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View Full Version : John Stevenson’s gear hob



magnet-man
12-24-2005, 08:40 PM
John thanks for posting the “Gear Hobbing Without Change Gears” it has been interesting reading.

Since I am just getting into metal working as a hobby, please answer a novice question. I was under the impression when cutting helical gears the rotation of the gear blank had to be adjusted for the lead in the helical gear. I don’t see where this is accommodated in the your system. What I do see is the gear blank is set at a 45 degree angle on the table.
http://homepage.ntlworld.com/stevenson.engineers/lsteve/files/hob%20indexer16.jpg

Is this all there is to cutting a 45 degree helical gear with a hob?

Curiosity killed the cat and satisfaction brought him back.

Bill Samples