Difference between revisions of "VTube-LASER Split Bend Feature"

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[[image:vtube-laser_logo_1.96.png|200px]]
 
[[image:vtube-laser_logo_1.96.png|200px]]
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<br><br>
 
* Back to [[VTube-LASER]]
 
* Back to [[VTube-LASER]]
 +
* Back to [[VTube-LASER v2.9.11]] Update Information
 +
* Back to [[VTube-STEP v2.9.11]] Update Information
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__NOTOC__
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__TOC__
  
== The Split Bend Feature ==
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<table cellpadding=10 width="900">
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<table>
<tr valign=top>
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<tr>
<td width=500 >
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<td>
The Split Bend feature is VTube-LASER's unique method of measuring tubes with 180-degree bends or greater with accuracy.
+
[[image:LightBulb Over Hand.png|100px]]
<br><br>
+
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.<br><br>
+
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.<br><br>
+
 
</td>
 
</td>
 
<td>
 
<td>
[[image:vtube-laser_v2.2_master_with_splitbend.png|500px]]
+
We invented this feature in 2011.
 
</td>
 
</td>
 
</tr>
 
</tr>
</table>
+
<tr>
 
+
<td>
== Why Is Split Bend Necessary? ==
+
[[image:winner stand numbers.png|100px]]
<table cellpadding=10 width="900">
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<tr valign=top>
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<td width=500 >
+
Split Bend was invented to solve an old measuring issue in the tube fabrication.
+
<br><br>
+
When bend angles reach and exceed 180-degrees, we lose the intersection point between the two adjacent straights<br><br>
+
See the illustration to see why this is the case.<br><br>
+
 
</td>
 
</td>
 
<td>
 
<td>
[[image:Split Bend Progression Image.png|400px]]
+
To the best our knowledge, no other tube measuring system uses this feature.
 
</td>
 
</td>
 
</tr>
 
</tr>
 
</table>
 
</table>
  
==STEP 1: Enter PART SETUP Data==
+
== About The Split Bend Measuring Feature ==
 
<table cellpadding=10 width="900">
 
<table cellpadding=10 width="900">
 
<tr valign=top>
 
<tr valign=top>
<td width=400 >
+
<td width=500 >
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.)
+
The Split Bend Measuring feature is VTube-LASER's unique method of measuring tubes with 180-degree or greater bends with accuracy.
 +
<br><br>
 +
 
 
</td>
 
</td>
<td width=400 >
+
<td>
[[image:vtube-laser_v2.2_default_radius.png|500px]]
+
[[image:vtube-laser_v2.2_master_with_splitbend.png|500px]]
 
</td>
 
</td>
 
</tr>
 
</tr>
 
</table>
 
</table>
  
==STEP 2: Populate the MASTER TUBE DATA Grid==
+
== Why Is Split Bend Measuring Necessary? ==
 
<table cellpadding=10 width="900">
 
<table cellpadding=10 width="900">
 
<tr valign=top>
 
<tr valign=top>
<td width=400 >
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<td width=300 >
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.<br><br>
+
We invented Split Bend to solve a legacy measuring issue in the tube fabrication.
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:<br><br>
+
<br><br>
The radius values were automatically filled with the DEFAULT RADIUS value from the PART SETUP menu.
+
When bend angles reach and exceed 180-degrees, we lose the intersection point between the two adjacent straights. VTube must insert an extra straight inside the bend in order to solve the centerline math.<br><br>
 +
See the difference between the tubes with the red circles versus the tubes with the blue circles in the illustration. When the bends reach 180 degrees, then each of those bends are given two intersection points.<br><br>
 +
At 180-degrees or more, then VTube-LASER must form the single bend '''with two intersection points.'''<br><br>
 +
If any bend has the potential to reach and pass 180 degrees in a bender, then VTube-LASER should be setup to use the SPLIT BEND method to measure and solve for the centerline formed between the two intersection points in the 180-degree (or greater) bend.
 
</td>
 
</td>
<td width=400 >
+
<td>
[[image:vtube-laser_v2.2_set_master_point_count.png|500px]]
+
[[image:Split Bend Progression Image.png|400px]]
 
</td>
 
</td>
 
</tr>
 
</tr>
 
</table>
 
</table>
  
 
+
==Configuring for Split Bend Measuring==
==STEP 3: Configure the Split Bend Window==
+
 
<table cellpadding=10 width="900">
 
<table cellpadding=10 width="900">
 
<tr valign=top>
 
<tr valign=top>
 
<td width=400 >
 
<td width=400 >
 +
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.<br><br>
 +
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.<br><br>
 
The Split Bend window is on the Bend Setup tab in the MASTER TUBE menu.  Click into that window.
 
The Split Bend window is on the Bend Setup tab in the MASTER TUBE menu.  Click into that window.
 
</td>
 
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<td width=400 >
 
<td width=400 >
 
In the Split Bend window, set any straight that will be treated as a Split Bend.<br><br>
 
In the Split Bend window, set any straight that will be treated as a Split Bend.<br><br>
Close the window.  VTube will now understand which straight to treat as a Split Bend during measuring.
+
Close the window.  VTube will now understand which straight to treat as a Split Bend during measuring.<br><br>
</td>
+
 
 +
[http://www.advancedtubular.wiki/index.php/VTube-LASER_Videos#Video_56:_How_to_Manually_Setup_for_Measuring_Split_Bends_from_Traditional_Part_Data_.28180-Degree_Bends.29 See Video 54] for how to setup for a Split Bend.<br><br>
 
<td width=400 >
 
<td width=400 >
 
[[image:vtube-laser_v2.2_split_bend_window_straight_selected.png|500px]]
 
[[image:vtube-laser_v2.2_split_bend_window_straight_selected.png|500px]]
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</table>
 
</table>
  
 
+
==Split Bend LRA Compression==
 
+
==STEP 4: Configure the Measure Setup==
+
 
<table cellpadding=10 width="900">
 
<table cellpadding=10 width="900">
 
<tr valign=top>
 
<tr valign=top>
<td width=400 >
+
<td width=300>
Configure Measure Setup like this:<br><br>
+
VTube-LASER knows that benders still like to refer to the 180-degree bends as a SINGLE bend.<br><br>
# Press the Measure Setup button in the Navigation pane.<br><br>
+
To do handle this, it automatically compresses the LRA data when you turn the SPLIT BEND feature on for any bend.<br><br>
# Press the Laser tab if it is not active.<br><br>
+
See the starting data in the LRA grid on the right (before Split Bend is turned on).<br><br>
# Activate the LASER scanner for Split Bends.<br><br>
+
[[image:split bend model - 90-degree bends.png|400px]]
# Set the number of allowed STRIPES to 250 for Split Bends.<br><br>
+
 
</td>
 
</td>
 
<td width=400 >
 
<td width=400 >
[[image:vtube-laser_v2.2_lasersetup_splitbend.png|500px]]<br>
+
[[image:split bend original data.png|400px]]<br>
 
</td>
 
</td>
 
</tr>
 
</tr>
 
<tr valign=top>
 
<tr valign=top>
<td width=400 >
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<td width=200 >
Continue with the Measure Setup in the Separation Filter menu<br><br>
+
For this tube, we turn the Split Bend ON for straights 2 and 4, and the LRA data automatically compresses.<br><br>
# Press the Separation Filter tab.<br><br>
+
[[image:split bend setup grid.png|400px]]<br><br>
# Set the SPLIT BEND Scan Type to DISTANCE.<br><br>
+
Both LRA grids in these images represent the same part.<br><br>
# Set the SPLIT BEND Scan Distance to 0.039" (or 1 mm). <br><br>
+
The LRA grid on the bottom shows four 90-degree bends compressed into two 180-degree bends because Split Bend is turned on for straights 2 and 4.
 
</td>
 
</td>
 
<td width=400 >
 
<td width=400 >
[[image:vtube-laser_v2.2_separationsetup_splitbend.png.png|500px]]
+
[[image:split bend compressed lra data.png|400px]]
 
</td>
 
</td>
 
</tr>
 
</tr>
 
</table>
 
</table>
  
==STEP 5: Measure The Part==
+
==What Happens During Split Bend Measuring==
 
<table cellpadding=10 width="900">
 
<table cellpadding=10 width="900">
 
<tr valign=top>
 
<tr valign=top>
 
<td width=400 >
 
<td width=400 >
This step is identical to regular reverse-engineering measuring.<br><br>
+
During tube measurement, 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 (250 is the default maximum stripe count value).  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.<br><br>
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.<br><br>
+
 
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.<br><br>
 
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.<br><br>
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.<br><br>
+
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 across the center, then press the RED button to move on to the next straight.<br><br>
'''If you want to see a Split Bend measurement then see video 40 in [[VTube-LASER_Videos]].'''<br><br>
+
[[image:vtube-laser_v2.2-splitbendvideo40.png|400px|link=VTube-LASER Videos]]<br><br>
+
Press FINISH and APPLY Measure when the measurement is completed.
+
</td>
+
<td width=400 >
+
[[image:vtube-laser-v2.2_measureguide_cylindricaltube.png]]<br>
+
</td>
+
</tr>
+
</table>
+
  
<br><br>
+
* [http://www.advancedtubular.wiki/index.php/VTube-LASER_Videos#Video_40:_Sixty_Second_SPLIT_BEND_Feature_Demo See Video 40] for how to measure a Split Bend.<br><br>
  
==STEP 6: Choose Build Measured Tube Data Only==
+
[[image:split bend measure outside video.png|300px]]
<table cellpadding=10 width="900">
+
<tr valign=top>
+
<td width=400 >
+
Because the MASTER data row count is greater than zero, the Measurement Complete window will offer to allow you to ALIGN the measured tube.<br><br>
+
However, do NOT align at this point - because there are only ZEROS in the MASTER Data fields.<br><br>
+
Rather - press the '''Build Measured Tube''' button.
+
 
</td>
 
</td>
 
<td width=400 >
 
<td width=400 >
[[image:vtube-laser-v2.2_Build_MeasuredTueDataOnly.png|500px]]<br>
+
[[image:vtube-laser-v2.2_measureguide_cylindricaltube.png]]<br><br>
</td>
+
[[image:vtube-splitbend_construction_geometry.png|500px]].
</tr>
+
<tr valign=top>
+
<td width=400 >
+
The new measured tube will appear as a blue tube like this.
+
</td>
+
<td width=400 >
+
[[image:vtube-laser-v2.2_MeasuredTubeSplitBend.png|500px]]<br>
+
 
</td>
 
</td>
 
</tr>
 
</tr>
 
</table>
 
</table>
  
==STEP 7: Copy Measured to Master==
+
<br><br>
<table cellpadding=10 width="900">
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<tr valign=top>
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<td width=400 >
+
Copy Measured to Master Data in the Data Handling menu.  This will overwrite the MASTER data ZEROS with the MEASURED tube data. <br><br>
+
When you press this button, the MEASURED data will be copied to the MASTER data menu and the MASTER data menu will display automatically.
+
</td>
+
<td width=400 >
+
[[image:vtube-laser_v2.2_copy_measured_to_master.png|500px]]<br>
+
</td>
+
</tr>
+
</table>
+
 
+
==STEP 8: Optional Reset Origin to Zero==
+
<table cellpadding=10 width="900">
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<tr valign=top>
+
<td width=400 >
+
Some customers prefer to translate the new MASTER data so that the first point is at 0,0,0.
+
</td>
+
<td width=400 >
+
[[image:vtube-laser_v2.2_reset_origin_to_zero.png|500px]]<br>
+
</td>
+
</tr>
+
</table>
+
 
+
==STEP 9: View the New Master Tube==
+
<table cellpadding=10 width="900">
+
<tr valign=top>
+
<td width=400 >
+
View the new MASTER tube by switching the display of the Master tube on, then redrawing and zooming all.<br><br>
+
In this case, the MASTER tube is translated in space from the measured tube because the coordinates were zeroed in the previous step.
+
</td>
+
<td width=400 >
+
[[image:vtube-laser_v2.2-copy_to_master_from_measured_redraw.png|500px]]<br>
+
</td>
+
</tr>
+
</table>
+
 
+
==STEP 10: Optional Alignment Test==
+
<table cellpadding=10 width="900">
+
<tr valign=top>
+
<td width=400 >
+
This is a cross-check to be sure the process was performed properly.  Enter the Inspection Results menu, and press Recalculate for the alignment.<br><br>
+
Since VTube is aligning a part to itself, the deviations should be exactly zero.
+
</td>
+
<td width=400 >
+
[[image:vtube-laser_v2.2-recalculate_alignment_perfect_match_180.png|500px]]<br>
+
</td>
+
</tr>
+
</table>
+
 
+
==STEP 11: Save the VTube Project==
+
<table cellpadding=10 width="900">
+
<tr valign=top>
+
<td width=400 >
+
Press the Project Save button in the Toolbar, choose the project save path and filename, and save the VTube Project file.
+
</td>
+
<td width=400 >
+
[[image:vtube-laser_v2.2-SaveProject.png|500px]]<br>
+
</td>
+
</tr>
+
</table>
+
  
 
==Other Pages==
 
==Other Pages==
 
* Back to [[VTube-LASER]]
 
* Back to [[VTube-LASER]]
* See also [[Calibration-Leapfrog-Move Targets]]
+
* Back to [[VTube-LASER v2.9.11]] Update Information
* Purchase the targets at the [http://www.advancedtubularstore.com/category-s/1836.htm store].
+
* Back to [[VTube-STEP v2.9.11]] Update Information

Latest revision as of 04:21, 17 August 2018

Vtube-laser logo 1.96.png



Vtl screen hd scanner without logo.png

Contents


LightBulb Over Hand.png

We invented this feature in 2011.

Winner stand numbers.png

To the best our knowledge, no other tube measuring system uses this feature.

About The Split Bend Measuring Feature

The Split Bend Measuring feature is VTube-LASER's unique method of measuring tubes with 180-degree or greater bends with accuracy.

Vtube-laser v2.2 master with splitbend.png

Why Is Split Bend Measuring Necessary?

We invented Split Bend to solve a legacy measuring issue in the tube fabrication.

When bend angles reach and exceed 180-degrees, we lose the intersection point between the two adjacent straights. VTube must insert an extra straight inside the bend in order to solve the centerline math.

See the difference between the tubes with the red circles versus the tubes with the blue circles in the illustration. When the bends reach 180 degrees, then each of those bends are given two intersection points.

At 180-degrees or more, then VTube-LASER must form the single bend with two intersection points.

If any bend has the potential to reach and pass 180 degrees in a bender, then VTube-LASER should be setup to use the SPLIT BEND method to measure and solve for the centerline formed between the two intersection points in the 180-degree (or greater) bend.

Split Bend Progression Image.png

Configuring for Split Bend Measuring

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.

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

Vtube-laser v2.2 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.

See Video 54 for how to setup for a Split Bend.

Vtube-laser v2.2 split bend window straight selected.png

Split Bend LRA Compression

VTube-LASER knows that benders still like to refer to the 180-degree bends as a SINGLE bend.

To do handle this, it automatically compresses the LRA data when you turn the SPLIT BEND feature on for any bend.

See the starting data in the LRA grid on the right (before Split Bend is turned on).

Split bend model - 90-degree bends.png

Split bend original data.png

For this tube, we turn the Split Bend ON for straights 2 and 4, and the LRA data automatically compresses.

Split bend setup grid.png

Both LRA grids in these images represent the same part.

The LRA grid on the bottom shows four 90-degree bends compressed into two 180-degree bends because Split Bend is turned on for straights 2 and 4.

Split bend compressed lra data.png

What Happens During Split Bend Measuring

During tube measurement, 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 (250 is the default maximum stripe count value). 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 across the center, then press the RED button to move on to the next straight.

Split bend measure outside video.png

Vtube-laser-v2.2 measureguide cylindricaltube.png

Vtube-splitbend construction geometry.png.



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