Half axle gear chamfering and positioning tool

Abstract

The utility model relates to the technical field of gear machining, in particular to a half axle gear chamfering positioning tool which comprises a base and a workbench arranged at the upper end of the base, a three-jaw chuck is arranged at the upper end of the workbench, three clamping jaws are arranged at the upper end of the three-jaw chuck, a positioning table is arranged above the three-jaw chuck, and three clamping jaw grooves B are formed in the positioning table. The clamping jaws penetrate through the clamping jaw grooves B and are in sliding connection with the clamping jaw grooves B. A plurality of positioning plates are fixedly arranged at the lower end of the positioning table and are in sliding connection with inserting grooves formed in the upper end of the three-jaw chuck, and a lifting mechanism used for adjusting the height of the positioning table is arranged at the upper end of the three-jaw chuck. A half axle gear needing to be processed is placed at the upper end of the positioning table, the half axle gear is fixed through the three-jaw chuck and the clamping jaw, the positioning table can meet the clamping requirements of gears of different heights through lifting, the positioning table can be adjusted to the proper height no matter a thin gear piece or a thick gear piece, the gear piece is made to be located at the optimal machining position, and the machining efficiency is improved. The machining precision is ensured.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, and in particular to a chamfering and positioning fixture for a half-shaft gear. Background Technology

[0002] The half-shaft gear is a crucial component of a car's differential. It is installed within the differential housing and meshes with the planetary gears. When the car is moving, the engine's power is transmitted to the differential via the driveshaft. Under the action of the differential, the half-shaft gear distributes power to the left and right half-shafts according to the vehicle's driving needs, thereby driving the wheels to rotate. Simultaneously, when the vehicle is turning or driving on different road conditions, the half-shaft gear, through its interaction with the planetary gears, allows the left and right wheels to rotate at different speeds, ensuring the vehicle's stability and maneuverability. After initial machining, the half-shaft gear is chamfered using a cutting tool.

[0003] For example, patent application number CN201320626570.2 discloses a gear chamfering positioning fixture, including a positioning device mounted on a worktable. The positioning device consists of a base, a small bevel gear located inside the base, and a large bevel gear meshing with the small bevel gear. On the back of the large bevel gear is a three-jaw chuck structure composed of Archimedean spiral grooves that mesh with three jaws. An inner diameter adjustment hole is provided on the circumference of the chuck, and an arc-shaped inner diameter positioning block is provided on the outer side. This utility model, by modifying the three-jaw chuck, can chamfer gears with different inner diameters, specifications, and modules, offering strong versatility. The addition of a retractable stop device allows for stopping gears of different radii, improving the chamfering quality. When using the chuck jaws to fasten gears with varying thicknesses, some gears may be suspended in mid-air to ensure effective matching with the cutting tool. Since they do not contact the chuck end face, the bottom of the gears is difficult to support effectively, leading to problems such as misalignment during the chamfering process and affecting machining accuracy. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a chamfering and positioning fixture for half-shaft gears to overcome the shortcomings of existing fixtures.

[0005] To achieve the purpose of this utility model, the utility model is achieved through the following technical solution: a half-shaft gear chamfering positioning fixture, including a base and a worktable provided on the upper end of the base, a three-jaw chuck provided on the upper end of the worktable, the three-jaw chuck being rotatably connected to the worktable, and three jaws provided on the upper end of the three-jaw chuck, the jaws being slidably connected to the jaw groove A opened on the upper end of the three-jaw chuck.

[0006] A positioning platform is provided above the three-jaw chuck, and three jaw slots B are provided on the positioning platform. The jaws pass through the jaw slots B and are slidably connected to the jaw slots B. Multiple positioning plates are fixedly provided at the lower end of the positioning platform. The positioning plates are slidably connected to the slots provided at the upper end of the three-jaw chuck. A marking component for displaying the height of the positioning platform is provided on the outside of the three-jaw chuck.

[0007] The lower end of the worktable is equipped with a drive assembly for controlling the rotation of the three-jaw chuck, and the upper end of the three-jaw chuck is equipped with a lifting mechanism for adjusting the height of the positioning table.

[0008] A further improvement is made in that the marking component includes multiple sliding grooves formed on the outside of the three-jaw chuck. The sliding grooves communicate with the slots, and positioning blocks are provided inside the sliding grooves. The positioning blocks are slidably connected to the sliding grooves and are fixedly set at the lower end of the positioning plate. The edge of the sliding grooves is marked with graduations. When the positioning platform is lowered, the positioning plate fixed to the positioning platform will slide down along the slot, and the positioning block fixed at the lower end of the positioning plate will also slide along the sliding groove. The positioning block limits the slot by cooperating with the sliding groove and ensures that the positioning plate will not disengage from the slot, thus separating the positioning platform from the three-jaw chuck.

[0009] A further improvement is that the drive assembly includes a motor, a first gear, and a second gear. The first gear and the second gear are rotatably mounted on the lower end of the worktable. The second gear is fixedly connected to a three-jaw chuck via a connecting shaft. The first gear meshes with the second gear. The motor is fixedly mounted on the inner side of the base, and the motor output end is fixedly connected to the first gear.

[0010] A further improvement is that the lifting mechanism includes a screw and a nut seat. The screw is rotatably mounted on the upper end of the three-jaw chuck, and the nut seat is sleeved on the outside of the screw. The nut seat is threadedly connected to the screw, and the positioning table is sleeved on the outside of the nut seat. The nut seat is fixedly connected to the positioning table.

[0011] A further improvement is that: a handle is provided at the upper end of the screw, the handle is rotatably connected to the screw via a pivot, a nut is provided at the upper end of the screw, the nut is sleeved on the outside of the screw, and the nut is threadedly connected to the external threads opened on the outside of the screw and the outside of the handle.

[0012] A further improvement is that the outer side of the gripper is provided with an anti-slip pattern, which consists of several protrusions on the outer side of the gripper.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The half-shaft gear to be processed is placed on the upper part of the positioning table and fixed with a three-jaw chuck and jaws. The positioning table can be raised and lowered to adapt to the gear clamping requirements of different heights. Whether it is a thin gear or a thick gear, the positioning table can be adjusted to a suitable height to put the gear in the best processing position and ensure processing accuracy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of the positioning platform in this utility model.

[0017] Figure 2 This is a structural diagram of the base in this utility model.

[0018] Figure 3 This is a structural diagram of the three-jaw chuck in this utility model.

[0019] Figure 4 This is a structural diagram of the grip in this utility model.

[0020] The components are as follows: 1. Base; 2. Worktable; 3. Three-jaw chuck; 4. Gripper; 41. Anti-slip pattern; 42. Gripper groove A; 5. Positioning platform; 6. Positioning plate; 7. Slot; 8. Slide groove; 9. Positioning block; 10. Gripper groove B; 11. Screw; 12. Nut seat; 13. Scale; 14. Motor; 15. First gear; 16. Second gear; 17. Handle; 18. Nut; 19. External thread. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a half-shaft gear chamfering positioning fixture, including a base 1 and a worktable 2 located on the upper end of the base 1. A three-jaw chuck 3 is provided on the upper end of the worktable 2. The three-jaw chuck 3 is rotatably connected to the worktable 2. Three jaws 4 are provided on the upper end of the three-jaw chuck 3. The jaws 4 are slidably connected to the jaw groove A42 opened on the upper end of the three-jaw chuck 3.

[0023] A positioning platform 5 is provided above the three-jaw chuck 3. Three jaw slots B10 are provided on the positioning platform 5. The jaw 4 passes through the jaw slots B10 and is slidably connected to the jaw slots B10. Multiple positioning plates 6 are fixedly provided at the lower end of the positioning platform 5. The positioning plates 6 are slidably connected to the slots 7 provided at the upper end of the three-jaw chuck 3. An indicator component for displaying the height of the positioning platform 5 is provided on the outside of the three-jaw chuck 3.

[0024] Place the half-shaft gear to be processed on the upper end of the positioning table 5, and fix it with the three-jaw chuck 3 and the jaws 4. The three-jaw chuck 3 is a commonly used machine tool fixture, mainly composed of its body, three jaws 4 and the drive mechanism set inside the three-jaw chuck 3, etc., which will not be explained in detail here.

[0025] The lower end of the worktable 2 is equipped with a drive assembly for controlling the rotation of the three-jaw chuck 3, and the upper end of the three-jaw chuck 3 is equipped with a lifting mechanism for adjusting the height of the positioning table 5.

[0026] The positioning table 5 can be raised and lowered to adapt to the gear clamping requirements of different heights. Whether it is a thin gear or a thick gear, the positioning table 5 can be adjusted to a suitable height to put the gear in the best processing position and ensure processing accuracy. After the gear is positioned, the tool is placed close to the edge of the gear, and the drive component controls the three-jaw chuck 3 to rotate. The tool turns the edge of the gear to complete the chamfering operation.

[0027] Specifically, the marking component includes multiple sliding grooves 8 formed on the outside of the three-jaw chuck 3. The sliding grooves 8 communicate with the slots 7. Positioning blocks 9 are provided within the sliding grooves 8, slidably connected to them. The positioning blocks 9 are fixedly mounted on the lower end of the positioning plate 6. The edge of the sliding grooves 8 has markings 13. When the positioning platform 5 is lowered, the positioning plate 6, fixed to the positioning platform 5, slides downwards along the slot 7. The positioning blocks 9, fixed to the lower end of the positioning plate 6, also slide along the sliding grooves 8. The positioning blocks 9, by cooperating with the sliding grooves 8, limit the movement of the slot 7 and ensure that the positioning plate 6 does not detach from the slot 7, thus separating the positioning platform 5 from the three-jaw chuck 3. The height of the positioning platform 5 can be adjusted via the markings 13 on the edge of the sliding grooves 8, facilitating precise control by the operator.

[0028] Regarding driver components:

[0029] The drive assembly includes a motor 14, a first gear 15, and a second gear 16. The first gear 15 and the second gear 16 are rotatably mounted on the lower end of the worktable 2. The second gear 16 is fixedly connected to a three-jaw chuck 3 via a connecting shaft. The first gear 15 meshes with the second gear 16. The motor 14 is fixedly mounted inside the base 1, and its output end is fixedly connected to the first gear 15. The motor 14 drives the first gear 15 to rotate. During rotation, the first gear 15 meshes with the second gear 16, causing the second gear 16 to rotate. The lower end of the connecting shaft is fixed to the second gear 16, while the upper end is fixed to the three-jaw chuck 3. When the second gear 16 rotates, the three-jaw chuck 3 also rotates accordingly.

[0030] Regarding the lifting mechanism:

[0031] The lifting mechanism includes a screw 11 and a nut seat 12. The screw 11 is rotatably mounted on the upper end of the three-jaw chuck 3. The nut seat 12 is sleeved on the outside of the screw 11 and is threadedly connected to the screw 11. The positioning table 5 is sleeved on the outside of the nut seat 12, and the nut seat 12 is fixedly connected to the positioning table 5. When adjusting the height of the positioning table 5, the screw 11 is rotated. The screw 11, through its engagement with the nut seat 12, drives the nut seat 12 to move along the shaft of the screw 11. Since the nut seat 12 is fixed to the positioning table 5, the positioning table 5 also moves when the nut seat 12 moves, thus adjusting the placement height of the positioning table 5 and the half-shaft gear.

[0032] To facilitate the rotation of the screw 11, a handle 17 is provided at the upper end of the screw 11. The handle 17 is rotatably connected to the screw 11 via a pivot. A nut 18 is provided at the upper end of the screw 11. The nut 18 is sleeved on the outside of the screw 11 and is threadedly connected to the external thread 19 opened on the outside of the screw 11 and the handle 17.

[0033] Before rotating the handle 17, move it from the top of the nut 18 to one side of the nut 18, so that the handle 17 and the nut 18 form a 90° angle. At this time, the handle 17 can increase the lever arm, making it easier for the screw 11 to rotate. To prevent the handle 17 from being thrown off and causing a safety hazard when the three-jaw chuck 3 rotates, after the positioning table 5 is positioned, return the handle 17 to the top of the screw 11. Then rotate the nut 18 at the top of the screw 11 and screw the nut 18 onto the connection between the handle 17 and the screw 11 to complete the retraction and locking of the handle 17.

[0034] It is important to note that the damping at the connection between the screw 11 and the three-jaw chuck 3 should be kept within an appropriate range. This ensures that the screw 11 does not rotate back when the three-jaw chuck 3 rotates, thus improving the stability of the positioning table 5 after positioning.

[0035] To improve the clamping tightness of the gripper 4, in a preferred embodiment, the outer side of the gripper 4 is provided with anti-slip patterns 41, which are a number of protrusions on the outer side of the gripper 4. The protrusions are integrally formed with the gripper 4.

[0036] How this application works:

[0037] Place the half-shaft gear to be processed on the upper end of the positioning table 5, between the three jaws 4, and fix it with the three-jaw chuck 3 and the jaws 4. The positioning table 5 can be raised and lowered to adapt to the gear clamping requirements of different heights. Whether it is a thin gear or a thick gear, the positioning table 5 can be adjusted to a suitable height to put the gear in the best processing position and ensure processing accuracy. After the gear is positioned, put the cutting tool close to the edge of the gear, and the drive component controls the three-jaw chuck 3 to rotate. The cutting tool turns the edge of the gear to complete the chamfering operation.

[0038] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0039] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A chamfering and positioning fixture for a half-shaft gear, comprising a base (1) and a worktable (2) disposed on the upper end of the base (1), wherein a three-jaw chuck (3) is provided on the upper end of the worktable (2), characterized in that: The three-jaw chuck (3) is rotatably connected to the worktable (2). The upper end of the three-jaw chuck (3) is provided with three jaws (4). The jaws (4) are slidably connected to the jaw groove A (42) opened on the upper end of the three-jaw chuck (3). The three-jaw chuck (3) is provided with a positioning platform (5) above it. The positioning platform (5) is provided with three jaw grooves B (10). The jaw (4) passes through the jaw grooves B (10) and is slidably connected to the jaw grooves B (10). Multiple positioning plates (6) are fixedly provided at the lower end of the positioning platform (5). The positioning plates (6) are slidably connected to the slots (7) opened at the upper end of the three-jaw chuck (3). The three-jaw chuck (3) is provided with an indicator component for displaying the height of the positioning platform (5) on the outside. The lower end of the worktable (2) is provided with a drive assembly for controlling the rotation of the three-jaw chuck (3), and the upper end of the three-jaw chuck (3) is provided with a lifting mechanism for adjusting the height of the positioning table (5).

2. The half-shaft gear chamfering positioning fixture according to claim 1, characterized in that: The marking component includes multiple grooves (8) formed on the outside of the three-jaw chuck (3). The grooves (8) are connected to the slot (7). A positioning block (9) is provided in the groove (8). The positioning block (9) is slidably connected to the groove (8). The positioning block (9) is fixedly set at the lower end of the positioning plate (6). The edge of the groove (8) is provided with a scale (13).

3. The half-shaft gear chamfering positioning fixture according to claim 1, characterized in that: The drive assembly includes a motor (14), a first gear (15), and a second gear (16). The first gear (15) and the second gear (16) are rotatably disposed on the lower end of the worktable (2). The second gear (16) is fixedly connected to the three-jaw chuck (3) through a connecting shaft. The first gear (15) meshes with the second gear (16). The motor (14) is fixedly disposed on the inner side of the base (1). The output end of the motor (14) is fixedly connected to the first gear (15).

4. The half-shaft gear chamfering positioning fixture according to claim 1, characterized in that: The lifting mechanism includes a screw (11) and a nut seat (12). The screw (11) is rotatably mounted on the upper end of the three-jaw chuck (3). The nut seat (12) is sleeved on the outside of the screw (11). The nut seat (12) is threadedly connected to the screw (11). The positioning table (5) is sleeved on the outside of the nut seat (12). The nut seat (12) is fixedly connected to the positioning table (5).

5. The half-shaft gear chamfering positioning fixture according to claim 4, characterized in that: The upper end of the screw (11) is provided with a handle (17), which is rotatably connected to the screw (11) via a pivot. The upper end of the screw (11) is provided with a nut (18), which is sleeved on the outside of the screw (11) and threadedly connected to an external thread (19) opened on the outside of the screw (11) and the handle (17).

6. The half-shaft gear chamfering positioning fixture according to claim 1, characterized in that: The outer side of the gripper (4) is provided with anti-slip pattern (41), which is a number of protrusions provided on the outer side of the gripper (4).

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