How fast is your homemade CNC? - Page 6


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

Voters
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  • less than 10 IPM (4.2mm/s)

    45 7.31%
  • 10-50 IPM (4.2 - 21 mm/s)

    182 29.55%
  • 50-100 IPM (21-42 mm/s)

    142 23.05%
  • 100 - 300 IPM (42 - 127 mm/s)

    147 23.86%
  • 300 - 600 IPM (127 - 254 mm/s

    52 8.44%
  • faster than 600 IPM (254 mm/s)

    48 7.79%
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Thread: How fast is your homemade CNC?

  1. #61
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    Default 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.

    [url]https://adapting-camera.blogspot.com[/url]
    [url]https://www.youtube.com/c/AdaptingCamera/videos[/url]


  2. #62
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    Default Re: How fast is your homemade CNC?

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



  3. #63
    Member CitizenOfDreams's Avatar
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    Default 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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    Default 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.


    Speed test when I first put the machine together. 1500rpm, 300ipm



  5. #65
    Member Chris D's Avatar
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    Default 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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    Default 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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    Default 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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    Default 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
    Member Bob La Londe's Avatar
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    Default 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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    Default 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
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    Default 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
    Activation process peteeng's Avatar
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    Default Re: How fast is your homemade CNC?

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



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