Background and Motivation

Machining processes are indispensable for todays manufacturing industries. Although significant effort has been spend to understand fundamental mechanisms of conventional metal cutting processes such as milling, turning, grinding and drilling. These processes are still being operated at conditions far from optimal.

The objective of this research is to gain deeper understanding on the mechanics and dynamics of machining processes, model and optimize them to achieve higher material removal rates.

 

Chatter Stability during machining is crucial in achieving higher material removal rates in milling and turning processes. Our research group is investigating on the directional effects on chatter stability and how they can be utilized to maximize the material removal rates (MRR) through effective path planning.

Another research objective is to improve the efficiency and performance of current machining processes with external assistance. We have proposed a new process, called the "chip pulling turning". In this process, the cut chip is pulled with a help of an assistive device. As a result, the friction force between the chip and the cutting tool is canceled. By eliminating the adverse effect of friction, this enables conventional turning processes to achieve significantly high efficiency. Cutting forces and cutting energy is reduced leading to greater tool life and higher machining performance.

 

Published Work