z axis creeping


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Thread: z axis creeping

  1. #1
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    Default z axis creeping

    Hi. The Z motor (dc servo) does not hold the position while cutting.
    I noticed on a belt that the motor is retracting during operation and as a result, the axis is raised a few mm in the end.
    ?

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    Last edited by stonix; 06-23-2019 at 12:29 PM.


  2. #2
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    Default Re: z axis creeping

    Could the encoder be loose on the motor shaft? If it was moving relative to the motor, the servo system would rotate the motor to compensate.

    [FONT=Verdana]Andrew Werby[/FONT]
    [URL="http://www.computersculpture.com/"]Website[/URL]


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    Default Re: z axis creeping

    ok. i will check. (there are a lot of vibratons) . It is symptomatic that the Z axis always creeps UP.

    Spindle cable is separated ....
    I grounded the "servo control casing", but not the machine ...

    Last edited by stonix; 06-23-2019 at 01:02 PM.


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    Default Re: z axis creeping

    Solved !
    the encoder was slipping in the motor shaft. ccc
    Thanx to awerby :-)



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z axis creeping

z axis creeping