Blank Size when there is Corner Radius on Punch Calculator

✖Outer Diameter of Shell is the measurement across the widest part of any cylindrical object.ⓘ Outer Diameter of Shell [d_s]			+10% -10%
✖Shell Height is the longitudinal length measured along its axis.ⓘ Shell Height [h_shl]			+10% -10%
✖Corner Radius on Punch is that radius or rounded edge or curvature present on the punch used in a manufacturing process.ⓘ Corner Radius on Punch [r_cn]			+10% -10%

✖Blank Diameter refers to the initial diameter of the material before any forming or shaping process is applied.ⓘ Blank Size when there is Corner Radius on Punch [d_bl]

⎘ Copy

👎

Formula

✖

Blank Size when there is Corner Radius on Punch

Formula

`"d"_{"bl"} = sqrt("d"_{"s"}^2+4*"d"_{"s"}*"h"_{"shl"}-0.5*"r"_{"cn"})`

Example

`"84.18135mm"=sqrt(("80mm")^2+4*"80mm"*"2.15mm"-0.5*"0.003001mm")`

Calculator

LaTeX

Reset

👍

Download Sheet Metal Operations Formulas PDF PDF Image

Blank Size when there is Corner Radius on Punch Solution

STEP 0: Pre-Calculation Summary

Formula Used

Blank Diameter = sqrt(Outer Diameter of Shell^2+4*Outer Diameter of Shell*Shell Height-0.5*Corner Radius on Punch)
d_bl = sqrt(d_s^2+4*d_s*h_shl-0.5*r_cn)
This formula uses 1 Functions, 4 Variables

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Blank Diameter - (Measured in Meter) - Blank Diameter refers to the initial diameter of the material before any forming or shaping process is applied.
Outer Diameter of Shell - (Measured in Meter) - Outer Diameter of Shell is the measurement across the widest part of any cylindrical object.
Shell Height - (Measured in Meter) - Shell Height is the longitudinal length measured along its axis.
Corner Radius on Punch - (Measured in Meter) - Corner Radius on Punch is that radius or rounded edge or curvature present on the punch used in a manufacturing process.

STEP 1: Convert Input(s) to Base Unit

Outer Diameter of Shell: 80 Millimeter --> 0.08 Meter (Check conversion here)
Shell Height: 2.15 Millimeter --> 0.00215 Meter (Check conversion here)
Corner Radius on Punch: 0.003001 Millimeter --> 3.001E-06 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

d_bl = sqrt(d_s^2+4*d_s*h_shl-0.5*r_cn) --> sqrt(0.08^2+4*0.08*0.00215-0.5*3.001E-06)

Evaluating ... ...

d_bl = 0.0841813488844174

STEP 3: Convert Result to Output's Unit

0.0841813488844174 Meter -->84.1813488844174 Millimeter (Check conversion here)

FINAL ANSWER

84.1813488844174 ≈ 84.18135 Millimeter <-- Blank Diameter

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Production Engineering » Sheet Metal Operations » Punch Operation » Blank Size when there is Corner Radius on Punch

Credits

Created by Rajat Vishwakarma

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

Rajat Vishwakarma has created this Calculator and 400+ more calculators!

Verified by Kethavath Srinath

Osmania University (OU), Hyderabad

Kethavath Srinath has verified this Calculator and 1200+ more calculators!

< 8 Punch Operation Calculators

Punching Force for Holes Smaller than Sheet Thickness

Go Punching Force or Load = (Punch or Ram Diameter*Sheet Thickness*Tensile Strength)/(Punch or Ram Diameter/Sheet Thickness)^(1/3)

Blank Size when there is Corner Radius on Punch

Go Blank Diameter = sqrt(Outer Diameter of Shell^2+4*Outer Diameter of Shell*Shell Height-0.5*Corner Radius on Punch)

Maximum Shear Force given Shear Applied to Punch or Die

Go Maximum Shear Force = Cutting Perimeter*Thickness of Stock*(Thickness of Stock*Punch Penetration)/Shear on Punch

Shear on Punch or Die

Go Shear on Punch = Cutting Perimeter*Thickness of Stock*(Thickness of Stock*Punch Penetration)/Maximum Shear Force

Stock Thickness when Shear used on Punch

Go Thickness of Stock = sqrt((Maximum Shear Force*Shear on Punch)/(Cutting Perimeter*Punch Penetration))

Perimeter of Cut when Shear is Applied

Go Cutting Perimeter = (Maximum Shear Force*Shear on Punch)/(Punch Penetration*Thickness of Stock^2)

Penetration of Punch as Fraction

Go Punch Penetration = (Maximum Shear Force*Shear on Punch)/(Cutting Perimeter*Thickness of Stock^2)

Punch Load

Go Punch Load = Cutting Perimeter*Bar Thickness*Strength Coefficient

Blank Size when there is Corner Radius on Punch Formula

Blank Diameter = sqrt(Outer Diameter of Shell^2+4*Outer Diameter of Shell*Shell Height-0.5*Corner Radius on Punch)
d_bl = sqrt(d_s^2+4*d_s*h_shl-0.5*r_cn)

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?

Blank Size when there is Corner Radius on Punch calculator uses Blank Diameter = sqrt(Outer Diameter of Shell^2+4*Outer Diameter of Shell*Shell Height-0.5*Corner Radius on Punch) to calculate the Blank Diameter, Blank Size when there is Corner Radius on Punch given the stripper force, is the diameter of the blank needed for the sheet metal operation considering the punch corner radius. Blank Diameter is denoted by d_bl symbol.

How to calculate Blank Size when there is Corner Radius on Punch using this online calculator? To use this online calculator for Blank Size when there is Corner Radius on Punch, enter Outer Diameter of Shell (d_s), Shell Height (h_shl) & Corner Radius on Punch (r_cn) and hit the calculate button. Here is how the Blank Size when there is Corner Radius on Punch calculation can be explained with given input values -> 84200.35 = sqrt(0.08^2+4*0.08*0.00215-0.5*3.001E-06).

FAQ

What is Blank Size when there is Corner Radius on Punch?

Blank Size when there is Corner Radius on Punch given the stripper force, is the diameter of the blank needed for the sheet metal operation considering the punch corner radius and is represented as d_bl = sqrt(d_s^2+4*d_s*h_shl-0.5*r_cn) or Blank Diameter = sqrt(Outer Diameter of Shell^2+4*Outer Diameter of Shell*Shell Height-0.5*Corner Radius on Punch). Outer Diameter of Shell is the measurement across the widest part of any cylindrical object, Shell Height is the longitudinal length measured along its axis & Corner Radius on Punch is that radius or rounded edge or curvature present on the punch used in a manufacturing process.

How to calculate Blank Size when there is Corner Radius on Punch?

Blank Size when there is Corner Radius on Punch given the stripper force, is the diameter of the blank needed for the sheet metal operation considering the punch corner radius is calculated using Blank Diameter = sqrt(Outer Diameter of Shell^2+4*Outer Diameter of Shell*Shell Height-0.5*Corner Radius on Punch). To calculate Blank Size when there is Corner Radius on Punch, you need Outer Diameter of Shell (d_s), Shell Height (h_shl) & Corner Radius on Punch (r_cn). With our tool, you need to enter the respective value for Outer Diameter of Shell, Shell Height & Corner Radius on Punch and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search