Servo motors
Posted: Wed Feb 08, 2012 11:30 pm
Researching building a gantry mounted laser with 48-60" X and maybe 36" Y. I happen to have 3 brushed servos on the shelf, and was thinking I could maybe use them, only problem is they are a bit large and would most likely be overkill. They are 87 oz/in per amp with a max 21 amp @ 65 volts. So it looks like the gecko G320X would drive them just fine. Thinking linear encoders, but haven't gotten that figured all out yet either.
I could see that they would probably stay cool running light loads of a laser with small amp, but just wondering what the drawbacks might be to using too large a motor. Would probably be able to push some nice acc/decel on the X axis and get nice speeds for engraving, but with a gantry mounted tube would have to limit the Y axis down a bit to be gentle on tube. Would most likley require some gearing down to the belt drives on laser but that shouldn't be a problem I don't think.
I could have access to a scope to tune them as well, though the knee mill I did a retrofit on years ago I can't recall using a scope to tune them so would have to look up how to do that again. Been awhile since I fiddled with this stuff.
Just looking for thoughts/ feedback to see if I'm nuts and should just by some smaller steppers and be done or if this would work and could possibly be better or at least use stuff I already have.
I could see that they would probably stay cool running light loads of a laser with small amp, but just wondering what the drawbacks might be to using too large a motor. Would probably be able to push some nice acc/decel on the X axis and get nice speeds for engraving, but with a gantry mounted tube would have to limit the Y axis down a bit to be gentle on tube. Would most likley require some gearing down to the belt drives on laser but that shouldn't be a problem I don't think.
I could have access to a scope to tune them as well, though the knee mill I did a retrofit on years ago I can't recall using a scope to tune them so would have to look up how to do that again. Been awhile since I fiddled with this stuff.
Just looking for thoughts/ feedback to see if I'm nuts and should just by some smaller steppers and be done or if this would work and could possibly be better or at least use stuff I already have.