发明名称 BEARING FIXING NUT, STRUCTURE AND METHOD FOR FASTENING THE NUT, AND MAIN SPINDLE DEVICE FOR MACHINE TOOL USING THE SAME
摘要 PROBLEM TO BE SOLVED: To restrain stress concentration by centrifugal force in high speed operation, to reduce noise by a wind roar in the high speed operation, and to restrain deformation, a burr and a return due to fastening, while having a structure for locking a fastening tool on a nut. SOLUTION: At least two surfaces or more of plane parts 51a are formed on an outer peripheral surface of the bearing fixing nut 51 for fixing bearings 60 and 70. COPYRIGHT: (C)2010,JPO&INPIT
申请公布号 JP2010196833(A) 申请公布日期 2010.09.09
申请号 JP20090043730 申请日期 2009.02.26
申请人 NSK LTD 发明人 INAGAKI YOSHIFUMI;IWASAKI OSAMU
分类号 F16B23/00;B23B19/02;F16B37/00;F16C35/063 主分类号 F16B23/00
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