THE EVALUATION OF COMPUTER GENERATED PROCESS PLANS ON THE BASIS OF MACHINING ACCURACY

Abstract

In this report the published literature on computer aided process planning and information concept theory has been reviewed. The major thrust of the work presented here is the evaluation of computer generated process plans on the basis of machining accuracy. An algorithm based on information concept has been developed. In an earlier work [12] a generative process planning system was developed to prepare process plans for turned components. Depending upon the surface relationship matrix it generates the possible process sequences. The generated possible sequences are taken as the input for the present work. These process plans are evaluated on be of machining accuracy. The algorithm used for this purpose is based on the minimum information concept . The information content is calculated from a comparison of available tolerance, manufacturing tolerance and capability of manufacturing system. A program written in FORTRAN-IV can accommodate any number of operations in a sequence subject to a maximum of nine features. It has two formats, one for seven features and the other for nine