UNS Threads

[robertchadbrown]

I have a part with .775-48 UNS OD Threads, .955-48 UNS ID Threads, 1.04-48 UNS threads ID Threads. I am running into walls to get this programmed through Fusion. It will be ran on a HAAS ST30Y for now and then a Okuma LB3000. I would appreciate any help!

[seth.madore]

Can you expand on "I'm running into walls"? Are you referring to the tool producing false collisions, or is your turning tool colliding in some other fashion?

[robertchadbrown]

The verification is not cutting the selected threads on my imported step file. I tried to redesign the threads on a separate model to see if it was the imported solid but these sizes are not an option within Fusion when creating threads.

[seth.madore]

For threading in Manufacture, don't bother with modeled threads. For OD threads, model to the MAJOR diameter and for ID, model to the MINOR diameter. Inside the threading dialogs, we have the option for pitch and depths, so that "should" be able to get you going.

[Ketherton21]

what Seth said 200%, I never model threads, and if they are on an existing model I remove them, reference your trusted machinery's handbook for major and minor DIA and thread depth/pitch. input that into your cutting parameters with threading tool in fusion and you'll get your answer.

not to tell you something you don't already know but just incase, model a chamfer on a cylinder that is the major OD, undercut if necessary and enable "spring pass" run it, check your threads and then adjust as needed using negative stock to leave or just your wear comp on controller.