Least Cost Tolerance Allocation for Systems with time-variant Deviations

Conference contribution
(Conference Contribution)

Publication Details

Author(s): Walter M, Sprügel T, Wartzack S
Publication year: 2015
Conference Proceedings Title: Procedia CIRP
Pages range: 1-9
Language: English


This paper presents a methodology for the least cost tolerance allocation of systems with time-variant deviations, such as deformation, thermal expansion, mobility of parts and wear. By means of the approach, the product developer can identify the system’s optimal tolerance design against the backdrop of the diverging requirements: wide tolerances to reduce costs vs. narrow tolerances to ensure functionality. Therefore, Particle Swarm Optimization – a global statistical optimization technique – is applied to the time-variant tolerance-optimization problem to determine the tolerance range as well as a certain mean shift for each non-ideal dimension.

The practical use of the methodology is illustrated for a modified tolerance stack-up problem. We provide a comprehensive walkthrough of the methodology’s application to the stack-up problem. Therefore, the essential mathematical background, the required functional dependencies and the considered parameters are detailed in a step-by-step procedure. So, we aim to establish the application of the statistical tolerance-costoptimization in academia and industry and to motivate students and young graduates to apply this methodology by themselves.

FAU Authors / FAU Editors

Sprügel, Tobias
Lehrstuhl für Konstruktionstechnik
Walter, Michael
Lehrstuhl für Konstruktionstechnik
Wartzack, Sandro Prof. Dr.-Ing.
Lehrstuhl für Konstruktionstechnik

How to cite

Walter, M., Sprügel, T., & Wartzack, S. (2015). Least Cost Tolerance Allocation for Systems with time-variant Deviations. In Procedia CIRP (pp. 1-9). Hangzhou, CN.

Walter, Michael, Tobias Sprügel, and Sandro Wartzack. "Least Cost Tolerance Allocation for Systems with time-variant Deviations." Proceedings of the 13th CIRP conference on Computer Aided Tolerancing, Hangzhou 2015. 1-9.


Last updated on 2018-19-10 at 16:00