摘要：In hard turning, ferrous metal parts that are hard-ened usually between (45-70 HRC) are machined with thesingle point cutting tools. This has become possible withthe availability of the new cutting tool materials (cubicboron nitride (CBN) and ceramics). Since a large numberof operations is required to produce the finished product, ifsome of the operations can be combined, or eliminated, orcan be substituted by the new process, product cycle timecan be reduced and productivity can be improved. Thetraditional method of machining hardened materials in-cludes rough turning, heat treatment, and then grindingprocess. Hard turning eliminates the series of operationsrequired to produce a component and thereby reduces thecycle time resulting in productivity improvement [1-3].
