Hard cutting is a technology that takes cutting hardened steels as a method of semi-finish machining or finish machining. The traditional manufacture order such as cutting-harden-grinding may be changed by using this technology, and the weariness strength and productivity of workpiece is improved, and the consumed power is reduced. The hard-dry cutting is also a technology that is propitious to protect environment and carry out green manufacture. Finite element method is one of the powerful numerical analys...