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一、引言 现代轿车制造业缺少了高生产率的模具制造和压力机制造是不可想像的。轿车制造的发展是从木结构经过半钢结构到全钢结构,最后发展到独立悬挂的全钢结构,这个发展过程对于模具制造有着决定性的影响。 木结构车身是在木质框架外面包一层胶合板,再涂上一层防水的塑料层,因此就不要再涂漆了。 半钢结构的车身是在木质框架外面包一层钢板,用钉子钉牢(图1)。车身钢板是
First, the introduction of the modern car manufacturing industry lack of high productivity mold making and press manufacturing is unthinkable. The development of car manufacturing is from the wood structure through the semi-steel structure to the all-steel structure, and finally to the independent suspension of the whole steel structure. This development process has a decisive influence on the mold manufacturing. The woodwork body is covered with a layer of plywood over the wooden frame and then covered with a layer of water-repellent plastic so that it is no longer painted. Semi-steel body is covered with a layer of steel outside the wooden frame, nailed (Figure 1). Body plate is