Fixture for improving axial positioning precision of aviation ball head parts

Abstract

The utility model discloses a fixture for improving the axial positioning accuracy of aviation ball head parts, which comprises a positioning shaft, a base and a ball head part, a hydraulic cylinder is fixedly arranged in the positioning shaft, a clamping block groove is arranged at one end of the positioning shaft, a deformation groove is arranged in the base, the base is arranged in the clamping block groove, and the ball head part is arranged in the deformation groove. The telescopic end of the hydraulic cylinder penetrates through the positioning shaft and the base to be connected with a connecting rod towards the interior of the deformation groove, a fixed column head is fixedly installed at the tail end of the connecting rod, and the base is outwards connected with a pair of clamping blocks. The cushion layers are arranged on the clamping blocks, elastic deformation can be generated during clamping, so that the clamping effect and friction force are improved, the situation that the machining precision is affected due to the fact that the part slips and rotates in the clamping blocks is prevented, and the clamping device is simple in structure, convenient and fast to use.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a fixture for improving the axial positioning accuracy of aerospace ball-shaped parts. Background Technology

[0002] Ball joint shafts are widely used in the machinery industry. As a joint, the ball joint can rotate in all directions, providing the component with a great degree of freedom. In machining, the ball joint is usually machined first, and then the other end of the part is machined. Due to the special shape of the part, the ball joint is smooth and ordinary fixtures cannot clamp it, which brings difficulties to the subsequent machining of the part. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a fixture for improving the axial positioning accuracy of aerospace ball joint parts, thus solving the technical problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixture for improving the axial positioning accuracy of aerospace ball-shaped parts, comprising a positioning shaft, a base, and the ball-shaped part. A hydraulic cylinder is fixedly installed inside the positioning shaft, and a clamping block groove is provided at one end of the positioning shaft. A deformation groove is provided inside the base, and the base is installed in the clamping block groove. The telescopic end of the hydraulic cylinder passes through the positioning shaft and the base and is connected to a connecting rod in the deformation groove. A fixing column head is fixedly installed at the end of the connecting rod, and a pair of clamping blocks are connected to the base outward.

[0005] Preferably, the fixed column head is fixedly connected to the inner wall of the base.

[0006] Preferably, the hydraulic cylinder is connected to a hydraulic power unit.

[0007] Preferably, the front end of the clamping block is provided with an arc-shaped structure that mates with the ball-shaped part, and a pad is installed thereon.

[0008] Preferably, the clamping block forms a certain angle with the horizontal line when it is under normal stress.

[0009] Preferably, the outer wall surface of the pad is provided with anti-slip texture, and the pad is made of wear-resistant elastic rubber structure.

[0010] Beneficial effects

[0011] This utility model provides a clamp to improve the axial positioning accuracy of aerospace ball joint parts, which has the following advantages: When in use, the device drives the connecting rod through a hydraulic cylinder to move the base, thereby realizing the deformation of the clamping block and clamping and fixing the part. The clamping block is provided with a pad, which can undergo elastic deformation during clamping to increase the clamping effect and friction, preventing the part from slipping and rotating in the clamping block and affecting the machining accuracy. The structure is simple, convenient and quick. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the normal state structure of a fixture for improving the axial positioning accuracy of aerospace ball joint parts, as described in this utility model.

[0013] Figure 2 This is a schematic diagram of the clamping structure of a fixture for improving the axial positioning accuracy of aerospace ball-shaped parts, as described in this utility model.

[0014] In the diagram: 1. Positioning shaft; 2. Hydraulic cylinder; 3. Connecting rod; 4. Fixed column head; 5. Base; 6. Clamping block; 7. Deformation groove; 8. Pad layer; 9. Ball-shaped parts; 10. Clamping block groove. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-2 This utility model provides a fixture technical solution for improving the axial positioning accuracy of aerospace ball joint parts: A fixture for improving the axial positioning accuracy of aerospace ball joint parts includes a positioning shaft 1, a base 5 and a ball joint part 9. A hydraulic cylinder 2 is fixedly installed inside the positioning shaft 1. A clamping block groove 10 is opened at one end of the positioning shaft 1. A deformation groove 7 is opened inside the base 5. The base 5 is installed in the clamping block groove 10. The telescopic end of the hydraulic cylinder 2 passes through the positioning shaft 1 and the base 5 and is connected to a connecting rod 3 into the deformation groove 7. A fixing column head 4 is fixedly installed at the end of the connecting rod 3. A pair of clamping blocks 6 are connected to the base 5 outward.

[0017] Furthermore, the fixed column head 4 is fixedly connected to the inner wall of the base 5.

[0018] Furthermore, hydraulic cylinder 2 is connected to a hydraulic power unit.

[0019] Furthermore, the front end of the clamping block 6 is provided with an arc-shaped structure that mates with the ball-shaped part 9, and a pad 8 is installed thereon.

[0020] Furthermore, the clamping block 6 forms a certain angle with the horizontal line under normal unloaded conditions.

[0021] Furthermore, the outer wall surface of the pad 8 is provided with anti-slip texture, and the pad 8 is made of wear-resistant elastic rubber structure.

[0022] Example: When using this device, the ball-head part 9 is aligned with a pair of pads 8 and then inserted.

[0023] The hydraulic cylinder 2 is activated by the hydraulic station, which retracts the connecting rod 3 inward. The connecting rod 3 pulls the base 5 into the clamping block groove 10 through the base 5. Under the pressure of the inner wall of the clamping block groove 10, a pair of clamping blocks 6 deform and clamp the ball-head part 9 into the pad layer 8.

[0024] Because the pad 8 is made of elastic rubber, when clamping the ball-shaped part 9, the pad 8 will be compressed and undergo elastic deformation, which can better fill the gap between the clamping block 6 and the ball-shaped part 9, and increase the clamping and fixing effect. At the same time, the surface of the pad 8 is provided with anti-slip texture, which can increase friction and prevent the ball-shaped part 9 from rotating in the pair of clamping blocks 6.

[0025] After processing is completed, the hydraulic cylinder 2 is activated to push the connecting rod 3 forward. The clamping block 6 resets after being released from the pressure of the clamping block groove 10, thus releasing the ball-head part 9 and achieving separation.

[0026] For parts that are slightly larger than the clamping block 6, the deformation generated by the pad 8 during clamping can also fix them, increasing the range of applications of the device.

[0027] It should be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A fixture for improving the axial positioning accuracy of ball-shaped parts in aerospace applications, comprising a positioning shaft (1), a base (5), and a ball-shaped part (9), characterized in that, A hydraulic cylinder (2) is fixedly installed inside the positioning shaft (1). A clamping block groove (10) is opened at one end of the positioning shaft (1). A deformation groove (7) is opened inside the base (5). The base (5) is installed in the clamping block groove (10). The telescopic end of the hydraulic cylinder (2) passes through the positioning shaft (1) and the base (5) and is connected to a connecting rod (3) in the deformation groove (7). A fixing column head (4) is fixedly installed at the end of the connecting rod (3). A pair of clamping blocks (6) are connected to the base (5) outward.

2. The fixture for improving the axial positioning accuracy of aerospace ball-shaped parts according to claim 1, characterized in that, The fixed column head (4) is fixedly connected to the inner wall of the base (5).

3. A fixture for improving the axial positioning accuracy of aerospace ball-shaped parts according to claim 1, characterized in that, The hydraulic cylinder (2) is connected to a hydraulic station.

4. A fixture for improving the axial positioning accuracy of aerospace ball-shaped parts according to claim 1, characterized in that, The front end of the clamping block (6) is provided with an arc surface structure that mates with the ball-shaped part (9), and a pad (8) is installed thereon.

5. A fixture for improving the axial positioning accuracy of aerospace ball-shaped parts according to claim 1, characterized in that, The clamping block (6) is at a certain angle to the horizontal line when it is not under normal stress.

6. A fixture for improving the axial positioning accuracy of aerospace ball-shaped parts according to claim 4, characterized in that, The outer wall of the pad (8) is provided with anti-slip texture, and the pad (8) is made of wear-resistant elastic rubber structure.

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