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1前言求解直线度误差，通常采用首尾连线法近似计算，一般情况下结果偏大，不符合最小条件。但用人工求解符合最小条件的直线度误差，比较复杂，特别是“极值点”的选择，往往要经过多次选择，反复旋转和计算，才能得到符合最小条件的直线度误差，效率很低。本文介绍的求解直线
1 Introduction Solving the straightness error, usually using approximation end to end connection method, under normal circumstances the result is too large, does not meet the minimum conditions. However, it is more complicated to manually solve the straightness error that meets the minimum conditions. In particular, the choice of “extreme point” is often subject to multiple choices, repeated rotations and calculations to obtain a straightness error that meets the minimum requirements and is inefficient . This article describes the solution of straight lines