Gallery, Projects and General > The Design Shop
SIEG X2 Y Axis Power Feed Idea
rythmnbls:
--- Quote from: Brass_Machine on August 02, 2015, 09:56:43 PM ---
--- Quote from: MetalMuncher on August 02, 2015, 05:54:27 PM ---...
I thought about trying to put a stepper motor on it with a CNC type controller, but I've never seen that done while also retaining the handwheel, and it would make the handwheel stick out quite a distance, presenting the risk of catching on it while working on other projects near the mill. Utilizing another of the X-Axis style self-contained drive and control unit would save me a lot of research and design. I just need to add it to the Y axis leadscrew somehow.
Any suggestions are welcome. :)
--- End quote ---
Fignoggle sells CNC plans that keep the handwheel where it is.
Eric
--- End quote ---
I completed a conversion with those plans, here's a pic of the Y - Axis handwheel after the work was done.
The sleeve with the graduations is removed from the handwheel and a timing belt pully is bored out to fit over the journal that the sleeve previously occupied. The downside is you loose the ability to measure distance with the handwheel.
Regards.
Steve.
MetalMuncher:
Thanks!
Ha, this is PRECISELY what I have decided to do. The only issue I had left was trying to find the right sized timing pulley to bore out and put on the 20mm journal after removing that collar. But they went one step further, which I was concerned about taking.
When you remove the graduated ring collar, the handwheel casting still protrudes from the back of the handwheel. I have not measured just how much. The ring is only 11mm wide, so I was looking into milling away some of the screw retainer (seen on the right in your photo) for part of the pulley bore to extend over it. I didn't know if turning down the actual handwheel casting part to 20mm would leave it strong enough to still be used as a handwheel. But it seems Fignozzle thought so. Interesting! I may do this instead of my other plan, because it will provide much more support for the bore of the pulley than having that bore protrude partway out into thin air, revolving around the turned down retainer, as I had planned to do.
The only differences between how Fignozzle did it and how I will be doing it is that I'll be sending the belt to the right, due to my Y axis scale mount being close on the left side of the handwheel, and I am going to use one of the Powerfeed Controllers sold typically for the X axis feed on a SIEG X2, such as those from Little Machine Shop or Micro-Mark, to turn the belt. This gives me a plug and play speed controller, overload cutoff, and reversible motor all ready to go. The pulleys I ordered have 8mm bores, so one will fit on the controller output shaft without modification. The other I'll bore out to 20mm to mount as in your photo. I don't really have any interest in going CNC, so this, with my existing X axis power feed and DRO, will be enough for the one-off jobs I do here.
Fignozzle doesn't have nice photos like yours to illustrate how their plans go together, unless of course you buy the plans. :) Your photo is the "proof of concept" I needed to reassure myself this idea I had (even before I learned of Fignozzle) is going to work. :)
Thanks again!
Now comes the hard part..................waiting for the ordered parts to arrive. :D
rythmnbls:
This is the pulley I used http://www.mcmaster.com/#6495k724/=ycqshc I also faced the main flange of the handwheel back a few mm to reduce the overhang of the pulley. Hope this helps.
Good luck with your build.
Regards,
Steve.
MetalMuncher:
Thanks!
MetalMuncher:
--- Quote from: rythmnbls on August 04, 2015, 04:12:24 PM ---
--- Quote from: Brass_Machine on August 02, 2015, 09:56:43 PM ---
--- Quote from: MetalMuncher on August 02, 2015, 05:54:27 PM ---...
I thought about trying to put a stepper motor on it with a CNC type controller, but I've never seen that done while also retaining the handwheel, and it would make the handwheel stick out quite a distance, presenting the risk of catching on it while working on other projects near the mill. Utilizing another of the X-Axis style self-contained drive and control unit would save me a lot of research and design. I just need to add it to the Y axis leadscrew somehow.
Any suggestions are welcome. :)
--- End quote ---
Fignoggle sells CNC plans that keep the handwheel where it is.
Eric
--- End quote ---
I completed a conversion with those plans, here's a pic of the Y - Axis handwheel after the work was done.
The sleeve with the graduations is removed from the handwheel and a timing belt pully is bored out to fit over the journal that the sleeve previously occupied. The downside is you loose the ability to measure distance with the handwheel.
Regards.
Steve.
--- End quote ---
Hey I'm curious, if you don't mind my asking, how you mounted the handwheel to turn down the inner hub on it for the gear? I can think of 2 ways to mount it. Were you able to clamp the outer handwheel ring in your lathe vise, or did you mount the handwheel on a 10mm shaft as a mandrel, and put the shaft in the lathe vise?
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