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. |
Ah, that's what you meant by "pulsed manually". I was thinking of you keeping a really close eye on the students every time they cranked the indexer.
I missed the part where you said "Haas 5C"
I was thinking about using a geartrain to keep them in sequence. If you have to gash the gears then there's no point to doing the hobbing over just buying involute cutters imo. I actually had a spreadsheet that had all the gears that were needed to be bought from Vex to generate most non-prime-tooth-count gears from 1-100 teeth and beyond. The hobbing machine that I designed required a lot more machining than I was comfortable with, unfortunately.