Title: Influence of cutting tool constitutive parameters on residual stresses induced by hard turning
Authors: Joel Rech, Christophe Claudin
Addresses: LTDS, Ecole Nationale d'Ingenieurs de Saint-Etienne (ENISE), 58 Rue Jean Parot, Saint-Etienne 42000, France. ' LTDS, Ecole Nationale d'Ingenieurs de Saint-Etienne (ENISE), 58 Rue Jean Parot, Saint-Etienne 42000, France
Abstract: Residual stresses and surface roughness in machined surfaces are two strategic parameters influenced by cutting tools and cutting parameters. These parameters are responsible for the fatigue resistance of highly-stressed steel components, for example, gears and bearing parts. In this paper, the effects of the cutting edge geometry (edge preparation, nose geometry) and of cutting tool materials (c-BN content, coating) on residual stresses induced by hard turning on a case-hardenened 27MnCr5 steel are investigated experimentally in order to point out the sensitivity of these parameters. X-ray diffraction measurements show the interest of cutting inserts with a wiper geometry associated with a hone edge, a TiN coating and a low c-BN content in order to optimise compressive residual stresses in the external layer of a machined surface.
Keywords: hard turning; residual stresses; composition; cutting tool geometry; surface integrity; surface roughness; fatigue resistance; highly-stressed steel; steel components; edge preparation; nose geometry.
International Journal of Machining and Machinability of Materials, 2008 Vol.4 No.1, pp.39 - 50
Published online: 24 Oct 2008 *Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article