A drilling and grinding combination machine for processing drum brake pads

Abstract

This utility model discloses a drilling and grinding combination machine for processing drum brake pads, comprising a frame; a drilling mechanism, a transition mechanism, and a grinding mechanism are arranged horizontally on the frame; the drilling mechanism includes a drilling seat that rotates horizontally on the frame, with a spring steel belt with a tension cylinder spanning across the upper middle part of the drilling seat; a drilling mechanism perpendicular to the top surface of the drilling seat is connected to the front side of the drilling seat on the frame; the grinding mechanism includes a grinding seat that rotates horizontally on the frame, with a grinding mechanism connected to the front side of the grinding seat on the frame; the transition mechanism includes a transition seat, with a pusher cylinder horizontally facing the transition seat on the frame; a pusher frame spanning the transition seat and the grinding seat is connected to the frame, with a pusher mechanism connected to the pusher frame for pushing the drum brake pad from the transition seat to the grinding seat. This utility model not only reduces labor intensity but also has the advantage of high work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of drum brake pad processing equipment, and in particular to a drilling and grinding combination machine for drum brake pad processing. Background Technology

[0002] Most truck braking systems in China still use drum brakes, and the brake pads, which connect to the brake shoes, are a crucial component in this design. Drum brake pads are typically arc-shaped with multiple connecting holes. Manufacturing drum brake pads usually involves drilling and grinding the raw material to produce the finished product. However, current drum brake pad manufacturing processes require separate drilling and grinding machines, and manual handling of the brake pads between the two machines, resulting in high labor intensity and low efficiency for workers.

[0003] Therefore, existing drum brake pad processing equipment suffers from high labor intensity and low work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a drilling and grinding combination machine for processing drum brake pads. This invention not only reduces labor intensity but also has the advantage of high work efficiency.

[0005] The technical solution of this utility model is: a drilling and grinding combination machine for processing drum brake pads, including a frame; a drilling mechanism and a grinding mechanism are respectively connected to both sides of the frame, and a transition mechanism connected to the frame is provided between the drilling mechanism and the grinding mechanism.

[0006] The drilling mechanism includes a first rotating seat fixed on the frame, a drilling seat horizontally rotatably connected to the first rotating seat, and a first rotating motor fixed on the first rotating seat at one end of the drilling seat's rotating shaft; the top surface of the drilling seat is arc-shaped with the same curvature as the drum brake pad, and a first stop is fixed on the front side of the top surface of the drilling seat; a spring steel strip is horizontally arranged above the middle of the drilling seat, the front end of the spring steel strip is fixed to the middle of the first stop, and the rear end of the spring steel strip is connected to a tensioning cylinder fixed on the drilling seat; a drilling mechanism perpendicular to the top surface of the drilling seat is connected to the front side of the frame corresponding to the front of the drilling seat.

[0007] The grinding mechanism includes a second rotating seat fixed on the frame, a grinding seat horizontally rotatably connected to the second rotating seat, and a second rotating motor fixed on the second rotating seat at one end of the grinding seat's rotating shaft. The top surface of the grinding seat is arc-shaped with the same curvature as the drum brake pad. A second stop is fixed on the front side of the top surface of the grinding seat, and a clamping block is provided on the rear side of the top surface of the grinding seat. A clamping cylinder for driving the clamping block closer to or away from the grinding seat is connected between the clamping block and the grinding seat. The height of the clamping block and the second stop is less than or equal to the thickness of the drum brake pad. A grinding mechanism is connected to the front side of the grinding seat on the frame.

[0008] The transition mechanism includes a transition seat fixed on the frame. The top surface of the transition seat is arc-shaped with the same curvature as the drum brake pad. A third stop is fixed on the front side of the top surface of the transition seat. A pusher cylinder is horizontally oriented towards the transition seat on one side of the frame corresponding to the drilling seat. A pusher frame is connected to the frame and spans the transition seat and the grinding seat. A pusher mechanism for pushing the drum brake pad from the transition seat to the grinding seat is connected to the pusher frame.

[0009] In the aforementioned drilling and grinding combination machine for processing drum brake pads, a storage platform is fixed on the side of the frame corresponding to the drilling seat away from the transition seat. The top surface of the storage platform is at the same height as the drilling seat, and the distance between the storage platform and the drilling seat is less than half the width of the drum brake pad. The top surface of the storage platform is arc-shaped with the same curvature as the drum brake pad, and an upwardly extending storage baffle is fixed on the front side of the top surface of the storage platform. A horizontally arranged feeding cylinder is fixed on the side of the storage platform on the frame corresponding to the side away from the drilling seat. A U-shaped pusher block is fixed on the telescopic rod of the feeding cylinder. The thickness of the pusher block is the same as the thickness of the drum brake pad, and the length of the pusher block is greater than or equal to the width of the drum brake pad.

[0010] In the aforementioned drilling and grinding combination machine for processing drum brake pads, the drilling mechanism includes a fixed base fixed on a frame, two slides slidably connected laterally on the fixed base, and a first linear module for driving the slide to slide laterally relative to the fixed base connected between each slide and the fixed base; a drilling table perpendicular to the top surface of the drilling base is slidably connected to each slide, and a second linear module for driving the drilling table to slide relative to the slide is connected between the drilling table and its corresponding slide; a drilling machine perpendicular to the top surface of the drilling base is fixedly connected to each drilling table.

[0011] In the aforementioned drilling and grinding combination machine for processing drum brake pads, the grinding mechanism includes a cross slide fixed horizontally on the frame, a drive motor fixedly connected to the cross slide, a third rotating seat between the drive motor and the grinding seat, a grinding roller horizontally rotatably connected to the third rotating seat, and the grinding roller and the drive motor being connected by a transmission belt.

[0012] In the aforementioned drilling and grinding combination machine for processing drum brake pads, a protective cover is fixed on the third rotating seat and placed over the grinding roller. An opening is provided on the side of the protective cover near the grinding seat.

[0013] In the aforementioned drilling and grinding combination machine for processing drum brake pads, the pushing mechanism includes a slider slidably connected to a pushing frame. A reciprocating drive mechanism fixed to the pushing frame is connected to the slider. A lever extending downward to the top surface of the transition seat is rotatably connected to the slider near the drilling seat. One side of the top of the lever is in close contact with the side of the slider. A clearance groove is provided on the slider below the rotating part of the lever. When the reciprocating drive mechanism drives the slider to move towards the grinding seat, the top of the lever is limited by the slider and cannot rotate. The lever can push the drum brake pad to move. When the reciprocating drive mechanism drives the slider to move towards the transition seat, the bottom of the lever is subjected to force and can rotate into the clearance groove. The lever cannot push the drum brake pad to move.

[0014] In the aforementioned drilling and grinding combination machine for processing drum brake pads, the reciprocating drive mechanism includes a reciprocating drive motor fixed at one end of the pusher frame, a drive gear fixed on the output shaft of the reciprocating drive motor, a driven gear rotatably connected to the other end of the pusher frame on one side of the drive gear, a toothed belt sleeved between the driven gear and the drive gear, and the toothed belt fixedly connected to the slider.

[0015] In the aforementioned drilling and grinding combination machine for processing drum brake pads, a feeding port is provided on the frame at a position directly below the corresponding grinding seat, and an inclined guide plate is connected to the side of the feeding port near the grinding mechanism.

[0016] In the aforementioned drilling and grinding combination machine for processing drum brake pads, a downwardly inclined roller conveyor belt is connected to the bottom of the feed inlet on the frame, and the roller conveyor belt is arranged in a V-shape.

[0017] Compared with the prior art, this utility model connects the drilling seat in the drilling mechanism to a first rotating seat in a horizontally rotatable manner, and connects a drilling mechanism vertically facing the top surface of the drilling seat to the front side of the drilling seat. This allows the drilling seat to drive the drum brake pad placed on it to rotate relative to the drilling mechanism, thereby adjusting the drilling position and completing the drilling operation. A pusher cylinder is provided on one side of the drilling seat, horizontally facing the transition seat. The pusher cylinder can push the drum brake pad on the drilling seat onto the transition seat. A pusher mechanism is provided on the pusher frame, so that... The drum brake pads can be pushed from the transition seat to the grinding seat. The clamping cylinder on the grinding seat can drive the clamping block on its rear side to position and clamp the drum brake pads on the second stop edge on its front side. By making the grinding seat horizontally rotate and connected to the second rotating seat, and the grinding mechanism is connected to the front side of the grinding seat, the grinding seat can drive the drum brake pads placed on it to rotate relative to the grinding mechanism, thereby adjusting the grinding position and completing the grinding operation. There is no need for manual handling and transfer of the drum brake pads, which reduces labor intensity and improves work efficiency.

[0018] Furthermore, in this invention, a storage platform is fixed on the side of the punching seat away from the transition seat, and an upwardly extending discharge baffle is connected to the front side of the storage platform, allowing the storage platform to hold multiple drum brake pads. A horizontally arranged feeding cylinder is fixed on the side of the storage platform away from the punching seat, and a U-shaped pusher block with the same thickness as the drum brake pad is fixed on the telescopic rod of the feeding cylinder. This allows the feeding cylinder to drive the pusher block to extend and retract, enabling the drum brake pads to be fed one by one onto the storage platform, further reducing labor intensity and improving work efficiency.

[0019] By connecting a first linear module on the fixed base to drive the two slides to slide laterally, and connecting a second linear module on each slide to drive the two drilling platforms to slide vertically toward the top surface of the drilling base, and connecting a drilling machine on each drilling platform, the drilling mechanism can better control the drilling position and drilling depth.

[0020] By horizontally fixing a cross slide table to the frame, and installing a grinding roller and a drive motor on the cross slide table for transmission connection, the grinding mechanism can better control the grinding position and grinding depth. The grinding roller is covered with an open protective cover, ensuring grinding work while reducing the splashing of grinding debris, thus improving environmental friendliness.

[0021] The toothed belt is driven to rotate back and forth by a reciprocating drive motor, which allows the fixed slider on the toothed belt to slide between the two ends of the pusher frame. A lever extending downward to the top surface of the transition seat is rotatably connected to the side of the slider near the punching seat. The top of the lever is in close contact with the slider. A relief groove is provided on the slider below the rotating part of the lever. This means that when the slider moves from the transition seat to the grinding seat, the top of the lever is restricted by the slider and cannot rotate. The lever can push the drum brake pad to move. When the slider moves from the grinding seat to the transition seat, the bottom of the lever is subjected to force and rotates into the relief groove. The lever cannot push the drum brake pad.

[0022] The machine has a feeding port located directly below the grinding seat on the frame. An inclined guide plate is connected to the feeding port on the side near the grinding mechanism. As the grinding seat rotates downward, the drum brake pads on the grinding seat fall into the feeding port under the guidance of the guide plate due to gravity. The material is then conveyed outward by the V-shaped roller conveyor belt below the feeding port, thus completing the feeding process.

[0023] Therefore, this invention not only reduces labor intensity but also has the advantage of high work efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model after removing the drilling mechanism and the grinding mechanism;

[0026] Figure 3 yes Figure 2 Enlarged view of region A in the middle;

[0027] Figure 4 yes Figure 2 A structural diagram from another perspective;

[0028] Figure 5 This is a schematic diagram of the drilling mechanism;

[0029] Figure 6 This is a schematic diagram of the grinding mechanism;

[0030] Figure 7 This is a structural diagram of the pusher frame section;

[0031] Figure 8 This is a structural diagram of the feeding mechanism and the reciprocating drive mechanism;

[0032] Figure 9 This is a schematic diagram of the slider and lever structure;

[0033] Figure 10 This is a schematic diagram of the slider's structure.

[0034] The markings in the attached diagram are as follows: 1-Frame, 2-Rotating seat No. 1, 3-Drilling seat, 4-Rotating motor No. 1, 5-Side guard No. 1, 6-Spring steel belt, 7-Tensioning cylinder, 8-Rotating seat No. 2, 9-Grinding seat, 10-Rotating motor No. 2, 11-Side guard No. 2, 12-Transition seat, 13-Side guard No. 3, 14-Pushing cylinder, 15-Pushing frame, 16-Storage platform, 17-Storage baffle, 18-Feeding cylinder, 19-Pushing block, 20-Fixed seat, 21-Slide table, 22-Line No. 1 Module, 23-Drilling table, 24-Linear module No. 2, 25-Drilling machine, 26-Cross slide, 27-Drive motor, 28-Rotating seat No. 3, 29-Grinding roller, 30-Transmission belt, 31-Protective cover, 32-Opening, 33-Slider, 34-Pulley, 35-Relief groove, 36-Reciprocating drive motor, 37-Drive gear, 38-Driven gear, 39-Gear belt, 40-Discharge port, 41-Guide plate, 42-Roller conveyor belt, 43-Clamping block, 44-Clamping cylinder. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0036] Example. A drilling and grinding combination machine for processing drum brake pads, configured as follows: Figures 1 to 10As shown, the system includes a frame 1; a drilling mechanism and a grinding mechanism are respectively connected to both sides of the frame 1, and a transition mechanism connected to the frame 1 is provided between the drilling mechanism and the grinding mechanism; the drilling mechanism includes a first rotating seat 2 fixed on the frame 1, a drilling seat 3 horizontally rotatably connected to the first rotating seat 2, and a first rotating motor 4 fixed on the first rotating seat 2 at one end of the rotating shaft of the drilling seat 3; the top surface of the drilling seat 3 is arc-shaped with the same curvature as the drum brake pad, and the front side of the top surface of the drilling seat 3... A first retaining edge 5 is fixed; a spring steel band 6 is horizontally arranged above the middle of the punching seat 3, the front end of the spring steel band 6 is fixed to the middle of the first retaining edge 5, and the rear end of the spring steel band 6 is connected to a tensioning cylinder 7 fixed on the punching seat 3; a punching mechanism is connected to the front side of the punching seat 3 on the frame 1, which is perpendicular to the top surface of the punching seat 3; the grinding mechanism includes a second rotating seat 8 fixed on the frame 1, a grinding seat 9 is horizontally rotatably connected to the second rotating seat 8, and one end of the rotating shaft of the grinding seat 9 is connected to a cylinder fixed on the second rotating seat 1. A second rotating motor 10 is mounted on seat 8; the top surface of the grinding seat 9 is arc-shaped with the same curvature as the drum brake pad; a second stop 11 is fixed on the front side of the top surface of the grinding seat 9; a clamping block 43 is mounted on the rear side of the top surface of the grinding seat 9; a clamping cylinder 44 is connected between the clamping block 43 and the grinding seat 9 to drive the clamping block 43 closer to or further away from the grinding seat 9; the height of the clamping block 43 and the second stop 11 is less than or equal to the thickness of the drum brake pad; a grinding mechanism is connected to the front side of the grinding seat 9 on the frame 1; the... The transition mechanism includes a transition seat 12 fixed on the frame 1. The top surface of the transition seat 12 is arc-shaped with the same curvature as the drum brake pad. A third stop 13 is fixed on the front side of the top surface of the transition seat 12. A pusher cylinder 14 is horizontally arranged towards the transition seat 12 on one side of the frame 1 corresponding to the drilling seat 3. A pusher frame 15 is connected on the frame 1, spanning the transition seat 12 and the grinding seat 9. A pusher mechanism for pushing the drum brake pad from the transition seat 12 to the grinding seat 9 is connected to the pusher frame 15.

[0037] A storage platform 16 is fixed on the side of the frame 1 corresponding to the punching seat 3 away from the transition seat 12. The top surface of the storage platform 16 is at the same height as the punching seat 3, and the distance between the storage platform 16 and the punching seat 3 is less than half the width of the drum brake pad. The top surface of the storage platform 16 is arc-shaped with the same curvature as the drum brake pad. An upwardly extending storage baffle 17 is fixed on the front side of the top surface of the storage platform 16. A horizontally arranged feeding cylinder 18 is fixed on the side of the frame 1 corresponding to the storage platform 16 away from the punching seat 3. A U-shaped pusher block 19 is fixed on the telescopic rod of the feeding cylinder 18. The thickness of the pusher block 19 is the same as the thickness of the drum brake pad, and the length of the pusher block 19 is greater than or equal to the width of the drum brake pad.

[0038] The drilling mechanism includes a fixed base 20 fixed on a frame 1. Two slides 21 are laterally slidably connected to the fixed base 20. A first linear module 22 for driving the slide 21 to slide laterally relative to the fixed base 20 is connected between each slide 21 and the fixed base 20. A drilling table 23 perpendicular to the top surface of the drilling base 3 is slidably connected to each slide 21. A second linear module 24 for driving the drilling table 23 to slide relative to the slide 21 is connected between the drilling table 23 and its corresponding slide 21. A drilling machine 25 perpendicular to the top surface of the drilling base 3 is fixedly connected to each drilling table 23.

[0039] The polishing mechanism includes a cross slide 26 fixed horizontally on the frame 1, a drive motor 27 fixedly connected to the cross slide 26, a third rotating seat 28 disposed between the drive motor 27 and the polishing seat 9, a polishing roller 29 horizontally rotatably connected to the third rotating seat 28, and the polishing roller 29 and the drive motor 27 being connected by a transmission belt 30; a protective cover 31 covering the polishing roller 29 is fixed on the third rotating seat 28, and an opening 32 is provided on the side of the protective cover 31 near the polishing seat 9.

[0040] The feeding mechanism includes a slider 33 slidably connected to the feeding frame 15. A reciprocating drive mechanism fixed to the feeding frame 15 is connected to the slider 33. A lever 34 extending downward to the top surface of the transition seat 12 is rotatably connected to the slider 33 near the drilling seat 3. One side of the top of the lever 34 is in close contact with the side of the slider 33. A clearance groove 35 is provided on the slider 33 below the rotating part of the lever 34. When the reciprocating drive mechanism drives the slider 33 to move towards the grinding seat 9, the top of the lever 34 is limited by the slider 33 and cannot rotate. The lever 34 can push the drum. When the brake pad moves, the reciprocating drive mechanism drives the slider 33 to move towards the transition seat 12. After the bottom end of the lever 34 is subjected to force, it can rotate into the relief groove 35. The lever 34 cannot push the drum brake pad to move. The reciprocating drive mechanism includes a reciprocating drive motor 36 fixed at one end of the pusher frame 15. A drive gear 37 is fixed on the output shaft of the reciprocating drive motor 36. A driven gear 38 is rotatably connected to the other end of the pusher frame 15 on one side of the drive gear 37. A toothed belt 39 is sleeved between the driven gear 38 and the drive gear 37. The toothed belt 39 is fixedly connected to the slider 33.

[0041] The frame 1 is provided with a feeding port 40 at the position directly below the grinding seat 9. An inclined guide plate 41 is connected to the side of the feeding port 40 near the grinding mechanism. A roller conveyor belt 42 is connected to the bottom of the frame 1 corresponding to the feeding port 40 and is inclined downward. The roller conveyor belt 42 is V-shaped.

[0042] Working principle: The operator stacks the drum brake pads on the storage platform 16 of the frame 1, and makes the front sides of all the drum brake pads press against the storage baffle 17; then, the feeding cylinder 18 extends and pushes the bottom drum brake pad of the storage platform 16 to the top surface of the punching seat 3 by the push block 19 connected to the end of its telescopic rod (the spring steel band 6 on the top surface of the punching seat 3 has a certain rigidity. When the spring steel band 6 is not tensioned, it can be placed above the top surface of the punching seat 3 and will not obstruct the drum brake pad when pushing the drum brake pad from the storage platform 16 to the punching seat 3); during the pushing process, since the push block 19 has the same thickness as the drum brake pad, the push block 19 can lift the remaining drum brake pads on the storage platform 16. After the feeding cylinder 18 retracts and resets, the remaining drum brake pads move downward under the action of gravity and press against the top surface of the storage platform 16.

[0043] Next, the tensioning cylinder 7 on the drilling base 3 tightens the spring steel band 6 in the middle of the first retaining edge 5, causing the spring steel band 6 to press the drum brake pad against the surface of the drilling base 3; subsequently, the first rotating motor 4 on the first rotating base 2 drives the drilling base 3 to rotate relative to the first rotating base 2 towards the first retaining edge 5, so that both drilling machines 25 are perpendicular to the drilling position on the drum brake pad; then, the two horizontally arranged first linear modules 22 on the fixed base 20 drive the two slides 21 to slide horizontally relative to the fixed base 20, adjusting... The two drilling machines 25 are positioned at the lateral drilling positions on the drum brake pads. Then, the second linear module 24 on the slide table 21, which is vertically facing the top surface of the drilling seat 3, drives the drilling table 23 to move toward the drilling seat 3, so that the drilling machines 25 on the two drilling tables 23 can perform drilling operations on the drum brake pads. After drilling is completed, the drilling table 23 moves up and resets, and then the drilling seat 3 is controlled to rotate toward the first stop 5 to adjust the drilling position on the drum brake pads circumferentially, and then the drilling operation continues until all drilling operations are completed.

[0044] Next, rotate the punching seat 3 until it is horizontally aligned with the transition seat 12, and then control the extension of the pusher cylinder 14 to push the drum brake pad on the punching seat 3 onto the transition seat 12. The transition seat 12 has a third stop 13 connected to its front side, which can prevent the drum brake pad from sliding forward under the action of gravity.

[0045] Next, the reciprocating drive motor 36 on the pusher frame 15 drives the drive gear 37 to rotate, and causes the toothed belt 39 and the driven gear 38 to rotate synchronously, thereby driving the slider 33 fixed on the toothed belt 39 to move from the side of the transition seat 12 near the drilling seat 3 to the side of the grinding seat 9 near the transition seat 12. During this process, the bottom end of the lever 34 rotatably connected to the slider 33 can contact the side of the drum brake pad. Since the lever 34 is rotatably connected to the side of the slider 33 near the drilling seat 3, and the top end of the lever 34 is in contact with the side of the slider 33, this allows the lever 34 to push the drum brake pad to move after the bottom end of the lever 34 contacts the drum brake pad, and push the drum brake pad from the transition seat 12 to the grinding seat 9. When the reciprocating drive motor 36 rotates in the opposite direction to drive the lever 34 to reset, if the lever 34 can contact the drum brake pad, the bottom end of the lever 34 will rotate into the relief groove 35 of the slider 33, so that the lever 34 cannot push the drum brake pad.

[0046] Next, the clamping cylinder 44 on the grinding base 9 drives the clamping block 43 at the rear side of the grinding base 9 to position and clamp the drum brake pad on the second stop 11 at the front side of the grinding base 9; then, the drive motor 27 drives the grinding roller 29 on the third rotating seat 28 to rotate via the transmission belt 30. Then, the cross slide 26 drives the drive motor 27 and the grinding roller 29 to move laterally in sync, thereby adjusting the lateral grinding position of the grinding roller 29 and the drum brake pad on the grinding base 9; then the cross slide... 26. The longitudinal movement controls the grinding roller 29 to approach and grind the drum brake pads on the grinding seat 9. Since the front side of the grinding seat 9 is connected to the second guard 11, during the grinding process, the downward rotating grinding roller 29 can only make the drum brake pads fit closer to the second guard 11 and keep the drum brake pads stable. As the second rotating motor 10 drives the grinding seat 9 to rotate relative to the second rotating seat 8 towards the second guard 11, the top surface of the drum brake pads on the grinding seat 9 can be ground by the grinding roller 29.

[0047] After grinding is completed, the cross slide 26 drives the grinding roller 29 to retract longitudinally to separate it from the drum brake pad; then, the grinding seat 9 continues to rotate in the direction of the second guard 11 until the drum brake pad slides down under the action of gravity. After sliding down, the drum brake pad can be guided by the guide plate 41 to fall from the discharge port 40 onto the inclined downward V-shaped roller conveyor belt 42, and slide down along the roller conveyor belt 42 under its own gravity to complete the discharge.

Claims

1. A drilling and grinding combination machine for processing drum brake pads, comprising a frame (1); characterized in that: The two sides of the frame (1) are respectively connected to a drilling mechanism and a grinding mechanism, and a transition mechanism connected to the frame (1) is provided between the drilling mechanism and the grinding mechanism. The drilling mechanism includes a first rotating seat (2) fixed on the frame (1), a drilling seat (3) is horizontally rotatably connected to the first rotating seat (2), and a first rotating motor (4) fixed on the first rotating seat (2) is connected to one end of the rotating shaft of the drilling seat (3); the top surface of the drilling seat (3) is arc-shaped with the same curvature as the drum brake pad, and a first stop (5) is fixed on the front side of the top surface of the drilling seat (3); a spring steel strip (6) is horizontally arranged above the middle of the drilling seat (3), the front end of the spring steel strip (6) is fixed in the middle of the first stop (5), and the rear end of the spring steel strip (6) is connected to a tensioning cylinder (7) fixed on the drilling seat (3); a drilling mechanism is connected to the front side of the drilling seat (3) on the frame (1) and is perpendicular to the top surface of the drilling seat (3); The grinding mechanism includes a second rotating seat (8) fixed on the frame (1), a grinding seat (9) is horizontally rotatably connected to the second rotating seat (8), and a second rotating motor (10) fixed on the second rotating seat (8) is connected to one end of the rotating shaft of the grinding seat (9); the top surface of the grinding seat (9) is arc-shaped with the same curvature as the drum brake pad, a second stop (11) is fixed on the front side of the top surface of the grinding seat (9), a clamping block (43) is provided on the rear side of the top surface of the grinding seat (9), a clamping cylinder (44) for driving the clamping block (43) to approach or move away from the grinding seat (9) is connected between the clamping block (43) and the grinding seat (9), and the height of the clamping block (43) and the second stop (11) is less than or equal to the thickness of the drum brake pad; the grinding mechanism is connected to the front side of the grinding seat (9) on the frame (1); The transition mechanism includes a transition seat (12) fixed on the frame (1). The top surface of the transition seat (12) is arc-shaped with the same curvature as the drum brake pad. A third stop (13) is fixed on the front side of the top surface of the transition seat (12). A pusher cylinder (14) is set horizontally and laterally toward the transition seat (12) on one side of the frame (1) corresponding to the drilling seat (3). A pusher frame (15) is connected on the frame (1) and spans the transition seat (12) and the grinding seat (9). A pusher mechanism for pushing the drum brake pad from the transition seat (12) to the grinding seat (9) is connected on the pusher frame (15).

2. The drilling and grinding combination machine for processing drum brake pads according to claim 1, characterized in that: A storage platform (16) is fixed on the side of the frame (1) away from the transition seat (12) corresponding to the punching seat (3). The top surface of the storage platform (16) is the same height as the punching seat (3). The distance between the storage platform (16) and the punching seat (3) is less than half the width of the drum brake pad. The top surface of the storage platform (16) is set in an arc shape with the same curvature as the drum brake pad. An upwardly extending storage baffle (17) is fixed on the front side of the top surface of the storage platform (16). A horizontally arranged feeding cylinder (18) is fixed on the side of the frame (1) away from the punching seat (3) corresponding to the storage platform (16). A U-shaped pusher block (19) is fixed on the telescopic rod of the feeding cylinder (18). The thickness of the pusher block (19) is the same as the thickness of the drum brake pad. The length of the pusher block (19) is greater than or equal to the width of the drum brake pad.

3. The drilling and grinding combination machine for processing drum brake pads according to claim 1, characterized in that: The drilling mechanism includes a fixed base (20) fixed on a frame (1), two slides (21) slidably connected to the fixed base (20), and a first linear module (22) for driving the slide (21) to slide laterally relative to the fixed base (20) connected between each slide (21) and the fixed base (20); a drilling table (23) vertically facing the top surface of the drilling base (3) is slidably connected to each slide (21), and a second linear module (24) for driving the drilling table (23) to slide relative to the slide (21) is connected between the drilling table (23) and its corresponding slide (21); a drilling machine (25) vertically facing the top surface of the drilling base (3) is fixedly connected to each drilling table (23).

4. The drilling and grinding combination machine for processing drum brake pads according to claim 1, characterized in that: The polishing mechanism includes a cross slide (26) fixed horizontally on the frame (1), a drive motor (27) fixedly connected to the cross slide (26), a third rotating seat (28) provided between the drive motor (27) and the polishing seat (9), a polishing roller (29) horizontally rotatably connected to the third rotating seat (28), and the polishing roller (29) and the drive motor (27) are connected by a transmission belt (30).

5. The drilling and grinding combination machine for processing drum brake pads according to claim 4, characterized in that: The No. 3 rotating seat (28) is fixed with a protective cover (31) covering the grinding roller (29), and the protective cover (31) has an opening (32) on the side near the grinding seat (9).

6. The drilling and grinding combination machine for processing drum brake pads according to claim 1, characterized in that: The pushing mechanism includes a slider (33) slidably connected to the pushing frame (15). A reciprocating drive mechanism fixed to the pushing frame (15) is connected to the slider (33). A lever (34) extending downward to the top surface of the transition seat (12) is rotatably connected to the side of the slider (33) near the drilling seat (3). One side of the top of the lever (34) is in close contact with the side of the slider (33). A clearance groove (35) is provided on the slider (33) below the rotating part of the lever (34). When the reciprocating drive mechanism drives the slider (33) to move towards the grinding seat (9), the top of the lever (34) is limited by the slider (33) and cannot rotate. The lever (34) can push the drum brake pad to move. When the reciprocating drive mechanism drives the slider (33) to move towards the transition seat (12), the bottom of the lever (34) can rotate into the clearance groove (35) after being forceped. The lever (34) cannot push the drum brake pad to move.

7. A drilling and grinding combination machine for processing drum brake pads according to claim 6, characterized in that: The reciprocating drive mechanism includes a reciprocating drive motor (36) fixed at one end of the pusher frame (15), a drive gear (37) fixed on the output shaft of the reciprocating drive motor (36), a driven gear (38) rotatably connected to the other end of the pusher frame (15) on one side of the drive gear (37), a toothed belt (39) sleeved between the driven gear (38) and the drive gear (37), and the toothed belt (39) is fixedly connected to the slider (33).

8. The drilling and grinding combination machine for processing drum brake pads according to claim 1, characterized in that: The frame (1) is provided with a feeding port (40) located directly below the corresponding grinding seat (9), and an inclined guide plate (41) is connected to the side of the feeding port (40) near the grinding mechanism.

9. A drilling and grinding combination machine for processing drum brake pads according to claim 8, characterized in that: The frame (1) is connected to a downwardly inclined roller conveyor belt (42) at the bottom of the feed port (40), and the roller conveyor belt (42) is V-shaped.

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