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ISO标准规定了用最小区域法来评定圆度和圆柱度的误差值。本文给出了符合这种定义的计算方法,先拟定一组原始数据,通过计算,指出了圆柱度误差值的实际上的唯一性和相对不同位置的轴线的最大最小半径差值分布的单调性。采用逐次逼近法,利用计算机从一个初始值出发,自动地找到这组数据的圆柱度误差值。再从几个不同的初始值出发找到了同一个圆柱度误差值。从而实现了符合ISO标准的圆柱度误差值的计算。按照本文的方法,只要给出零件表面测点的相对空间位置,就不需要测量仪器在测量零件时进行繁琐的精密调偏心和调倾斜。本文介绍如何根据一组数据求得检测对象的圆度和圆柱度误差值的方法
ISO standard specifies the minimum area method to assess the roundness and cylindricity error value. In this paper, we give a calculation method that accords with this definition. Firstly, we draw up a set of original data. Through calculation, we point out the monotonicity of the actual uniqueness of the cylindricity error value and the distribution of the maximum and minimum radius difference of the axis in different positions . Using successive approximation method, using the computer starting from an initial value, automatically find the cylindricity error value of this group of data. Then from a few different initial value to find the same cylindrical error. In order to achieve the ISO standard cylindrical error calculation. According to the method of this article, the measurement instrument does not need to perform complicated fine adjustment of eccentricity and inclination when measuring the relative spatial position of the measuring point of the surface of the part. This article describes how to obtain a test object based on a set of data circularity and cylindricity error method