Enhancement of Surface Finish of Boring Operation Using Passive Damper

Boring is nothing but internal turning operation. As like external turning, the boring operation is also widely required in manufacturing. The problem persists with boring operation when axial distance of the internal dimension increases. To perform large hole machining operations the overhang length of the boring bar also increases. As the overhang length of the boring bar increases the amount of deflection of the boring bar also increases, which results into unwanted vibrations. These unwanted vibrations will create chatter marks on the machined surfaces and which affect the surface finish.In this book work an attempt is made to find out the solution for the vibration problem of the boring operation by using passive vibration damper technique. By mounting this passive damper on the standard boring bar available in the market and using the standard practice of boring operation i.e. applying routine machining parameters an experiments were conducted on reliable CNC turning centermachine. The results obtained were found satisfactory and indicates that passive damper can be used for minimizing the effects of vibrations which ultimately results into enhancement of surface finish.