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Manufacturing Handbook of Best Practices 2011 Part 13

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Tham khảo tài liệu 'manufacturing handbook of best practices 2011 part 13', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 13 Robust Design John W. Hidahl Robust design is a methodology for improving product quality and reducing cost. It is generally recognized as being Dr. Genichi Taguchi s approach for determining an optimum set of design parameters that maximize quality maximize performance and minimize cost. Robust design techniques are applicable to all mechanical electrical and electronic hardware configurations. This well-proven methodology provides an efficient and effective disciplined approach to developing optimized designs in a design-to-cost DTC or cost-as-an-independent variable CAIV environment. Today most U.S. engineering organizations focus on system engineering design and system tolerance design to achieve their performance requirements. This often leads to excessive product manufacturing costs and product delivery-cycle times. By forcing the system tolerance design process to minimize or eliminate the performance parameter variability that can have a large negative impact on the system operability and functionality higher costs and longer cycle times are inadvertently imposed upon manufacturing. The higher costs arise from added inspections and higher scrap rework and repair of the product due to the establishment of tight design tolerances. The longer cycle times result from all the added manufacturing process steps that must be performed to deliver quality products. The proper use of Taguchi s parameter design techniques to optimize performance while reducing sensitivity to noise factors is a preferred method that minimizes or eliminates the requirement for tight system design tolerancing. Beginning in the 1950s Dr. Taguchi developed several new statistical tools and quality improvement concepts based on statistical theory and design of experiments. The robust design method provides a systematic and efficient approach for finding a near-optimum combination of design parameters producing a product that is functional exhibits a high level of performance and is .