A device for differential assembly

Abstract

This utility model discloses a device for differential assembly, relating to the field of differential assembly technology. It includes a rectangular base plate, with a fixed plate vertically mounted on one short side of the base plate. A movable plate is vertically mounted on the upper surface of the rectangular base plate, and a driving assembly for moving the movable plate along the long side of the rectangular base plate is located on the side of the movable plate opposite to the fixed plate. Both ends of the fixed plate and the movable plate have vertically extending, upward-pointing waist-shaped clamping plates, and the waist-shaped clamping plates on the fixed plate and the movable plate are symmetrically arranged. This utility model provides a device for differential assembly, which has a stable structure, reliable clamping, and strong adaptability, enabling rapid, precise, and non-destructive fixing of the differential housing, thereby ensuring assembly quality and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of differential assembly technology, and in particular to a device for differential assembly. Background Technology

[0002] With the rapid development of the new energy vehicle industry and the continuous improvement of vehicle power performance, the performance requirements for the core transmission component—the differential—are becoming increasingly stringent. To meet the greater torque load requirements, the connection structure between the differential housing and the driven gear needs to be strengthened. This directly leads to a significant increase in the tightening torque of the fixing bolts during assembly, typically requiring a high torque range of 150 to 180 N·m.

[0003] like Figure 1 As shown, the differential rear housing, as a key load-bearing component, has a symmetrical design, but it typically has oval-shaped curved surfaces distributed around its circumference. In existing assembly technologies, the differential rear housing generally relies on manual handling or the use of simple, general-purpose tooling for positioning and clamping.

[0004] However, these methods have significant drawbacks under high-torque fastening operations: First, the smooth circumferential curved surface of the housing and the limited clamping contact area make it prone to slippage, rotation, or axial displacement under high torque reaction force. This prevents the bolts from being precisely torqued according to the preset process requirements, potentially resulting in insufficient torque or overload, directly affecting the reliability of the connection and the safety of transmission. Second, unstable fixing may cause failure modes such as stripping and seizing during bolt tightening, affecting not only assembly quality and first-pass yield but also tool damage and personnel safety hazards. In addition, simple tooling is difficult to adapt to the oval contour of the housing to achieve a large-area uniform envelope, and traditional point contact or small-area clamping methods may cause local deformation of the housing under high pressure, affecting the dimensional accuracy of the product. Utility Model Content

[0005] The purpose of this invention is to provide a device for differential assembly, which has a stable structure, reliable clamping and strong adaptability, and can achieve fast, accurate and non-destructive fixing of the differential housing, thereby ensuring assembly quality and improving production efficiency.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is: a device for differential assembly, including a horizontally arranged rectangular base plate, a fixed plate arranged vertically along the short side of one side of the rectangular base plate, a movable plate parallel to the fixed plate arranged vertically on the upper surface of the rectangular base plate, and a driving component for driving the movable plate to move along the long side of the rectangular base plate on the side away from the fixed plate, and both ends of the fixed plate and the movable plate are provided with vertically extending waist-shaped clamps, and the waist-shaped clamps on the fixed plate and the movable plate are symmetrically arranged.

[0007] As a further improvement of this utility model, the driving assembly includes a mounting boss disposed on the short side of the other side of the rectangular base plate. A driving screw that extends in the same direction as the long side of the rectangular base plate and can rotate axially is horizontally mounted on the mounting boss. The side of the driving screw away from the mounting boss is threadedly connected to a sliding block that is slidably mounted on the rectangular base plate, and the sliding block is fixedly connected to the movable plate.

[0008] As a further improvement of this utility model, the end of the drive screw away from the sliding block is provided through the mounting boss, and the drive screw and the mounting boss are rotatably connected.

[0009] As a further improvement of this utility model, sliding guide rails are provided on both long sides of the rectangular base plate, and a sliding groove is provided on the lower surface of the sliding block to slide in cooperation with the sliding guide rails.

[0010] Beneficial effects Compared with the prior art, the advantages of the device for differential assembly of this utility model are as follows: 1. The symmetrically arranged waist-shaped clamps form a large-area, closely fitting contact with the contour of the differential rear housing, greatly increasing the stability and friction of the clamping. Combined with the powerful and controllable clamping force provided by the drive assembly, it can effectively resist the huge reaction force generated during high-torque tightening, fundamentally eliminating the slippage, rotation, or displacement of the differential during the tightening process, and providing a solid foundation for the precise application of bolt torque. 2. The screw-driven movable plate design enables stepless and precise adjustment of the distance between the two waist-shaped clamps; this allows one device to be adapted to fix a variety of different specifications (sizes) of differential housings, significantly improving the versatility of the device, reducing the time spent on frequent tooling changes on the production line due to product model changes, and improving the flexibility and overall efficiency of the assembly line. 3. The sliding guide rails set on both sides of the long side of the rectangular base plate cooperate with the sliding grooves on the sliding block to provide precise guidance and stable support for the movement of the movable plate. This structure ensures that the movable plate will not be skewed or stuck during movement and clamping, so that the two waist-shaped clamping plates can always be aligned, thereby achieving precise centering and stable clamping of the differential, and further ensuring the assembly quality. 4. The entire device is based on a rectangular base plate, which has good structural rigidity. The screw drive not only generates huge mechanical gain, allowing the operator to achieve reliable clamping with a small input force, but also has a self-locking function to prevent the clamping force from accidentally loosening during the tightening process. In addition, a mounting boss extends from one end of the drive screw, which is convenient for installing operating parts such as handwheels or wrenches, making the operation more convenient and labor-saving.

[0011] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a diagram showing the existing structure of the differential housing and driven gear. Figure 2 This is one of the perspective views of this utility model; Figure 3 This is a second perspective view of the present invention; Figure 4 This is a diagram showing the usage state of this utility model.

[0014] Wherein: 1-Rectangular base plate; 2-Mounting boss; 3-Sliding guide rail; 4-Fixed plate; 5-Movable plate; 6-Sliding block; 7-Slide groove; 8-Drive screw; 9-Waist-shaped clamping plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0018] Example: The specific embodiments of this utility model are as follows: Figure 2-4As shown, a device for differential assembly is based on an adjustable clamping mechanism that provides a stable and reliable fixation for the differential rear housing to cope with high-torque bolt tightening operations.

[0019] Specifically, the device includes a rectangular base plate 1 that serves as the foundation platform for the entire device. The rectangular base plate 1 is horizontally positioned, providing a mounting base and support for all components on it.

[0020] A fixed plate 4 is vertically fixedly installed on one of the shorter sides of a rectangular base plate 1, and the fixed plate 4 is arranged along the direction of the shorter side. On the upper surface of the rectangular base plate 1, a movable plate 5 parallel to the fixed plate 4 is also provided. The movable plate 5 is located opposite the fixed plate 4, and a drive assembly is provided on the side of the movable plate 5 away from the fixed plate 4, which is used to drive the movable plate 5 to reciprocate along the longer side of the rectangular base plate 1, thereby realizing the action of moving closer to or away from the fixed plate 4.

[0021] To effectively clamp the differential rear housing, vertically extending, upward-pointing waist-shaped clamping plates 9 are provided at both ends of the fixed plate 4 and the movable plate 5. The two waist-shaped clamping plates 9 on the fixed plate 4 and the two waist-shaped clamping plates 9 on the movable plate 5 are symmetrically arranged. The arc-shaped concave surfaces of these waist-shaped clamping plates are specially designed to form a large-area, perfectly fitting contact with the oval contour of the differential rear housing, thereby providing uniform envelopment and support during clamping, effectively increasing friction and preventing stress concentration that could lead to housing deformation.

[0022] In a preferred embodiment, the drive assembly has the following structure: A mounting boss 2 is provided on the shorter side of the opposite side of the rectangular base plate 1. A drive screw 8 is horizontally mounted on the mounting boss 2, with the axis of the drive screw 8 parallel to the long side of the rectangular base plate 1. The drive screw 8 is configured to rotate about its own axis on the mounting boss 2. The side of the drive screw 8 away from the mounting boss 2 is threadedly connected to a sliding block 6, which is slidably mounted on the rectangular base plate 1. The sliding block 6 is also fixedly connected to the movable plate 5. When the operator rotates the drive screw 8, the sliding block 6 will drive the movable plate 5 to move linearly along the long side of the rectangular base plate 1 through the threaded transmission.

[0023] For ease of operation, the end of the drive screw 8 furthest from the sliding block 6 can pass through the mounting boss 2, and a square or hexagonal structure is machined at the end to facilitate operation using a wrench or mounting handwheel. The drive screw 8 and the mounting boss 2 are rotatably connected by bearings or bushings to reduce frictional resistance.

[0024] To ensure the smooth and precise movement of the movable plate 5 and prevent it from tilting during movement, sliding guide rails 3 are provided on both long sides of the rectangular base plate 1. Correspondingly, a groove 7 is formed on the lower surface of the sliding block 6 to slide in cooperation with these two sliding guide rails 3. This guide rail-groove cooperation structure provides precise guidance and stable support for the movement of the sliding block 6 and the movable plate 5, ensuring that the waist-shaped clamping plates 9 on both sides can always be aligned, achieving precise centering and stable clamping of the differential.

[0025] It is important to note that the structural design of the waist-shaped clamping plate 9 provides a solid foundation for subsequent workpiece protection measures. For example, soft or special friction materials such as engineering plastics or copper-based alloys can be coated or inlaid on the inner surface of the clamping plate that contacts the housing. This increases friction and acts as a buffer layer, preventing hard tooling from directly contacting the differential housing surface and causing indentations, scratches, or deformation, thus achieving non-destructive clamping of the workpiece.

[0026] The working process of this fixture is as follows: Place the workpiece: Place the differential rear housing on the rectangular base plate 1 and position it between the two waist-shaped clamping plates 9 of the fixing plate 4.

[0027] Adjusting the gap: The operator rotates the drive screw 8. The rotation of the drive screw 8 is converted into the linear motion of the sliding block 6 through the threaded pair. The sliding block 6 drives the movable plate 5 to move towards the fixed plate 4 until the two waist-shaped clamps 9 on the movable plate 5 contact from the other side and initially adhere to the differential rear housing.

[0028] Fastening and clamping: Continue rotating the drive screw 8, and the waist-shaped clamping plates 9 on both sides will evenly clamp the oval contour of the differential rear housing. The self-locking characteristic of the drive screw 8 prevents the clamping force from loosening during subsequent operations.

[0029] Assembly: After the differential housing is securely fixed, the operator can use a torque wrench or other tools to tighten the connecting bolts between the differential housing and the driven gear to the specified torque (150-180 N·m). The stable clamping provided by the device effectively resists the reaction force generated by high torque, ensuring precise torque application.

[0030] Loosening the workpiece: After the bolts are tightened, rotate the drive screw 8 in the opposite direction to make the movable plate 5 move backward, thereby loosening the workpiece and removing it.

[0031] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A device for assembling a differential, comprising a horizontally arranged rectangular base plate (1), characterized in that, A fixed plate (4) is vertically arranged along the short side on one side of the rectangular base plate (1). A movable plate (5) parallel to the fixed plate (4) is vertically arranged on the upper surface of the rectangular base plate (1). A driving component for driving the movable plate (5) to move along the long side of the rectangular base plate (1) is provided on the side of the movable plate (5) away from the fixed plate (4). Both ends of the fixed plate (4) and the movable plate (5) are vertically provided with waist-shaped clamps (9) extending upwards, and the waist-shaped clamps (9) on the fixed plate (4) and the movable plate (5) are symmetrically arranged.

2. The device for differential assembly according to claim 1, characterized in that, The drive assembly includes a mounting boss (2) on the short side of the other side of the rectangular base plate (1). A drive screw (8) extending in the same direction as the long side of the rectangular base plate (1) and capable of axial rotation is horizontally mounted on the mounting boss (2). The side of the drive screw (8) away from the mounting boss (2) is threadedly connected to a sliding block (6) that is slidably mounted on the rectangular base plate (1). The sliding block (6) is fixedly connected to the movable plate (5).

3. The device for differential assembly according to claim 2, characterized in that, The end of the drive screw (8) away from the sliding block (6) passes through the mounting boss (2), and the drive screw (8) and the mounting boss (2) are rotatably connected.

4. The device for differential assembly according to claim 2, characterized in that, The rectangular base plate (1) is provided with sliding guide rails (3) on both long sides, and the sliding block (6) is provided with a groove (7) on the lower surface of the sliding block (6) that slides in cooperation with the sliding guide rails (3).

Images