Automobile transmission gear shaft hole machining and positioning device

Abstract

The utility model relates to an automobile transmission gear shaft hole machining positioning device which comprises an operation platform, a cantilever type support, a punching drill and a positioning assembly and is characterized in that the cantilever type support comprises a stand column, a lifting cylinder arranged on the top of the stand column, a driven gear arranged on the lower portion of the stand column and a horizontal cantilever rod arranged at the top end of a telescopic rod of the lifting cylinder; the lower end of the stand column is supported on one side of the operation platform through a bearing, the punching drill is arranged at the tail end of a long arm of the horizontal cantilever rod, a longitudinal linear module is fixed to the other side above the operation platform, an overturning motor is fixed to a sliding block of the longitudinal linear module, an annular supporting seat is fixed to the output end of the overturning motor, and the center line of the annular supporting seat is perpendicular to the horizontal plane. The positioning assembly comprises a plurality of clamping petals evenly arranged in the annular supporting base and clamping springs arranged between the clamping petals and the inner circumferential face of the annular supporting base, and the center line of the annular supporting base falls on the rotating path of the punching drill around the stand column. The device is convenient to operate, and the position precision of punching is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile gearbox production and processing, in particular to a positioning device for machining the gear shaft hole of an automobile gearbox. Background Art

[0002] When machining the gear shaft hole of an automobile gearbox, it usually needs to be positioned and clamped multiple times, which affects the drilling accuracy.

[0003] In order to overcome this defect, CN 220782959 U discloses a positioning device for machining the gear shaft hole of an automobile gearbox, which includes an operating table assembly, a first positioning assembly, a second positioning assembly and a machining assembly. The lower end of the operating table assembly is connected with the machining assembly, and multiple groups of the first positioning assembly and the second positioning assembly are connected to the upper end of the operating table assembly. The operating table assembly is composed of a rotating motor, a limiting protrusion, an operating table and a mounting sleeve. The first positioning assembly is composed of a first lifting cylinder, a first telescopic cylinder, a connecting plate and a first clamping block. The second positioning assembly is composed of a second lifting cylinder, a connecting seat, a rotating cylinder, a second telescopic cylinder and a second clamping block. The machining assembly is composed of a machining table, a third lifting cylinder, a mounting plate, a drilling bit, a sliding groove and a mounting groove. The whole automobile gearbox gear can be driven to rotate by the rotating motor and used in cooperation with the drilling bit, improving the drilling efficiency. During machining, the automobile gearbox gear is inserted into the mounting sleeve, and then the first clamping block and the second clamping block are used to clamp and position the periphery of the automobile gearbox gear, so that the automobile gearbox gear is kept stable. And during clamping, the relative positions of the first clamping block, the second clamping block and the automobile gearbox gear can be adjusted by the lifting of the first lifting cylinder and the second lifting cylinder to keep a relatively stable position for clamping, reducing deviation and wear during machining. And when it needs to be turned over, the first clamping block can be withdrawn, and then the second lifting cylinder drives the automobile gearbox gear to rise, so that the lower end of the automobile gearbox gear is separated from the mounting sleeve. Then the rotating cylinder drives the automobile gearbox gear to flip, and then the second lifting cylinder drives the automobile gearbox gear to descend, so that the lower end of the automobile gearbox gear is inserted into the mounting sleeve, and the first clamping block also resumes the clamping state, aiming to facilitate re-drilling.

[0004] However, there are still the following problems in use: 1. Multiple clamping blocks realize the clamping function by shrinking radially from all directions, but the multiple clamping blocks working under the action of their respective driving mechanisms may cause the offset of the gear shaft axis, which is not conducive to aligning with the drilling bit. 2. Too many lifting cylinders and telescopic cylinders are adopted, and they need to cooperate in lifting and telescoping, with a large operation difficulty. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a positioning device for machining the gear shaft hole of an automobile gearbox with reasonable structure and reliable use to solve the above problems, which is convenient to operate and significantly improves the position accuracy of drilling.

[0006] The technical solution of the utility model is as follows:

[0007] A positioning device for machining the gear shaft hole of an automobile gearbox, comprising an operation platform, a cantilever bracket, a drilling bit, and a positioning component. The technical key points are as follows: The cantilever bracket includes a column, a lifting cylinder provided at the top of the column, a driven gear provided at the lower part of the column, and a horizontal cantilever rod provided at the top end of the telescopic rod of the lifting cylinder. The lower end of the column is supported on one side of the operation platform by a bearing. The drilling bit is fixed at the end of the long arm of the horizontal cantilever rod. On the other side above the operation platform, a longitudinal linear module is fixed. A flipping motor is fixed on the slider of the longitudinal linear module. The output end of the flipping motor is fixed with an annular support seat. The center line of the annular support seat is perpendicular to the horizontal plane. The positioning component includes a plurality of clamping petals evenly arranged inside the annular support seat and a clamping spring arranged between the clamping petals and the inner peripheral surface of the annular support seat. The center line of the annular support seat falls on the path of the drilling bit rotating around the column.

[0008] For the above-mentioned positioning device for machining the gear shaft hole of an automobile gearbox, a positioning groove concentric with the annular support seat is provided on the upper surface of the operation platform.

[0009] For the above-mentioned positioning device for machining the gear shaft hole of an automobile gearbox, the clamping petal includes an arc-shaped clamping plate, an upper horizontal guide plate provided at the upper end of the arc-shaped clamping plate, and a lower horizontal guide plate provided at the lower end of the arc-shaped clamping plate. The upper horizontal guide plate and the lower horizontal guide plate jointly clamp the annular support seat. Guide columns corresponding to the clamping springs are provided on the inner peripheral surface of the annular support seat.

[0010] For the above-mentioned positioning device for machining the gear shaft hole of an automobile gearbox, a counterweight is provided at the end of the short arm of the horizontal cantilever rod to balance the weight of the drilling bit.

[0011] For the above-mentioned positioning device for machining the gear shaft hole of an automobile gearbox, a Z-shaped bracket is provided above the operation platform. A servo motor is fixed at the top of the Z-shaped bracket. A driving gear meshing with the driven gear is provided on the output shaft of the servo motor.

[0012] For the above-mentioned positioning device for machining the gear shaft hole of an automobile gearbox, an infrared emitter is provided on the lower surface of the horizontal cantilever rod. An infrared receiver cooperating with the infrared emitter is provided on the operation platform or a fixed object thereon to realize the positioning of the horizontal cantilever rod.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The outer peripheral surface of the gear is jointly clamped by each clamping petal in the annular support seat. Each clamping petal uses clamping springs with the same size and elastic properties to uniformly clamp the gear, and there will be no phenomenon that the axis line deviates from the vertical line, which is beneficial to the alignment of drilling and significantly improves the position accuracy of drilling.

[0015] 2. It is convenient to operate. Insert the gear between the clamping petals in the annular support seat to achieve clamping. Compared with the technical solution using more lifting cylinders and telescopic cylinders, the collaborative workload is greatly reduced, thus greatly reducing the operation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is Figure 1 a top view of the positioning component and peripheral components in

[0018] In the figure: 1. Counterweight, 2. Horizontal cantilever rod, 3. Drilling bit, 4. Lifting cylinder, 5. Infrared emitter, 6. Column, 7. Infrared receiver, 8. Gear, 9. Annular support seat, 10. Rotary motor, 11. Longitudinal linear module, 12. Clamping spring, 13. Guide post, 14. Arc-shaped clamping plate, 15. Upper horizontal guide plate, 16. Lower horizontal guide plate, 17. Z-shaped bracket, 18. Driving gear, 19. Positioning groove, 20. Driven gear, 21. Bearing, 22. Operating platform, 23. Servo motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be described in detail according to the accompanying drawings of the specification.

[0020] As Figure 1 , Figure 2 shown, the positioning device for machining the gear shaft hole of an automobile transmission includes an operating platform 22, a cantilever bracket, a drilling bit 3 and a positioning component.

[0021] Among them, the cantilever bracket includes a column 6, a lifting cylinder 4 arranged at the top of the column 6, a driven gear 20 arranged at the lower part of the column 6, and a horizontal cantilever rod 2 arranged at the top end of the telescopic rod of the lifting cylinder 4. The lower end of the column 6 is supported on one side of the operating platform 22 by a bearing 21. The drilling bit 3 is fixed at the end of the long arm of the horizontal cantilever rod 2. A counterweight 1 is arranged at the end of the short arm of the horizontal cantilever rod 2 to balance the weight of the drilling bit 3. A longitudinal linear module 11 is fixed on the other side above the operating platform 22. A rotary motor 10 is fixed on the slider of the longitudinal linear module 11. The output end of the rotary motor 10 is fixed with an annular support seat 9, and the center line of the annular support seat 9 is perpendicular to the horizontal plane. The positioning component includes a plurality of clamping petals evenly arranged inside the annular support seat 9 and a clamping spring 12 arranged between the clamping petals and the inner peripheral surface of the annular support seat 9. The center line of the annular support seat 9 falls on the path of the drilling bit 3 rotating around the column 6. A positioning groove 19 concentric with the annular support seat 9 is arranged on the upper surface of the operating platform 22.

[0022] In this embodiment, the clamping flap includes an arc-shaped clamping plate 14, an upper horizontal guide plate 15 provided at the upper end of the arc-shaped clamping plate 14, and a lower horizontal guide plate 16 provided at the lower end of the arc-shaped clamping plate 14. The upper horizontal guide plate 15 and the lower horizontal guide plate 16 jointly clamp the annular support seat 9, and a guide post 13 corresponding to the clamping spring 12 is provided on the inner peripheral surface of the annular support seat 9. Above the operation platform 22, there is a Z-shaped bracket 17, and a servo motor 23 is fixed at the top of the Z-shaped bracket 17. A driving gear 18 meshing with the driven gear 20 is provided on the output shaft of the servo motor 23. An infrared emitter 5 is provided on the lower surface of the horizontal cantilever rod 2, and an infrared receiver 7 cooperating with the infrared emitter 5 is provided on the top surface of the servo motor 23 to realize the positioning of the horizontal cantilever rod 2.

[0023] Working principle:

[0024] 1. During use, insert the gear 8 between the clamping flaps inside the annular support seat 9, insert the lower end of the gear shaft into the positioning groove 19 of the operation platform 22, and use the clamping of each clamping flap to straighten the gear part to ensure that the center line of the gear 8 is perpendicular to the operation platform 22.

[0025] 2. Drive the servo motor 23, drive the column 6 to rotate through the driving gear 18 and the driven gear 20. When the infrared receiver 7 is aligned with the infrared emitter 5, a signal is sent, and the servo motor 23 stops. At this time, the center line of the drilling bit 3 hangs directly above the gear 8.

[0026] 3. Driven by the lifting cylinder 4, the horizontal cantilever rod 2 and the drilling bit 3 move downward to drill a hole at the upper end of the gear shaft.

[0027] 4. After completing the upper-end hole drilling, the drilling bit 3 rises and resets. The longitudinal linear module 11 drives the flipping motor 10, the annular support seat 9, and the gear 8 to move upward, and disengages the lower end of the gear shaft from the positioning groove 19. After reaching the flippable height, the flipping motor 10 drives the annular support seat 9 and the gear 8 to flip 180 degrees, and the longitudinal linear module 11 drives the flipping motor 10 to move downward so that the original upper end of the gear shaft is inserted into the positioning groove 19.

[0028] 5. Drive the servo motor 23, drive the column 6 to rotate through the driving gear 18 and the driven gear 20. When the infrared receiver 7 is aligned with the infrared emitter 5, a signal is sent, and the servo motor 23 stops. At this time, the center line of the drilling bit 3 hangs directly above the gear 8 again.

[0029] 6. Driven by the lifting cylinder 4, the horizontal cantilever rod 2 and the drilling bit 3 move downward to drill a hole at the original lower end of the gear shaft. Thus, the hole drilling at both ends of the gear shaft is completed.

[0030] The above has described the embodiments of the present utility model in detail, but the above content is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equal changes and improvements made within the scope of the creation of the present utility model shall still fall within the scope covered by this patent.

Claims

1. A positioning device for machining the gear shaft hole of an automobile gearbox, comprising an operating platform, a cantilever bracket, a punching drill and a positioning assembly, characterized in that: The cantilever bracket includes a column, a lifting cylinder provided at the top of the column, a driven gear provided at the lower part of the column, and a horizontal cantilever rod provided at the top end of the telescopic rod of the lifting cylinder. The lower end of the column is supported on one side of the operation platform by a bearing. The drilling machine is fixed at the end of the long arm of the horizontal cantilever rod. A longitudinal linear module is fixed on the other side above the operation platform. A flipping motor is fixed on the slider of the longitudinal linear module. The output end of the flipping motor is fixed with an annular support seat. The center line of the annular support seat is perpendicular to the horizontal plane. The positioning assembly includes a plurality of clamping petals evenly arranged inside the annular support seat, and a clamping spring provided between the clamping petals and the inner peripheral surface of the annular support seat. The center line of the annular support seat falls on the path of the drilling machine rotating around the column.

2. The positioning device for machining the gear shaft hole of an automobile transmission according to claim 1, characterized in that: A positioning groove concentric with the annular support seat is provided on the upper surface of the operation platform.

3. The machining positioning device for the gear shaft hole of an automobile gearbox according to claim 1, characterized in that: The clamping petal includes an arc-shaped clamping plate, an upper horizontal guide plate provided at the upper end of the arc-shaped clamping plate, and a lower horizontal guide plate provided at the lower end of the arc-shaped clamping plate. The upper horizontal guide plate and the lower horizontal guide plate jointly clamp the annular support seat. Guide columns corresponding to the clamping springs are provided on the inner peripheral surface of the annular support seat.

4. The machining positioning device for the gear shaft hole of an automobile transmission according to claim 1, wherein: A counterweight is provided at the end of the short arm of the horizontal cantilever rod.

5. The machining positioning device for the gear shaft hole of an automotive transmission according to claim 1, wherein: A Z-shaped bracket is provided above the operation platform. A servo motor is fixed at the top of the Z-shaped bracket. A driving gear meshing with the driven gear is provided on the output shaft of the servo motor.

6. The machining positioning device for the gear shaft hole of an automobile transmission according to claim 1, wherein: An infrared emitter is provided on the lower surface of the horizontal cantilever rod. An infrared receiver cooperating with the infrared emitter is provided on the operation platform or a fixed object thereon.

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