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Thread: Concrete VMC

  1. #157
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    Default Re: Concrete VMC

    Fill the gap once i trammed the head with the gub screws.
    No special projects in mind for this machine its an replacement / upgrade for my current g0704 mill. I use the mill mostly for hobby purpose and some small jobs. Mostly robot / battlebots related machining.



  2. #158
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    Default Re: Concrete VMC

    It would be interesting to see a couple of your Battlebots.

    Retired Master Electrician, HVAC/R Commercial. FLA Saturn 2 4x4 CNC Router Mach4 Kimber 1911 45ACP


  3. #159
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    Default Re: Concrete VMC

    Quote Originally Posted by wmgeorge View Post
    It would be interesting to see a couple of your Battlebots.

    Here is one in post #7
    https://www.cnczone.com/forums/verti...ml#post2054102



  4. #160
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    Default Re: Concrete VMC

    I have been on last year series (2018) with team reality a dutch team. I normally build the smaller machines like max 13.6 Kg



    Im the second guy from the left.

    This machine i have build last year with my own team for a competition in Shanghai its a air powered flipper robot to shoot your opponent out of the arena. Its a complete custom build pneumatic system the only thing thats a factory part is the high pressure air regulator to transform the 200bar to only 30bar weapon pressure.








    All parts have been machined on my 3 axis g0704 and with an manual lathe.

    Stef



  5. #161
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    Default Re: Concrete VMC

    Thanks for showing us those. The parts look beautiful!



  6. #162
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    Default Re: Concrete VMC

    I'm impressed, beautiful work! Its really more like Art.

    Last edited by wmgeorge; 07-19-2019 at 05:26 PM.
    Retired Master Electrician, HVAC/R Commercial. FLA Saturn 2 4x4 CNC Router Mach4 Kimber 1911 45ACP


  7. #163
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    Default Re: Concrete VMC

    Nice work!

    Warning: DIY CNC may cause extreme hair loss due to you pulling your hair out.


  8. #164
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    Default Re: Concrete VMC

    Spend this weekend on machining the main block of the head. The head now has been mounted on the column and i have tested to see if the servo is strong enough to move the head without counterweight. Seems the servo didnt had any problem with it.
    I also tested it with the servo on top so there should be a weight of around 110kg on the ball screw. Still no problem to do rapids at 15m/min.
    Next step is making the mounting bracket for the spindle and the atc cylinder and mounting the pullyes to the spindle. Then i should be able to do some test cuts (without squaring anything).

    More pictures of projects i have done and higher quality pictures can be found at: Powered by jGallery2-stable

    Stef





















  9. #165
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    Default Re: Concrete VMC

    is that from me or the ballscrew is making strange noise at the ends?? if yes I guess you have an alignment problem and when the nut gets closer to the fixed blocks it struggles to move ant makes the noise, also will wear the ballscrew...

    looking great otherwise!

    Last edited by vakeiros; 07-24-2019 at 02:58 PM.


  10. #166
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    Default Re: Concrete VMC

    Yes im aware of that, I guess the length of the ball nut bracket isn't right.
    Today i recived a pneumatic cylinder to act as counterweight and ordered a buffer air tank.

    Stef



  11. #167
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    Default Re: Concrete VMC

    great, BTW can you show me the air tank buffer you ordered? I already have my air cylinder for the counterweight, also I've here an old 20l CO2 bottle that I'm thinking of using to the tank buffer... might be overkill but it's here already at 0 cost....



  12. #168
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    Default Re: Concrete VMC

    I ordered a 20 liter truck air tank that they use for the pneumatic brakes. The capacity of my air cylinder is about 2 liter and have a tank that will be 10 times bigger. There will be a pressure rise but not that big.
    Tank will be guarded with a pressure switch that will set an alarm on the controls if air is leaking away.

    https://www.logistiekdirect.be/lucht...er-o276x414-mm

    stef



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