Gallery, Projects and General > How do I??
Cutting internal gear teeth
bogstandard:
Very interesting info coming out here guys.
Keep it up and I will be starting sooner than you think.
Just joking of course, this is a rather large subject to absorb quickly, but every little snippet of information all helps in seeing the big picture.
Reading technical information is OK to a point, having personal experiences to read is even better. There is a great difference between theory and practice.
John
John Hill:
John, are you going to be able to cut internal gears with those hobbing cutters? :scratch:
bogstandard:
John,
This is what we have been discussing.
The hobs won't cut internal teeth directly, only external.
But with the hobs I have, I will be able to make a cutter fairly easily, and that will then allow me to broach the internal gears to the correct profile using a hand cranked keyway slotter.
John
John Hill:
Oh right! Sorry I must have been a little switched off! I think if you want to cut model size internal gears you should call around here and use Sally Shaper. :coffee:
John Stevenson:
John,
Not sure what you mill looks like on the back end but many have a slotter position.
Some years ago a friend of mine, now dead, wanted to do similar but for keyways, I scrounged him a big angle plate, slide off a machine and a motor and gearbox and he built a slotter to suit.
Sorry about the state of the pictures but they were done with an early camera phone and I never got any decent ones but I thing you get the idea.
One of these and a RT and you have a gear planer.
John S.
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