Understanding Direct-Drive Technology in Machine Tools
Direct-drive systems have been applied to machine tools for decades, yet many builders and buyers of machine tools may not fully appreciate the advantages of these systems.
This succinct article discusses how an electric motor in a direct-drive system transmits force without a gearbox, toothed belt or other means to adjust speed mechanically. Having no intermediate drive train enables the motor to be an efficient, powerful, compact and precisely controllable means to run a spindle or axis drive.
The basics of electric-motor operation explain why a direct-drive system can outperform other means of driving and controlling power-transmission applications in machine tool design. However, it is necessary to work within the limitations of electric-motor technology and have a precise, reliable feedback device for control.