Jay Wyant's Indexer

[cncb]

Ed, thanks for your information in regards to the photos of that diy 4th axis. My main question is how is he going from a hardened drill rod to the 4 jaw chuck head which I'm assuming is something like a 1"-8tpi arbor? Is he using some kind of adapter? Also what is the diameter of the rod he used? Any parts names/suppliers would be helpful. Thanks.

[ed_lang]

The adapter from rod to chuck was gotten with the chuck from Woodcraft.

Pulley, belt, rod and bearings were from either Graingers or McMaster Carr.

Sorry I don't have part numbers, but the packages were put in the trash.

The pulley on the stepper had to be drilled. Look at the Oriental motor site for the size of your motor shaft and order the right size bit when you order the pulley.

Buy the size rod and bearings that fit the chuck adapter you can get.

[cncb]

Couldn't find that chuck or adapter at woodcraft or in their catalog. Anyone have any sources for chuck adapters? I was thinking a 1/2" arbor on the motor side with a 1/4-1/2 coupler on the motor shaft to arbor and on the other pulley for the lathe arbor shaft either 5/8 or 3/4 but not coming up good with adapter sources.

[ed_lang]

I found these on WoodCrafts site.

Search for "chuck" or just follow this link.


Oneway Chuck.
5/8" plain adapter so get a 5/8" shaft.

http://tinyurl.com/4j8f65

Nova for those who want to same some money.

http://tinyrur.com/4mx164

[cncb]

Thanks for the links Ed. The nova is looking good; oneway is a bit pricey but I know its well made.

[jay_d_wyant]

Sorry it has taken so long for me to respond, I had no idea such an in depth conversation was going on. Just so no one has to continue to speculate as to how I did it, here is my list of items purchased to build my indexer.

1 2L521 Pulley,Gearbelt Xl 1 166 $18.24 $18.24

1 2L533 Pulley,Gearbelt Xl 1 166 $40.05 $40.05

1 1DHK3 Gearbelt,XL,130 Tee 1 166 $6.19 $6.19

1 5JZ45 Shaft,12 In,5/8 In 1 $27.70 $27.70

2 6X233 Mounted Ball Bearin 2 202 $34.60 $69.20

1 1K514 Jobber Drill,14.00m 1 3045 $25.80 $25.80

1 1DHJ7 Gearbelt,XL,105 Tee 1 166 $5.59 $5.59

1 4UM66 Silver/Deming Drill 1 3050 $14.10 $14.10

As you can see I bought two belts, as I was not sure which would be the best length until I had all the parts in my hand. I did, as Ed stated above, use a Nova Chuck with a 5/8" plain insert. The motor shaft is 14mm. If you have further questions, feel free to email me and I will help with what I can.

[cncb]

Thanks for the info Jay, appreciate the details. Hows the 3:1, plenty of torque doing turnings?

[jim_stadtlander]

With these setups using a threaded end for mounting, does anyone find that it loosens while in use? A lathe turns one way with the force applied in one direction, but when using the indexer on the shopbot it turns both ways when in use, applying force in both directions, so wouldn't it loosen up at times with a threaded end?

[myxpykalix]

jim,
here is what happened to mine when the screws worked loose

34760.jpg

34761.jpg

I put some loctite on them and so far no problem.
My setup is a little different than his but the solution might work the same. Either that or drill and tap a set screw.

[ed_lang]

On every wood lathe I have owned or turned on there are locking screws (most folks don't use them) to lock the chuck on the spindle. As you can see from the pictures John posted above, the shaft is keyed and the chuck adapter is attached by a taper and three screws. This setup cannot back out as there are no threads, like found on wood lathes.