抄録
An attempt was made to break chips produced by NC turning by intermittently decelerating the finish cutting speed. A personal computer was sued to control intermittent deceleration. The programming software is also developed to automatically create NC instructions by given data related to the interval of fee, decelerated feeding, tool and cutting condition with a personal computer. As a result, it was found that by optimizing the interval between decelerated feeding and rate of deceleration, chips will be broken into easily disposable smaller pieces.
