Turning of hardened steel interrupted surface using PCBN and ceramic tools

Abstract

The flexibility and capability of machining complex geometries in only one setup are the main advantages of using hard turning instead of grinding process. Economically, the cost of turning process is generally lower than the cost of grinding process. Moreover, hardened steel turning is carried out dry, which eliminates probable employees’ health problems and the necessity of cutting fluid disposal. The major works involving hard turning process are done by cutting continuous surfaces, but most of these works involve some kind of interruption. This can decrease the tool life. The objective of this work is to investigate certain conditions on hard turning of interrupted surfaces, in which PCBN (polycrystalline Boron Nitrite) and ceramic tools are used. It will be used PCBN and ceramic tools based on aluminum oxide reinforced with whiskers (SiC), in two different cutting types (continuous and interrupted) of hardened steel at 56HRC. (AU)