hi gene maybe redesign to drive past the switch like you can brush a wall mounted light switch by swiping your hand over the wall surface rather than punching it :-) ( try mounting so the direction of switch activation is 90 degress to the joint motion ) tomp
On Sun, Mar 31, 2019 at 9:03 PM Gene Heskett <ghesk...@shentel.net> wrote: > Greetings everybody; > > I think I've got the coolant pump starting problem fixed. Ignore that > faint knocking sound. > > Now I would like to use a teeny little pushbutton (6x6x2.5mm tall) > between two solid parts of this machine for home and potentially as > limit switches. > > However the amount of available overtravel after the switch has clicked > is quite limited unless this switch is mounted on something crushable so > that the getting stopped overtravel does not crush the switch like a > Coors can. > > Is there a way to determine how much overtravel vs approach speeds is > occuring? > > I ask because a wide open x or y move can do around 220 ipm on this > machine, and that stopping distance is not an ignoreable distance when > the switch only has maybe .010" of overtravel after its clicked. > > So I first would like to determine the maximum safe SEARCH_VEL I can use > for homeing, then from that, be able to set MAX and MIN LIMITS far > enough away from the crash stop to provide crash protection in the space > between the LIMIT set in the ini file, or how much crush room I have to > build into the switch mount? > > Also, in attempting to minimize this stopping distance, what or how can > one detect a motor step slip if the ACCEL's are stopping the motor > faster than it can stop? Hopefully without pounding a $90 dial into > junk. > > Thanks all; > > 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 > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
