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rung fu clone RF-45 ZX45 cnc conversion

Discussion in 'MACHINE BUILD LOGS' started by jumps4, Aug 22, 2012.

  1. bloomingtonmike

    bloomingtonmike United States Active User Active Member

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    Ugra CNC (Andy) will test out the spindle you buy from them and send you video of run out on the spindle you are buying. Made me feel a bit better than risking junk bearings from a china spindle delivered from china.

    Also a the WJ200 Hitachi VFDs are nice and make adding a brake resistor pretty easy if you want one of those later.
     
  2. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Hi Steve, don't know if you still are watching this thread but just wanted to say thanks as I am in process of building a I.H. Charter oaks machine and am using your Z axis setup as it is a nice, clean and well engineered setup. I am of course going to use the 2- 1600 in oz units and the 4200 in. oz for the Z axis. Again Thanks for sharing your great build.
     
  3. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    Hello Roadster
    I'm still around and receive notifications if there is activity.
    If you have any questions I'd be happy to help.
    It was a fun build and to this very day the mill is as solid as the day I first built it.
    Steve
     
  4. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Steve, Glad your still around. I did have a couple questions about the Z bearing mount. Although you never mentioned it if I remember correctly you actually cut off the stock mounting holes to make it fit in the column, that's what it looks like anyway. Any help on this would be wonderful. I believe I already have it thought out but since your the master on this one I thought I'd ask. No sense in reinventing the wheel. Thank you on advance. Jack
     
  5. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    Hi Jack
    in post 43 the pics show the bearing I used, it is an option available instead of the block I used for x and y.
    if the diameter of your shaft is say 15mm for the bearing ID then the part number you need is a FK15 in ebay, the bearing prefix for the x an y mounts I used were BK. see ebay item number 161195513991 as an example.
    Steve

    fk15.jpg
     
  6. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Well that makes a lot more sense. The missing link. Thank you.
     
  7. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    I forgot to add that these bearings from China are not plug and play
    take the bearing apart and clean it well making sure the bearings are facing in opposing directions. the thin part of the outer races face out, opposite from each other. I have received them assembled wrong. also most of them require a thin shim between the outer races or you will not get any preload when you adjust the nut on your ball-screw. the inner races will contact each other before you have preloaded the bearing. the races fit snug in the housing so you will not notice this preload issue until they have been run under load. I just shim them all, then use the nut to set my preload.
    Once you have done this they are fine with no problems, mine have been running for years.
    Steve
     
  8. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Steve, thanks, I did realize that after I got mine and remembered your posts. My seals where there but some backwards and bearings backwards. I did have to modify the Z axis bearing mount and keeper to resemble pretty much the FK15 since the Chinese are out for the Chinese new year and parts would not arrive until after the 15th of March.
    Jack
     
  9. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    shooot I just ordered parts
    Steve
     
  10. Roadstercycle

    Roadstercycle United States Iron Registered Member

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  11. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    I checked it out it's looking great.
    I noticed this week when A friend asked me to bore an engine block for him that I couldn't do it. the block was 12" tall and I needed to bore 6" down. ( diesel ) my clearance was only 16" above the table.
    There is a lot of wasted stroke in the z axis on these machines.
    The spindle can come down and hit the table with no tool in it, and there is still about an inch left in the z down travel inside the column. where you are at in your build right now would be a good time to add a riser block to the z column to gain this wasted movement. A 4 or 5 inch riser would really make the machine more useful and with the quill travel the spindle can still reach the table.
    I'm going to add to mine as soon as I find the material.
    Steve
     
  12. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Just when I was going to put the column back on you through an awesome curve ball into the mix, can't put it back together now without doing this.. What are you going to use? Aluminum block?

    Jack
     
  13. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    well since i'm cheap the aluminum will probably be my choice unless I can find something else
    I'm in search mode...
    my thought on machining it flat and parallel to the mill table is to mount a grinder to the table to grind the top of the
    riser before mounting the column.
    Steve
     
  14. dracozny

    dracozny United States Active User Active Member

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    Only other thought I have for you is cast iron if you or someone has a small foundry to work with.
     
  15. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    I have a friend with an old machine shop I'm going over tomorrow to check his scrap pile
    he has trailers full of materials. I may get lucky and find a nice chunk of cast there
    I know me if i put the aluminum in, I'd still be looking for something to replace it, so I'll be patient.
    Steve
     
  16. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Steve I wonder if I could pick your brain on the driver setup on the Z axis 4200. I found where you set the the 1600s at 5000 and the amps at 3.5. I'm nervous about the Z.

    Jack
     
  17. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    I'm heading into the shop now I'll take pics of my settings and post them
    please give me your motor and driver part numbers so
    I can check to make sure they are the same
    Steve
     
  18. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    here are pics of my settings and a manual of the z axis driver
    Steve


    DQ2722M DSCF1800.JPG DSCF1801.JPG DSCF1802.JPG DSCF1803.JPG DSCF1804.JPG DSCF1806.JPG DSCF1807.JPG DSCF1808.JPG DSCF1810.JPG DSCF1805.JPG DSCF1809.JPG
     

    Attached Files:

    Last edited: Mar 7, 2015
    bvd1940 and bpratl like this.
  19. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Steve your awesome. My motor # 110BYGH201-001, driver DQ2722M. Wow this will really take the guess work out of it. Thank you for your help. I hope to up and running or testing I should say in a couple days.
     
  20. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    I am going to wait on the 4" riser until I find something nice. I have a chain hoist so I can really do it anytime easily.
     
  21. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    the settings I gave you are correct we have the same motors and drivers
    now the fun begins, there is for me nothing like seeing everything going for the first time
    Steve
     
  22. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Thanks Steve the Z works awesome with a little help from you and Hubbard CNC. They sell a little pulse generator that you connect to instead of having to use a computer. I'll use it to move the head quickly for small jobs so I don't have to turn on the computer.
     
  23. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    the handiest thing I have added to my machine is this
    it's the cheapest and works perfect I have 3 of them. both mills and my lathe
    $_12.JPG
     
  24. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Well I just ordered one from them too. I'll give it a try for that price. I've actually been using a usb radio keyboard that works great too but this looks promising.
     
  25. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Hi Steve, for reason I can't open your pictures of your motor tuning today. I was able to a couple days ago. I'm lodged in but it says error. I am tuning motors today and I was going to reference your as a start or finish???
    Any chance you can PM me?
     
  26. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Steve thanks for your help. Up and running, not seeing 200 ipm but very decent speeds. I get a motor stall (buzz) over 75 ipm on the x-axis.
     
  27. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    here is a copy of my zx45.xml file, You will have to unzip it.
    copy it to your mach3 directory and it will show up in your list when you start mach3 loader
    ZX45Mill, open up ports and pins when it first opens and make sure all pin setting are the same as yours
    disable a axis if you don't have one.
    once you have checked all the pin settings you can turn on the power to your controller and test it.
    the other zip file is pictures of my screens same as in post above
    Steve
     

    Attached Files:

  28. Roadstercycle

    Roadstercycle United States Iron Registered Member

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    Thank you Steve.
     
  29. TomS

    TomS Active User H-M Supporter-Premium

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    Hi Steve. I think you answered this question for me before but I can't find the post. Question is what breakout board are you using? I have the same motor and driver kit as you. As I recall you said the board that came with the motor/driver kit didn't work all that well. I'm also planning on using the UC-100 from CNC4PC.

    Thanks for your help.

    Tom S
     
  30. jumps4

    jumps4 Global Moderator Staff Member Active Member

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    Hello Tom
    this is not the same seller but it is the same board
    Ebay item number
    261213650116
    also the Uc100 is shipped with a gender changer now
    Steve
     

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