Clamping fixture for processing decorative ring product

Abstract

The utility model discloses a clamping fixture for processing decorative ring products, which relates to the technical field of automobile part processing, and comprises a plurality of clamping parts for positioning and clamping decorative ring workpieces, the clamping parts are fan-shaped blocky structures which are distributed on a machine tool chuck in a radial array manner, and the clamping parts are arranged on the machine tool chuck. The clamping parts are encircled to form a clamp for clamping a decorative ring workpiece, fan-shaped clamping structures are arranged on the clamping parts corresponding to clamping positions of the decorative ring workpiece, and the contact positions of the fan-shaped clamping structures and the clamping positions of the decorative ring workpiece account for 70%-90% of the total circumferential length of the clamping positions. According to the utility model, the clamping state of the decorative ring workpiece and the fan-shaped clamping structure is close to full circle contact, the contact surface between the clamping part and the clamping position of the decorative ring workpiece is increased, and the workpiece is uniformly stressed in the circumferential direction, so that the problem that the sheet-shaped decorative ring product is easy to deform when being clamped is solved. And due to the arrangement of the wedge-shaped structure, the clamping reliability of the workpiece is improved, the positioning precision of the workpiece is improved, and the machining quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a clamping fixture used for processing decorative ring products. Background Art

[0002] With the development of the aluminum alloy wheel industry, the market demand for personalized wheel appearance is gradually increasing. Some wheel types require a decorative ring to be added to the outside of the wheel after processing to improve the appearance of the wheel. The decorative ring is usually a ring-shaped thin sheet structure connected to the outside of the wheel. Because the single-piece decorative ring is thin and has low strength, the clamping force of the clamp is difficult to control during the clamping and processing using traditional clamps. If the clamping force is too large, it is very easy to cause the ring body to deform and fail to meet product quality requirements; if the clamping force is too small, there is a safety hazard of the workpiece flying out, affecting the safety of the operation.

[0003] Based on this, developing a clamping fixture for decorative ring product processing is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The purpose of the utility model is to provide a clamping fixture for processing decorative ring products in order to solve the problems of poor applicability of the clamps in the existing decorative ring processing process, easy deformation of the ring body, and potential safety hazards.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A clamping fixture for processing decorative ring products, comprising a plurality of clamping parts for positioning and clamping a decorative ring workpiece, the clamping parts being fan-shaped block structures arranged in a radial array on a machine tool chuck, the plurality of clamping parts together forming a fixture for clamping the decorative ring workpiece, the clamping parts being provided with fan-shaped clamping structures corresponding to the clamping positions of the decorative ring workpiece, the contact position between the fan-shaped clamping structure and the clamping position of the decorative ring workpiece occupying 70%-90% of the total circumferential length of the clamping position, so that the circumferential force on the workpiece is uniform, thereby improving the problem of easy deformation of thin sheet decorative ring products during clamping.

[0007] Preferably, the fan-shaped clamping structure on the clamping portion is a tensioning boss arranged on the clamping portion, the tensioning boss is arranged corresponding to the inner diameter of the decorative ring workpiece, and the axial height of the tensioning boss is slightly higher than the thickness of the decorative ring clamping position.

[0008] Preferably, the outer diameter of the tensioning boss is provided with a wedge-shaped structure to improve the reliability of workpiece clamping, and the outer diameter height direction of the tensioning boss is set at a certain angle a with the axial direction of the tensioning boss, so that the tensioning boss is an inverted truncated cone-shaped structure connected to the clamping part.

[0009] Preferably, the angle a is set to 2-5°.

[0010] Preferably, the fan-shaped clamping structure comprises a clamping groove arranged corresponding to the outer diameter of the decorative ring workpiece, and the clamping groove is arranged corresponding to the outer edge contour of the decorative ring workpiece, and is used to clamp the outer diameter of the decorative ring workpiece.

[0011] Preferably, a wedge-shaped structure is also provided in the clamping groove to improve the clamping reliability of the workpiece. The wedge-shaped structure is a vertical surface arranged at a certain angle in the clamping groove, so that the radial dimension of the clamping groove gradually decreases from bottom to top.

[0012] Preferably, three clamping parts 1 are provided.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a fan-shaped clamping structure on the clamping part, so that the decorative ring workpiece and the fan-shaped clamping structure are in a clamping state close to a full circle contact, thereby increasing the contact surface between the clamping part and the decorative ring workpiece clamping position, making the workpiece circumferentially stressed evenly, thereby improving the problem of easy deformation of thin sheet decorative ring products during clamping. By providing a wedge-shaped structure, on the one hand, the clamping reliability of the workpiece is improved, and the risk of the workpiece flying out is reduced. On the other hand, the positioning accuracy of the workpiece is improved, thereby ensuring the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a schematic structural diagram of the first embodiment of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the first embodiment of the utility model in use state.

[0018] Figure 3 It is a structural schematic diagram of the second embodiment of the utility model.

[0019] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0020] In the figure: 1--clamping part; 2--fan-shaped clamping structure; 21--tensioning boss; 22--clamping groove; 3--wedge-shaped structure. DETAILED DESCRIPTION

[0021] like Figure 1-4As shown, a clamping fixture for processing decorative ring products includes a plurality of clamping parts 1 for positioning and clamping decorative ring workpieces. The clamping parts 1 are fan-shaped block structures arranged in a radial array on a machine tool chuck. The plurality of clamping parts 1 are enclosed to form a fixture for clamping decorative ring workpieces. The clamping part 1 is provided with a fan-shaped clamping structure 2 corresponding to the clamping position of the decorative ring workpiece. During the clamping process, the contact position between the fan-shaped clamping structure 2 and the clamping position of the decorative ring workpiece occupies 70%-90% of the total circumferential length of the clamping position. When in use, the clamping part 1 is assembled on the machine tool chuck, and the radial displacement of the clamping part 1 is adjusted by the machine tool chuck so that the fan-shaped clamping structure 2 of the clamping part 1 is clamped in the clamping position of the decorative ring, thereby achieving the positioning and clamping of the decorative ring workpiece. In this embodiment, the connection method between the clamping part 1 and the machine tool chuck can refer to the conventional chuck jaws in the prior art, which will not be repeated here.

[0022] In this embodiment, a fan-shaped clamping structure 2 is provided on the clamping portion 1, so that the decorative ring workpiece and the fan-shaped clamping structure 2 are clamped in a state close to full-circle contact, thereby increasing the contact surface between the clamping portion 1 and the clamping position of the decorative ring workpiece, making the circumferential force on the workpiece uniform, thereby improving the problem of easy deformation of thin sheet decorative ring products during clamping.

[0023] As a preferred embodiment, three clamping parts 1 are provided, and the three clamping parts 1 can translate radially along the machine tool chuck, and the three clamping parts 1 can be relatively brought together or apart to form a clamping or loosening action on the decorative ring workpiece.

[0024] As a first embodiment, Figure 1-2 As shown, the fan-shaped clamping structure 2 on the clamping part 1 is a tightening boss 21 arranged on the clamping part 1. The tightening boss 21 is arranged corresponding to the inner diameter of the decorative ring workpiece, and the axial height of the tightening boss 21 is slightly higher than the thickness of the decorative ring mounting position to ensure the reliability of the clamping. This embodiment is suitable for the outer circle processing of the decorative ring workpiece. When in use, the radial position of the clamping part 1 is adjusted by the machine tool chuck so that the radial size formed by the tightening boss 21 is smaller than the inner diameter of the decorative ring, and then the inner diameter sleeve of the decorative ring workpiece is set on the tightening boss 21, and the machine tool chuck is adjusted to make the clamping part 1 move outward in the radial direction. The tightening boss 21 is circumferentially clamped on the inner diameter of the decorative ring, and the positioning and clamping of the workpiece is completed by the inner support reverse tensioning method of the positioning round table, so that the machine tool can turn the end face and outer circle of the decorative ring workpiece.

[0025] As a preferred embodiment, the outer diameter of the tightening boss 21 is provided with a wedge-shaped structure 3 to improve the clamping reliability of the workpiece. Specifically, the outer diameter height direction of the tightening boss 21 is set at a certain angle a with the axial direction of the tightening boss 21, so that the tightening boss 21 is connected to the clamping part 1 in an inverted truncated cone-shaped structure. The setting of the wedge-shaped structure 3 enables the tightening boss 21 to generate an inward axial tension on the workpiece during the clamping process, so that the end face of the decorative ring workpiece is tightly attached to the clamping part 1, which improves the clamping reliability of the workpiece and reduces the risk of the workpiece flying out. On the other hand, the positioning accuracy of the workpiece is improved, thereby ensuring the processing quality.

[0026] Preferably, the angle a is set to 2-5°, and more preferably, the angle a is 3°.

[0027] As a second embodiment, Figure 2-4 As shown, in order to adapt to the turning operation of the inner diameter of the decorative ring, the fan-shaped clamping structure 2 includes a clamping groove 22 set corresponding to the outer diameter of the decorative ring workpiece. The clamping groove 22 is set corresponding to the outer edge contour of the decorative ring workpiece, and is used to clamp the outer diameter of the decorative ring workpiece, so that the inner diameter of the decorative ring workpiece is fully exposed, so as to facilitate the turning operation of the inner diameter of the decorative ring workpiece. When the inner diameter of the decorative ring workpiece is processed, the radial position of the clamping part 1 is adjusted by the machine tool chuck so that the radial size formed by the clamping groove 22 is larger than the outer diameter of the decorative ring, and then the decorative ring workpiece is placed in the clamping groove 22, and the machine tool chuck is adjusted to make the clamping part 1 move radially inward, and the clamping groove 22 is circumferentially clamped on the outer diameter of the decorative ring. The workpiece is positioned and clamped by the clamping action of the clamping groove 22, so that the machine tool can turn the inner diameter of the decorative ring workpiece.

[0028] In a further embodiment, a wedge-shaped structure 3 is also provided in the clamping groove 22 to improve the clamping reliability of the workpiece. The wedge-shaped structure 3 is a vertical surface provided at a certain angle in the clamping groove 22, so that the radial dimension of the clamping groove 22 gradually decreases from bottom to top, so that during the clamping process of the workpiece, the wedge-shaped structure 3 can generate an inward axial pressing force on the workpiece, so that the end face of the decorative ring workpiece is closely attached to the clamping part 1, which improves the clamping reliability of the workpiece and reduces the risk of the workpiece flying out. On the other hand, it improves the positioning accuracy of the workpiece and ensures the processing quality.

[0029] The above disclosure is only a specific embodiment of the present patent, but the present patent is not limited thereto. For ordinary technicians in this field, without departing from the principle of the present invention, the deformation made should be deemed to belong to the protection of the present invention.

Claims

1. A clamping fixture for processing decorative ring products, characterized in that: The invention comprises a plurality of clamping parts (1), wherein the clamping parts (1) are fan-shaped block structures arranged in a radial array on a machine tool chuck, and the plurality of clamping parts (1) are combined to form a clamp for clamping a decorative ring workpiece, and a fan-shaped clamping structure (2) is arranged on the clamping part (1) corresponding to a clamping position of the decorative ring workpiece, and the contact position between the fan-shaped clamping structure (2) and the clamping position of the decorative ring workpiece occupies 70% to 90% of the total circumferential length of the clamping position.

2. A clamping fixture for processing decorative ring products according to claim 1, characterized in that: The fan-shaped clamping structure (2) on the clamping portion (1) is a tightening boss (21) arranged on the clamping portion (1), the tightening boss (21) being arranged corresponding to the inner diameter of the decorative ring workpiece, and the axial height of the tightening boss (21) being higher than the thickness of the decorative ring clamping position.

3. The clamping fixture for processing decorative ring products according to claim 2, characterized in that: The outer diameter of the tensioning boss (21) is provided with a wedge-shaped structure (3) to improve the reliability of workpiece clamping. The height direction of the outer diameter of the tensioning boss (21) and the axial direction of the tensioning boss (21) are arranged at a certain angle a, so that the tensioning boss (21) is connected to the clamping part (1) in an inverted truncated cone-shaped structure.

4. The clamping fixture for processing decorative ring products according to claim 3 is characterized in that: The angle a is set to 2-5°.

5. The clamping fixture for processing decorative ring products according to claim 1, characterized in that: The fan-shaped clamping structure (2) comprises a clamping groove (22) arranged corresponding to the outer diameter of the decorative ring workpiece, and the clamping groove (22) is arranged corresponding to the outer edge contour of the decorative ring workpiece and is used to clamp the outer diameter of the decorative ring workpiece.

6. The clamping fixture for processing decorative ring products according to claim 5, characterized in that: A wedge-shaped structure (3) for improving the reliability of workpiece clamping is also provided in the clamping groove (22); the wedge-shaped structure (3) is a vertical surface provided at a certain angle in the clamping groove (22), so that the radial dimension of the clamping groove (22) gradually decreases from bottom to top.

7. A clamping fixture for processing decorative ring products according to any one of claims 1 to 6, characterized in that: The clamping parts (1) are provided in three numbers.

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