Quote:
Originally Posted by asid61
D: Wow that's a lot of teeth. Seems like a lot of time to put in for a single gear (especially with the non-automatic indexing!) but if it's for the learning opportunity I can respect that.  The things I've done for the learning opportunity...
Your results look really good! Love the pictures of the lathe and setups, lots of stuff covered in the making of a single gear.
I've always wanted to set up a gear hobber or something similar so I can make my own gears without having to worry about the hand indexing and all that. |
It was at least an hour, 4 or 5 students traded out. Everyone got a chance to cut. The indexer certainly wasn't manual... all they had to do was press an advance on the controller to advance one tooth. I'd say semi-automated.
The issue with hobbing is that without a hobbing machine that can keep the hob and blank in sequence you still have to gnash the gear prior to hobbing, generally with a slitting saw. Granted hobbing generates a more precise involute form. The way I figure it is... if I have to gnash the bank anyway... I might was well just use an involute form cutter and be done.
I'd love to see some examples of hobbing if any teams do it. I'm all about speeding up the process.