Hello
I got a mockup in stl format in CATIA. The model was made in solidworks but I use it in CATIA.
In this model, there are a number of holes and tapped holes (mechanically speaking).
On the other hand, it seems that the tapping at the CAD level was not done with a tapped hole function but only with a conventional hole. So there is no tapping. This is a problem for me because in the dimension module I use some options are activated only if threads are detected.
Is it possible that "tapping" functions are lost when switching to stl? If so, is there a way to make them reappear?
It seems to me that it is because a realistic rendering visualization does not show me tarouded holes but cylinders.
Thank you in advance for your ideas.
I don't think that the stl format allows you to transmit the information of a tap if it is not modeled explicitly.
So yes, the information is lost except that you can maybe add this information since the hole must correspond to the hole at the top of the thread (so for example Ø5 for M6)
Hello.
Under CATIA I don't have the modules to work efficiently on an STL file, I use SpaceClaim.
If the model was created entirely in SolidWorks, a STEP would have been better for CATIA. Of course, if this model used an STL part as input, there is no miracle, the resulting geometry, whatever the exchange format, will remain a mesh.
To my knowledge, only PMI information via the STEP format can be interpreted between different software.
"It seems to me that it is because a realistic rendering visualization does not show me tapped holes but cylinders"
Unfortunately no, switching to realistic rendering simply hides the connection edges but does not remove them, this mode does not create a continuous curvature surface.
Are you able to recover the STEP, or from my point of view if the part is not too complex redoing it seems more productive to me.
Hello
I wrote yesterday a little too late. The part I use in CATIA comes from a STEP file and it was originally created in Solidworks.
So, my question was whether the tapped hole function could be lost in the switch to the STEP?
As Franck points out, "To my knowledge only PMI information via the STEP format can be interpreted between different software", I think I should have retrieved the threads if it had been created in Solidworks.
As a result, I think that the holes initially made in SW must have been simple holes and not tapped.
Interoperability between CAD software is a dream but it is not for tomorrow, publishers are in competition and there are differences between the 3D modelers they use.
No thread tapping function in CAD software actually draws the threads.
The opening of an AP203 or 214 step can possibly pass information by adding wire elements that define the thread thread (3/4 of a circle for the profile diameter for drilling, ).
But the only way to pass all the information is the AP242 STEP and for me it would need an additional CATIA module
This would only guarantee that my STEP file contains all the information for production, but not that whoever reads it could use it (let's not forget, publishers are competitors).