On Thu, 2010-12-02 at 10:08 -0500, Tom Easterday wrote: > I really appreciate all the input! I have to say I had no idea how > much discussion this would generate. It makes me wonder what the EMC > user base uses for homing, or perhaps makes me surprised that the EMC > user base is just homing inaccurately and warm and fuzzy in their > ignorance. I know I would have been. But now I won't sleep at > night :-) > > -Tom
On my HNC lathe, Jon's UPC controller takes care of the home and index logic, it also has way-fast encoder reading so the index doesn't get missed. It should be accurate to less than .0025mm (.0001"). On my Shizuoka mill, I line up axis marks, then 0 on the hand wheel dials. It's probably accurate to .13mm (.0005). If the homing didn't work I would have ruined parts by now. I just didn't understand the details, now I have a better understanding of what I don't know. I think most people are loose with homing and use touch off to get the workpiece to a known location. It works, but it's not very elegant. (If I recall correctly, setting up a functioning home is required to get an Integrator badge :) -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
