Metal sheet Stamping forming is an important material forming process, especially in the automobile industry. Using the advanced FEM simulation technology, precise analysis of the metal sheet stamping forming process becomes possible, which provides the scientific evaluation of the process design and die design in sheet stamping forming. So the paper chooses a topical auto drawing part-auto indoor-still part and applied the CR340LA steel to have stamping numerical simulation test by the numerical simulation analyzing software-Dynaform. In the stamping numerical simulation test, the best binder holder force values, stamping speed values and the spring back forecast results are got. Then the springback forecast results of the numerical simulation analysis tests are applied to the actual production to overcoming the spring back effectively, and the successful products are got.
If the weight of automobile wheel is not equally distributed, the automobile is not safe in high speed running. Hence, before the automobile wheel is instated, the dynamic balance of automobile wheel must be done, and the wheel balancer is added to the small weight position. In general, each wheel is added with two wheel balancers at least. Lead wheel balancers are used worldwide to balance vehicle wheels. But lead presents a health hazard, because lead is highly toxic, can contaminate drinking water, and can reduce intelligence in children. The steel wheel balancer is the perfect choice. However, the steel balancers are difficult to form and easy to rust. Based on upper limit analysis and numerical simulation, technology optimization and die design of steel balancer are studied to enlarge the production and to decrease the cost
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