Abstract
It is important to know the temperature distribution in a workpiece to understand the curvature of thin plate in surface grinding. In this paper, the relationship between curvature and calculated temperature distribution by FEM was clarified. As a result, it is evident that the steeper temperature gradient the larger concave curvature is induced. This can be understood as an effect of thermal stress. In the case of gentle temperature gradient, the effect of thermal stress is not clear, and consequently burnishing by cutting edge becomes effective. Summarizing these results, the curvature is well explained with temperature gradient and burnishing effect. The transformation of 304 stainless steel is confirmed by means of X-ray diffraction test, and the influence of transformation on curvature is studied. Key words: surface grinding;superabrasive wheels;thin plate;curvature, temperature distribution;force ratio;transformation.
