[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]

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?

:cheers: 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

[studysession]

In the beginning I wil start with wood so just ordered this chuck here:
http://www.pennstateind.com/store/csc2000c.html

Faceplate:
http://www.pennstateind.com/store/cf6.html

Will make an adaptor for my rotary to the faceplate and use it. Will be using mostly wood in the beginning.

[studysession]

Here is the DXF file that I am using as the front of the face plate for my mount. The screw holes I will drill manually for now.

Once I get the faceplate and chuck will make an adaptor to mount it on my rotary.

Thanks for the help

[ger21]

What are using the faceplate for? Doesn't the chuck mount to a 1"-8 spindle? I have a Nova chuck, which looks similar, and it threads on to the lathe spindle.

[studysession]

What are using the faceplate for? Doesn't the chuck mount to a 1"-8 spindle? I have a Nova chuck, which looks similar, and it threads on to the lathe spindle.

Yes it threads on. The face plate has a stand off on one side where the chuck threads onto and attach the faceplate to my rotary.

The DXF file attached in previous post is front plate for my mount. Right now having trouble with offsets in LazyCam - either that or made the center to tight. When I cut it out it is bit to small so making offset little different to compensate.

Also curious on what people do when cutting out pieces from 3/4" MDF. It gets to end of cut then ready to come out. Well the bit hits it as it moves from its place and messes up my work.

Thanks for the help.

BTW - I got a new camera. My DIY machine looks like poop - but it works. Will post some pics this coming week.

[studysession]

Here are some pics. Remember my router is still in very early process. Due to lack of space I am building on my kitchen floor.

[studysession]

OK -
My 3 jaw chuck and facplate showed up. I di not need the face plate so sending it back.

I am making an adaptor for the chuck to the rotary but have an issue.

When I use my CNC router on MDF and cut out anything. The part where the spindle is when it cuts the last part of the work away where it can be picked up from the table. Always moves a bit and gets a gouge from the spindle.

Hopefully I explained that well enough to understand. Any ideas on better way of cutting things out?

Thanks

[High Seas]

Studysession - Here's my approach - just got my 4 jaw chuck in todays mail. But my hang up is the gear for my PACSCI stepper. How did you attack that. Find a source so I can get one?
This may look like a cross post but I don't think it is

:cheers: Jim

[Graham S]

Turn some bar, bore/ream to match stepper shaft and mill a flat on each side. Glue into gear.

Graham