ENCODERS IN CNC MACHINES
ENCODERS IN CNC MACHINES Encoders are used in CNC machines to provide positional feedback while in use, to make sure the machine tool is operating with appropriate speed and accuracy for the job. An encoder is an electromechanical position feedback device that converts movement data into electrical signals. This digital feedback is used by a machine controller to determine position, speed or direction so it can issue commands to perform a specific function. Quantum Devices manufactures high-quality, high-performance incremental optical rotary encoders suitable for a wide range of motion control applications, including CNC machining. CNC machines use brushless direct current (BLCD) motors, which require electronic commutation. Rotary encoders in CNC machines provide real-time feedback about the angle of the BLDC motor shaft. Shaft angle data is sent to the servo drive, which switches currents to turn stator windings on and off, turning the rotor. Spindle speed Rotary encod...