I'm trying to repair a DaeJung 560 lathe. It seems the importer walked away from this critter a long time ago so I need to come up with the right gear spec to fix it. There is a plastic gear in feed drivetrain that is designed to be the sacrifical gear should a brain fart occur. Well at some point in time a brain fart occured. (NOT ME)
I used a program to generate gear data from WM Berg
It generated this data for 14.5 and 20.0 pressure angles. By juggling module and DP values I think I have the gear narrowed down to these two below.
So are there any quick and dirty methods of estimating pressure angles?
And while I'm at it what kind of plastic should one use to make the gear if I can't find a blank? The only thing I know about the gear is that the plastic is blue.
Thanks,
Wes