On Friday 20 November 2015 06:00:00 andy pugh wrote: > Has anyone ever tried embedding proximity sensors in their lathe > saddle to protect against chuck-strikes or backing up against the > tailstock? > > If so, any "lessons learned" about where to put the sensors?
Chuck strikes would seem to be so "tool mounted" a variable as to be unsolvable. But I have considered hanging a straight simple button micro microswitch on the saddle such that if its button is compressed, it would stop the saddle as it touched the tailstock. I have a similar setup on the front of the carriage that senses the cross-slide, stopping it about 10 thou from a crash stop at the front end of the slot in the carriage, that has been used as a homing switch for a couple years. My switch positions are such that I can, unless I've a really huge work piece in the chuck, remove the QC holder, and home the machine without crashing into something. In the FWIW category, the tailstock clamping on a 7x12 is so poor that my 1605 z screw can actually push it when you think its locked. 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
