On Friday 21 July 2017 11:13:34 dave wrote: > On 07/21/2017 07:31 AM, Gene Heskett wrote: > > On Friday 21 July 2017 10:16:27 dave wrote: > > > > Except Gene wrote: > >>> But another problem I have mentioned previously ate my lunch, > >>> about 2 hours and some material yesterday while making the first 8 > >>> brass screws for the rear of the spindle spider. Axis couples the > >>> 4 motion keys to the two teeny little tally eyeballs at the top of > >>> the axis left control panel. So you can set the speed to creep, > >>> run it to the reference position, and do a touch off which is > >>> automatically applied to the last axis moved. > >>> > >>> But HAL doesn't!!!!!!! One must get close enough to the monitor to > >>> see which axis has the focus, and fix it if its wrong before doing > >>> the touch off. > >>> > >>> So, after I had drilled and tapped the holes in the alu ring, I am > >>> making the brass bolts to fit those tapped holes. We badly need a > >>> coupling mechanism between the motion.axis-N-jog-enable, and those > >>> buttons tallying that in the axis display. > >>> > >>> Driving the machine with my dials doesn't tell axis I just moved > >>> Z, which is required with the tool change since 3 tools are > >>> involved. So after very carefully getting X set so the threads I > >>> made fit rather snuggly, at about bolt 5 I didn't notice the teeny > >>> dot was in the wrong circle, and did a z touch off to my very > >>> carefully set X offset. > >>> > >>> At the very least, the touch-off box needs one more button to > >>> 'undo' the last touch-off, so we can undo it, then select the > >>> right little axis button, then touch-off the axis we intended to. > >>> That would at least be a recovery path if the wrong axis was > >>> touched off. As it is, the recovery to a usable state is putting > >>> it back a bit bigger, manually cutting off the bad thread, > >>> resetting the stickout, and an hour re-running the code while > >>> touching X off about .05mm smaller at a time until it fits again. > >>> > >>> Thats frustrating to say it in mild terms. Very frustrating. Fix > >>> it, please. Its a much larger problem IMO than the MDI editors key > >>> missfires. That can be tolerated, a bigger font for the MDI > >>> commandline would help as it can place the cursor with care and a > >>> stable mouse, but the wrong axis touch-off is 1000x the time and > >>> material waster. > >>> > >>> Thanks all. > >>> > >>> Cheers, Gene Heskett > >> > >> Rather than touch off to adjust; change the offset, very > >> quantitative and fast. > >> > >> Dave > > > > Where Dave? > > > > Thank you. > > > > Cheers, Gene Heskett > > In TK it is Scripts -> set coordinates ... I just assumed (???) that > axis would have a similar feature.
Actually gcode does: again the docs are quite lacking, too concise. Shows G92 axises, so I presume I could combine this into one program and put a: G92 z0.000 at the top of the file after setting the offset to put the first tool at the face of the stickout, then before turning the thread, G92 z-2.0374 (mm's) in just after a tool change. Ditto for the cutoff tool. I'm finding either the head isn't aligned, or I need to rotate the coords around the non-existent y axis by half a degree to compensate for the taper the flexability of the brass stickout when its been reduced to a hair less than 8mm's. I am finding the end of the screw is a couple thou bigger than at the thread end near the hex cap. I can do that with a g33.1, but g76 can't other than with the L2 and an E length=length of thread - one thread pitch. But thats way more comp than needed for this. For a 21mm long thread, my calipers show about a 3 thou diff. The next 4 screws should have around 25 to 30 mm's of thread, depending on the size of the pipe I can src. But the weather is so black headlights on is an excellent idea. Noisy too, and some wet. Different question now. I've been studying up on the tool table, and what I am seeing seems to indicate that at least for common turning tools, a jig for setting the cutters stickout applicable to a box of loose tool holders, would be handy. What method do most of you use so that a dull tool can be removed from the QC holder, sharpened or rechipped, and returned to the tool holder with exactly the same stickout it had when it was last mounted and put to use. URL's to pix of what works best in your shop would be nice. Thanks a bunch everybody. > Dave > > ---------------------------------------------------------------------- >-------- 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 > Emc-users@lists.sourceforge.net > 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
