Damaging influence of cutting tools on the manufactured surfaces quality

Abstract

Since their apparition, machining techniques underwent multiple improvements. The put on shape material processes by abduction of material are constantly revised on order to satisfy the economic or ecological industrial requirements. Nowadays, the manufacture engineer must be able to answer multitude questions in order to achieve pieces quickly wile satisfying the required quality with least cost. The cutting tools have generally a complex geometry which results often from compulsory and purely empirical focusing within the workshop, sometimes from more analytical studies observing diverse criteria (damage resistance or generated surface quality), but rarely from a real optimization which would require a modelling of the drainage of one or several shavings. In the field of the metals cutting, the wear of the cutting tools leads to a degradation of the cutting zone and work. It is thus important to study the evolution of the cutting criteria allowing to follow the tool degradation during a manufacturing operations and thus to decide whether to replace he tool or not. An experimental device, particularly, a high resolution sensor, had been used and gave the real wear shape of the cutting face. In order to deduce this shape by using the B-Spline method, a mathematical model has been proposed. © Springer Science + Business Media B.V. 2009.