On Wednesday 15 February 2017 22:41:55 Jon Elson wrote: > Well, took QUITE a while, but I now have the Blum TC50 touch > probe set up on my Bridgeport. > (This is the one that I had at the Wichita code fest.) I > now have the interface in a box mounted on the mill, and > made a few mods to that. When I had it in Wichita, there > was a switch to allow the machine to move when the probe was > not installed. it was possible to defeat the probe safety > and thereby break the probe tip. Now, I have a probe on > button and a probe off button. When you press probe off, it > turns the probe off and allows the machine to move. When > you press probe on, it turns the probe on and if the IR > receiver is not getting a valid signal from the probe, it > asserts motion.feed-hold to stop the machine. If you press > probe on when you install the probe in the spindle, it > pretty much protects you from breaking the probe. > > One little oddity I noticed was that if the probe is tripped > when you start a jog move, LinuxCNC doesn't complain like it > would when the probe trips DURING a jog move. Well, that > makes sense as if you interrupt a probe routine, you may > need to jog off the probe. But, it means you need to be > careful! > > Jon > That little gotcha has caused me to smash a couple tools, after they were pressed/smashed into the pcb board I was using for contact materiel. Turns the air a little blue too.
I made the Sheldon run a bit smoother tonight, I discovered I can't count zero's worth a toot, so the servo-thread I thought I had running at 2 kilohertz, was actually running at 200 Hz. No wonder the watchdog was biteing. Fooling around with the spindle, I noticed I had never cut the slot in the lock ring that was supposed to grab the backplate hub, took the chuck off to finish that minor detail, then when re-installing it, I could see a teeny teeny wobble at the backplate/chuck contact. So I finally got brave and removed the chuck's 3 mounting bolts. Putting a dial on the face of the plate, it was a mess, nowhere near flat by nearly 10 thou! So I rustled up a tool, cut most of the dirt off the outside of the ledge (should have taken off another 2 thou, see below) then brought it to the outside edge & drove it toward the spindle until it had left a clean cut all the way around, then drove it all the way to the ledge. When I started, a .5" rod had about .0075" runout. Put it back together, put the dial back on to check runout with the bolts just finger tight, found the high spot of about 6 thou, tapped it with a deadblow hammer, no change. Hit it harder. Wash, rinse repeat, 4th heavy hit it finally moved, and 7 thou turned into 2.5 thou, but at that point I was either out of bolthole clearance or ledge clearance. Next time I have it apart I'll take another 2 off the ledge. I'd gone out to put a home switch on X. But I'm easily distracted so its still laying on the mills keyboard table. :) > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
