Comprehension of chip formation in laser assisted machining

被引：65

作者：

Germain, G. ^{[1
]}

Dal Santo, P. ^{[1
]}

Lebrun, J. L. ^{[1
]}

机构：

[1] Arts & Metiers ParisTech, LAMPA EA1427, F-49000 Angers, France

来源：

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 2011年 / 51卷 / 03期

关键词：

LAM; Chip formation; FEM; Cutting force; Residual stresses; HEAT-TRANSFER MODEL; TRANSIENT THERMAL RESPONSE; SILICON-NITRIDE; CERAMICS;

D O I：

10.1016/j.ijmachtools.2010.11.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Laser Assisted Machining (LAM) improves the machinability of materials by locally heating the workpiece just prior to cutting. Experimental investigations have confirmed that the cutting force can be decreased, by as much as 40%, for various materials. In order to understand the effect of the laser on chip formation and on the temperature fields in the different deformation zones, thermo-mechanical simulations were undertaken. A thermo-mechanical model for chip formation was also undertaken. Experimental tests for the orthogonal cutting of 42CrMo4 steel were used to validate the simulation. The temperature fields allow us to explain the reduction in the cutting force and the resulting residual stress fields in the workpiece. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：230 / 238

页数：9

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