State salient features of CNC machines.

State salient features of CNC machines.
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Salient Features of CNC machines….. 1. A part program can be fed to the controller unit through a keyboard. 2. The part program once entered can be used again and again. That is why the CNC controller is termed as soft wired control. 3. The part program can be edited whenever required. 4. For common and repetitive operations, a sub program can be created and called in the main program whenever required, thereby reducing the main program substantially. 5. The CNC machines have simulation facility whereby the part program can be checked for its accuracy without actual running the machine. 6. The CNC control unit allows compensation for any changes in the dimensions of cutting tools caused due wear or otherwise. 
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State function of preparatory and miscellaneous code with two examples each.

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Description : State blasting and tumbling.

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Enlist die accessories and state function of knock out

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State terminology used in presses

Description : State terminology used in presses

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Classify forging. State Fullering

Description : Classify forging. State Fullering

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State objective of surface cleaning.

Description : State objective of surface cleaning.

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State the function of „G‟ Codes and „M‟ codes with any two examples.

Description : State the function of „G‟ Codes and „M‟ codes with any two examples.

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State the procedure for developing the part program.

Description : State the procedure for developing the part program. 

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State the working principle of gas welding.

Description : State the working principle of gas welding.

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State “Plane washer” making process with use of combination die.

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State the forging sequence for production of spanner.

Description : State the forging sequence for production of spanner.

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State the function of following codes: (1) G18, (2) G71, (3) M05, (4) M30

Description : State the function of following codes: (1) G18, (2) G71, (3) M05, (4) M30

Last Answer : G18 – aligns the arc plane with the X and Z axes G71-Metric Input or input in mm, M05- Spindle stop M30-End of program & reset 

State the function of pilot and stopper in a die.

Description : State the function of pilot and stopper in a die.

Last Answer : Function of pilot and Stopper: Pilots: The pilot positions the stock strip accurately and bring it into proper position for blanking and piercing operations. They act as guides during the piercing or blanking ... it is fed below the punch to give the greatest output in given length of the plate.