In the case of different methods for ensuring the assembly accuracy,some problems should be paid attention to when ascertaining composed link dimension tolerance by using assembly dimension chain.

• 针对保证装配精度的不同方法,指出在机械产品设计中用装配尺寸链确定组成环尺寸公差时应注意的问题,用实例说明了在机械产品的装配、修配及维修过程中尺寸链的分析方法。