上海机床厂生产的 MB82 60 A曲轴磨床 ,其加工精度指标是 :轴径的圆度为 0 .0 1 mm,圆柱度为0.0 0 8mm。而目前多数曲轴的圆度、圆柱度要求都为 0 .0 0 5mm,为了满足生产精度的要求 ,必须对机床进行提高精度的改造。影响 MB82 60 A曲轴磨床加工精度的因素很多 ,但最主要的是曲 The MB82 60 A crankshaft grinder produced by Shanghai Machine Tool Plant has the following machining accuracy indexes: the circularity of the shaft diameter is 0.011 mm and the cylindricity is 0.0 0 8mm. At present, most roundness and cylindricity requirements of crankshafts are all 0,050 mm. In order to meet the requirements of production precision, it is necessary to improve the precision of machine tools. There are many factors affecting the machining accuracy of the MB82 60 A crankshaft grinder, but the most important one is the song