Cutting Edge Geometry Effect on Plastic Deformation of Titanium Alloy

G I Korovin,A V Filippov,A V Proskokov,V V Gorbatenko

doi:10.1088/1757-899x/125/1/012012

Abstract

The paper presents experimental studies of OT4 titanium alloy machining with cutting edges of various geometry parameters. Experiments were performed at a low speed by the scheme of free cutting. Intensity of plastic shear strain was set for defining of cutting edge geometry effect on machining. Images of chip formed are shown. Estimation of strain magnitude was accomplished with digital image correlation method. Effect of rake angle and cutting edge angle has been studied. Depth of deformed layer and the area of the plastic strain is determine. Results showed that increasing the angle of the cutting edge inclination results in a change the mechanism of chip formation.

Highlights

Cutting operation for many years is one of the most effective ways of metal shaping
We investigated the peculiarities of plastic deformation in polycrystalline copper cutting using tools with different rake angles and cutting edge inclination angles
The result revealed that the increase of the rake angle and the cutting edge inclination angle reduces the intensity of the plastic shear strain and sizes of plastic deformation area in chip formation zone [12]

Summary

Introduction

Cutting operation for many years is one of the most effective ways of metal shaping. Complexity of the processes, occurring in the cutting zone, makes it difficult to study inter-coupling of various physical characteristics of cutting operations. The most common ways to examine cutting strains are microsections and use of a grade grid. These methods require fragments of the cutting zone with intact chips, which can be achieved by use special tools for momentary pause of the operation. It is known that different materials and cutting conditions are characterized by different chip formation mechanism The copper chip forming is realized by continuous mechanism in a wide range of cutting conditions and the cutting edge geometry. The copper chip forming is realized by continuous mechanism in a wide range of cutting conditions and the cutting edge geometry.The element discontinuous and continuous chips can be made under machining titanium alloys.

Published under licence by IOP Publishing Ltd

Results and discussions

Conclusion