QFD (Quality Function Deployment) was first developed in Japan in the late sixties. The Quality Method is used for establishing the customer requirements to implement this directly in the necessary technical solutions.
QFD is used as a preventive tool for product definition and has found the entrance into Europe through the USA.
QFD ensures that the definition of product characteristics through the development and the subsequent selection of the means of production, methods and control mechanisms are determined solely by the needs of future customers.
As a tool for the targeted implementation of customer requirements and quality requirements into technical specifications it serves the House of Quality (HoQ). This is an analytical, communication and planning tool for every phase of product development.
The practical use is linked to some conditions in order to ensure a smooth and efficient operation. Often in the development methods used are Design of Experiments (DoE) “Shainin- and Taguchi methods.
The use of QFD requires a strong team oriented approach in the company. The support of management is a necessary prerequisite. Not only the employees of the development departments is necessary, but also the marketing / sales. The working groups are usually headed by a neutral QFD facilitator who is responsible for compliance with the rules QFD.
QFD can be divided into different phases:
• QFD 0: Market Analysis
• QFD 1: Product Planning
• QFD 2: Parts Planning
• QFD 3: Production Planning
• QFD 4: Test Planning
QFD resolves several interconnected tasks:
• Direct introduction of the customer requirements.
• Define the competitive advantage by surprising solutions for the customer (enthusiastic customer).
• Understand the different requirements of customers, developers, producers, retailers.
• Create Review profiles, interactions of each request / solution features.
• Setting for the quality of the product important from a customer perspective and therefore decisive ducks for sales success features.
• Determine the cost – value relations.
• Consistent, methodical communication of objectives for all areas, including a comprehensible documentation of the entire process.
The results from the full application of the QFD method are:
• Rapid onset of development.
• Little change.
• Short production time.
• Profitable product.
• Satisfied, often enthusiastic customers.
So today is QFD of the most successful tools for product planning and product definition.
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