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mdamplo1-Visitor
1-Visitor
August 13, 2015
Solved

Twisted wire not being displayed properly in drawing

  • August 13, 2015
  • 4 replies
  • 4054 views

Hi all

I'm currently having an issue with drawings of assemblies that contain twisted wires (which I'll be making a lot of)

The wires display perfectly fine with a Shaded display, but when I change the display style to "No hidden", I get a lot of extra messy lines that should not be visible. The tangent edges setting and all other "View Display" settings do not have any impact on this. I can't seem to get a clean line drawing of these twists! I know that rendering issues like this happen with interfering parts in assemblies, but the wires are separate and there is no interference.

A picture is attached of the same wires in "Shading" mode and "No hidden" mode.

Any ideas on how to remedy this? Or am I doomed?

Thanks!


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Best answer by rrich-2

I solved it this way.    I went and redefined the first of the twisted wires and changed Section plane control to constant normal direction and chose the FRONT datum plane as my direction.   It appears as though it is the end point of the circle that was flowing around causing the little tangent line to display on the drawing.  but there is still some issue with the hidden lines not all displaying properly.

4 replies

V
VladimirPalffy14-Alexandrite
14-Alexandrite
August 13, 2015

Hi, it is possible to share your part (we can try to investigate your data)

(do not forget add the information about ProE / Creo version - datacode)

Regards,

Vladimir

M
mdamplo1-VisitorAuthor
1-Visitor
August 13, 2015

Hi Vladimir

I've attached the .prt file along with a .drw of the two views in my previous screenshot

PTC Creo
Release:  3.0

Date Code:  M010

Thank you so much for looking into it! Let me know if I can provide anything else.

    R
    rrich-21-VisitorAnswer
    1-Visitor
    August 14, 2015

    I solved it this way.    I went and redefined the first of the twisted wires and changed Section plane control to constant normal direction and chose the FRONT datum plane as my direction.   It appears as though it is the end point of the circle that was flowing around causing the little tangent line to display on the drawing.  but there is still some issue with the hidden lines not all displaying properly.

    Chris3
    Chris321-Topaz I
    21-Topaz I
    August 13, 2015

    Its likely do to interference. Creo has a hard time drawing lines when geometry overlaps. When you think about it the Math is very complicated.

    M
    mdamplo1-VisitorAuthor
    1-Visitor
    August 13, 2015

    Thanks for the reply. There is no interference though. I have seen the problem with overlapping geometry before, but I've checked this model over many times. It's two separate sweeps, twisting around each other, but at no point do they intersect anywhere in the model. The math is still very complicated in this situation, so it's probably a similar issue, but no interference happening.

    S
    svillafuerte1-Visitor
    1-Visitor
    August 13, 2015

    It looks like it may be an accuracy situation. I took your model and changed the accuracy as shown to .00005 and then went to the drawing and it made half of the unwanted lines disappear. But if I tried to make it an even smaller accuracy then it wouldn't regenerate it at all. Hope this helps with some more information.

    Wire Accuracy.JPG

    Test Wires.JPG

    Shane V.

      S
      spikaart-21-Visitor
      1-Visitor
      August 13, 2015

      Maybe try setting accuracy to absolute and setting a value of .0005 inches (or .01016mm)? It's worth a shot.

      T
      23-Emerald IV
      TomU23-Emerald IV
      23-Emerald IV
      August 13, 2015

      Whatever it is, Creo 3.0 M050 apparently fixes it.  When I open the drawing I can see the extra edges, but as soon as I make any changes the extra lines go away, and I can't make them reappear.

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