关键词: 内孔圆柱度；高斯滤波；圆柱度检测；截面数；有效检测长度

Abstract: In the process of machining, in order to further improve the accuracy of cylindricity measurement and standardize the measurement, the factors affecting the accuracy of cylindricity measurement are studied, and the influence of the selection of Gaussian filter range on the measurement results is obtained. Suitable Gaussian filter range is selected for different cylindrical diameters. The tangent and complement method is used to eliminate the boundary effect in the process of Gaussian filtering. At the same time, the selected section number and axial effective measurement length are explored, and a reasonable selection number and axial effective measurement length are obtained. By optimizing the above factors affecting the cylindricity measurement accuracy, a set of standardized and reasonable inspection methods are provided to improve the cylindricity measurement accuracy in the production process and ensure the reliability of test results, which is of great significance to the quality control of products.

Key words: Inner hole cylindricity; Gaussian filter; Cylindricity measurement; Number of sections; Effective measuring length