On Monday 17 March 2014 03:31:58 Robert Ellenberg did opine: > It looks to be from the different maximum velocities of lines and arc > segments. The circular arc segments are limited to the minimum of the > two axes in the current plane. The short line segments in between arcs > are limited by the maximum velocity along the direction of the line. If > the line is somewhat diagonal (as is the case in the steve.ngc > example), then the maximum velocity along the line is potentially > higher than the axis limits.
This seems like a potential problem for those of us with toy powered spindles. I often set a straight line cut, not to the tool limit, but to the spindle power limit, and that diagonal over speed move could lead to a spindle stall. And my XY drivers have more than enough power to break off a stalled 1/4" 4 flute end mill. While I think this is huge & worthwhile improvement to the TP, there are some of us who will not be able to fully explore those faster speeds. The motor on the X1 is a 90 volt, 1.8 amp rated motor. I have an ammeter in the circuit for mine so I can see how hard its working, and generally anything over an amp is flirting with the potential for broken tooling. 1.5 when drilling a hole is pushing my luck. But I squeak too loud, nothing I say here should impinge on the ability of a machine with a multi-horsepower spindle from getting the job done quicker. I can always watch the ammeter & back off the feedrate. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
