NX7.5 - PIPE CONNECTION 2

[CAD2015]

Hi,

How could I make a connection between the two pipes in attachment?

I tried Curve Mesh, but it doesn't work!
Thanks

MZ7DYJ

 

[kapmnit123]

Hi,
You can use Through curve (Alignment :By Points).I am attaching an image herewith.
Best Regards
Kapil Sharma

 

[CAD2015]

kapmnit123
Thanks for your fast reply.
Caould you send the NX file?
I still can't get it!

MZ7DYJ

 

[kapmnit123]

Hi,
I am attching the part file (sorry it is saved in NX8.5).
Best Regards
Kapil Sharma

 

[kapmnit123]

Hi,
Just managed to get a video shoot in a jiffy.Hope it helps.I guess the process will remain the same in NX7.5.I could have used more coupling points but not done so due to time constraint.
Best Regards
Kapil Sharma

 

[JohnRBaker]

Here is an NX 7.5 version of the model with the Surface Through Curves using a Point Allignement.

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.

 

[CAD2015]

Do you have NX7.5 by any chance?
We use NX7.5 only!

MZ7DYJ

 

[CAD2015]

Thanks!
I have another related question:
I noticed that if the two yellow arrows could be placed at the same degree (same location) and the same direction, Through Curve would work perfectly!
How could those two yellow arrows be moved?

Regards,


MZ7DYJ

 

[JohnRBaker]

The location of the so-called 'Yellow' arrow indicates the origin and the direction of the curve/edge parameterization, that is where is the 0% point (the start) and in what direction is the parameter positive (as it moves toward 100%). Now this 'location' and 'direction' are determined by how the geometry was originally created and is not easily changed or modified, particularly if you don't have access to the reference geometry used to define the original models. Now when we use this geometry in a operation like the Surface Through Curves, the function provides you with various schemes to either use the reference geometry 'as is' or to alter at least how it's being interpreted by the Surface creation code.

In the case of the 'direction' that's an easy one, you can just tell the software to 'pretend' that the parameterization goes in the opposite direction than it does.

However, for the 'location' or start point, that's a bit trickier. As you've already surmised, IF the start points had already been aligned in the original models you could have just used the normal 'Alignment' method of 'Parameter', which basically would match 'points' on one curve/edge to the 'points' on the other based on their parameter position, 0% to 0%, 25% to 25%, 50% to 50%, etc., or even 'Arc Length', which matches the 'points' based on percentage of length of the corresponding curves/edges (this may sound like it's that same as 'Parameter' and while it's often very close, there are some subtle differences particularly if the original reference curves were complex splines or special options where used to control the shape of that original body/face) would have worked in this case. Now in the case that you provided, there the start 'points' were 180° 'out-of-phase', the only practical approach was to use the 'By Points' method where the user explicitly tells the software as to WHERE on the two set of curves/edges should you 'pretend' that the parameters are the same. In my example, since the model was simple, I only indicated where I would like the '0%' point to be assumed to be on the second curve. In this case, I said the '0%' point on the start curve is to match the '50%' point on the other curve. Since everything else was a simple arc, just 'out-of-phase', only ONE point was all that was needed.

Anyway, this is something that time and experience will help you understand beter as to how to use these different 'Alignment' methods effectively and when appropriate.

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.

 

[CAD2015]

Dear Mr. Baker,

Thank you very much for taking time to send us this last valuable answer!

Warmest regards,

MZ7DYJ