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IndustryArena Forum > CAM Software > Vectric > z axis creeping
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  1. #1
    Join Date
    Oct 2012

    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.

  2. #2
    Gold Member
    Join Date
    Apr 2004

    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.
    Andrew Werby

  3. #3
    Join Date
    Oct 2012

    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 ...

  4. #4
    Join Date
    Oct 2012

    Re: z axis creeping

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

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