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Corresponding Author

El-Axir, M.

Subject Area

Production Engineering and Mechanical Design

Article Type

Original Study

Abstract

Lathe is one of machine tools used to produce round mechanical parts. Most of these parts must be finished with high accuracy which can not be obtained with conducting turning process only. Therefore, the objective of this work is how the center rest can be used to finish the round machined parts in suite on the center lathe. To achieve the object, three ball burnishing tool are designed and constructed as long as replacing the three original adjustable jaws of the moving rest. Experimental work was carried out on a lathe to study the effect of this new burnishing tool and the lathe parameters, such as, burnishing speed, burnishing force, and burnishing feed on some surface characteristics which are; surface roughness, surface roundness and reduction of diameter. The results showed that good surface characteristics can be obtained by using this new burnishing tool with minimum cost as a result of transfer the center rest from only support element to super finish tool (burnishing tool). Burnishing force and burnishing feed are the most important parameters that play an important role in controlling the values of all surface characteristics investigated in this work.

Keywords

Burnishing; center rest; Surface roughness; surface roundness; change in diameter

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