SURFACE QUALITY RELATED TO TURNING TOOLS

Document Type : Original Article

Author

Assist. Prof., Production Eng. Dept., Faculty of Eng. and Technology, Helwan, Helwan University, Cairo, Egypt.

Abstract

Surface quality is one of the important criteria to be considered for proper functioning of many machine parts. The study of the surface quality produced during the machining process with the different operation conditions will lead to better and satisfactory control over the degree of finish. In the present work, an experimental study of the relation between the surface quality and the cutting conditions, tool geometry and tool material is presented. Brass was used as a work material. The combined effects of the cutting conditions on the surface quality of the machining surfaces were discussed. It was found that the feed rate and nose radius have major effect on the surface quality. A relationship between nose radius and feed rate indicated that the nose radius should be three times or more of the feed rate. However, it should be remembered that if the nose radius is too large, it may cause chatter.