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RESEARCH PAPERS

Experiments on Adaptive Constrained Control of a CNC Lathe

[+] Author and Article Information
R. Bedini

Department of Mechanical Engineering, University of Florence, Florence, Italy

P. C. Pinotti

Department of Mechanical Engineering, University of Pisa, Pisa, Italy

J. Eng. Ind 104(2), 139-150 (May 01, 1982) (12 pages) doi:10.1115/1.3185809 History: Received March 16, 1981; Online July 30, 2009

Abstract

The technological and economic aspects of the on-line optimization of turning operations on lathes equipped with a Computerized Numerical Control (CNC) are discussed. A model of the machining process suitable for developing an Adaptive Constrained Control (ACC) is described. For optimization, a hill-climbing strategy which can be software implemented in the operating system of the CNC is used. Performance of such an ACC is also compared with the more general Adaptive Control Optimization (ACO) System. Machining tests carried out on a CNC lathe fitted with the ACC System are reported and discussed. The practical effectiveness of the ACC so developed and the reduction in machining time are demonstrated with reference to complete working cycles of typical workpieces.

Copyright © 1982 by ASME
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