ATC module for ER20 spindles

[needleworks]

I'd love to know what software you are running to achieve that ! eg, how do you get a 20k spindle to run slow enough to start the threading process of the collets ?

[Daz]

I'd love to know what software you are running to achieve that ! eg, how do you get a 20k spindle to run slow enough to start the threading process of the collets ?

I am running LinuxCNC with a Digital Dream EC300 controller that was originally for March3, but I have converted it to LinuxCNC with Remora firmware. I have 2.2Kw spindle that goes up to 24k RPM. I don't remember exactly the RPM resolution, but it is better than 50RPM around the 1k RPM range I am using it for tool changing. The inverter is Huanyang 220v 2.2kw. With this setup, I can run the spindle backwards and forwards, from I think around 300 RPM (I would have to confirm that) all the way up to 24k RPM. After moving from Mach3 to LinuxCNC, the setup is rock solid. I had lots of problems with Mach3.