| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a linear motor for enhancing the processing speed of a laser processing system and realizing high speed high precision processing by reducing cogging force sharply. <P>SOLUTION: In the linear motor for use in a machine tool comprising a stator where a plurality of permanent magnets of identical profile are fixed to the opposite sides of a planar yoke, while spaced apart equally, such that different polarities are arranged alternately in the direction perpendicular to the moving direction of a mover, and an array of movers where movers each having an armature core applied with an armature coil are arranged oppositely to the array of permanent magnets on the opposite sides of the stator, the array of movers consists of three blocks of nine movers having a length eight times as long as the magnet pitch, i.e. the sum of the width of permanent magnet and the distance between permanent magnets, and applied with the armature coil of each phase for each set of three movers, and the interval of respective blocks is set equal to two third of the magnet pitch. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
