5. MINIMIZATION OF BORING TOOL VIBRATION USING COMPOSITE MATERIAL

Boring is a commonly used operation to enlarge the existing holes of machine structures. When boring tool is slender and long, it is subjected to excessive static deflections or self-excited chatter vibrations which are detrimental to the accuracy and surface finish of the hole. It also causes accelerated wear and chipping of the tool. Internal turning frequently requires a long and slender boring tool in order to machine inside a cavity, and vibrations generally become highly correlated with one of the fundamental bending modes of the boring tool. There are several ways to eliminate vibrations, but most effective and reliable ones required the thorough understanding of dynamic characteristics of the tooling system . Furthermore, the interface between the boring tool and the clamping house has a significant influence on the dynamic properties of the clamped boring tool. This report focuses on the behavior of a boring tool that arises under different overhang lengths which are commonly used in the manufacturing industry.