Motorized milling machine head

Discussion in 'Machine Modifications' started by Rudy, Oct 23, 2017.

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  1. May 1, 2019 #41

    jdurnya

    jdurnya

    jdurnya

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    Sorry to take this off topic..

    Ron, loved your shop tour on youtube years ago.. would love an update

    Joe
     
  2. May 1, 2019 #42

    Neil Lickfold

    Neil Lickfold

    Neil Lickfold

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    Thanks for the detailed reply, The ball screw really does make sense. On my one it needs a new gib as the one that is in it is bent. When locking it up, the head moves more with the bottom one than the top one. I'm was thinking of adding a centre locking screw , but that is solving the underlying issue. While at it, I'll add some lube channels to the sliding block and link them to a single point oiler, similar to what I did with the X Y oiling and oil grooves.
    Neil
     
  3. May 5, 2019 #43

    ahughes3214

    ahughes3214

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    Thanks Joe, I appreciate the feedback!
     
  4. May 5, 2019 #44

    ahughes3214

    ahughes3214

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    Neil,

    I noted my Z axis gib was also slightly curved. I get the same results as you when tightening either lock down.
    I either tighten them a little bit at a time (go between one and the other slowly tightening) or just end up locking one.
    For the cuts I make, one lock seems to be sufficient.

    Thanks,
    Drew
     
  5. May 21, 2019 #45

    PhilPassmore

    PhilPassmore

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    I may have missed another reply saying the same, but a simple addition that can help a great deal and reduce the work either you, or a motor has to do, is use a 'gas ram' of the type typically employed on car tail gates to assist the lift. Cheaply available on Aliexpress.
     
  6. May 22, 2019 #46

    Jhawk

    Jhawk

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    My grizzly 7055 has the power lift on top of the column connected to the shaft. It’s similar to your mill. An option would be a pneumatic impact wrench like the shop built ones for spindle nut takeoff) on top of the column. You could still use the crank then. It wouldn’t need the air piston to engage it since the shaft on the column is used only to raise and lower the head and it could stay engaged. Or buy the power unit from grizzly.
     

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