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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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