Optimization Of A Hard Turning Process Using Wiper Geometry Tool By Normal Boundary Intersection

Conventional factors influence analysis, in a machining process, is usually done studying the effect of each one separately. In this context, arises the Normal Boundary Intersection (NBI), which is a statistical technique that allows the simultaneous analysis of several influence factors in a process. This statistical approach consists of planning experiments, which are able to generate appropriate data for effective analysis, resulting in valid and objective conclusions. This paper specifically addresses the modeling of the surface roughness parameters (Ra) and the tool life (T) in the AISI H13 (54 HRC) hardened steel turning process, by using a ceramic tool coated with titanium nitride. The models were obtained by the Design of Experiments methodology, using the following parameters: cutting speed, feed rate and depth of cut, as the influence variables. Thus, a brief analysis of the process quality and productivity were done by NBI method.