基于形位公差的公差原则在尺寸链中的应用

摘要

In this paper, the relationship between dimension tolerance and geometric dimension are described, applicable ran-ges of different tolerance principles in design are analyzed , and processing methods for geometric tolerance under the different tolerance principles are introduced.By example analysis and calculation, increasing and decreasing of the geometric tolerance is determined according to assembly relationship , and asymmetric geometric tolerance can′t blindly serve as a decreasing link to be leaded into assembly dimension chain.%阐述尺寸公差与形位公差的关系，分析不同公差原则在设计中的适用范围，介绍形位公差在不同公差原则下的处理方法。通过实例分析计算，应根据装配关系，确定形位公差的增减性，非对称形位公差不能盲目地作为减环引入装配尺寸链中。