On Wed, 2013-03-20 at 14:43 -0700, Gregg Eshelman wrote: > --- On Wed, 3/20/13, andy pugh <bodge...@gmail.com> wrote: > > > I have a feeling that Anilam used tachos on the motors and > > glass scales on the machine slides. (Though maybe not always). > > > > In that configuration I think that keeping the existing > > drives is > > likely to be easier, but if switching to the PWM controller > > then it > > isn't so much a case of improving the encoders as adding > > them. > > However, I guess that the tachometers become redundant at > > that point, so it may not be too difficult. > > It has glass scales on X and Y on the table, Z on the quill. The issue with > keeping the original controllers is that one is gone, missing, MIA - along > with the X axis servo motor. If there's a selection of different control > boards that can be adapted to replace it, that could save some money. If it > has to be the exact same as the other two, that will tip me towards pulling > out everything except the motors and power supply (also leave anything else > original as needed for motor power), possibly even the motors depending on > price of 3 newer style VS one old Baldor or equivalent. > > As for the spindle drive motor, I don't have three phase power but I do have > 220V and know some local places to get a 220V single phase real cheap, or > even just swap for the three phase that's on it. >
Automation Direct GS2 2.0 HP AC DRIVE 230V 1/3 PH IN 3 PH OUT Not cheap but they work. I got tired of having to fire up the 30 Hp 3ph converter every time I wanted to do something on the small mill. Dave > I uploaded some pics of the mill here. PartsByEMC.com/pub > > The rust looks worse than it actually is. The table moves easily, I ran it > forward then back a bit, the way wipers scraped most of it off and there's > still lube in the ways under the table and between knee and base. Could > rapidly go downhill if I don't buy it, fortunately where it is tends to be > pretty arid most of the year. > > As you can see in the front shot, the CRT is just laying loose in its box. > Since there's no easy open access on it, I couldn't pop it open to see the > condition of what's in there, or if there's anything missing. > > There's a couple of property tags on it, former owner was AC-Delco > Electronics. > > The projects I have in mind for this aren't going to require exceptional > accuracy, they're just the sorts of things that aren't easy or even possible > to do on a manual mill. Doesn't matter to me if it won't be able to hold > 0.0005" tolerances or even 0.002". The main thing is how cheap I can get it > going. > > I've recently rehabbed a 1940 10" Montgomery Ward (made by Logan) and a 1967 > 9" South Bend lathe, both of which had been written off as basket cases. This > mill as it sits is in far better condition than those lathes were. > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_mar > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
