夹具使用到一定程度就会磨损、变形并超出设计的精度要求。故夹具应当定期复检,以决定此夹具是继续使用还是返修或报废。但这项工作长期以来没有一个标准。为此,我厂有关同志进行了一系列的调查研究,制订了夹具磨损变形的极限标准(以下简称《标准》)。下面就《标准》中数据的由来、各类夹 Fixture used to a certain extent will wear, deformation and beyond the accuracy of the design requirements. Therefore, the fixture should be re-inspected regularly to determine whether the fixture is to be used or reworked or scrapped. However, this work has long had no standard. To this end, I plant a comrade carried out a series of investigations and studies, developed a fixture wear and tear of the ultimate standard (hereinafter referred to as “standard”). Following the “standard” in the origin of the data, all kinds of folders