Posted by Dan McEachern on January 10, 2008 at 20:52:13:
In Reply to: Can this be hobbed? posted by Greg on December 26, 2007 at 19:08:57:
Greg- It can be done- you will fight hob swivel clearance issues etc, but the large part diameter will help you in this case. Trying this with a RH hob will be a bad idea as the cutting forces will overhaul the work spindle unless your index worm backlash is extremely low, and as Ron said above, give you a terrible finish. Set up your feedrate very low- .005"-.008" as you need to adjust for the high helix angle.
You don't say what the part material is- that could be a big factor on a job like this.
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