Mechanism of Spur Gear Hobbing

Kosuchon Satayotin, Yasuaki Hiroo


For the involute gear tooth generation, the hobbing method is used generally since the accurate gear can be obtained efficiently if there are no form restrictions on the gear blank. Adding to a good hobbing machine and a precise hob, the correct setting of the hob and gear blank are needed to generate precise gear teeth. A relatively simple method is developed to find the approximate relation between the tooth profile error and the hob or the usage of it by simplifying the action of the generation of the gear toot.


Spur gear hobbing; Tooth profile error

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