On Sunday 21 September 2008 21:05:13 Christopher Purcell wrote: > I would like to improve my home-made 3D wood carving router. It has > stepper-driven 1m long THK ball screws (bless you Ebay) which seem to > be moving exactly as EMC2 commands, now that I have Helical couplers > fixing the backlash. The next thing I want to check and maybe tweak > is the perpendicularity of the 3 axes, which I bolted down using only > a carpenters square and level as guidance. This is in a home wood > working shop so the only instrumentation available is a dial > indicator. If I can measure the axes, then corrections can be included > in EMC, presumably as hinted at in the kinematics chapter of the > Integrators handbook. > > How do you measure the perpendicularity of 3 axes of a mill?
Well, you can take a workpiece for which you know that it's exactly perpendicular (Finding one is the hard part :P) and mount the dial indicator to the master spindle. So if you see non-perpendicularity on the dial, but in fact know that the workpiece _is_ perpendicular, you can calculate the deviation with trigonometric functions. -- Greetings Michael. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
