目前拖拉机修理厂对发动机曲轴都采取磨削修理的办法。曲轴的磨削加工是在鉴定和校正之后进行的。由于曲辅的工作条件繁重,因此,对曲轴的技术要求比较严格。现在一般修理厂对曲轴进行的磨削加工多数只是满足尺寸公差、表面形状公差的圆度,圆柱度公差和表面光洁度等要求,而对于位置公差往往忽视。这表现在修磨后曲轴法 Tractor repair shop to take the engine crankshaft grinding repair methods. Crankshaft grinding is performed after qualification and calibration. Due to heavy working conditions Qufu, therefore, the technical requirements of the crankshaft more stringent. Now the general repair shop on the crankshaft grinding mostly meet the dimensional tolerances, surface shape tolerances roundness, cylindrical tolerance and surface finish requirements, while the position tolerance is often overlooked. This is manifested in the grinding crankshaft method