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Proceedings Paper

The Specification And Control Of Surface Finish-Empiricism Versus Dogmatism
Author(s): K. J. Stout; C. Obray; J. Jungles
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Paper Abstract

This paper reviews the development of the analysis of surface finish from the early attempts in the nineteen thirties to the present day. The development of parameters is put in context with the techniques available and it is demonstrated that characterization based on graphical and experimental convenience has influenced industrial practice. As the requirements of manufacture and functional performance have been stretched by advancing technology many industrialists have been forced to accept that existing practices are limited, and have sought other descriptions still based on well established techniques; but these existing techniques are limited, their suitability to inprocess measurement practically non existent. It is shown that recently attempts have been made to develop optical methods of assessing surface finish using traditional parameters such as Ra. This paper suggests that it may be time to look towards a new form of specification, more suited to assessment by optical transducers, and some methods of assessment are proposed. To support this view a simple low cost device is discussed which can be calibrated to give Ra but which also presents information in a more relevant empirical way which may be more valid than the existing parameter specification.

Paper Details

Date Published: 3 September 1985
PDF: 7 pages
Proc. SPIE 0525, Measurement and Effects of Surface Defects & Quality of Polish, (3 September 1985); doi: 10.1117/12.946341
Show Author Affiliations
K. J. Stout, Coventry (Lanchester) Polytechnic (England)
C. Obray, Coventry (Lanchester) Polytechnic (England)
J. Jungles, JAR MicroEngineerinq Ltd. (England)

Published in SPIE Proceedings Vol. 0525:
Measurement and Effects of Surface Defects & Quality of Polish
Lionel R. Baker; Harold E. Bennett, Editor(s)

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