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IndustryArena Forum > Events, Product Announcements Etc > Polls > How fast is your homemade CNC?

View Poll Results: How fast can your Homemade CNC cut?

Voters
620. You may not vote on this poll
  • less than 10 IPM (4.2mm/s)

    45 7.26%
  • 10-50 IPM (4.2 - 21 mm/s)

    182 29.35%
  • 50-100 IPM (21-42 mm/s)

    144 23.23%
  • 100 - 300 IPM (42 - 127 mm/s)

    148 23.87%
  • 300 - 600 IPM (127 - 254 mm/s

    52 8.39%
  • faster than 600 IPM (254 mm/s)

    49 7.90%
Page 4 of 5 2345
Results 61 to 80 of 87
  1. #61
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    Apr 2013
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    1851

    Re: How fast is your homemade CNC?

    Quote Originally Posted by linkreincarnate View Post
    what are your specs for that machine?
    The most up to date specs look something like this:

    Footprint (total area it is occupying in the room): 750 x 650mm
    Table height from floor: 890mm
    Y table size: 450 x 300mm
    Weight of Y: 17,5kg
    Working area: 310 x 270mm
    Weight of X-beam: 13,7kg
    Size of the X-beam (height x width): 500 x 540mm
    Size of Z: 350 x 150 mm
    Weight of Z: 8.5kg
    Z clearance from table top: 135mm
    Maximum speed: 8000mm/min
    Maximum acceleration: 700mm/s/s
    Stepper motor data: NEMA23 2.7V/phase, 3A, 1.6uh, 0.9 Ohm/phase
    Stepper motor driver: DQ542MA
    Stepper drivers PSU: 44VDC unregulated supply, based on a thoroidal transformer
    Motion controller: UC300ETH from CNC Drive
    Spindle motor: 400Hz, 24,000 RPM 65mm diameter air cooled 1.5kW spindle
    Spindle motor power supply: Bosch Rexroth EFC 5610 VFD
    Spindle control via Modbus communication
    CNC software: UCCNC from CNC Drive

    I think the above is pretty accurate. I am making changes all the time since it is a DIY CNC of my own design. Note that axis weights are only approximate (parts measured before installation) and the weight does not include the steppers and wiring.

  2. #62

    Re: How fast is your homemade CNC?

    Is it possible above 200 ipm with 5 tpi with a stepper system.

  3. #63
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    Nov 2012
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    789

    Re: How fast is your homemade CNC?

    Quote Originally Posted by bewerbung View Post
    Is it possible above 200 ipm with 5 tpi with a stepper system.
    Absolutely. The rotational speed at 200 ipm would be 1 000 RPM; some steppers are capable to turn almost twice as fast with enough torque left.

  4. #64
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    Apr 2004
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    718

    How fast is your homemade CNC?

    Quote Originally Posted by bewerbung View Post
    Is it possible above 200 ipm with 5 tpi with a stepper system.
    I'm running 5tpi ballscrews about 1200rpm. I clocked them at 1500rpm but backed it down a bit. 270oz-in, gecko201, 56volt PS.

    The ballscrew are ground NSK about 25mm diameter.

    https://youtu.be/bNvEIen90wQ
    Speed test when I first put the machine together. 1500rpm, 300ipm

  5. #65
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    Apr 2005
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    496

    Re: How fast is your homemade CNC?

    Didn't answer the Poll, However, performance is always related to budget. While I can afford much more than I built my router for, I backed off on IPM to meet practical requiements. I don't need to make money on my machine, I need to get accurate parts from it. To me, accuracy is more important than speed. Probably skews the data you are collecting, however, speed isn't everything!!!

    Chris D

  6. #66
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    Mar 2015
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    61

    Re: How fast is your homemade CNC?

    Hi Camera

    some of my machine specs are similar to you.

    NEMA 23 3.5Asteppers, 2 slaved on Y axis. driven by DM556 on 36V. driving 1605 1-start ball screw. but i cant get more than 600mm/minute.

    can you help ??

  7. #67
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    Sep 2006
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    229

    Re: How fast is your homemade CNC?

    I was at 60ipm rapids and 40ipm cutting with my original 10tpi acme machine and HobbyCNC controller. It would sometimes stall cutting and I would back off to 30ipm.

    I switched to 5mm ballscrews and measured 120ipm rapids before stopping the test. They probably could go higher, but I didn't try. I typically cut around 60ipm.

    Steve

  8. #68
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    May 2013
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    475

    Re: How fast is your homemade CNC?

    i converted my taig to 3mm pitch ballscrews and 120IPM is the new maximum. the 8 mm diameter ballscrews are only rated to 300 lb force so i'm scared of breaking them.

  9. #69
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    Oct 2008
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    1955

    Re: How fast is your homemade CNC?

    Quote Originally Posted by Eldon_Joh View Post
    i converted my taig to 3mm pitch ballscrews and 120IPM is the new maximum. the 8 mm diameter ballscrews are only rated to 300 lb force so i'm scared of breaking them.
    300 lbs is a lot for a Taig. It should be fine.
    Bob La Londe
    http://www.YumaBassMan.com

  10. #70
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    122

    Re: How fast is your homemade CNC?

    G0704 with Allen Bradley AC servo motors. 5000rpm on a 5tpi ballscrew gives 1000ipm without a complaint. Z axis get a little low frequency vibration due to the unsupported screw but it is not bad at all. I usually keep the rapids at 100ipm when proofing a part and 600ipm otherwise.

  11. #71

    Join Date
    May 2019
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    7

    Re: How fast is your homemade CNC?

    I'm getting:
    65ipm on Y (2 motors)
    94ipm on X
    ~90ipm on Z

    I am very new to owning a CNC router and want to improve my machine, could use some advice please.

    I want to go faster in the X and Y for cutting foam, can it be as simple as increasing my power supply voltage? I know there are many ways to increase the speed, but upgrading my power supply would be the simplest, biggest bang for my buck right now. However I've been told that since my motors are wired in parallel that doubling my power supply voltage would not help me gain any significant speed, can somebody explain this to me please? I cannot find anything in the forums/internet to confirm this.

    Router specs:

    4x 556oz Nema23 Stepper Motors, Bipolar parallel, 5.0A rated current, 0.6ohm, 3V, 2.5mH
    24V power supply, 12A
    4x M542 Leadshine Drivers, 20-50VDC, 4.2A output max (so i'm not fully utilizing the 5A motor? or the possible 48V input?)
    AKZ250 USB Controller
    1605 C7 ballscrews

    If I swapped my power supply from 24 to 48, would I be able to expect a 10%, 50%, or 90% increase in speed?

    Thanks in advance.

  12. #72
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    Jul 2018
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    1028

    Re: How fast is your homemade CNC?

    Hi Yastron - going to 48V will be a big help in gaining speed. Peter

  13. #73
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    Re: How fast is your homemade CNC?

    Quote Originally Posted by Yastron View Post
    I'm getting:
    65ipm on Y (2 motors)
    94ipm on X
    ~90ipm on Z

    I am very new to owning a CNC router and want to improve my machine, could use some advice please.

    I want to go faster in the X and Y for cutting foam, can it be as simple as increasing my power supply voltage? I know there are many ways to increase the speed, but upgrading my power supply would be the simplest, biggest bang for my buck right now. However I've been told that since my motors are wired in parallel that doubling my power supply voltage would not help me gain any significant speed, can somebody explain this to me please? I cannot find anything in the forums/internet to confirm this.

    Router specs:

    4x 556oz Nema23 Stepper Motors, Bipolar parallel, 5.0A rated current, 0.6ohm, 3V, 2.5mH
    24V power supply, 12A
    4x M542 Leadshine Drivers, 20-50VDC, 4.2A output max (so i'm not fully utilizing the 5A motor? or the possible 48V input?)
    AKZ250 USB Controller
    1605 C7 ballscrews

    If I swapped my power supply from 24 to 48, would I be able to expect a 10%, 50%, or 90% increase in speed?

    Thanks in advance.

    Its a good idea to always have some safety margin in both voltage and current. Many drivers can handle their rated power for a short time, but continuously may damage them.
    Bob La Londe
    http://www.YumaBassMan.com

  14. #74
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    Re: How fast is your homemade CNC?

    P.S. My Hurco KMB1 while not home made was home retrofit by me. At one time I tested that 1000lb saddle and table at upto 450 IPM. LOL. I have it set at 150 now as its more than fast enough for 99% of what I do with that machine. I cut at upto 150IPM with it if the cut will allow.
    Bob La Londe
    http://www.YumaBassMan.com

  15. #75

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    May 2019
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    7

    Re: How fast is your homemade CNC?

    Quote Originally Posted by peteeng View Post
    Hi Yastron - going to 48V will be a big help in gaining speed. Peter
    Quote Originally Posted by Bob La Londe View Post
    Its a good idea to always have some safety margin in both voltage and current. Many drivers can handle their rated power for a short time, but continuously may damage them.
    Thank you for the replies Pete and Bob,

    I went ahead and purchased this 48V regulated SPS:

    https://www.amazon.ca/gp/product/B00...?ie=UTF8&psc=1
    MEAN WELL SE-600-48 AC to DC Power Supply, Single Output, 48V, 12.5 Amp, 600W, 1.5"

    and will try running it at ~42 or ~44V to give some safety margin from the 50VDC limit of my stepper drivers.

    I may also look at changing my 1605 ballscrews for 1610 ballscrews if I still want more speed after the power supply upgrade.
    I regularly do diamond-drag engraving on aluminum (at 20ipm), and am curious how much the coarser pitch would affect my engraved text quality. Any thoughts on this?

    I will post my speed increase results after I hook up my new power supply and do some testing.

  16. #76
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    Jan 2014
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    122

    Re: How fast is your homemade CNC?

    Quote Originally Posted by Bob La Londe View Post
    P.S. My Hurco KMB1 while not home made was home retrofit by me. At one time I tested that 1000lb saddle and table at upto 450 IPM. LOL. I have it set at 150 now as its more than fast enough for 99% of what I do with that machine. I cut at upto 150IPM with it if the cut will allow.
    My benchtop with AC servos hits 1000ipm with some crazy accelerations no problem. Since I do mostly 1 offs (really never more than 10), my Rapid override is always set to 5%. Seems kinda silly

  17. #77
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    Re: How fast is your homemade CNC?

    Quote Originally Posted by mcardoso View Post
    My benchtop with AC servos hits 1000ipm with some crazy accelerations no problem. Since I do mostly 1 offs (really never more than 10), my Rapid override is always set to 5%. Seems kinda silly
    Hey, it's better to have it and not need it than the other way around. :-)

  18. #78

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    May 2019
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    7

    Re: How fast is your homemade CNC?

    Upgrading 24V -> 48V (running it at 42.7V) got me pretty much double the speed, from 94 -> 180 on X, and 63 -> 120 on Y, and 86 -> 150 on Z. Very exciting stuff. Now how do I get it to 1000 ??
    I doubled all the accelerations to X20/Y12/Z18, and I didn't yet push the limits of the tuning... I stalled the X at 200 ipm and just left it at 180, then estimated the Y and Z speeds from my results on X.

    Thanks Pete/Bob for the encouragement, very pleased with the speed.

  19. #79
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    1955

    Re: How fast is your homemade CNC?

    Quote Originally Posted by mcardoso View Post
    My benchtop with AC servos hits 1000ipm with some crazy accelerations no problem. Since I do mostly 1 offs (really never more than 10), my Rapid override is always set to 5%. Seems kinda silly
    Does it have over a thousand pounds of dead mass riding on the Y axis? LOL
    Bob La Londe
    http://www.YumaBassMan.com

  20. #80
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    Re: How fast is your homemade CNC?

    Quote Originally Posted by Bob La Londe View Post
    Does it have over a thousand pounds of dead mass riding on the Y axis? LOL


    I wish It would be a heck of a lot more rigid than it is.

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