Title: Formation of a significantly less stiff air-layer around a grinding wheel pasted with rexine leather

Authors: B. Mandal, S. Majumdar, S. Das, S. Banerjee

Addresses: Department of Mechanical Engineering, Jadavpur University, Kolkata – 700032, India. ' Department of Mechanical Engineering, Guru Nanak Institute of Technology, Panihati – 743176, West Bengal, India. ' Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani – 741235, India. ' Department of Mechanical Engineering, Jadavpur University, Kolkata – 700032, India

Abstract: Precision grinding is associated with high grinding zone temperatures, which may lead to thermal damage, if not controlled properly. Only a small amount of grinding fluid can effectively enter the grinding zone to control the temperature. The stiff air layer formed around the wheel contributes to a great extent to restrict the entry of grinding fluid into the grinding zone. The aim of the present investigation is to find out the pressure of this air layer at various grinding speeds and conditions of the wheel. The pressure of this air layer attains its maximum close to the wheel surface causing the impediment to the fluid to reach deep inside the grinding zone. On the other hand, use of rexine pasted wheel results in reduction in this air pressure effectively, thereby raising the possibility of augmenting the grinding performance.

Keywords: grinding wheels; stiff air layer; rexine pasted wheels; pitot tubes; grinding fluids; precision grinding; air pressure.

DOI: 10.1504/IJPTECH.2011.038106

International Journal of Precision Technology, 2011 Vol.2 No.1, pp.12 - 20

Published online: 18 Jan 2011 *

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