Regenerative Chatter during Cylindrical Transverse Grinding

Abstract

In this paper, the workpiece regenerative chatter during cylindrical traverse grinding is theoretically analysed. The depth of cut, which is closely related to the grinding stiffness and the contact stiffness, is assumed to change stepwise in the wheelwork contadt area due to the elastic deformation between the grinding wheel and the workpiece. It is theoretically indicated that the depth of cut of the last step could not be zero. The growth ratio of waves, which are generated on the workpiece surface during successive two revolutions of the workpiece, is derived in order to discuss the stability of grinding process. Theoretical results show that the chatter vibration tends to occur under the grinding conditions such as low traverse speed, high workpiece speed, wide wheel width, and small depth of cut. A few experiments were carried out to discuss the theoretical results. Both results showed qualitatively good agreement.