On Wednesday 24 February 2016 04:49:09 Gene Heskett wrote: Ping?
> Greetings everybody; > > From the blog of a canary in a coal mine: A bug report. > > I am running the latest 2.8.0pre1 on all my live machines as I had > some probs with the early 2.6.x versions crashing so I switched to the > latest, which was stable at the time, and never switched back, and in > all this time I think this is my first real, I think I have found a > bug, observation. > > In the gcode I am working on ATM, the extant display of the X axis is > way off, high, the only X motion in this code is the width of the > chord of a curve less than 180 degrees of arc. Perhaps 1/2 to 3/4" > depending on how much past the edges of the workpiece the Y swing is. > The arc stands on end when the left Z axis is displayed, and does not > appreciably change if I change the R in the g3 line. Nor does it > change when I change the displayed view. There is some variation of > course, but I haven't tried to quantify it. TBE somewhat more exact, I shrank the display to get the displayed value into the window since when I have zoomed the display to only show the path, and the x "target" crosshair group is nominally 4.5" to the right, which is where the red X extant line ends. On a 2.7.4-sim, the display is correct. > I just checked this same code in the 2.7.4 sim-axis, and the x extant > displayed by that version is correct at nominally .65 inches, the > height of the chord + the x axis motion as it creeps up on the wanted > result. > > 2.8.0-pre1-1514-ge8151f0 displays this measurement as at least 2" > more, and has for the last 2 or more updates. > > Can a bug be raised on this? > > The code is pretty simple: > > ( roundover-strap.ngc - to do the compound curve smoothing on the top > ) ( outer edge of the "leather straps". The cutter is close to 4" OD > ) ( with a single tooth. The point to trim is where two curves meet on > ) ( the end of this part, and the vise is tipped to make that curved > but ) ( sharp edge junction into a straight horizontal line, nominally > 45 ) ( degrees that a std g3 motion about the Z axis can follow. ) > G20G17 > #<_r_factor> = 0.730000 > #<_y_in> = [#<_r_factor> *.950000] > #<_x_tmp> = 0.000000 > #<_z_tmp> = 0.000000 > G64 p.005 > > S2250 m3 > o100 WHILE [#<_x_tmp> lt 0.150] > #<_x_tmp> = [#<_x_tmp> +.002] > g1 F40 y-#<_y_in> > g1 f1 x#<_x_tmp> > g3 f10 y#<_y_in> r#<_r_factor> > > o100 ENDWHILE > M5 > M2 > > Thanks guys. > > Cheers, Gene Heskett Cheers, Gene Heskett -- "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> ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
