On the basis of analyzing the tangent press stress at the matrix entrance and the tangent press stress at critical crinkling in the course of the drawing of fleet sphere components.

• 分析了不锈钢锅盖成形工艺,确定了用一副复合模完成落料、浅球形的正向拉伸和低锥形的反向拉伸、冲孔和切边的工序过程。