Rapid moves G00

[dicksonhof]

Does anyone know how to slow down rapid moves. G00?

I tried tuning my stepper motors in mach2 but had no luck.

I'am using hobby cnc controls on one mchine and stepper world controls on my other machine. My stepper motors just can't handle rapid move. They screem. To fast.

[ger21]

Rapid moves are performed at the velocity in the motor tuning screen. Lower the velocity in motor tuning to slow down G00 moves.

[dicksonhof]

Thanks gewr21.

[Switcher]

Gerry,

Will Mach3 let you control G00, line by line with different "Feed" values in the g-code (program)?



Jerry






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[ger21]

No, because G00 doesn't use a feed rate. There is a rapid overide on the settings page, but it can't be changed during a program run.

You could replace your G00's with G1's and set the feedrates to whatever you want.

[Switcher]

No, because G00 doesn't use a feed rate. There is a rapid overide on the settings page, but it can't be changed during a program run.

Guess "Siemens 840D" spoiled me, being able to control G00 line by line!

You could replace your G00's with G1's and set the feedrates to whatever you want.

Yea thats what I was thinking, just add comments to make the rapids stand out in the program (easier to read).



Jerry





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[BobWarfield]

Help me out here: why do I want to change my rapids line by line?

Just curious. It would seem that rapids should be, well, rapid. Not cutting, so why does it matter to tune them on this basis?

Best,

BW

[Switcher]

Originally Posted by BobWarfield Help me out here: why do I want to change my rapids line by line? Just curious. It would seem that rapids should be, well, rapid. Not cutting, so why does it matter to tune them on this basis? Best, BW

Maybe I should have said " axis " instead of " line by line ".

What I was getting at, was I wouldn't want my " X-axis " & my " A-axis " to have the same rapid feedrate.

I run a 5-axis grinder at work (Siemens 840D), I was just comparing to Mach3.

I would like to have a 4-axis ( X,Y,Z, & A ) mill at home, just getting an idea what Mach3 offers.











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[ger21]

Each axis does have it's own rapid rate.

[BobWarfield]

To amplify on Gerry's point, each axis has individual motor tuning parameters that establish the maximum velocity (e.g. rapids rate, we need to get away from calling that the "feedrate") and acceleration curve.

So assuming you want to set it once to optimize for a particular machine, Mach 3 can do that axis by axis.

Best,

BW