single vs. multiple thread hobs


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Posted by Kurt Instigator on November 10, 2004 at 13:22:16:

I've been told that a multiple thread hob will improve cycle time by rotating the gear faster thus increasing the linear feed rate of the hob, but what is the difference between this and increasing the axial feed of a single thread hob? Does anyone know what kind of effects this has on profiles and finish?


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