2015 Volume 59 Issue 11 Pages 637-642
The differences between a new truing method using the corner end of a polycrystalline diamond (PCD) rotary truer and conventional methods utilizing a diamond rotary truer were investigated from the viewpoint of contact behavior between the truer and CBN grains.Theoretical analysis indicated that the PCD rotary truer makes uniform contact with the CBN abrasive grains, whereas the contact area between the truer and CBN grains is much smaller than that of the conventional rotary truer, because the PCD rotary truer has a markedly sharp corner end. The contact behavior of the new truing method is close to the single-point dresser, and micro-cutting edges are formed by transferring the sharp corner end of the PCD truer. Micro-cutting edges formed by the new truing method achieve low grinding force and a fine ground surface.
