Implementation of unidirectional functional dimensioning and tolerancing algorithm in CAD systems

Abstract

Functional dimensioning has a clear mission: to choose the correct dimension and tolerance in order to optimise the parts in the definition of the mechanical assembly for their functional purpose. The current development of computer systems allows us to introduce intelligent help in CAD systems, which makes the complex task of functional dimensioning a lot easier. The international technical literature offers a number of investigation projects that contribute to establishing the bases for implementing intelligent help for functional dimensioning in the design phase. The main aim of this study is to define a system of computer‐aided dimensioning, using graphic design (CAD) systems and the necessary programming language.