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Types of mechanical forces

A force exerted on a body can cause a change in either the shape or the motion of the body.The unit of force in SI system is the Newton(N) and CGS system is dyne.No solid body is perfectly rigid and when force are applied to it,changes in dimension occur.such changes are not always perceptible to the human eye since they are negligible. For the example,The span of a bridge will sag under the weight of a vehicle and a spanner will bend slightly when tightening a nut. It is also important for civil engineers and designers to appreciate the effects of forces on materials.Together with their mechanical properties of the materials. There three main types of mechanical forces that can act on a body.They are 1)Tensile force 2) compressive force and 3) shear force

ADVANTAGES AND LIMITATIONS OF BROACHING:

Broaching is an interesting machining process which is used in mass production. It has certain advantages and limitations as compared to the other machining processes.these are given below.

ADVANTAGES :

1) Fast and simple process.

2)High degree of accuracy and finish is possible.

3)Any shape of profile can be easily machined.

4) Machining process is completed with one stroke of broach.

5) Life of broach tool is high.

6)Cutting temperature and tool wear is low.

7) Doesn't require a highly skilled operator.

8)Cutting force acts in the clamping direction I.e.,it doesn't tends to lift the workpiece from fixture.

9)cutting fluids can be applied more easily and effectively.

10)Most economical for mass production of components.



LIMITATIONS:

1) Not economical for small quantity productions.

2)Cost of broach is high.

3) Tool grinding (broach sharpening) is difficult and expensive.

4) Not suitable to machine a surface having obstruction.

5) The work must be strong enough to with stand cutting forces.

6) Very light and delicate jobs cannot broached easily.

7)Large amount of metal cannot be removed by broaching.

Comments

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  2. Broach Tools | BroachIndia



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  3. Thanks you very much for the information you shared, it's all I've been looking for..
    See here now

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