研削面端末部の形状変化に関する研究 (第6報)

横バリの生成機構について

抄録

This paper deals with a formation mechanism of the side burr on the workpiece end by using a finite element method and an experimental method. In the calculation, grinding temperature and cutting force in the contact zone are considered. Therefore, the thermal and mechanical stress distribution of the workpiece end are derived. The grinding is carried out to clarify the effect of work speeds, depth of cut and number of grinding passes on the burr size. The main results obtained are as follows : (1) The grinding temperature causes a plastic deformation on a workpiece-surface layer, while it is not enough to produce a macroscopic plastic flow. (2) The plastic flow is produced mainly by the grinding force. (3) In the vicinity of the workpiece end, the plastic-flow layer is expanded at an angle of 34-42° with respect to the grinding direction. The results show a similar tendency with experimental ones.