Quote:
Originally Posted by Forhire
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. |
When we made gears in a low qty, we made the blanks on the lathe and then talked to a local hob shop. They allowed our kids to come in and observe/learn about the process. It was a really cool experience overall.
https://www.chiefdelphi.com/media/photos/36984
They also did the hobbing for free for us! But the leadtime was about a month, they just found a day or two where the machine was not being used at all.