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Post by famuel on Mar 18, 2013 21:46:57 GMT
How do work out the gear train on a mill and dividing head to cut a helical gear?
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Post by Jim on Mar 22, 2013 2:42:14 GMT
You might like to look at Ivan Law's book 'Gears and Gear Cutting' chapter 6. His book is No 17 in the Workshop Practice Series published by Argus Books.
It's a very handy book which I used to cut all the gears including the bevel gears for the compensating gear for my 3" Burrell SCC, .
Jim
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Post by bobweight on May 1, 2015 13:45:22 GMT
Cutting a helical gear is no different, in terms of ratios, from a straight gear. You still need the same numbers of teeth, they just get cut at an angle. The same applies to bevel gears, skew gears, etc, each tooth fits between two others so the ratio stays the same. Working out the angles is more complex, of course.
But I expect that the recommended book has offered all the complication you need.
Cheers, Tim
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