How to model RD40 1/7" thread in fusion 360
I am looking to model a RD40 1/7" internal thread in fusion 360. Can someone share few steps or a tutorial.
Accepted answer
The hardest part was finding the specifications for the thread. I think searching for the dimensions took an hour or two.
After that the model was pretty easy. It's like any other thread. I've never used Fusion 360, but the steps in SOLIDWORKS are:
- Create a helix. The helix must generate a thread of the correct hand (right vs. left), and must have the right pitch. Pitch in this case is 1/7 = .1429" (3.629mm)
- Create a profile sketch so the major and minor values of the thread are formed. This thread is easy because the profile is a circle
- I actually used two sweep commands. One to form the major OD, the other to form the minor OD. A single sweep might work, but I didn't like the results
There are a few more of these threads in the Library now. Maybe someone made an internal version already?
