Chinese 2.2kW spindle - wow & flutter

[Davek0974]

I certainly intend running mine at 24k, its sold as a 24k spindle, my speeds and feeds calcs repeatedly ask for far higher rpm's sometimes up into the 40k's so 24k is pretty mediocre i think.

[Doddy]

Yes it's water cooled. My smallest end-mill is 0.2mm dia carbide - yes I'll be at 24k for some things. But not always. Other work would almost certainly be ali., and my test cut was at 10k rpm for an 8mm end-mill.


Now, if only I could get rid of the oscillation on the spindle speed!

Boyan has some reasonably good advice re. PSU, though I'll have to dig out the control box again (behind the compressor, hands-and-knees job) to check out the supply situation - I thought the BOB was on a separate supply.

If the 485 adapter pops through the door before I get to fall to hands-and-knees then I'm tempted with that as a solution (assuming I can get it to work) - the spindle controller is necessarily (physical size, as well as cooling) separate from the control box - removing the analogue side of things is no bad idea.