The effect of cutting tool vibration on surface roughness of work piece in dry turning operation

Abstract EN

This study is to find a correlation between surface roughness and cutting tool vibration in turning.

The ranges of process cutting parameters in the present study are limited : cutting speed (34, 70, 130 m / min), depth of cut (0.1, 0.2mm), feed rate (0.07, 0.13, 0.17mm / rev) and tool overhanging (25, 30, 35, 40mm).

The data are generated by lathe dry turning of medium carbon steel samples at different levels of the mentioned above parameters.

Dry cutting tests (without using cutting fluid) are conducted to simulate a good turning, the dry turning provided a clean environment to obtain undisturbed clear cutting vibration, which results in more accurate and clear correlation between cutting vibrations and roughness.

The analysis of variance reveal in this study is that the best surface roughness condition is achieved at a low (feed rate less and equal 0.13mm / rev), and with smaller tool overhang less and equal 30mm).

The results also show that the cutting speed has small effect on surface roughness than feed rate and tool overhang.

The depth of cut has not a significant effect on surface roughness in this study.

Above results can be obtained when there is no built up edge and no damage of the tool tip.

Finally experimental results have shown good correlation between the cutting tool vibration and surface roughness which can be used to control the finish surface of the workpieces during the mass production.