ターニングセンタにおける薄肉円筒形状を対象とした機上レーザ焼入れ法の検討

抄録

It is demanded that the next-generation turning centers achieve process integration of cutting of complex-shaped workpieces, mainly cylindrical ones; heat treatment; and finishing. Laser hardening especially gains attention as a process integration technology for in-situ heat treatment. On the other hand, as the heat capacity of thin-wall cylindrical workpiece is small in the off-plane direction, highly sophisticated techniques are required to develop a laser hardening method with the self-cooling function. In this study, we developed a method for finding appropriate laser irradiation conditions by carrying out both FEM simulation and experiments using line-focused laser beam, and investigated its application to harden gear tooth surface.