条料变形步距精度保证技巧

Step away from the deformation of materials to ensure accuracy skills

级进模的冲压质量是由步距精度决定的。步距精度主要依靠导正钉和条料上的导正孔相互配合来保证。当条料不可避免地受到拉扯或挤压产生变形时，会引起导正孔变形和中心位置偏移而失效，同时也使后面各工位上的导正钉失去了存在的意义。针对以上问题，我们在设计研发基板类级进模时，最终摸索出了一套行之有效的解决办法，完成了模具开发任务。本文的经验总结能供模具设计者借鉴。

Progressive Die Stamping by a step away from the precision quality is determined. Stepping accuracy and rely mainly on the guide strip is nailed on the guide hole being with each other to ensure that, when the strips are pulled or squeezed inevitably produces deformation, often cause deformation and the center hole is offset and void but also to the back of the station is on the lead screw lost its meaning. To solve the above problem, we developed in the design of the substrate type progressive die, the end worked out a set of effective solutions, to complete the mold development tasks. This paper summarizes the experience for mold designers can learn from.