Servo controller, spindle failure detection method using the servo controller and computer program

摘要

An arrangement is provided which can detect a spindle failure in a machine tool using an existing servo controller without the need for separate external sensors, failure analysis equipment or the like. A servo controller (22) for detecting a failure of a spindle of a machine tool with the spindle, a feed shaft, and a positioning servo motor installed on the feed shaft and prescribing the position of the spindle comprises: a feedback acquiring unit (222) including Receives feedback signal of the positioning servo motor; and an analysis / detection unit 226 that analyzes the obtained feedback signal to detect a failure of the spindle.