Patent ID: 7170204

Claim:
A sliding device with onboard moving-magnet linear motor, comprising an elongated bed, a table movable for reciprocation in a lengthwise direction by virtue of a linear motion guide unit, a field magnet of magnet segments lying on a first surface of the table confronting the bed in a way unlike magnetic poles are juxtaposed alternately in polarity in a traveling direction of the table, and an armature assembly having coreless armature windings of rectangular shape, which are installed on a second surface of the bed confronting the table in opposition to the field magnet in lengthwise direction; wherein the bed an the table are made of magnetic material to provide magnet yoke and coil yoke for constituting a part of magnetic circuits, and the table is made on the first surface thereof with a first recess to set in place the field magnet of the magnet segments on the first surface, the first recess having a depth not more than a third a thickness of the field magnet.