Effects of Grain Size and Concentration of Grinding Wheel in Ultrasonically Assisted Grinding |
| Journal |
Key Engineering Materials (Volumes 389 - 390) |
| Volume |
Advances in Abrasive Technology XI |
| Edited by |
Tsunemoto Kuriyagawa, Libo Zhou, Jiwang Yan and Nobuhito Yoshihara |
| Pages |
283-288 |
| DOI |
10.4028/www.scientific.net/KEM.389-390.283 |
| Online since |
September, 2008 |
| Authors |
Mitsuyoshi Nomura, Yong Bo Wu, Tsunemoto Kuriyagawa, Takahiro Kawashima, Takayuki Shibata |
| Keywords |
Grinding Force, Internal Grinding, Surface Roughness, Ultrasonic Vibration |
| Abstract |
This study aims to develop an ultrasonically assisted grinding technology for precision
internal grinding of a small hole measuring several millimeters in diameter, such as those formed in a
fuel injector for an automotive engine. In a previous work, an experimental apparatus mainly
composed of an ultrasonic vibration spindle was designed and constructed, and grinding experiments
were carried out. The purpose of this paper is to examine the effect of ultrasonic vibration on grinding
force and surface roughness when the grain size and concentration of small cBN grinding wheel are
changed. The experimental results indicate that applying ultrasonic vibration to the wheel decreases
the normal and tangential grinding forces by more than 50% and 78%, respectively, and improves the
surface roughness by as much as 10% when the wheel grain size and concentration are changed. In
addition, over the range of grinding conditions employed in this paper, the grain size as small as 5μm
can be used in ultrasonically assisted grinding. |
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