在磨制一定半径的凹凸槽,肩部的Fillet、圆角等时,砂轮须用金刚石车制成一定半径之圆弧,舆工作品的圆弧相符。当圆弧的尺寸须相当准确时,必须有一夹定器固定金刚石而作圆弧运动,以在砂轮上车出所需要之半径。(图一)之夹定器能车制凸凹之圆弧面,茲介轺如下:—— Grinding a certain radius of the concavo-convex groove, shoulder Fillet, fillet, etc., the wheel must be made of a certain radius of the diamond car arc, the work of the arc match. When the size of the arc must be fairly accurate, there must be a clamp that holds the diamond in place for a circular arc to yield the desired radius on the wheel. (Figure 1) fixture can be convex and concave car arc, hereby refer to the following: -