olympictool1
Aluminum
- Joined
- Mar 2, 2011
- Location
- NJ
Hey all, I have an 8 TPI acme thread that we are putting on to a part that a cap screws on. The customer did not supply a print so i spec'd it out to a 8 TPI acme, everything on the part measures to be a standard 8 acme but no matter what we do while making the the thread the mating part will not fit on. We are threading on the sub spindle of our cnc lathe so we have tried both handed tools and directions, multiple angles of chamfer at the start, dropping the minor and major to the point you would think the cap would just fall on along with tons of other things. I have never had an issue with an acme thread like i am having with this. Any in sight would be greatly appreciated, maybe i am missing something simple and just not realizing it.