一般在数控线切割机上加工工件都是一次装卡,在一个平面内切出所需要的零件一“直通”凸模或凹模。但在模具生产中,特别是在固体电路引线级进模中,凸模尺寸太小,刚度不好。我们改革了凸模设计结构,做了一套定位卡具,对工件采取两次装卡,在相互垂直的两个平面上切割而获得所需要的凸模。几年的实践效果很好。兹以最近加工的“P-24”黑白电视电路引线级进模中 General CNC cutting machine on the workpiece is a loading card, in a plane cut out the required parts of a “straight” punch or die. However, in the production of molds, especially in the solid-state lead-level die, the punch size is too small and the rigidity is not good. We have reformed the punch design structure, made a set of positioning fixtures, loaded the workpiece twice, and cut the two planes perpendicular to each other to obtain the required punch. Years of practice works well. Here’s the latest lead-in “P-24” black and white TV circuit