Optimizing Locator Position to Maximize Robustness in Critical Product Dimensions
Paper in proceeding, 2010

The way parts are located in relation to each other or in fixtures is critical for how geometrical variation will propagate and cause variation in critical product dimensions. Therefore, more emphasis should be put on this activity in early design phases in order to avoid assembly and production problems later on. In earlier literature, locator positions have been defined using optimization to reach a robust locating scheme. This implies that the total robustness of a part is optimized by placing the locators in an optimal way. Sometimes there are areas on parts that are more sensitive to variation than others. Therefore, this paper suggests an approach for optimizing the positions of locators in a locating scheme to maximize robustness in defined critical dimensions. A formulation of an optimization problem is presented, and an algorithm solving this in a heuristic approach is developed. Finally, this algorithm is applied on an industrial example.

Robust Design

Locating Scheme

Tolerance Allocation



Johan Lööf

Chalmers, Product and Production Development, Product Development

Lars Lindkvist

Chalmers, Product and Production Development, Product Development

Rikard Söderberg

Chalmers, Product and Production Development, Product Development

ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2009; San Diego, CA; United States; 30 August 2009 through 2 September 2009

Vol. 2 PARTS A AND B 515-522
978-0-7918-4899-9 (ISBN)

Subject Categories

Aerospace Engineering

Computational Mathematics

Manufacturing, Surface and Joining Technology

Reliability and Maintenance

Other Materials Engineering





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