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  1. #1
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    Nov 2010
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    216

    RF45 Clone with full enclosure, coolant, and tool changer

    Starting a thread to document my build of my RF45 Clone machine that will eventually have a full enclosure including a stainless chip pan and stainless way covers, coolant, and some kind of a tool change system.

    This is my only mill so ive been assembling and diassembling it for milling and test fitting. The ballscrews for X & Y are 5/8" (SFU1605) and the Z will be 3/4" (SFU2005). These were purchased straight from china. Im using gecko 201 drivers

    The machine im working with:


    Parts starting to come in. All parts in this picture from Keling. 1200oz in steppers for X and Y and 2830 oz in for the Z. Beastly


    Electronics Enclosure


    More electronics. Also, touchscreen monitor


    Starting to mount the electronics on the cabinet board


    X&Y Ballscrews and Mounts


    Building Ballnut Mounts


    Finished X ballnut mount


    Finished ballnuts mounts and adapters plate. I plan to make nicer versions once the machine is CNC'd


    Screws mocked up. Nice factory hole misalignment


  2. #2
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    Next up is a full tear down and paint job, designing the Z-mounts and ordering the Z-ballscrew, as well as the enclosure lower frame fabrication. Here is the solidworks rendering of the enclosure. The lower half is made of a 1.25"x1.25" steel tubing frame. A stainless steel chip pan gets dropped in from the top (bolted down). Then the top of the enclosure is going to be laser cut and bent 16 gauge steel painted to match the soon to be paintjob on the mill. Im still trying to decide on a shade of white. Also trying to figure out what I want to do for the door sliding mechanism on the enclosure.

    My options on the door so far are:
    - One door sliding from the inside, tracks hidden, but hole needed to be cut on the side like a haas mini mill
    - One door sliding from the outside, tracks visible
    - Two doors sliding from the inside like a Fadal

    Here are the stainless way covers coming from Petefromtn (thanks!)
    PetefromTn's Channel - YouTube

    And here is the enclosure thus far. The door on the side is to access the underbelly where I will have the coolant resovoir. Purple is the stainless chip tray:


  3. #3
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    Electronics cabinet done with touchscreen. This cabinet will be mounted on the back of the enclosure and I will have a control panel in the front with the monitor and e-stop, etc. Will be adding a VFD, and a relay board for coolant and spindle control later in the build.




  4. #4
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    As I was finishing the ballscrew mounts for the X and Y axis, my stock Z-nut seems to have stripped out. So the plan now is to strip the machine down, give it a paint job, CAD up my Z-mounts and send the designs out to have someone build them for me. Ill order the Z-screw to the proper length after I have the machine stripped apart. Ill also be selling off the factory mill stand and power up/down Z-feed if anyone is interested in these.

  5. #5
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    I think im going to go with the single slide out door. Heres what I have CAD'd so far..



  6. #6
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    Mar 2011
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    Looks great! What do you mean the Z screw stripped out? on the manual machine or the part you were making?
    Kelly
    www.finescale360.com

  7. #7
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    The Z-Nut itself stripped out. This machine has seen its fair share of use before I acquired it. Click image for larger version. 

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  8. #8
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    Tonight I got most of the machine stripped apart. I made the mistake of taking paint stripper to the base. I didn't realize how much body filler is on these things. I will probably just scuff sand the column and touch up the dings before paint. The base I'll need to finish taking down to the raw casting and start the body filler.

    Click image for larger version. 

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  9. #9
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    Huanyang VFD showed up today. Will I have major noise issues mounting this unit in my control box with the computer in there? Or will I be okay with some clamp on EMI filters? Id like to keep everything in the box, but if its going to cause me issues I guess I could bolt it to the side of the box on the outside. Any thoughts?


  10. #10
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    A good number of people have mounted their VFD inside the control box and got away with it - but it sure adds
    1) complication - especially if you do have noise issues afterwards
    2) heat - my VFD has a fan on the back of it - keeping it in a closed box and then running for an hour or more wouldn't be too good I'd imagine unless you add cooling to your control box - again adding complication.

    I mounted my VFD up high on the front right side of my enclosure - its out of the way yet accessible.

    Looking forward to the rest of your build. BTW - those bearing blocks look like they are exactly the same as what I got through a Chinese ebay seller - they will very likely be a source of major backlash if you don't take them apart and 1) clean 2) reassemble properly - often the bearings are not put together right (ie back to back) 3) after that shimming between the races or under the cap may be necessary to get rid of all play.

    Mike

  11. #11
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    Sounds good, thanks for the tips. Im gonna mount it inside and get some clamp on EMI rings. I have an intake and exhaust fan on the enclosure, I will add more if needed later. Also probably going to redo the control box and mount everything on a big sheet of aluminum instead of the perforated steel that came with it. Going to add a breaker box as well so I can split 220 coming in to a 220 feed for the VFD and a 110 feed for the computer and power supply.


    Quote Originally Posted by ninefinger View Post
    A good number of people have mounted their VFD inside the control box and got away with it - but it sure adds
    1) complication - especially if you do have noise issues afterwards
    2) heat - my VFD has a fan on the back of it - keeping it in a closed box and then running for an hour or more wouldn't be too good I'd imagine unless you add cooling to your control box - again adding complication.

    I mounted my VFD up high on the front right side of my enclosure - its out of the way yet accessible.

    Looking forward to the rest of your build. BTW - those bearing blocks look like they are exactly the same as what I got through a Chinese ebay seller - they will very likely be a source of major backlash if you don't take them apart and 1) clean 2) reassemble properly - often the bearings are not put together right (ie back to back) 3) after that shimming between the races or under the cap may be necessary to get rid of all play.

    Mike

  12. #12
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    Dec 2007
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    233

    VFD in Control Cabinet.

    Mine is in the control cabinet with the computer. The computer is open and not in a case of any kind. The cabinet is cooled with 2 5" fans I purchased off of ebay for $12 each. I use a section of furnace air filter on the intake of the fans. The cabinet is positive pressure. The cabinet size is 24"x 36" and 12"deep.

    I have not seen issues with noise that causes a missed step or other problem.

    See this UTube video of the Jaguar Cub I used to run my spindle.


    [ame=http://www.youtube.com/watch?v=E5TstpkDdIQ&list=UUCdf9bc7fhfQUBckLmEudtQ&index=11&feature=plcp]IMO Jaguar Cub VFD - YouTube[/ame]



    Ark1.

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