Authors: Zhongde Shi; John S. Agapiou; Helmi Attia
Addresses: Aerospace Manufacturing of National Research Council Canada, 5145 Avenue Decelles, Montreal, Quebec, H3T 2B2, Canada ' Manufacturing Systems Research Lab, General Motors R&D, 30500 Mound Road, Warren, MI 48090-9055, USA ' Aerospace Manufacturing of National Research Council Canada, 5145 Avenue Decelles, Montreal, Quebec, H3T 2B2, Canada
Abstract: This paper is concerned with the assessment of an experimental setup for grinding experiments with a top wheel speed of 250 m/s. Among other considerations, high speed grinding is widely considered as a way for enhancing material removal rates by utilising large depths of cut and/or high workspeeds. Performing high speed grinding operations, however, presents challenges to the setup due to the high wheel speeds involved. An experimental setup was established in this study for high speed grinding of hardened nodular cast iron and steel using vitrified CBN wheels. This setup was assessed prior to grinding for wheel balancing and guarding, wheel core expansion and temperature rise, grinding fluid delivery, and idle power consumptions. It was found that high speed wheel rotations caused wheel expansion and temperature rise. A significant portion of the total power was consumed on actions other than material removals. The preliminary grinding tests indicated that the setup met the requirements for high speed grinding in general.
Keywords: high speed grinding; HSG; vitrified CBN wheels; wheel run-out; wheel balancing; wheel guard; grinding power; wheel expansion; grinding wheels; hardened nodular cast iron; steel; temperature rise; grinding fluid delivery; idle power consumption.
International Journal of Abrasive Technology, 2013 Vol.6 No.2, pp.132 - 146
Received: 01 Mar 2013
Accepted: 05 Jul 2013
Published online: 05 Jul 2014 *