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  1. #1
    Join Date
    Aug 2019
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    Revesby - Sydney Australia
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    Default "Automated" stop for a lathe

    When someone can't be bothered taking the control panel off to wire an extra e-Stop micro-switch in:

    IMG_2073.jpg IMG_2074.jpg IMG_2071.jpg IMG_2072.jpg





    Video link, which might not work: https://photos.app.goo.gl/oGcbKZ4Jpuz1KNwKA

  2. #2
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
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    Perth
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    7,182

    Default

    Ingenious
    BUT
    Just playing devil's advocate for a bit

    The whole thing looks like it might get in the way generally, and more importantly get in the way of a real emergency stop.

    I assume it's compressed air driven? but what happens if (for whatever reasons) there's no air?
    eg Forgot to check if compressor is on, or valves open, or for some reason compressor has stopped working. etc
    Of course a daily test is in order, but in between testing and later in the day . . . . . .?

  3. #3
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Guys,

    Someone has obviously spent a lot of time and effort to build that contraption without giving it a lot of thought ! It surely would have been safer to have removed the panel and extended the wiring to a remote switch, without blocking access to the Estop.
    Best Regards:
    Baron J.

  4. #4
    Join Date
    Aug 2019
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    Revesby - Sydney Australia
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    Default

    Bob: Yes, air driven. The air line snaking along the floor was stolen from the blow gun of a CNC mill.
    He usually has air on when using any machines, but yes, mistakes can happen –
    I'd be testing the air valve and actuator each time I loaded new stock into the chuck.

    I think bashing the Aluminium box section forward would still hit the e-Stop.


    Baron: Only took him about 45 minutes, and that included two trips walking down to my unit; to get some M4 fasteners, and to get an 1/8" to 1/4" BSP reducer (and to have a Friday afternoon beer)!




    I proposed an electrical micro-switch, but he already had the air valve and actuator, and wanted to try them.

  5. #5
    Join Date
    Aug 2019
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    Revesby - Sydney Australia
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    Default

    He made it even simpler; no air feed required, it now just knocks the feed select lever off:

    https://photos.app.goo.gl/6TcXfLBtSPHFe9XU9

    https://photos.app.goo.gl/HWtK24vkg6yE2MbD7

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