Figure below contains a depiction of an embossing press in which a single-acting cylinder is used...

Question

Figure below contains a depiction of an embossing press in which a single-acting cylinder is used for ejecting the processed parts. With the help of circuit diagrams, describe how this cylinder can be activated using 2/2 and 3/2 valves. Compare the two diagrams with regard to extension and retraction of the piston rod and draw your conclusions. Also, calculate the advancing pressure (p) for a piston rod whose diameter d = 60 mm and with a load weight F = 5 kN. Ignore the resistances for this calculation.

Robert · Accepted Answer

Ans. 1
Part-A 
In the given diagram a mechanical press for the forging operation  and a piston is 
attached. The working is after completion of the mechanical work by the press, the 
final product has to retrieve.  
So it is necessary to expansion and retraction of the piston automatically so that the 
material can retrieve. 
First off this entire task is being performed by the help of 2-2 valve, 
The circuit diagram of the 2-2 valve with the piston, 
 
In the above circuit diagram, 
The IN is to start the process of expansion both of the valve are button operated, it 
means they are manually operated.

Figure below contains a depiction of an embossing press in which a single-acting cylinder is used for ejecting the processed parts. With the help of circuit diagrams, describe how this cylinder can be...

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