| 摘要 |
PROBLEM TO BE SOLVED: To provide a plurality of types of linear motor having different thrust while reducing the facility cost and enhancing productivity. SOLUTION: An annular groove 23 being fitted with a core member is formed in the inner circumferential surface part 22 of an outer yoke member 12. A core member 17A having a large thickness dimension in the radial direction can be fitted in the annular groove 23 without machining the annular groove 23. Since a linear motor 10 having a different thrust can be constituted using the outer yoke member 12 commonly without adding any extra machining facility or machining process for the outer yoke member 12, versatility and thereby productivity can be enhanced. Since no extra machining facility is required for the outer yoke member 12 in order to obtain a plurality of types of linear motor 10 having different thrust, facility cost can be reduced. COPYRIGHT: (C)2005,JPO&NCIPI
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