Newbie How to measure spindle speed


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Thread: How to measure spindle speed

  1. #1
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    Default How to measure spindle speed

    I’m building a cnc lathe and I have my X and Z axis working, but I now want make it capable of cutting threads.

    1: How do I connect a rotary encoder to mach3, is it done through the breakout board as I don’t seem to have a input option for spindle speed?

    2: Can I use the rotary encoders sold on ebay, see link or will I need to make my own?

    but my main question is, how do I connect the RPM pulses to MACH3?


    Encoder 6mm Shaft 600P/R Incremental Rotary AB phase for Length Measurement | eBay











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  2. #2
    Member DICKEYBIRD's Avatar
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    Default Re: How to measure spindle speed

    Unfortunately Mach3 won't work with an encoder unless you have an external motion controller (Smooth Stepper, CSMIO, etc) If you're using the parallel port, it will only work with a single pulse/rev device, usually opto sensor & slotted disc. I use a CNC4PC C3. Cheap & works well.

    Threading with Mach3 has been challenging for me because my spindle drive wasn't powerful & steady enough for cutting threads in steel over 16mm dia. Had to build a 1:4 reduction belt drive to get it to work.



  3. #3
    Community Moderator Al_The_Man's Avatar
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    Default Re: How to measure spindle speed

    You could also look at Kflop Kmotion.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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How to measure spindle speed

How to measure spindle speed