bought a used 48" X 48" X 5" used router table


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Thread: bought a used 48" X 48" X 5" used router table

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    Registered travis_farmer's Avatar
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    Smile bought a used 48" X 48" X 5" used router table

    I realize this is the DIY part of the forum, but i thought i would post a quick note here as that is where i got so much research help in the past.

    it is a Techno/Isel table, 48" X 48" X 5" working area. it has servos, but no drivers, and a Perske VS 60.11-2 5HP, 3-phase spindle. no controllers, or drivers, but i bought it as a fixer-upper to get me going strong. right now it is under a tarp on the trailer still, but when i make room for it, i will be able to take detailed pictures, and research parts for it. overall, i am pleased with it, and it only cost me $500. (i think it is a good deal...)
    Anyway, as i learn more about it, i will post in the correct forum about it. or is it considered DIY to rebuild a CNC router?

    Anyway, thanks for all the help in the recent past, and i look forward to getting this machine up and going.

    ~Travis

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    rebuilding a 48" X 48" X 5" (work area) router table.
    ReBuild coming along good.


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    Registered Jim Dawson's Avatar
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    Default Re: bought a used 48" X 48" X 5" used router table

    Looking forward to seeing the pictures. Sounds like a fun project. For $500, if it's in reasonably good mechanical shape I would say you got a deal.



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    Default Re: bought a used 48" X 48" X 5" used router table

    That is one hell of a bargain.

    Updating the electronics, effectively replacing all the missing stuff, will take some time and money but there are few well designed frames that you could do for $500.



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    Default Re: bought a used 48" X 48" X 5" used router table

    It would be a good deal for the spindle alone!



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    Default Re: bought a used 48" X 48" X 5" used router table

    I took a few pics to show my new (to me) router.

    it is still on the trailer, and yes, i know it is perched rather scary for transport. that is what happens when you know the frame width of the CNC is 5 foot, and you foolishly think a 5 foot wide trailer, is actually as advertised.

    so anyway, it currently sits under a heavy duty tarp while i make room for it. but it is home

    ~Travis

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    rebuilding a 48" X 48" X 5" (work area) router table.
    ReBuild coming along good.


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    Default Re: bought a used 48" X 48" X 5" used router table

    just for reference, what size stepper do you all think i would be looking at? just a rough idea. right now, it has brushed DC servo motors, though the encoders are floppy, so i doubt i will want to re-use them.

    the spindle, being 5HP, 3-phase. i assume i need something like a VFD unit? admitedly, i know very little about 3-phase motors.

    ~Travis

    rebuilding a 48" X 48" X 5" (work area) router table.
    ReBuild coming along good.


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    Registered Jim Dawson's Avatar
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    Default Re: bought a used 48" X 48" X 5" used router table

    Why not use the existing DC servo motors? The drives are only slightly more expensive than the cheapest stepper drives. Not sure what you mean by the encoders being ''floppy''

    Yes, you will need a VFD to run the spindle. If you don't have 3 phase in your shop, you will need a 5hp VFD that will accept a single phase input.



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    Default Re: bought a used 48" X 48" X 5" used router table

    You should be able to run those servos with Gecko G320; just need to figure out rated voltage for a PSU. Don't know if the encoders are compatible, but you can replace them.



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    Default Re: bought a used 48" X 48" X 5" used router table

    the problem i have with the servos on it are that i can't read any of the info on the specifications sticker. so i know nothing about them, other than that they are DC brushed.

    i looked up the Gecko G320, and they are outside of my price range for now. i may have to use a cheap Chinese driver, and upgrade later.

    how do DC brushed servos take a "step" without coasting past? also, how do they hold position?

    ~Travis

    rebuilding a 48" X 48" X 5" (work area) router table.
    ReBuild coming along good.


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    Default

    Quote Originally Posted by travis_farmer View Post
    the problem i have with the servos on it are that i can't read any of the info on the specifications sticker. so i know nothing about them, other than that they are DC brushed.

    i looked up the Gecko G320, and they are outside of my price range for now. i may have to use a cheap Chinese driver, and upgrade later.

    how do DC brushed servos take a "step" without coasting past? also, how do they hold position?

    ~Travis
    Only things I foresee is that the steppers may not mount to the servo mounts, and their shafts to the couplings. So by the time you buy new couplings and motor mounts, you could have just gotten the three drives.



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    Default Re: bought a used 48" X 48" X 5" used router table

    how do DC brushed servos take a "step" without coasting past? also, how do they hold position?
    They have encoders on them. The encoder tells the drive where the shaft is, and the drive holds it there.

    Gerry

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    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Default Re: bought a used 48" X 48" X 5" used router table

    We can probably help figure out what the motor specifications are, should be pretty easy to figure out. It looks like Techno/Ise may still be in business, with a US phone #. At least the web site mostly works with a few broken links.

    Brushed DC Servos don't really take a step, rather they are told by the controller to rotate at some speed, and the controller keeps track of the position by encoder counts. When the commanded position, in encoder counts, is reached the motor is locked in position by the controller/drive. BTW, this is not a totally correct explanation of how it works but close enough for right now.



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