最近我们应用聚氨酯橡胶冲模,比较成功地解决了薄板料的落料冲孔问题。我厂产品中有0.05mm板厚的刮片零件和0.08mm板厚的隔片零件。其形状见图1。它们是产品中的关键零件,其形状比较复杂,对冲制的毛刺要求较严,而且生产批量大。我们原使用普通钢模冲制,由于材料极薄,冲裁间隙很小。通常称为“无间隙冲裁”,模具制造特别困难。即使采用凸凹模淬火,凸模、凹模调质处理用铆刀口的办法,仍然不能很好地保证间隙以及间隙的均匀性。再加上一 Recently, we use polyurethane rubber stamping die, the more successful solution to the sheet blanking punching problems. I plant products have 0.05mm thick blade parts and 0.08mm thickness of the spacer parts. Its shape is shown in Figure 1. They are the key parts of the product, its shape is more complex, hedging burr requirements more stringent, and the production volume. We used the original steel stamping system, due to the extremely thin material, punching a small gap. Often referred to as “gapless blanking,” mold making is particularly difficult. Even if the use of punch and die quenching, punch, die quenching process with rivet mouth approach, still can not properly ensure the gap and the gap uniformity. Plus one