Geometric Modeling and Computer Drafting Methods for Sheet Metal Parts

Abstract

The CAD/CAM system for sheet metal structural parts which was successfully developed, is now being extended into practical use. The parts are mainly used in electronic equipment such as mounting hardware for variety of devices and components. Essentially, it assumes a multi-kind and small quantity production. Design and manufacturing of the individual parts are not necessarily expensive nor too much brain work is required, whereas many skilled hands are needed. The total production of sheet metal parts is the biggest in the factory. Nevertheless, graphic figure of the sheet metal parts are different to that of other machined parts. To establish effective CAD system for the sheet metal structural parts, a new geometric modeling and computer graphic processing methods are used, and their description is given in this paper. It also provides a classification of the different sheet metal structural parts figures.