On Friday 04 January 2019 05:43:32 andy pugh wrote: > On Mon, 31 Dec 2018 at 18:06, Gene Heskett <[email protected]> wrote: > > Can this be done? With or w/o the tool rad offset, basicly using the > > tool itself for a homing switch? > > It probably _could_ be done, but I think that the answer to _should_ > it be done is "no" > > Home switches are for locating the axes on their tracks. Probes are > for locating the work in the machine envelope. Swapping them about is > asking for trouble and confusion.
My previous attempts were certainly quite unsuccessful for everyday use, but I just recalled that I didn't try to steer the contact to the axis being homed, I just had it net'd to all axises. That might at some point be a possibly avenue to drive down. But ATM, I'm trying to figure out a way to use a dro with around 8" of travel to calibrate this new 6040 gantry I'm putting together. Today I get into my old driver box and cut the A motors current considerably as its overheating at idle current. Then I need to get my spindle control signals into the OEM box to see if I can control the spindles vfd. Speed and on-off probably ok, but I've not yet found a direction control. I have found running in reverse is an excellent way to use a small bit of pcb as a tool length offset measuring device, very handy when one drill bit is 2.5" long and the next one may be 4" long yet you want to drill to the same depth for both. Contact is detected with no damage to the pcb. Thanks Andy. 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> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
