Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : February 28, 2017 - March 03, 2017
This paper presents the result of a systematic dry hobbing experiment to examine the influence of cutting speed on the tool life and machining performance for a TiN-coated HSS hob. The hobbing experiments were performed under different cutting speeds from 100 m/min to 300 m/min. Some important machining items related to the tool life, for example, the influence of instantaneous cutting temperature, the characteristics of hob wear, the chip deformation and the effect of chip crush behavior are discussed in detail. The importance of the cutting speed employed in a dry hobbing process is verified, i.e. an appropriate speed not only leads to the small deformation and better fluidity of the chips and thus reduces the occurrence of chip crushing action, but also effectively control the oxidation progress of coat material. Based on the experiment results, a suitable cutting speed range due to the tested hobbing conditions is confirmed.
