On Wed, 15 Dec 2010 10:30:32 -0600, you wrote: >On Wed, Dec 15, 2010 at 09:52:03AM +0100, dambacher-retrofit.de wrote: >> Hi >> >> Am 14.12.2010 21:13, schrieb dambacher-retrofit.de: >> > It seems to work ok. >> >> but looking to the sources (src/emc/task/emccanon.cc) , there is definitely a >> difference between XYZUVW and ABC made. >> At least there are different speed calculations. >> And I don't know the implications if I use ABC as linear axis... >> >> So be careful. > >The biggest problem using ABC for linear axes is they don't scale >with G20/G21. If you make a gantry with X and A (which you should >not -- I don't know why people think they want this, but it comes up >often) and you use G20/G21 you'll get one side moving 25.4 times as >fast/far as the other.
If it comes up often, perhaps EMC should be able to accommodate it? Maybe an entry in the ini file to determine it? It's not uncommon for A,B or C axis to be configured as linear axis rather than angular axis. Some CAM programs can only output code on rotary axis when they are configured as linear, poor I know, but very common all the same. Steve Blackmore -- ------------------------------------------------------------------------------ Lotusphere 2011 Register now for Lotusphere 2011 and learn how to connect the dots, take your collaborative environment to the next level, and enter the era of Social Business. http://p.sf.net/sfu/lotusphere-d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
