Rotary Device

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Mudshark
Posts: 61
Joined: Fri May 11, 2012 2:14 pm
Location: East Coast Iowa

Rotary Device

Post by Mudshark » Mon Dec 31, 2012 5:33 pm

Built a rudimentary rotary device to use with Shapeoko. NEMA 17 stepper, some delrin, 3/8" aluminum rod, 5x8mm coupler and RW-1 PAC-BAY rod chuck. Disconnected an axis and plugged in, reset the steps per mm and ran.
Rotary device 1.jpg
Rotary device 1.jpg (91.57 KiB) Viewed 6395 times
Rotary device 2.jpg
Rotary device 2.jpg (117.9 KiB) Viewed 6395 times
This is rev.0, we'll see where it goes from here. Laser setup with this run, I have milled without issue.
Mudshark
Serial #0054, 2 Watt laser, dual X motors, double Y, ACME Z Axis, G540, Mach 3, rotating axis, needle cutter, Proxxon, 750mm x 375mm, laser cross hairs, auto zero, GT2
Ordbot #201, E3d hot end, bourdon tube feeder.

Improbable Construct
Posts: 997
Joined: Tue Apr 10, 2012 3:21 am
Location: Fairhope, AL
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Re: Rotary Device

Post by Improbable Construct » Mon Dec 31, 2012 5:52 pm

Nice!
I have been wanting a rotary for awhile now.
I have been looking at the commercial solutions but maybe I should try building one myself.
Thanks for the inspiration.
Shapeoko #Classified some of the bolts may be original parts.
Shapeoko 1 # ???? Stainless plates, still in the box.
Shapeoko 2 # 3926 not stock
Shapeoko 3 # 0003
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DanMc
Posts: 257
Joined: Fri Apr 13, 2012 3:34 am

Re: Rotary Device

Post by DanMc » Tue Jan 01, 2013 3:36 pm

Nice find on that chuck. I've been thinking about how to do a rotary axis for a while now too.

I was wondering what you're doing for g-code, all of the CAM packages that I found that do indexing operations were in the $1500 range.

Mudshark
Posts: 61
Joined: Fri May 11, 2012 2:14 pm
Location: East Coast Iowa

Re: Rotary Device

Post by Mudshark » Tue Jan 01, 2013 5:13 pm

Thanks IC and DanMc, The chuck is nice for what I am doing but the flexible coupling can be problematic for precision. I have been using the X axis for driving this, I unplug the X steppper and plug this one in. The design has to be in the correct plane. To get the stepping correct, steps/mm = (steps per rev * microsteps)/(diameter * pi) = (400 * 10)/(23.8 * 3.1415) = 53.5 steps per mm. I change this value for my X distance and load it. This design can obviously be improved since I use it for light use but scaling is easy and cheap.
Mudshark
Serial #0054, 2 Watt laser, dual X motors, double Y, ACME Z Axis, G540, Mach 3, rotating axis, needle cutter, Proxxon, 750mm x 375mm, laser cross hairs, auto zero, GT2
Ordbot #201, E3d hot end, bourdon tube feeder.

DanMc
Posts: 257
Joined: Fri Apr 13, 2012 3:34 am

Re: Rotary Device

Post by DanMc » Wed Jan 02, 2013 3:04 am

So, if I understand correctly, you are starting off with a flat design and just adjusting the X steps to correspond to the rotary resolution?

Mudshark
Posts: 61
Joined: Fri May 11, 2012 2:14 pm
Location: East Coast Iowa

Re: Rotary Device

Post by Mudshark » Fri Jan 04, 2013 3:47 pm

Yes, that is correct. For my projects this works fine. I am interested in what others may come up with since I am basically working with hollow cylinders. When routing, I make a decision as to how I want the piece worked, as in a true radial fashion or not. Some of my milling is done without the piece rotating in order to provide a larger internal surface for adhesion. Most of the rotary devices I have seen will utilize a different mount to accomodate items that do not have a center hole. Hope you are able to use this idea.
Mudshark
Serial #0054, 2 Watt laser, dual X motors, double Y, ACME Z Axis, G540, Mach 3, rotating axis, needle cutter, Proxxon, 750mm x 375mm, laser cross hairs, auto zero, GT2
Ordbot #201, E3d hot end, bourdon tube feeder.

PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Re: Rotary Device

Post by PsyKo » Fri Jan 04, 2013 7:06 pm

I'm also working on a rotary device that could be used on the Shapeoko, on multiple axis.
This is simply a rough design. I'm not even sure this is realisitc.
The shaft will be turned using gears or teethed pulley. The stepper motor will be a Nema 17 or 23.

I still have issues to fix such as which CAM software to use, or how to easily align it with the Shapeoko. (And of course, creating a prototype :) )
Attachments
PlateauDiviseurExplode.jpg
PlateauDiviseurExplode.jpg (130.76 KiB) Viewed 6199 times
PlateauDiviseur.jpg
PlateauDiviseur.jpg (98.47 KiB) Viewed 6199 times
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
Goko - Free CNC Control Software - http://www.shapeoko.com/forum/viewtopic ... 380#p44380

Mudshark
Posts: 61
Joined: Fri May 11, 2012 2:14 pm
Location: East Coast Iowa

Re: Rotary Device

Post by Mudshark » Mon Jan 07, 2013 2:51 am

GCode files for rotary device, lotsa room for improvement but a start. I have a 5x10mm flex coupling which I use with a 3/8 aluminum rod for when I don't need the chuck.
cork holder end v2.txt
(4.14 KiB) Downloaded 135 times
cork holder slot v2.txt
(3.62 KiB) Downloaded 128 times
cork holder stepper v2.txt
(4.56 KiB) Downloaded 118 times
Mudshark
Serial #0054, 2 Watt laser, dual X motors, double Y, ACME Z Axis, G540, Mach 3, rotating axis, needle cutter, Proxxon, 750mm x 375mm, laser cross hairs, auto zero, GT2
Ordbot #201, E3d hot end, bourdon tube feeder.

Mudshark
Posts: 61
Joined: Fri May 11, 2012 2:14 pm
Location: East Coast Iowa

Re: Rotary Device

Post by Mudshark » Mon Feb 04, 2013 3:37 pm

Fishing rod is out the door. Rattlesnake fang in foregrip routed with Shapeoko and owner details engraved in rod with laser attachment.
DSCF0654.jpg
Rattlesnake fang in foregrip
DSCF0654.jpg (77.89 KiB) Viewed 5900 times
Attachments
DSCF0658.jpg
Owners details lasered in rod
DSCF0658.jpg (58.84 KiB) Viewed 5900 times
Mudshark
Serial #0054, 2 Watt laser, dual X motors, double Y, ACME Z Axis, G540, Mach 3, rotating axis, needle cutter, Proxxon, 750mm x 375mm, laser cross hairs, auto zero, GT2
Ordbot #201, E3d hot end, bourdon tube feeder.

PaulKruger
Posts: 36
Joined: Wed Feb 26, 2014 7:28 pm

Re: Rotary Device

Post by PaulKruger » Mon Jul 07, 2014 3:30 pm

I can see a possible advantage in incorporating an angle adjustment to "tilt" the rod to engrave on tapered objects such as your bottle corks.
Old fart with more ideas than are useful. CNC Newbie, be gentle.

* Shapeoko 2
* PrintrBot
* Aprox 2.38 tons of tools
* Sears Tractor being modified as a woods buggy
* Bunch of lasers
-------------------------------------
http://www.paulckruger.com

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