Prediction of Cutting Forces and Built-Up Edge Formation Conditions in Machining With Oblique Nose Radius Tools

Abstract

A semi-empirical machining theory is described for predicting cutting forces and temperatures for oblique nose radius tools from cutting conditions and a knowledge of work material flow stress and thermal properties. Predictions are made for a range of cutting speeds and tool geometries. It is shown how the cutting conditions giving a built-up edge can be determined from the predicted cutting temperatures. A comparison between predicted and experimental results shows good agreement.

Keywords

cutting forces oblique machining theory built-up edge

References

Oxley

P. L. B.

The mechanics of machining: an analytical approach to assessing machinability, 1989 (Ellis Horwood, Chichester).

Merchant

M. E.

Basic mechanics of the metal cutting process. Trans. ASME, 1944, 66, 168–175.

Stabler

G. V.

The fundamental geometry of cutting tools. Proc. Instn Mech. Engrs, 1951, 165, 14–26.

Lin

G. C. I.

Mathew

Oxley

P. L. B.

Watson

A. R.

Predicting cutting forces for oblique machining conditions. Proc. Instn Mech. Engrs, 1982, 196, 141–148.

R. S.

Mathew

Oxley

P. L. B.

Young

H. T.

Allowing for end cutting edge effects in predicting forces in bar turning with oblique machining conditions. Proc. Instn Mech. Engrs, Part C, 1986, 200(C2), 89–99.

Young

H. T.

Mathew

Oxley

P. L. B.

Allowing for nose radius effects in predicting the chip flow direction and cutting forces in bar turning. Proc. Instn Mech. Engrs, Part C, 1987, 201(C3), 213–226.

Arsecularatne

J. A.

Mathew

Oxley

P. L. B.

Prediction of chip flow direction and cutting forces in oblique machining with nose radius tools. Proc. Instn Mech. Engrs, Part B, 1995, 209(B4), 305–315.

Wang

Mathew

Development of a general tool model for turning operations based on a variable flow stress theory. Int. J. Mach. Tools Mfg, 1995, 35(1), 71–90.

Mathew

A theoretical and experimental investigation of the mechanics of machining. PhD thesis, The University of New South Wales, 1983.

10.

Hastings

W. F.

Stevenson

M. G.

Oxley

P. L. B.

Predicting a material's machining characteristics using flow stress properties obtained from high-speed compression tests. Proc. Instn Mech. Engrs, 1974, 188, 245–252.