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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.

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Citations
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Dissertation

Analytical modeling and simulation of metal cutting forces for engineering alloys

Lei Pang
Abstract: In the current research, an analytical chip formation model and the methodology to determine material flow data have been developed. The efforts have been made to address work hardening and thermal softening effects and allow the material to flow continuously through an opened-up deformation zone. Oxley's analysis of machining is extended to the application of various engineering materials. The basic model is extended to the simulation of end milling process and validated by comparing the predictions with experimental data for AISI1045 steel and three other materials (AL-6061, AL7075 and Ti6Al-4V) from open literatures.

Design and fabrication of a new class of cutting tool material using additive manufacturing

Jenna Baldock
TL;DR: In this article, there is a growing recognition that Australian manufacturers need to work smarter and be more innovative in areas such as information technology, which will help them to adapt to globalisation and changing customer needs.
Journal ArticleDOI

An investigation of the specific cutting force and its direction factors in turning

TL;DR: In this article, a predictive machining theory based on a shear zone model of chip formation is used to predict the specific cutting force and its directional factors under the variation of cutting conditions.
Journal ArticleDOI

Thermal-based tool sensor for ball burnishing

TL;DR: In this article, the design of a thermal-based tool sensor for ball burnishing operations based on the embedded thermocouple concept is described, and preliminary test runs in a laboratory setup to burnish flat surfaces showed that the sensor was able to detect a trend in the rise temtemperature of the ball.
Journal ArticleDOI

Model-based monitoring of temperatures and heat flows in the milling cutter

TL;DR: In this article, the authors measured the cutting power in the milling process by means of a dynamometer as well as the temperature in the tool by an embedded thermocouple and the results showed a decreasing heat partition into the tool with increasing cutting velocity.
References
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Journal ArticleDOI

Mechanics of Orthogonal Machining

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.