最近我们设计试用了一种新型的车床与外圆磨床心轴(见图)。它由两个薄壁套2组成,其作用原理如下:螺帽4通过垫圈3压紧薄壁套2,使薄壁套两锥形端受压变形,从而使薄壁套外径变大,将工件定心和夹紧;其内径减小而使薄壁套压在心轴1上。 这种心轴比一般心轴(如整体心轴、弹簧筒夹的重 Recently, we designed and tested a new type of lathe and cylindrical grinding spindle (see photo). It consists of two thin-walled sleeve 2, its principle is as follows: The nut 4 is pressed against the thin-walled sleeve 2 by means of the washer 3, so that the tapered end of the thin-walled sleeve 2 is subjected to pressure deformation so that the outer diameter of the thin- The workpiece is centered and clamped; its inner diameter is reduced and the thin wall is sheathed against the mandrel 1. Such mandrels than the average mandrel (such as the overall mandrel, spring collet weight