the inner wall of the annular cavity (29); one end of each of the spur racks (33) is fixedly connected to a clamping plate (34); and a flushing mechanism for flushing and dissipating heat during the drilling process is provided on the clamping plate (34).

5. A positioning drilling device for machining a rotary disc brake disc according to claim 4, characterized in that: The flushing mechanism comprises a plurality of boxes (35) uniformly distributed and penetrating and fixedly connected to the inner wall of the annular block (11); the inner wall of each box (35) is sealed and slidably connected to a slide plate (37); the side wall of the slide plate (37) is fixedly connected to a tension spring (36); and one end of each spur rack (33) away from the clamping plate (34) penetrates the inner wall of an adjacent box (35) and is fixedly connected to the corresponding tension spring (36).

6. A positioning drilling device for processing a rotary disc brake disc according to claim 5, characterized in that: The flushing mechanism further comprises a flushing nozzle (41) fixedly connected to the side wall of the clamping plate (34); a one-way liquid inlet pipe (38) and a one-way liquid outlet pipe (39) are fixedly connected and penetrate the inner wall of the box body (35); one end of the one-way liquid outlet pipe (39) away from the box body (35) is fixedly connected to an adjacent flushing nozzle (41); and a solenoid valve is installed inside the one-way liquid outlet pipe (39).

7. A positioning drilling device for machining a rotary disc brake disc according to claim 6, characterized in that: A plurality of arc-shaped boxes (40) are fixedly connected to the side wall of the annular block (11), the arc-shaped boxes (40) are filled with cleaning liquid, and one end of the one-way liquid inlet pipe (38) away from the box body (35) is fixedly connected to an adjacent arc-shaped box (40).

8. A positioning drilling device for processing a rotary disc brake disc according to claim 4, characterized in that: Each of the second gears (32) is meshedly connected to an annular rack (30), and the second gear (32) is meshedly connected to an adjacent spur rack (33), and the spur rack (33) and the annular rack (30) are arranged in an offset manner.

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