Split differential housing positioning and machining device

Abstract

A split differential housing positioning and machining device, comprising a base and a fixed support part and an adjusting support part arranged thereon, the fixed support part comprises a first support frame provided with a first arc-shaped support surface; the adjusting support part comprises a second support frame provided with a second arc-shaped support surface, the axis of the second arc-shaped support surface is coaxial with the corresponding axis of the first arc-shaped support surface, and the first arc-shaped support surface and the second arc-shaped support surface form a support part supporting both end bearing tables of the split differential housing; the lower part of the second support frame is slidably connected with the base, and the sliding direction is the axis direction of the second arc-shaped support surface; the first support frame and the second support frame are connected through at least two groups of connecting units, and the connecting units pass through the flange connecting holes. The utility model is suitable for batch production, can carry out finishing machining on the shaft hole of the same type split differential housing after mold closing, has high repeated positioning precision, and is particularly suitable for application in scenes such as large-scale standardized machining of automobile parts.

Description

Technical Field

[0001] This utility model relates to the field of differential housing technology, specifically a split differential housing positioning and processing device. Background Technology

[0002] Split differential housings are typically manufactured using a segmented machining process, which involves rough machining of the separate housings, followed by mold assembly, and finally finish machining of key features (such as bearing holes and flange faces). However, existing technologies have many limitations in practical applications, affecting machining accuracy and efficiency.

[0003] First, the bearing holes on opposite sides of the differential housing are often designed asymmetrically to accommodate different load distributions and assembly requirements. This structural difference makes it difficult for traditional clamping devices (such as V-blocks and three-jaw chucks) to achieve stable clamping, resulting in inconsistent positioning references during machining and affecting the coaxiality and dimensional accuracy of the bearing holes. Furthermore, the complex structure and irregular shape of the split differential housing make it difficult for traditional clamping methods to apply force evenly, easily causing vibration or deformation during machining, further reducing machining quality. Utility Model Content

[0004] To address the technical problems mentioned above, this utility model provides a positioning and machining device for a split differential housing, which can adapt to the complex structure of the split differential housing, provide uniform clamping force, and ensure high-precision machining.

[0005] The technical solution of this utility model is as follows: A split differential housing positioning and machining device includes a base and a fixed support part and an adjustable support part disposed thereon. The fixed support part includes a first support frame and the first support frame is provided with a first arc-shaped support surface. The adjustment support includes a second support frame, which has a second arc-shaped support surface. The second arc-shaped support surface is coaxial with the axis corresponding to the first arc-shaped support surface. The first arc-shaped support surface and the second arc-shaped support surface form a support for the bearing platforms at both ends of the split differential housing. The lower part of the second support frame is slidably connected to the base, and the sliding direction is the axial direction of the second arc-shaped support surface. The first support frame and the second support frame are connected by at least two sets of connecting units. Both the first support frame and the second support frame are provided with corresponding through holes. The connecting units are sequentially inserted through the through holes and the flange connecting holes of the split differential housing.

[0006] The positioning and machining device of this utility model is used to clamp and fix the split differential housing of the same model. The split differential housing includes two detachably connected half housings. Each half housing has a number of corresponding flange connection holes. The number of flange connection holes is even and they are arranged at equal intervals. The two connecting units are arranged diagonally or side by side on the corresponding flange connection holes.

[0007] The specific structures of the first support frame and the second support frame are as follows: the first support frame includes an integrally formed first arc-shaped support plate and two first vertical support plates disposed at its upper end; the first arc-shaped support surface is disposed on the first arc-shaped support plate. The second support frame includes an integrally formed second arc-shaped support plate and two second vertical support plates disposed at its upper end, with the second arc-shaped support surface disposed on the second arc-shaped support plate.

[0008] To facilitate further connection between the upper parts of the fixed support and the adjustable support and improve the stability of clamping the split differential housing, a reinforcing rod is rotatably provided on the upper part of the second vertical support plate, and threaded connection holes are provided at the upper ends of the two first vertical support plates. The reinforcing rod is detachably connected to one of the threaded connection holes through a connector.

[0009] Furthermore, the reinforcing rod has an elongated hole along its length, and the connector passes through the elongated hole.

[0010] To facilitate the connection of a single reinforcing rod to two first vertical support plates, the length of the reinforcing rod is greater than the maximum distance between the first and second vertical support plates arranged diagonally on the same horizontal plane.

[0011] Furthermore, both threaded connection holes are located within the rotation trajectory of the elongated hole.

[0012] Preferably, the bottom of the second arc-shaped support plate is provided with a base plate with a flat bottom surface. A guide plate is provided on the side of the base plate away from the fixed support part. The bottom surface of the guide plate is lower than the bottom surface of the base plate, and the lower part of the guide plate slides in the groove opened in the base.

[0013] To facilitate the placement of the split differential housing on the fixed support and the adjustable support, the adjustable support can be quickly adjusted to the appropriate position according to the position of the two bearing seats of the split differential housing. The side of the guide plate away from the fixed support is elastically connected to the inner wall of the slide groove through a return spring, and the length direction of the return spring is consistent with the sliding direction of the guide plate.

[0014] The specific structure of the connecting unit is as follows: the connecting unit includes an extended bolt, and the extended bolt is provided with multiple nuts, with at least two nuts connected to both sides of the corresponding flange connecting hole.

[0015] The beneficial effects of this utility model are as follows: 1. By coaxially engaging the first and second arc-shaped support surfaces, the bearing seats at both ends of the differential housing are precisely supported, ensuring the coaxiality of the bearing holes during machining and avoiding the skewing problem caused by unilateral clamping in traditional fixtures. Two sets of diagonally / side-by-side connecting units pass through the flange connection holes, which can evenly distribute the clamping force, prevent the shell from deforming, and improve the machining accuracy. 2. The adjustment support adopts a sliding joint design, which automatically adjusts the position through a return spring to adapt to different sizes of split differential housings, reducing manual calibration time; 3. The reinforcing rod and elongated hole structure allow for flexible connection of threaded connection holes in different positions, adapting to various distribution forms of flange connection holes, enhancing versatility. It can be used to connect the first vertical support rod and the second vertical support rod diagonally with one reinforcing rod, or two reinforcing rods can be used to connect the two corresponding first vertical support rods respectively, further improving the stability of clamping the split differential housing. 4. The integrally formed arc-shaped support plate and vertical support plate can improve the overall rigidity, resist cutting vibration, and avoid surface roughness deterioration caused by machining chatter.

[0016] 5. The spring return connection between the guide plate and the slide groove can form an elastic preload after clamping, further suppressing micro-displacement during the processing. 6. The extended bolt and multi-nut locking design allows for further threaded connection and fixation of the two half-shells; 7. The positioning and machining device of this utility model is suitable for mass production. It can perform precision machining on the shaft hole of the same model of split differential housing after mold closing. It has high repeatability and positioning accuracy, and is particularly suitable for applications such as large-scale standardized processing of automotive parts. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a structural diagram; Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a top view; Figure 4 Left view; Figure 5 This is a schematic diagram of the reinforcing bar structure; Figure 6 Here are schematic diagrams of the first and second support frames; The components represented by the various reference numerals in the diagram are: 1. Split differential housing; 101. First half-housing; 102. Second half-housing; 103. Flange connection hole; 2. Base; 201. Slide groove; 3. First support frame; 301. First arc-shaped support plate; 3011. First arc-shaped support surface; 302. First vertical support plate; 3021. Threaded connection hole; 303. First through hole; 4. Second support frame; 401. Second arc-shaped support plate; 4011. Second arc-shaped support surface; 402. Second vertical support plate; 403. Base plate; 404. Guide plate; 405. Second through hole; 5. Reinforcing rod; 501. Elongated hole; 502. Rotating shaft; 6. Connecting piece; 7. Return spring; 8. Extended bolt; 9. Nut. Detailed Implementation

[0018] See Figure 1 As shown, a split differential housing positioning and processing device includes a base 2 and a fixed support part and an adjustable support part disposed thereon. The fixed support part includes a first support frame 3, and the first support frame 3 is provided with a first arc-shaped support surface 3011.

[0019] Among them, see Figure 3 , Figure 4 and Figure 6 As shown, the adjustment support includes a second support frame 4, which has a second arc-shaped support surface 4011. The second arc-shaped support surface 4011 is coaxial with the axis corresponding to the first arc-shaped support surface 3011. The first arc-shaped support surface 3011 and the second arc-shaped support surface 4011 form a support for the bearing platforms at both ends of the split differential housing 1. The lower part of the second support frame 4 is slidably connected to the base 2, and the sliding direction is the axial direction of the second arc-shaped support surface 4011.

[0020] The positioning and processing device of this utility model is used to clamp and fix the split differential housing 1 of the same model. The split differential housing 1 includes two detachably connected half housings, namely the first half housing 101 and the second half housing 102. Both half housings are provided with a plurality of corresponding flange connection holes 103. The plurality of flange connection holes 103 are even in number and are arranged at equal intervals.

[0021] See Figure 6As shown, the first support frame 3 and the second support frame 4 are connected by at least two sets of connecting units. Both the first support frame 3 and the second support frame 4 have corresponding through holes. The connecting units pass through the through holes and the flange connection holes 103 of the split differential housing 1 in sequence. The through holes in the first support frame 3 are first through holes 303, and there are multiple first through holes 303. The through holes in the second support frame 4 are second through holes 405, and there are multiple second through holes 405. The second through holes 405 are corresponding to the first through holes 303, so that the connecting units can pass through the first through holes 303, the flange connection holes 103 and the second through holes 405 in sequence to realize the connection between the first support frame 3, the second support frame 4 and the split differential.

[0022] The connecting unit includes an extension bolt 8, which is provided with multiple nuts 9. At least two nuts 9 are connected to both sides of the corresponding flange connection hole 103. The extension bolt 8 can be inserted into the flange connection hole 103 corresponding to the two half-shells and fixed by the nuts 9. This allows the fixed support, the adjustable support and the split differential housing 1 to be clamped together by two connecting units arranged diagonally or side by side, thereby achieving stable clamping of the split differential housing 1.

[0023] Two connecting units are arranged diagonally or side-by-side on the corresponding flange connecting holes 103. Specifically, before the two connecting units pass through the corresponding flange connecting holes 103, fastening bolts are inserted into the remaining flange connecting holes 103 without connecting units. The two half-shells are pre-molded using fastening bolts and nuts 9. The two sets of pre-reserved flange connecting holes 103, diagonally or side-by-side, are used to install the connecting units. The connecting units can both further fix the two half-shells together and clamp the molded split differential housing 1 between the fixed support and the adjusting support. The two sets of diagonally / side-by-side connecting units passing through the flange connecting holes 103 can evenly distribute the clamping force, prevent housing deformation, and improve machining accuracy.

[0024] The specific structures of the first support frame 3 and the second support frame 4 are as follows: The first support frame 3 includes an integrally formed first arc-shaped support plate 301 and two first vertical support plates 302 disposed at its upper end. A first arc-shaped support surface 3011 is disposed on the first arc-shaped support plate 301, and a plurality of first through holes 303 are distributed on the first arc-shaped support plate 301 and the first vertical support plates 302. The second support frame 4 includes an integrally formed second arc-shaped support plate 401 and two second vertical support plates 402 disposed at its upper end. A second arc-shaped support surface 4011 is disposed on the second arc-shaped support plate 401, and a plurality of second through holes 405 are distributed on the second arc-shaped support plate 401 and the second vertical support plates 402.

[0025] See Figure 2As shown, the bottom of the second arc-shaped support plate 401 is provided with a base plate 403 with a flat bottom surface. A guide plate 404 is provided on the side of the base plate 403 away from the fixed support part. The bottom surface of the guide plate 404 is lower than the bottom surface of the base plate 403. The lower part of the guide plate 404 slides in the slide groove 201 opened in the base 2. The sliding direction is the moving direction of the adjustment support part, and the adjustment support part moves linearly.

[0026] To facilitate the placement of the split differential housing 1 on the fixed support and the adjustable support, the adjustable support can be quickly adjusted to a suitable position according to the positions of the two bearing seats of the split differential housing 1. The side of the guide plate 404 away from the fixed support is elastically connected to the inner wall of the slide groove 201 via a return spring 7. The length direction of the return spring 7 is consistent with the sliding direction of the guide plate 404. The spring return connection between the guide plate 404 and the slide groove 201 can form an elastic preload after clamping, further suppressing micro-displacement during the machining process.

[0027] See Figure 3 and Figure 5 As shown, to facilitate further connection of the upper parts of the fixed support and the adjusting support, and to improve the stability of clamping the split differential housing 1, a reinforcing rod 5 is rotatably provided on the upper part of the second vertical support plate 402. Both upper ends of the two first vertical support plates 302 are provided with threaded connection holes 3021. The reinforcing rod 5 is detachably connected to one of the threaded connection holes 3021 via a connector 6. A rotating shaft 502 is provided at the lower part of one end of the reinforcing rod 5. The rotating shaft 502 has an inverted T-shaped cross-section. The upper part of the second vertical support plate 402 is provided with an inverted T-shaped groove adapted to the rotating shaft 502. The rotating shaft 502 is rotatably connected within the inverted T-shaped groove and will not detach from it.

[0028] To facilitate the connection of a single reinforcing rod 5 to two first vertical support plates 302 respectively, the length of the reinforcing rod 5 is greater than the maximum distance between the first vertical support plates 302 and the second vertical support plates 402 arranged diagonally in the same horizontal plane.

[0029] The reinforcing rod 5 has an elongated hole 501 along its length, and the connector 6 passes through the elongated hole 501. Both threaded connection holes 3021 are located within the rotation trajectory of the elongated hole 501.

[0030] The structure of the reinforcing rod 5 and the elongated hole 501 allows for flexible connection of threaded connection holes 3021 at different positions, adapting to various distribution forms of flange connection holes 103, enhancing versatility. It can be used to connect the first vertical support rod and the second vertical support rod diagonally with one reinforcing rod 5, or two reinforcing rods 5 can be used to connect the two corresponding first vertical support rods respectively, further improving the stability of clamping the split differential housing 1.

Claims

1. A split differential case positioning and machining apparatus, comprising: It includes a base (2) and a fixed support and an adjustable support provided thereon. The fixed support includes a first support frame (3) and the first support frame (3) is provided with a first arc-shaped support surface (3011). The adjustment support includes a second support frame (4), which has a second arc-shaped support surface (4011). The second arc-shaped support surface (4011) is coaxial with the axis corresponding to the first arc-shaped support surface (3011). The first arc-shaped support surface (3011) and the second arc-shaped support surface (4011) form a support for the bearing platforms at both ends of the split differential housing (1). The lower part of the second support frame (4) is slidably connected to the base (2), and the sliding direction is the axial direction of the second arc-shaped support surface (4011). The first support frame (3) and the second support frame (4) are connected by at least two sets of connecting units. The first support frame (3) and the second support frame (4) are provided with corresponding through holes. The connecting units are sequentially inserted through the through holes and the flange connection holes (103) of the split differential housing (1).

2. The split differential case positioning and machining device of claim 1, wherein, The split differential housing (1) includes two detachably connected half-housings. Each half-housing has a plurality of corresponding flange connection holes (103). The two connection units are arranged diagonally or side by side on the corresponding flange connection holes (103).

3. The split differential case positioning and machining device of claim 1, wherein, The first support frame (3) includes an integrally formed first arc-shaped support plate (301) and two first vertical support plates (302) disposed at its upper end, and the first arc-shaped support surface (3011) is disposed on the first arc-shaped support plate (301); The second support frame (4) includes an integrally formed second arc-shaped support plate (401) and two second vertical support plates (402) disposed on its upper end. The second arc-shaped support surface (4011) is disposed on the second arc-shaped support plate (401).

4. The split differential case positioning and machining device of claim 3, wherein, The upper part of the second vertical support plate (402) is provided with a reinforcing rod (5), and the upper ends of the two first vertical support plates (302) are provided with threaded connection holes (3021). The reinforcing rod (5) is detachably connected to one of the threaded connection holes (3021) through a connector (6).

5. The split differential case positioning and machining device of claim 4, wherein, The reinforcing rod (5) has an elongated hole (501) along its length, and the connector (6) passes through the elongated hole (501).

6. The split differential case positioning and machining device of claim 4, wherein, The length of the reinforcing rod (5) is greater than the maximum distance between the first vertical support plate (302) and the second vertical support plate (402) set diagonally on the same horizontal plane.

7. The split differential case positioning and machining device of claim 5, wherein, Both of the threaded connection holes (3021) are located within the rotation trajectory of the elongated hole (501).

8. The split differential case positioning and machining device of claim 3, wherein, The bottom of the second arc-shaped support plate (401) is provided with a base plate (403) with a flat bottom surface. A guide plate (404) is provided on the side of the base plate (403) away from the fixed support part. The bottom surface of the guide plate (404) is lower than the bottom surface of the base plate (403). The lower part of the guide plate (404) slides in the groove (201) opened in the base (2).

9. A split differential case positioning and machining device as in claim 8, wherein, The side of the guide plate (404) away from the fixed support is elastically connected to the inner wall of the slide groove (201) by a return spring (7), and the length direction of the return spring (7) is consistent with the sliding direction of the guide plate (404).

10. The split differential case positioning and machining device of claim 1, wherein, The connecting unit includes an extension bolt (8), on which a plurality of nuts (9) are provided, and at least two nuts (9) are connected to both sides of the corresponding flange connecting hole (103).

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