That's where mag mounts come in real handy. I have a 2" depth gauge that I used on my machine. Mis-calculated the first run. Good thing it was magnetically attached rather than clamped on...
Mark On 04/07/2010 08:33 PM, Dave wrote: > In my experience with steppers that are running on the edge > (mechanically or electrically), they almost never lose steps the same > amount in both directions. > > Best thing I can think of doing is to put a 1" dial indicator on the > questionable axis, write a test program or better yet, patch an > existing one, so the axis deflects the indicator and pauses there, then > goes away from the indicator and runs a lengthy program away from the > indicator then have it come back and touch the indicator at the end of > the run. If you do that right, you can loop the program and let it run > for a while, if anything is out of wack, that will show up as a changing > indicator position. > > You can work the home thing out also, but the dial indicator thing is is > a lot more flexible IMO and works on almost all machines.. > > If your machine is way out of wack, be careful how you mount your > indicator so it doesn't get wiped out if the machine is erractic. > > Dave > > On 4/7/2010 4:39 PM, Belli Button wrote: >> Statistically you will loose as many steps going forward as you will going >> backwards, sending the machine to 0,0 will not guarantee that you have not >> lost and made up steps throughout your job. >> >> Greg >> >> >> ----- Original Message ----- >> From: "Slavko Kocjancic"<[email protected]> >> To: "Enhanced Machine Controller (EMC)"<[email protected]> >> Sent: Wednesday, April 07, 2010 5:38 PM >> Subject: Re: [Emc-users] Homming error >> >> >> >>> 2010/4/7 dave<[email protected]> >>> >>> >>>> The accuracy of that system depends on how good your home switch is. >>>> >>>> I've always used a dial indicator against the spindle for that type of >>>> measurement. Same concept but easier since you don't have to home. >>>> >>>> Dave >>>> >> >> ------------------------------------------------------------------------------ >> Download Intel® Parallel Studio Eval >> Try the new software tools for yourself. Speed compiling, find bugs >> proactively, and fine-tune applications for parallel performance. >> See why Intel Parallel Studio got high marks during beta. >> http://p.sf.net/sfu/intel-sw-dev >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> > > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
