在設計机床夹具时,如何合理的去确定它的公差,是一件非常重要的工作。它直接影响着夹具的制造成本和使用效果。更重要的是通过夹具中这些合理的公差来保証产品的尺寸公差和技术要求。到目前为止,确定机床夹具的公差时,系完全靠設計員的經驗来确定,这就不可避免地会产生一些不合理現象。結果,給夹具的制造增加了一些困难;或者由于夹具中某些公差規定的不够合理,而使夹具不能如意的用到生产中去,不得不 In the design of machine fixtures, how to determine its tolerance reasonable, is a very important task. It directly affects the fixture manufacturing costs and the use of results. More importantly, the dimensional tolerances and technical requirements of the product are guaranteed by these reasonable tolerances in the fixture. Until now, determining the tolerances on machine tool fixtures was based entirely on the designer’s experience, which inevitably led to some irrational behavior. As a result, some difficulties are added to the manufacture of the jig, or the jig can not be used in production due to unreasonable provisions of some tolerances in the jig,