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CAD model export problem?

maciekmaciek OS Professional Posts: 17 PRO

Hi, 

Right now I'm machining injection mold and I have a problem. I don't know if it is a problem with machine, CAD or CAM.

This is the CAD shape:

Next thing I'm doing is exporting STEP files to Fusion 360.

 Then in Fusion 360 I'm doing CAM. This is the path:

As you can see, the path isn't round. It's made of straight lines and each one is about 5 mm long.

 And this is machined result:
https://www.youtube.com/watch?v=6t5fuSxt4As


Where does it starts? In CAD model? In CAM? Or maybe my milling machine isn't good enough?

I think it can be export problem, when I'm exporting to STEP file.

Comments

  • philip_thomasphilip_thomas Member, Moderator, Onshape Employees, Developers Posts: 1,381
    Maciek - hello!
    looks like a nice part. 
    I can help you a bit - STEP is a b-rep (boundary representation) format. That means that all edges are analytically defined (by formulas) - all edges are smooth curves by definition. 
    I cannot comment on how Autodesk reads in data or what it does with it or how it machines things. 
    That all said, there are a number of excellent free CAM tools in the Onshape App Store that you could try for a comparison. 
    Philip Thomas - Onshape
  • maciekmaciek OS Professional Posts: 17 PRO
    Thanks Philip, it is clear to me right now. I made topic like this on Autodesk forum and probably it's CAM problem.
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