Abstract
A new simple method for evaluation of adhesion in cutting is proposed. Instantaneous directions of the chip flow and coefficients of friction are calculated from the dynamic cutting force. Adhesion in cutting is evaluated by the adhesion index which is the multiply of the deviation of the directions and the coefficients. We also conducted turning tests of a Ti-6Al-4V alloy bar with cemented carbide tools and evaluated their wear. The deviation of the chip flow direction and the instantaneous frictional coefficient in intermittent cutting was about twice as large as in continuous cutting. The tool wear rate had the correlation with the adhesion index in a low cutting-speed range.
