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Flexible Automation and Intelligent Manufacturing,  1997:<br>Proceedings of the Seventh International FAIM Conference

ISBN:
978-1-56700-089-4 (Print)
978-1-56700-442-7 (Online)

A TWO-HOLE CLAMPING STRATEGY WITH GEOMETRIC TOLERANCING FOR SETUP PLANNING

Jueng-Shing Hwang
Industrial and Management System Engineering University of South Florida Tampa, FL 33620

William A. Miller
Industrial and Management System Engineering University of South Florida Tampa, FL 33620

Abstract

This paper describes a method for integrating a clamping strategy with geometric tolerancing information to automate setup planning for machining prismatic parts. This procedure, referred to as a two-hole clamping strategy, uses text and graphical forms to provide individual feature and feature-related descriptions on engineering drawings. To provide more alternatives for setup planning, the two-hole clamping strategy is used instead of the traditional vice clamping strategy. Each strategy can assign a variety of priorities for the feature interactions. According to patterns on the part designs, a grid-based algorithm can be applied to find a set of pilot holes for feasible machining sequences. The clamping strategy is addressed in three ways: tolerance effect, sequence of reference surfaces and sequence of features.