3X3 Gantry router/mill project

[jimbo]

very nice bloy2004, did you have any difficulties with the dual ballscrews? You did a nice job.

[Bloy2004]

Hi Jimbo,
The machine actually has dual rack and pinions for the "Y" axis. The "X" and "Z" axes use the standard single ballscrew. The picture below shows one side of the dual "Y" axis rack.

[jimbo]

sorry, thats what I meant. I was curious about any synch issues with the slaved motors, either physical or software.

[Bloy2004]

Jimbo,
The dual "slaved" "Y" axes are working just fine. AM running Mach3 at 75Khz and get 318 ipm on the dual "Y" setup.....More on the "X" and "Z".
I have 500 quad(2000) encoders on all motors.

Of course, I can't run that fast cutting with a small .125 two flute finish cut. But the rapids really make the machine shift around on it's soft casters. This was intended as the frame is made such a way that is doesn't flex with all its cross angles to make a rigid table. Actually this is easier on the operation during rapids ....like shock absorbers....the gantry moves one way suddenly, but the frame cushions the move as it recoils a bit oppositely. When it's cutting at full capacity, the whole machine is softly moving about minutely within a small footprint as the bit finds its way to its designated position.

In short, I am quite pleased with the performance.

[Bloy2004]

Originally Posted by rpage looks really nice!

Thanks!....