压住材料。克服传统的模具设计结构，在卸料板上开出容料间隙(即模具闭合时，卸料板与凹模贴合，而容纳材料处卸料板与凹模的间隙为材料厚t-0.03～0.05mm)。如此，冲压中卸料板运动平稳，而材料又可被压紧。关键成形部位，卸料板一定做成镶块式结构，以方便解决长时间冲压所导致卸料板压料部位产生的磨(压)损，而无法压紧材料。

Press the material. In order to overcome the traditional mold design structure, the clearance of material is opened on the discharge plate (i.e., when the die is closed, the discharge plate and the die are fitted, and the gap between the discharge plate and the die is t-0.03 to 0.05mm). In this way, the discharging plate moves ***oothly, and the material can be pressed tightly. In the key forming part, the discharge plate must be made into an inlaid structure to facilitate the solution of the grinding (pressure) loss caused by the pressing part of the unloading plate for a long time, and the material can not be pressed.

冲压件是靠压力机和模具对板材、带材、管材和型材等施加外力，使之产生塑性变形或分离，从而获得所需形状和尺寸的工件（冲压件）的成形加工方法。冲压和锻造同属塑性加工（或称压力加工），合称锻压。

Stamping is a forming and processing method for workpiece (stamping parts) by applying external force to plate, strip, pipe and profile by press and die to produce plastic deformation or separation. Stamping and forging belong to plastic processing (or pressure machining).

凸模刃口端部修出斜面或弧形。这是减缓冲裁力的有效方法。减缓冲裁力，即可减轻对凹模侧材料的拉伸力，从而达到***冲压件产生翻料、扭曲的效果。

The end of the punch is repaired with a bevel or arc. This an effective way to slow down the blanking force. By reducing the force of buffer, the tensile force of the side material of the die can be reduced, so that the stamping and twisting effect can be suppressed.