New Machine Build 18x18 Linear Rail Tormach Build. - Page 3


Page 3 of 50 FirstFirst 12345613 ... LastLast
Results 41 to 60 of 995

Thread: 18x18 Linear Rail Tormach Build.

  1. #41
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    About to order the 570 oz steppers, now just debating on the power supply I need.
    Suggestions?

    Here is what I have on my X2:
    70V 800W 5V 12V Power Supply CNC Mill Servo Step Motor | eBay



  2. #42
    Member CROSSHATCH's Avatar
    Join Date
    Sep 2006
    Location
    US
    Posts
    1738
    Downloads
    0
    Uploads
    0

    Default

    Hey man, great build.

    Love how you went with the Tormach spindle because I have been contemplating doing the same if I go the "build my own machine" route. The options for the ATC are already pretty open with that spindle. Very interesting build.

    BTW, I'm in Jersey...whats your location?

    -Jason



  3. #43
    Registered amishx64's Avatar
    Join Date
    Jul 2008
    Location
    USA
    Posts
    390
    Downloads
    0
    Uploads
    0

    Default

    Quote Originally Posted by nateman_doo View Post
    About to order the 570 oz steppers, now just debating on the power supply I need.
    Suggestions?

    Here is what I have on my X2:
    70V 800W 5V 12V Power Supply CNC Mill Servo Step Motor | eBay

    I don't know what drivers you are using, but I would go off the guidelines for Geckos. I pulled this from Yahoo! Groups Mariss is the lead engineer at Gecko IIRC.

    I think something got mangled in the reply. The 4 to 20 supply voltage
    rule applies in either case (round or square). The power supply current
    rule is 2/3 of the motor's rated current for round motors, equal to the
    motor's rated current for square motors.

    Mariss

    --- In geckodrive@***********.com, "jerryflyguy" wrote:
    >
    > Mariss I've been talking to Mr Campbell from Campbelldesigns.com, and
    > figuring out my power supply requirments. He mentioned that your 4 to
    > 25 times the rated stepper voltage formula, actually only applied to
    > the old round motor's. He also mentioned you were planning to come
    out
    > with a new number/formula for the new, more effecient sqr motor's.
    I'm
    > just wondering if you could pass on what that number should be? I'm
    > looking at running Nema 34's w/ 2.3 v and 6.3A per phase. [four in
    > total] also I remember reading someplace that a person should total
    > their needed current and then build the power supply to meet 65% of
    > that number.. is this correct or is my memory giving me fits??
    >
    > Thanks!
    > Jarrett Johnson




  4. #44
    Member
    Join Date
    Feb 2006
    Location
    USA
    Posts
    7063
    Downloads
    0
    Uploads
    0

    Default

    The correct supply voltage for any stepper is 32 times the square root of the winding inductance, in milliHenrys. Any lower, and you'll lose torque at higher speeds, as the coils will never saturate. Any more, and you'll just get the motors hotter. Supply current should be no less than 2/3 the motors rated current in the chosen connection mode.

    Regards,
    Ray L.



  5. #45
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    I live in morris county.

    I planned to use geko drivers as well. Same as I used for my X2 build. They work nicely.



  6. #46
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    Quote Originally Posted by HimyKabibble View Post
    The correct supply voltage for any stepper is 32 times the square root of the winding inductance, in milliHenrys. Any lower, and you'll lose torque at higher speeds, as the coils will never saturate. Any more, and you'll just get the motors hotter. Supply current should be no less than 2/3 the motors rated current in the chosen connection mode.

    Regards,
    Ray L.
    I never even heard of that. Lean something new every day.



  7. #47
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    2.5mH.
    I calculate 50V?
    According to my rough calculations. Sound about right?



  8. #48
    Registered amishx64's Avatar
    Join Date
    Jul 2008
    Location
    USA
    Posts
    390
    Downloads
    0
    Uploads
    0

    Default

    Quote Originally Posted by nateman_doo View Post
    2.5mH.
    I calculate 50V?
    According to my rough calculations. Sound about right?
    50V looks right to me.



  9. #49
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    I guess thats why my X2 motors get really hot. Only when I use the coolant and it splashes on the motor to cool it down.



  10. #50
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    I do like the style i linked because it has both a 12V and a 5V power supplies for the break out board.



  11. #51
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    56V 11A 5V 12V Robotic Motion Control Power Supply Fuse | eBay

    Guess this is the closest to 50V with the additional 5V & 12V sections



  12. #52
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    56V 11A 5V 12V Robotic Motion Control Power Supply Fuse | eBay

    Guess this is the closest to 50V with the additional 5V & 12V sections



  13. #53
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    Merry Christmas everyone!!



  14. #54
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    Took the day off, so I will try and get some work done bolting the bottom plate to the I-beams.



  15. #55
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    I beams bolted. daily progress is nice.









  16. #56
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    On a side note...

    Having some problems with one of my X2 steppers. It sounds like its spinning, and the shaft doesn't move. Seems like the slightest bit of resistance won't allow it to operate. If i slightly tighten the gibs, it just makes the spinning noise, but doesn't move. if I help the table along there is no problem. They are about 3 years old with some heavy use out of them. Does it sound like time for a new motor?



  17. #57
    Registered
    Join Date
    Jun 2011
    Location
    USA
    Posts
    279
    Downloads
    0
    Uploads
    0

    Default coupling loose

    Sure the coupling hasn't worked loose from the motor shaft?

    Build is coming along nicely!!
    Chris



  18. #58
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    Quote Originally Posted by cjsamples View Post
    Sure the coupling hasn't worked loose from the motor shaft?

    Build is coming along nicely!!
    Chris
    nope, I can see the coupler not moving either. Plus I can see the 1/4" rear shaft not moving either. Just makes the spinning noise, and when I help it along it moves.

    I have had it with dovetails. Once I finish this build, i will re-re-rebuild my X2 and convert it to linear rails as well.



  19. #59
    Registered amishx64's Avatar
    Join Date
    Jul 2008
    Location
    USA
    Posts
    390
    Downloads
    0
    Uploads
    0

    Default

    Try turning the acceleration WAY down.



  20. #60
    Member nateman_doo's Avatar
    Join Date
    Jun 2010
    Location
    USA
    Posts
    1414
    Downloads
    0
    Uploads
    0

    Default

    I will try anything at this point. i switched to another used motor as well, same problem.



Page 3 of 50 FirstFirst 12345613 ... LastLast

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

18x18 Linear Rail Tormach Build.

18x18 Linear Rail Tormach Build.