Diy Brushless Spindle

[Jonathan]

The thing to do with your collection of spindles is index them ... rotary table on the Z-axis with the spindles each mounted 72° apart then just spin it to the one you want - like on a CNC lathe. That basically gets you an automatic tool changer. The only potentially difficult bit is locking the rotary table automatically...and maybe the wiring! Hmm you've given me a project now, as if I didn't have enough to make! Use some sort of rotary switch, or just 5 microswitches to activate each spindle automatically. Even snazzier is if the motors are similar you can use one ESC for the lot, and a bunch of relays to switch between spindles...

I should probably use mine more now I'm almost invariably cutting aluminium on my router. It's only 6000rpm (allegedly 6kW) though which is about half what I'd like...





How much difference do you think using the two double row bearings made versus one? Mine has one double row and something like (can't remember) 5 standard bearings.

[Jonathan]

This motor looks like the same as what you used, and it's cheap:

http://www.hobbyking.com/hobbyking/s...idProduct=5144

I'm tempted to get at least 3 of them, plus one ESC, and mount them all along with my existing spindle.

http://www.ebay.co.uk/itm/C10-ER20-1...ht_1682wt_1037

Could get a bit expensive...

[blackburn mark]

The thing to do with your collection of spindles is index them ...

hahaha! yep it did cross my mind man but i tend to use the 2000W spindle for almost everything i do and changing spindles is a moment of a job

How much difference do you think using the two double row bearings made versus one? Mine has one double row and something like (can't remember) 5 standard bearings.

i havnt cut anything with the new one yet jonathan, i was well happy with the old one, i belive it could out perform my machine with the single double row in it but as i was building a new one it seemed silly not to add the second bearing if i could suss a way of keeping the resses perfectly true.... it was a nice surprise when i fitted the shaft and there wasnt any extra friction due to missalignment (its a tough nut to crack)

it will be interesing to see if there is any inprovement but im sure the resonance paterns i get are from my gantry sides