However, new digital drives incorporate advanced electronics that regenerate electrical energy back to the factory when decelerating the servo and spindle motors. When servo and spindle motors of a machine tool continuously accelerate and decelerate as they change speed and direction during machining, they use energy and, respectively, give off energy as heat. Modern FANUC CNCs are highly integrated and communicate over high-speed fiber optic cables to the servo and spindle system, which create the high-performance systems needed to deliver the smoothest surface finish on contoured surfaces.
If an older machine tool is communicating through an analog interface to the servo and spindle system, this will impact the speed and accuracy of the system. If the servo and spindle system can’t keep up with the CNC block processing rate, the tool path will not be accurate.
To get the most out of a CNC retrofit, upgrading the servo and spindle system to a high-speed, digital interface is critical.
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