Design method of spoke bottom with high durability

Abstract

The invention relates to the technical field of automobiles and mechanical engineering, in particular to a design method of a spoke bottom with high durability. According to the design method of the spoke bottom with the high durability, through a unique design method of the spoke bottom, the durability of the spoke bottom can be greatly improved, so that a failure point does not appear at the spoke bottom like an existing design method, the design bottleneck is avoided, and the lightweight purpose is further achieved by optimizing the curve of a revolving body.

Description

technical field [0001] The invention relates to the technical fields of automobiles and mechanical engineering, in particular to a method for designing spoke bottoms with high durability. Background technique [0002] The wheel is a key part of the car, and its durability directly affects the fatigue life of the wheel and the safety performance of the vehicle. The spokes are mainly composed of two parts: a non-rotating structure at the spoke bottom and a rotating structure other than the spoke bottom. There are basically 3-5 inherent structural forms of the spoke bottom of steel wheels. When product developers design products, the spoke bottom generally adopts one of these forms directly. When doing structural optimization design, only the parameters of the rotary structure are selected. Optimization, to find the optimal gyration curve structure, and achieve the purpose of light weight by reducing the thickness of the spoke material under the premise of satisfying the fatigu...

AI Technical Summary

Problems solved by technology

[0002] The wheel is a key part of the car, and its durability directly affects the fatigue life of the wheel and the safety performance of the vehicle. The spokes are mainly composed of two parts: a non-rotating structure at the spoke bottom and a rotating structure other than the spoke bottom. There are basically 3-5 inherent structural forms of the spoke bottom of steel wheels. When product developers design products, the spoke bottom generally adopts one of these forms directly. When doing structural optimization design, only the parameters of the rotary structure are selected. Optimization, to find the optimal gyration curve structure, and achieve the purpose of light weight by reducing the thickness of the spoke material under the premise of satisfying the fatigue performance of the product. However, for several common spoke bottom structures, reducing the material thickness can ensure the spoke The durability of the rotating body structure outside the bottom may not be able to meet the durability of the non-rotating body structure at the spoke bottom. The spoke bottom will fail first, and the durability of the spoke bottom will become the bottleneck of the entire spoke lightweight. How to design a high Durable spoke bottom structure, so that the failure point avoids the bottom of the spoke, the optimal state is obtained by optimizing the structural curve of the gyratory body outside the bottom of the spoke, and the technology that design engineers have been paying attention to is to minimize the thickness of the material to achieve the purpose of reducing the weight of the spoke difficulty

The outer mounting surfaces of the existing spoke bottoms are designed horizontally, but in reality, after loading the bolt pre-tightening force, the spoke bottoms will be deformed to a certain extent, resulting in the outer mounting surface not being able to fully attach to the loading plate, and the contact area is reduced, making the The stiffness and durability of the spoke base will be reduced

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