28-11-2012, 05:28 PM
Product Design
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Design is the conversion of knowledge and requirement into a form, convenient and suitable for use or manufacture. Product design deals with its form and function. Forms implies the shape and appearance of the product. While function is related to the working of the product. Designing is essential before actual transformation of raw material into finished product.
Acc to C.S Devercell
Design in its broadest sense includes the whole development of the product through all the preliminary stages until actual manufacturing stages.
Repairability
A design should be such that it is easily repairable whenever necessary.
Modular design
The product should be composed of detachable components or sub assemblies so that whenever any part or component fails that part is replaced by new one.
Redesigning capability
Redesign is usually necessary for the problems that cannot be foreseen. Old products are continually being redesigned and new products are developed changes in the design should be made only for important reasons. These may be in the form of
New drawings
New operations list
New tools or machines
New customers desires, changing, markets, new technologies and other factors are always creating new trends in the design of product.
Miniaturization
Moore Says “If your product is of room size make it of desk size, if it is of desk size, make it portable. When you cannot shrink any more, pack twice as much power into it”. We can say, “Make it smaller and lighter in weight”.
sometimes the whole product may not be miniaturized but some parts or components of it ma be reduced in size, without affecting its functional utility.
Wires and Tubing
Design should have well planned wiring system and its pathway e.g. One can use printed circuits, which are more compact and less expensive than usual wiring system. In any equipment electric wires may run into hundreds similarly for, lubrication purposes and passing gases, air tubing is embedded in products like automobiles. The pathways of wires and tubes must be properly planned.
Drawings and Specifications
The drawings of the design should be explicit in exact size and shape of the product, its parts and subcomponents.
Reliability
It is the portability of no mape faliuer of the product during use. The solution is to have duplicate components operating in parallel i.e. if one fails, its duplicate may be put into operation.
Maintainability
The lubrication points and other areas of routine servicing. The after sale service feedback is quite valuable in improving upon the reliability and maintainability of product.
Product Development
Product development is specialized activity. Which may result in creation of new products or modification in the production process to produce the same product. It can divided into two main categories.
Introduction of new product
Improvement of existing products
Standardization
This means fixation of some appropriate size, shape, quality, manufacturing process, weight and other characteristics as standards to manufacture a product of desired variety and utility e.g. manufacture of televisions sets of standard size of the screen using standard components and technology, shaving blades are made of standard size and shape to suit every kind of razor.
Advance product planning
Advance product planning otherwise called feasibility study . It includes preliminary market analysis, creating alternative concepts for the product, classifying operational requirement, establishing design criteria and their priorities and estimating logistics requirements for producing, distributing and maintaining the product in the market . Conceptual design of the product shall emerge e.g. the conceptual design for pen would articulate its length, weight, strength, shape, colour, retail price and so on.
Product use and support
Important stages of product development considers support for consumers who use the product support system might.
Educate user on specific application of the product.
Provide warranty and repair services.
Distributes replacement part.
Upgrade the product with design improvement.