Abstract
When a groove is produced on the surface of the metal with a grain edge, the side regions of the groove swell out due to plastic deformation, and the groove depth becomes smaller than grain cutting depth due to elastic recovery. In this paper, the influence is discussed of such elastic and plastic deformation at the tracks of the grains on the formation of surface roughness in the grinding process. Firstly, the experiments are performed of the grinding with single cutting point of the conical diamond for various kinds of metals, in order to determine the ratio of swell-out hight ηs and the ratio of elastic recovery ηr of the grinding grooves, and then, the relation of these parameters to ground surface roughness is investigated analytically and experimentally. As a result, it is found that the relationship between the parameters ηs, ηr, actual ground surface roughness Rsr and theoretical ground surface roughness Rgeom can be expressed by the following equation.Rsr= {1+0.23 (ηs-ηr)} Rgeom
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