Recent advances in plasticity applications in metal machining: slip-line models for machining with rounded cutting edge restricted contact grooved tools. (22nd October 2007)

• Record Type: Journal Article
• Authors: Wang, Xiqun; Jawahir, I.S.
• Is Part Of: International journal of machining and machinability of materials. Volume 2:Number 3/4(2007)
• Page Start: 347
• Page End: 360
• Publication Date: 2007-10-22
• Subjects: machining -- plasticity -- slip-line models -- restricted contact -- rounded cutting edges -- restricted contact tools -- grooved tools -- strain rate -- temperature effects -- tool wear -- tool design -- cutting forces -- chip thickness -- chip up-curl radius -- temperature -- flow stresses -- primary shear zone -- tool-chip interface -- orthogonal machining; Machining -- Periodicals; Metals -- Machinability -- Periodicals; 671.35
• Languages: English
• ISSNs: 1748-5711

Abstract

This paper presents a summary of new findings on plasticity applications in metal machining, primarily covering the recent efforts on developing new slip-line models for machining with restricted contact grooved tools which involve a finite cutting edge radius. Extended application of the initially developed plane-strain, rigid-plastic slip-line fields to take account of strain, strain-rate and temperature effects is shown to provide non-unique solutions for machining with grooved tools which most commonly incorporate geometric features such as a restricted contact and a rounded cutting edge. Predictions of cutting forces, chip thickness, chip up-curl radius, temperatures and flow stresses at the primary shear zone and at the tool-chip interface, etc. are made for a range of input conditions in orthogonal machining. The practical impact of these new findings on tool-wear and cutting tool design are emphasised in this paper.