Looking for advice on servo motors. In process of rebuilding my 4x8 machine, Upgrading from belt drive system, and i made the mistake of purchasing rm2005 for my y axis ball screws, so need the servos for the speed, but since they're so expensive in comparison to steppers i would like to get it right the first time. Im looking to cut wood and aluminum as fast as possible, ill be custom machining all my plates out of 1/2 aluminum using my buddies avid pro cnc, lots of 20x40 and 20x80 for my frame, y (2x) 2520mm rm2005 Ball screws, HYR20mm linear rails, HYH20CA Linear Blocks x 1280mm rm1605 ballscrew, HYR15mm, HYH15CA Linear Blocks z 300mm rm1605 ballscrew, HYR15mm, HYH15CA Linear Blocks 1.5kw spindle from makerstore just went out so most likely upgrading to 2.2kw watercooled spindle Curently running Blackbox 4 but possible upgrading to a duet3 board
I'd go with DMM DYN4 750Ws, personally, unless, since you only need a couple, you can find a nice pair of Mitsubishi or Yaskawas on eBay for cheap.
those do look nice but can be more expensive than the clearpaths, after power supplies and drivers, And do you think that much continuous torque would be necessary ?
Not more expensive for the same power level, generally speaking (it can be close sometimes, particularly with the DYN2s), though slightly more difficult to use and probably marginally less self-tuning. The complexity of servos comes when you try to tune them for the specific dynamics of your system, so if you can spring for Clearpaths, it'll probably save some headache down the line. Though I have heard good things about DMM's tuning software as well. If you're trying to mill metal fast, you're talking a lot of power, unless you're using quite small tooling with HSM strategy, but even then, maintaining torque at high speed and rapid directional changes may necessitate beefier motors- F=ma, after all.
