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Thread: Mach 3 Spindle Speed Table Feed Calibration/Synchronization

  1. #1
    Registered bill south's Avatar
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    Mach 3 Spindle Speed Table Feed Calibration/Synchronization

    Damn, I hope I spelled that right!
    I have a benchtop mill running mach 3 with a Hitachi 200 VFD, 3 phase motor (2hp) and a cnc4pc speed control card. I'm using 0 - 10 volts to the VFD and have a tach circuit installed on the spindle which is being reported to Mach 3.
    Is there a way to set up the software to allow mach to monitor the spindle speed and slow down feed if it starts to bog down????? My equipment configuration tends to break a bunch of mill tools due to the motor bogging down during a cut. Very frustrating and expensive.
    Thoughts anyone?????
    Bill
    billyjack
    Helicopter def. = Bunch of spare parts flying in close formation! USAF 1974 ;>)


  2. #2
    Community Moderator ger21's Avatar
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    You may be able to use the macropump (which runs a macro 10 times a second, I think) to read the rpmand adjust the FRO when the rpm drops. Not positive, though. But you'll need to write a macro to do it.
    Gerry

    Mach3 2010 Screenset
    http://home.comcast.net/~cncwoodworker/2010.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


  3. #3
    Registered bill south's Avatar
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    Thanks Gerry!
    Sounds like a fun project. I'll have to put it on the list though! Too many irons in the fire at the moment!

    Bill
    billyjack
    Helicopter def. = Bunch of spare parts flying in close formation! USAF 1974 ;>)


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