Monthly Archives: June 2014

Interesting Times

Posted on June 27, 2014 by nefastor

I’m inaugurating this new category on my blog. I basically wanted a place where I could aggregate my rants, frustrations and pet peeves so they wouldn’t pollute the technical content of this blog. They wouldn’t be on the blog at … Continue reading →

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Servo Calibration Mystery

Posted on June 27, 2014 by nefastor

Hello everyone, Since my last post I’ve modified Mill #2 to reinstall its old, shorter X axis so I could repair the damaged ballscrew on the new X axis but also, more immediately, so I could proceed with calibrating my … Continue reading →

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LNG1 AC Servo Speed Test

Posted on June 15, 2014 by nefastor

Following yesterday’s failure I just couldn’t let it rest, so I burned the midnight oil. I did extensive research on the internals on ballscrews. Then removed the servo from Mill #2B and then tried to turn the ballscrew by hand. … Continue reading →

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Sticky Ballscrew Trouble

Posted on June 13, 2014 by nefastor

Well, everything can’t always go perfectly. In my last post I demonstrated that my DIY CNC milling machine, upgraded with a 10mm-lead ballscrew and a 600W AC servo, could pull off linear speeds of 20 meters per minute. While that … Continue reading →

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My First AC Servo

Posted on June 7, 2014 by nefastor

Hi everyone, Today is a big “first” : I’m testing my first ever AC servo. I do use AC servos professionally, notably Harmonic Drive servos, but these are very specialized servos, usually purpose-built, always very expensive. I’ve never actually bought … Continue reading →

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