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  1. #1
    Join Date
    Jan 2012
    Posts
    12

    Question I need to calculate Step per for ROTARY AXIS

    Hi everyone, I need to calculate step per for the 4th axis but I`m very confused with all this numbers
    How can I do that this is the information that I have I would appreciate if you include step by step to learn how to calculate this

    DC Servo Motor Model DCM50207D-1000 (they say that 1000 are 1000 lines)
    V 30.3

    N.M 0.35

    r/m : 2900

    TWO PULLEYS

    Small Pulley Diameter 31.4 - 20 Teeh on shaft of the motor

    large Pulley Diameter 94 - 60 Teeh on shaft of the Chuck

    I would appreciate all your help guys and have a wonderful 2018

    Ivano

  2. #2
    Join Date
    Mar 2003
    Posts
    35538

    Re: I need to calculate Step per for ROTARY AXIS

    1000 *3 = 1000
    But it may be 4000*3 = 12000
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

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

  3. #3
    Join Date
    May 2006
    Posts
    4045

    Re: I need to calculate Step per for ROTARY AXIS

    Hi Ivano,

    It would be helpful to know what kind of system you have and what software you are using.

    But most rotary axes use units of degrees so the answer might be:

    1000 lines/rev x (4 counts/line) x 3 x (1rev/360degrees) = 33.33333333 counts/degree

    You might just try a number and if it doesn't work measure the factor you are off by and divide the number by that factor.

    HTH
    Regards
    TK
    http://dynomotion.com

  4. #4
    Join Date
    Mar 2003
    Posts
    35538

    Re: I need to calculate Step per for ROTARY AXIS

    Oops, I forgot to divide by360°.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

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

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