Blank size when there is corner radius on punch (d < 10r) Calculator

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Engineering	Production Engineering ↺
Production-Engineering	Sheet Metal Operations ↺

✖Outer diameter of shell is the maximum width of object under consideration.ⓘ Outer diameter of shell [d]			+10% -10%
✖Corner radius on punch is that radius which is provided on the outer edge of the punch.ⓘ Corner radius on punch [r]			+10% -10%
✖Height of the shell is the longitudinal length measured along its axisⓘ Height of the shell [h]			+10% -10%

✖Blank Diameter is the diameter of the blank used.ⓘ Blank size when there is corner radius on punch (d < 10r) [BD]

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Rajat Vishwakarma

University Institute of Technology RGPV (UIT - RGPV), Bhopal

Rajat Vishwakarma has created this Calculator and 100+ more calculators!

Kethavath Srinath

Osmania University (OU), Hyderabad

Kethavath Srinath has verified this Calculator and 500+ more calculators!

< 6 Other formulas that you can solve using the same Inputs

Drawing Force for Cylindrical shells

Drawing force=pi*Outer diameter of shell*Thickness of Sheet or Blank*Yield Strength*((Blank Diameter/Outer diameter of shell)-A Constant to cover friction) GO

Blank size when there is corner radius on punch (15r ≤ d ≤ 20r)

Blank Diameter=sqrt((Outer diameter of shell)^2+4*Outer diameter of shell*Height of the shell-0.5*Corner radius on punch) GO

Blank size when there is corner radius on punch (10r ≤ d ≤ 15r)

Blank Diameter=sqrt((Outer diameter of shell)^2+4*Outer diameter of shell*Height of the shell-Corner radius on punch) GO

Blank Size for Drawing Operation

Blank Diameter=((Outer diameter of shell^2)+(4*Outer diameter of shell*Height of the shell))^0.5 GO

Blank diameter from percent reduction

Blank Diameter=Outer diameter of shell*(1-(Percent reduction after drawing/100))^(-1) GO

Percent reduction after drawing

Percent reduction after drawing=100*(1-(Outer diameter of shell/Blank Diameter)) GO

< 4 Other formulas that calculate the same Output

Blank size when there is corner radius on punch (15r ≤ d ≤ 20r)

Blank Diameter=sqrt((Outer diameter of shell)^2+4*Outer diameter of shell*Height of the shell-0.5*Corner radius on punch) GO

Blank size when there is corner radius on punch (10r ≤ d ≤ 15r)

Blank Diameter=sqrt((Outer diameter of shell)^2+4*Outer diameter of shell*Height of the shell-Corner radius on punch) GO

Blank Size for Drawing Operation

Blank Diameter=((Outer diameter of shell^2)+(4*Outer diameter of shell*Height of the shell))^0.5 GO

Blank diameter from percent reduction

Blank Diameter=Outer diameter of shell*(1-(Percent reduction after drawing/100))^(-1) GO

Blank size when there is corner radius on punch (d < 10r) Formula

Blank Diameter=sqrt((Outer diameter of shell-2*Corner radius on punch)^2+4*Outer diameter of shell*(Height of the shell-Corner radius on punch)+2*pi*Corner radius on punch*(Outer diameter of shell-0.7*Corner radius on punch))
BD=sqrt((d-2*r)^2+4*d*(h-r)+2*pi*r*(d-0.7*r))

More formulas

Bend Allowance GO

Punch Load GO

Clearance Between Two Shears GO

Punching Force for Holes Smaller Than Sheet Thickness GO

Blank Size for Drawing Operation GO

Drawing Force for Cylindrical shells GO

Blank size when there is corner radius on punch (15r ≤ d ≤ 20r) GO

Blank size when there is corner radius on punch (10r ≤ d ≤ 15r) GO

Ironing Force after drawing GO

Mean diameter of the shell after ironing GO

Thickness of shell before ironing GO

Average of tensile strength before and after ironing GO

Percent reduction after drawing GO

Blank diameter from percent reduction GO

Shell diameter from percent reduction GO

How to determine blank size for drawing?

One of the first jobs of the draw die designer is to find the size of the blank to be used for making a given cup. It is often difficult to find a blank of the exact size required for making a given shell because of thinning and thickening of sheet during drawing. The calculation could be based on volume, surface area or by layout. These are only the theoretical blank sizes, based on the surface area of the shell and blank. For practical purposes, it is necessary to add additional allowances to provide for trimming of the uneven and irregular rim of the deep drawn cup.

How to Calculate Blank size when there is corner radius on punch (d < 10r)?

Blank size when there is corner radius on punch (d < 10r) calculator uses Blank Diameter=sqrt((Outer diameter of shell-2*Corner radius on punch)^2+4*Outer diameter of shell*(Height of the shell-Corner radius on punch)+2*pi*Corner radius on punch*(Outer diameter of shell-0.7*Corner radius on punch)) to calculate the Blank Diameter, The Blank size when there is corner radius on punch (d < 10r) is that blank size which is required to form final product from drawing. Blank Diameter and is denoted by BD symbol.

How to calculate Blank size when there is corner radius on punch (d < 10r) using this online calculator? To use this online calculator for Blank size when there is corner radius on punch (d < 10r), enter Outer diameter of shell (d), Corner radius on punch (r) and Height of the shell (h) and hit the calculate button. Here is how the Blank size when there is corner radius on punch (d < 10r) calculation can be explained with given input values -> 0.017068 = sqrt((0.01-2*0.0005)^2+4*0.01*(0.005-0.0005)+2*pi*0.0005*(0.01-0.7*0.0005)).

FAQ

What is Blank size when there is corner radius on punch (d < 10r)?

The Blank size when there is corner radius on punch (d < 10r) is that blank size which is required to form final product from drawing and is represented as BD=sqrt((d-2*r)^2+4*d*(h-r)+2*pi*r*(d-0.7*r)) or Blank Diameter=sqrt((Outer diameter of shell-2*Corner radius on punch)^2+4*Outer diameter of shell*(Height of the shell-Corner radius on punch)+2*pi*Corner radius on punch*(Outer diameter of shell-0.7*Corner radius on punch)). Outer diameter of shell is the maximum width of object under consideration, Corner radius on punch is that radius which is provided on the outer edge of the punch and Height of the shell is the longitudinal length measured along its axis.

How to calculate Blank size when there is corner radius on punch (d < 10r)?

The Blank size when there is corner radius on punch (d < 10r) is that blank size which is required to form final product from drawing is calculated using Blank Diameter=sqrt((Outer diameter of shell-2*Corner radius on punch)^2+4*Outer diameter of shell*(Height of the shell-Corner radius on punch)+2*pi*Corner radius on punch*(Outer diameter of shell-0.7*Corner radius on punch)). To calculate Blank size when there is corner radius on punch (d < 10r), you need Outer diameter of shell (d), Corner radius on punch (r) and Height of the shell (h). With our tool, you need to enter the respective value for Outer diameter of shell, Corner radius on punch and Height of the shell and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Blank Diameter?

In this formula, Blank Diameter uses Outer diameter of shell, Corner radius on punch and Height of the shell. We can use 4 other way(s) to calculate the same, which is/are as follows -

Blank Diameter=((Outer diameter of shell^2)+(4*Outer diameter of shell*Height of the shell))^0.5
Blank Diameter=sqrt((Outer diameter of shell)^2+4*Outer diameter of shell*Height of the shell-0.5*Corner radius on punch)
Blank Diameter=sqrt((Outer diameter of shell)^2+4*Outer diameter of shell*Height of the shell-Corner radius on punch)
Blank Diameter=Outer diameter of shell*(1-(Percent reduction after drawing/100))^(-1)

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