Integrated plate welded-joint-free vehicle wheel and forming method of integrated plate welded-joint-free vehicle wheel

Abstract

The invention discloses a forming method of an integrated plate welded-joint-free vehicle wheel. The forming method includes the following steps: conducting rolling, preliminarily forming a rim and spokes, conducting roll forming, and conducting compression shaping to manufacture the integrated plate welded-joint-free vehicle wheel. According to the forming method of the integrated plate welded-joint-free vehicle wheel, due to the fact that the plate welded-joint-free vehicle wheel is formed through cold rolling, cold roll forming and cold extruding, energy consumption is reduced by 45% to 55%, and the material cost is reduced by 5% to 15%; meanwhile, the strength of the vehicle wheel is improved by 20% to 30%. By means of the forming method, the unequal-thickness vehicle wheel which is unequal in section thickness and meets the mechanical strength requirement at the same time can be formed in a cold rolling mode; in addition, the accuracy grade of the vehicle wheel can be greatly increased, and the deflection amount and the jerk amount of the vehicle wheel are reduced to be minimum; in addition, the vehicle wheel produced with the method is better in safety performance, and the conventional air-tight test is not needed; correspondingly, the invention further discloses the integrated plate welded-joint-free vehicle wheel manufactured with the forming method of the integrated plate welded-joint-free vehicle wheel.

Description

technical field [0001] The invention relates to a method for manufacturing auto parts, in particular to a method for manufacturing a wheel with no welded seam on a plate. Background technique [0002] The existing plate wheel manufacturing method is to manufacture the wheel rim and the spokes respectively, and then synthesize and weld the manufactured wheel rim and the spokes together to form the wheel. The specific process includes: [0003] Rim production: R-1 decoiling; R-2 flattening; R-3 butt welding; R-4 round; R-5 butt welding; R-6 slag scraping; R-7 end cutting; 10 Three-process cold-rolled forming; R-11 expansion and sizing; R-12 punching valve hole. [0004] Production of spokes: D-1 decoiling; D-2 ​​flattening; D-3 lower material; D-4 multi-station pressing; D-5 reverse stretching; D-6 punching; D-7 extrusion center hole and screw holes. [0005] Synthesize the rim and spokes into a wheel: A-1 positioning raceway; A-2 press fit rim and spoke; A-3 synthetic wel...

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the existing procedures for producing plate wheels are very complicated, and the above-mentioned procedures do not include some auxiliary procedures, and there are more than 20, so its production efficiency is relatively low.

In addition, the plate wheels produced by this process are subject to complicated air tightness checks, which further reduces production efficiency

[0007] In addition, if figure 1 As shown, the plate wheel produced according to the above process has a weld 3 between the rim 1 and the spoke 2, and also has a rim-to-weld 4. Therefore, the overall strength and rigidity of this wheel are not very good. 3 and 4 of the rim butt weld are prone to fatigue fracture

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