Differential shell grinding automatic clamp

Abstract

The utility model relates to the technical field of automatic machining, in particular to an automatic clamp for grinding a differential shell. A chuck is mounted on the base, a guide seat is mounted at the center of the chuck, a first linear bearing is sleeved on the guide seat, and a guide centering part is mounted on the first linear bearing; a guide slide way is arranged in the guide seat, an annular limiting block is arranged in the guide slide way, a first guide screw is sleeved with the limiting block, a nut is installed at the top of the first guide screw and located above the guide centering part, and a first spring is sleeved with the first guide screw and located between the limiting block and the guide centering part. When the differential shell is clamped, the differential shell is firstly placed on the guide centering part to achieve primary positioning of the differential shell, the first spring is compressed under the action of the gravity of the differential shell, the differential shell descends along with the guide centering part, after the differential shell reaches the position, the chuck clamping jaw is closed to achieve automatic clamping of the differential shell, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automated processing. Background Art

[0002] The differential housing usually refers to the differential case, which is an important component in the automotive transmission system. It is mainly used to connect the drive shaft and the wheels, allowing the wheels to rotate at different speeds.

[0003] The differential housing has a special shape, with an overall structure that is wider at the top and narrower at the bottom. Generally, it is formed by casting. After forming, there will be some defects such as flash, burrs, and pouring gates on the part, which need to be removed before processing. Due to different casting processes, the positions and remaining amounts of flash and burrs are different. Due to its special shape, it is not easy to clamp. Previously, manual grinding was used. Grinding the workpiece surface manually in large quantities will result in various marks and the efficiency cannot guarantee the supply. Therefore, the equipment requires a multi-station fixture to improve production efficiency. Summary of the Utility Model

[0004] In order to solve the technical problem that the differential housing in the prior art is not easy to clamp, the utility model provides an automatic fixture for grinding the differential housing.

[0005] The technical solution adopted by the utility model to achieve the above object is as follows:

[0006] An automatic fixture for grinding the differential housing, a chuck 6 is installed on a base 1, a guide seat 25 is installed at the center of the chuck 6, a first linear bearing 23 is sleeved on the guide seat 25, and a guide centering 20 is installed on the first linear bearing 23; a guide slideway 26 is provided in the guide seat 25, a ring-shaped limit block 27 is provided in the guide slideway 26, a first guide screw 24 is sleeved in the limit block 27, a nut 21 is installed at the top of the first guide screw 24 and above the guide centering 20, and a first spring 22 is sleeved on the first guide screw 24 between the limit block 27 and the guide centering 20.

[0007] Support rods 19 are installed circumferentially on the chuck body 31 of the chuck 6 between adjacent chuck jaws 16.

[0008] A support seat 15 is installed on the chuck 6, a guide sleeve 8 is installed horizontally on the support seat 15, a second linear bearing 12 is installed in the guide sleeve 8, a guide rod 14 is installed in the second linear bearing 12, a second guide screw 11 is installed at the end of the guide rod 14, and a second spring 13 is sleeved on the second guide screw 11 between the guide sleeve 8 and the guide rod 14.

[0009] A protrusion 28 is provided at the top edge of the guide centering 20.

[0010] A connection disk 9 is installed at the end of the guide sleeve 8 and outside the second guide screw 11.

[0011] A spacer block 7 and a backing plate 18 are installed on the chuck 6, a support base 15 is installed on the spacer block 7, and a support rod 19 is installed on the backing plate 18.

[0012] The backing plate 18 is installed circumferentially on the chuck body 31 of the chuck 6 between adjacent chuck jaws 16. The bottom of the support rod 19 is provided with a mounting plate 30, and the mounting plate 30 is installed on the backing plate 18 by screws 29.

[0013] A limit plate 17 is installed on the base 1 through bolts 5, and the chuck 6 is installed on the limit plate 17.

[0014] A protective cover 2 is installed on the base 1 below the guide sleeve 8 and the connecting plate 9.

[0015] A round washer 3 and a spring washer 4 are installed on the bolt 5 above the limit plate.

[0016] The advantages of the present utility model compared with the prior art are as follows:

[0017] First, the differential case is placed on the guiding centering to achieve preliminary positioning of the differential case. Under the action of the gravity of the differential case, the first spring is compressed, and the differential case follows the guiding centering and descends. After reaching the position, the chuck jaws close to achieve automatic clamping of the differential case, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structure diagram of an automatic fixture for grinding a differential case of the present utility model.

[0019] Figure 2 is a front view of an automatic fixture for grinding a differential case of the present utility model.

[0020] Figure 3 is an automatic fixture for grinding a differential case of the present utility model Figure 2 cross-sectional view taken along line A - A.

[0021] Figure 4 is an automatic fixture for grinding a differential case of the present utility model Figure 3 partial enlarged view of B in.

[0022] Figure 5 is a top view of an automatic fixture for grinding a differential case of the present utility model.

[0023] In the figure: 1, base; 2, protective cover; 3, round pad; 4, spring washer; 5, bolt; 6, chuck; 7, spacer block; 8, guide sleeve; 9, connecting plate; 10, fixing screw; 11, second guide screw; 12, second linear bearing; 13, second spring; 14, guide rod; 15, support seat; 16, chuck jaw; 17, limit plate; 18, backing plate; 19, support rod; 20, guiding and centering; 21, nut; 22, first spring; 23, first linear bearing; 24, first guide screw; 25, guide seat; 26, guide slideway; 27, limit block; 28, protrusion; 29, screw; 30, mounting plate; 31, chuck body. Detailed implementation manner

[0024] An automatic fixture for differential housing grinding provided by the present utility model, as Figures 1-5 shown, a chuck 6 is installed on a base 1. A support rod 19 is installed between adjacent chuck jaws 16 in the circumferential direction of a chuck body 31 of the chuck 6 through a backing plate 18. A mounting plate 30 is provided at the bottom of the support rod 19, and the mounting plate 30 is installed on the backing plate 18 through a screw 29. A guide seat 25 is installed at the center of the chuck 6. A first linear bearing 23 is sleeved on the guide seat 25, and a guiding and centering 20 is installed on the first linear bearing 23. A guide slideway 26 is provided in the guide seat 25. An annular limit block 27 is provided in the guide slideway 26. A first guide screw 24 is sleeved in the limit block 27. A nut 21 is installed at the top of the first guide screw 24 and above the guiding and centering 20. A first spring 22 is sleeved on the first guide screw 24 between the limit block 27 and the guiding and centering 20. A protrusion 28 is provided at the top edge of the guiding and centering 20.

[0025] A support seat 15 is installed on the chuck 6 through a spacer block 7. A guide sleeve 8 is horizontally installed on the support seat 15. A second linear bearing 12 is installed in the guide sleeve 8. A guide rod 14 is installed in the second linear bearing 12. A second guide screw 11 is installed at the end of the guide rod 14. A second spring 13 is sleeved on the second guide screw 11 between the guide sleeve 8 and the guide rod 14. A connecting plate 9 is installed at the end of the guide sleeve 8 and outside the second guide screw 11. The second guide screw 11 is protected through the connecting plate 9 to avoid accidental contact. A protective cover 2 is installed on the base 1 below the guide sleeve 8 and the connecting plate 9 to avoid the connecting plate 9 touching an obstacle in the longitudinal space. A limit plate 17 is installed on the base 1 through a bolt 5. The chuck 6 is installed on the limit plate 17. The limit plate 17 is limited through the bolt 5 to avoid displacement of the limit plate 17. A round pad 3 and a spring washer 4 are installed on the bolt 5 above the limit plate.

[0026] Working principle: First, place the bottom of the differential case on the guiding centering 20. The guiding centering 20 limits the bottom of the differential case through the protrusion 28. The guiding centering 20 descends under the action of the differential case, compressing the first spring 22, which plays a buffering role in the descent of the differential case. Subsequently, the differential case falls onto the support rod 19, and the support rod 19 provides support for the differential case. Then, the chuck jaws 16 clamp the differential case. At the same time, the guiding rod 14 abuts against the side wall of the differential case under the action of the second spring 13. The guiding rod 14, the support rod 19, the chuck jaws 16, and the guiding centering 20 fit the shape of the differential case to clamp it, resulting in a better clamping effect.

[0027] The present utility model is described through embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of the present utility model.

Claims

1. An automatic fixture for differential case grinding, characterized in that, A chuck (6) is installed on a base (1). A guide seat (25) is installed at the center of the chuck (6). A first linear bearing (23) is sleeved on the guide seat (25). A guide centering (20) is installed on the first linear bearing (23). A guide slideway (26) is provided in the guide seat (25). An annular limit block (27) is provided in the guide slideway (26). A first guide screw (24) is sleeved in the limit block (27). A nut (21) is installed at the top of the first guide screw (24) and above the guide centering (20). A first spring (22) is sleeved on the first guide screw (24) between the limit block (27) and the guide centering (20).

2. The automatic fixture for differential case grinding according to claim 1, characterized in that, A support rod (19) is installed circumferentially between adjacent chuck jaws (16) on the chuck body (31) of the chuck (6).

3. The automatic fixture for differential case grinding according to claim 1, characterized in that, A support seat (15) is installed on the chuck (6). A guide sleeve (8) is installed horizontally on the support seat (15). A second linear bearing (12) is installed in the guide sleeve (8). A guide rod (14) is installed in the second linear bearing (12). A second guide screw (11) is installed at the end of the guide rod (14). A second spring (13) is sleeved on the second guide screw (11) between the guide sleeve (8) and the guide rod (14).

4. The automatic fixture for differential case grinding according to claim 1, characterized in that, A protrusion (28) is provided at the top edge of the guide centering (20).

5. The automatic fixture for differential case grinding according to claim 3, wherein A connection plate (9) is installed at the end of the guide sleeve (8) and outside the second guide screw (11).

6. The automatic fixture for differential case grinding according to claim 3, wherein A spacer block (7) and a backing plate (18) are installed on the chuck (6). The support seat (15) is installed on the spacer block (7), and the support rod (19) is installed on the backing plate (18).

7. The automatic fixture for differential case grinding according to claim 2, wherein A backing plate (18) is installed circumferentially between adjacent chuck jaws (16) on the chuck body (31) of the chuck (6). The bottom of the support rod (19) is provided with a mounting plate (30). The mounting plate (30) is installed on the backing plate (18) by screws (29).

8. An automatic fixture for differential case grinding according to claim 1, characterized in that, A limit plate (17) is installed on the base (1) by bolts (5). The chuck (6) is installed on the limit plate (17).

9. The automatic fixture for differential case grinding according to claim 5, wherein A protective cover (2) is installed on the base (1) below the guide sleeve (8) and the connection plate (9).

10. The automatic fixture for differential case grinding according to claim 8, characterized in that, A round washer (3) and a spring washer (4) are installed on the bolt (5) above the limit plate.

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