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  1. Thread: 2 motors - 1 VFD

    by sm3
    Replies
    16
    Views
    1,305

    Re: 2 motors - 1 VFD

    Thank you Al_The_Man!
  2. Thread: 2 motors - 1 VFD

    by sm3
    Replies
    16
    Views
    1,305

    Re: 2 motors - 1 VFD

    right. that was pretty much I have said. I tried at the beginning 2 stepper motors, but at the higher speed they are loosing torque and so I started thinking of AC motors.
    My question is: is it...
  3. Thread: 2 motors - 1 VFD

    by sm3
    Replies
    16
    Views
    1,305

    Re: 2 motors - 1 VFD

    does not answer my question, but thank you.

    :)
  4. Thread: 2 motors - 1 VFD

    by sm3
    Replies
    16
    Views
    1,305

    Re: 2 motors - 1 VFD

    Hi dazp1976,
    steppers run on DC, so I don't think such a thing as "stepper phase" exists.
    I used nema 23 motors (I actually tried other sizes, increasing them and the largest I used lastly was...
  5. Thread: 2 motors - 1 VFD

    by sm3
    Replies
    16
    Views
    1,305

    Re: 2 motors - 1 VFD

    Hi machinehop5,
    I need to motors running with speed about 2000 RPM (maybe higher in the future - I don't know yet. Have to try it first) and I need motors to keep torque value.
    I used steppers...
  6. Thread: 2 motors - 1 VFD

    by sm3
    Replies
    16
    Views
    1,305

    Re: 2 motors - 1 VFD

    Hi All_The_Man!
    Thank you for replying.
    Can you share, please, how to implement it? I need both motors be connected to one VFD, but have one the motors running in reverse - like you said - Railway...
  7. Thread: 2 motors - 1 VFD

    by sm3
    Replies
    16
    Views
    1,305

    Re: 2 motors - 1 VFD

    Hi Algirdas,
    Thank you for replying. What is the difference between spindle and motor?
    I am thinking to equalize the axial load. Almost eliminate it by using cross-roller bearings at front of...
  8. Thread: 2 motors - 1 VFD

    by sm3
    Replies
    16
    Views
    1,305

    2 motors - 1 VFD

    Hello Everyone,
    I am building a CNC machine. It is not usual/well known machine and I need in it 2 spindles running with exactly the same speed and other parameters but in opposite direction to each...
  9. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Re: Y-axis adjustment

    yep! Thank you!
    but again - how do you tune axis on linuxcnc? Am I missing something? Do you have any special tool for it? technique? Or, perhaps I did not see something in linuxcnc and my complaint...
  10. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Re: Y-axis adjustment

    :) )
    BTW, I think, I could be fixed at the very beginning when I was tested each axis. However, I found it kinda difficult, because the way it is implemented in linuxcnc.
    you can choose for testing...
  11. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Re: Y-axis adjustment

    Do you think, DJ, it would be better than adjusting ballscrew pitch number?
    I am planning to check it again tomorrow and cut yet another part from the same file, to see how stable this change. I...
  12. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Re: Y-axis adjustment

    Hello Everyone!
    just finished cutting yet another piece and it came out much better.
    So, I was cutting a square with side 10mm. out of machine it came out 10.1 x 10.07.
    it is not perfect, but main...
  13. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Re: Y-axis adjustment

    Thank you DJ - that sounds promising and probably is exactly what I need. Lemme try it.
  14. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Re: Y-axis adjustment

    I am using program I have written myself to generate G-code. It is pretty specific because of my specific needs.
    My machine is not usual one - it cuts out element of any shape out of hard/brittle...
  15. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Re: Y-axis adjustment

    no, I haven't. to make it all run in opposite direction I will need to change everything - model file I have with all its lines in it, so, the program I have, which reads this model and generates...
  16. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Re: Y-axis adjustment

    you're right - I did not mention it. the reason being is because there is nothing unusual here -table is horizontal. My theory only is that - this machine has been built in my garage. and of course...
  17. Thread: Y-axis adjustment

    by sm3
    Replies
    15
    Views
    1,985

    Y-axis adjustment

    Hello CNCZoners!
    I have build CNC machine to elements of mosaic. I am tuning it now, however I bump into problem I am unable to solve so far.
    pieces I am cutting on it on Y axis are consistently...
  18. Replies
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    1,115

    custom shaft for my CNC

    Hello Everyone!
    I need custom shaft for CNC machine I am building.
    Can anyone, please, help to manufacture it for me?
    I've been searching for shop to manufacture it for a while without luck so...
  19. Replies
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    900

    custom shaft for my CNC

    Hello Everyone!
    I am building CNC machine and need custom shaft to be made. I don't have lathe and have only small milling machine. I've been trying to manufacture shaft on it, but not happy with...
  20. Replies
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    2,049

    Re: looping the movement

    Hi Jim and All.
    latest news - after several days of communication efforts, I was able to obtain from Sainsmart wiring diagram for 1 Axis Programmable Controller.
    I am posting it here, as I suspect,...
  21. Replies
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    2,049

    Re: looping the movement

    also, Jim, as I understand it: from motor driver pul (-) and dir (-) go to gnd on the motion controller - is that sound correct?
  22. Replies
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    2,049

    Re: looping the movement

    Thank you so much, Jim!
    so... do I need to add three resistors? (according to this diagram).
    and, yes, controller does include mini CD... and it contains one file - manual of controller in...
  23. Replies
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    2,049

    Re: looping the movement

    Hey Jim,
    I got this chinese 1 axis motion controller, DQ860MA driver (wantaimotor) and nema 34 motor ( wantaimotor, 85BYGH450D-008). the manual for 1 axis controller is in chinglish. there is no...
  24. Replies
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    Re: looping the movement

    awesome!
    exactly what I need.

    Thank you, Jim!
  25. Replies
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    2,049

    Re: looping the movement

    thank you, Jim!
    looking at this, my understanding this controller won't be able to change the direction, so, I will need to add into circuit a polarity switch. Am I wrong or not?

    thank you.
  26. Replies
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    2,049

    looping the movement

    Hello Everyone,
    I need make drive going to one direction up to certain point. as soon it reaches that point I need it go in opposite direction with the same speed it had before.
    so, basically, as I...
  27. Replies
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    Re: back&forward loop motion

    thank you Jim.
    though your suggestion look very nice, but unfortunately their software runs on windows only :( - I am using linuxcnc.
    huge thank you anyway!

    speaking of...
  28. Replies
    5
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    224

    Re: back&forward loop motion

    Hi Jim,
    Thank you for quick reply :)

    1. not very fast. actually rather pretty slow.
    2.I am planning to use ballscrew drive
    3. motion is linear
    4.mass? it is in design stage, but I anticipate...
  29. Replies
    5
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    224

    back&forward loop motion

    Hello Everyone,
    I am looking here for suggestions on how to make linear drive working continuously. so, I need it to go forward, when it reaches the limit, it should immediately go back till it...
  30. Thread: where to start

    by sm3
    Replies
    0
    Views
    142

    where to start

    Hello CNCZonners,
    I just joined the club. and I am absolutely new to cnc machining.
    I have couple of questions.
    1. can anyone please suggest a place to learn cnc programming (online preferable as...
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