Control of springback in stamping automotive wheelhouse outer panel

Abstract

A kind of control stamping springback automobile wheel cover outer plate, including arc wheel cover outer plate body, the top middle of wheel cover outer plate body is provided with the flat seat recessed inward, the middle of flat seat is provided with round hole, the outside of round hole is evenly distributed with several positioning holes;The edge of wheel cover outer plate body is provided with butt plate body, the side of butt plate body is provided with hanging buckle a and assembly hole a, the other side is provided with hanging buckle b and assembly hole b;The lower of flat seat is provided with multiple middle rib grooves side by side, the upper end of middle rib groove extends to flat seat;The wide arc surface of the side of middle rib groove is evenly provided with several side rib grooves a, the narrow arc surface of the other side is evenly provided with several side rib grooves b;The corner of the side of flat seat is provided with conical reinforcing groove, conical reinforcing groove protrudes the surface of flat seat inward;By the reasonable arrangement of groove body and step, residual stress in the process of stamping plastic forming is fully released, plastic deformation is more sufficient, and the phenomenon of springback after stamping forming can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to a controllable stamping springback automotive wheel arch outer panel. Background Technology

[0002] The wheel arch cover is a structural component covering the outside of the wheels. It is a large, curved plate located on the lower side of the vehicle body, close to the junction of the tire and the door or side panel. Its main functions are protection, decoration, and performance enhancement. Protectively, it blocks mud, sand, and stones kicked up by the tires during driving, preventing them from impacting the underbody or side panel components, reducing paint scratches and component wear, and preventing rainwater from splashing onto the inside of the vehicle. Decoratively, its shape conforms to the body lines, concealing the mechanical structures around the wheels and enhancing the overall integrity and aesthetics of the vehicle's appearance. Because the wheel arch cover is a relatively large curved plate, uneven deformation or insufficient plastic deformation can occur during the stamping process, exacerbating residual stress and causing springback after stamping. This can lead to deviations in product size and shape from design standards, affecting subsequent assembly. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a method for controlling the springback of stamped automotive wheel arch outer panels.

[0004] The technical solution of this utility model is as follows: a controllable stamping rebound automotive wheel arch outer panel, comprising an arc-shaped wheel arch outer panel body, a recessed flat seat at the top center of the wheel arch outer panel body, the flat seat forming a stepped structure on the wheel arch outer panel body, a circular hole in the center of the flat seat, and several positioning holes evenly distributed on the outer side of the circular hole, the size of the positioning holes being smaller than the size of the circular hole; a docking plate body is provided at the edge of the wheel arch outer panel body, the docking plate body is flat, a hook A and an assembly hole A are provided on one side of the docking plate body, a square hole is provided on the docking plate body, the hook A is located in the square hole, and a hook B and an assembly hole B are provided on the other side, both the assembly hole A and the assembly hole B are set on the recessed flat seat; multiple central rib grooves are arranged side by side below the flat seat, the upper end of the central rib grooves extending to the flat seat.

[0005] Preferably, a plurality of side rib grooves A are uniformly provided on the wide arc surface on one side of the central rib groove, and the side rib grooves A extend to the upper and lower parts of the wide arc surface; a plurality of side rib grooves B are uniformly provided on the narrow arc surface on the other side, and the side rib grooves B extend to the upper and lower parts of the narrow arc surface.

[0006] Preferably, the lower part of the narrow arc surface of the mating plate is provided with a notch, the middle of the notch is provided with an assembly hole C, the middle of the notch is provided with a protruding plate, and the assembly hole C is provided on the protruding plate.

[0007] Preferably, an arc-shaped extension is provided between the narrow arc surface corresponding to the notch and the mating plate, and the arc-shaped extension is close to the notch.

[0008] Preferably, a tapered reinforcing groove is provided at one corner of the plane seat, the tapered reinforcing groove intrudes into a part of the plane seat, and the tapered reinforcing groove protrudes inward from the surface of the plane seat.

[0009] Preferably, the upper corner of the docking plate is provided with a square groove, which extends out of the outer side of the docking plate, and an auxiliary assembly hole is provided in the square groove.

[0010] Preferably, the edges of the mating plates on both sides of the outer body of the wheel cover are provided with folded edges, and the folded edges and the mating plates are staggered to create steps, thereby forming a reinforcing rib structure.

[0011] The beneficial technical effects of this utility model are as follows: This utility model provides an inwardly recessed, stepped flat seat on the outer plate of the wheel cover, and a conical reinforcing groove is provided at one end of the flat seat. Rib grooves are evenly provided from the middle to both ends of the surface of the outer plate of the wheel cover. Through the reasonable arrangement of the grooves and steps, the residual stress during the stamping and shaping process is fully released, making the plastic deformation more complete and effectively avoiding the phenomenon of springback after stamping. Attached Figure Description

[0012] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model; Figure 2 This is a partial enlarged view of the present invention; Figure 3 This is the second three-dimensional structural schematic diagram of this utility model; Figure 4 This is the third three-dimensional structural schematic diagram of this utility model.

[0013] In the diagram, 11. Wheel cover outer plate main body, 12. Flat seat, 121. Round hole, 122. Positioning hole, 13. Butt plate, 14. Hook A, 15. Assembly hole A, 16. Hook B, 17. Assembly hole B, 19. Central rib groove, 20. Side rib groove A, 21. Side rib groove B, 22. Notch, 23. Assembly hole C, 24. Arc-shaped extension, 25. Conical reinforcing groove, 26. Square groove, 27. Auxiliary assembly hole, 28. Folded edge, 29. Wide arc surface, 30. Narrow arc surface. Detailed Implementation

[0014] Example 1, see appendix Figure 1-4A controllable stamping rebound automotive wheel arch outer panel includes an arc-shaped wheel arch outer panel body 11. A recessed flat seat 12 is provided in the center of the top of the wheel arch outer panel body. A circular hole 121 is provided in the center of the flat seat 12, and several positioning holes 122 are evenly distributed on the outer side of the circular hole. The flat seat 12 is used to support the mounting seat of the shock absorber. The mounting seat of the shock absorber is connected to the positioning holes 122 by screws, improving the assembly stability of the shock absorber. A mating plate 13 is provided at the edge of the wheel arch outer panel body 11. A hook A 14 and an assembly hole A 15 are provided on one side of the mating plate 13, and a hook B 16 and an assembly hole B 17 are provided on the other side. The mating plate 13 is fully fitted to the vehicle body surface, and then fixedly connected to the vehicle body by installing screws in the assembly holes and welding.

[0015] The two hooks on the outer body 11 of the wheel arch are used to initially attach it to the vehicle body from both sides, providing initial positioning for the subsequent fixed connection of the vehicle body, which helps to reduce the assembly difficulty of the outer body of the wheel arch and improve the assembly accuracy and efficiency.

[0016] A notch 22 is provided on the mating plate 13 at the lower part of the narrow arc surface 30. A mounting hole C 23 is provided in the middle of the notch 22. After the mounting hole C is mated with the vehicle body, the structure of the notch 22 can be fitted with the arc-shaped sleeve of the vehicle body. The connection strength is improved by the combination of screws and sleeves. An arc-shaped extension 24 is provided between the narrow arc surface 30 and the mating plate 13 at the corresponding position of the notch 22. The arc-shaped extension 24 is used to extend the main body of the wheel arch outer plate toward the notch 22 to make up for the weak support formed at the notch.

[0017] The upper corner of the mating plate 13 is provided with a square groove 26, and an auxiliary assembly hole 27 is provided in the square groove. The plane formed on the square groove 26 forms a certain angle with the plane of the mating plate 13, which is conducive to the precise alignment of the assembly hole with the vehicle body to install fastening screws.

[0018] The wheel cover outer plate body 11 has folded edges 28 on both sides of the mating plate 13. The folded edges 28 form a reinforcing rib structure on the mating plate 13 to improve the shear resistance of the mating plate 13.

[0019] Example 2, see appendix Figure 1 , 3This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that: multiple central rib grooves 19 are arranged side by side below the flat seat 12, and a transition arc is provided between the central rib grooves 19 and the wheel cover outer plate body 11 to form a smooth transition between the two, which can avoid cracking caused by the impact of stamping. The upper end of the central rib grooves 19 extends to the flat seat 12. Several side rib grooves A 20 are evenly provided on the wide arc surface 29 on one side of the central rib groove 19, and several side rib grooves B 21 are evenly provided on the narrow arc surface 30 on the other side. A transition arc is provided between the side rib grooves A 20, side rib grooves B 21 and the wheel cover outer plate body 11 to form a smooth transition between the two, which can avoid cracking caused by the impact of stamping. The central rib grooves 19, side rib grooves A 20 and side rib grooves B 21 cover the entire wheel cover outer plate body 11.

[0020] A tapered reinforcing groove 25 is provided at one corner of the flat seat 12. The tapered reinforcing groove 25 protrudes inward from the surface of the flat seat 12. The tapered reinforcing groove 25 eliminates the stress generated between the flat seat 12 and the outer body 11 of the wheel cover during the stamping process, and ensures its plastic deformation effect.

[0021] This embodiment forms a densely recessed deformation structure on the outer plate of the wheel cover by the central rib groove 19, the side rib groove A 20 and the side rib groove B 21. Combined with the stepped structure formed by the fixing seat on the outer plate of the wheel cover, it can fully release the residual stress during the stamping and shaping process, so that the plastic deformation is more complete and the springback phenomenon after stamping can be effectively avoided.

Claims

1. A controlled stamping springback automotive wheel arch outer panel, characterized in that: The device includes an arc-shaped outer wheel cover body. The top center of the outer wheel cover body has an inwardly recessed flat seat with a circular hole in the center and several positioning holes evenly distributed on the outer side of the circular hole. The edge of the outer wheel cover body has a mating plate. On one side of the mating plate is a hook A and an assembly hole A, and on the other side is a hook B and an assembly hole B. Below the flat seat, there are multiple central rib grooves arranged side by side, with the upper end of the central rib grooves extending to the flat seat.

2. The controlled stamping rebound automotive wheel arch outer panel according to claim 1, characterized in that: Several side rib grooves A are evenly provided on the wide arc surface on one side of the central rib groove, and several side rib grooves B are evenly provided on the narrow arc surface on the other side.

3. The controlled stamping rebound automotive wheel arch outer panel according to claim 2, characterized in that: The lower part of the narrow arc surface has a notch on the docking plate, and the center of the notch has an assembly hole C.

4. The controlled stamping springback automotive wheel arch outer panel according to claim 3, characterized in that: An arc-shaped extension is provided between the narrow arc surface corresponding to the notch and the mating plate.

5. The controlled stamping rebound automotive wheel arch outer panel according to claim 1, characterized in that: A tapered reinforcing groove is provided at one corner of the plane seat, and the tapered reinforcing groove protrudes inward from the surface of the plane seat.

6. The controlled stamping springback automotive wheel arch outer panel according to claim 1, characterized in that: The upper corner of the docking plate is provided with a square groove, and an auxiliary assembly hole is provided in the square groove.

7. The controlled stamping springback automotive wheel arch outer panel according to claim 1, characterized in that: The edges of the mating plates on both sides of the outer body of the wheel cover are provided with folded edges.

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