I recently picked up an old Hurco KMB1, (Craigs list item), for home use. Everything seems to work but I'm not sure about the auto oiler. It seems to be controlled by a air solenoid valve operated by relay in the control cabinet, but I'm not sure when it's supposed to triggered. I don't have full schematics of this part of the system. This mill is a 3 axis KMB1, but it has a moveable head, ie tilt fore aft etc., similar to an SM1.
Hurco doesn't support kmb1's anymore, but allows their field techs to freelance with kmb's. We've got a great one rahcheer in Yonkers, NY, and there's a pricey guy in the midwest (MidWest cnc), and parts guys in FL and GA. Hurco should give you a heads up as to who's near you.
I have only passing familiarity with kmb's; Stan Dornfeld is another kmb guy here. But it may be that that relay shuts down the machine on low air, as the spindle lube requires constant 90 psi.
I wouldn't trust automatic oil on an old mill like that. I was fooling around inside a ten year old CNC mill a couple weeks ago and found one broken, one cracked, and one disconnected oil line. Upon closer inspection I also realized the disconnected oil line was clogged at the manifold. With the leaking oil lines the system wasn't developing much oil pressure so nothing was getting much oil. I'd double check everything before you gall a ballscrew.
Now I've got this 2000 Yang lathe with *grease* lines to dig into. Z axis has .010 backlash and sounds like a cement mixer...
Yeah; I was manually triggering the oiler and had turned up the air pressure perhaps a bit to high and it blew the line feeding the head out of the fitting. I didn't notice it right away because I was behind the machine, but when I came around in front, I noticed it had been squirting oil all over the schematic I had just been reading to find the oiler relay...really ironic.
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