That little mill is such a sweet example of what you can do to use a variety of parts to make up a CNC controlled mill. John
> -----Original Message----- > From: Jon Elson [mailto:el...@pico-systems.com] > Sent: February-16-20 9:30 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Open source CNC architecture > > On 02/15/2020 08:04 PM, Phill Carter wrote: > >> I understand that if you are using a +/-10V with encoder feedback directly > back into LinuxCNC that this concept would not work for you. But since you > say you need LinuxCNC can you tell us what you do have? > >> > >> How is your LinuxCNC connected to your milling machine lead (ball?) > screws and spindle motor? > >> > Well, in my case, I have a portable machine for demos at > shows and such, that uses my PWM controller and PWM servo amps. > See http://pico-systems.com/minimill.html for some old > pictures of this machine. > > And, for real machining, I have an ancient Bridgeport > (1938-41 vintage) converted to CNC with ballscrews and DC > motors. > http://pico-systems.com/bridgeport.html > This uses my PPMC board set for analog servo amp control, > and my own analog velocity servo amps. I started using this > in 1996 with an ancient Allen-Bradley CNC control, then > moved to the original EMC in 1997 with a Servo to Go card. > In about 2005 I started using my own PPMC motion control > interface, but otherwise the same servo amps and encoders. > Since then, I have added rigid tapping and a Blum touch probe. > > Jon > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
