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1. 发明授权

US06505970B2 Thrust dynamic pressure bearing 有权
标题翻译：推力动压轴承
公开(公告)号：US06505970B2
公开(公告)日：2003-01-14
申请号：US09777794
申请日：2001-02-06
申请人： Takeshi Takahashi , Takeharu Ogimoto
发明人： Takeshi Takahashi , Takeharu Ogimoto
IPC分类号： F16C3206
CPC分类号： F16C33/107 , F16C17/045 , F16C17/08 , F16C17/102 , F16C17/107
摘要： It is an object of the invention to provide a thrust dynamic pressure bearing in which complex small holes or the like are not disposed so that the production cost is not increased, and negative-pressure suction which may be caused at start of rotation is prevented from occurring, thereby enabling the bearing to correctly function as a thrust dynamic pressure bearing. In solving means for the above, a rotor 1 in which thrust dynamic pressure generating grooves are formed in an end face, and a housing 2 which accommodates the rotor 1 in a hermetically sealed state with forming small gaps 3 and 4 therebetween are disposed. The gaps are filled with a working fluid L for generating a dynamic pressure. Pockets (1p, 2P) which serve as spaces for accumulating the working fluid are formed in the end face 1a of the rotor 1 and an end face 2a of the housing 2 that is opposed to the end face 1a, respectively. A total of capacities of the pockets is 50 times or more the capacity of the bearing gap 3 between the end face of the rotor 1 and the end face of the housing 2. Furthermore, the bearing gap 3 is inclinedly reduced as moving toward a radially outer side.
摘要翻译：本发明的目的是提供一种推力动压轴承，其中不设置复杂的小孔等，使得生产成本不增加，并且防止可能在旋转开始时引起的负压抽吸发生，从而使轴承能够正确地用作推力动压轴承。在上述解决方案中，在端面形成有推力动压发生槽的转子1和容纳转子1的壳体2 设置密封状态，在它们之间形成小的间隙3和4。间隙填充有用于产生动态压力的工作流体L. 在转子1的端面1a和与端面1a相对的壳体2的端面2a上分别形成有用作积存工作流体的空间的口袋（1p，2P）。凹穴的总容量是转子1的端面与壳体2的端面之间的轴承间隙3的容量的50倍以上。此外，轴承间隙3随着向径向移动而倾斜地减小外侧。

2. 发明申请

US20070183694A1 Performance judgment method for dynamic pressure bearing and dynamic pressure bearing 审中-公开
标题翻译：动压轴承和动压轴承的性能判断方法
公开(公告)号：US20070183694A1
公开(公告)日：2007-08-09
申请号：US11655906
申请日：2007-01-22
申请人： Takeharu Ogimoto , Masayoshi Onishi , Takeshi Takahashi , Yasuo Takamura , Shinji Matsue
发明人： Takeharu Ogimoto , Masayoshi Onishi , Takeshi Takahashi , Yasuo Takamura , Shinji Matsue
IPC分类号： F16C32/06
CPC分类号： G01M13/04
摘要： First, an axial clearance is measured. Next, lubricating oil is filled between a sleeve and a shaft, and the shaft is disposed such that a flange is positioned above a shank. Further, in a state where the shaft rotates at a rated rotation speed (a predetermined rotation speed), an axial clearance b between the flange and a surface facing a receiving surface of the flange through a flange housing space in the sleeve is measured. Finally, a dynamic pressure bearing satisfying the condition 0.3≦b/a≦0.55 is judged as a dynamic pressure bearing not having leakage of lubricating oil and abnormal abrasion.
摘要翻译：首先，测量轴向游隙。接下来，润滑油被填充在套筒和轴之间，并且轴被布置成使得凸缘位于柄上方。此外，在轴以额定转速（预定转速）旋转的状态下，测量凸缘与面对凸缘的容纳表面的表面之间的轴向间隙b，通过套筒中的凸缘容纳空间。最后，满足条件0.3 <= b / a <= 0.55的动态压力轴承被判定为没有润滑油泄漏和异常磨损的动压轴承。

3. 发明授权

US06556026B2 Fluid dynamic bearing evaluating method capable of quantitatively evaluating clearance between rotating member and fixed member in operation 失效
公开(公告)号：US06556026B2
公开(公告)日：2003-04-29
申请号：US09902753
申请日：2001-07-12
申请人： Takeharu Ogimoto , Takeshi Takahashi
发明人： Takeharu Ogimoto , Takeshi Takahashi
IPC分类号： G01M1500
CPC分类号： G01M13/04 , F16C33/10
摘要： There is provided a fluid dynamic bearing evaluating method capable of quantitatively observing a clearance between a shaft 3 and a housing 2 in an operating state and evaluating a fluid dynamic bearing 1 more in detail. This fluid dynamic bearing evaluating method is to evaluate the fluid dynamic bearing 1 by filling a space between the housing 2 and the shaft 3 with an uncharged lubricant, flowing a current through between the housing 2 and the shaft 3 and measuring an electrical resistance value of the fluid dynamic bearing 1 including the lubricant. According to this evaluating method, the lubricant placed between the housing 2 and the shaft 3 is not electrically charged, and therefore, the measured electrical resistance value has a correlation with the clearance between the housing 2 and the shaft 3, and the clearance can be quantitatively observed by this electrical resistance value.

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