Journal ArticleDOI
Temperatures in Orthogonal Metal Cutting
G. Boothroyd
- Vol. 177, Iss: 1, pp 789-810
TLDR
In this paper, the authors used a photographic technique for the determination of the complete temperature distribution in the orthogonal metal cutting process; they are found to disagree with previous theoretical predictions.Abstract:
The results of a photographic technique for the determination of the complete temperature distribution in the orthogonal metal cutting process are presented; they are found to disagree with previous theoretical predictions. The temperatures along the tool rake face are of particular interest because they are thought to affect the wear of the cutting tool and friction between the chip and tool; it is found that these temperatures have been considerably over-estimated by previous work. By introducing the width of the secondary deformation zone, i.e. the extent of sub-surface deformation due to friction at the tool-chip interface, as a new variable, it is found that more consistent predictions of rake face temperatures can be made. From this work information has been obtained on the shape of the zones of plastic deformation in metal cutting and on the distribution of heat generation within these zones.read more
Citations
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Journal ArticleDOI
Finite-difference solution to the problem of temperature distribution under a moving heat source, using the concept of a quasi-stationary state
S.M. De Almeida,B. K. Hinds +1 more
TL;DR: In this article, a finite-difference model is used to predict the temperature distribution in a solid under a moving heat source, and a coordinate system centered on the heat source is adopted so that the temperature field relative to the source is taken to be fully developed and static.
Dissertation
A Heat Partition investigation of Multilayer Coated Carbide Tools for High Speed Machining through experimental studies and Finite Element Modelling
TL;DR: In this article, the authors used a combined finite element (FE) and experimental approach to quantify the contribution of heat from the primary and secondary deformation zones using a combination of finite element modelling, analytical modelling and experimental data.
Dissertation
Experimental determination of strain rate and flow stress in the primary shear zone while machining AISI 4340 and Ti-6AL-4V
TL;DR: In this article, an experimental study of the cutting forces, chip thickness, and velocity fields in the primary shear zone (PSZ) has been carried out during the cutting of AISI 4340 steel in three different tempers.
Journal Article
Modelling Requirements for Computer Simulation of Metal Machining
TL;DR: In this paper, the authors present some solutions towards modelling these aspects of machining, such as mesh and boundary conditions, flow stress of the workpiece material and the frictional properties at the interface between the chip and the cutting tool.
Dissertation
Modélisation hybride du frottement local à l'interface outil-copeau en usinage des alliages métalliques
TL;DR: In this article, an approche hybride (analytique-numerique) is proposed to solve le problem thermique non lineaire dans le copeau a l'aide de la methode des elements finis.
References
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Journal ArticleDOI
Mechanics of Orthogonal Machining
W. B. Palmer,P. L. B. Oxley +1 more
TL;DR: In this paper, an experimental technique was developed for observing the cutting process during slow orthogonal cutting of mild steel, and the theory was extended by including the effect of work-hardening and it appeared that consistency had been regained.
Journal ArticleDOI
Photographic technique for the determination of metal cutting temperatures
TL;DR: In this paper, an experimental technique has been developed for the measurement of the temperature distribution in the deformation zone and in the chip and tool during orthogonal cutting, where the cutting edge of the tool is perpendicular to the direction of relative motion of the workpiece and tool.
Journal ArticleDOI
A theoretical investigation of the temperature distribution in the metal cutting process
TL;DR: In this article, relaxation and analytical methods of solution have been developed and applied to the work material, the chip and the tool considered as three separate problems and compared with other analytical solutions and with indirect experimental evidence of the temperatures attained.
Journal ArticleDOI
Shear angle solutions in orthogonal machining
TL;DR: In this article, it is shown that the effective shear angle will be smaller at slow speeds, for given values of tool rake angle and tool-chip interface friction, than at high speed sowing to the increase in width of the deforming zone with decrease in cutting speed.
Journal ArticleDOI
The Influence of Rate of Strain-Hardening in Machining:
TL;DR: In order to determine the influence of the rate of strain-hardening (that is, rate of increase of flow stress with straining) on the machining process, cutting tests were carried out on a material as mentioned in this paper.