论文部分内容阅读
各种曲面零件的成形在冲压生产中占有相当大的比例。成形中毛坯的变形特点和应力数值与分布的规律都不同于圆筒形零件,所以不能作为一般的拉深变形看待,而且各种冲压工艺参数(如成形的极限、压边力等)的确定和冲模设计的原则也都有它自己的特点。由于冲压零件的厚度不同,在生产中采用两种方法加工曲面零件:零件的相对厚度较大时,冲压过程中毛坯
The forming of various curved parts occupies a considerable proportion of the stamping production. The deformation characteristics, stress distribution and numerical values of the blanks in forming are different from those of cylindrical parts, so they can not be regarded as general drawing deformations, and various stamping process parameters (such as forming limit and blank holder force) are determined And die design principles also have their own characteristics. Due to the different thickness of the stamping parts, two methods are used in the production of curved parts: the relative thickness of the parts is large, the blank during stamping