Helical Gear Fixture

[ozzie46]

    Well I made the Chucks Fellows' Helical gear cutting fixture and the arbors and gear blanks in preparation for the arrival of my gear cutters. They are supposed to be here Wed or Thurs.

 Thank You Chuck for posting them. 

 
.  Here are the parts.





An assembled view. There are 2 arbors because the bores on the gears are .3125 on one and .250 on the other.




And a pic of it mounted in the vice.



 
 I turned the long shaft between centers and discovered my lathe was turning a slight taper.
When I checked it I found out it was about .007 over 10 inches, so I spent today aligning the headstock and tailstock. My test bar showed .000 over 10 inches.   

 I know tomorrow with temperature changes and such it probably won't be that good but it was today.


   Ron

[steamer]

No issues at all with that lathe!

Dave

[ozzie46]

   Yes Dave, I really like this lathe. It's the Grizzly G0602 10 x 22.

 (No affiliation. just satisfied.) 

 Although, I do have a run capacitor coming for it. The one in the lathe has 'tumors' on it. Still running but you have to wait once you shut it off for the contactor to trip so it will start again. You can hear it "click".

 Ron

[cfellows]

Congratulations!  You're the first person besides me to make this that I know of.   When you are using it, go slow and make sure you turn the blank against the spin of the cutter.  Don't try to climb cut or you'll be in for a rude surprise!  Also, focus on keeping the edge of the triangular sleeve tight against the bearing guide.  It actually works very well and is not scary to use.  I've made a brass gear and an aluminum gear, but no cast iron or steel. 

Chuck

[ozzie46]

Thanks Chuck. I will be using bronze for the actual gears. But will use aluminum for practice and to get the procedure down.

Thanks for the reminder on climb milling. I had that experience a few years ago.

  Ron

[arnoldb]

Good going Ron 

Remember to show us how you get on 

Kind regards, Arnold

[ozzie46]

  Will do Arnold.

 Ron