Macro to detect and delete multiple lines in sketches

Hi all,

Has anyone seen a macro to detect multiple overlapping lines in
sketches? I'm spending an awful lot of my time debugging crappily
drawing AutoCAD dwg imports that lines on top of lines. Of course
this makes feature generation problematic at best.

Thanks in advance


===========================================================================
Chris

 

Chris,

I know this isn't the answer you want, but if you are encountering
issues with the importation of ACAD drawings into SolidWorks, then I
highly recommend simply recreating the geometric natively in
SolidWorks. You maybe using more time repairing crappy ACAD sketchs
than you would if you created them from scratch within SolidWorks.

Matt
http://sw.fcsuper.com

 

I have an addin that counts and sorts sketch entities. That may be a
good start point.

The bad news is that the program on my website is an addin, not a
macro. I would have to go and find the source code.

<http://www.EsoxRepublic.com/freeware/>

 

Would you please?

Could you e-mail it to me at

Thanks Roland,

,
===========================================================================
Chris

 

I know what you are saying, but sometimes this is easier said then
done.

Thanks,

===========================================================================
Chris

 

Tools/Sketch Tools/Repair Sketch is the function you need to use right
after importing a sketch.
It will do exactly what you want.
If you still have superimposed segments, then they're aren't perfectly
superimposed (not the same endpoints) and no macro can solve this.
If so, you might try to select chains of segments and copy them to
another sketch, or "use" them from a different sketch.

 

Also, if I remember - autocad the an 'express tools' menu that has a
'delete duplicate items' which does contain a 'fuzz' factor. The
routine works very well.

Zander

 

In those cases, I simply import the dwg as the first sketch, and start
another sketch that uses the first's geometry.
Hope i'm clear enough.

JM

 

Unfortunately, I don't have access to AutoCAD, I use
DWGEditor/Intellicad at present. I had found a LISP gizmo that was to
have deleted these segments, but it's a compiled format and doesn't
work properly with DWGEditor/Intellicad.

Thanks to all who responded, particularly Phillippe!

===========================================================================
Chris

 

some of the oem 2D geometry can be quite complex and could involve many
hours to recreate. yes, i concur. easier said than done.

 

When there are two or more lines sharing a common sketch end point,
those line will appear 'thin' compared to sketch lines that meet/share
one common end point.

And using the sketch repair tool helps quite a bit, but is not
perfect.

samurai.

 

This is how it's supposed to behave, but I've found it's not
consistent.

One of the problems is I use GhostScript/GhostView to extract dxf's
from PDF catalog pages for those vendors who are afraid to give us CAD
files. Unfortunately these extractions tend to be the worst offenders
as in a lot of cases there are multiple overlays of lines. When faced
with this, I usually use the imported sketch as a baseline for the
sketch to create my geometry from.

I've found that as well :<

Thanks to all who responded.

===========================================================================
Chris

 

This is an older post but here are two ideas for you:

The first is that in ACAD when the file is saved out in one of the 2D
transfer formats, (unfortunately I can't remember which one it is
anymore) that the 3D geometery from ACAD gets flattened into a 2D
drawing. A lot of folks believe that ACAD is a 2D animal but it
really is 3D wireframe and when looking straight on it looks 2D. A
good example of this wold be a simple cube. Straight on there are
really two edges for every line and a line that shows up as an
endpoint at each corner. The Flatten problem has been an issue with
ACAD for a long time. If you look around for a tool called "flatten"
you should be able to find an AutoLisp routine that could help you.

On a more straight forward approach if you make a sketch "above" the
ported in sketch, (inside of SW) and then by selecting one edge at a
time from the origional sketch and projecting, (ie. convert entity)
you should be able to fairly easily recreate a copy that should be
much easier then starting from scratch. Be sure that the
associativity is turned off and then the origional ported sketch can
be discarded at the end.

Hope this helps,

EdT