Cutting Tetrix gears

[Forhire]

Originally Posted by asid61

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.

Yeah, making a hobber would be a lot of work. Have you seen the Jacob's hobber? http://www.lathes.co.uk/jacobs/ Castings use to be available and you see variants now and again online. For small FRC and FTC gears something about that size would be perfect.

I wonder if anyone has devised a cnc hobber on the cheap?