Half axle shell machining tooling
Patent Information
- Application Number
- CN202522086103.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-28
AI Technical Summary
传统的支撑与压紧方式多采用结构单一的固定支架配合压板螺栓结构，存在通用性差、不便于针对两端弧面进行支撑和固定，其次传统的压紧方式可能因受力不均导致工件在支撑或夹紧时不可靠，在加工过程中产生振动，影响加工精度和表面质量，从而影响后桥壳体的加工质量
1、本实用新型通过第一支撑机构与第二支撑机构分别对后桥壳体本体的两侧进行精准定位与承载，并结合独特的压紧件协同作用，极大提升了装夹的稳定性和可靠性。第一支撑机构的活动件通过第一弧形凹口卡接壳体一侧，第二支撑机构则利用第二弧形凹口承托另一侧法兰盘下端，形成了稳定、匹配的V形或弧形支撑，有效限制了工件的位移。随后，通过分别旋紧两组丝杆上的压紧螺母，驱动第一压板压紧一侧法兰盘上表面，第二压板压紧壳体另一侧上表面，实现了从上方对工件的可靠锁紧。这种多点多向的夹紧力与下方支撑机构的承托力相互配合，构成了一个受力均衡的固定系统，能有效抑制加工过程中的振动和变形，从而为高精度加工提供了保障，显著提高了孔系、端面等特征的加工质量。
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Figure CN224658745U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of half-shaft housing processing technology, specifically relating to a half-shaft housing processing tooling. Background Technology
[0002] Currently, in the machining process of automotive half-shaft housings, especially when machining their outer periphery, the rear axle housing has a multi-curved surface structure with flanges or connecting plates at both ends. It requires support and fixation before machining. Traditional support and clamping methods often use simple fixed brackets with pressure plate bolts, which suffer from poor versatility and are inconvenient for supporting and fixing the curved surfaces at both ends. Furthermore, traditional clamping methods may lead to unreliable support or clamping of the workpiece due to uneven force, causing vibration during machining and affecting machining accuracy and surface quality, thus impacting the machining quality of the rear axle housing. Therefore, this utility model proposes a rear axle housing support fixture to solve the above problems. Utility Model Content
[0003] The purpose of this invention is to provide a machining fixture for a half-shaft housing, which can solve the above-mentioned technical problems.
[0004] The specific technical solution adopted by this utility model is as follows: The present invention provides a machining fixture for a half-shaft housing, comprising two base plates and a rear axle housing body. The two base plates are provided with a first support mechanism and a second support mechanism for supporting both sides of the rear axle housing body. The two base plates are also provided with clamping parts for cooperating with the first support mechanism and the second support mechanism. The clamping component includes four spiral hole columns, a first pressure plate, and a second pressure plate. Each of the four spiral hole columns is threaded with a lead screw. A limit nut and a clamping nut are threaded onto the lead screw. The limit nut presses against the surface of the spiral hole column. The four spiral hole columns are divided into two groups, and the two groups are welded and fixed to the two base plates respectively. The four lead screws are divided into two groups, and the two groups correspond to the first support mechanism and the second support mechanism respectively.
[0005] Preferably, the first pressure plate is slidably sleeved on one of the two sets of lead screws corresponding to the second support mechanism. The first pressure plate presses on the upper side of the mounting flange on one side of the rear axle housing body, and two clamping nuts on one set of lead screws abut against the surface of the first pressure plate.
[0006] Preferably, the second pressure plate is slidably sleeved on another set of two lead screws corresponding to the first support mechanism, and the second pressure plate presses on the other side of the upper surface of the rear axle housing, with two clamping nuts on the other set of lead screws abutting against the surface of the second pressure plate.
[0007] Preferably, the first support mechanism includes two fixed plates and a movable component overlapping the two fixed plates. A connecting plate is fixed between the two fixed plates, and both fixed plates are fixed on one of the base plates and are located on one side offset between two sets of spiral hole columns.
[0008] Preferably, the movable component includes two first support plates and a first overlapping plate. The first overlapping plate overlaps on two fixed plates and a connecting plate. The surfaces of the two first support plates are engaged with one end of the rear axle housing body through a first arc-shaped notch. The two first support plates are fixed on both sides of the surface of the first overlapping plate, and ribs are fixed on the lower sides of the opposite sides of the two first support plates. The first overlapping plate has a insertion hole, which engages with a protrusion. The protrusion is provided on the connecting plate.
[0009] Preferably, the second support mechanism includes a fixed frame and a second support plate. The surface of the second support plate is engaged with the lower end of the flange on the other side of the rear axle housing body through a second arc-shaped notch. The second support plate is fixed to the second overlapping plate, which overlaps on the fixed frame. The fixed frame is fixed to another base plate and located between another set of two spiral hole columns.
[0010] Preferably, the cavity inside the fixed frame is inserted into the plug plate, and the plug plate is fixed to the bottom surface of the second lap plate.
[0011] The beneficial effects are: 1. This utility model uses a first support mechanism and a second support mechanism to precisely position and support both sides of the rear axle housing body, and combines this with the synergistic effect of unique clamping components to greatly improve the stability and reliability of clamping. The movable part of the first support mechanism engages with one side of the housing through a first arc-shaped notch, while the second support mechanism uses a second arc-shaped notch to support the lower end of the flange on the other side, forming a stable and matching V-shaped or arc-shaped support that effectively limits the displacement of the workpiece. Subsequently, by tightening the clamping nuts on the two sets of screws, the first pressure plate is driven to press against the upper surface of one flange, and the second pressure plate presses against the upper surface of the other side of the housing, achieving reliable locking of the workpiece from above. This multi-point, multi-directional clamping force, combined with the supporting force of the lower support mechanism, forms a balanced fixing system that effectively suppresses vibration and deformation during processing, thus ensuring high-precision machining and significantly improving the machining quality of features such as holes and end faces.
[0012] 2. This utility model, through the first and second support mechanisms, adopts a modular and quickly replaceable design for the core support components of the tooling, enabling it to flexibly adapt to rear axle housings of different models and sizes. The "moving component" (i.e., the combination of the first support plate and the first overlapping plate) in the first support mechanism is an independent module that can be directly removed and replaced as a whole. The second support plate in the second support mechanism also forms an independent module through the second overlapping plate. By replacing the moving component and the second support plate combination with different specifications (such as different curvatures and heights), the position and shape of the support points can be quickly adjusted to accurately match the contours of workpieces of different sizes. This design eliminates the cumbersome process of complex mechanical adjustments or remanufacturing of the entire tooling set in traditional tooling, achieving rapid production changeover, greatly improving the versatility of the tooling and the flexibility of the production line. It is particularly suitable for modern production models with multiple varieties and small batches, effectively reducing tooling investment costs and improving equipment utilization. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the exploded distribution structure of the first support mechanism and the clamping component of this utility model; Figure 3 This is a schematic diagram of the moving parts of the support mechanism of this utility model; Figure 4 This is a schematic diagram of the exploded distribution structure of the second support mechanism and the clamping component of this utility model.
[0014] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. First support mechanism; 21. Fixing plate; 22. Connecting plate; 22a. Protrusion; 23. First support plate; 24. Rib plate; 25. First overlapping plate; 25a. Insertion hole; 3. Second support mechanism; 31. Fixing frame; 32. Second support plate; 33. Second overlapping plate; 34. Insertion plate; 4. Rear axle housing body; 5. Helical hole post; 6. Lead screw; 61. Limiting nut; 62. Clamping nut; 7. First pressure plate; 8. Second pressure plate. Detailed Implementation
[0015] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0016] like Figure 1-4As shown, a half-shaft housing machining fixture includes two base plates 1 and a rear axle housing body 4. The two base plates 1 are provided with a first support mechanism 2 and a second support mechanism 3 for supporting both sides of the rear axle housing body 4. The two base plates 1 are also provided with clamping parts for cooperating with the first support mechanism 2 and the second support mechanism 3. The clamping component includes four spiral hole columns 5, a first pressure plate 7 and a second pressure plate 8. Each of the four spiral hole columns 5 is threaded with a lead screw 6. The lead screw 6 is threaded with a limit nut 61 and a clamping nut 62. The limit nut 61 presses against the surface of the spiral hole column 5. The four spiral hole columns 5 are divided into two groups, and the two groups are welded and fixed on the two base plates 1 respectively. The four screw rods 6 are divided into two groups, and the two groups correspond to the first support mechanism 2 and the second support mechanism 3 respectively.
[0017] As an optional implementation, the first pressure plate 7 is slidably sleeved on one of the two sets of lead screws 6 corresponding to the second support mechanism 3. The first pressure plate 7 presses on the upper side of the mounting flange on one side of the rear axle housing body 4. Two clamping nuts 62 on one set of lead screws 6 abut against the surface of the first pressure plate 7. In this way, the first pressure plate 7 can press and fix the flange on one side of the rear axle housing, thereby improving the fixing effect during processing.
[0018] See attached document Figure 2 The second pressure plate 8 is slidably sleeved on another set of two lead screws 6 corresponding to the first support mechanism 2, and the second pressure plate 8 presses on the other side of the upper surface of the rear axle housing. The two clamping nuts 62 on the other set of lead screws 6 abut against the surface of the second pressure plate 8. The second pressure plate 8 is cylindrical and has a flat surface cut on its surface. In this way, not only can the second pressure plate 8 be used to press the other side of the rear axle housing body 4, but the threaded engagement between the clamping nuts 62 and the lead screws 6 also facilitates the disassembly and replacement of the rear axle housing body 4, and facilitates continuous processing and fixing.
[0019] Furthermore, the first support mechanism 2 includes two fixed plates 21 and a movable component overlapping the two fixed plates 21. A connecting plate 22 is fixed between the two fixed plates 21, and both fixed plates 21 are fixed on one of the base plates 1 and located on one side offset between two sets of spiral hole columns 5. In this way, the two fixed plates 21 and the connecting plate 22 can provide overlapping support for the movable component.
[0020] See attached document Figure 3The movable component includes two first support plates 23 and a first overlapping plate 25. The first overlapping plate 25 overlaps on two fixed plates 21 and a connecting plate 22. The surfaces of the two first support plates 23 are engaged with one end of the rear axle housing body 4 through the first arc-shaped notches. The two first support plates 23 are fixed on both sides of the surface of the first overlapping plate 25, and ribs 24 are fixed on the lower sides of the opposite sides of the two first support plates 23. This allows the movable component to not only engage and support one end of the rear axle housing body 4, but also facilitate the engagement and support of rear axle housing bodies 4 of different sizes when the movable component is separated. The first overlapping plate 25 has a insertion hole 25a, which engages with a protrusion 22a. The protrusion 22a is located on the connecting plate 22. This allows the movable component to be limited when it overlaps on the two fixed plates 21 by engaging the insertion hole 25a with the protrusion 22a, thus improving the positioning effect during support.
[0021] See attached document Figure 4 The second support mechanism 3 includes a fixed frame 31 and a second support plate 32. The surface of the second support plate 32 is clamped to the lower end of the flange on the other side of the rear axle housing body 4 through a second arc-shaped notch. The second support plate 32 is fixed on the second overlapping plate 33, which overlaps the fixed frame 31. The fixed frame 31 is fixed on another base plate 1 and located between another set of two spiral hole columns 5. In this way, the second support mechanism 3 can not only provide corresponding arc-shaped clamping support for the flange on the other side of the rear axle housing body 4, but also make the second support plate 32 easy to replace. This facilitates its use in conjunction with the first support mechanism 2 to clamp and support rear axle housing bodies 4 of different sizes.
[0022] Furthermore, the cavity inside the fixed frame 31 is inserted into the plug plate 34, and the plug plate 34 is fixed to the bottom surface of the second overlapping plate 33. In this way, the plug plate 34 and the inside of the fixed frame 31 can be inserted into each other to limit the position of the second overlapping plate 33 on the second support mechanism 3 after overlapping.
[0023] Using the above structure, firstly, according to the size specifications of the rear axle housing to be processed, select the movable part of the first support mechanism 2 and the second support plate 32 of the second support mechanism 3 of the corresponding specifications for preparation; align the movable part with the protrusion 22a on the connecting plate 22 of the first support mechanism 2 through the insertion hole 25a at the bottom of its first overlapping plate 25, and place it so that the movable part is stably overlapped on the two fixed plates 21 and the connecting plate 22, completing the assembly and positioning of the first support mechanism 2; then, insert the insertion plate 34 at the bottom of the second overlapping plate 33 of the second support mechanism 3 into and overlap it in the inner cavity of the fixed frame 31, so that the second support plate 32 is in place. After that, hoist the rear axle housing body 4 onto the tooling, so that its two ends on one side are respectively inserted into the first arc-shaped recesses of the two first support plates 23 of the movable part, and at the same time, let the lower end of the flange on the other side be inserted into the second arc-shaped recess of the second support plate 32, completing the initial positioning and support of the workpiece. Next, the first pressure plate 7 is fitted onto the two lead screws 6 corresponding to the second support mechanism 3 and pressed against the upper surface of one side of the flange. The second pressure plate 8 is then fitted onto the other set of two lead screws 6 corresponding to the first support mechanism 2 and pressed against the upper surface of the other side of the housing. Finally, the clamping nuts 62 on each set of lead screws 6 are tightened sequentially, pressing them downwards against the first pressure plate 7 and the second pressure plate 8, thus uniformly and reliably clamping the workpiece, allowing processing to begin. After processing is complete, the clamping nuts 62 are loosened, the pressure plates are removed, and the workpiece can be lifted away. By replacing different specifications of moving parts and the second support plate 32 module, the processing of the next model of workpiece can be quickly adapted.
[0024] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. This application is mainly used to protect mechanical devices. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, are implemented according to conventional methods in the field.
Claims
1. A machining fixture for a half-shaft housing, characterized in that: It includes two base plates (1) and a rear axle housing body (4). The two base plates (1) are provided with a first support mechanism (2) and a second support mechanism (3) for supporting both sides of the rear axle housing body (4). The two base plates (1) are also provided with clamping parts for cooperating with the first support mechanism (2) and the second support mechanism (3). The clamping component includes four spiral hole columns (5), a first pressure plate (7) and a second pressure plate (8). Each of the four spiral hole columns (5) is threaded with a lead screw (6). A limit nut (61) and a clamping nut (62) are threaded onto the lead screw (6). The limit nut (61) presses against the surface of the spiral hole column (5). The four spiral hole columns (5) are divided into two groups, and the two groups are welded and fixed on the two base plates (1) respectively. The four lead screws (6) are divided into two groups, and the two groups correspond to the first support mechanism (2) and the second support mechanism (3) respectively.
2. The machining fixture for a half-shaft housing according to claim 1, characterized in that: The first pressure plate (7) is slidably sleeved on one of the two screw rods (6) corresponding to the second support mechanism (3). The first pressure plate (7) presses on the upper side of the mounting flange on one side of the rear axle housing body (4). Two clamping nuts (62) on one of the screw rods (6) abut against the surface of the first pressure plate (7).
3. The machining fixture for a half-shaft housing according to claim 2, characterized in that: The second pressure plate (8) is slidably sleeved on another set of two lead screws (6) corresponding to the first support mechanism (2), and the second pressure plate (8) presses on the other side of the upper surface of the rear axle housing, and the two clamping nuts (62) on the other set of lead screws (6) abut against the surface of the second pressure plate (8).
4. The machining fixture for a half-shaft housing according to claim 3, characterized in that: The first support mechanism (2) includes two fixed plates (21) and a movable part that overlaps the two fixed plates (21). A connecting plate (22) is fixed between the two fixed plates (21), and both fixed plates (21) are fixed on one of the base plates (1) and located on one side offset between two sets of spiral hole columns (5).
5. The machining fixture for a half-shaft housing according to claim 4, characterized in that: The movable component includes two first support plates (23) and a first overlapping plate (25). The first overlapping plate (25) overlaps on two fixed plates (21) and a connecting plate (22). The surfaces of the two first support plates (23) are engaged with one end of the rear axle housing body (4) through the first arc-shaped notch. The two first support plates (23) are fixed on both sides of the surface of the first overlapping plate (25). Ribs (24) are fixed on the lower sides of the opposite sides of the two first support plates (23). The first overlapping plate (25) has a plug hole (25a) and the plug hole (25a) is engaged with the protrusion (22a). The protrusion (22a) is set on the connecting plate (22).
6. The machining fixture for a half-shaft housing according to claim 5, characterized in that: The second support mechanism (3) includes a fixed frame (31) and a second support plate (32). The surface of the second support plate (32) is secured to the lower end of the flange on the other side of the rear axle housing body (4) through a second arc-shaped notch. The second support plate (32) is fixed on the second overlapping plate (33), which overlaps on the fixed frame (31). The fixed frame (31) is fixed on another base plate (1) and located between another set of two spiral hole columns (5).
7. The machining fixture for a half-shaft housing according to claim 6, characterized in that: The cavity inside the fixed frame (31) is connected to the plug plate (34), and the plug plate (34) is fixed to the bottom surface of the second lap plate (33).