Design Optimisation Of The Head Of A Highprecision
Optical Polishing Machine
Author(s)
S.M. Barrans, E.M. Ghurbal & R. Freeman
Abstract
A highly deformable polishng tool has been specified for a revolutionary
aspheric polishing system. This rubber tool is required to retain a spherical outer
surface with minimal change in shape when subjected to internal pressure. It is
proposed here that using a variable wall thickness around the tool will reduce
deviations from the spherical shape. This paper describes a theoretical study
carried out using finite element analysis to determine the optimum wall
thickness variation. The component performance was judged against the three
criteria of change in radius, center of curvature drift and loss of sphericity. A
multi-criteria optimization code llnked to a parametric finite element model was
used to analyze the problem and generate a set of Pareto optimal solutions.
Keywords
Related Book
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