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公开(公告)号：US20180202495A1
公开(公告)日：2018-07-19
申请号：US15572581
申请日：2016-07-12
Applicant: NSK Ltd.
Inventor： Nobuyuki HAGIWARA , Kazuto KOBAYASHI , Isao SHINTOU , Hiroshi KOYAMA , Toshio NAKAMURA
CPC classification number: F16C43/08 , B21D39/00 , B21D39/023 , B21J5/12 , B21J9/02 , B21J9/025 , B21J9/027 , B21K1/04 , B21K1/30 , B21K1/40 , B21K1/765 , B21K25/00 , B60B35/02 , B60B35/1081 , F16C19/18 , F16C19/186 , F16C35/063 , F16C43/04 , F16C43/086 , F16C2226/52 , F16C2326/02 , F16D1/076
Abstract: A method of manufacturing a rotating bearing unit includes to cause one end surface in the axial direction of the forming punch (46), formed by combining a plurality of punch elements (46, 46) divided in the circumferential direction, which are displaceable in the axial direction and which are not displaceable in the circumferential direction, and having a processing teeth (44, 44) at one end surface in the axial direction, to face the other end surface of the caulking section (20) in the axial direction. In this state, rolls (30a) are rotated about the central axis (a) of the hub main body (8) while pressing the other end surface of the forming punch (46) in the axial direction with a pressing surface (43) of the roll (30a) having a central axis (β) that is inclined with respect to the central axis (α) of the hub main body (8).
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公开(公告)号：US20180128363A1
公开(公告)日：2018-05-10
申请号：US15575876
申请日：2016-08-25
Applicant: NSK LTD.
Inventor： Nobuyuki HAGIWARA , Yuuki MIZUSHIMA , Kazuto KOBAYASHI
Abstract: A steering rack includes a rack shaft (10), a plurality of rack teeth (11a) formed on the rack shaft and each having a tooth trace inclined with respect to a first direction perpendicular to an axial direction of the rack shaft, and a dummy tooth (33a) aligned with the rack teeth and formed on the rack shaft. The dummy tooth (33a) is non-uniformly formed in a second direction parallel to the tooth trace of the rack tooth (11a).
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公开(公告)号：US20170008551A1
公开(公告)日：2017-01-12
申请号：US15113204
申请日：2015-01-21
Applicant: NSK LTD.
Inventor： Yuuki MIZUSHIMA , Nobuyuki HAGIWARA , Kazuto KOBAYASHI
Abstract: A steering rack meshes with a pinion rotatably driven by the input shaft of a steering gear constituting an automotive steering device. The steering rack is provided with a an axially extending rod part of round cross section, and a plurality of rack teeth formed on a radial one side surface of an axial portion of the rod part, the rack teeth meshing with the pinion. At least one dummy tooth is formed in portions that are axial parts of the rod part and are adjacent to both axial sides of the plurality of rack teeth. The dummy tooth has a tooth height less than the rack teeth and does not mesh with the pinion.
Abstract translation: 转向架与由构成汽车转向装置的舵机的输入轴可旋转地驱动的小齿轮啮合。 转向齿条具有圆形横截面的轴向延伸的杆部分，以及形成在杆部分的轴向部分的径向一个侧表面上的多个齿条齿，齿条齿与齿轮啮合。 至少一个虚拟齿形成在作为杆部的轴向部分并且与多个齿条齿的两个轴向侧相邻的部分中。 假齿的齿高小于齿条齿，并且不与小齿轮啮合。
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公开(公告)号：US20180214925A1
公开(公告)日：2018-08-02
申请号：US15748901
申请日：2016-12-16
Applicant: NSK LTD.
Inventor： Kazuto KOBAYASHI , Hiroshi KOYAMA , Yuu YASUDA
CPC classification number: B21D28/36 , B21D28/00 , B21D28/02 , B21D28/28 , B21D51/16 , B21D53/16 , B21D53/84 , B21K1/30 , F16D23/025 , F16D23/06 , F16D2250/0023
Abstract: A method and a system for producing a ring-shaped member. A punching process is carried out on an axial intermediate part of a first intermediate annular material so as to produce a pair of ring-shaped members. A punching step includes a step in which a first punching process is carried out over a first range of the axial intermediate part in the circumferential direction, and a step in which a second punching process is carried out over a second range of the axially-oriented intermediate part, which is at least partially different than the first range, in the circumferential direction. The first punching process is carried out such that at least one tab is formed. The second punching process is carried out such that at least one separate tab is formed, thereby producing the pair of ring-shaped members.
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公开(公告)号：US20160368041A1
公开(公告)日：2016-12-22
申请号：US15122231
申请日：2015-03-09
Applicant: NSK Ltd.
Inventor： Kazuto KOBAYASHI , Yuu YASUDA
IPC: B21H1/12
CPC classification number: B21H1/12
Abstract: A rolling processing device and a rolling processing method are provided to be capable of producing annular members by rolling-forming three or more cylindrical members at the same time while reducing the possibility of breakage of a mandrel. For this purpose, a rolling processing device includes a forming roll, a support roll, and a mandrel. Plural workpieces are arranged on the mandrel alternately in the radial direction of the mandrel. The rolling processing method includes an arranging process for arranging the workpieces on the mandrel and a rolling process.
Abstract translation: 提供了一种轧制加工装置和轧制加工方法，其能够通过同时滚动形成三个或更多个圆柱形构件来生产环形构件，同时减少心轴断裂的可能性。 为此，轧制加工装置包括成形辊，支撑辊和心轴。 多个工件在心轴的径向方向交替设置在心轴上。 轧制处理方法包括将工件布置在心轴上的布置处理和轧制处理。
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Patent Agency Ranking
公开(公告)号：US20160114438A1
公开(公告)日：2016-04-28
申请号：US14786535
申请日：2014-04-22
Applicant: NSK LTD.
Inventor： Masahito YAMAMOTO , Hiroshi KOYAMA , Kazuto KOBAYASHI
CPC classification number: B23P15/003 , B21J1/003 , B21K1/04 , B21K1/40 , F16C33/581 , F16C33/585 , F16C33/62 , F16C33/64 , F16C2220/46
Abstract: Provided is a method for manufacturing a bearing ring member, whereby processing cost can be reduced and a high degree of freedom in design is obtained, by disposing a metal material of a raw material (13a), the metal material having excellent metal characteristics such as fatigue strength and wear resistance and excellent processing characteristics such as hardenability, in a portion that flows to a portion (raceway surface, etc.) where the characteristics of the metal material are required during use or forging of a bearing ring member. The present invention is configured from a first metal part (23) in which the raw material (13a) is formed in a cylindrical shape, and a second metal part (24) formed in a columnar shape by a metal material having more excellent metal characteristics or processing characteristics than the first metal part (23). For example, the second metal part (24) is disposed in a portion on an inside diameter side of the first metal part (23), which is a portion of the raw material (13a) that flows to an outer raceway (5a, 5b) of an outer ring (2) during forging.
Abstract translation: 提供一种制造轴承环构件的方法，通过设置原料（13a）的金属材料，具有优异的金属特性的金属材料（例如，金属材料），可以降低加工成本并获得高设计自由度 疲劳强度和耐磨性以及优良的加工特性如淬透性，在流动到在使用或锻造轴承环构件期间需要金属材料的特征的部分（滚道表面等）的部分中。 本发明由原料（13a）形成为圆筒状的第一金属部（23）和金属特性优异的金属材料形成为柱状的第二金属部（24）构成， 或加工特性比第一金属部件（23）。 例如，第二金属部件（24）设置在第一金属部件（23）的内径侧的部分，该第一金属部件（23）是流到外部滚道（5a，5b）的原料（13a）的一部分 ）锻造期间的外圈（2）。
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公开(公告)号：US20180169735A1
公开(公告)日：2018-06-21
申请号：US15570535
申请日：2016-07-04
Applicant: NSK Ltd.
Inventor： Nobuyuki HAGIWARA , Kazuto KOBAYASHI , Isao SHINTOU , Hiroshi KOYAMA , Toshio NAKAMURA
CPC classification number: B21D53/10 , B21J9/025 , B21K1/30 , B21K1/40 , B21K1/765 , B23B51/00 , B60B27/00 , B60B27/0005 , B60B27/0031 , B60B27/0036 , B60B27/0084 , F16C19/186 , F16C35/063 , F16C43/04 , F16C2226/52 , F16C2226/60 , F16C2326/02 , F16D1/076 , F16D3/226 , F16D2003/22326 , F16D2250/0023
Abstract: A method for manufacturing a rolling bearing unit is provided to periodically reciprocate a stage (38) in a vertical direction by rotating and driving a servo motor (44) while rotating a roll about a central axis of a hub main body using a roll driving motor (43) in a state in which a processing surface of the roll is pressed against other end surface of a caulking section in an axial direction. A period of the reciprocation is restricted by a relation between a rotation position of the roll about the central axis of the hub main body and an engaged state between concave sections, which are sections between a plurality of processed teeth formed in the processing surface of the roll, and a face spline tooth formed by the concave section.
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公开(公告)号：US20170209914A1
公开(公告)日：2017-07-27
申请号：US15328773
申请日：2015-07-24
Applicant: NSK LTD.
Inventor： Nobuyuki HAGIWARA , Toshio NAKAMURA , Hiroshi KOYAMA , Isao SHINTOU , Kazuto KOBAYASHI
CPC classification number: B21K1/40 , B21J9/025 , B60B27/001 , B60B27/0031 , B60B27/0078 , B60B27/0084 , B60B2380/14 , F16C19/186 , F16C43/04 , F16C2220/46 , F16C2226/52 , F16C2326/02
Abstract: Construction is achieved that is capable of preventing the formation of radial streaks in the tip-end surfaces of teeth of hub-side face splines 21. When a swing center distance is taken to be L, a swing angle that is the inclination angle of the center axis of a roll 30 with respect to a main hub body 8 is taken to be θ, the pitch diameter of the hub-side face splines 21 is taken to be Dh, the number of teeth of the hub-side face splines 21 is taken to be Nh, and the number of teeth of a processing surface 31 of the roll 30 is taken to be Nr, the position relationship of the main hub body 8 and the roll 30, or in other words, at least one of the swing center distance L, the swing angle θ, and the pitch circle diameter Dh is regulated so that the relationship Nh/Nr=cos θ+(2L/Dh)·sin θ is satisfied.
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公开(公告)号：US20170173658A1
公开(公告)日：2017-06-22
申请号：US15115698
申请日：2015-02-12
Applicant: NSK Ltd.
Inventor： Kazuto KOBAYASHI , Yuu YASUDA
Abstract: There is provided a method for manufacturing ring-shaped members at a good yield and high production efficiency. To achieve this object, the following is performed. A single (a sequence of) forging produces a joined body formed by radially coupling four cylindrical portions with different inner diameter sizes. A cylindrical member that has the largest inner diameter size and a cylindrical member that has the third largest inner diameter size after the forging are employed as ring-shaped members without change. A rolling process is performed on respective cylindrical member that has the smallest inner diameter size and cylindrical member that has the second largest inner diameter size to obtain ring-shaped members. Thus, two sets of ring-shaped members are obtained as two sets of inner rings and outer rings.
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10.发明申请公开(公告)号：US20180257131A1
公开(公告)日：2018-09-13
申请号：US15760315
申请日：2017-07-18
Applicant: NSK LTD.
Inventor： Kouhei MORI , Shunichi KARASAWA , Mizuki WATANABE , Kazuto KOBAYASHI
CPC classification number: B21K1/04 , B21J5/008 , B21J5/025 , B21J13/02 , B21K21/08 , B21K21/12 , B23P15/003 , F16C19/06 , F16C33/64 , F16C2220/46
Abstract: A method of manufacturing a cylindrical ring member includes a step of forming a metal intermediate material having a cylindrical portion and a chamfering step by cold forging in which a normal chamfer portion is formed on an axial end peripheral edge of the cylindrical portion by pressing a radial end portion of an axial end surface of the cylindrical portion against an annular chamfering surface provided in a mold configuring a mold device. A chamfering step is performed by cold forging in a state where a preliminary chamfer portion, of which a width dimension in a radial direction is larger than a width dimension of the normal chamfer portion in a radial direction, is formed on the axial end peripheral edge of the cylindrical portion.
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