图1所示的工件台阶孔内有一角变为7°30′±2′的圆锥端面C,热处理后,原工艺是在内孔磨床上加工,以端面和内孔找正,先磨两孔φ22_0~(+00.013)和b125_0(+0.01),然后将床头扳转7°30′,使圆锥端面垂直于砂轮轴线,用碗形砂轮的端面靠磨7°30′。在靠磨时,砂轮端面与圆锥端面C的接触呈弧形带状,由于加工接触面积大,切削力大,产生热量多,砂 Figure 1 shows the workpiece step hole angle into a 7 ° 30 ’± 2’ cone end surface C, after heat treatment, the original process is processed in the bore grinder to end face and bore to correct, first grinding two holes φ22_0 ~ (+00.013) and b125_0 (+0.01), and then turn the bed head 7 ° 30 ’, so that the conical end surface perpendicular to the axis of the grinding wheel, grinding wheel with the end face by grinding 7 ° 30’. When worn by the grinding wheel end surface conical end surface C contact with an arcuate strip, due to the processing of contact area, cutting force, produce more heat, sand