I thought I would give an update on our ongoing project. This is a 60's vintage NC that used hydraulic servos. we are converting it to EMC2 using not quite as old Inland servos. (80's vintage) they are 8 brush low rpm high torque. (with the amc drives we are using - it will be 40ft-lbs peak.) We are using 2 mesa 5i20 boards as we are needing a good 70+ i/o + atleast 7 encoder counters and 5 +/-10v outputs. We are at the point where the machine is waking up. the mesa hardware is awesome (thank to peter and seb for their work).
Be sure to watch the 2 videos at the end of this email. lets see if I can create a linear picture show... this is what the machine looked like in the 60s http://electronicsam.com/images/KandT/oldkandt.JPG this is what the machine looks like now http://electronicsam.com/images/KandT/DSCCurrent.JPG getting rid of the old control http://www.electronicsam.com/images/control.jpg this is the old electrical box http://electronicsam.com/images/Kand...ctricalbox.JPG we welded 2 of the same boxes together for new electronics. http://electronicsam.com/images/Kand...n/moreelec.jpg here is it mostly hooked up http://electronicsam.com/images/Kand...ion/mostio.JPG This is the x,z,b gearbox - the old control used 1 hydraulic servo to run all 3 axis http://electronicsam.com/images/Kand...axis/start.JPG open http://electronicsam.com/images/Kand...axis/start.JPG stripped http://electronicsam.com/images/Kand...s/stripped.JPG shafts extended out so we can hook the servos up. http://electronicsam.com/images/Kand...is/3shafts.JPG servo plate mounted http://electronicsam.com/images/Kand...ervo_mount.jpg belts (B axis still needs a solution) http://electronicsam.com/images/Kand...rvo/belts.jpeg Because we are still using the z axis drive train that goes up though the saddle - we needed to get the backlash out of it. It uses split gears to do that. Grinding 1 washer thinner takes the backlash out of 5 sets of gears. Don't think the previous owner ever did this as we had to take a good .040" off the washer. The washer is the spacer between the 2 lower small gears. http://electronicsam.com/images/Kand...axis/gears.JPG we still have to mount the y axis servo. - The plan is to direct couple into this shaft. http://electronicsam.com/images/Kand...yaxisshaft.JPG here is the tool chain logic working... YouTube - Kearney and Trecker tool chain logic working in EMC2. Mechanically barcoded tools here is the first closed loop movement with the x axis YouTube - Kearney and Trecker first closed loop movement with EMC2. Getting there Very happy with the progress. (I only work on it about once a week. sam ------------------------------------------------------------------------------ Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. http://p.sf.net/sfu/intel-atom-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
