Name the different types of presses used in industry. State the working principle of press.

Name the different types of presses used in industry. State the working principle of press. 
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1 Answer

Answer :

Types of presses used in industry:

According to Source of power to ram:

1. Crank

2. Cam

3. Eccentric

4. Power screw

5. Rack and pinion

6. Toggle

7. Hydraulic

8. Pneumatic

According to design of frame:

1. Bench

2. Gap

3. Inclinable

4. Arch

5. Straight side

6. Horn

7. Pillar 

Working Principle of Press: A forming press, commonly shortened to press, is a machine tool that changes the shape of a work piece by the application of pressure. Presses can be classified according to their mechanism (source of energy used for operation) hydraulic, mechanical, pneumatic and respectively working on principle of Pascal law, Mechanical Pressure and Pneumatic Pressure.
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Sketch and label different types of gas welding flames. Also give application of any one flame.

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Explain construction and working of Combination Die with neat sketch.

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State different methods by which forged components can be made.

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Explain with neat sketch pilots and its types.

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Name the types of flames with application.

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Explain the shielded metal arc welding (SMAW) processes with neat sketch. State its two advantages and disadvantages.

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Explain the resistance spot welding process with neat sketch. State its two advantage and disadvantage.

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State salient features of CNC machines.

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State the factors on which weldability depends.

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