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Process selection for assembled products based on an overall evaluation of cost, time and performance
Abstract
Design For Manufacturing (DFM) and Design For Assembly (DFA) have become important design philosophies in product design practice. Component process selection and assembly combination decisions are key issues in DFM and DFA. As philosophies, it is important and imperative to derive some general guidelines in these aspects to support product design at early design stages. Since low product cost, short time-to-market, and high product performance are the three most important goals in the development of consumer products, and since injection molding and stamping are the two most commonly used manufacturing processes in the production of consumer products, in this dissertation, we focus on the process selection of injection molding and stamping based on the comparison of product costs (including tooling cost, processing cost, material cost and assembly cost), production time periods (including tooling time period, processing time period, and assembly time period), and product performance (including strength, stiffness, corrosion resistance, aesthetics, etc.). Some general guidelines and conclusions to determine if a component should be injection molded or stamped, and if an assembly should be combined into a single component or not are generated. A hybrid evaluation method based on the Pahl-Beitz method and the Dominic method is developed for product performance evaluation. A product evaluation method based on an overall evaluation of cost, time, and performance is proposed as well. In addition, several examples with components and assemblies from real products are analyzed and evaluated by using the guidelines and the overall evaluation method to illustrate the concepts and the feasibility of the approaches introduced.
Subject Area
Mechanical engineering|Industrial engineering
Recommended Citation
Hu, Weiyi, "Process selection for assembled products based on an overall evaluation of cost, time and performance" (1996). Doctoral Dissertations Available from Proquest. AAI9638972.
https://scholarworks.umass.edu/dissertations/AAI9638972