【摘要】 精密机械产品的发展要求具有高性能、高可靠性和高质量。如果用设计时减小公差的方法来保证精度，则将难以解决加工和装配中产生的问题。因此需要在采用尽可能大的公差值的情况下满足精度要求。本文将讨论一些实例．寻找借助于统计尺寸公差降低加工精度要求的办法。更多还原

【Abstract】 A precise mechanical product demands optimal performance, increasing reliability andbetter quality. If these are ensured by means of closer tolerance in the design phase, the considerableproblems in the production and assembly period will be brought. It is reasonable that thesecharacteristics should be met with in the tolerance as wide as possible. The method discussed in thispaper using statistical tolerance is a practical way.更多还原