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Research and discuss some of the guidelines of economical design and how you would work up...

Research and discuss some of the guidelines of economical design and how you would work up a cost comparison for producing a part of your choice.

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Economical design is the application of using only what is necessary or what resorces you have to achieve your theme or goals in the design.

There is no excess or no waste, everything is clean, concise and looks excellent.

It's based around the concept of efficiency.

The available materials are used in the best possible way.

With limited resources also, we will try to achieve more and more from it.

There is no extra fillers added to the work, only the bare essentials to get what you need.

Cost comparison:

Suppose we are making an electric motor. Lets take an example of a DC motor of 25mm diameter with shaft diameter of 3mm.

That motors contains bearings, shafts, outer cylindrical body, commutation system, plastic molded end caps and all.

Suppose the standard cost to make the motor is 2 dollars.

We can reduce this cost by doing cost analysis or by taking the individual part, if we are doing mass production.

Let's take the example of bearings in this case. The bearing price constitutes the highest price percentage in the motor and it is also the heart of the motor. Usually if we take 8mm bearing (OD) with 3mm(ID), there are many factors that decides the cost of bearing like lubrication factor, bearing material, etc.

So based on the application, if we do the value engineering in the best possible way, we can select the low cost bearing without affecting the process efficiency by analyzing all the parameters.

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