Difference between revisions of "How to Reverse Engineer with Split Bend"

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(→‎STEP 6: Choose Build Measured Tube Data Only)
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# Press the Laser tab if it is not active.<br><br>
 
# Press the Laser tab if it is not active.<br><br>
 
# Activate the LASER scanner for Split Bends.<br><br>
 
# Activate the LASER scanner for Split Bends.<br><br>
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# Set the number of allowed STRIPES to 250 for Split Bends.<br><br>
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# Set the number of allowed STRIPES to 50 for Split Bends.<br><br>
 
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# Press the Separation Filter tab.<br><br>
 
# Press the Separation Filter tab.<br><br>
 
# Set the SPLIT BEND Scan Type to DISTANCE.<br><br>
 
# Set the SPLIT BEND Scan Type to DISTANCE.<br><br>
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# Set the SPLIT BEND Scan Distance to 0.039" (or 1 mm). <br><br>
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# Set the SPLIT BEND Scan Distance to 0.015" (or .38 mm). <br><br>
 
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'''If you want to see a Split Bend measurement then see video 40 in [[VTube-LASER_Videos]].'''<br><br>
 
'''If you want to see a Split Bend measurement then see video 40 in [[VTube-LASER_Videos]].'''<br><br>
 
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Press FINISH and APPLY Measure when the measurement is completed.
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Press FINISH and Build Measured Tube when the measurement is completed.
 
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FINISH and Build Measured Tube and press okay when the next popup screen appears. This is asking users to verify they want to make the tube they just measured the new MASTER tube going forward. <br><br>
 
FINISH and Build Measured Tube and press okay when the next popup screen appears. This is asking users to verify they want to make the tube they just measured the new MASTER tube going forward. <br><br>
  
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The new measured tube will appear as a blue tube like this.
 
 
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Latest revision as of 19:58, 16 December 2022

Vtube-laser logo 1.96.png

Vtl screen hd scanner without logo.png


How to Reverse Engineer a Part Using Split Bend

The Split Bend feature allows you to accurately measure bends that equal or exceed 180 degrees.

Split Bend setup is controlled in the Bend Setup tab of the Master Tube menu in VTube-LASER, and in the Bend Setup tab in VTube-STEP. Both modes of VTube allow you to configure Split Bends.

To turn a Split Bend ON for a straight section, you enter the Split Bend window and select the straights that should be treated as Split Bends.

Vtube-laser v2.2 master with splitbend.png

STEP 1: Enter PART SETUP Data

Enter the Part Setup data for the new part. Especially enter the PART NUMBER and DEFAULT RADIUS. (You can measure the radius if necessary in Measure Process.)

Vtube-laser v2.2 default radius.png

STEP 2: Populate the MASTER TUBE DATA Grid

Since the Split Bend feature creates a grid based on the number of straights in the MASTER data, it is important to set the number of points that you will be measuring in the reversed tube.

Enter the MASTER TUBE menu, set the point count (which is two more than bend count), and press the SET button. The XYZ values will be filled with zeros like this:

The radius values were automatically filled with the DEFAULT RADIUS value from the PART SETUP menu.

Vtube-laser v4 set master point count.png

STEP 3: Configure the Split Bend Window

The Split Bend window is on the Bend Setup tab in the MASTER TUBE menu. Click into that window.

Vtube-laser v4 enter split bend window.png

In the Split Bend window, set any straight that will be treated as a Split Bend.

Close the window. VTube will now understand which straight to treat as a Split Bend during measuring.

Vtube-laser v4 split bend window straight selected1.png

STEP 4: Configure the Measure Setup

Configure Measure Setup like this:

  1. Press the Measure Setup button in the Navigation pane.

  2. Press the Laser tab if it is not active.

  3. Activate the LASER scanner for Split Bends.

  4. Set the number of allowed STRIPES to 50 for Split Bends.

Vtube-laser v4 lasersetup splitbends.png

Continue with the Measure Setup in the Separation Filter menu

  1. Press the Separation Filter tab.

  2. Set the SPLIT BEND Scan Type to DISTANCE.

  3. Set the SPLIT BEND Scan Distance to 0.015" (or .38 mm).

Vtube-laser v4 separationsetup splitbend.png.png

STEP 5: Measure The Part

This step is identical to regular reverse-engineering measuring.

When you arrive at the split bend to scan, VTube-LASER will make a special sound and tell you to scan the OUTSIDE of the bend. Scan as much data as you want - up to 250 stripes. The goal is to be sure that at least one point in one of the stripes touches the highest point of the outside of the bend. So you can take as many stripes of data as you want - VTube will take them all in without a problem.

During scanning, release the green button, and look at the screen. You should see a large area of surfaces that pass the point of the outside of the bend. Press the RED button if you are finished scanning the outside and have not come to 250 stripes.

Now scan the center of the inside. Be sure that at least one point in one stripe passes the center inside of the bend. If you are not sure, then release the green button and look at the screen to see if you have points and surfaces that appear to be in the right place. If you know you've scanned the center, then press the RED button to move on to the next straight.

If you want to see a Split Bend measurement then see video 40 in VTube-LASER_Videos.

Vtube-laser v2.2-splitbendvideo40.png

Press FINISH and Build Measured Tube when the measurement is completed.

Vtube-laser-v4 measureguide cylindricaltube.png



STEP 6: Choose Build Measured Tube Data Only

FINISH and Build Measured Tube and press okay when the next popup screen appears. This is asking users to verify they want to make the tube they just measured the new MASTER tube going forward.


Vtube-laser v4 copy.png

Vtube-laser v4 master.png

STEP 7: Copy Measured to Master

Copy Measured to Master Data in the Data Handling menu. This will overwrite the MASTER data ZEROS with the MEASURED tube data.

When you press this button, the MEASURED data will be copied to the MASTER data menu and the MASTER data menu will display automatically.

Vtube-laser v4 copy measured to master1.png

STEP 8: Optional Reset Origin to Zero

Some customers prefer to translate the new MASTER data so that the first point is at 0,0,0.

Vtube-laser v4 reset origin to zero.png

STEP 9: View the New Master Tube

View the new MASTER tube by switching the display of the Master tube on, then redrawing and zooming all.

In this case, the MASTER tube is translated in space from the measured tube because the coordinates were zeroed in the previous step.

Vtube-laser v2.2-copy to master from measured redraw.png

STEP 10: Optional Alignment Test

This is a cross-check to be sure the process was performed properly. Enter the Inspection Results menu, and press Recalculate for the alignment.

Since VTube is aligning a part to itself, the deviations should be exactly zero.

Vtube-laser v2.2-recalculate alignment perfect match 180.png

STEP 11: Save the VTube Project

Press the Project Save button in the Toolbar, choose the project save path and filename, and save the VTube Project file.

Vtube-laser v4-SaveProjects.png

Other Pages
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