Difference between revisions of "How To Calculate Cut Lengths in VTube"

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(→‎Calculating Cut Length in the Part Setup Menu)
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== XYZ Intersection Deviations ==
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== How to Remove Elongation From the Cut Length ==
  
 
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The XYZ intersection tolerances are based on the XYZ deviations as shown in the model in this screen image.<br><br>
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VTube also uses the Tube Elongation Percentage value to remove anticipated elongation.<br><br>
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In this case, most of the error is in the Y axis.  It can be verified by seeing that the intersection point of the derived data is visually above the master point.  (You can click on the image to make it larger.) The deviation data indicates that it is exactly 0.012" above the master point in the Y axis.<br><br>
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The value is usually a positive value.  The more positive the value the more elongation is removed from the cut length.  A typical value is between 3 and 5 (percent).<br><br>
 
The reason the grid is entirely green is because the tolerance values are higher than the deviation values (in this case the tolerances are 0.039").<br><br>
 
The reason the grid is entirely green is because the tolerance values are higher than the deviation values (in this case the tolerances are 0.039").<br><br>
 
Note:  The 0.013" value is the 3D deviation from point to point.  Unless it lays on an X, Y, or Z axis, it is usually slightly larger than any of the other values.
 
Note:  The 0.013" value is the 3D deviation from point to point.  Unless it lays on an X, Y, or Z axis, it is usually slightly larger than any of the other values.

Revision as of 19:19, 22 September 2014

Vtube-laser logo.jpg XYZ Intersection Tolerances

Vtube-laser 1.77.3.jpg


Calculating Cut Length in the Part Setup Menu

You can calculate the cut length of the tube in the Part Setup menu in either STEP or LASER modes.

To calculate the cut length, right click on the Part Setup menu, and choose "Calculate Cut Length".

Vtube-1.94 partsetup popupmenu alone.png

Vtube-1.94 partsetup popupmenu.png

How to Remove Elongation From the Cut Length



VTube also uses the Tube Elongation Percentage value to remove anticipated elongation.

The value is usually a positive value. The more positive the value the more elongation is removed from the cut length. A typical value is between 3 and 5 (percent).

The reason the grid is entirely green is because the tolerance values are higher than the deviation values (in this case the tolerances are 0.039").

Note: The 0.013" value is the 3D deviation from point to point. Unless it lays on an X, Y, or Z axis, it is usually slightly larger than any of the other values.

Vtube-laser-1.94 closeup xyz intersection model.png

Set the Tolerances in Inspection Data Menu

You can set these tolerances in two places in VTube-LASER. The first place is in the Inspection Data menu.

Click on the Change Grid Setup button until you see the tolerances in the grid like we show in the image on the right.

Then select and change any tolerance value. The grid will allow you to edit only the tolerances.

Vtube-laser inspectionresults overall xyz intersection with tolerances.png

Or Set the Tolerances in Expanded Windows

The second place to edit the value is in the VTube-LASER Expanded Window.

Click on the Expanded Window button to display the Expanded Window, and then make changes to the tolerances there.

The benefit of the Expanded Window is that you can view all the tolerances at the same time.

Vtube-laser-1.91-expanded xyz intersection deviation edit tolerance.png

Vtube-laser-1.91-expanded-xyz deviation grid.png
(You can click on the image to see it larger.)

Setting All The Tolerances At The Same Time

The intersection deviation grids allow you to set the default tolerance to every value in a row, column, or even the entire grid using a popup menu

To use this feature, single click on a tolerance value, then right click and choose the action in the popup menu.

Vtube-laser-1.93 popup intersection closeup.png

Vtube-laser intersectiondevation tolerances popup.png

The screen images on the right show an example of before and after changes made to an entire column:

Before Vtube-laser-1.93 popup intersection closeup beforechange.png

After Vtube-laser-1.93 popup intersection closeup afterchange.png

XYZ Intersection +/- Tolerance Values in Printed Reports

The XYZ Intersection deviation values can be included in reports:

  1. plus tolerance values
  2. minus tolerance values
  3. out of tolerance values

Vtube-laser-1.91-report xyz intersection deviation output full.png

The first Inspection Report in the reports menu is good for showing this data.

Vtube-laser-1.91-report xyz intersection deviation output.png

Other Pages

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