在汽车的冲压件中,许多具有空间形状,如五吨车的翼子板、水箱面罩等大零件和各种局部的加强板及成形件。本文所指的冲压件,主要就是指这类具有空间形状的冲压件。这些冲压件是由原来的一张金属板料,经过拉延、成形、修边、冲孔、翻边等几道冲压加工成汽车零件的。这些冲压件或者相互间,或者与汽车上的其它部件有形状和孔位的相对装配关系。由于冲压件与机械加工零件相比,刚度较差,变形较大。因此,如何检查冲压件 Among the stamping parts of automobiles, there are many large parts such as a fender, a tank face mask, and various local reinforcing plates and formed parts having a space shape such as a five-ton vehicle. This article refers to the stamping parts, mainly refers to such a space shape of the stamping parts. These stampings from the original sheet metal, after drawing, forming, trimming, punching, flange and several stamping into the car parts. These stampings have either a relative mounting relationship with one another or with other components on the vehicle in shape and hole location. As the stamping parts and machined parts compared to poor rigidity, deformation larger. Therefore, how to check the stamping parts