LINEAR MOTOR AND MACHINE TOOL HAVING THE MOTOR MOUNTED THEREON

摘要

PROBLEM TO BE SOLVED: To provide a linear motor that can prevent a magnet member from dropping with a simple structure when a power supply is turned off. SOLUTION: The linear motor includes a magnet member 2 composed of permanent magnets having alternately arranged respective N poles and S poles and a coil member 3 which surrounds a periphery of the magnet member 2 and through which the magnet member 2 is movable in an axial direction relative to the coil member 3. A magnetic substance 13 is provided in the vicinity of one end of the coil member 3 to exert a magnetic attractive force of the magnet member 2. COPYRIGHT: (C)2008,JPO&INPIT