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Type: Posts; User: r3292c

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    Hello NGrimberg, Thanks for your interest. I...

    Hello
    NGrimberg,
    Thanks for your interest. I don't remember I posted a picture of star in a ball here. Probably you found it in my youtube videos.
    I don't want to put commercial info in this...
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    Sticky: The nut in a nut souvenir on ebay ...

    The nut in a nut souvenir on ebay

    https://youtu.be/ZPXmND70FUg
    https://www.ebay.com/itm/123555432233
    https://www.ebay.com/itm/123555426815
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    Here is a new puzzle - the nut in a nut. Aluminum...

    Here is a new puzzle - the nut in a nut. Aluminum and brass.
    377371

    377372

    377373


    https://youtu.be/y9TkS89BGGg
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    I think it's an interesting comment! The way I'm...

    I think it's an interesting comment!
    The way I'm using servo's on this machine is the same as one uses steppers. I provide simple "step/dir" for the servodrives. This means I've just replaced...
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    Yes, I do have plans to build CNC mill. That's...

    Yes, I do have plans to build CNC mill. That's not going to be a CNC conversion, I don't like the idea of taking a donor with dovetail ways for the conversion. I'm thinking about building a small...
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    As a conclusion. What do I finally have? I have a...

    As a conclusion. What do I finally have? I have a small CNC lathe with linear swiss-type tooling. Maximal X-axis travel is 165mm, that allows me to install 4 tools by 50mm distance. More tools (x 5...
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    Here is something about tooling. First, I...

    Here is something about tooling.
    First, I tried to use a simple and quick idea below. The carbide insert is installed on the top of 1/2” bolt. Of course, the height of the bolt is trimmed...
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    Sticky: Machined souvenirs - Turner's Cubes and Balls on...

    Machined souvenirs - Turner's Cubes and Balls on ebay


    https://youtu.be/CEoSNdbmYxk
    https://www.ebay.com/itm/12310187196...84.m1555.l2649


    https://youtu.be/eDwUoK0Xv5c...
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    Welcome newborn baby-ball! It's diameter is 25mm,...

    Welcome newborn baby-ball! It's diameter is 25mm, two dodecs inside

    376872376873


    https://youtu.be/sf2krK5exKM
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    Gentlemen, thank you for your inputs. No birds...

    Gentlemen, thank you for your inputs. No birds nesting on the lathe anymore!
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    Servodrivers are connected to LPT port of the PC....

    Servodrivers are connected to LPT port of the PC. The only interface used in between of PC and servodrivers is the one recommended by Yaskawa. It’s a simple SN75174N signal converter. It takes...
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    The spindle is driven by 400W SGMAS-04ACA41 servo...

    The spindle is driven by 400W SGMAS-04ACA41 servo motor by means of HTD-5M timing belt and 2 x 1 pulley set.

    I wanted to have a more powerful motor initially but can’t find anything greater than...
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    I used SigmaWin+ tool to configure and auto-tune...

    I used SigmaWin+ tool to configure and auto-tune my servodrives. This tool is available for free download on Yaskawa website, as well as all manuals. This tool allows to:
    1. check the drive,
    2....
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    I use Yaskawa SGMAS-01ACA21 servo motors and...

    I use Yaskawa SGMAS-01ACA21 servo motors and SGDS-01F01A drivers for controlling X and Z coordinates. Here is some basic info on screenshots below.

    376744376745



    HTD-3M pulleys with 4 x 1...
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    The cross-feed (X-) rails are bottom-up mounted....

    The cross-feed (X-) rails are bottom-up mounted. The rails are screwed directly to the table. The threaded holes of X sliding blocks were drilled through with a carbide drill bit.

    376743
    As you...
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    Recommended conditions from Korloy are: 1. Speed...

    Recommended conditions from Korloy are:
    1. Speed 100-200 m/min, and I'm running at 180-360 m/min - at max diameter, but also 40-60 m/min at say 15 mm diameter;
    2. Feeding 0.02-0.15 mm, I'm using...
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    And yes, I'm making some for sale on ebay/etsy

    And yes, I'm making some for sale on ebay/etsy
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    So far I wasn't really successful with breaking...

    So far I wasn't really successful with breaking chips. I tried different speeds (3-6 m/s), feeds (0.1 - 0.4 mm/turn), and the depth is 0.25mm typically. I use aluminum CCMT/CCGT Korloy inserts. The...
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    The polishing powder is "Walnut/Corn Cob Tumbler...

    The polishing powder is "Walnut/Corn Cob Tumbler Media", I don't think it has any abrasive grit.
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    Manuals...

    Manuals
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    Have you tried searching Russian forums?...

    Have you tried searching Russian forums?
    https://www.chipmaker.ru/topic/206123/
    https://www.chipmaker.ru/topic/213480/
    https://www.chipmaker.ru/topic/137314/page__hl__6%D1%8280%D1%88
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    Home-made CNC lathe using servos

    This is a thread about CNC Lathe I recently built. This is my first CNC machine, and obviously, I’m not a CNC guru. Being an engineer, I prefer more practical ways of making things rather than R&D...
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    The drum can be also driven by a lathe....

    The drum can be also driven by a lathe. Especially if you use VFD for controlling RPMs. I adjust RPMs of the drum listening to the sounds it generates.
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    Nice to see that at least one person noticed...

    Nice to see that at least one person noticed finishing done! Thanks! :)
    Deburring and finishing is a real challenge. Since I tried to minimize manual work I experimented with my ball mill a lot....
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    1" - 25mm cubes, four levels 376612 ...

    1" - 25mm cubes, four levels
    376612


    https://youtu.be/CEoSNdbmYxk
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    Unseparated cubes, 2" 376610376611

    Unseparated cubes, 2"

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    2" cube, 6 levels 376609 ...

    2" cube, 6 levels
    376609


    https://youtu.be/N1YvTxRAmyk
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    "Swiss cheese" cube, 50mm 376607376608 ...

    "Swiss cheese" cube, 50mm
    376607376608


    https://youtu.be/tmGS2PmXxx0
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    1-1/4" - 31mm, four levels 376604376605376606...

    1-1/4" - 31mm, four levels

    376604376605376606


    https://youtu.be/Dv9Qlc1enck
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    2" - 50mm, six levels 376601376602376603 ...

    2" - 50mm, six levels
    376601376602376603


    https://youtu.be/eDwUoK0Xv5c
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    Machined souvenirs - Turner's Cubes and Balls

    Hello everyone! My name is Ivan. I'm new to this forum, but metalworking is my hobby for the last 12 years.
    I've built CNC Lathe recently and make these metal puzzles that every chipmaker knows....
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    Sticky: Hello Rob, Thanks for welcoming. And you're...

    Hello Rob,
    Thanks for welcoming. And you're right. Making these cubes on a manual machine requires "concentration and attention to detail for extended time periods"... However, I was able to...
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    Sticky: And separated https://youtu.be/N1YvTxRAmyk...

    And separated

    https://youtu.be/N1YvTxRAmyk
    376580
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    Sticky: Hello, I'm Ivan. Here is one of my latest...

    Hello, I'm Ivan. Here is one of my latest projects. It's 2" big, unseparated.
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