Abstract
Bending moment produced on the vertical section of a workpiece is experimentally investigated under wet grinding. Measured results are compared with the theoretical ones obtained by a finite element method. The thermal deformation of a workpiece attracted by a magnetic chuck is also calculated considering the film boiling phenomenon of grinding fluid and the results are compared with the profiles of ground surfaces. The main results obtained are as follows: (1) When the film boiling does not occur, the grinding fluid effectively restricts the thermal deformation; therefore, the workpiece of good straightness can be easily obtained. (2) When the film boiling occurs under up-grinding, the cooling action is still effective in restricting the thermal deformation, but it is not effective under down-grinding. Therefore, the profiles of wet-down ground surfaces are almost the same as dry ground surfaces.
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