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《光滑极限量规》新国标中所规定的公差是根据《公差与配合》标准规定的极限尺寸判断原则(即不超极限原则)制订的,而直线尺寸量规公差(即高度、深度及长度量规,‘不含长度塞片及卡规’)目前还尚未制订新标准,仍沿用过去的超极限公差原则。这对全面地贯彻新国标是极不利的。为解决这一问题,我厂制订了《直线尺寸量规公差》企业标准,通过生产实践证明是行之有效的。现将制订原则及有关内容简介如下,供同行的同志参考。
The tolerances specified in the new national standard of “smooth limit gauge” are based on the principle of limit size judgment (ie not exceeding the limit principle) stipulated in the standard “Tolerance and cooperation”, while the linear gauge gauge tolerances (ie height, depth and length gauge, ’There is no length of the plug and the card gauge’) There is no new standard yet, still using the past, the principle of extreme limit tolerances. This is completely unfavorable to implement the new national standard. In order to solve this problem, our factory has formulated the enterprise standard of “Linear dimension gauge tolerance”, which proved to be effective through production practice. The principles and relevant contents of the book are as follows, for the comrades for reference.