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sroenne1-Visitor
1-Visitor
November 14, 2016
Question

Problem importing STEP

  • November 14, 2016
  • 5 replies
  • 13298 views

Hi,

I’m trying to import a Cylinder ( 2 parts, Tube and Rod) into Creo 3.0. Problem is that it will not generate a Solid of it, when I try the same into Autodesk Inventor, it makes it a Solid no problem. Been trying Import Doctor, but not much Luck with model so far.

Anyone who have some good tips on how to do this?

Adding problematic Cylinders:

 


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5 replies

S
sroenne1-VisitorAuthor
1-Visitor
November 14, 2016

Thanks for reply, will try again now, and post screenshot of problem-area.

S
sroenne1-VisitorAuthor
1-Visitor
November 14, 2016

I worked 5 years with Inventor, and rarely had problems that I can remember with importing *.step files. Though I have tried to Save As from Inventor, to several other 3D formats, and then import to Creo, without any luck. Been looking at youtube for tips as well, but no luck so far. I have also talked to the Company who made the  Cylinders, and they tested to import again, with no problems, but then again, they use Inventor, so it might be something there.

S
sroenne1-VisitorAuthor
1-Visitor
November 14, 2016

Here are 3 Pictures. 2 from Creo 3.0 and one from Autodesk Inventor 2015. Used the same model to import in both CAD's, easy pie in Inventor, but not so in Creo. Most of the model come in as Shell.

14-11-2016 15-52-34.png14-11-2016 15-54-30.png14-11-2016 15-54-03.png

M
MartinHanak24-Ruby III
24-Ruby III
November 14, 2016

Hi,

in 88965-Rod-rev1.step.zip there is STEP file representing an assembly. Unfortunately it is imported into Creo as PART, by default. This means that STEP files does not contain information about assembly components. Therefore Creo is not able to import it properly.

MH

    S
    sroenne1-VisitorAuthor
    1-Visitor
    November 14, 2016

    Hi, and thanks for reply.

    I was not aware of that.

     

    P
    psobejko1-Visitor
    1-Visitor
    November 14, 2016

    I have heard that the data made with PTC export tools gives other CAD users headaches.

    Here the case is that STEP file is not imported correctly - also not unheard of...

    I'm pretty sure you can use the import data doctor to fix up the problems - for included example - I've managed to solidify the cylinder rod.

    My general method is to remove the "bad" geometry / components.  But this is painstaking work that leads to modifying the original geometry and does not solve the root issue.

    For your files, though, it's curious that Creo tries to bring them in as parts - they are clearly assemblies.  Is there a setting in inventor that you can use to manipulate this aspect?

    You can also try to remove the problem components prior to exporting the Inventor file.  For example - it seems like it's the spherical bearing that's giving creo troubles; If you remove that part out of the Inventor assembly prior to generating the step file, does that help you on the Creo end?

      S
      sroenne1-VisitorAuthor
      1-Visitor
      November 14, 2016

      Hi, and thanks for reply.

      I can check with the Cylinder-manufacturer to see if I can get the original Inventor-assembly packed, but it usually takes a bit of time to get a response, and this project, as always, need to be done asap.

      To repair the Geometry is quite painstaking, and not to straight forward, as I have not used that tool before, but I’ll try to see what I can make of it. 

      I for first did not think this would become a problem, as 3.0, was supposed to just use any format easy pie. First I’ll try to work with the model that got imported correctly into Inventor, to see if I can simplify it some. I’ll write update when I have tested more.

       

      P
      psobejko1-Visitor
      1-Visitor
      November 14, 2016

      Yeah, let them know that their STEP files come in as surfaces not just in Creo - I tried it in OnShape and same thing happened.  It well might be that other CAD packages can successfully open their files (can someone with Solidworks try it?), but there is a valid reason to be suspecting that they are generating a non-standard STEP file.  Maybe there is a way they can enforce AP203 / AP214 compliance during export...

        S
        sroenne1-VisitorAuthor
        1-Visitor
        November 15, 2016

        Thanks for your effort and time.

        I don't need my model to be 100% accurate, but it would be nice to have it as a solid. I have asked the manufacturer, to send me their files as "Pack and Go". If they are willing to do that, I can simplify the model, and try to export it myself, or at least test diffrent variants.

         

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