本文叙述了机械制造中加工误差的相关分析法基本理论和具体应用。根据概率论及数理统计学原理,给出了回归直线方程及相关系数的计算公式,通过多刀粗车曲轴外圆面生产实例分析了尺寸加工误差的相关性以及它们同工艺上的联系。 This paper describes the basic theory and application of the correlation analysis method of machining error in machining. According to the theory of probability and mathematical statistics, the formulas of regression equation and correlation coefficient are given. The correlation of the dimensioning errors and their connection with the process are analyzed by the example of the production of the cylindrical surface of the multi-tool roughing crankshaft.