Robust Tolerance Design of Systems with varying ambient Temperature influence due to worldwide manufacturing and operation

Sprügel T, Walter M, Wartzack S (2014)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2014

Pages Range: 1189-1198

Conference Proceedings Title: International Design Conference - DESIGN

Event location: Dubrovnik HR

URI: https://www.mfk.uni-erlangen.de?file=pubmfk_56377eb78a783

Abstract

In today’s industrial environment products must be developed and brought to market in short time. To shorten the time-to-market between the product idea and the start-of-production various methods were developed over the last decades, which are applied during product development (e. g. concurrent engineering). However, the product developer still has to face additional challenges in modern product development [Liu 2009]. In this context, an extended relevance and discussion on quality topics and in particular, Robust Design Methods (RDM), both in industry and research, can be found in recent years [Gremyr 2003, Liu 2009, Eifler 2013]. These RDMs (which can be principles, tools, methods, metrics etc.) are used to analyze a product in order to reduce the sensitivity of its design parameters towards variation [Eifler 2013].

However, deviations of parts are inherently inevitable due to “axiom of manufacturing imprecision” [Zhang 2011]. Consequently, the product developer has to define appropriate tolerances to limit these dimensional and geometrical deviations and thus, to ensure a certain quality of the entire product [Wartzack 2011]. Therefore, statistical tolerance analyses are widely used in engineering design to quantify the effects of appearing deviations on functional key characteristics (FKCs) of a product [Jayaprakash 2012, Tsai 2012, Chase 1991, Walter 2013]. Tolerance analyses lead to significant cost reductions, as only required tolerance ranges may be manufactured [Söderberg 2006]. Unnecessarily narrow tolerance ranges, which lead to high production costs can be avoided or significantly reduced.

However, the analysis of only dimensional and geometrical tolerances is not sufficient to evaluate functionality and assemblability of a system and thus, to achieve a robust design. Other aspects, such as deformation, thermal expansion, wear, etc. need to be integrated in tolerance analysis [Scholz 1995, Chase 1991]. However, existing approaches only consider the impact of these additional effects.

So the authors claim that a holistic robust tolerance design essentially requires the consideration of both the impact as well as the cause of these deviations. These causes can be both technical (such as forces, friction) and non-technical (the company’s choice on the place of production, quality philosophy, qualification of workers, etc.). This is even the more serious, since traditionally product developers hardly take into account non-technical causes during product development and tolerance analyses, particularly.

Authors with CRIS profile

Tobias Sprügel Chair of Engineering Design Michael Walter Chair of Engineering Design Sandro Wartzack Chair of Engineering Design

How to cite

APA:

Sprügel, T., Walter, M., & Wartzack, S. (2014). Robust Tolerance Design of Systems with varying ambient Temperature influence due to worldwide manufacturing and operation. In Marjanovic, D.; Culley, S.; Lindemann, U.; McAloone, T.; Weber, C. (Eds.), International Design Conference - DESIGN (pp. 1189-1198). Dubrovnik, HR.

MLA:

Sprügel, Tobias, Michael Walter, and Sandro Wartzack. "Robust Tolerance Design of Systems with varying ambient Temperature influence due to worldwide manufacturing and operation." Proceedings of the DESIGN Conference 2014, Dubrovnik Ed. Marjanovic, D.; Culley, S.; Lindemann, U.; McAloone, T.; Weber, C., 2014. 1189-1198.

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