On Monday, May 07, 2012 02:17:18 AM Jon Elson did opine: > gene heskett wrote: > > On Sunday, May 06, 2012 09:15:18 PM Jon Elson did opine: > >> you should be able to set up X and > >> Z offsets for each tool in the tool table. > > > > That would require I get at least 3 or 4 more QC toolholders. But > > then I am reminded that the QC post must be rotated in order to > > present the tool to the work at the correct angle, which is only as > > repeatable as eyeballs can make it. > > Well, if you don't use all the preset offsets, then you lose a great > advantage of > the lathe CNC system. Also, doing it all manually, you have to remember > what > tool is #1 in the tool table, etc. > > > OTOH, I do need more toolholders. I could make a setting > > > > tool that would fix the reach out of each tool pretty consistent. But > > before I tie a few hundred more up in holders for this flimsy post, my > > first inclination is to ditch the whole compound slide since linuxcnc > > can handle that rather nicely, and put a bigger, far more rigid QC > > post directly on the X cross-slide. Something made out of real steel > > as opposed to the crappy, flexible alu this QC is made out of. > > Yeah, and then pretty soon you'll be lusting after an 8-station > Barruffaldi CNC tool turret on eBay! > > > The thought also crosses my mind to mount a microswitch for homing > > that could be dropped into a locator on the carriage, but that would > > require a touchbar 3 inches long that was exactly on axis. The > > alignment to keep it on axis while allowing it to swing out of the > > way, or be "unplugged" to get it out of the way would be fairly > > stringent though > > You can set your approximate Z work position by placing a tool in the > way of the part and then > pushing the bar through the chuck (or collet) until it hits the cutter. > That's the "poor man's > bar puller". > > Jon > I do that now, for those tools that are left cutters. I could do that with the single tooth too as I resharpened it a couple days ago so that I could face it 20 degrees to the left while having the correct angle on the end of the cutoff blade I resharpened.
But I didn't manage to try and cut another thread with it as I spent the evening hacking on the my-lathe.hal file, and don't even know if its functional as I did quite a bit of re-arranging, comment adding and quite a bit of "re-wiring", finding out in the process why the lowpass.0.gain 0.01 didn't seem to effect what I was seeing in the spindle-revs net. Anyway, its been copied to my web page, in the Genes-os9-stf/eagle subdir. If someone wants to look it over and tell me I'm an idiot, that's fine, as long as you also tell me how to fix the idiocy. ;-) Thanks & Cheers Jon, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> Vermouth always makes me brilliant unless it makes me idiotic. -- E.F. Benson ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
