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Type: Posts; User: Azalin

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  1. Building an air cylinder counter balance for milling machine head.

    Hi,

    I'm not a fan for gas struts so I decided to build an air cylinder based counter balance system for my BF20L machine.

    I already have an air compressor and a 40x300mm dual action air...
  2. Replies
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    Re: My Take on a DIY Vertical Mill

    The person who sold me the Schneider servo knew nothing about servos. He tried to turn the shaft but it was stuck then he said "I can't guarantee this servo works or not". So asked something like $50...
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    Re: My Take on a DIY Vertical Mill

    The one I got has no built-in motor. It's just a BT30 atc cartridge. I use it with a Schneider 1.3kw 4500RPM servo. A little slow but machine is a mill. I built it for steel so no need crazy speeds....
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    Re: My Take on a DIY Vertical Mill

    err, why this spindle? They sell BT30 cardridges for the almost same price. I got one last month. The quality is very decent.
  5. Thread: New ballscrews?

    by Azalin
    Replies
    16
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    910

    Re: New ballscrews?

    I wasn't referring to the ball screw. I was referring to the bearings inside the BK end support.

    Sent from my MI 5s Plus using Tapatalk
  6. Thread: New ballscrews?

    by Azalin
    Replies
    16
    Views
    910

    Re: New ballscrews?

    By "them" I meant the Chinese. I don't know the if one in your link is made in China or somewhere else. Just a little heads up.

    Sent from my MI 5s Plus using Tapatalk
  7. Thread: New ballscrews?

    by Azalin
    Replies
    16
    Views
    910

    Re: New ballscrews?

    By the way check the bearings in that BK end support. They use deep groove ball bearings instead of angular contact ball bearings.

    Sent from my MI 5s Plus using Tapatalk
  8. Thread: New ballscrews?

    by Azalin
    Replies
    16
    Views
    910

    Re: New ballscrews?

    In my BF20L mill I ended up using double ball nuts because the backlash of my old single ones (Chinese) was terrible. I still have backlash but in acceptable range I believe.

    Sent from my MI 5s...
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    Re: Yet another epoxy granite mill

    Battal. Means "big" in Turkish.

    Sent from my MI 5s Plus using Tapatalk
  10. Recovering a Daewoo-Ecoturn 250 S 2T with Fanuc O-TT

    Hi,

    A friend of mine owns this machine. He says some other idiot removed the bios battery (in hope to fix a sensor error) and now all the parameters (or whatever the Fanuc needs to boot) are gone....
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    Re: X3 spindle motor options

    I had worse. It was a pain but I managed an AASD servo and drive to work as spindle motor on my lathe. Position mode worked well except threading cycle in Mach4. That was because PoKeys does not...
  12. Re: [SIEG C4 Lathe] Bed ways re-grinding and overhauling best advices.

    Mine is a C6. No twist but it has small amount of wear on the spindle side. I've been thinking about milling the way flat and install linear guides but this means sacrifice on the swinging diameter...
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    Re: X3 spindle motor options

    Best option would be a slightly faster AC servo I guess. I installed a Schneider 1.13kw servo and ABB drive to my BF20L mill. I control it by velocity mode. I'm happy so far.

    I know people also...
  14. Re: Another 4th axis build with Harmonic drive (CSF-25-50)

    I have both.
  15. Re: Another 4th axis build with Harmonic drive (CSF-25-50)

    Hi,
    The largest part I'll machine is a steel 100mm diameter turbine wheel.494906

    Sent from my MI 5s Plus using Tapatalk
  16. Re: Another 4th axis build with Harmonic drive (CSF-25-50)

    Hi,
    Specs of the HD I have says the torsional stiffness is 14Nm where average torque is 55Nm. That's a little confusing for me.

    Do you mean I need to use a softer metal like aluminium instead of...
  17. Another 4th axis build with Harmonic drive (CSF-25-50)

    Hello,

    I just received my Harmonic Drive CSF-25-50 that I'm intent to use for the 4th axis. Good thing with this type of HD is that it comes with a nice cross roller output bearing which allows...
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    Re: Minimill to 4th Axis....

    Hi,
    @abfa9358 I don't know if you are still around but what size of FB type HD did you use on the 4th axis? I have a BF20L CNC mill and will build a 4th axis. I have 17 and 20 size in my mind but...
  19. Re: Want to build a cnc lathe. Options for headstock/spindle?

    Not answering the op but I converted a Siege C6 to CNC few years ago. I can do everything a 2 axis lathe can do including threading. However converting a manual lathe brings problem as well. No...
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    Re: Solidcam Postprocessor

    There is no password. He is a scammer.

    Sent from my MI 5s Plus using Tapatalk
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    Re: SK-66B-KC tool setter wiring

    Hi,

    I have the same tool setter. Have you figured out the wiring?
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    Re: Designing a cycloidal gear for 4th axis

    @deadlykitten, are you really in Antarctica? :)
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    Re: Designing a cycloidal gear for 4th axis

    Hi,
    Actually a strain wave gear was my first choice but Turkey has a EUR 150 limit per order. If one goes over that amount the cost almost tripples because the customs import sh*t. So I need to...
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    Re: Designing a cycloidal gear for 4th axis

    Hi,

    I nearly finished it but the geometry wasn't perfect because the backlash in the X and Y axes. So I stopped there and started to upgrade my mill. I installed DFU ball nuts thus backlash...
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    Re: Build log for my LMS 7550 aka SIEG SC4 lathe

    Hi,

    Good luck on your build.

    I have converted my SIEG C6 few years ago. I'm still using it. From the pictures the SC4 and C6 look very similar. Is the SC4 a newer version of the C6?

    Sent...
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    Re: Terrible backlash on my BF20L machine

    I put the machine all together. Now I measure 0.0213mm on both axes. However I noticed the long 2 segment arm of the magnetic base for the dial indicator is moving a little when the dial pin touches...
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    Re: Terrible backlash on my BF20L machine

    I also changed the oil lines for m 6mm to 4mm. I'd like to use copper tubes instead but I never had luck with them. https://uploads.tapatalk-cdn.com/20221113/093ce6c72cd5bab00861a0b61c77805b.jpg
    ...
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    Re: Terrible backlash on my BF20L machine

    I'm surprised how this jigsaw cut cast iron like butter.https://uploads.tapatalk-cdn.com/20221106/f584c61bd4e71fa21cec7bf1b428930e.jpg

    Sent from my MI 5s Plus using Tapatalk
  29. Replies
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    Re: Yet another epoxy granite mill

    Hi @peteeng and @badhabit ,

    I don't know why but my Tapatalk does not send push notifications, so I'm missing replies.

    My hobby room (cellar) is very small and I have limited space. Currently I...
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    Re: Terrible backlash on my BF20L machine

    Here's the X axis ball nut housing (or mount) I just made. It takes the first part and one third of the second part DFU 1605. The only thing I'm concern is that I made it off aluminum. Should I make...
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