Greetings all; I pulled the index plate off the bs-1, looking for a place where the index/home switch would be somehat protected, and gnawed a notch in the edge of the spindle flange and have a switch sitting in a puddle of JBWeld to sense that notch.
Getting the mounts wrapped around the motor, I see I need to get rid of about 75 thou off the bottoms of the mounts and I'll be ready to bolt it down. Progress, for some loose definition of the word. I noted that 1 turn of the bs-1 worm is exactly 10 degrees so I had the idea of measuring one turn of the motor, hard to do without a long pointer, but came up with about 20 counts shy of 6000 for one full turn of the motors output shaft. Since it takes 6000 to turn it (nominally) 10 degrees, then 36 turns ought to be the one turn scale, which is a hair less than 216000, so I put that in the ini file and restarted linuxcnc. Obviously wrong as can be, so that seems to be a scale not for 1 turn of the bs-1 but the right scale then is for 1 degree of its rotation? Meaning the right scale is 600 or maybe a few less? No wonder I'm having trouble tuning it. It is obviously moving a lot faster than the dro says it is. When I used the rotary table, scale is stepper micro-steps for one full turn, and I can tell it to go in 90 degree steps while making tap hats, and its right. So why is it not the same "unit" for a servo? Call me puzzled. 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis 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
