中文摘要：

分析了汽车底盘高强度支撑板零件的冲孔、镦倒角工艺的难度，对影响厚板冲压件小孔成形的凸模损坏形式，包括制造工艺、各种断裂方式（折断、拉断等）、纵向裂纹、掉块和变形等进行了分析，找到了凸模长度、凸模材料及冲压设备的使用对影响凸模寿命的主要因素，并提出了在模具设计、材料选取、制作工艺，包括模具保养、模具润滑，生产设备等方面的解决办法，提高了冲压件小孔成形的凸模的使用寿命，产品质量，同时实现了该产品的批量生产。

英文摘要：

Chassis strength was analyzed support plate the punching,forging a chamfer machining difficult effect on plate stamping forming punch small holes damage form.Including the manufacturing process,a fracture （broken,snap,etc）,the longitudinal crack,and deformation analyses,found a stamping punch in punch.It put forward solution in the mold design,material selection,production process,production equipment in order to improve the stamping forming service life of the punch holes,the quality of our products,and the mass production was realized.