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1. 发明公开

EP4215770A1 BEARING DEVICE 审中-实审
公开(公告)号：EP4215770A1
公开(公告)日：2023-07-26
申请号：EP21869259.8
申请日：2021-09-08
申请人： NTN Corporation
发明人： HASHIZUME, Shohei , UEDA, Keiichi , HAMAKITA, Yasuyuki
IPC分类号： F16C19/16 , F16C35/12 , F16C41/00
摘要： A bearing apparatus (1) includes a housing (3) where a main spindle (4) is accommodated, a bearing (5a) including an inner ring (5ia) and an outer ring (5ga), the bearing (5a) supporting the main spindle (4) rotatably with respect to the housing (3), a retaining lid (10) fitted to an inside surface of the housing (3) while the retaining lid is in contact with an axial end surface of the housing (3) and an axial end surface of the outer ring (5ga), and a communication module (140) arranged in a region opposed to the retaining lid (10) with the bearing (5a) being interposed, the communication module (140) wirelessly communicating over electromagnetic waves. In a portion of the retaining lid (10) in contact with the housing (3), a non-metallic layer (10a) composed of ceramic which is a non-metallic material is provided.

2. 发明公开

EP2998870A1 BEARING PERFORMANCE AUTOMATIC CALCULATION SERVICE DEVICE 审中-公开
标题翻译： VORRICHTUNGFÜRDIENST ZUR AUTOMATISCHEN BERECHNUNG EINER LAGERLEISTUNG
公开(公告)号：EP2998870A1
公开(公告)日：2016-03-23
申请号：EP14797865.4
申请日：2014-04-21
申请人： NTN Corporation
发明人： TOYODA, Satomi , OHASHI, Naoshi , TAKIUCHI, Hiroshi , UEDA, Keiichi
IPC分类号： G06F13/00 , G06Q50/10
CPC分类号： H04L51/08 , G06Q10/107 , G06Q50/10 , H04L51/04
摘要： A bearing performance automatic calculation service device is provided which allows a user to receive an automatic calculation service at any time in any location, which easily ensures reliability in terms of leakage of transmitted/received data, and which is easily used in terms of an input operation. An e-mail address is assigned, which is used only for receiving a request for an automatic calculation service. It is determined whether authentication information and a description content of a file 5 attached to an e-mail 4 satisfy a condition. Evaluation of performance of a bearing with respect to a determined evaluation item by means of a calculation formula on the basis of the file is performed. A result of the evaluation to the file 5 is added to create a sending file. The sending file 5 is attached and sent back by the e-mail sending module 17.
摘要翻译：提供一种轴承性能自动计算服务装置，其允许用户在任何位置任何时间接收自动计算服务，这容易确保在发送/接收数据的泄漏方面的可靠性，并且在输入方面易于使用操作。分配一个电子邮件地址，仅用于接收自动计算服务的请求。确定附加到电子邮件4的文件5的认证信息和描述内容是否满足条件。执行通过基于文件的计算公式对所确定的评估项目的轴承性能的评估。添加对文件5的评估结果以创建发送文件。发送文件5由电子邮件发送模块17附加并发回。

3. 发明授权

EP3269477B1 MAIN SHAFT DEVICE 有权
公开(公告)号：EP3269477B1
公开(公告)日：2020-02-19
申请号：EP16761548.3
申请日：2016-02-29
申请人： NTN Corporation
发明人： MIZUTANI, Mamoru , UEDA, Keiichi
IPC分类号： B23B19/02 , B23Q11/12 , F16C19/16 , F16C19/28 , F16C19/56 , F16C33/32 , F16C33/34 , F16C35/12 , F16C37/00 , F16C19/50 , F16C33/30 , F16C19/54 , F16C19/52 , F16C33/58 , F16C35/063 , F16C35/067

4. 发明公开

EP4191083A1 BEARING DEVICE 审中-实审
公开(公告)号：EP4191083A1
公开(公告)日：2023-06-07
申请号：EP21848576.1
申请日：2021-07-21
申请人： NTN Corporation
发明人： HASHIZUME, Shohei , UEDA, Keiichi , HAMAKITA, Yasuyuki
IPC分类号： F16C19/52 , F16C41/00 , G08C17/00
摘要： A bearing apparatus (30) includes two bearings (5a, 5b) that rotatably support a main spindle (4), a spacer (6) arranged between the two bearings (5a, 5b), and a communication module (140) arranged in the spacer (6). The bearing (5a) includes an inner ring (5ia) and an outer ring (5ga) made of a metal and a plurality of rolling elements (Ta) arranged between the inner ring (5ia) and the outer ring (5ga). The communication module (140) contains a plurality of sensors and a communication apparatus that wirelessly transmits a result of detection by the sensors. An outer dimension (D1) of the inner ring (5ia) of the bearing (5a) is set to be smaller than an inner dimension (D2) of the outer ring (5ga) of the bearing (5a). The rolling element (Ta) is made of silicon nitride through which electromagnetic waves can pass.

5. 发明公开

EP3696434A1 COOLING STRUCTURE FOR BEARING DEVICE 审中-公开
公开(公告)号：EP3696434A1
公开(公告)日：2020-08-19
申请号：EP18865994.0
申请日：2018-10-05
申请人： NTN Corporation
发明人： UEDA, Keiichi , NASU, Keisuke
IPC分类号： F16C37/00 , F16C19/16
摘要： A bearing device (J) includes: a plurality of rolling bearings (1, 1); an outer ring spacer (4) and an inner ring spacer (5) interposed between the plurality of rolling bearings (1, 1). In a cooling structure for the bearing device (J), the outer ring spacer (4) has an inner peripheral surface provided with an annular recessed part (10), and the recessed part (10) has a bottom surface having an air supply opening (II) for compressed air. The outer ring spacer (4) has outer portions (16) of the inner peripheral surface with a cross-sectional shape having an increasing inner diameter toward axially outside, and each of the outer portions (16) of the inner peripheral surface has an axially outer end formed with an exhaust opening (17). The inner ring spacer (5) is opposed to the outer ring spacer (4) via throttle gaps (18). The outer peripheral surface of the inner ring spacer (5) is increasingly spaced from the outer portions (16) of the inner peripheral surface, from the throttle gaps (18) toward axially outside. The inner ring spacer (5) has axial ends each having an outer diameter larger than an outer diameter of axial ends of the inner rings (3) of the rolling bearings (1).

6. 发明公开

EP3269477A1 MAIN SHAFT DEVICE 审中-公开
标题翻译：主轴装置
公开(公告)号：EP3269477A1
公开(公告)日：2018-01-17
申请号：EP16761548.3
申请日：2016-02-29
申请人： NTN Corporation
发明人： MIZUTANI, Mamoru , UEDA, Keiichi
IPC分类号： B23B19/02 , B23Q11/12 , F16C19/16 , F16C19/28 , F16C19/56 , F16C33/32 , F16C33/34 , F16C33/64 , F16C35/067 , F16C35/12 , F16C37/00
摘要： This invention is applied to a spindle device used in, for example, a machine tool. The spindle device includes a double row cylindrical roller bearing (4) and a thrust load supporting bearing (5F, 5R) both interposed between a front side portion of a spindle (1) and a housing (2) and arranged from a front side end in this order. An amount of clearance of the roller row portion (4B) on the thrust load supporting bearing side is larger than that of the roller row portion (4A) on the counter thrust supporting bearing side. Engagement between the outer ring (42) of the double row cylindrical roller bearing (4) and a housing (2) is performed by clearance fit employed at the roller row portion (4B) on the thrust load supporting bearing side.
摘要翻译：本发明适用于例如在机床中使用的主轴装置。主轴装置包括两个圆柱滚子轴承（4）和推力载荷支承轴承（5F，5R），两个圆柱滚子轴承和推力载荷支承轴承（5F，5R）都插在主轴（1）的前侧部分与壳体（2）之间，并且从前侧端按此顺序。推力载荷支承轴承侧上的滚子列部分（4B）的间隙量大于反推力支承轴承侧上的滚子列部分（4A）的间隙量。双列圆柱滚子轴承（4）的外圈（42）与壳体（2）之间的接合通过在推力载荷支承轴承侧的辊列部分（4B）处采用的间隙配合来执行。

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