床身、体壳等一类零件上有很多地方要装盖子,而这些盖子多半是用3～8个螺钉来固紧的。过去我厂在加工这类零件上的螺孔时,是先划线,再钻孔。在这类零件上钻孔,很难用简单的钻模来代替麻烦的划线工作。我厂设计员王隆西同志设计了弹簧片涨开式占模,经过试验结果成绩良好,不但使用上方便,保证零件质量,而且节省了一道划线工序。 There are many places on the bed, shell and other parts to install the lid, and these covers are mostly 3 to 8 screws to tighten. In the past I plant in the processing of such parts on the screw hole, it is the first crossed, and then drilling. Boring holes in such parts makes it difficult to replace the cumbersome scribing with a simple drill. My factory designer Wang Longxi comrades designed spring-type open-type occupancy mode, after good results of the test results, not only on the use of convenient, to ensure the quality of parts, but also saves a crossed process.