专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明专利

JP2004004028A Bearing with absolute encoder 有权
标题翻译：支持绝对的编码器
公开(公告)号：JP2004004028A
公开(公告)日：2004-01-08
申请号：JP2003101396
申请日：2003-04-04
申请人： Ntn Corp , Ntn株式会社
发明人： FUJIKAWA YOSHIO , KOIKE TAKASHI , TAKAHASHI TORU , IWAMOTO KENICHI
IPC分类号： G01D5/245 , F16C41/00 , G01D5/18
摘要： PROBLEM TO BE SOLVED: To provide a low-priced and compact bearing with an absolute encoder capable of knowing an absolute rotation angle without performing initializing operation when power is turned on.
SOLUTION: This bearing with an encoder has a rolling bearing part 1 comprising a rotary-side bearing ring 2, a fixed-side bearing ring 3, and a rolling element 4. The bearing ring 2 is mounted with a detected part 7 whose magnetic characteristic is cyclically changed in a circumferential direction. The bearing ring 3 is mounted with a magnetism detection part 8 comprising a magnetic sensor that confronts the detected part 7. A magnetism detection circuit board 9 is provided for processing an output signal of the detection part 8 to output it to the exterior. The magnetic characteristic of the detection part 8 is changed with one revolution of the bearing ring 2 assumed as one cycle.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供具有能够知道绝对旋转角度的绝对编码器的低价格和紧凑的轴承，而不需要在接通电源时执行初始化操作。解决方案：具有编码器的该轴承具有包括旋转侧轴承环2，固定侧轴承圈3和滚动元件4的滚动轴承部1。轴承环2安装有检测部7 其磁特性在圆周方向周期性地变化。轴承环3安装有包括与所检测部分7相对的磁传感器的磁检测部分8.磁检测电路板9用于处理检测部分8的输出信号以将其输出到外部。检测部8的磁特性以轴承圈2的一圈作为一个周期而改变。版权所有（C）2004，JPO

52. 发明专利

JP2003301841A Hydrostatic gas bearing, and spindle device using the same 有权
标题翻译：静压气体轴承和使用它的主轴装置
公开(公告)号：JP2003301841A
公开(公告)日：2003-10-24
申请号：JP2002109288
申请日：2002-04-11
申请人： Ntn Corp , Ntn株式会社
发明人： FUJIKAWA YOSHIO , KUSUNOKI KIYOHISA , AONO KAZUYUKI , INOUE TATSU
IPC分类号： B23B19/02 , B23Q1/26 , B23Q1/38 , F16C32/06
CPC分类号： F16C32/0614
摘要： PROBLEM TO BE SOLVED: To improve the run-out accuracy of a hydrostatic gas bearing while securing static rigidity and compressed gas consumption similar to those in conventional devices.
SOLUTION: This hydrostatic gas bearing is provided with a main shaft 1, and journal bearings 7 and 8 provided with a plurality of gas feed lines 41a-41d in the axial direction each comprising a plurality of gas feed holes 31a-31d disposed at constant intervals in the circumferential direction. Compressed gas is jetted from the feed holes 31a-31d in the feed lines 41a-41d to the journal bearings 7 and 8, so that the main shaft 1 is rotatably supported in the diametral direction in a non-contact state. The feed hole 31b in the feed line 41b is disposed at a middle in the circumferential direction of the feed hole 31a in the feed line 41a. The feed hole 31d in the feed line 41d is disposed at a middle in the circumferential direction of the feed hole 31c in the feed line 41c.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提高静压气体轴承的跳动精度，同时确保静态刚度和压缩气体消耗与传统设备类似。解决方案：该静压气体轴承设置有主轴1和轴向轴承7,8，该轴颈轴承7,8在轴向上设置有多个气体供给管线41a-41d，每个气体供给管线41a-41d包括多个设置在气体供给孔31a-31d 在圆周方向上以恒定的间隔。压缩气体从进给管线41a-41d中的进给孔31a-31d喷射到轴颈轴承7和8，使得主轴1在非接触状态下沿直径方向可旋转地支撑。供给线41b的供给孔31b配置在供给线41a的供给孔31a的圆周方向的中间。供给线41d的供给孔31d配置在供给线41c的供给孔31c的圆周方向的中间。版权所有（C）2004，JPO

53. 发明专利

JP2003278751A Spindle device 审中-公开
标题翻译：主轴装置
公开(公告)号：JP2003278751A
公开(公告)日：2003-10-02
申请号：JP2002077847
申请日：2002-03-20
申请人： Ntn Corp , Ntn株式会社
发明人： FUJIKAWA YOSHIO , NISHIJIMA HIDEHIKO
IPC分类号： F16C17/10 , B05B15/00 , F16C27/02
摘要： PROBLEM TO BE SOLVED: To provide a spindle device wherein allowance of unbalance is improved, weigh the device is saved on, and of maintainability is improved.
SOLUTION: This spindle device is furnished with a rotation axis 1 having a head mounting part 1a on which an atomizing head 11 is mounted and a radial bearing 4 and a thrust bearing 5 to support the rotation axis 1 against a housing 2 free to rotate. The radial bearing 4 and the thrust bearing 5 are made into foil bearings. These foil bearings have bearing foils 23, 56 respectively having bearing surfaces to face the rotation axis 1 and elastic bodies 22, 53 to support the bearing foils 23, 56. The elastic bodies 22, 53 are, for example, made into an aggregate of metal fine lines. The radial bearing 4 and the thrust bearing 5 are respectively utilized with bearing housings 21, 51 and detachably mounted on a main body bearing housing 10.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供一种主轴装置，其中改善了不平衡的容许度，节省了设备的重量，并且提高了可维护性。解决方案：该主轴装置具有旋转轴线1，旋转轴线1具有头部安装部分1a，雾化头11安装在该头部安装部分1a上，径向轴承4和止推轴承5支撑旋转轴线1抵靠壳体2自由旋转径向轴承4和推力轴承5制成箔轴承。这些箔片轴承具有分别具有面向旋转轴线1的轴承表面和支撑轴承薄片23,56的弹性体22,53的轴承薄片23,56。弹性体22,53例如被制成金属细线。径向轴承4和推力轴承5分别与轴承座21,51一起使用，并可拆卸地安装在主体轴承座10上。版权所有（C）2004，JPO

54. 发明专利

JP2003262222A FOIL BEARING 审中-公开
公开(公告)号：JP2003262222A
公开(公告)日：2003-09-19
申请号：JP2002063001
申请日：2002-03-08
申请人： NTN TOYO BEARING CO LTD
发明人： NISHIJIMA HIDEHIKO , FUJIKAWA YOSHIO
IPC分类号： F16C27/02
摘要： PROBLEM TO BE SOLVED: To provide a foil bearing having a large load capacity and damping capability in a simple structure and allowing easy setting of a spring constant of an elastic body supporting a bearing foil in a wide range. SOLUTION: The foil bearing comprises a cylinder-shaped elastic body 2 formed by weaving thin metallic wires into a net and a thin-plated bearing foil 3 forming an elastic bearing surface S supported by the elastic body 2. The elastic body 2 is installed on a cylindrical internal diameter surface of a bearing housing 1 by press fitting or the like. A rotary shaft 4 is inserted in a bearing assembling body having such a constitution, and rotated. The elastic body 2 may be installed on the internal diameter surface of the bearing housing 1 by forming the elastic body in a rectangular sheet and rounding instead on forming the elastic body in a cylindrical shape. COPYRIGHT: (C)2003,JPO

55. 发明专利

JP2001140882A STATIC PRESSURE GAS BEARING DEVICE 失效
公开(公告)号：JP2001140882A
公开(公告)日：2001-05-22
申请号：JP31828499
申请日：1999-11-09
申请人： NTN TOYO BEARING CO LTD
发明人： FUJIKAWA YOSHIO , ITO TAKANOBU
IPC分类号： F16C32/06
摘要： PROBLEM TO BE SOLVED: To provide a static pressure gas bearing device, in which a rotating shaft is supported within a bearing housing by means of compressed gas without contact therebetween, and achieve rotational movement of high accuracy in a vacuum or decompressed atmosphere with or without a smaller number of vacuum pumps or vacuum pumps of lower performance than those used in devices of the prior art, by means of a non-contact seal which operates stably in a microclearance, which was impossible with the prior art devices. SOLUTION: The static pressure gas bearing device comprises the housing 4, the rotating shaft 5 freely rotationally supported within the housing 4 by a static pressure gas bearing, a drive means located at one end of the rotating shaft 5 for driving the rotating shaft 5, and the non-contact seal provided on the outer peripheral surface of the rotating shaft 5. The static pressure gas bearing has two static pressure gas bearing portions for axially supporting the rotating shaft, and the opposite surfaces of the housing 4 and the rotating shaft 5 form a bearing clearance 8 for one of the static pressure gas bearing portions and a clearance 18 for the non-contact seal, on the side closer to the outside of the housing 4. The bearing clearance 8 for the one of the static pressure gas bearing portions is smaller than another bearing clearance 9 for the other of the static pressure gas bearing portions.

56. 发明专利

JP2000002243A STATIC PRESSURE AIR BEARING DEVICE 失效
公开(公告)号：JP2000002243A
公开(公告)日：2000-01-07
申请号：JP16878198
申请日：1998-06-16
申请人： NTN TOYO BEARING CO LTD
发明人： FUJIKAWA YOSHIO
IPC分类号： F16C32/06
摘要： PROBLEM TO BE SOLVED: To heighten support rigidity and vibration damping performance by providing a pressurized space adjacent to a bearing gap, and keeping the compressed air in the pressurized space at higher pressure than the atmosphere in the periphery to increase the pressure in the whole of the bearing gap. SOLUTION: Peripheral groove-like pressurized spaces 5, 5' are provided adjacent to a bearing gap 3 at both ends in the axial direction of a bearing part 2, and the pressurized spaces 5, 5' are partitioned from the space outside the bearing by non-contact seal parts 6, 6'. The seal gaps 7, 7' of the non-contact seal parts 6, 6' are very small gaps equal to the bearing gap 3. Bearing exhaust flowing out of the bearing gap is throttled by the seal gaps 7, 7' so that the internal pressure in the pressurized spaces 5, 5' is kept at high pressure by the atmosphere outside the shaft. Thus, the pressurized spaces 5, 5' are provided to increase the pressure in the whole of the bearing gap 3, so that vibration damping performance can be improved.

57. 发明专利

JPH1171986A RECEIVING METHOD OF SHIELD MACHINE TO ARRIVAL SHAFT AND STRUCTURE OF RECEIVING SECTION OF SHIELD MACHINE IN ARRIVAL SHAFT 失效
公开(公告)号：JPH1171986A
公开(公告)日：1999-03-16
申请号：JP24753897
申请日：1997-08-29
申请人： KUMAGAI GUMI CO LTD , KUMAGAI TECHNOS KK
发明人： NAKAOKA FUMIO , WATANABE SHIGERU , YOSHIDA YUKINOBU , TERADA MICHIYASU , FUJIKAWA YOSHIO , KIDO YOSHIKAZU , OOISHI MASUHIRA
IPC分类号： E21D9/06
摘要： PROBLEM TO BE SOLVED: To use a hollow body having a small thickness size by installing cylindrical frozen soil and the hollow body. SOLUTION: Cylindrical frozen soil 24 is formed to the peripheral ground of the arrival shaft so as to be able to be communicated with a through-pit 14 and a hollow body 26 is arranged into the arrival shaft so as to be communicated with the through-pit 14 prior to the arrival of the shield machine 12 into the arrival shaft 10. The shield machine 12 excavates the interior wall surface of frozen soil 24 by propulsion, is passed through the through-pit 14 and is received into the hollow body 26.

58. 发明专利

JPH10165848A ROTARY ATOMIZING HEAD TYPE COATING DEVICE 失效
公开(公告)号：JPH10165848A
公开(公告)日：1998-06-23
申请号：JP34244996
申请日：1996-12-06
申请人： ABB IND KK , NTN TOYO BEARING CO LTD
发明人： KON SHIYOUSHIYUN , NAGAI KIMIYOSHI , FUJII SHOJI , FUJIKAWA YOSHIO
IPC分类号： B05B5/04 , B05B3/10
摘要： PROBLEM TO BE SOLVED: To prevent spark discharge from occurring between a material to be coated and a feed tube and to prevent the looseness of a rotary atomizing head to a rotating axis. SOLUTION: A feed tube 22 is formed of insulating resin material, and on the other hand, an internal thread part 21C is formed on a rotating axis 21, an atomizing head body 24 is provided with a fitting cylinder part 24B, and an external thread part 24H is formed on the fitting cylinder part 24B, allowing the fitting cylinder part 24B to be fitted in the rotating axis 21 to screw the external thread part 24H in the internal thread part 21C, causing the rotary atomizing head 23 to be fitted to the rotating axis 21. In this way, even when the rotary atomizing head 23 abnormally approaches a material to be coated, the material to the coated and the feed tube 22 are prevented from being short- circuited through each second hub hole 25B of a hub member 25. And by the fitting cylinder part 24B, sufficient insulating distance is secured between each second hub hole 25B and the rotating axis 21. Furthermore, the looseness between the rotating axis 21 and the rotary atomizing head 23 by centrifugal force is prevented.

59. 发明专利

JPH09166143A HYDROSTATIC AIR BEARING SPINDLE 失效
公开(公告)号：JPH09166143A
公开(公告)日：1997-06-24
申请号：JP32918995
申请日：1995-12-18
申请人： NTN TOYO BEARING CO LTD
发明人： FUJII SHOJI , YAMAZAKI SHIZUKA , FUJIKAWA YOSHIO
IPC分类号： F16C32/06
摘要： PROBLEM TO BE SOLVED: To simplify the feed passage of a bearing, to reduce the number of machining processes, and to improve rigidity of bearing part by effecting bearing air supply and turbine air supply from the mating housing side. SOLUTION: Air supply to bearing nozzles 2e, 2f, and 2g is effected through a bearing air supply port 9 formed in a mating housing Z, a peripheral groove 10 formed in the inside diameter wall of the mating housing Z, and bearing air supply passages 2h, 1i, and 2j. All the bearing air supply passages 2h, 2i, and 2j are communicated with a peripheral groove 10. Compressed air fed from a compressed air source to the bearing air supply port 9 of the mating housing Z flows through the peripheral grooves 10 to the bearing air supply passages 2h, 2i, and 2j and fed to bearing nozzles 2e, 2f, and 2g.

60. 发明专利

JPH08326753A STATIC PRESSURE AIR BEARING SPINDLE 失效
公开(公告)号：JPH08326753A
公开(公告)日：1996-12-10
申请号：JP13357295
申请日：1995-05-31
申请人： NTN TOYO BEARING CO LTD
发明人： FUJIKAWA YOSHIO , FUJII SHOJI
IPC分类号： B23B19/02 , F16C32/06
摘要： PURPOSE: To materialize weight reduction and compactification by forming a plurality of restriction holes, which open at the bearing face, within one section orthogonal to the axis, and an intake passage in polygonal form, which makes that restriction holes communicate with one another in the circumferential direction, in a housing, and charging compressed air into the space between the main shaft and a bearing face through the restriction holes so as to support the main shaft without contact. CONSTITUTION: The surface of the bore of a housing 2 is made a journal bearing face 2a opposed through very small journal bearing space to the external face of the main shaft 1, and a plurality of fine restriction holes 2c and 2d are opened here, and a plurality of fine restriction holes 2e are opened at a thrust bearing face 2b, and radial intake passages 2f and 2g, which make these communicate one another, axial intake passages 2h, and further a series of intake passages 2i in the shape of a polygon, which make the restriction holes 2c communicate with one another in the circumferential direction. By the above constitution, the intake passages can be made in the housing 2 of single member by boring, so the rigidity of the bearing and the rotational accuracy of a spindle can be improved, and weight reduction becomes possible by making the housing of low-specific gravity material and thinning it.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式