Journal of Applied Mechanical Engineering

Micro-topography generation method using a rotating tool actuated by an electromagnetic actuator

4^th International Conference and Exhibition on Mechanical & Aerospace Engineering

October 03-04, 2016 Orlando, USA

Sun-Kyu Lee

Gwangju Institute of Science and Technology, Korea

Scientific Tracks Abstracts: J Appl Mech Eng

Abstract:

This paper presents a micro-patterning or surface texturing technique on the fixed work surface using a proposed new spindle system with a rotating cutting tool controlled by the electromagnetic actuator in real time. The proposed spindle system creates micro-sized patterns using rotating tools such as a micro-milling tool and a micro-grinding wheel. The shaft of the spindle is suspended by air bearings, and an electromagnetic actuator controls the radial motion of the spindle housing instead of the shaft. A PID controller is adopted to make the system stable, and adaptive feedforward cancellation is used to effectively compensate for the run-out of the spindle system during machining. The micro pattern array and the digital images are generated on the electro-less Ni coated workpiece using a single-flute diamond square end mill. The machining results show that the run-out compensation improves the machining accuracy. It is expected that micro-patterning using the proposed spindle system can be applied over a large surface area which is fixed at the work table.

Biography :

Sun-Kyu Lee has completed his PhD since 1991 from Tokyo Institute of Technology. He had worked in the R&D of Toyoda and Samsung, Now he is the professor of the Gwangju Institute of Science and Technology, and also board member of the Korea Society for Precision Engineering. He has published more than 20 papers in international journals and has been serving as an editor of International Journal of Precision Engineering and Manufacture since 2011.

Email: skyee@gist.ac.kr