Gallery, Projects and General > The Design Shop
Bevel Gear Mill
vtsteam:
Thanks djc, I have lots of gear cutting reference books, but appreciate the suggestions. Thanks definitely for confirming that a horizontal mill can be rigged the same way. :beer:
The main disadvantage I see to that method is it takes probably a minimum of five passes to cut a decent shaped tooth, and probably seven would be better. If 7, that's 210 passes for a pair of 15 tooth bevel gears.
In addition, on a lathe, each pass would take an adjustment of the carriage, so, 210 adjustments as well. (A shaper with racheting automatic feed would be less tedious.)
With the profiled cutter method on the lathe you would take 90 passes for the same pair. and you would only make 6 carriage adjustments and 6 index adjustments.
vtsteam:
hmmm, since I would normally want to make pairs, anyway, would there be a way of cutting two gears at one pass? Might be tricky with two indexing wheels, and getting the gear blanks both exactly positioned in height. But maybe one indexing wheel geared 1:1 to a second arbor..... :loco:
mattinker:
Steve,
I think that it is interesting to see the action of the shaper gear set up as it reproduces a rack cutting tool. I understand that your looking for a "simple" way around this, replacing the shaper ram with a flycutter and a reciprocating carriage which traverses to allow the the blank to rotate is possible. It's the involute gear that results from a "rack" profile cutter is the "magic" bit!
Cheers, Matthew
vtsteam:
Yes I agree Matt, I really like that part a lot. :med:
vintageandclassicrepairs:
Hi All,
I saw this book on ebay and thought someone here could be interested in Bevel gear theory ?
https://www.ebay.co.uk/itm/GLEASON-12-INCH-STRAIGHT-BEVEL-GEAR-GENERATOR-MANUAL-1941/264813653248
John
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version