Improvement of Surface Quality using Magneto-Rheological Fluid (MRF) Boring Bar

摘要

Boring bars with a large length-to-diameter ratio chatter under productive cutting conditions, which lead to poor surface finish and violation of part tolerances. Chatter suppression in machining permits higher productivity and better surface finishes. The MR fluid, which changes stiffness and undergoes a phase transformation when subjected to an external magnetic field, is applied to adjust the stiffness of the boring bar and suppress chatter. The stiffness and energy dissipation properties of the MR fluid boring bar can be adjusted by varying the strength of the applied magnetic field. This research work is intended to improve the surface quality of various materials at two different speeds with magneto-rheological fluid (MRF) boring bar during boring process.