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worm gear calculations

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velocette:
Hi Bertie
following this posting I trolled through my "Filed Away For Future Action" and found this file on "worm wheel hobbing"
This may be of some use as it is a very detailed commentary on cutting wormwheels on a small lathe.
A quick read through it and it can be translated into using a tap for the hobbing tool.
Forwarded as a plain text file this loses some of the original format.
Hope this helps a little more

Eric

bertie_bassett:
well gave things another go this evening,

made it a bit smaller this time and gashed it deeper, stuck it in the mill. 

and . . . .

got 73!

skimmed it a bit and re-cut the slots for 72, tried again but no joy

Sea.dog:
Velocette, your hobbing text is certainly comprehensive. If anyone is having trouble reading it and wants to make it clearer, and  has Microsoft Office, then copy and paste into a new Word document, it's a damn sight easier to read.

Pete.:
Or read the generating page here:

http://www.mini-lathe.org.uk/making-telescope-worm-wheels-gears-mini-lathe.shtml

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