Abstract
The lapping simulation barely has been studied to correct the surface profile of workpiece. On the other hand, the polishing simulation was developed using the gap theory and it was clarified that the simulated results agreed well with experimental results. This paper describes about the key parameter to apply the polishing simulation to lapping. The experimental results during a transitional period of lapping from the only corner part to the whole surface were compared with the simulated results using the gap theory. It was shown that the relative elastic coefficient reduces with the decrease of the gap between the tool and the workpiece, and converges to a constant value. The convergent value increases with the inclination of a surface plate, but does not change with grain size. The lapping simulation using the gap theory becomes possible if the suitable coefficient is used.
