测量圆柱形工件,如精密主轴、轴承滚柱(针)及曲轴轴颈等的椭圆度和不圆度的方法主要有[1]:直径法、圆周界限量规法、在顶尖上旋转测量法、三点测头测量法、V形铁测量法和精密主轴测量法(圆度仪、万能测量机)等六种。而目前国内外广泛应用的不圆度测量方法是用圆度仪测量和V形铁 Methods of measuring ovality and out-roundness of cylindrical workpieces such as precision spindles, bearing rollers (pins) and crankshaft journals are mainly [1]: Diameter method, Circumference limit method, Rotation measurement method at the top, Three-point probe measurement method, V-shaped iron measurement and precision spindle measurement (roundness meter, universal measuring machine) and other six. At present, widely used non-circularity measurement method at home and abroad is to use roundness meter to measure and V-shaped iron