一、前言 车刚工件的不圆度是由主轴的旋转精度、车刀-工件振动系统的静-动特性、车刀刀头的形状因素来决定的。在历来习用的切削中(如图1a),主轴的旋转中心Ow受到轴承精度的影响在面积Aw内振摆;另外,车刀刀头Ot也由于切削过程中的振动、磨损和刀瘤的产生脱落等原因,在面积at内 First, the foreword Car just pieces of non-circularity is the rotation accuracy of the spindle, turning tool - the static and dynamic characteristics of the workpiece vibration system, the shape of the tool bit to determine the shape. In conventionally used cutting (Figure 1a), the rotation center Ow of the spindle is affected by the bearing accuracy and vibrates within the area Aw. In addition, the tool nose Ot is also caused by the vibration, wear and knives in the cutting process Fall off and other reasons, in the area at