I'm looking for some input on what type of DC motor runs with the lowest amount on vibration. I'm gonna use a DC motor to drive a disc, called a lap, for polishing gemstones. Max speed will never exceed 1500rpm, and a huge amount of torque isn't really necessary. I originally built the machine using a v-belt pulley drive, but this setup had way to much wobble and vibration for it to be of use. I know it's possible to engineer a extremely smooth running drive train using pulleys, but that's not the way I'm tackling this project.
So now I'm trying to decide on which motor I want to use in a direct drive. As I'm set on using a DC motor(for a number of reasons), I've narrowed my choice between a couple different motors. Right now I'm leaning towards brushless permanent magnet motor because of size vs power and efficiency. The only negative is price and controls for the BLDC.
Second idea was for a stepper motor, nema 23 or 34. I've seen people use steppers in continuous rotation, but it's not something I've done before, only ever used them for stepping. Since my speed requirement in fairly low, I've been toying with the idea of using a stepper. Will running a stepper continuously cause excessive heat to the driver or motor? Would the motor run more smoothly than a basic brushed permanent magnet DC motor?
The third option, if all else fails, would be a basic pm DC motor, which are a good deal cheaper and easier to control.
So I'm looking for some suggestions as to which of these will best suit my needs. I don't have a huge budget to spend on a motor, but I believe that I can find a good fit for under $100.
So now I'm trying to decide on which motor I want to use in a direct drive. As I'm set on using a DC motor(for a number of reasons), I've narrowed my choice between a couple different motors. Right now I'm leaning towards brushless permanent magnet motor because of size vs power and efficiency. The only negative is price and controls for the BLDC.
Second idea was for a stepper motor, nema 23 or 34. I've seen people use steppers in continuous rotation, but it's not something I've done before, only ever used them for stepping. Since my speed requirement in fairly low, I've been toying with the idea of using a stepper. Will running a stepper continuously cause excessive heat to the driver or motor? Would the motor run more smoothly than a basic brushed permanent magnet DC motor?
The third option, if all else fails, would be a basic pm DC motor, which are a good deal cheaper and easier to control.
So I'm looking for some suggestions as to which of these will best suit my needs. I don't have a huge budget to spend on a motor, but I believe that I can find a good fit for under $100.