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Unformatted text preview: (c) 2002 QFD Insitute QFD to Direct Value Engineering in the Design of a Brake System By Jim Dimsey (QFD Black Belt), Product Engineer, Hayes Brake, LLC Glenn Mazur (QFD Red Belt4l), Japan Business Consultants, Ltd. Abstract Value Engineering is a powerful methodology to reduce the cost of mechanical systems by looking for a mismatch between the function of a component and the cost of the com- ponent. Hayes Brake, in the design of a new braking system, used QFD to determine the importance of various braking functions and performance levels to users, and then subse- quently design both a lower-cost alternative as well as a high performance model. This paper will describe the customer evaluation process including a web-based questionnaire, the deployment through the House of Quality to a Function Analysis, multiple cost mod- eling studies, and the design concepts that were created and proposed to the OEM. This product is still waiting approval from the OEM. Key Words Brakes, QFD, Quality Function Deployment, Value Engineering What is QFD Quality methodology traditionally focused on improving existing products and processes based on reported problems from the field or factory floor. Japan, in the 1960s expanded this approach in two significant directions - continuous improvement and Quality Func- tion Deployment (QFD). Continuous improvement, even in its latest manifestation, Six Sigma, does not wait for problems to occur but in the spirit of the 5th of the late Dr. Deming's 14 Points for Transforming Management, "Improve constantly and forever every process for planning, production and service," seeks out opportunity to add value to the company and product. QFD is an approach that directs these improvement efforts specifically to new products and services. The ideal is to design and build quality as defmed by customer satisfaction and value into new products. In other words, to get it right the first time. Further, QFD looks to improve the new product development (NPD) process itself by reengineering the cross-functional contributions of each department to assure they meet certain standards of (c) 2003 QFD Insitute timeliness, content, and quality. These two aspects of Comprehensive QFD are shown in the original concept model developed by Dr. Yoji Akao, co-founder ofQFD, in Figure 1. Q- .. o a. .0 . ::I Ul ... GI ~ 'i "0 C aI " ; GI " GI ON >- Iii .C: '11:I : I. gl .. Co ti ::I "0 e a. e ~eCl) ~.~ E- .. ns(J~ :::seO a:::sa. U-CI) c Task Deployment (for Quality) Figure 1. Comprehensive QFD Concept. [Akao 19901 In this paper we will focus on the top portion of figure 1, Comprehensive Quality De- ployment, and our study will look at various deployments such as quality deployment, function deployment, technology deployment, and reliability deployment. For cost de- ployment we went further and employed Value Engineering principles to reduce costs of the new brake system....
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This note was uploaded on 05/12/2010 for the course EIN 6227 taught by Professor Hartman during the Spring '08 term at University of Florida.
- Spring '08