What am I doing WRONG???

[elalto]

Hi All,

I am using a drill cycle and am having trouble with the x axis losing it's place. I will issue a G00 X3.00 and I will get 3" of travel sometimes and something else other times. If I issue the same command six times I will get three different length moves. If I issue a G01 X3.00 I will get a consistance 3" move and a consistant return to zero. Am I moving too fast? How would I use a G01 in a G81 file with several moves? One of my files looks like this:

G0 G49 G40 G17 G80 G50 G90
G81 X0.0000 Y0.0000 Z-0.10 R-.1000 F250
X5.6350 Y3.4395 Z-.5600
X6.1250 Y3.1500 Z-.5600
X6.5950 Y3.4396 Z-.5600
G80
G28.1 X0.00 Y0.00
M30

Any help or suggestions will be much appreciated.

Thanks,

Marcos (elalto)

[ger21]

In the motor tuning, try cutting your acceleration and velocity by 25%. Do each one seperately, starting with accel.

[drawbar]

Originally Posted by elalto How would I use a G01 in a G81 file with several moves?

G01 is a modal G-code. That means once you set it, it stays that way until you change back to rapid feed, G00. So, on your first line of your example, if you change the G00 to a G01, all of your X - Y positioning moves will move at your set feedrate, which in your program is 250.

Brian