VTube Overbend Calculations for Springback

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Embedded Overbend Calculator

The Overbend Calculator is embedded in VTube-STEP and VTube-LASER because the fixed and proportional springback values are included in the Part Setup menu - and have an effect the final bend angles when sending new data to the bender, and when making corrections to the bender.

Vtube-step-1.90-screen-with-overbendcalculator.png

Steps to Calculate Overbend

To access the calculator inside VTube, follow these steps:

STEP 1: Right click anywhere in the white column in the Part Setup menu.

Vtube-partsetup-contextmenu.png

STEP 2: Choose "Show Overbend Calculator" in the context menu (the popup menu).

STEP 3: Make a part with two test bends. Typically they are 20 and 120 degrees. The bender is set to bend these angles and a test tube is bent.

Vtube-overbendcalculator-page1.png

STEP 4: The actual resulting bend angles are measured and entered into the overbend calculator.

Vtube-overbendcalculator-page2.png

STEP 5: Formula constant values are calculated and used in a springback formula to predict overbend to overcome springback at any angle.

Vtube-overbendcalculator-page3.png

STEP 6: Press the "Save to Part Setup" button. The values will now be displayed at the bottom of the Part Setup menu.

Vtube-1.90-partsetup-springback.png

These two calculated values will be used to calculate overbend to overcome springback when sending data to the bender. This image shows a button inside the Bender Setup menu in VTube-LASER.

Vtube-laser-1.90-bendsetup-sendSVwithspringback.png


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