harryball
03-10-2008, 08:17 PM
Something changed when I upgraded to 3.5.5 and the bot began dwelling in corners too long. i.e.
When carving the 3D horse head it would exit the sweep, step, enter and sweep, exit, step etc... the steps were as long as 1 or 2 seconds where before they were smooth.
When cutting letters, when it approached some angles > 90 degrees it would have problems and go slow enough to burn the work.
When doing 3D tabs, again, on some it would go very slow leaving burn marks.
I checked everything, here are the values I was using...
3990
These are the same value I was running in 3.5.3 with no trouble. I'm running a PRT Alpha96 with the 7.2 upgrade.
I finally reset to default settings and the machine overall slowed down but was running much faster in the turns.
I discovered that if I set the XY Move Ramp Speed less than .4 the machine slows down on these turns, all other variables staying the same. The lower the number, the slower the turns.
The Minimum Dist to Check also has an impact, but not as dramatic. Lowering the number will speed up the turns slightly, but then the machine is banging around inside the cuts too badly.
I can set everything to default settings, change the XY Move Ramp speed to .1 and I see 90% of the problem crop up. If I also tune the Move Ramp Rate and the Jog Ramp rates back down to .1, the problem gets worse.
I'm not sure what is going on, I know with the 7.2 upgrade the suggested settings was .1 on these values. I don't know what changed from 3.5.3, it was working fine with that version. I even tried to downgrade and the problem persists.
I reloaded the firmware and double checked everything.
Ideas?
/RB
When carving the 3D horse head it would exit the sweep, step, enter and sweep, exit, step etc... the steps were as long as 1 or 2 seconds where before they were smooth.
When cutting letters, when it approached some angles > 90 degrees it would have problems and go slow enough to burn the work.
When doing 3D tabs, again, on some it would go very slow leaving burn marks.
I checked everything, here are the values I was using...
3990
These are the same value I was running in 3.5.3 with no trouble. I'm running a PRT Alpha96 with the 7.2 upgrade.
I finally reset to default settings and the machine overall slowed down but was running much faster in the turns.
I discovered that if I set the XY Move Ramp Speed less than .4 the machine slows down on these turns, all other variables staying the same. The lower the number, the slower the turns.
The Minimum Dist to Check also has an impact, but not as dramatic. Lowering the number will speed up the turns slightly, but then the machine is banging around inside the cuts too badly.
I can set everything to default settings, change the XY Move Ramp speed to .1 and I see 90% of the problem crop up. If I also tune the Move Ramp Rate and the Jog Ramp rates back down to .1, the problem gets worse.
I'm not sure what is going on, I know with the 7.2 upgrade the suggested settings was .1 on these values. I don't know what changed from 3.5.3, it was working fine with that version. I even tried to downgrade and the problem persists.
I reloaded the firmware and double checked everything.
Ideas?
/RB