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21. 发明专利

JP2004176831A Planetary roller type reduction gear 有权
公开(公告)号：JP2004176831A
公开(公告)日：2004-06-24
申请号：JP2002344818
申请日：2002-11-28
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： SONOBE HIROYUKI , SHIOZU ISAMU
IPC分类号： F16H15/56 , F16D11/10
摘要： PROBLEM TO BE SOLVED: To provide a planetary roller type reduction gear with low vibration and low noise which can be applied to a main spindle driver of a machine tool for providing a wide range of rotation by combination with a servomotor. SOLUTION: The planetary roller type reduction gear has two internal splines respectively selectively meshing with an external spline of an upstream transmission shaft and an external spline of a terminal transmission shaft, an axially slidable change-over shaft spline-connecting to a terminal output shaft is provided in a rear part, the change-over shaft is axially moved by a moving means for reciprocating a slide plate slidably fit in a groove provided in an outer circumference part of the change-over shaft by a cylinder, and the internal splines of the change-over shaft are meshed with either one of the external splines of the upstream or terminal transmission shaft. COPYRIGHT: (C)2004,JPO

22. 发明专利

JP2002106648A WORM REDUCTION GEAR, AND DUAL LEAD WORM REDUCTION GEAR OF SERVOMOTOR DIRECT COUPLING TYPE 失效
公开(公告)号：JP2002106648A
公开(公告)日：2002-04-10
申请号：JP2000297980
申请日：2000-09-29
申请人： MITSUBISHI HEAVY IND LTD
发明人： SHIOZU ISAMU
IPC分类号： F16H1/16
摘要： PROBLEM TO BE SOLVED: To reduce labor required for compacting a worm gear, reducing a cost, and adjusting the axial position of a dual lead worm. SOLUTION: An angular contact bearing 19 for constraining the axial direction of the dual lead worm 11 for a casing 15 is disposed on a servo motor 25 side, the angular contact bearing 19 is fastened and fixed by a dowel flange 26 for supporting a servomotor 25 and a bearing box 21 engaging with a through hole for mounting the worm of the casing 15, and an adjusting liner 22 sandwiched between the bearing box 21 and the side surface of the casing 15 adjusts a play clearance between each tooth of the dual lead worm 11 and each tooth of a worm gear 12. A bearing 17 on the side facing to the angular contact bearing 19 does not require adjustment of the bearing position, so that the labor for adjusting the axial position of the dual lead worm 11 can be reduced. The worm gear 12 engaging with a cylindrical part of an output shaft 13 is integrally adhered and fixed to the flange disposed on the output shaft 13 by frictional welding, so that the worm reduction gear can be compacted, and its cost can be reduced.

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