2009/12/2 Florian Rist <fr...@fs.tum.de>: > I probably could correct all errors by adjusting the hardware, but his > would most probably require disassembling most of the machine and take a > lot of time. Maybe I´ll to that in January.
I think that truing up the axes can be seen as part of the installation and commissioning procedure. Does the machine have a twin-drive X axis? It sounds like it is possible that the drives are out of synch, either due to misalignment of the home switches or possibly due to the homing procedure being wrongly specified in EMC. That would twist the Y axis relative to the table. If the drives are linked by a belt, then it might simply be a case of releasing some shaft clamps and running the axis up and down my hand, re-tightening and re-checking. Or you might need to remove the belt, move one leadscrew relative to the other, and reassemble. Z-axis alignment might also turn out to be relatively easy. A dial indicator mounted on the spindle such that it describes a circle on the machine table will give a very good measure of squareness, and will also indicate how your adjustments are working. It is not uncommon to find jacking screws built into the linear rail mounting arrangement, for example (but this might not be relevant to your machine) Given the machine type and the reported problem, I would be concerned that the axes are twisted and "fighting" each other. Is the machine securely bolted to the floor absolutely flat and level? Even traditional cast iron machines can be twisted by uneven floors, and it is more likely to be a problem with a fabricated steel/aluminium frame. A good spirit level should show up any twist (check it both ways on all 4 edges) -- atp ------------------------------------------------------------------------------ Join us December 9, 2009 for the Red Hat Virtual Experience, a free event focused on virtualization and cloud computing. Attend in-depth sessions from your desk. Your couch. Anywhere. http://p.sf.net/sfu/redhat-sfdev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
