@info4DKZM wrote:
Thanks, I know that threads don't need to be modelled. I thought it might help with the issue I was having. I see you changed tooling but not sure what else ?
I copied your threading operation to my original but still not luck. I get a no threads to machine error message.
That's interesting observation regarding modeling threads, if I try something and it doesn't work, I ditch the idea.
Turning groove first then turning profile with grooving tool is odd, actually never seen before, numerous issues there so I tried to show you logical way to do it.
Alternative, and preferred way, is to turn just past the groove, finish groove and threads then turn rest of the body and cut off, but now we are going beyond the basic approach.
I added sketch of sectional view, that I believe is critical element in being able to make threading tool path.
I delete files as I go or otherwise I would have inventory of "issues" that are not issues to me.
I uploaded full file without anything missing so you can compare your original file with one I uploaded, step by step, to find out what else is different.
Whenever i see model setup as Mill-Turn that doesn't have sketch of sectional view, I add it to model by cutting it in half and projecting surface onto XZ plane, save sketch as DXF file, undo everything until I get full model back on screen, start new sketch in XZ plane and import that DXF file, lock it and from there on I can use sketch as geometry to program turning work.
I orient model same way in Design and Manufacture space so that I can switch between them and have sketches coincide with model in every plane, important for milling features on other parts.
In some operations, 2D sketch is critical element, if it's not there you get no tool path and nothing tells you why.
You really only need 2D geometry to program all turning work, in Fusion model works in some cases and not in others.
Here is a experiment with potential clue, leave all operations unprotected, go to Design and delete sketch of a profile, go back to Manufacture and you'll see that threading operation is gone from list.
If you reload file and protect all operation then delete sketch of profile, your threading operation is still there.
That tells me you need sketch of part profile to program threading, once generated and protected, deleting sketch doesn't delete the threading operation, ....... hmm....... there must be some secret connection there.
I'd say the reason why copying threading from my file into your original file doesn't work is because your original file has no sketch and you are back where you started.
I added 30 degrees chamfer to back of threads, otherwise you get sharp burr that interferes with mating part.
Added few corner fillets and used smaller grooving tool to minimize tool pressure on shaft, just to show workflow that more closely fits my daily routine.
