正面フライス加工層の高圧縮残留応力に関する研究

抄録

Machining conditions giving high residual compressive stress in carbon steel were examined experimentaly in this study. The relation between dimensions/configurations of cutting edge and resisual stress was analyzed mainly. The influence of corner radius of the top of cutting edge, miner cutting edge clearance angle and feed per tooth were checked.
The residual stress was measurted by using X-ray. The diffraction profiles were approximated to Gausian curves, and the peek positions were decided by using a method of nonlinear least squares. The followings became obvious as the results of analyses.
When the feed per tooth was made smaller with an appropriate corner radius and small cutting edge clearance angle, high compressive residual stress occurred in the right angle direction of machining. The penetration depth of residual stress became deep when high compressive residual stress occurred.