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authors Hinds, John K. and Kuan, L.P.
year 1979
title Sculptured Surface Technology as a Unified Approach to Geometric Definition
source CASA - The Computer and Automated System Association of SME. 23 p. : ill Dearborn: SME, 1979. MS79-146. includes bibliography.
summary The purpose of this paper is to describe a comprehensive approach to representing and machining complex surface shapes in an APT programming system. The APT (Automatically Programmed Tools) user language was extended to permit the definition of a hierarchy of curves and surfaces. Much of the logic has been implemented using matrix canonical forms which are closed under the full family of projective transformations, permitting family of parts storage and retrieval and part compensation. The area of numerical control machining was addressed, but the solutions for tool positioning were only partially successful due to the complexity of the algorithmic problem. This paper first outlines some of the mathematical methods adopted and then illustrates how these have been implemented with an APT part programming example
keywords curved surfaces, representation, geometric modeling, mechanical engineering, CAM
series CADline
references Content-type: text/plain
last changed 2003/06/02 11:58
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