Abstract
Vibration-assisted grinding, in which harder abrasives than materials to be machined are employed, has been a viable and effective approach to increasing material removal rate (MRR) and/or reducing surface roughness of ground surfaces. We transfer this ideology to fused silica polishing by incorporating ultrasonic vibration into recently developed fixed-abrasive pellets in an attempt to enhance MRR and/or to improve manufactured surface quality. A prototype ultrasonic vibrator, the heart of the polishing head, was designed and the related experimental work was performed on an in-house built setup in conjunction with the constructed head. The vibrator is devised for the generation of 2-D tool path despite using only one actuator in lieu of two actuators in conventional 2-D ultrasonic machining systems. We then combined the ultrasonic vibration with fixed abrasive polishing pellets to machine fused silica glass. Machining experiments reveal that MRR is considerably increased up to >50% upon the introduction of ultrasonic vibration (UV) whilst surface roughness is not degraded appreciably. It was also noted that a overwhelmingly greater deal of polishing debris was dispelled during ultrasonic vibration assisted polishing than conventional bound-abrasive polishing, which may account for the greater MRR in UV assisted polishing.
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An erratum to this article is available at http://dx.doi.org/10.1007/s12541-014-0423-9.
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Li, Y., Wu, Y., Zhou, L. et al. Chemo-mechanical manufacturing of fused silica by combining ultrasonic vibration with fixed-abrasive pellets. Int. J. Precis. Eng. Manuf. 13, 2163–2172 (2012). https://doi.org/10.1007/s12541-012-0287-9
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DOI: https://doi.org/10.1007/s12541-012-0287-9