Gear machining clamp

Abstract

The utility model relates to the field of gear machining, in particular to a gear machining clamp which comprises a base, a positioning column, a supporting table and a pressing block, the pressing block slides to be close to or away from the supporting table, the positioning column is slidably connected with a plurality of abutting blocks, the sliding direction of the abutting blocks is perpendicular to the axis of the positioning column, and the abutting blocks slidably stretch into or stretch out of the positioning column. The abutting blocks are used for abutting against the inner wall of a shaft hole of the gear, a driving assembly is arranged on the positioning column and drives the abutting blocks to move, and a driving piece is arranged on the base and drives the pressing block to move. In the gear positioning process, the supporting table supports the gear to enable the abutting blocks to be located in the shaft hole, the driving piece drives the abutting blocks to move and stretch out of the positioning column to abut against the inner wall of the gear shaft hole to position the gear, and the pressing block and the supporting table abut against the two opposite ends of the gear respectively to further position the gear. The whole positioning process is automatically implemented through the driving piece and the driving assembly, gear positioning is facilitated, and the labor amount of workers can be reduced.

Description

Technical fields:

[0001] This utility model belongs to the technical field of gear processing, and specifically refers to a gear processing fixture. Background technology:

[0002] A gear machining fixture is a tool specifically designed to hold gears in place for machining and assembly.

[0003] In related technologies, the clamps used for positioning gears generally use a screw feed method to clamp and fix the gears. Screw feed requires the operator to twist the screw forcefully, which is very strenuous and needs to be improved. Summary of the Invention:

[0004] The purpose of this invention is to provide a gear machining fixture to solve the problems mentioned in the background art.

[0005] This utility model is implemented as follows:

[0006] A gear machining fixture includes a base, a positioning post on the base, a support platform on the positioning post, and a pressure block that is slidably connected to the base. The support platform supports a gear, and the pressure block slides closer to or away from the support platform. The positioning post passes through a gear shaft hole, and a plurality of abutting blocks are slidably connected to the positioning post. The sliding direction of the plurality of abutting blocks is perpendicular to the axis of the positioning post. The plurality of abutting blocks slide into or out of the positioning post and are spaced apart around the outer periphery of the positioning post. The plurality of abutting blocks abut against the inner wall of the gear shaft hole. A driving assembly is provided on the positioning post to drive the plurality of abutting blocks to move. A driving member is provided on the base to drive the pressure block to move.

[0007] Preferably, the driving assembly includes a driving block that is vertically and slidably connected to the positioning post and an elastic element disposed on the positioning post. The driving block is gradually tapered toward the abutting block, and a plurality of abutting blocks are disposed around the outer periphery of the driving block. The driving block abuts against the abutting blocks, and the driving block is located on the moving path of the pressure block. The elastic element abuts against the driving block, causing the driving block to have a tendency to move away from the abutting block.

[0008] Preferably, the support platform is provided with a waste chip groove, which is gradually narrowed along the direction close to the abutment block. The projection of the abutment block on the axis of the positioning column is located in the waste chip groove. The inner wall of the waste chip groove is used to abut the abutment block. The support platform is slidably connected to the positioning column. The support platform is provided with a friction surface, which is in contact with the driving block. The driving block drives the support platform to rise and fall through the friction between itself and the support platform.

[0009] Preferably, the positioning column has a limiting groove for the support platform to engage.

[0010] Preferably, the driving block includes a lifting column slidably connected to the positioning column and an abutment block slidably connected to the lifting column. The abutment block is located on the moving path of the pressing block. The first elastic element abuts against the lifting column, causing the lifting column to tend to move away from the abutment block. The lifting column is used to abut against the abutment block. The lifting column is provided with a second elastic element, which abuts against the abutment block, causing the abutment block to tend to move away from the abutment block. The elastic coefficient of the second elastic element is greater than that of the first elastic element.

[0011] Preferably, the positioning post is provided with a plurality of gaskets, the gaskets are correspondingly arranged with the abutting block, the gaskets are arranged around the abutting block, and the gaskets are attached to the abutting block.

[0012] Preferably, the abutting block has an arc-shaped surface machined on it, and the arc-shaped surface abuts against the inner wall of the shaft hole of the gear.

[0013] Preferably, the clamping block is machined with anti-slip texture, and the anti-slip texture and the arc-shaped surface are located at the same end of the prime number clamping block.

[0014] The outstanding advantages of this utility model compared to the prior art are:

[0015] 1. In the process of positioning the gear, the support table supports the gear so that the clamping block is located in the shaft hole. The driving component drives several clamping blocks to move and extend out of the positioning column to clamp the inner wall of the gear shaft hole to position the gear. The pressure block and the support table clamp the opposite ends of the gear to further position the gear. This helps to improve the positioning stability. Moreover, the entire positioning process is automatically implemented by the driving component and the driving assembly, which facilitates the positioning of the gear and helps to reduce the workload of the workers.

[0016] 2. This utility model installs the driving block on the moving path of the pressure block. During the positioning of the gear, as the driving component drives the pressure block to move closer to the support platform, the pressure block abuts against the driving block, causing the driving block to move downward. During the movement of the driving block, the surface of the driving block abuts against the clamping block, causing the clamping block to move along the surface of the driving block and extend out of the positioning post to abut against the inner wall of the gear shaft hole. When the positioning is released, the pressure block moves away from the driving block and the gear, and the driving block moves upward under the action of the elastic element to disengage from the clamping block, making it easy to remove the gear.

[0017] 3. This utility model divides the driving block into a lifting column and abutting block, and connects the lifting column and abutting block through an elastic element. When the lifting column drives the abutting block to press against the inner wall of the gear shaft hole, the lifting column and the abutting block move relative to each other. After the abutting block presses against the inner wall of the gear shaft hole, the pressure block can also move relative to the lifting column to press against the side of the gear away from the support table, which is beneficial to improving the adaptability of the fixture. Attached image description:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial sectional view of the present invention, mainly showing the connection structure between the positioning post and the driving block;

[0020] Figure 3 This is a partial sectional view of the present invention, mainly showing the connection structure between the positioning column, the driving block and the support platform.

[0021] Instruction manual drawing reference numerals: 1. Base; 11. Drive component; 111. Drive cylinder; 2. Positioning column; 21. Sliding groove; 22. Abutting block; 221. Arc-shaped surface; 222. Anti-slip texture; 23. Lifting groove; 24. Gasket; 25. Limiting groove; 3. Support platform; 31. Support part; 311. Waste chip groove; 32. Lifting part; 321. Connection port; 322. Friction surface; 4. Pressure block; 41. Groove; 5. Drive assembly; 51. Drive block; 511. Lifting column; 5111. Guide surface; 5112. Elastic element two; 512. Abutting block; 52. Elastic element one. Detailed implementation method:

[0022] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —3:

[0023] This application discloses a gear machining fixture, see [link to relevant documentation]. Figure 1 The gear assembly includes a base 1, a positioning post 2, a support platform 3, and a pressure block 4. The positioning post 2 is located above the base 1, with its axis vertically aligned. The positioning post 2 is fixedly connected to the base 1. The support platform 3 is arranged around the outer periphery of the positioning post 2 and is slidably connected to the positioning post 2. The support platform 3 supports the gear to be processed. The pressure block 4 is located above the positioning post 2. A driving component 11, which is a driving cylinder 111, is fixed to the base 1. The driving cylinder 111 drives the pressure block 4 to move closer to or away from the support platform 3. The pressure block 4 is slidably connected to the base 1 via the driving cylinder 111. The gear is positioned by the support platform 3 and the pressure block 4 pressing against the opposite sides of the gear.

[0024] See Figure 2 and Figure 3 The positioning post 2 is provided with several sliding grooves 21. When the support platform 3 is at its lowest point, the sliding grooves 21 are located above the support platform 3. The several sliding grooves 21 are evenly distributed around the outer periphery of the positioning post 2. Several abutting blocks 22 are slidably connected to the positioning post 2. The sliding direction of the abutting blocks 22 is perpendicular to the axis of the positioning post 2. The position and number of abutting blocks 22 correspond one-to-one with the position and number of sliding grooves 21. The abutting blocks 22 slide into or out of the corresponding sliding grooves 21. The positioning post 2 is slidably connected with a driving component 5. The driving component 5 drives the abutting blocks 22 to move and extend out of the sliding grooves 21.

[0025] See Figure 2 and Figure 3 A lifting groove 23 is provided at the center of the positioning column 2. The lifting groove 23 is connected to several sliding grooves 21. The pressing block 22 slides into or out of the lifting groove 23. The drive assembly 5 includes a drive block 51 and an elastic element 52. The drive block 51 includes a lifting column 511 and an abutment block 512. The lifting groove 23 is for the lifting column 511 to be inserted into. The lifting column 511 is slidably connected to the lifting groove 23. A guide surface 5111 is formed on the lifting column 511. The guide surface 5111 is arranged around the outer periphery of the lifting column 511 and is located above the support platform 3. The guide surface 5111 is gradually tapered along the direction close to the abutment block 22. Several abutment blocks 22 are arranged around the outer periphery of the lifting column 511. The guide surface 5111 abuts against several abutment blocks 22, causing the abutment blocks 22 to move along the guide surface 5111 and extend out of the sliding groove 21. The opposite ends of the elastic element 52 are fixedly connected to the positioning column 2 and the lifting column 511, respectively. The elastic element 52 abuts against the lifting column 511, so that the lifting column 511 has a tendency to move away from the support platform 3, which facilitates the reset of the lifting column 511.

[0026] See Figure 1 and Figure 3 The abutment block 512 is located on opposite sides of the lifting column 511. The abutment block 512 is slidably connected to the lifting column 511, protruding from the lifting column 511. The abutment block 512 is located on the moving path of the pressure block 4. The pressure block 4 abuts against the abutment block 512, causing the abutment block 512 and the lifting column 511 to move downwards, so that the guide surface 5111 abuts against the pressing block 22. An elastic element 2 5112 is fixed on the lifting column 511. The elastic element 2 5112 is located on the side of the abutment block 512 near the support platform 3. The opposite ends of the elastic element 2 5112 are fixedly connected to the abutment block 512 and the lifting column 511, respectively. The elastic element 2 5112 abuts against the abutment block 512, causing the abutment block 512 to tend to move away from the support platform 3. In this embodiment, both the first elastic element 52 and the second elastic element 5112 are springs, and the elastic coefficient of the second elastic element 5112 is greater than that of the first elastic element 52.

[0027] See Figure 2 and Figure 3A number of gaskets 24 are fixed on the positioning post 2. The position and number of gaskets 24 correspond one-to-one with the position and number of the clamping blocks 22, and one-to-one with the position and number of the sliding grooves 21. The gaskets 24 are arranged around the outer periphery of the corresponding sliding grooves 21 and the outer periphery of the corresponding clamping blocks 22, and the gaskets 24 are in contact with the outer periphery of the clamping blocks 22. The gaskets 24 are used to reduce the entry of debris from the surface of the clamping blocks 22 into the positioning post 2.

[0028] The lifting column 511 moves the clamping block 22 by abutting, which makes it easy to remove the drive assembly 5 if it is damaged.

[0029] See Figure 1 The pressure block 4 has a groove 41 on the side near the support platform 3, into which the abutment block 512 is inserted. The lifting column 511 does not abut against the pressure block 4.

[0030] When positioning the gear to be processed, the positioning pin 2 is inserted through the gear, and the gear is supported on the support platform 3. The drive cylinder 111 drives the pressure block 4 to descend. After the abutment block 512 is inserted into the groove 41, the pressure block 4 drives the abutment block 512 and the lifting pin 511 to move closer to the support platform 3. When the lifting pin 511 abuts the pressing block 22 and the pressing block 22 presses against the inner wall of the gear shaft hole, the pressure block 4 continues to move. When the elastic element 2 5112 retracts, the pressure block 4 presses against the side of the gear away from the support platform 3 for further positioning.

[0031] See Figure 1 The end of the clamping block 22 away from the upgrading groove is machined with an arc-shaped surface 221, and the end of the clamping block 22 away from the lifting groove 23 is machined with an anti-slip texture 222. The anti-slip texture 222 and the arc-shaped surface 221 are located on the same side. The extension direction of the anti-slip texture 222 is parallel to the axis of the positioning column 2. The arc-shaped surface 221 and the anti-slip texture 222 are used to abut against the inner wall of the gear shaft hole, so that the gear is not easy to rotate during the processing.

[0032] See Figure 1 and Figure 3 The upper surface of the support platform 3 is provided with a waste chip groove 311, which tapers downwards. Several abutment blocks 22 are projected in the vertical direction within the waste chip groove 311. The inner wall of the waste chip groove 311 is used to abut the abutment blocks 22 that protrude from the sliding groove 21, so that the abutment blocks 22 move and extend into the sliding groove 21.

[0033] See Figure 1 and Figure 3A limiting groove 25 is provided on the positioning column 2. The limiting groove 25 is located below the sliding groove 21 and is connected to the lifting groove 23. The support platform 3 includes a support part 31 and a lifting part 32. The support part 31 is located above the lifting part 32. The waste chip groove 311 is provided on the support part 31. The support part 31 is fixedly connected to the lifting part 32. The limiting groove 25 is for the lifting part 32 to be inserted. The inner walls of the upper and lower ends of the limiting groove 25 abut against the lifting part 32 to position the lifting part 32. A connection port 321 is provided on the lifting part 32. The connection port 321 is connected to the lifting groove 23 and is located on the moving path of the lifting column 511. A friction surface 322 is formed on the bottom inner wall of the connection port 321. The friction surface 322 is used to fit the lifting column 511 and increase the friction between the lifting column 511 and the connection port 321.

[0034] In other embodiments, a magnetic block for attracting the lifting column 511 is installed on the lifting part 32. The lifting column 511 drives the lifting part 32 to rise and fall through the magnetic force between the magnetic block and the lifting column 511, thereby driving the support part 31 to rise and fall.

[0035] During gear positioning, the pressure block 4 drives the lifting column 511 to descend via the abutment block 512, simultaneously moving the clamping block 22 out of the sliding groove 21 and causing the lower end of the lifting column 511 to engage with the connection port 321. After gear processing is completed, the pressure block 4 moves away from the abutment block 512, and the lifting column 511 moves upward under the action of the elastic element 52. The lifting column 511 drives the support platform 3 to move upward through friction with the lifting part 32. When the lifting part 32 abuts against the upper inner wall of the limiting groove 25, the lifting column 511 continues to rise and disengage from the lifting part 32. During the rising process of the lifting part 32, the inner wall of the waste chip groove 311 adheres to the clamping block 22 extending from the positioning column 2, causing the clamping block 22 to reset. After the lifting part 32 disengages from the lifting column 511, the lifting part 32 descends under the action of gravity and adheres to the lower inner wall of the limiting groove 25 to complete the reset. In this embodiment, the support platform 3 is hollow.

[0036] The implementation principle of a gear processing fixture in this application embodiment is as follows: the driving cylinder 111 drives the pressure block 4 to press the gear while driving the clamping block 22 to press against the inner wall of the gear shaft hole. The positioning stability is high. The operator only needs to put the gear in and take it out. There is no need to manually adjust the fixture to clamp the gear, which helps to reduce the workload of the operator.

[0037] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A gear machining fixture, characterized in that: The system includes a base (1), a positioning post (2) on the base (1), a support platform (3) on the positioning post (2), and a pressure block (4) that is slidably connected to the base (1). The support platform (3) is used to support the gear. The pressure block (4) slides closer to or away from the support platform (3). The positioning post (2) passes through a gear shaft hole. Several abutting blocks (22) are slidably connected to the positioning post (2). The sliding direction of the several abutting blocks (22) is relative to the positioning post (1). 2) The axis is perpendicular, and several of the abutting blocks (22) slide into or out of the positioning post (2). Several of the abutting blocks (22) are spaced around the outer periphery of the positioning post (2). Several of the abutting blocks (22) are used to abut against the inner wall of the shaft hole of the gear. The positioning post (2) is provided with a driving assembly (5). The driving assembly (5) drives several of the abutting blocks (22) to move. The base (1) is provided with a driving member (11). The driving member (11) drives the pressure block (4) to move.

2. The gear machining fixture according to claim 1, characterized in that: The drive assembly (5) includes a drive block (51) that is slidably connected to the positioning post (2) and an elastic element (52) disposed on the positioning post (2). The drive block (51) is gradually tapered toward the abutment block (22). A plurality of abutment blocks (22) are disposed around the outer periphery of the drive block (51). The drive block (51) abuts against the abutment block (22). The drive block (51) is located on the moving path of the pressure block (4). The elastic element (52) abuts against the drive block (51) so that the drive block (51) has a tendency to move away from the abutment block (22).

3. A gear machining fixture according to claim 2, characterized in that: The support platform (3) is provided with a waste chip groove (311). The waste chip groove (311) is gradually narrowed along the direction close to the abutment block (22). The projection of the abutment block (22) on the axis of the positioning column (2) is located in the waste chip groove (311). The inner wall of the waste chip groove (311) is used to abut the abutment block (22). The support platform (3) is slidably connected to the positioning column (2). The support platform (3) is provided with a friction surface (322). The friction surface (322) is in contact with the driving block (51). The driving block (51) drives the support platform (3) to rise and fall through friction with the support platform (3).

4. A gear machining fixture according to claim 3, characterized in that: The positioning column (2) has a limiting groove (25) for the support platform (3) to be inserted into.

5. A gear machining fixture according to claim 2, characterized in that: The drive block (51) includes a lifting column (511) slidably connected to the positioning column (2) and an abutment block (512) slidably connected to the lifting column (511). The abutment block (512) is located on the moving path of the pressure block (4). The first elastic element (52) abuts against the lifting column (511), causing the lifting column (511) to tend to move away from the abutment block (22). The lifting column (511) is used to abut against the abutment block (22). The lifting column (511) is provided with a second elastic element (5112). The second elastic element (5112) abuts against the abutment block (512), causing the abutment block (512) to tend to move away from the abutment block (22). The elastic coefficient of the second elastic element (5112) is greater than the elastic coefficient of the first elastic element (52).

6. A gear machining fixture according to claim 1, characterized in that: The positioning post (2) is provided with a plurality of gaskets (24), the gaskets (24) are correspondingly arranged with the abutting block (22), the gaskets (24) are arranged around the abutting block (22), and the gaskets (24) are attached to the abutting block (22).

7. A gear machining fixture according to claim 1, characterized in that: An arc-shaped surface (221) is machined on the abutting block (22), and the arc-shaped surface (221) abuts against the inner wall of the shaft hole of the gear.

8. A gear machining fixture according to claim 7, characterized in that: Anti-slip texture (222) is formed on the abutment block (22), and the anti-slip texture (222) and the arc surface (221) are located at the same end of the abutment block (22).

Images