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VTX1800 Assistance needed 4th axis 01-17-2025, 08:21 PM
datac Re: Assistance needed 4th axis 01-18-2025, 03:16 PM
VTX1800 Re: Assistance needed 4th axis 01-18-2025, 04:40 PM
reg.miller Re: Assistance needed 4th axis 06-09-2025, 08:57 AM
VTX1800 Re: Assistance needed 4th axis 06-12-2025, 03:18 PM
VTX1800 Re: Assistance needed 4th axis 01-18-2025, 05:01 PM
datac Re: Assistance needed 4th axis 01-18-2025, 08:49 PM
VTX1800 Re: Assistance needed 4th axis 01-18-2025, 09:23 PM
VTX1800 Re: Assistance needed 4th axis 01-18-2025, 10:31 PM
datac Re: Assistance needed 4th axis 01-19-2025, 05:27 PM
VTX1800 Re: Assistance needed 4th axis 01-19-2025, 07:24 PM
  1. #1
    Join Date
    Nov 2013
    Posts
    110

    Assistance needed 4th axis

    Guys,
    I have been away for several years.
    My wife almost died from covid pneumonia over 3 years ago.
    She still needs my care but she is getting stronger.
    We made it to out 50th wedding anniversary this summer. Praise God.

    So I am getting back to the CNC router with Dynomotion electronics.
    Vectric VCarve Pro 11.5.
    Vectric has some compelling videos about wrapping the rotary toolpath around the Y axis.

    I have purchased a new headstock and tailstock from a mini lathe. Picture attached.
    Is it possible to use the existing Y axis as the rotary 4th axis and wrap the toolpath?
    I was planning to connect the stepper motor cable to the Y axis drive output.
    Does this require a new program to be downloaded the the controller or does the wrapping post processor make the calculations using the existing program?
    If a program has to switch and flashed every time this would be tedious between rotary and normal linear configurations.

    I am willing to invest in an additional driver board for this 4th axis if it would be simpler.

    I would really appreciate some guidance in accomplishing this.
    I need to attend to my wife 24/7 so this activity would keep me busy at home.

    The headstock has a 72 tooth large gear belt driven by a small 18 tooth gear on the stepper motor shaft.
    The stepper motor steps per revolution and gear ratio parameters need to be used as well.
    Are these parameters input to a rotary post processor?
    If someone has already done this I would appreciate a comprehensive procedure or instructions.
    I have questions regarding how the controller knows or calculates the angular steps.
    Please advise.
    I appreciate the effort in advance.

    Best regards,
    Ted Sears
    Attached Thumbnails Attached Thumbnails 4th axis rotary setup.jpg  

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