Abstract
The wear process of grinding wheels is discussed by the following methods.1) The value of tan a is calculated by measuring the normal grinding force, where a is the half apical angle of the cone assumed to keep with ability of grain tips. On the basis of this result, the variation of the mean shape of grain tips is discussed.2) The profile curve of mild steel surface ground under constant conditions is measured by use of a tracer instrument. By measuring the Abbott's bearing curve and the maximum height of its profile, the variation of the number of grain tips in a wheel is discussed.3) Autocorrelation function is calculated for the above profile curve. On the basis of this result, the variation of the pitch of grain tips is discussed.4) The number of times that the above profile crosses the center line is counted. On the basis of this result, the variation of the shape and the pitch of grain tips is discussed.
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