(PPT) QFD for WCM – DOKUMEN.TIPS

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Quality Function Deployment (QFD)Mohan Khond Mechanical
Engineering Department College of Engineering , Pune

Learning Objectives The basic aim of presentation is to describe
the methodology of QFD. Various Steps associated in QFD and the
development of interrelationship matrix. Application of QFD with
suitable illustration and case study .

Why QFD? Survival in world class competition Retaining and
enhancing market share Shorter product development cycle Customer
awareness

Quality Function Deployment Quality function deployment is
literal translation of the Japanese words HIN SHIT SU KINO TENKAI
The concept of QFD was introduced in Japan by YOJI AKAO in 1986 The
QFD methodology was developed at Mitsubishis Kobe Shipyard

Quality-Quality is what the customer says it is.(A. Feigenboum)
Function-In this case it is aim, purpose, operation,or action
Deployment – The meaning of deployment is to operationalised orto
bring out

QFD defined as a series of translations from customer needs to
product characteristics and ultimately to manufacturing procedures.
Quality function Deployment is a team-based management tool in
which customer expectation are used to drive the product
development process

It is disciplined approach to product design, engineering, and
production and to provide in depth evaluation of product. Customer
needs are operationalised as production process instruction that
will produce outputs with desired characteristics. This method has
been described as set of planning and communication routines that
facilitate cooperation between marketing, design, and manufacturing
during design process .

Characteristics of QFD Qualitative technique. Use of
Interdisciplinary team. Uncovering new problems and facts .
Customer driven

Steps in QFD List Customer Requirements. (WHATs) List Technical
Descriptors. (HOWs) Develop an relationship matrix between WHATs
and HOWs Develop an Interrelationship matrix between HOWs
Competitive Assessment Develop Prioritized Customer Requirement
Develop Prioritized Technical Descriptors Calculation of Absolute
and Relative Weight.

Fig-1 House of Quality

Case study A company that manufactures bicycle components such
as cranks, hub, rims, etc, wants to expands their product line by
also producing handlebar stems for mountain bikes.

Adding relationship Matrix to the House of Quality

Interrelationship Between Technical Descriptors

Adding prioritized customer requirement

Calculation For column :Absolute weight = (Important to
customer) (scale-up factor) (sales point) Absolute weight is
product of Column in the relationship matrix and importance to
customer e.g. For Aluminum(9×8+ 1×5+ 9×5+ 9×2+ 9×7+ 3×5+ 3×3)=227
Relative weight is determined by taking the dot product of column
in relationship matrix and column for absolute weight in
prioritized customer requirement For die casting (3×16+ 9×8+ 9×5+
3×2+ 0x18+ 3×5+ 9×3)=213

Conclusion It is based on the calculation of absolute weight for
technical descriptor and relative weight for technical descriptor
Greater value of absolute weight indicate that handle bar Aluminum
die casting .The relative weight also indicate that handle bar stem
should be Aluminum die casting .

Benefits of QFD An orderly way of obtaining information and
presenting it. Shorter product development cycle. Considerably
reduced start up cost Fewer engineering changes. Consensus decision
Preserve every thing in writing . Develop an environment of team
work.

Thank you