BobM3
Cast Iron
- Joined
- Feb 23, 2006
- Location
- Minneapolis
Currently we farm out some small worms for thread grinding. The blanks are heat treated to 50 Rc. There is no roughing out of the threads prior to grinding so I'm guessing there must be a lot of time on the grinder. The thread is .625 PD and the OD is .75. The pitch is .1963 and the length of the worm is 1". Years ago we asked the firm doing them if it would make sense to rough out the threads first but they said it would then be difficult to pick up the thread for finish grinding.
So how would this part be ground?
Multiple passes (it's currently a nice surface finish)?
If multiple passes, a roughing wheel and finishing wheel?
Can this be done with a manual machine?
Thanks,
Bob M
So how would this part be ground?
Multiple passes (it's currently a nice surface finish)?
If multiple passes, a roughing wheel and finishing wheel?
Can this be done with a manual machine?
Thanks,
Bob M