In this paper, a new griding method is introduced to calculate strain and stress contour for rear wheel cover of CA142 truck and the reasons for stamping defects are analyzed.

An introduction was made on the design of the essential processing drawing and the part_processing procedure drawing, the selection of the pressing direction, the makeup design of the technological process, and the location of the drawing ribbings in designing the pressing process of the front part of the right_rear wheel hood of Fukang cars.