A double-sided drilling device for a motorcycle wheel hub

Abstract

The application discloses a double-sided drilling device for a motorcycle wheel hub, characterized by comprising a material taking mechanism and a machining mechanism below the material taking mechanism, the material taking mechanism comprises a support, a lead screw motor one is arranged on the support, the lead screw motor one is drivingly connected with a lead screw one, a lead screw sliding block one is arranged on the lead screw one, a moving plate is connected with the lower part of the lead screw sliding block one, a hydraulic cylinder one is arranged on the upper part of the moving plate, the lower end of the piston rod of the hydraulic cylinder one penetrates through the moving plate and is connected with a supporting plate, lead screw seats are arranged on the front and back sides of the supporting plate, a lead screw two is rotatably arranged on the lead screw seat, a driven bevel gear is connected with the inner end of the lead screw two, a lead screw motor two and a reverser are arranged on the side of the supporting plate, and the motor shaft of the lead screw motor two is connected with the input end of the reverser. The application can bidirectionally drill the wheel hub, thereby reducing the overall drilling time and improving the processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of wheel hub processing equipment, in particular to a double-sided drilling device for a motorcycle wheel hub. Background Art

[0002] During the machining process, aluminum alloy wheels require bolt holes to be drilled. These holes are the through-holes that secure the wheel to the axle when assembled on the vehicle. Existing drilling equipment requires the wheel hub to be placed flat on a machining table, and can only drill holes in the upper portion of the hub. For wheels with a large number of bolt holes and a high machining volume, drilling can be time-consuming. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a double-sided drilling device for a motorcycle wheel hub.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A double-sided drilling device for a motorcycle wheel hub comprises a feeding mechanism and a processing mechanism located below the feeding mechanism, the feeding mechanism comprises a bracket, a screw motor 1 is provided on the bracket, the screw motor 1 is connected to a screw 1 for driving, a screw slider 1 is provided on the screw slider, a lower part of the screw slider is connected to a movable plate, a hydraulic cylinder 1 is provided on the upper part of the movable plate, the lower end of the piston rod of the hydraulic cylinder 1 passes through the movable plate and is connected to a support plate, screw seats are provided on the front and rear sides of the support plate, a screw 2 is rotatably provided on the screw seat, the inner end of the screw 2 is connected to a driven bevel gear, a screw motor 2 and a commutator are provided on the side of the support plate, and the motor shaft of the screw motor 2 is connected to the output of the commutator. The input end is connected, the output end of the commutator is connected with the active bevel gear, the active bevel gear is meshed with the two driven bevel gears, a screw slider 2 is provided on the screw rod 2, the lower part of the screw slider 2 is connected with a splint, a fixed end face gear is provided on the inner side of the splint, a rotating rod is rotatably provided on the splint, the inner end of the rotating rod is connected with a movable end face gear, the inner side of the movable end face gear is connected with a fixed column, a sleeve is provided on the outer side of the splint, the rotating rod is rotatably provided in the sleeve, the part of the rotating rod located in the sleeve is connected with a rotating disk, push rings are provided at positions on both sides of the rotating disk in the sleeve, a spring is connected between the push ring and the side wall of the sleeve, and a ball is provided between the push ring and the rotating disk.

[0006] The processing mechanism includes a processing table, a groove is opened in the middle position of the processing table, a driving roller is arranged to rotate in the groove, the driving roller is coaxially connected to the driven pulley, a servo motor is arranged inside the groove, the servo motor drives the active pulley, and a transmission belt is connected between the active pulley and the driven pulley. Limit plates are provided at the front and rear sides of the groove on the processing table, and a drilling mechanism is provided on the front and rear sides of the processing table respectively.

[0007] Preferably, the drilling mechanism includes a guide rail, a movable block is slidably arranged on the guide rail, the upper part of the movable block is connected to a support column, the right side of the support column is connected to a support arm, a drilling motor is arranged on the support arm, the drilling motor drive is connected to a drill bit, and also includes a driving mechanism for driving the two drilling mechanisms to move toward each other.

[0008] Preferably, the driving mechanism includes rack 1, rack 2 and a transmission gear. Rack 1 is connected to the movable block on the rear side, and rack 2 is connected to the movable block on the front side. A transmission gear is rotatably arranged on the processing table at the middle position between the two drilling mechanisms. Rack 1 and rack 2 are respectively located on the left and right sides of the transmission gear. Rack 1 and rack 2 are both engaged with the transmission gear. Hydraulic cylinder 2 is arranged on one of the guide rails, and the piston rod of hydraulic cylinder 2 is connected to the movable block.

[0009] Preferably, a guide rod is provided on the upper portion of the bracket, a slider is slidably provided on the guide rod, and the lower end of the slider is connected to the upper end of the movable plate.

[0010] Preferably, support rollers are provided on the processing table at the left and right sides of the groove.

[0011] The lifting mechanism comprises a lifting mechanism, and the lifting mechanism comprises a lifting mechanism, and the lifting mechanism comprises a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism

[0012] Preferably, a limiting seat 1 is provided on an outer side of an upper portion of the conveying seat 1, and a plurality of limiting rollers 1 are rotatably provided inside the limiting seat 1, and the limiting rollers 1 are vertically arranged.

[0013] Preferably, a limiting member is provided on the right side of the upper portion of the second conveying seat, located behind the flip plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: changing the wheel hub from horizontal placement to vertical placement allows the drilling mechanism to drill holes on both sides of the wheel hub at the same time, thereby accelerating the overall drilling speed and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the assembly of the processing mechanism and the material taking mechanism in the present invention;

[0017] Figure 3 A bottom view of the support plate of the present invention;

[0018] Figure 4 It is a cross-sectional view of the splint in the present invention;

[0019] Figure 5 for Figure 4 A magnified schematic diagram of point A in the middle;

[0020] Figure 6 It is a structural schematic diagram of the processing mechanism in the present invention;

[0021] Figure 7 is a cross-sectional view of the processing mechanism of the present invention;

[0022] Figure 8 It is a structural schematic diagram of the conveying mechanism in the present invention;

[0023] Figure 9 A cross-sectional view of one portion of the conveying seat in the present invention;

[0024] Figure 10 It is a cross-sectional view of the turning plate in the present invention;

[0025] Figure 11 This is a schematic diagram of the working state of the flip plate in the present invention;

[0026] Figure 12 It is a cross-sectional view of the second conveying seat in the present invention;

[0027] Figure 13 It is a structural schematic diagram of the load-bearing plate in the present invention.

[0028] 1. Conveying mechanism; 2. Processing mechanism; 3. Retrieving mechanism; 4. Support; 5. Screw 1; 6. Screw motor 1; 7. Screw slider 1; 8. Guide rod; 9. Slide block; 10. Moving plate; 11. Hydraulic cylinder 1; 12. Support plate; 13. Screw seat; 14. Screw 2; 15. Driven bevel gear; 16. Screw motor 2; 17. Commutator; 18. Active bevel gear; 19. Clamp; 20. Screw slider 2; 21. Fixed end gear; 22. Rotating rod; 23. Movable end gear; 24. Fixed column; 25. Rotating disk; 26. Push ring; 27. Ball bearing; 28. Limiting groove; 29. ​​Limiting block; 30. Spring; 31. Sleeve; 32. Processing table; 33. Groove; 34. Driving roller; 35. Limiting plate; 36. Support roller; 37. Servo motor; 38. 8. Driving pulley; 39. Driven pulley; 40. Transmission belt; 41. Movable block; 42. Support column; 43. Support arm; 44. Drilling motor; 45. Drill bit; 46. Drilling mechanism; 47. Rack 1; 48. Rack 2; 49. Transmission gear; 50. Hydraulic cylinder 2; 51. Support seat; 52. Conveyor seat 1; 53. Conveyor roller 1; 54. Limit seat 1; 55. Limit roller 1; 56 , conveying seat two; 57, conveying roller two; 58, limit piece; 59, mounting block; 60, flip plate; 61, limit bar; 62, push block; 63, hinge block; 64, electric push rod; 65, limit seat two; 66, limit roller two; 67, hydraulic cylinder three; 68, hydraulic cylinder four; 69, load-bearing plate; 70, unloading ramp; 71, baffle one; 72, baffle bar; 73, baffle two; 74, guide rail. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-13 The embodiments of the present invention are described in detail.

[0030] A double-sided drilling device for a motorcycle wheel hub includes a feeding mechanism 3 and a processing mechanism 2 located below the feeding mechanism 3. The feeding mechanism 3 includes a bracket 4, on which a screw motor 6 is provided, which is driven by a screw motor 6 and connected to a screw 5. A screw slider 7 is provided on the screw slider 5, and a movable plate 10 is connected to the lower part of the screw slider 7. A hydraulic cylinder 11 is provided on the upper part of the movable plate 10. The lower end of the piston rod of the hydraulic cylinder 11 passes through the movable plate 10 and is connected to the support plate 1. 2. The front and rear sides of the support plate 12 are provided with a screw seat 13, and a screw rod 14 is rotatably provided on the screw seat 13. The inner end of the screw rod 14 is connected to the driven bevel gear 15. The side of the support plate 12 is provided with a screw motor 16 and a commutator 17. The motor shaft of the screw motor 16 is connected to the input end of the commutator 17, and the output end of the commutator 17 is connected to the driving bevel gear 18. The driving bevel gear 18 is meshed with the two driven bevel gears 15. A screw rod 14 is provided on the screw rod. Rod slider 20, the lower part of screw slider 20 is connected with a splint 19, a fixed end face gear 21 is provided on the inner side of the splint 19, a rotating rod 22 is provided on the splint 19, the inner end of the rotating rod 22 is connected to a movable end face gear 23, and a fixed column 24 is connected to the inner side of the movable end face gear 23. The tooth surfaces of the fixed end face gear 21 and the movable end face gear 23 are arranged relative to each other, and the teeth on the movable end face gear 23 and the fixed end face gear 21 can engage with each other. The sleeve 31, the rotating rod 22 is rotatably set in the sleeve 31, the part of the rotating rod 22 located in the sleeve 31 is connected to the rotating disk 25, and push rings 26 are provided at positions on both sides of the rotating disk 25 in the sleeve 31. A spring 30 is connected between the push ring 26 and the side wall of the sleeve 31, and a ball 27 is provided between the push ring 26 and the rotating disk 25. A limiting groove 28 is provided on the inner side of the sleeve 31, and a limiting block 29 is connected to the push ring 26, and the limiting block 29 is set in the limiting groove 28.

[0031] The processing mechanism 2 includes a processing table 32, a groove 33 is opened in the middle position of the processing table 32, a driving roller 34 is rotatably arranged in the groove 33, and the driving roller 34 is coaxially connected to the driven pulley 39. A servo motor 37 is arranged inside the groove 33, and the servo motor 37 drives the driving pulley 38, and a transmission belt 40 is connected between the driving pulley 38 and the driven pulley 39. Limit plates 35 are provided on the processing table 32 at the front and rear sides of the groove 33, and a drilling mechanism 46 is provided on the front and rear sides of the processing table 32. The processing table 32 is provided with a driving mechanism that can drive the two drilling mechanisms 46 to move toward each other.

[0032] Screw motor 2 16 drives active bevel gear 18 through commutator 17. Active bevel gear 18 drives the driven bevel gears 15 on both sides to rotate. The driven bevel gears 15 then drive their respective screws 2 14 to rotate, causing the two clamping plates 19 to move toward each other. The fixed column 24 is inserted into the bearing of the wheel hub, while the movable end face gear 23 abuts the hub of the wheel hub. As the two clamping plates 19 continue to move closer, the movable end face gear 23 is squeezed outward, causing it to abut against the fixed end face gear 21. The tooth surfaces of the movable end face gear 23 and the fixed end face gear 21 engage with each other. At this time, the movable end face gear 23 is fixed relative to the fixed end face gear 21 and cannot rotate. After the wheel hub is clamped and fixed by the two clamping plates 19, the screw motor 6 drives the screw 5 to rotate, and drives the movable plate 10 to move along the screw 5 through the screw slider 7, thereby driving the support plate 12 to move, and transporting the wheel hub to the processing mechanism 2. The hydraulic cylinder 11 controls the extension of its piston rod to drive the support plate 12 to move downward, so that the wheel hub falls on the driving roller 34.

[0033] The drive mechanism drives the two drilling mechanisms 46 to move synchronously toward the wheel hub, simultaneously drilling holes at both ends of the wheel rim, thereby increasing the overall drilling speed. After drilling one hole, the drive mechanism drives the two drilling mechanisms 46 away from the wheel hub. Screw motor 2 16 then rotates the driving bevel gear 18, causing the two clamping plates 19 to move outward. Because the fixed post 24 is inserted into the axial hole of the wheel hub, and the springs 30 on both sides push the rotating disk 25 back into place, the movement of the clamping plates 19 first drives the fixed end gear 21 outward, separating the fixed end gear 21 from the movable end gear 23. At this point, the tooth surfaces of the movable end gear 23 and the fixed end gear 21 disengage, allowing the movable end gear 23 to rotate normally without being fixed by the fixed end gear 21. The servo motor 37 drives the driving pulley 38 to rotate. The driving pulley 38 then drives the drive roller 34 via the transmission belt 40 and the driven pulley 39. The drive roller 34 then rotates the upper wheel hub a certain angle. Clamping plate 19 moves inwards again to clamp the wheel hub, thereby proceeding with the next round of drilling process. Proceed accordingly and complete all drilling operations.

[0034] The drilling mechanism 46 includes a guide rail 74, on which a movable block 41 is slidably mounted. A support column 42 is connected to the upper portion of the movable block 41. A support arm 43 is connected to the right side of the support column 42. A drilling motor 44 is mounted on the support arm 43, and the drilling motor 44 drives a drill bit 45. The driving mechanism includes a rack 1 47, a rack 2 48, and a transmission gear 49. Rack 1 47 is connected to the rear movable block 41, and rack 2 48 is connected to the front movable block 41. A transmission gear 49 is rotatably mounted on the processing table 32, located between the two drilling mechanisms 46. Rack 1 47 and rack 2 48 are located on the left and right sides of the transmission gear 49, respectively. Rack 1 47 and rack 2 48 are both engaged with the transmission gear 49. A hydraulic cylinder 2 50 is mounted on one of the guide rails 74, and the piston rod of the hydraulic cylinder 2 50 is connected to the movable block 41.

[0035] Hydraulic cylinder 2 50 controls its piston rod to retract, driving the front movable block 41 inward on the guide rail 74. At this time, rack 2 48 drives transmission gear 49 to rotate, which in turn drives rack 1 47 to move, thereby driving the rear movable block 41 inward on baffle 1 71, thereby controlling the two drilling mechanisms 46 to move toward each other. The drilling motor 44 drives the drill bit 45 to rotate, completing the drilling operation on the wheel hub.

[0036] The bracket 4 top is provided with a guide rod 8, and a slider 9 is slidably provided on the guide rod 8. The lower end of the slider 9 is connected with the upper end of the mobile plate 10. The sliding of the mobile plate 10 is guided by the cooperation of the slider 9 and the guide rod 8.

[0037] Support rollers 36 are provided on the processing table 32 at the left and right sides of the groove 33 , and the support rollers 36 on both sides are used to support the wheel hub.

[0038] It also includes a conveying mechanism 1, which needs to adjust the horizontal hub to a vertical hub so that the material-taking mechanism 3 can grab it and take it to the processing mechanism 2 for processing.

[0039] The conveying mechanism 1 includes a support seat 51, and a conveying seat 52 is provided on both sides of the upper left and right sides of the support seat 51. A plurality of conveying rollers 53 are provided in the conveying seat 52. A conveying seat 2 56 is provided on the upper part of the support seat 51, and a plurality of conveying rollers 57 are provided in the conveying seat 2 56. A limiting member 58 is provided on the left side of the upper part of the conveying seat 2 56. The limiting member 58 includes a limiting seat 2 65 connected to the conveying seat 2 56. The upper and lower parts of the inner side of the limiting seat 2 65 are rotatably provided with a limiting roller 2 66. The limiting roller 2 66 is vertically arranged. Two mounting blocks 59 are provided on the right side of the conveying seat 2 56. A turning member 58 is rotatably provided between the two mounting blocks 59. The rotating plate 60 and the flip plate 60 are internally provided with a hydraulic cylinder 4 68, the piston rod of the hydraulic cylinder 4 68 is connected to a push block 62, a hinge block 63 is provided at the lower part of the flip plate 60, an electric push rod 64 is provided between the support seat 51 and the hinge block 63, the two ends of the electric push rod 64 are hinged to the support seat 51 and the hinge block 63 respectively, a supporting plate 69 is provided on the rear side of the conveying seat 2 56, a baffle 1 71 is connected to the rear side of the supporting plate 69, a material unloading ramp 70 is provided between the supporting plate 69 and the conveying seat 2 56, a baffle 2 73 is provided on the supporting plate 69 at the left and right sides of the material unloading ramp 70, and a baffle bar 72 is provided on the supporting plate 69 at the rear of the baffle 2 73.

[0040] First, the horizontal wheel hub is placed on the conveying seat 1 52, and the conveying roller 1 53 inside the conveying seat 1 52 drives the wheel hub to move backward. When the wheel hub reaches the flip plate 60, the electric push rod 64 extends to drive the flip plate 60 to flip upward. The flip plate 60 drives the wheel hub to flip, and the limit member 58 located on the upper left side of the conveying seat 2 56 can block the wheel hub so that the wheel hub will not flip out from the conveying seat 2 56. After the wheel hub is flipped to a vertical state, the hydraulic cylinder 4 68 controls its piston rod to extend so that the push block 62 moves outward. The push block 62 pushes the wheel hub toward the limit member 58 so that the wheel hub rests on the limit roller 2 66 of the limit member 58. The wheel hub is then transported by the conveying roller 2 57 on the conveying seat 2 56 so that the wheel hub reaches the end of the conveying seat 2 56. After leaving the second conveyor seat 56, the wheel hub rolls down the unloading ramp 70 onto the support plate 69, where it is stopped by the first baffle 71. As the wheel hub rolls down the unloading ramp 70, it is restrained by the second baffles 73 on either side, preventing it from falling off the unloading ramp 70. After reaching the support plate 69, the wheel hub is picked up by the pick-up mechanism 3 and transferred to the processing mechanism 2.

[0041] A limiting seat 54 is provided on the outer side of the upper part of the conveying seat 52, and a plurality of limiting rollers 55 are rotatably provided in the limiting seat 54. The limiting rollers 55 are vertically arranged, and the conveying wheel hub on the conveying seat 52 is limited by the limiting seats 54 on both sides so that it can reach the flip plate 60 at the correct position.

[0042] A limiting member 58 is provided on the upper right side of the second conveying seat 56 and behind the flip plate 60 , and the limiting members 58 on both sides are used to guide and limit the wheel hub in the vertical state.

[0043] To prevent the wheel hub from falling off the flip plate 60 during flipping, limit bars 61 are installed on the flip plate 60, front and rear of the push block 62. A third hydraulic cylinder 67 is installed inside the flip plate 60, below the limit bars 61. The piston rod of the third hydraulic cylinder 67 is connected to the lower portion of the limit bar 61. When the flip plate 60 flips the wheel hub, the third hydraulic cylinder 67 controls its piston rod to extend, driving the limit bars 61 to extend from the flip plate 60. The limit bars 61 are located on the front and rear sides of the wheel hub to limit the wheel hub.

[0044] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A double-sided drilling device for a motorcycle wheel hub, characterized in that: The invention comprises a feeding mechanism (3) and a processing mechanism (2) located below the feeding mechanism (3). The feeding mechanism (3) comprises a bracket (4). A screw motor (6) is provided on the bracket (4). The screw motor (6) is driven and connected to a screw rod (5). A screw slider (7) is provided on the screw rod (5). The lower part of the screw slider (7) is connected to a moving plate (10). A hydraulic cylinder (11) is provided on the upper part of the moving plate (10). The lower end of the piston rod of the hydraulic cylinder (11) passes through the moving plate (10) and is connected to a support plate (12). The front and rear sides of the support plate (12) are both provided with screw seats (13). A screw rod (14) is rotatably provided on the screw seat (13). The inner end of the screw rod (14) is connected to a driven bevel gear (15). The side of the support plate (12) is provided with a screw motor 2 (16) and a commutator (17), the motor shaft of the screw motor 2 (16) is connected to the input end of the commutator (17), the output end of the commutator (17) is connected to the active bevel gear (18), the active bevel gear (18) and the two driven bevel gears (15) are meshed, the screw slider 2 (20) is provided on the screw rod 2 (14), the lower part of the screw slider 2 (20) is connected to the clamping plate (19), the inner side of the clamping plate (19) is provided with a fixed end face gear (21), the clamping plate (19) is rotatably provided with a rotating rod (22), the inner end of the rotating rod (22) is connected to the movable end face gear (23), the inner side of the movable end face gear (23) is connected to the fixed column (24), the outer side of the clamping plate (19) is provided with a screw slider 2 (20), the lower part of the screw slider 2 (20) is connected to the clamping plate (19), the inner side of the clamping plate (19) is provided with a fixed end face gear (21), the inner side of the clamping plate (19) is ... A sleeve (31) is provided on the side, a rotating rod (22) is rotatably provided in the sleeve (31), a portion of the rotating rod (22) located in the sleeve (31) is connected to a rotating disk (25), a push ring (26) is provided at positions on both sides of the rotating disk (25) in the sleeve (31), a spring (30) is connected between the push ring (26) and the side wall of the sleeve (31), and a ball (27) is provided between the push ring (26) and the rotating disk (25); the processing mechanism (2) includes a processing table (32), a groove (33) is provided in the middle position of the processing table (32), a driving roller (34) is rotatably provided in the groove (33), the driving roller (34) is coaxially connected to a driven pulley (39), and a servo motor (37) is provided inside the groove (33). The servo motor (37) is driven and connected with a driving pulley (38), and a transmission belt (40) is connected between the driving pulley (38) and the driven pulley (39). A limit plate (35) is provided on the processing table (32) at the front and rear sides of the groove (33). A drilling mechanism (46) is provided on the front and rear sides of the processing table (32). The fixed column (24) can be inserted into the bearing of the wheel hub. When drilling, the clamping plate (19) clamps the wheel hub, and the tooth surfaces on the movable end face gear (23) and the fixed end face gear (21) are engaged with each other. After completing a hole, the two clamping plates (19) move outward, and the tooth surfaces of the movable end face gear (23) and the fixed end face gear (21) are separated, and the driving roller (34) drives the upper wheel hub to rotate a certain angle.

2. The double-sided drilling device for a motorcycle wheel hub according to claim 1, characterized in that: The drilling mechanism (46) comprises a guide rail (74), a movable block (41) is slidably arranged on the guide rail (74), the upper part of the movable block (41) is connected to a support column (42), the right side of the support column (42) is connected to a support arm (43), a drilling motor (44) is arranged on the support arm (43), and the drilling motor (44) is connected to a drill bit (45). The drilling motor (44) also includes a driving mechanism for driving the two drilling mechanisms (46) to move toward each other.

3. The double-sided drilling device for a motorcycle wheel hub according to claim 2, characterized in that: The driving mechanism includes a rack 1 (47), a rack 2 (48) and a transmission gear (49). The rear movable block (41) is connected to the rack 1 (47), and the front movable block (41) is connected to the rack 2 (48). A transmission gear (49) is rotatably provided on the processing table (32) at the middle position between the two drilling mechanisms (46). The rack 1 (47) and the rack 2 (48) are respectively located on the left and right sides of the transmission gear (49). The rack 1 (47) and the rack 2 (48) are both engaged with the transmission gear (49). A hydraulic cylinder 2 (50) is provided on one of the guide rails (74). The piston rod of the hydraulic cylinder 2 (50) is connected to the movable block (41).

4. The double-sided drilling device for a motorcycle wheel hub according to claim 1, characterized in that: A guide rod (8) is provided on the upper portion of the bracket (4), a slider (9) is slidably provided on the guide rod (8), and the lower end of the slider (9) is connected to the upper end of the movable plate (10).

5. The double-sided drilling device for a motorcycle wheel hub according to claim 1, characterized in that: Support rollers (36) are provided on the processing table (32) at positions on the left and right sides of the groove (33).

6. The double-sided drilling device for a motorcycle wheel hub according to claim 1, characterized in that: The conveying mechanism (1) further comprises a support seat (51), a conveying seat 1 (52) is provided on both the front and rear sides of the upper portion of the support seat (51), a plurality of conveying rollers 1 (53) are provided in the conveying seat 1 (52), a conveying seat 2 (56) is provided on the upper portion of the support seat (51) at the left side of the front conveying seat 1 (52), a plurality of conveying rollers 2 (57) are provided in the conveying seat 2 (56), a limiting member (58) is provided on the front side of the upper portion of the conveying seat 2 (56), the limiting member (58) comprises a limiting seat 2 (65) connected to the conveying seat 2 (56), the upper and lower parts of the inner side of the limiting seat 2 (65) are both rotatably provided with a limiting roller 2 (66), the limiting roller 2 (66) is vertically arranged, and the conveying seat 2 (56) is provided with a plurality of conveying rollers 2 (57) and a plurality of conveying rollers 2 (57) are provided in the conveying seat 2 (56). ) are provided at the rear of the conveying seat 2 (56), a flip plate (60) is rotatably provided between the two mounting blocks (59), a hydraulic cylinder 4 (68) is provided inside the flip plate (60), a push block (62) is connected to the piston rod of the hydraulic cylinder 4 (68), a hinge block (63) is provided at the lower part of the flip plate (60), an electric push rod (64) is provided between the support seat (51) and the hinge block (63), a bearing plate (69) is provided on the left side of the conveying seat 2 (56), a baffle 1 (71) is connected to the left side of the bearing plate (69), a material discharging ramp (70) is provided between the bearing plate (69) and the conveying seat 2 (56), and a baffle 2 (73) is provided on the bearing plate (69) at the front and rear sides of the material discharging ramp (70).

7. The double-sided drilling device for a motorcycle wheel hub according to claim 6, characterized in that: A limiting seat (54) is provided on the outer side of the upper part of the conveying seat (52), and a plurality of limiting rollers (55) are rotatably provided in the limiting seat (54), and the limiting rollers (55) are vertically provided.

8. The double-sided drilling device for a motorcycle wheel hub according to claim 6, characterized in that: A limiting member (58) is provided at the rear of the upper portion of the second conveying seat (56) and at a position on the left side of the turning plate (60).

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