INFLUENCE OF NORMAL FEED ON SURFACE ROUGHNESS IN NEWLY DEVELOPED ULTRA-SMOOTHNESS GRINDING METHOD

摘要

The main conclusions obtained are as follows: (1)Below the critical normal feed, the surface roughness of ground silicon carbide ceramic and cemented carbide becomes below H_(r(3D))=60nm (Rz).rn(2) Beyond the critical normal feed, the surface roughness begins to deteriorate steeply to a certain value in both cases of ground cemented carbide and silicon carbide ceramic.rn(3) Beyond the critical normal feed, grinding grooves or cracks begins to occur on the ground surface of cemented carbide or silicon carbide ceramic.