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Method to reorient coordinate system for STEP export?

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CNSZU

Mechanical
Sep 2, 2005
318
Hello,

The problem is simple, when an NX model is exported to a STEP file and opened in Creo, the orientation of the model is weird. That's because in NX, Z is the up axis, whereas in Creo, Y is the up axis. I'm trying to find a solution where opening a STEP file made in NX will orient itself the proper way in Creo.

Here's a method I'm thinking about implementing. I've discovered that if you open the STEP file in notepad, find all occurrences of for example:

#91=DIRECTION('',(0.,1.,0.));
#114=CARTESIAN_POINT('',(0.,0.,-111.));

and replace the Y with the Z, and replace the Z with the negative of Y, then save the file, it will open in Creo oriented the proper way.

But before I create a program to do this, and since this is probably a common issue, does anyone know how they would normally solve this problem?

NX9 Win8.1 64bit i7-3770K 16GB Quadro2000
 
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MikeHyde
it appears as a bad idea. Coordinate systems are still different.
IHO files converted to ProE, from UG, should not matter that rotation because once in ProE it is handed to low-paid draft-person not an Engineer. I just do not see why a draft-person should care for the model orientation.
 
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