VTube Overbend Calculations for Springback

About Overbend Calculator

The Overbend Calculator is a built-in feature in VTube-STEP and VTube-LASER that can calculate the fixed and proportional springback values to be included in the Part Setup menu or the Springback Table. These values have an effect the final bend angles when sending new data to the bender, and when making corrections to the bender.

Steps to Calculate Springback Values

STEP 1 Right click anywhere in the Part Setup menu and click on Overbend Calculator in the popup menu.
STEP 2 Set the bender to bend a two bend part. Typically the angles are 20 and 120 degrees. Enter the actual bend values used in the bender in this tab menu.
STEP 3 The actual resulting bend angles are measured and entered into the Overbend Calculator. If you're using VTube-LASER connected to a FARO measuring center, then you can create a part with the bend angles in the Bender Setup tab (the previous tab menu), then measure a test part, then copy the measured angles into the Overbend calculator.
STEP 4 The proportional and fixed values are calculated and used in a springback formula to overcome springback at any angle by calculating the overbend angles. Press the Calculate button to calculate the values. After you calculate the values, you can choose one of these actions... Save the values to Part Setup and close the window. Add the values to the end of the Springback table and close the window. Do both and close the window. Or just Cancel and close the window.

Where the Values are Stored in VTube

Part Setup The springback values are applied to the current project by storing the values in the Part Setup menu.
Springback Table The springback values can also be stored in the Springback Table so that you can reuse the values in other projects.

Using Springback Values in VTube-STEP to Change the Bender Setup

METHOD 1: SUPRAVISION NETWORK PROTOCOL These two calculated values will be used to automatically calculate overbend to overcome springback when sending data to the bender in the BEND OUTPUT Automated Supravision Link protocol menu in VTube-STEP.
METHOD 2: EXPORTING TO A BENDER FILE These two calculated values will be used to automatically calculate overbend to overcome springback when saving data to a bender file in the IMPORT/EXPORT menu.

Using Springback Values in VTube-STEP Reports

These two calculated values can be used to report bender with springback compensation. The springback values are used to adjust the length between bends and bend angles.

Using Springback Values in VTube-LASER to Change the Bender Setup

The VTube-LASER license level uses the FARO measuring center to measure and qualify a tube shape, then correct tube benders. The springback values can be used to automatically calculate overbend to overcome springback when sending setup data to the bender in the BEND SETUP page in VTube-LASER. This image shows the AUTO SEND button inside the Bender Setup menu in VTube-LASER.

Other Pages

• Back to VTube-STEP
• Back to VTube-LASER