Sketching in drafting 1

[chopper75]

I'm having trouble sketching in draft. What would like to do is be able to constrain new sketch elemnets to exist view edges. Something as simple as drawing a line parallel to an existing view edge or connecting a line to the endpoint of a view edge.

 

[JohnRBaker]

You will have to 'project' the desired 'view edge curves' into the Sketch first but be aware that theses 'projected' curves will not be associative to the original model objects that they were projected from.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[SDETERS]

Make sure you are sketching in the correct view. Also make sure your selection box is set to entire assembly.

 

[Toost]

Turn on "Extracted Edges =Associative" on the views that you intend to use geometry from. ( double click the view - General tab)

 

[JohnRBaker]

Yep, that should work. Another example of an older capabilities benefiting a more modern approach.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[chopper75]

Ok thanks. I tried this in an exploded view and the edges seem to be projected from the objects unexploded position which doesn't work for me. Is there a way around this?

 

[JohnRBaker]

An 'exploded view' is sort of an optical illusion. The actual components have NOT moved.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[chopper75]

So there is no way to reference the edges where they appear in the illusion?

 

[JohnRBaker]

That's correct. You might want to try using Arrangements instead as that my prove to be a better approach in this situation.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[Toost]

Chopper, can you illustrate the case ?
I tried snapping to an exploded view in NX 7.5 without problems, It snaps to the exploded positions.
I have not projected anything since i don' understand why i should, even the silhouettes of cylindrical faces are usable without further actions.
Just set the extracted as described above and give it a try.

Regards,
Tomas

 

[chopper75]

Toost, I tried to upload an .avi but my company blocked the upload. I can snap to certain things but not all. Some centers will work, no endpoints. I have endpoints selection button active. But I don't only want to connect to edges. I'd like to apply parallel constraints of sketched lines to view edges as well.

 

[Toost]

Here's a video in return. I hope it shows what you are looking for.
This is a small demopart, left view exploded as can be seen.
Oops, just noted that i didn't snap to anything, only setting constraints, but snapping is no problem for me.