Sliding means with built-in moving-magnet linear motor

A sliding means with built-in moving-magnet linear motor, comprising a bed constituent one of paired members arranged for sliding movement relatively of each other, a table constituent another of the paired members, which is arranged movable lengthwise of the bed in a sliding manner with respect to the bed, a field magnet having unlike magnetic poles juxtaposed alternately in polarity in a moving direction of the table, an armature winding assembly having armature windings installed on the bed in opposition to the field magnet, a magnetic sensor elements installed on the bed in opposition to the field magnet to monitor a strength and direction of magnetic flux, and an auxiliary magnet arranged adjoining to any one of forward and aft end magnetic poles of the field magnet and magnetized in a polarity unlike the associated end pole, wherein a current in each armature winding interacts with magnetic flux created by the field magnet to produce an electromagnetic force to render propulsion to the field magnet to drive the table with a desired position control, and the auxiliary magnet makes up for the magnetic flux at the end pole of the field magnet, thereby making the magnetic sensor element detect an accurate position of the field magnet.