在机械制造中,有一些要求通孔的挤压件,用什么方法把挤压成杯形的零件去底后,既能保证零件的工艺尺寸和光洁度,又能保证零件的精度和提高材料利用率。沈阳市链条厂从1982年开始,对这一问题进行了试验和研究,以链条滚子反挤压成形去底为例,简介三种不同的加工方法。 In machinery manufacturing, there are some requirements of the through-hole extrusion, the method used to squeeze the cup-shaped parts to the end, both to ensure the size of the parts and finish, but also to ensure the accuracy of parts and improve material utilization rate. Shenyang chain factory from 1982 on the issue of testing and research to reverse the chain roller anti-extrusion forming the end, for example, the introduction of three different processing methods.