Difference between revisions of "VTube End Length Offsets"

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* [[What are Centerline Tangent Points and Why Are They Important in VTube-LASER?]]
 
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* About [[VTube Intersection Point Tolerances]]
 
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Latest revision as of 20:03, 10 January 2017

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What Are End Length Adjustments?

Customers often need a way to adjust the material length on the end of the tube without changing the end point location.

This is possible with the A End Length Adjustment and B End Length Adjustment values in Part Setup in both VTube-STEP and VTube-LASER.

Here are some facts about end length adjustments in VTube:

  1. Use end length adjustments to adjust the material length of the tube without moving the actual end point.

  2. Use this to add material for end forms and other operations that require extra material.

  3. These offsets will be added into the calculated Cut Length in the Part Setup menu.

  4. These offsets are displayed in the model on the screen.

  5. These offsets are displayed in the Length data in the LRA bender charts.

  6. The offsets have an immediate real-time effect on all parts of VTube.

Vtube-endlength offsets comparison.png

Vtube-endlength offsets in lra.png

End Length Offsets Add or Subtract Material Length

The end offsets in the Part Setup menu add or subtract material the ends in real-time.

This is the starting tube with no A End or B End offsets.

Vtube-offsetdemo nooffset.png

Entering a Positive Length Offset in the Part Setup Menu

We can change the B End Offset in the Part Setup menu like this:

Vtube-offsetdemo offset b end 3inches.png

Then we press F2 to refresh the graphics, and B end is made longer - without moving the end point.

Vtube-offsetdemo offset b end 3inches model1.png

Using Transparency to Show the Effect

Here is the result with transparency increased to 0.75.

With the transparency it's easy to see that the end point never moved.

Vtube-offsetdemo offset b end 3inches model2.png

Entering a Negative Length Offset in the Part Setup Menu

You can also subtract material from an end by using a negative value like this:

Vtube-offsetdemo offset b end minus2inches.png

Then press F2 to refresh the graphics, and B end material is made shorter without moving the end point.

Vtube-offsetdemo offset b end 3inches model3.png

Length Offsets Change the Calculated Cut Lengths

The Cut Length in VTube is a static value that can be calculated using a popup menu in the Part Setup grid.

During calculation, it will take into account the End Length Offsets to calculate a cut length.

  • The first grid shows an offset of zero.
  • The second grid shows a B End Length offset of +3.
  • See how the offset of 3 is added into the cut length when you recalculate the cut length.

Vtube-endlength-calc cut length compare.png



Other Pages

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