Tolerance design for products with asymmetric quality losses

Abstract

This paper presents a design method for allocating dimensional tolerances of products with asymmetric quality losses. The design strategies proposed include the adjustment of manufacturing target and the approach of robust tolerance design. The average quality losses of batch products are computed differently in accordance with the distribution of functional characteristics. The robust tolerance design is based on the balance between manufacture cost and quality loss expected. An illustrative example shows the proposed procedure for the tolerance design of a helical spring.