Gantry machine progress

the G64 settings?
here is the code
N10 G0 Z96.
N20 Z96.
N30 X117.804 Y432.549 C0.
N40 Z91.
N50 X117.804 Y432.549 C0.
N60 G1 C60. F1500
N70 Z87. F50
N80 X-5.196 Y219.506 F500
N110 Z91.
N120 G0 Z96.
N130 X-5.196 Y219.506 C60.
N140 Z96.
N150 X-5.196 Y213.506 C60.
N160 Z91.
N170 X-5.196 Y213.506 C60.
N180 G1 C120. F1500
N190 Z87. F50
N200 X117.804 Y0.464 F500
N230 Z91.
N240 G0 Z96.
N250 X117.804 Y0.464 C120.
N260 Z96.
N270 X126. Y-1.732 C120.
N280 Z91.
N290 X126. Y-1.732 C120.
N300 G1 C210. F1500
N310 Z87. F50
N320 X495. Y211.31 F500
N350 Z91.
N360 G0 Z96.
N370 X495. Y211.31 C210.
N380 Z96.
N390 X495. Y221.703 C210.
N400 Z91.
N410 X495. Y221.703 C210.
N420 G1 C-30. F1500
N430 Z87. F50
N440 X126. Y434.745 F500
N470 Z91.
N480 G0 Z96.
N490 X126. Y434.745 C-30.
N500 M30

If you have not explicitly set G61 or G64Pn (n=some tolerance number), then the default setting is G64 with no tolerance. G64 with no tolerance equals maximum path blending, and if you would look at your cut from the side you will see that there is a significant curve in the end of your plung move as the machine begins to accelerate in the XY direction before the Z has finished it's plunge. Maximum blending will only slow the feed rate at corners enough so that the tool can touch at least one point of each segment. So for example on a machine with acceleration settings set so that it takes 10mm to reach the programed feed rate, and you programmed it to move in a 20mm square pattern, the machine would actually make a 20mm circle (with the exception of the first and last move). To correct this you can specify a tolerance for G64. Using something like G64P0.05 will limit the path blending to less than 0.05mm and the machine will slow down for corners and hold the programmed shape (to within the programmed tolerance.) Tune G64Pn to your desired balance between speed and precision and be sure to include it in the start of all of your g-code files.

if i add the G64P0.5 the lcnc will limit the blend of the move inplunge and feed rate in 0.5 of mm correct?
G64P0.5
N10 G0 Z96.
N20 Z96.
N30 X117.804 Y432.549 C0.
etc

You refer to the settings for the max velocity and max acceleration in the ini file(for each axis) ?

I have different values in each axis
x axis velocity =15000 acceleration=350
y axis velocity =7000 acceleration=150
z axis velocity =3000 acceleration=120
c axis velocity =5000 acceleration=150
how did you choose them?
when i tune the motors i choose the values to make the motion smooth

WOW... I'm no expert but.... Your machine would accelerate like a 92 year old man driving his old Chevy pickup.... Nice and smooth but terribly painful to watch.

Ηι
can you send me the values of your settings to compare?

Yannis wrote:

Ηι
can you send me the values of your settings to compare?

Sorry I'm not at that point yet.
But think about your numbers how many seconds would it take to get get to full speed?
Have a guess?

Let's calculate it.

t = (Vfinal - Vinitial)/a or for your X (15000 - 0) / 350 = 42.85 seconds.... OUCH

and travel how far?

s = Vinitial*t + 1/2(a * t(squared) = 0 + 1/2 (350 * 1836.12) = 321,321 mm or 321+ meters (I thought my table was big)

Again, take over the wheel from the old man and hit the gas petal.
I would start with 50% of max velocity... but I don't baby my truck (or any of my many other toys).