Effect of rake angle on strain field during orthogonal cutting of hardened steel with c-BN tools
Affiliation auteurs | !!!! Error affiliation !!!! |
Titre | Effect of rake angle on strain field during orthogonal cutting of hardened steel with c-BN tools |
Type de publication | Conference Paper |
Year of Publication | 2015 |
Auteurs | Baizeau T, Campocasso S, Fromentin G, Rossi F, Poulachon G |
Editor | Schulze V |
Conference Name | 15TH CIRP CONFERENCE ON MODELLING OF MACHINING OPERATIONS (15TH CMMO) |
Publisher | CIRP |
Conference Location | SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
Mots-clés | c-BN tools, digital image correlation, High speed imaging, orthogonal cutting, Strain field |
Résumé | In the case of hard machining of steels, negative rake tools generate compressive deformation and high temperature under the cutting edge, leading to phase transformation or ``white layers''. The resulting surface integrity can be predicted by numerical simulations which may be validated by comparing simulated and measured strain fields. Recent high speed imaging devices have facilitated strain field measurement by Digital Image Correlation (DIC), even at high strain rates. However, the analyse is generally restricted to the primary shear zone and not to the workpiece under the machined surface. For this study, a double-frame camera and a pulsed Nd:YAG laser, generally used in the field of fluid mechanics, have been employed to record images during an orthogonal cutting operation of a hardened steel. The effect of the rake angle and the edge preparation of c-BN tools on the subsurface displacement field, which has been experimentally investigated by using DIC, are presented in this paper together with an analysis on the origins of the strains. The results of these measurements will be used to validate cutting numerical simulations or to improve hybrid modelling of surface integrity. (C) 2015 The Authors. Published by Elsevier B. V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
DOI | 10.1016/j.procir.2015.03.089 |