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1. 发明专利

JP2015021586A 焼結軸受及びその製造方法有权
标题翻译：烧结轴承及其制造方法
公开(公告)号：JP2015021586A
公开(公告)日：2015-02-02
申请号：JP2013151697
申请日：2013-07-22
申请人： Ntn株式会社 , Ntn Corp , Ntn株式会社
发明人： KURIMURA TETSUYA , ITO FUYUKI , KOMATSUBARA SHINJI , UCHIYAMA TADAHIRO
IPC分类号： F16C33/12 , B22F1/00 , B22F5/00 , C22C9/00 , F16C17/10
CPC分类号： F16C33/145 , B22F1/0003 , B22F1/0014 , B22F3/16 , B22F5/00 , B22F2301/10 , B22F2301/30 , B22F2301/35 , C22C1/0425 , C22C9/00 , C22C9/02 , F16C17/08 , F16C17/102 , F16C32/0633 , F16C33/104 , F16C33/128 , F16C2204/10 , F16C2370/12 , H02K7/08
摘要：【課題】焼結軸受の軸受面からの動圧抜けを十分に抑えて、軸受剛性を高める。【解決手段】銅粉末及び鉄粉末を含む混合金属粉末を用いて形成された焼結金属からなる焼結軸受であって、混合金属粉末が、平均粒径45μm未満の粒子を80wt%以上含み、銅粉末が電解銅粉を含み、該電解銅粉が、円形度0.64以上の粒子を40個数%以上含むものとする。【選択図】なし
摘要翻译：要解决的问题：通过充分抑制从烧结轴承的轴承表面的动态压力释放来提高轴承刚度。解决方案：烧结轴承包括通过使用含有铜粉和铁粉的混合金属粉末形成的烧结金属。在烧结轴承中，混合金属粉末含有平均粒径小于45μm的颗粒为80重量％; 铜粉含有电解铜粉; 电解铜粉末含有40数％以上的圆形度为0.64以上的微粒。

2. 发明专利

JP2013204072A Sintered metal bearing 有权
标题翻译：烧结金属轴承
公开(公告)号：JP2013204072A
公开(公告)日：2013-10-07
申请号：JP2012072527
申请日：2012-03-27
申请人： Ntn Corp , Ntn株式会社
发明人： KURIMURA TETSUYA , ITO FUYUKI , HORI SEIJI
IPC分类号： B22F5/00 , B22F1/00 , C22C33/02 , C22C38/00 , F16C17/10 , F16C33/12 , F16C33/14
摘要： PROBLEM TO BE SOLVED: To provide a copper-iron-based sintered metal bearing which can exhibit bearing performance equal to existing level or higher over a long period of time by achieving improvement in abrasion resistance and reduction in oil permeability at a low cost.SOLUTION: A sintered metal bearing is formed from a raw material powder essentially comprising a copper-based powder and an iron-based powder and has a radial bearing surface in the inner circumference. The copper-based powder used includes a fine copper powder which has such a particle size distribution that the proportion of particles having a diameter of less than 45 μm is 80 wt.% or more and occupies one-third by weight of the whole copper-based powder. A compressed body prepared by compression molding of the raw material powder is sintered at 900°C or more and 1,000°C or less.
摘要翻译：要解决的问题：提供一种铜 - 铁基烧结金属轴承，其通过以低成本实现耐磨性的提高和透油性的降低，能够长时间地显示出等于或高于现有水平的轴承性能。：烧结金属轴承由基本上包含铜基粉末和铁基粉末的原料粉末形成，并且在内周具有径向支承表面。使用的铜基粉末包括细小的铜粉末，其具有如下的粒径分布：直径小于45μm的颗粒的比例为80重量％以上，占整个铜 - 基粉末。通过原料粉末的压缩成形而制备的压缩体在900℃以上1000℃以下烧结。

3. 发明专利

JP2011074419A Method for producing sintered metal bearing 审中-公开
标题翻译：生产烧结金属轴承的方法
公开(公告)号：JP2011074419A
公开(公告)日：2011-04-14
申请号：JP2009224626
申请日：2009-09-29
申请人： Ntn Corp , Ntn株式会社
发明人： ITO FUYUKI , OKAMURA KAZUO
IPC分类号： B22F3/02 , B22F5/00 , F16C33/14
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a sintered metal bearing in which dimensions in the axial direction can be controlled with high precision.
SOLUTION: In a compacting stage S2, raw material powder is packed into a packing space formed so as to be divided by a die, a core pin and a lower punch, and thereafter, weight of the raw material powder in the packed state is measured. In a determination part, a difference between the measured weight and a target weight set in advance is calculated, and further, whether the weight difference is settled within a prescribed range determined on the basis of dimensional tolerance is determined. In the case it is determined that the weight difference is out of the above prescribed range, the lower punch is elevated or lowered in accordance with the weight difference so as to perform the adjustment of the packing amount. After the adjustment of the packing amount, the weight of the raw material powder in the packed state is measured once more, and packing amount adjustment and weight measurement are repeated till a difference between the remeasured weight and the target weight is settled within the prescribed range. In the case when it is determined that the weight difference is settled within the prescribed range, compacting by the upper punch is performed in a state where the packing amount is held so as to mold a compacted body.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供可以高精度地控制轴向尺寸的烧结金属轴承的制造方法。解决方案：在压实阶段S2中，将原料粉末填充到由模具，芯销和下冲头分开形成的包装空间中，然后将包装中的原料粉末的重量状态被测量。在确定部分中，计算预先设定的测量重量和目标重量之间的差，并且确定是否在基于尺寸公差确定的规定范围内确定重量差。在确定重量差在上述规定范围之外的情况下，下冲头根据重量差升高或降低，以进行包装量的调整。在调整填充量后，再次测量填充状态下的原料粉末的重量，重复包装量调整和重量测量，直到重新测量的重量与目标重量之间的差值在规定范围内。在确定重量差在规定范围内确定的情况下，在保持包装量以模制压实体的状态下，通过上冲头进行压实。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2011007336A Dynamic pressure bearing device and motor 审中-公开
标题翻译：动态压力轴承装置和电动机
公开(公告)号：JP2011007336A
公开(公告)日：2011-01-13
申请号：JP2010199728
申请日：2010-09-07
申请人： Ntn Corp , Ntn株式会社
发明人： SHIMIZU KAZUTO , ITO FUYUKI
IPC分类号： F16C17/10 , F16C33/10 , F16C33/12 , F16C33/74
摘要： PROBLEM TO BE SOLVED: To provide a dynamic pressure bearing device with high bearing rigidity at low cost.SOLUTION: A bearing sleeve 8 made of a sintered metal is fixed to a shaft member 2, and the bearing sleeve 8 is rotated together with the shaft member 2. Thus, a lubricating oil impregnated inside the bearing sleeve 8 is discharged to an outer diameter side (a radial bearing gap side) by a centrifugal force. This results in higher dynamic pressure effects and bearing rigidity.
摘要翻译：要解决的问题：以低成本提供具有高轴承刚性的动压轴承装置。解决方案：将由烧结金属制成的轴承套8固定到轴构件2，并且轴承套筒8与轴一起旋转因此，浸渍在轴承套筒8内的润滑油通过离心力排出到外径侧（径向轴承间隙侧）。这导致更高的动压效应和轴承刚度。

5. 发明专利

JP2011247281A Bearing member and fluid dynamic bearing device using the same 审中-公开
标题翻译：使用该轴承构件和流体动力轴承装置
公开(公告)号：JP2011247281A
公开(公告)日：2011-12-08
申请号：JP2010117577
申请日：2010-05-21
申请人： Ntn Corp , Ntn株式会社
发明人： HARADA KAZUNORI , BITO YOSHIHIKO , ITO FUYUKI
IPC分类号： F16C17/10 , F16C33/14
摘要： PROBLEM TO BE SOLVED: To prevent negative pressure at a low cost from arising in a central recessed space facing a central recess of a bearing member.SOLUTION: By means of forming the bearing member (bearing sleeve 8) having the central recess E from a sintered metal, it is possible to impregnate internal pores of the sintered metal with a lubricating oil. Consequently, when the lubricating oil in the central recessed space E0 is pulled toward a radial bearing gap and the pressure of the lubricating oil in the central recessed space E0 drops, the lubricating oil impregnated in the internal pores of the bearing sleeve 8 is supplied to the central recessed space E0 from surface holes of the central recess E, and thus negative pressure is prevented from arising.
摘要翻译：要解决的问题：为了防止在面向轴承构件的中心凹部的中心凹陷空间中出现低成本的负压。解决方案：通过从烧结金属形成具有中心凹部E的轴承部件（轴承套筒8），可以用润滑油浸渍烧结金属的内部孔。因此，当中心凹陷空间E0中的润滑油被拉向径向轴承间隙并且中心凹陷空间E0中的润滑油的压力下降时，浸渍在轴承套筒8的内部孔中的润滑油被供给到从中心凹部E的表面孔的中心凹陷空间E0，从而防止产生负压。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2011047005A Method of manufacturing bearing sleeve and fluid dynamic bearing device 审中-公开
标题翻译：制造轴承和流体动力轴承装置的方法
公开(公告)号：JP2011047005A
公开(公告)日：2011-03-10
申请号：JP2009196798
申请日：2009-08-27
申请人： Ntn Corp , Ntn株式会社
发明人： ITO FUYUKI , OKAMURA KAZUO , HIBI KENJI
IPC分类号： B22F3/02 , B21J5/00 , B21J5/06 , B21K1/10 , B22F5/00 , F16C17/02 , F16C33/14
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a hydrodynamic bearing by which difference in the dimensions of the inside diameter between both axial-direction end parts of a sintered stock is reduced to improve the rotational accuracy of the bearing.
SOLUTION: A method of manufacturing a cylindrical bearing sleeve is disclosed by which a sintered stock 11 formed in a sintering step is subjected to sizing using a die 13 and a pair of punches 14, 15 to form a cylindrical bearing sleeve which is fitted onto a bearing member 2 and has a radial bearing gap formed between the inner circumferential face of the sleeve and the outer circumferential face of the bearing member 2. In the sizing step, the sintered stock 11 is press-fitted to the die 13 by pressurizing force from one punch 14, then the other punch 15 is moved to the side of the one punch 14 to compress the sintered stock 11 in an axial direction.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种制造流体动力轴承的方法，通过该方法，减小了烧结坯料的两个轴向端部之间的内径的尺寸差异，以提高轴承的旋转精度。公开了一种制造圆柱形轴承套筒的方法，其中通过使用模具13和一对冲头14,15对烧结步骤中形成的烧结坯料11进行定径以形成圆柱形轴承套筒安装在轴承构件2上，并且在套筒的内周面和轴承构件2的外周面之间形成径向轴承间隙。在定型步骤中，烧结坯料11通过来自一个冲头14的加压力，则另一个冲头15移动到一个冲头14的侧面，以沿轴向压缩烧结坯料11。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2011033156A Sintered metal bearing and method of manufacturing the same 有权
标题翻译：烧结金属轴承及其制造方法
公开(公告)号：JP2011033156A
公开(公告)日：2011-02-17
申请号：JP2009181575
申请日：2009-08-04
申请人： Ntn Corp , Ntn株式会社
发明人： ITO FUYUKI , OKAMURA KAZUO
IPC分类号： F16C33/12 , B22F1/00 , B22F3/10 , B22F5/00 , F16C17/10 , F16C33/10 , F16C33/14
摘要： PROBLEM TO BE SOLVED: To provide a sintered metal bearing capable of achieving high resistance to wear and excellent sliding performance while reducing manufacturing cost.
SOLUTION: This sintered metal bearing is manufactured by using a material prepared by dispersing Cu system into Fe system and contains the Fe system ten times or more the Cu system by weight ratio, and the Cu system remains as a granular system. This sintered metal bearing is manufactured by compressing and molding raw material powders containing at least, for example, Cu powders and Fe powders ten times or more the Cu powders by weight ratio and then sintering this compressed and molded product at temperature of less than melting point of Cu.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够实现高耐磨性和优异的滑动性能同时降低制造成本的烧结金属轴承。
解决方案：该烧结金属轴承通过使用通过将Cu系分散在Fe体系中制备的材料制成，并且含有Fe体系的十倍以上的Cu体系重量比，并且Cu体系保持为粒状体系。这种烧结金属轴承通过将至少包含例如Cu粉末和Fe粉末的原料粉末按重量比压缩和成型为Cu粉末的十倍以上，然后在小于熔点的温度下烧结该压缩和模制产品来制造的铜。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2012177456A Sintered bearing and its manufacturing method 有权
标题翻译：烧结轴承及其制造方法
公开(公告)号：JP2012177456A
公开(公告)日：2012-09-13
申请号：JP2011041837
申请日：2011-02-28
申请人： Ntn Corp , Ntn株式会社
发明人： KURIMURA TETSUYA , HORI SEIJI , YAMASATO MASASHI , ARAI TAKAO , ITO FUYUKI
IPC分类号： F16C33/14 , F16C17/02 , F16C17/04
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C2370/12
摘要： PROBLEM TO BE SOLVED: To prevent the sag of hills in dynamic groove regions which are formed at the internal peripheral face of a sintered bearing, and to improve the rigidity of the bearing.SOLUTION: The annular hills 8a6, 8a7 for connecting ends of a plurality of inclined hills 8a3, 8a4 over entire peripheries of the hills are formed at least at one-end sides in axial directions of the dynamic groove regions formed at radial bearing faces A1, A2. By this, there are formed annular recesses 20a6, 20a7 which connect ends of inclined recesses 20a3, 20a4 which form the inclined hills 8a3, 8a4 out of molding metal molds 20a, 20b forming the dynamic groove regions, the ends of the inclined recesses 20a3, 20a4 are not brought into states that they are surrounded at three faces, thereby a material of a sintered body can easily enter the bearing, and thus the inclined hills 8a3, 8a4 can be accurately molded up to their ends.
摘要翻译：要解决的问题：为了防止形成在烧结轴承的内周面的动态槽区域中的山丘的下垂，并且提高轴承的刚性。解决方案：用于在山体的整个周边连接多个倾斜山丘8a3,8a4的端部的环形山脊8a6,8a7至少形成在径向轴承形成的动态槽区域的轴向方向上的一端侧面A1，A2。由此，形成有环形凹部20a6,20a7，其连接形成动态凹槽区域的模制金属模具20a，20b形成倾斜凹部8a3，8a4的倾斜凹部20a3，20a4的端部，倾斜凹部20a3， 20a4没有被形成为三面被包围的状态，因此烧结体的材料可以容易地进入轴承，因此可以将倾斜的山丘8a3,8a4精确地模制到其端部。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2012037026A Hydrodynamic bearing unit 有权
标题翻译：水动力轴承单元
公开(公告)号：JP2012037026A
公开(公告)日：2012-02-23
申请号：JP2010180426
申请日：2010-08-11
申请人： Ntn Corp , Ntn株式会社
发明人： ITO FUYUKI , HARADA KAZUNORI , YAMASHITA NOBUYOSHI , MINAMI AKIYUKI , SAWATSUBASHI TOSHIHISA
IPC分类号： F16C17/02 , F16C17/10 , F16C33/74 , G11B19/20
摘要： PROBLEM TO BE SOLVED: To protect the oil leak by making it easy to form a hub and setting up the volume of a seal space with high precision by preventing the deformation of a sealing face even if the hub is press fixed on the outer periphery of an axial member.SOLUTION: A seal member 9 is formed separately from the hub 3 on which a rotating body (disk D) is mounted and the seal space S is formed between the inner periphery 9b1 of this seal member 9 and the outer periphery 7a2 of the bearing member (A). That is, the mounting face which mounts the Disk D on the upper face 3c1 of a projection part 3c of the hub 3 and the seal face, which the seal space S is formed on the inner periphery 9b1 of the cylinder part 9b of the seal member 9, is formed.
摘要翻译：要解决的问题：为了通过容易地形成轮毂并且通过防止密封面的变形来高密度地设置密封空间的体积来保护油泄漏，即使轮毂被压固在轴向构件的外周。解决方案：密封构件9与安装有旋转体（盘D）的轮毂3分开形成，并且密封空间S形成在该密封构件9的内周面9b1和外侧周边7a2之间轴承部件（A）。也就是说，将盘D安装在轮毂3的突出部3c的上表面3c1上的密封面和密封空间S形成在密封件的圆筒部9b的内周9b1上的安装面构件9形成。版权所有（C）2012，JPO＆INPIT

10. 发明专利

JP2011074949A Fluid dynamic pressure bearing device 有权
标题翻译：流体动力压力轴承装置
公开(公告)号：JP2011074949A
公开(公告)日：2011-04-14
申请号：JP2009224603
申请日：2009-09-29
申请人： Ntn Corp , Ntn株式会社
发明人： ITO FUYUKI , OKAMURA KAZUO , SATOJI FUMITADA
IPC分类号： F16C33/12 , F16C17/02 , F16C33/14 , F16C35/02
CPC分类号： F16C33/128 , F16C2370/12
摘要： PROBLEM TO BE SOLVED: To provide a fluid dynamic pressure bearing device suppressing dimension change of an inner circumference surface of a bearing sleeve and having high radial direction bearing force. SOLUTION: Density of a sintered metal bearing sleeve is set in a range of 80-95% of true density and Young's modulus of the bearing sleeve is set to 70 GPa or higher. Dimension change of the inner circumference surface of the bearing sleeve is kept to 0.5 μm or less when a shaft member of 2-4 mm is supported, by not only increasing density of the bearing sleeve but also keeping Young's modulus 70 GPa or higher in such a manner. COPYRIGHT: (C)2011,JPO&INPIT

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