CAD CAM EDM DRO - Yahoo Group Archive

EMC2 DC-servo controlled minimill

Posted by awallin55
on 2008-05-11 07:44:57 UTC
Hi All,

you may find some of my recent videos amusing/interesting.

Servo tuning and test-running
http://video.google.com/videoplay?docid=3321458111477478272&hl=en

Testing the X-axis:
http://video.google.com/videoplay?docid=1864749796574452730&hl=en

Program dry-run:
http://video.google.com/videoplay?docid=-4918805093165248240&hl=en

One of the first cuts:
http://video.google.com/videoplay?docid=-6222166294337898920&hl=en

First 'serious' job, rough and finish cutting a model-yacht keel bulb
out of steel:
http://video.google.com/videoplay?docid=916833244018390029&hl=en

The machine started out life as an Opti BF-20 manual mill, but only
the base and column remain. We've installed linear rails, ballscrews,
a new belt-driven spindle, a new bigger table, and an enclosure to
keep the coolant inside.

It's controlled by EMC2 via an m5i20 pci-card from mesanet. The
servo-amps are from Jon Elson / Pico-systems and the DC-servos from
Dan Mauch / camtronics.

The servos have 1000 count encoders so I get 4000 edges per revolution
and they are direct-coupled to 2.5mm/rev ballscrews. I did the
PID-tuning with rapids set to 4000mm/min and acceleration around
500mm/s and it stays inside +/- 16 counts or around 0.01 mm at all
times. Better than this for actual cutting which we do at around
1500mm/min maximum.

Next we are going to put an encoder on the spindle to enable rigid
tapping.

More about this in my blog: http://www.anderswallin.net/

have fun,

Anders

Discussion Thread

awallin55 2008-05-11 07:44:57 UTC EMC2 DC-servo controlled minimill gcode fi (hanermo) 2008-05-11 08:22:31 UTC Re: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill awallin55 2008-05-11 09:36:42 UTC Re: EMC2 DC-servo controlled minimill Jon Elson 2008-05-11 15:18:01 UTC Re: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill shawn c 2008-05-11 20:31:50 UTC RE: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill Jon Elson 2008-05-11 20:56:51 UTC Re: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill awallin55 2008-05-11 23:23:12 UTC Re: EMC2 DC-servo controlled minimill shawn c 2008-05-11 23:52:34 UTC RE: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill Leslie Newell 2008-05-12 02:28:53 UTC Re: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill awallin55 2008-05-12 02:29:49 UTC Re: EMC2 DC-servo controlled minimill Jon Elson 2008-05-12 09:50:01 UTC Re: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill Leslie Newell 2008-05-12 16:36:31 UTC Re: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill shawn c 2008-05-12 21:29:28 UTC RE: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill shawn c 2008-05-12 22:10:41 UTC RE: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill Leslie Newell 2008-05-13 01:00:34 UTC Re: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill Leslie Newell 2008-05-13 01:12:48 UTC Re: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill shawn c 2008-05-13 09:22:09 UTC RE: [CAD_CAM_EDM_DRO] EMC2 DC-servo controlled minimill