1.前言 以获得精密冲裁件为目的而发展的高速冲裁,已有很多研究报告,其结论是,对钢作高速冲裁特别地具有显著效果,可以获得变形小而良好的制件。然而尽管它显示了这一优越性,但是目前高速冲裁在生产现场却没有应用得较好的例子。其原因可以说是与其竞争的精冲已经具有实际成绩,另外是廉 1. INTRODUCTION There have been many reports of high-speed blanking that have been developed for the purpose of obtaining precision blanking pieces. The conclusion is that particularly high-speed blanking of steel is particularly effective with small deformations and good parts. However, although it shows this superiority, there is currently no good example of high-speed blanking at the production site. The reason can be said to compete with the fine blanking has been the actual results, the other is cheap