相对公差等级法解尺寸链

Solve the dimensional chains with the methods of the relative tolerance grade

目前在解尺寸链设计计算方面,常沿用“等公差法”或“等公差等级法”,而后依据各组成环功能要求及其结构的工艺性进行适当的调整。有时,这种调整数值可能很大。现在此文介绍一种依据各组成环的功能要求及其结构的工艺性预先假定各组成环的公差等级系数进行计算,然后再进行圆整式的调整,这样才比较合理。

There are the solutions in design of the dimensional chains with the m-ethods of 'the equal tolerance' or 'the equal tolerance grade' usually Then readjust the result values in accordance with their functional relatio-n and composition technologies in the consistinp links, That readjustments may be rather large sometimes. Now, This paper introduce the compute That assume their tolerance unit coefficients of each consisting link member in advance according to their functional relations and compostion technologies, Then round the result to the reasonable values.