Study of Ultrasonic Vibration Assisted Grinding of Fused Silica Ceramic

Please enable javascript in your browser.

Mojtahedzade Faraby, Amir Hossein | 2016

472 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 48308 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Movahhedy, Mohammad Reza; Akbari, Javad
Abstract:
Fused silica is an important industrial ceramics with low machinability due to high brittleness, low hardness and high chemical reactivity. Traditional machining of this ceramic is very inefficient. Ultrasonic vibrations assisted grinding of this ceramic could create pieces with high accuracy and good surface quality. The main objective of this thesis is to investigative Ultrasonic vibrations assisted grinding of fused silica. Ultrasonic vibrations with a frequency of 20 kHz and amplitude in the range of 10-40 micron is applied to workpiece during grinding process. It is shown that in the ultrasonic assisted grinding, machining forces decreases by up to 45% and surface roughness reduces by up to 23% and surface quality improves compared to traditional grinding. Also, it is observed that the use of lubricants, in the flood or MQL modes, during ultrasonic assisted grinding will reduce machining forces and surface roughness by up to 65% and 43% respectively
Keywords:
Grinding ; Ultrasonic Assisted Grinding ; Ultrasonic-Vibration ; Two Dimensional Vibration ; Fused Cilica Ceramic

No TOC