一、特大凹圆弧的磨削要在一块平面工件上磨削出凹圆弧面,通常用与圆弧相当的成形砂轮进行成形磨削或用平形砂轮进行摆动磨削,然而要加工大尺寸的R圆弧面,如半径R为1600mm以上的凹圆弧(如图1所示),用上述工艺手段,显然困难很大。用杯形砂轮切削刃面平行于工件平面磨削时,工件平面被均匀地磨去一层,仍为平面状;当怀形砂轮 First, the large concave arc grinding To a concave workpiece in a flat surface, usually with a circular arc forming grinding wheel grinding or flat grinding with a grinding wheel, but to process large size Of the R arc, such as the radius R of more than 1600mm concave arc (shown in Figure 1), with the above means, obviously very difficult. With the cup-shaped grinding wheel cutting edge parallel to the workpiece surface grinding, the workpiece surface is evenly ground to a layer, is still planar; when the grinding wheel