In recent years, the clamping part of the indexable tool body has become more complex. If the rigidity of the clamping part is insufficient for the cutting resistance, the deformation of the clamping part would cause displacement of the cutting edge position, thus leading to deterioration of machining accuracy. Therefore, clarification of the internal stress distribution near the clamping part of the body is essential. In this study, a photoelastic experiment was performed to examine the internal stress distribution of the body during two-dimensional cutting. First, the insert contact state on the peripheral clamping face due to changes in the clearance angle was investigated. Furthermore, the effects of changes in the eccentricity on the internal stress distribution were evaluated. Finally, the influence of the rake angle on the change in internal stress state of the body was investigated.

As fine bubbles have negative zeta potential, it is possible for them to interact effectively with the grinding wheel as an anode during electrolytic in-process dressing (ELID) grinding. This study was performed to investigate the effects of fine bubbles on the surface of a grinding wheel through an ELID grinding test using a grinding fluid containing fine bubbles. First, observation of the behavior of fine bubbles using an ELID system and a high-speed camera confirmed that fine bubble was attracted to the anode during ELID grinding. Grinding tests using a metal-bonded grinding wheel and grinding fluid containing fine bubbles showed that the amount of wear of the grinding wheel was reduced due to a reduction in grinding force. Finally, fine bubbles were confirmed to be efficiently attracted to the grinding wheel during ELID grinding, thus confirming that fine bubbles prevented clogging of the grinding wheel.