attaching work to rotary on DIY table

[studysession]

I have two rotaries I want to use. One has a 2" rotary and other is a 5". Each has 4 screw holes to mount something on them.

What does everyone use on the rotary to allow them to attach round stock to it for cutting on a CNC routing table?

Thanks

[Kipper]

A chuck. 3 or 4 jaw flavour. hth

[studysession]

That's what I was thinking - but when I look at different chucks, I have no clue what to get and affordable.

How does the chuck attach to the rotary - anyone have any pics?

Thanks -

[rustamd]

Originally Posted by studysession That's what I was thinking - but when I look at different chucks, I have no clue what to get and affordable. How does the chuck attach to the rotary - anyone have any pics? Thanks -

You would probably have to make faceplate to mount chuch to the rotary table

[Kipper]

Usually I just bolt mine on with 4 bolts but there's an option to use the MT centre in the rotary table. You could make an adaptor but it's easier to have a chuck with 4 bolt fixing and just use "T" nuts and true it up (I usually cock something up along the way...however your mileage may be better than mine )

[Switcher]

1) http://www.cnczone.com/gallery/showp.../1233/si/chuck

2) http://www.cnczone.com/gallery/showp.../1232/si/chuck

3) http://www.cnczone.com/gallery/showp.../1234/si/chuck

Or as simple as this (square tube).
4) http://www.cnczone.com/gallery/showp...00/ppuser/1498

[studysession]

Attached are pics of my 5" rotary. The motor has been removed and putting a stepper motor on it instead. See the 4 screw holes on the front?
How do you attach the 3 or 4 jaw chuck to them? Are there holes in it for that already?

I feel like an idiot on this one. Thanks for the help.

[Kipper]

What is it? It looks like it's from a rotary display...Bigger/better picture needed for nosy peeps like me

[Fifty_ohm]

That looks like one of those BUD (Big Ugly Dish) positioners. I have a couple in my garage somewhere...

I was going to make something similar to this but the project stalled because of other things.

[High Seas]

studysession
The timing for your posts is coincident with my efforts. I have 2 of the same rotarys and have removed the motor from one.
I figured I'd mount a 3 or 4 jaw chuck that ties in to the 4 inner holes on the face plate. The four outer holes get fixed to the axis. I'm still looking for a chuck that has a means to mount easily to those 4 - but no luck yet. The 4 threaded holes are equally spaced on a 2 5/8 circle. Hopefully something is available that won't need too much interfacing.

(ANY ideas out there - are welcome!!)

BTW - Have you sourced a gear for the stepper to drive the rotary? Or do you plan on pulling the one off the Globe Motor and reusing it?

Jim

[studysession]

High Seas -
I have made my own drawing to mount the rotary using MDF. The drawing is done in TurboCAD. It does not have the screws holes, but should fit nicely. Figue once place the rotary in the cut out circle of the mount, I could just drill the holes.

If the cut outs match up, I will post the drawings if you like here in this thread. It might be cut out until next week though.

As for the gear, I am making my own adaptor on my lathe (Not CNC) to adapt the current gear to the shaft of a Nema 23 size stepper. Then will make a mount around it once I know what nize each part will need to be.

I really want to find a 3 or 4 jaw self centering chuck for mount on this and hopeing it is very affordable type of thing. I have never mounted a rotary like this and feel out of place trying to figure this out.

[studysession]

Later will post some pics. First try on cutting the hole for the rotary did not come out right. I measured everything then used the offset thing in lazycam. And it was smaller by very little. Once I have a good FXF file will upload for everyone to see and give me ideas.

Still need a 3 or 4 jaw chuck to mount to this thing and hold my work. Any links to ideas? Hopefully to something affordable.

Could I use an inexpensive chuck used for a wood lathe to hold aluminum on this? Those are affordable on Grizzly.com

Thanks