How fast is your homemade CNC? - Page 6


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

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  • less than 10 IPM (4.2mm/s)

    45 7.38%
  • 10-50 IPM (4.2 - 21 mm/s)

    182 29.84%
  • 50-100 IPM (21-42 mm/s)

    142 23.28%
  • 100 - 300 IPM (42 - 127 mm/s)

    144 23.61%
  • 300 - 600 IPM (127 - 254 mm/s

    52 8.52%
  • faster than 600 IPM (254 mm/s)

    45 7.38%
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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.



  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
    Registered 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
    Registered 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
    Gold 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


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