Abstract:

Chip flow angle is an important characteristic parameter in the metal cutting process. However, there are no systematic studies on the chip flow angle of the double-edge oblique cutting with nonzero nominal rake and inclination angles. In this paper, a cutting model was established to describe the chip flow angle of double-edge oblique cutting with nonzero nominal rake and inclination angles, and, two derivative models were deduced from the model respectively for the cutting depth and the feed. Then, the rules of the variation of chip flow angle with the nominal rake angle, the fixed angle, the tool-included angle, the cutting depth and the feed were systematically investigated and further verified by experiments. As the theoretical results accord well with the experimental ones, it is concluded that the proposed model is feasible in predicting the chip flow angle of the double-edge oblique cutting.

Key words: chip flow angle, double-edge oblique cutting, cutting model, cutting energy, minimum energy principle