The destabilization condition in plastic state, the main causes of wrinkling and the pre ven tion means in the sheetdrawingprocess of tube-shaped parts have been intro duced.
介绍了薄板拉深筒形件的塑性失稳条件，起皱的主要原因及防止措施。
2
The system can solve dimensional linkage, calculate man-hour quota, make operation drawing, and print out the operation sheet and the process route sheet of a part.
该系统能进行尺寸链解算，计算工时定额，绘制零件工序图，打印输出零件工序卡和工艺路线卡。
3
The author proposed a method based on feature technology which can create correct unfolding drawing of sheet metal parts with plenty of process information.