Title: A graphical approach to assembly tolerance stack analysis: the 'Quickie GDT' method

Authors: Bryan K.A. Ngoi, C.S. Tan, L.C. Goh

Addresses: School of Mechanical and Production Engineering, Nanyang Technological University, Nanyang Avenue, Singapore. ' School of Mechanical and Production Engineering, Nanyang Technological University, Nanyang Avenue, Singapore. ' School of Mechanical and Production Engineering, Nanyang Technological University, Nanyang Avenue, Singapore

Abstract: More industries are now aware of the importance of geometric dimensioning and tolerancing (GDT) to their product design. The conventional method of tolerance stack analysis for GDT is tedious and time consuming. This paper presents an elegant approach by using a |Quickie| technique of tolerance stack analysis for GDT. The proposed approach has the potential to reduce significantly the amount of work required, and computerisation is promising. Two examples are used to illustrate the effectiveness of the method. The |Quickie GDT| method is applicable to all geometric characteristics. However, due to the different treatment in the various families of geometric characteristics, this paper describes the |Quickie GDT| approach for analysing form and orientation tolerances. As for the other geometric tolerances, examples are also included in the appendices.

Keywords: assembly tolerance stack analysis; geometric dimensioning and tolerancing; GDT; product design; dimensional relationships; process planning; geometric tolerances.

DOI: 10.1504/IJCAT.1996.062311

International Journal of Computer Applications in Technology, 1996 Vol.9 No.4, pp.193 - 210

Published online: 03 Jun 2014 *

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