Automobile differential housing plug hole processing tool
By designing a machining fixture for the pin hole of the automotive differential housing, and using a combination of a positioning seat and a clamping cylinder, the problem of unstable machining of the pin hole of the differential housing was solved, achieving high-precision and high-efficiency machining results.
Patent Information
- Application Number
- CN202521547918.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-23
AI Technical Summary
The lack of a dedicated fixture for machining the pin holes in existing differential housings leads to unstable machining, affecting accuracy and efficiency.
A tooling for machining the pin hole of an automotive differential housing was designed. It adopts an L-shaped base and a vertical mounting plate, and is equipped with a positioning seat, a support arm and a clamping cylinder. The housing is kept stable and does not wobble by a combination of positioning pin and clamping cylinder.
It achieves high-precision machining of pin holes, improves processing efficiency and saves manual labor.
Smart Images
Figure CN224674377U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive differential processing technology, and in particular to a tooling for processing the pin hole of an automotive differential housing. Background Technology
[0002] like Figure 1 and Figure 2 As shown, the existing differential housing includes housing a, a central shaft hole b at the center of the housing, an internal cavity inside the central shaft hole, and positioning holes d on both sides of the upper part of the housing.
[0003] When machining the differential housing, a pin hole (c) needs to be vertically machined on one side of the front of the differential housing. However, due to the lack of specialized fixtures, the drilling of the pin hole in the automotive differential housing relies solely on manual clamping, which cannot guarantee stability and prevent wobbling, thus compromising machining accuracy, resulting in low machining efficiency and quality. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model designs a tooling for machining the pin hole of an automotive differential housing.
[0005] The present invention adopts the following technical solution: A machining fixture for pin holes in an automotive differential housing includes a base, which is L-shaped and includes a bottom plate and a vertical mounting plate. The vertical mounting plate has multiple machining positions, each with a positioning seat, a support arm, and a clamping cylinder. The positioning seat is horizontally fixed to the vertical mounting plate, and a positioning post is fixedly mounted on the positioning seat for insertion into the positioning holes on the automotive differential housing. The positioning post has through holes corresponding to pre-machined pin holes on the differential housing. Support arms are respectively mounted on the vertical mounting plates on both sides below the positioning seat, supporting the bottom sides of the automotive differential housing. A clamping cylinder is correspondingly mounted on the vertical mounting plate directly below the positioning seat, with its jaws clamping the outer side of the automotive differential housing.
[0006] Preferably, the outer end of the positioning post is tapered and narrowed.
[0007] Preferably, the clamping cylinder includes a cylinder, a gripper, a support column, and a connecting plate. The output end of the cylinder is hinged to the connecting plate, and the end of the connecting plate is hinged to the middle of the gripper. The support column is fixed on a vertical mounting plate below the cylinder and is hinged to the tail of the gripper.
[0008] Preferably, the clamping cylinder has an adjusting screw hole on its jaws, and an adjusting block is detachably installed on the adjusting screw hole by bolts. The adjusting block is located at the clamping point at the front end of the jaws.
[0009] Preferably, a lifting ring is fixedly installed on the top of the vertical mounting plate.
[0010] Preferably, a frustum-shaped support platform is fixedly installed on the support arm.
[0011] Preferably, the base plate has a pin positioning hole for installing a positioning pin.
[0012] Preferably, the base plate has mounting holes.
[0013] Preferably, an auxiliary support seat is fixedly installed on the back of the base.
[0014] The beneficial effects of this utility model are as follows: This utility model designs a tooling specifically for machining the pin hole of an automotive differential housing. The tooling fixture keeps the automotive differential housing flat and stable during clamping, ensuring that the automotive differential housing is stable and does not shake after clamping. Vertical pin holes are drilled from the through hole position, thereby ensuring machining accuracy, improving machining efficiency, and saving manual labor. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the front of an existing differential housing; Figure 2 This is a schematic diagram of the structure on the back of an existing differential housing; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of one usage state of this utility model; In the diagram: a, housing; b, central shaft hole; c, pin hole; d, positioning hole; 1, vertical mounting plate; 2, base plate; 3, positioning seat; 4, positioning column; 5, through hole; 6, support arm; 7, support platform; 8, clamping cylinder; 9, gripper; 10, support column; 11, connecting plate; 12, adjusting screw hole; 13, adjusting block; 14, pin positioning hole; 15, fixed mounting hole; 16, auxiliary support seat; 17, lifting ring. Detailed Implementation
[0016] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example: Figure 3As shown, a machining fixture for the pin hole of an automotive differential housing includes a base, which is L-shaped and includes a base plate 1 and a vertical mounting plate 2. The vertical mounting plate is provided with multiple machining positions, each machining position being provided with a positioning seat 3, a support arm, and a clamping cylinder. The positioning seat is horizontally fixed on the vertical mounting plate, and a positioning post 4 is fixedly installed on the positioning seat for insertion into the positioning hole on the automotive differential housing. The positioning post has a through hole 5 corresponding to the pre-machined pin hole on the differential housing. Support arms 6 are respectively installed on the vertical mounting plates on both sides below the positioning seat, and the support arms are used to support the bottom sides of the automotive differential housing. A clamping cylinder 8 is installed on the vertical mounting plate directly below the positioning seat, and the clamping jaws 9 of the clamping cylinder clamp the outer side of the automotive differential housing.
[0017] The outer end of the positioning column is tapered. The clamping cylinder includes a cylinder, a jaw, a support column 10, and a connecting plate 11. The output end of the cylinder is hinged to the connecting plate, and the end of the connecting plate is hinged to the middle of the jaw. The support column is fixed on a vertical mounting plate below the cylinder and is hinged to the tail of the jaw.
[0018] The clamping cylinder has an adjusting screw hole 12 on its gripper, and an adjusting block 13 is detachably installed on the adjusting screw hole by means of a bolt. The adjusting block is located at the clamping point at the front end of the gripper.
[0019] A lifting ring 17 is fixedly installed on the top of the vertical mounting plate. A frustum-shaped support platform 7 is fixedly installed on the support arm. A pin positioning hole 14 is provided on the base plate for installing a positioning pin.
[0020] The base plate has mounting holes 15. An auxiliary support base 16 is fixedly installed on the back of the base.
[0021] like Figure 4 As shown, when using this utility model, the car differential housing to be processed is inserted into the positioning post through the positioning hole. At this time, the support platform on the support arm supports the bottom two sides of the car differential housing to prevent the car differential housing from rotating circumferentially. At the same time, the clamping cylinder is activated, and the clamping jaws of the clamping cylinder clamp the outside of the car differential housing, clamping the car differential housing on the positioning seat and restricting the axial movement of the car differential housing along the positioning post, so that the entire car differential housing is flat and stable. At this time, vertical pin holes can be drilled through the through hole position on the positioning post.
[0022] This utility model designs a tooling specifically for machining pin holes in automotive differential housings. This tooling fixture keeps the automotive differential housing flat and stable during clamping, ensuring that the automotive differential housing is stable and does not wobble after clamping. Vertical pin holes are drilled from the through hole position, thereby ensuring machining accuracy, improving machining efficiency, and saving manual labor.
[0023] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.
Claims
1. An automobile differential housing latch hole processing tooling fixture comprising a base, characterized in that, The base is L-shaped and includes a base plate and a vertical mounting plate. The vertical mounting plate has multiple machining positions, each with a positioning seat, a support arm, and a clamping cylinder. The positioning seat is horizontally fixed to the vertical mounting plate and has a positioning pin fixedly installed on it for insertion into the positioning holes on the vehicle differential housing. The positioning pin has through holes corresponding to the pre-machined pin holes on the differential housing. Support arms are installed on the vertical mounting plates on both sides below the positioning seat to support the bottom sides of the vehicle differential housing. A clamping cylinder is installed on the vertical mounting plate directly below the positioning seat, and the clamping cylinder's jaws clamp the outside of the vehicle differential housing.
2. The automobile differential housing latch hole processing tooling fixture according to claim 1, characterized in that, The outer end of the positioning post is tapered and narrowed.
3. The automobile differential housing latch hole processing tooling fixture according to claim 1, characterized in that, The clamping cylinder includes a cylinder, a jaw, a support column, and a connecting plate. The output end of the cylinder is hinged to the connecting plate, and the end of the connecting plate is hinged to the middle of the jaw. The support column is fixed on a vertical mounting plate below the cylinder and is hinged to the tail of the jaw.
4. The automobile differential housing latch hole processing tooling fixture according to claim 1, characterized in that, The clamping cylinder has an adjusting screw hole on its jaws, and an adjusting block is detachably installed on the adjusting screw hole by bolts. The adjusting block is located at the clamping point at the front end of the jaw.
5. The automobile differential housing latch hole processing tooling fixture according to claim 1, characterized in that, A lifting ring is fixedly installed on the top of the vertical mounting plate.
6. The automobile differential housing latch hole processing tooling fixture according to claim 1, characterized in that, A frustum-shaped support platform is fixedly installed on the support arm.
7. The automobile differential housing latch hole processing tooling fixture according to claim 1, characterized in that, The base plate has a pin positioning hole for installing a positioning pin.
8. The automobile differential housing latch hole processing tooling fixture according to claim 1, characterized in that, The base plate has mounting holes.
9. The automobile differential housing latch hole processing tooling fixture according to claim 1, characterized in that, An auxiliary support seat is fixedly installed on the back of the base.