On a Method of Prevent Chatter in Boring Operations : (Manufacture and Test of New Anti-Chatter Boring Bar)

Abstract

Various kinds of boring bars to prevent chatter in boring operations have been developed, but they are not successful enough. This paper deals with a new boring bar which is composed of a body on which a tool is mounted and an internal plate fitted in a slit of the body. Its structure and dimensions are determined, based on the theoretical analysis in order to achieve the highest performance, and the stability limits of the new boring bar are compared experimentally with those of the conventional bar with the circular solid section of the same diameter and length to diameter ratio. The experimental results show that the new bar can perform stable boring operations in a wide range of cutting speeds.