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RESEARCH PAPERS

An Investigation of Local Heat Transfer during Grinding Process—Effects of Porosity of Grinding Wheel

[+] Author and Article Information
Y. Saito

Department of Mechanical Engineering for Production, Tokyo Institute of Technology, Tokyo, Japan

N. Nishiwaki

Department of Industrial Mechanical Engineering, Tokyo University of Agriculture and Technology

Y. Ito

Department of Mechanical Engineering for Production, Tokyo Institute of Technology

J. Eng. Ind 101(2), 97-103 (May 01, 1979) (7 pages) doi:10.1115/1.3439502 History: Received July 25, 1978; Online July 15, 2010

Abstract

The thermal boundary condition around the workpiece surface is one of important factors to analyze the thermal deformation of a workpiece, which is in close relation to the machining, accuracy of grinding. The heat dissipation from the workpiece surface which is influenced by the flow pattern, may govern this thermal boundary condition. In consequence, it is necessary to clarify the convection heat transfer coefficient and the flow pattern of air and/or grinding fluid around surroundings of a rotating grinding wheel and of a workpiece. Here experiments were carried out in a surface grinding process to measure the flow velocity, wall pressure and local heat transfer by changing the porosity of the grinding wheel. The air blowing out from the grinding wheel which is effected by the porosity may be considered to have large influences on the local heat transfer coefficient, which is found to be neither symmetric nor uniform over the workpiece surface.

Copyright © 1979 by ASME
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