Abstract
This paper describes a new criterion to determine the wheel redress life in fine cylindrical plunge grinding. In most cases of dressing using a single point diamond dresser a thread is generated on the wheel face, and the thread, changing its form with the lapse of grinding time, finally disappears. In fine cylindrical plunge grinding the wheel face profile is printed on to the workpiece surface and the same thread is generated on it. The wheel redress life based on the new criterion is determined as follows : changes in the ground surface profile with the lapse of grinding time are pursued by means of spectrum analysis, and when the thread caused by dressing disappears, it is considered that the wheel has just reached its wheel redress life. A few experiments were carried out to compare the new criterion with the criteria heretofore in use, and the new criterion gave almost the same wheel redress lives as those based on the normal grinding force or the radial wheel wear.
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