增设强压功能。即对卸料镶块压料部加厚尺寸(正常的卸料镶块厚H 0.03mm)，以增加对凹模侧材料的压力，从而***冲切时冲压件产生翻料、扭曲变形。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。
日常模具生产中，应注意维护冲切凸、凹模刃口的锋利度。当冲切刃口磨损时，材料所受拉应力将增大，从而冲压件产生翻料、扭曲的趋向加大。
五金冲压件材料的硬度检测，其主要目的就是确定购入的金属板材退火程度是否适于随后将要进行的冲压件加工，不同种类的冲压件加工工艺，需要不同硬度级别的板材。
stamping material hardness testing, the main is to determine whether the purchase of metal sheet annealing is suitable for subsequent stamping parts processing, different types of stamping processing technology, the need for different hardness levels of the plate.
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.
将闭合的模具放置于雎力机工作台或垫板上适当位置，如果使用气垫，先要放好顶杆，并标记好模具的摆放位置。
手动扳动冲压机床飞轮（或操纵点动按钮），使机床上滑块下行并停于下死点位置。
Place the closed mould on the bench or pad of the mandrel machine. If the air cushion is used, the ejector pin should be placed first and the placement of the mould should be marked.
Manually pull the flywheel of the stamping machine (or the moving button), so that the slider on the machine tool will be downhill and stop at the bottom dead center.