专利名称：Linear motor and machine tool having the
same mounted thereon
发明人：Okada, Takuya,Ishiyama, Noritaka
申请号：EP07017229.1
申请日：20070903
公开号：EP1906514A2
公开日：
polarised20080402
专利内容由知识产权出版社提供
专利附图：
摘要：Linear motor (1 ) with permanent magnet mover (2) for use in a punching
machine. The permanent magnet mover is alternately polarised in axial direction. A small iron ring (13) around the permanent magnet mover (2) serves as a magnetic holder for
the vertical mover (2) when the machine is stopped. For the stop position the mover is shifted outside the stroke range (L) so that a high field gradient faces the ring (13). During punching operation the ring (13) is passed within a low field gradient region of the mover (2) in order to achieve a homogenous stroke force.
申请人：Murata Machinery, Ltd.,Gmc Hillstone Co. Ltd.
地址：3 Minami Ochiai-cho, Kisshoin, Minami-ku Kyoto-shi, Kyoto 6018326 JP,4466-1 Daimyojin, Oaza Tomizawa, Mogami-machi Mogami-gun, Yamagata JP
国籍：JP,JP
代理机构：Liedl, Christine
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