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7/30/2019 Lecture 05 OM
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Prof. Arun Mishraarunjimishra@gmail.com
9893686820
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Product Development Process
Designing for the Customer
Design for Manufacturability
Process Selection: Products
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Learning Objectives
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Product Design: Concerned with form and function
of a product. It refers to the arrangement of elements
or parts that collectively form a product.
Process Design: Concerned with the overallsequence of operations required to achieve the
design specification of the product.
Production Design: Concept of designing products
from the point of view of producibility.
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A good product design can improve themarketability of a product by making it easier to
operate or use, upgrading its quality, improving its
appearance, and/or reducing manufacturing costs.
An excellent design provides competitive
advantage to the manufacturer, by ensuring
appropriate quality, reasonable cost and theexpected product features.
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1) The overall objective is profit generation inthe long run.
2) To achieve the desired product quality.
3) To reduce the development time and cost tothe minimum.
4) To reduce the cost of the product.
5) To ensure producibility or manufacturability(design for manufacturing and assembly).
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i. Customer requirements
ii. Convenience of the operator or useriii. Trade off between function and form
iv. Types of materials used
v. Work methods and equipments
vi. Cost/Price ratio
vii. Product quality
viii. Process capability
ix. Effect on existing productsx. Packaging
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i. Designing for the customer
Industrial design Voice of the customer Quality function deployment (QFD)
ii. Designing for Manufacture and Assembly (DFMA) Over-the-wall approach Concurrent engineering Design for Manufacturing (DFM) Design for
Assembly (DFA)
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Designing for Manufacturing (DMF): used toindicate the designing of products that arecompatible with organizationscompatibility. Includes following guidelines; Designing for minimum number of parts
Developing modular design. Designing for minimum part variations (using
standardized parts). Designing parts for ease of fabrication.
Designing for Assemble (DFA): focuses onreducing the number of parts in a product oron assembly methods.
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1. Feasibility analysis2. Product specifications3. Process specifications4. Prototype development5. Design review6. Market test7. Product introduction
8. Follow-up evaluation
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Process selection refers to the way production of goodsor services is organised.
Three primary questions to be addressed before decidingon process selection are:
(i) How much variety of products or services willthe system need to handle?
(ii) What degree of equipment flexibility will beneeded?
(iii) What is the expected volume of output?
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Types of Processes: four types of processes:Conversion: Changing iron ore into steel ormaking tooth-paste from various ingredients.
Fabrication: Changing raw materials into somespecific form e.g. making sheet-metal into bodyof a car or forming gold into crown for a tooth.
Assembly: Assembling car, putting toothpastetubes into a box, fastening dental crown insomebodys mouth.
Testing processes: Testing of various products byvarious means for strength or defects etc.
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Line flow
Batch flow Project flow
Line Flow
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Batch Flow
Project Flow
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