Constrain a point to lines in 3D space?

[enginerd1959]

I'm using UGNX4. I know how to constrain a point to a line (or 2 lines) in a sketch. How do you do it in 3D space?

I have a bent tube & I'm trying to locate points where the straight sections would intersect, if the radius sections weren't there.

 

[KLineDesign]

Hello enginerd1959,

You probably should elaborate a little on what you would like these points to do. I am guessing you need them for measurements, and that they only need to follow the theoretical intersection.

In NX6 (5 too, I believe) points can be selected to be associative, I am not sure this existed in NX4 (I went from NX2 to NX5). It sounds like these tubes are created using lines and fillets outside of sketches, and it looks like they are simple bends. I would have a sketch positioned at each bend for modification in this case (complex bends, or wiring, I sketch just the straight portions), but seeing as it looks like you just want this point to be associative after the fact without recreating anything I would probably just create a new sketch that contains a point constrained (point on curve) to each line.

I hope this helps,

KLINE

 

[enginerd1959]

Yes, the purpose of the points is so I find all the theoretical intersections in 3D space, with the start point at 0,0,0.

I need to post these point dimensions in a table on the drawing.

 

[JohnRBaker]

How about something like this (see attached NX 4.0 example)?

Of course if you Show (Unblank) all the curves you will see that you probably don't actually need to points since the end 'points' of the lines will probably do what you need to start with.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

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