按照以往的键槽深度塞规结构尺寸进行加工,易产生热处理变形,且磨削出的圆弧尺寸、表面粗糙度及通、止端尺寸很难达到图纸要求,存在很高的废品率。所以在保证使用要求的前提下改进其结构尺寸,提高了工艺性,降低了加工难度,既减少了成本,又达到了尺寸精度要求,很好地控制了此类量具的加工质量。 According to the structure of the conventional keyway depth plug gauge structure, it is easy to produce heat treatment deformation, and the circular arc size, surface roughness and pass-through and stop-end dimensions are difficult to meet the requirements of drawings, and there is a high rejection rate. Therefore, the premise of ensuring the use of the premise to improve its structure and size, improve the process, reducing the difficulty of processing, not only reduce costs, but also to achieve dimensional accuracy requirements, well control the quality of such measuring tools processing.