Shear on Punch or Die Solution

STEP 0: Pre-Calculation Summary
Formula Used
Shear on the Punch = Perimeter of Cut*Stock Thickness*(Stock Thickness*Punch Penetration as Fraction)/Maximum Shear Force
tshear = Lcut*t*(t*p)/Fs
This formula uses 5 Variables
Variables Used
Shear on the Punch - (Measured in Meter) - Shear on the punch is applied during punching process on punch or die, to reduce the required shearing force.
Perimeter of Cut - (Measured in Meter) - Perimeter of Cut is the perimeter of the punched product.
Stock Thickness - (Measured in Meter) - Stock Thickness generally refers to the initial thickness of raw material or stock material before any machining or processing takes place.
Punch Penetration as Fraction - Punch Penetration as Fraction is the relative amount of punch which penetrates the work.
Maximum Shear Force - (Measured in Newton) - Maximum Shear Force is the max. force due to shearing between two planes.
STEP 1: Convert Input(s) to Base Unit
Perimeter of Cut: 616.6667 Millimeter --> 0.6166667 Meter (Check conversion here)
Stock Thickness: 8.99 Millimeter --> 0.00899 Meter (Check conversion here)
Punch Penetration as Fraction: 0.499985 --> No Conversion Required
Maximum Shear Force: 0.015571 Newton --> 0.015571 Newton No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
tshear = Lcut*t*(t*p)/Fs --> 0.6166667*0.00899*(0.00899*0.499985)/0.015571
Evaluating ... ...
tshear = 0.00160033296476588
STEP 3: Convert Result to Output's Unit
0.00160033296476588 Meter -->1.60033296476588 Millimeter (Check conversion here)
FINAL ANSWER
1.60033296476588 1.600333 Millimeter <-- Shear on the Punch
(Calculation completed in 00.020 seconds)

Credits

Created by Rajat Vishwakarma
University Institute of Technology RGPV (UIT - RGPV), Bhopal
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Verified by Nishan Poojary
Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi
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8 Punch Operation Calculators

Punching Force for Holes Smaller than Sheet Thickness
Go Punching Force or Load = (Punch or Ram Diameter*Blank or Sheet Thickness*Tensile Strength)/(Punch or Ram Diameter/Blank or Sheet Thickness)^(1/3)
Maximum Shear Force given Shear Applied to Punch or Die
Go Maximum Shear Force = Perimeter of Cut*Stock Thickness*(Stock Thickness*Punch Penetration as Fraction)/Shear on the Punch
Shear on Punch or Die
Go Shear on the Punch = Perimeter of Cut*Stock Thickness*(Stock Thickness*Punch Penetration as Fraction)/Maximum Shear Force
Stock Thickness when Shear used on Punch
Go Stock Thickness = sqrt((Maximum Shear Force*Shear on the Punch)/(Perimeter of Cut*Punch Penetration as Fraction))
Blank Size when there is Corner Radius on Punch
Go Blank Diameter = sqrt(Outer Shell Diameter^2+4*Outer Shell Diameter*Shell Height-0.5*Corner Radius on Punch)
Perimeter of Cut when Shear is Applied
Go Perimeter of Cut = (Maximum Shear Force*Shear on the Punch)/(Punch Penetration as Fraction*Stock Thickness^2)
Penetration of Punch as Fraction
Go Punch Penetration as Fraction = (Maximum Shear Force*Shear on the Punch)/(Perimeter of Cut*Stock Thickness^2)
Punch Load
Go Punch Load = Perimeter of Cut*Bar Thickness*Strength Coefficient

Shear on Punch or Die Formula

Shear on the Punch = Perimeter of Cut*Stock Thickness*(Stock Thickness*Punch Penetration as Fraction)/Maximum Shear Force
tshear = Lcut*t*(t*p)/Fs

Why Shear is provided on punch?

To reduce the required shearing force on the punch, for example to accommodate a large component on a smaller capacity punch press, shear is ground on the face of the die or punch. The effect of providing shear is to distribute the cutting action over a period of time depending on the amount of shear provided. Thus the shear is relieved of the punch or die face so that it contacts the stock over a period of time rather than instantaneously. It may be noted that providing the shear only reduces the maximum force to be applied but not the total work done in shearing the component.

How to Calculate Shear on Punch or Die?

Shear on Punch or Die calculator uses Shear on the Punch = Perimeter of Cut*Stock Thickness*(Stock Thickness*Punch Penetration as Fraction)/Maximum Shear Force to calculate the Shear on the Punch, Shear on punch or die is provided to decrease the shearing force required to cut the shape out of blank during punching. Shear on the Punch is denoted by tshear symbol.

How to calculate Shear on Punch or Die using this online calculator? To use this online calculator for Shear on Punch or Die, enter Perimeter of Cut (Lcut), Stock Thickness (t), Punch Penetration as Fraction (p) & Maximum Shear Force (Fs) and hit the calculate button. Here is how the Shear on Punch or Die calculation can be explained with given input values -> 1603.895 = 0.6166667*0.00899*(0.00899*0.499985)/0.015571.

FAQ

What is Shear on Punch or Die?
Shear on punch or die is provided to decrease the shearing force required to cut the shape out of blank during punching and is represented as tshear = Lcut*t*(t*p)/Fs or Shear on the Punch = Perimeter of Cut*Stock Thickness*(Stock Thickness*Punch Penetration as Fraction)/Maximum Shear Force. Perimeter of Cut is the perimeter of the punched product, Stock Thickness generally refers to the initial thickness of raw material or stock material before any machining or processing takes place, Punch Penetration as Fraction is the relative amount of punch which penetrates the work & Maximum Shear Force is the max. force due to shearing between two planes.
How to calculate Shear on Punch or Die?
Shear on punch or die is provided to decrease the shearing force required to cut the shape out of blank during punching is calculated using Shear on the Punch = Perimeter of Cut*Stock Thickness*(Stock Thickness*Punch Penetration as Fraction)/Maximum Shear Force. To calculate Shear on Punch or Die, you need Perimeter of Cut (Lcut), Stock Thickness (t), Punch Penetration as Fraction (p) & Maximum Shear Force (Fs). With our tool, you need to enter the respective value for Perimeter of Cut, Stock Thickness, Punch Penetration as Fraction & Maximum Shear Force and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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