图1为万能工具显微镜的精密顶尖接轴,内锥度为2°53′30″,对φ20外圆的不同心度要求为0.001毫米,φ20外圆为精密配制。为保证该零件的圆柱圆锥形同心度,如用图2的弹簧压板式工具进行加工,可在一般磨床上很容易达到这个要求。加工前先将工件一端的中心孔研好,并精研工件外圆,使其不圆度误差小于0.0004毫米。然后将工件装在工具2上,用弹簧10及螺钉4压在顶尖3上,同 Figure 1 is a universal tool microscope precision top shaft, the taper is 2 ° 53’30 ", the outer diameter of φ20 concentricity requirements of 0.001 mm, φ20 cylindrical for the precision preparation. To ensure that the cylindrical conical Concentricity, as shown in Figure 2, spring platen tool for processing, can be easily achieved in the general grinder this requirement .Before processing the workpiece center hole at one end of the research, and precision cylindrical workpiece, so that its non-roundness The error is less than 0.0004 millimeters and then the workpiece mounted on the tool 2, with the spring 10 and the screw 4 pressed on the top 3, with