Abstract: Vibration of lapping machine is an important influencing factor on the lapping quality of diamond cutting tools in mechanical lapping, especially in the precision lapping process. In order to improve the lapping quality of diamond cutting tools, the air vibration isolators are used for lapping machine tool during the precision lapping procedure. Measured results show that the cutting edge radius of lapped diamond cutting tool is reduced from 93.8nm obtained without isolators to 72.7nm, and the surface roughness of rake face is reduced from 2.4nm to 1.0nm. The lapping quality is improved obviously.

Key words: diamond cutting tool, cutting edge radius, vibrating isolation, mechanical lapping