On 11/03/2011 6:28 AM, Tom Easterday wrote: > On Nov 3, 2011, at 7:40 AM, andy pugh wrote: > > > >> Do the encoder indices match? ie, with both encoders at the index, is >> the gantry square? >> > No. And I don't know how we would line them up. Also, if we were able to > line them up, if the motor is ever disengaged from the rack we would have to > re-align them. Sounds like it would be difficult. > > You HAVE to line them up! Perhaps you get both encoders on the index mark and then loosen the couplings, allow the gantry to come to its position of least stress, and then tighten the couplings. Yes, if the rack jumps a tooth, or the machine is disassembled for service, you have to re-align the indices. This is required an any commercial machine tool with a gantry, too.
Jon ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
