So I have a CNC milling machine here that has a blown servo drive…
Since that servo drive is nearly 35 years old now it has become extremely hard to get documentation and pretty impossible to source replacement components I have been thinking about converting its drive system to something more modern… As this is a hobby machine (for me, anyway) I was looking for alternatives to a full blown industrial servo drive solution with new servos, so ODrive crossed my google. The questions I have though might be pretty basic, but not having touched the kind of hobby motors it relies on, or the drive itself, I have no way of answering them myself. So… does anyone have experience with hobby motors in fairly big industrial machines (my Mikron weighs in at about 1.7 tons)?
Secondly, does ODrive allow for motors with built in brake for a Z axis table? This one is fairly important, as without a brake the table would drop down when its not being held by the motor, and even when the motor is holding it the varying cutting forces might cause it to move, while also causing the motor to heat up and potentially turning it into a charred lump of copper and magnets in the process.
I also don’t have any idea about the constant power rating of the drive itself (can’t seem to find that anywhere), and I have to say I’m fairly skeptical when it comes to comparing its heatsinks to those found on industrial gear.
What am I hoping to get out of this? A working mill with hopefully faster travel speeds when not cutting, and not blowing up in my face, electronics wise.
Any input on this is appreciated.