Machining tool for inner spherical surface of differential shell for automobile

Abstract

The utility model discloses an automobile differential shell inner spherical surface machining tool, which relates to the technical field of differential shell machining and comprises a frame, supporting legs are uniformly and fixedly connected to four corners of the bottom end of the frame, and a polishing mechanism is fixedly mounted at the top end of the frame. A rotary clamping mechanism is arranged at the position, located on one side of the grinding mechanism, of the top end of the rack, and an air blowing mechanism is arranged on one side of the rack. According to the machining tool for the inner spherical surface of the differential shell for the automobile, the position of the clamping block can be accurately controlled through the rotary clamping mechanism under the cooperation of the threaded rod and the sliding block, stable clamping of the outer surface of the differential shell is achieved, and by means of the clamping mode, the machining efficiency is greatly improved. The differential mechanism shell can be kept in a stable fixed state during inner ball grinding operation, a workpiece is prevented from loosening or shifting, the grinding precision and the surface quality are improved, differential mechanism shells of different specifications can be effectively clamped through adjustability of the clamping blocks, and the operation flexibility and the working efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of differential housing processing technology, and in particular to a tooling for machining the inner spherical surface of an automotive differential housing. Background Technology

[0002] The differential housing is an important component of the automotive differential. It supports key components such as planetary gears and half-shaft gears, and enables the differential rotation of the two wheels through these components. The inner spherical surface is a critical part of the differential housing. The inner spherical surface of the differential housing plays a supporting and power transmission role in the differential. Its machining accuracy and coaxiality directly affect the smoothness of the differential's operation and its service life.

[0003] The existing processing fixtures mainly include a frame, a grinding mechanism, and support legs. During use, the speed reducer housing is fixed manually using relevant clamping components, and then the grinding mechanism performs the grinding operation. However, in actual use, it is impossible to clamp and fix speed reducer housings of different sizes. Furthermore, during the grinding process, it is necessary to manually clean the internal grinding debris continuously, which reduces the processing efficiency.

[0004] Therefore, a tooling for machining the inner spherical surface of an automotive differential housing is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as the inability to clamp and fix differential housings of different sizes during practical use, and the need for manual cleaning of internal grinding debris during the grinding process, which leads to issues with processing efficiency, a new tooling for machining the inner spherical surface of automotive differential housings is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a spherical machining fixture for an automotive differential housing, including a frame, with support legs fixedly connected to the four corners of the bottom end of the frame, a grinding mechanism fixedly installed at the top end of the frame, a rotating clamping mechanism provided on one side of the grinding mechanism at the top end of the frame, and a blower mechanism provided on one side of the frame. The rotating clamping mechanism includes a rectangular groove opened at the top end of the frame, a rotating shaft rotatably connected to the inner surface of the rectangular groove, a rectangular plate fixedly connected to the outer surface of the rotating shaft, two sliders slidably connected to the inner surface of the rectangular plate, and a threaded rod rotatably connected to the inner surface of the rectangular plate. The threaded rod is threadedly connected to the slider, and the threads on the outer surface of the threaded rod are symmetrically and oppositely distributed. A clamping block is fixedly connected to the top end of each of the two sliders.

[0007] Preferably, a fixing plate is fixedly connected to the inner surface of the frame, a cylinder is fixedly connected to one side of the fixing plate, a rack is fixedly connected to one end of the cylinder, and two gears that mesh with the rack are fixedly connected to the outer surface of the rotating shaft.

[0008] Preferably, the inner surface of the fixing plate has two limiting grooves, and the inner surfaces of the two tooth limiting grooves are slidably connected with limiting blocks that are fixedly connected to the bottom end of the rack.

[0009] Preferably, a plurality of rubber strips are fixedly connected to the sides of the two clamping blocks that are close to each other, and the plurality of rubber strips are linearly and equidistantly distributed.

[0010] Preferably, the top of the rectangular plate is fixedly connected to a protective cloth that is fixedly connected to one side of the inner surface of the rectangular groove, and the protective cloth is a soft elastic material.

[0011] Preferably, the blower mechanism includes a circular hole cover fixedly connected to one side of the frame, a rotating rod rotatably connected to the inner surface of the circular hole cover, a motor fixedly connected to one end of the rotating rod and fixedly connected to one side of the circular hole cover, fan blades fixedly connected to the outer surface of the rotating rod, and a connecting pipe fixedly connected to the inner surface of the circular hole cover.

[0012] Preferably, a retainer is fixedly connected to the inner surface of the circular hole cover, and the inner surface of the retainer is rotatably connected to the outer surface of the rotating rod.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. This utility model provides a tooling for machining the inner spherical surface of an automotive differential housing. Through a rotating clamping mechanism, using a threaded rod and a slider design, the position of the clamping block can be precisely controlled to achieve a stable clamping of the outer surface of the differential housing. The symmetrical reverse thread design on the outer surface of the threaded rod ensures uniform movement of the clamping block, thereby avoiding uneven distribution of clamping force. With this clamping method, the differential housing can maintain a stable fixed state during the inner ball grinding operation, preventing the workpiece from loosening or shifting, thereby improving grinding accuracy and surface quality. The adjustability of the clamping block allows differential housings of different specifications to be effectively clamped, improving operational flexibility and work efficiency.

[0015] 2. This utility model provides a tooling for machining the inner spherical surface of an automotive differential housing. During grinding operations on the inner surface of the differential housing using a blower mechanism, the output of a starter motor drives a rotating rod via a coupling. This causes the fan blades to rotate, drawing air into the circular cover through a circular hole. The air is then blown out through a connecting pipe, cleaning away debris generated during grinding. This prevents debris from accumulating inside the differential housing, which could affect grinding quality. The debris cleaning method prevents debris buildup inside the differential housing, avoiding interference with grinding quality and ensuring a smooth grinding process. Maintaining a clean working environment also helps improve grinding precision and surface quality, reducing machining errors caused by debris residue. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rectangular groove structure of this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the rotary clamping mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the limiting groove structure of this utility model;

[0020] Figure 5 This is a schematic cross-sectional view of the blower mechanism of this utility model.

[0021] In the diagram: 1. Frame; 2. Support leg; 3. Grinding mechanism; 4. Rotary clamping mechanism; 41. Rectangular groove; 42. Rotating shaft; 43. Rectangular plate; 44. Rubber strip; 45. Slider; 46. Threaded rod; 47. Clamping block; 48. Fixing plate; 49. Cylinder; 410. Rack; 411. Gear; 412. Limiting groove; 413. Limiting block; 414. Protective cloth; 5. Blowing mechanism; 51. Round hole cover; 52. Rotating rod; 53. Fan blade; 54. Motor; 55. Connecting pipe; 56. Cage. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Specific implementation examples are given below.

[0024] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a tooling for machining the inner spherical surface of an automotive differential housing, including a frame 1. Support legs 2 are fixedly connected to the four corners of the bottom end of the frame 1. A grinding mechanism 3 is fixedly installed at the top end of the frame 1. A rotating clamping mechanism 4 is provided on one side of the grinding mechanism 3 at the top end of the frame 1. A blower mechanism 5 is provided on one side of the frame 1. The rotating clamping mechanism 4 includes a rectangular groove 41 formed at the top end of the frame 1. A rotating shaft 42 is rotatably connected to the inner surface of the rectangular groove 41. The outer surface of the rotating shaft 42... A rectangular plate 43 is fixedly connected. Two sliders 45 are slidably connected to the inner surface of the rectangular plate 43. A threaded rod 46 is rotatably connected to the inner surface of the rectangular plate 43. The threaded rod 46 is threadedly connected to the sliders 45. The threads on the outer surface of the threaded rod 46 are symmetrically and oppositely distributed. A clamping block 47 is fixedly connected to the top of each slider 45. A protective cloth 414 is fixedly connected to the top of the rectangular plate 43 and is fixedly connected to one side of the inner surface of the rectangular groove 41. The protective cloth 414 is made of soft elastic material and is used when it is necessary to clamp the differential housing. At this point, the differential housing is placed between the two clamping blocks 47. Then, by rotating the handle at one end of the threaded rod 46, due to the symmetrical and opposite distribution of the threads on the outer surface of the threaded rod 46, the two sliders 45 slide towards each other on the inner surface of the rectangular plate 43 under the action of the threaded connection, thereby driving the two clamping blocks 47 to move. This allows the clamping blocks 47 to fix the outer surface of the differential housing. Through the cooperative design of the threaded rod 46 and the sliders 45, the position of the clamping blocks 47 can be precisely controlled to achieve a stable clamping of the outer surface of the differential housing. The symmetrical and opposite thread design on the outer surface of the threaded rod 46 ensures the uniform movement of the clamping blocks 47, thereby avoiding uneven distribution of clamping force. Through this clamping method, the differential housing can maintain a stable fixed state during internal ball grinding, preventing the workpiece from loosening or shifting, thereby improving grinding accuracy and surface quality. The adjustability of the clamping blocks 47 allows differential housings of different specifications to be effectively clamped, improving operational flexibility and work efficiency.

[0025] The grinding mechanism 3 mentioned above is a mature grinding technology and equipment for the inner surface of the differential housing in the prior art. In this solution, it is used to grind the inner surface of the differential housing. Its internal structure, principle and connection method will not be described further.

[0026] like Figure 4As shown, a fixing plate 48 is fixedly connected to the inner surface of the frame 1. A cylinder 49 is fixedly connected to one side of the fixing plate 48. A rack 410 is fixedly connected to one end of the cylinder 49. Two gears 411 that mesh with the rack 410 are fixedly connected to the outer surface of the rotating shaft 42. When it is necessary to rotate the fixed differential housing by 90 degrees, the cylinder 49 is started, which pushes the rack 410 to move. Under the action of meshing, the gears 411 rotate 90 degrees, thereby driving the rotating shaft 42 to rotate 90 degrees, so as to rotate the fixed differential housing by 90 degrees, which facilitates subsequent processing operations.

[0027] The cylinder 49 mentioned above is a mature driving means and device in the existing technology. In this solution, it is used to provide a power source. Its internal structure, connection method and principle will not be described.

[0028] like Figure 4 As shown, the inner surface of the fixing plate 48 has two limiting grooves 412. The inner surfaces of the two tooth limiting grooves 412 are slidably connected to limiting blocks 413 that are fixedly connected to the bottom end of the rack 410. During the movement of the rack 410, the limiting blocks 413 will slide on the inner surface of the limiting grooves 412 to limit the position of the rack 410 and prevent it from deviating from the set position during the meshing movement.

[0029] like Figure 3 As shown, several rubber strips 44 are fixedly connected to the side of the two clamping blocks 47 that are close to each other. The rubber strips 44 are distributed linearly and at equal distances. The rubber strips 44 can increase the friction between the clamping blocks 47 and the outer surface of the differential housing, and can avoid direct contact between the clamping blocks 47 and the differential housing, thus protecting the outer surface of the differential housing.

[0030] like Figure 5As shown, the blower mechanism 5 includes a circular hole cover 51 fixedly connected to one side of the frame 1. A rotating rod 52 is rotatably connected to the inner surface of the circular hole cover 51. A motor 54 fixedly connected to one end of the rotating rod 52 and fixedly connected to one side of the circular hole cover 51 is fixedly connected to one end of the rotating rod 52. A fan blade 53 is fixedly connected to the outer surface of the rotating rod 52. A connecting pipe 55 is fixedly connected to the inner surface of the circular hole cover 51. A retainer 56 is fixedly connected to the inner surface of the circular hole cover 51. The inner surface of the retainer 56 is rotatably connected to the outer surface of the rotating rod 52. During the grinding operation on the inner surface of the differential housing, the output end of the starting motor 54 drives the rotating rod 52 to rotate through the coupling, causing the fan blade 53 to rotate and draw air into the circular hole cover 51 through the circular hole. The air is then blown out through the connecting pipe 55 to clean up the debris generated during the grinding process. This prevents debris from accumulating inside the differential housing, which would affect the grinding quality. The debris cleaning method can prevent debris from accumulating inside the differential housing, avoid affecting the grinding quality due to debris interference, and ensure the smooth progress of the grinding process. At the same time, maintaining a clean working environment helps improve the precision and surface quality of grinding, and reduces processing errors caused by debris residue.

[0031] The working principle of this utility model is as follows: When it is necessary to clamp the differential housing, the differential housing is placed between two clamping blocks 47. Then, by rotating the handle at one end of the threaded rod 46, the threads on the outer surface of the threaded rod 46 are symmetrically and oppositely distributed. Under the action of the threaded connection, the two sliders 45 slide towards each other on the inner surface of the rectangular plate 43, thereby driving the two clamping blocks 47 to move. This allows the clamping blocks 47 to fix the outer surface of the differential housing. After fixing, the differential housing can be flipped over. At 90 degrees, the cylinder 49 is activated, causing it to push the rack 410 to move. During the movement, the rack 410 drives the limiting block 413 to slide on the inner surface of the limiting groove 412, thus limiting the position of the rack 410. Under the action of meshing, the gear 411 rotates 90 degrees, which in turn drives the rotating shaft 42 to rotate 90 degrees, thereby rotating the fixed differential housing by 90 degrees to facilitate subsequent processing. Then, the inner surface of the differential housing is polished by the polishing mechanism 3.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An inner spherical surface machining tool for a differential housing of an automobile, comprising a frame (1), characterized in that: The bottom end of the rack (1) is uniformly fixedly connected with support legs (2), the top end of the rack (1) is fixedly installed with a polishing mechanism (3), one side of the top end of the rack (1) is provided with a rotary clamping mechanism (4) on the polishing mechanism (3), one side of the rack (1) is provided with a blowing mechanism (5), the rotary clamping mechanism (4) comprises a rectangular groove (41) opened in the top end of the rack (1), the inner surface of the rectangular groove (41) is rotatably connected with a rotating shaft (42), the outer surface of the rotating shaft (42) is fixedly connected with a rectangular plate (43), the inner surface of the rectangular plate (43) is slidably connected with two sliding blocks (45), the inner surface of the rectangular plate (43) is rotatably connected with a threaded rod (46), the threaded rod (46) is threadedly connected with the sliding blocks (45), the threads on the outer surface of the threaded rod (46) are symmetrically and oppositely distributed, and the top ends of the two sliding blocks (45) are fixedly connected with clamping blocks (47).

2. The differential housing inner spherical surface machining tool for an automobile according to claim 1, characterized in that: The inner surface of the rack (1) is fixedly connected with a fixed plate (48), one side of the fixed plate (48) is fixedly connected with an air cylinder (49), one end of the air cylinder (49) is fixedly connected with a rack (410), and the outer surface of the rotating shaft (42) is fixedly connected with two gears (411) meshedly connected with the rack (410).

3. The differential case inner spherical surface machining tool for an automobile according to claim 2, characterized in that: The inner surface of the fixed plate (48) is provided with two limiting grooves (412), and the inner surfaces of the two limiting grooves (412) are slidably connected with limiting blocks (413) fixedly connected with the bottom end of the rack (410).

4. The differential case inner spherical surface machining tool for an automobile according to claim 1, characterized in that: The sides of the two clamping blocks (47) close to each other are fixedly connected with a plurality of rubber strips (44), and the plurality of rubber strips (44) are linearly and equidistantly distributed.

5. The differential case inner spherical surface machining tool for an automobile according to claim 1, characterized in that: The top end of the rectangular plate (43) is fixedly connected with a protective cloth (414) fixedly connected with one side of the inner surface of the rectangular groove (41), and the protective cloth (414) is made of soft elastic material.

6. The differential case inner spherical surface machining tool for an automobile according to claim 1, characterized in that: The blowing mechanism (5) comprises a circular hole cover (51) fixedly connected with one side of the rack (1), the inner surface of the circular hole cover (51) is rotatably connected with a rotating rod (52), one end of the rotating rod (52) is fixedly connected with a motor (54) fixedly connected with one side of the circular hole cover (51), the outer surface of the rotating rod (52) is fixedly connected with a fan blade (53), and the inner surface of the circular hole cover (51) is fixedly connected with a communication pipe (55).

7. The differential case inner spherical surface machining tool for an automobile according to claim 6, characterized in that: The inner surface of the circular hole cover (51) is fixedly connected with a retainer (56), and the inner surface of the retainer (56) is rotatably connected with the outer surface of the rotating rod (52).

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