[Steve Zhang]

Helllo,
I created a 3D path with igs file,but the arrow direction are all +Z.And because of too many points,I can't select the point I want.
How can I make all arrows normal to the path and toward outside?

[Albert]

You need a surface in contact with your curve so RoboDK can automatically extract the normal to the surface when loading the IGES file.

[Steve Zhang]

Thanks，one more question
How To Merge Different Types Path Files（igs,csv...） And My Part in RoboDK？

I made this path with a 3D CAD.
To export path,so my path has to be igs file,while the part is stp file.
even I chose 'move nested', it didn't work...
I wanted to know how I can merge my CAD part and path file in RoboDK.

[Jeremy]

Have them in the same reference frame, select both -> "Merge"

Jeremy

[Steve Zhang]

Thanks for your reply,Jeremy.It works,but new problem comes.
You can see I have a continuous curve around a cylinder surface, but its normal direction is discontinuous and changes abruptly at some points.I don't know why. How can it be improved?

[Albert]

You can activate this option to have more accurate normals when importing IGES and STEP files:

1. Select Tools-Options
   
2. Select the CAD tab
   
3. Activate the option Import curve and point normals accurately
   

[Steve Zhang]

Hi,Albert
I followed your method,but it doesn't work.And it got worse somewhere.Is there any other way?

[Albert]

Have you tried importing it as a STEP file instead of an IGES file?

Can you share your 3D models? (STEP and/or IGES files)

[Steve Zhang]

No,I still use the igs file.
I can share my igs file,you can check.I made this igs file in Catia.

[Jeremy]

Are you trying to do some carbon fiber wrapping or something like that?

If so, this method might not be the best.

Jeremy