Abstract
A new truing technique with the cup-truer proposed in the previous paper has proved effective on diamond vitrified wheels. In this paper the performance of the cup-truer in truing peripheral wheels is examined in detail. The main results obtained are as follows : (1) The traverse feed of the cup-truer across a diamond wheel produces a tapered periphery of the wheel. This may be the same for any other kind of tool in so far as it is used in a similar manner. (2) Plungecut truing, i. e. the truing process with a reciprocating feed without a cross-feed of a cup-truer, provides a straight, taper-free periphery of the wheel by adjusting the cup-truer axis, perpendicularly to the grinder table. By tilting the cup-truer axis, moreover, tapered peripheral diamond wheels also can be trued. (3) In plunge-cut truing the smaller wheel speed or the larger truer feed speed gives the greater truing ratio. Truer rotating speed does not influence the truing ratio appreciably. (4) Excessive wheel speed in truing makes diamond abrasive edges dull.
