Differential shell planet hole machining clamp
By designing a differential housing planetary hole machining fixture that includes a tilting table and cylinder drive, the problem of existing fixtures requiring two clamping operations is solved, and efficient machining of differential housing planetary holes is achieved.
Patent Information
- Application Number
- CN202520574617.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The existing differential housing planetary hole machining fixture is inconvenient to clamp, requiring two clamping operations, which affects machining efficiency.
A fixture structure including a tilting table, a fixture bracket, a support base, a positioning shaft, an expansion sleeve, and a tie rod is designed. The tie rod is driven by a cylinder to expand the expansion sleeve, enabling the machining of two planetary holes in one clamping operation.
The fixture has a simple structure, is easy to clamp, and can automatically flip, which significantly improves machining efficiency.
Smart Images
Figure CN223917353U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to machine adds the fixture field, concretely relates to a differential mechanism housing planetary hole processing fixture. BACKGROUND
[0002] The automobile differential mechanism can make left, right (or front, rear) drive wheel realize the mechanism of rotating at different rotating speeds. It is mainly composed of left and right half axle gear, two planetary gears and gear frame. The function is when the automobile turns to drive or drives on uneven road, makes left and right wheels roll at different rotating speeds, that is, guarantees both sides drive wheel to make pure rolling motion. The differential mechanism is arranged for adjusting the rotating speed difference of left and right wheels. When four-wheel driving, in order to drive four wheels, must connect all wheels, if four wheels are mechanically connected together, when the automobile drives on curve, cannot rotate at the same speed, in order to let the automobile curve drive rotating speed be basically consistent, when needing to add intermediate differential to adjust the rotating speed difference of front and rear wheels.
[0003] The differential mechanism housing needs to use the fixture to be fixed when processing the planetary hole, so as to avoid the position from deviating in the drilling process, the existing fixture is inconvenient to clamp, and two clamping is needed when processing two planetary holes, which seriously affects the machining efficiency. SUMMARY
[0004] In view of the above deficiencies in the prior art, the utility model provides a differential mechanism housing planetary hole processing fixture, which is simple in structure and convenient to operate, and is beneficial to improving the machining efficiency.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A differential mechanism housing planetary hole processing fixture, characterized by: including turnover table, fixture support, support seat, positioning shaft, expansion sleeve, pull rod, wherein the fixture support is arranged on the turnover table, the fixture support has a vertical mounting plate, the positioning shaft is arranged in the middle of the vertical mounting plate, the support seat is arranged on the fixture support and coaxially arranged with the positioning shaft, the front end of the positioning shaft is a tapered portion, the expansion sleeve is sleeved on the tapered portion, the pull rod is movably arranged in the shaft hole of the positioning shaft, the upper end of the pull rod has a disc head portion limiting the expansion sleeve, the support seat has an annular support surface, and the annular support surface is provided with a diamond pin.
[0007] Further, the upper part of the expansion sleeve has a flange, the upper end of the pull rod has a ring groove, and the flange of the expansion sleeve is limited in the ring groove.
[0008] Further, the expansion sleeve is composed of multiple parts, the outer side of the expansion sleeve is provided with spring hoops, and the outer side of the expansion sleeve is provided with a limiting groove limiting the spring hoops.
[0009] Furthermore, a cylinder is provided on the clamp bracket, and the piston rod of the cylinder is connected to the rear end of the pull rod.
[0010] The advantages of this utility model include: the fixture has a simple structure, is easy to clamp, can automatically flip, and can process two planetary holes at once, which significantly improves machining efficiency. Attached Figure Description
[0011] Fig. 1 This is a schematic diagram of the structure of this utility model;
[0012] Fig. 2 This is a cross-sectional structural diagram of the present invention. Detailed Implementation
[0013] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0014] One such Figs. 1-2 The differential housing planetary bore machining fixture shown includes a tilting table 1, a fixture bracket 2, a support base 3, a positioning shaft 4, an expansion sleeve 5, and a tie rod 6. The fixture bracket 2 is mounted on the tilting table 1 and has a vertical mounting plate 7. The positioning shaft 4 is located in the middle of the vertical mounting plate 7 and is used to position the half-shaft holes of the differential housing. The support base 3 is mounted on the fixture bracket 2 and coaxially arranged with the positioning shaft 4, supporting the flange portion of the differential housing. The front end of the positioning shaft 4 is tapered, and the expansion sleeve 5 is fitted onto the tapered portion. The expansion sleeve 5 expands through a pressing fit with the tapered portion. The tie rod 6 is movably mounted within the central hole of the positioning shaft 4. A cylinder 10 is mounted on the fixture bracket 2, and the piston rod of the cylinder 10 is connected to the rear end of the tie rod 6. The upper end of the tie rod 6 has a disc head that limits the expansion sleeve 5. Pulling down the tie rod 6 compresses the expansion sleeve 5, causing it to expand and tighten the differential housing.
[0015] The support base 3 has an annular support surface, on which a diamond pin 8 is provided. The annular support surface is used to position the flange portion of the differential housing, and the diamond pin 8 is used to position the holes on the flange, so that the planetary holes are located on the top surface perpendicular to the tilting table 1.
[0016] To facilitate the loosening of the expansion sleeve 5, the upper part of the expansion sleeve 5 has a flange, and the upper end of the tie rod 6 has an annular groove. The flange of the expansion sleeve 5 is limited within the annular groove. To make the expansion sleeve 5 expand in a cylindrical shape, the expansion sleeve 5 is composed of three parts forming a ring. A spring hoop 9 is provided on the outer side of the expansion sleeve 5, and limiting grooves for limiting the spring hoop 9 are provided on the upper and lower outer sides of the expansion sleeve 5.
[0017] The technical solutions provided by the embodiments of the present application are described in detail above, and the principles and implementation manners of the embodiments of the present application are described by applying specific examples; the above description of the embodiments is only applicable to helping understand the principles of the embodiments of the present application; meanwhile, for the general technical personnel in the art, the embodiments of the present application will have changes in the specific implementation manners and application ranges, and the above description should not be understood as the limitation of the embodiments of the present application.
Claims
1. A fixture for machining planetary bores in a differential housing, characterized in that: The assembly includes a tilting table (1), a clamp bracket (2), a support base (3), a positioning shaft (4), an expansion sleeve (5), and a pull rod (6). The clamp bracket (2) is mounted on the tilting table (1) and has a vertical mounting plate (7). The positioning shaft (4) is located in the middle of the vertical mounting plate (7). The support base (3) is mounted on the clamp bracket (2) and is coaxially arranged with the positioning shaft (4). The front end of the positioning shaft (4) is tapered, and the expansion sleeve (5) is fitted onto the tapered part. The pull rod (6) is movably disposed in the axial hole of the positioning shaft (4). The upper end of the pull rod (6) has a disc head that limits the expansion sleeve (5). The support base (3) has an annular support surface, and a diamond-shaped pin (8) is provided on the annular support surface.
2. The differential housing planetary bore machining fixture according to claim 1, characterized in that: The upper part of the expansion sleeve (5) has a flange, and the upper end of the pull rod (6) has an annular groove. The flange of the expansion sleeve (5) is limited within the annular groove.
3. The differential housing planetary bore machining fixture according to claim 1, characterized in that: The expansion sleeve (5) is composed of multiple parts. A spring hoop (9) is provided on the outer side of the expansion sleeve (5), and a limiting groove for the limiting spring hoop (9) is provided on the outer side of the expansion sleeve (5).
4. A differential housing planetary bore machining fixture according to claim 1, characterized in that: A cylinder (10) is provided on the clamp bracket (2), and the piston rod of the cylinder (10) is connected to the rear end of the pull rod (6).