Technique for forming variable cross-section steel wheel rim

Abstract

The invention belongs to the field of design and manufacturing of automobile wheels, in particular to the technique of forming of steel wheels rim with variable cross section, adopting the technique of blanking, circle rolling, flash butt welding, welding slag clearing, multi-channel roll forming, flow turning, finishing operation and punching valve hole to lead product to be formed. By adopting the technique of first rolling then spinning and making full use of plastic deformation characteristic of materials, so that anti-bending fatigue strength, radial fatigue strength and shock resistance of the rim can be improved; the technique of the invention has the advantages of simple technique, convenient operation and easy control, at the same time reducing weight of the rim by 10 to 18 percent, which saves raw materials.

Description

1. Technical field [0001] The invention belongs to the field of automobile wheel design and manufacture, and in particular relates to a forming process of a variable-section steel wheel rim. 2. Background technology [0002] In recent years, the world's major automobile companies have focused on the strategy of competing for the automobile market, while paying attention to the beautiful appearance, they are committed to improving the economy of automobiles, reducing fuel consumption, alleviating the tense situation of energy demand, reducing environmental pollution, and reducing overall costs. , which is the development trend of the automobile industry in the modern world. Among various measures to reduce fuel consumption, the realization of automobile lightweight, that is, reducing the weight of the automobile is the first choice. There are many factors that affect the fuel economy of a car, such as improving the efficiency of the engine and transmission system, reducing r...

AI Technical Summary

Problems solved by technology

Due to the limitation of forming equipment and technology, there is no design and manufacturing technology of variable cross-section steel wheel rim in the current report, only the introduction of thinning spinning technology of equal strength spoke, and no design of equal strength steel wheel rim in China And the introduction of manufacturing technology, while the rolling forming of equal-thickness rims is the main method. Some foreign countries use spinning before the rolling process to spin out several thinner grooves on the steel ring with a uniform thickness. In the subsequent rolling stage, the thickness of the thinned part of the spinning will be increased, and it is easy to cause waste due to the difficulty in controlling the excessive thinning of the fillet