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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
申请人： NSK Ltd.
CPC分类号： 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
摘要： 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：US20230160431A1
公开(公告)日：2023-05-25
申请号：US17912940
申请日：2021-07-06
申请人： NSK Ltd.
发明人： Kouhei MORI , Mizuki WATANABE , Isao SHINTOU , Hiroshi KOYAMA
摘要： A first piece (13) includes a first ring portion (13b) and a second ring portion (13c) which are arranged side by side in an axial direction and an inner diameter and an outer diameter of the first ring portion (13b) are respectively larger than an inner diameter and an outer diameter of the second ring portion (13c). A second piece (16) is obtained by pressing the first piece (13) while the first piece (13) is disposed between a first set and a second set.
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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
申请人： NSK LTD.
发明人： Kazuto KOBAYASHI , Hiroshi KOYAMA , Yuu YASUDA
CPC分类号： B21D28/36 , B21D28/00 , B21D28/02 , B21D28/28 , B21D51/16 , B21D53/16 , B21D53/84 , B21K1/30 , F16D23/025 , F16D23/06 , F16D2250/0023
摘要： 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：US20160114438A1
公开(公告)日：2016-04-28
申请号：US14786535
申请日：2014-04-22
申请人： NSK LTD.
CPC分类号： B23P15/003 , B21J1/003 , B21K1/04 , B21K1/40 , F16C33/581 , F16C33/585 , F16C33/62 , F16C33/64 , F16C2220/46
摘要： 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.
摘要翻译： 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
申请人： NSK Ltd.
CPC分类号： 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
摘要： 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
申请人： NSK LTD.
CPC分类号： B21K1/40 , B21J9/025 , B60B27/001 , B60B27/0031 , B60B27/0078 , B60B27/0084 , B60B2380/14 , F16C19/186 , F16C43/04 , F16C2220/46 , F16C2226/52 , F16C2326/02
摘要： 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：US20200009642A1
公开(公告)日：2020-01-09
申请号：US16490305
申请日：2018-02-28
申请人： NSK LTD.
摘要： Provided is construction which is able to downsize an orbital forging device comprising a spherical seat with shaft that swings and rotates with a molding die. The end section on the other side in the axial direction of the swinging shaft 13 is supported with respect to the driving mechanism 17 in a state where the movement toward one side in the axial direction (lower side) is prevented, and a member for preventing the swinging shaft 13 from moving toward the one side in the axial direction with respect to the frame 10 is not assembled in a section which is located between the convex spherical seat 14 and the driving mechanism 17 in the axial direction of the swinging shaft 13.
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8.发明申请公开(公告)号：US20190015916A1
公开(公告)日：2019-01-17
申请号：US16081291
申请日：2017-09-29
申请人： NSK LTD.
发明人： Masahito YAMAMOTO , Hiroshi KOYAMA
摘要： There is provided a method for processing a raceway groove configured to circumferentially form a to-be-processed side raceway groove on a surface to be processed of a workpiece, the to-be-processed side raceway groove is configured to be brought into rolling contact with a rolling element, and the surface to be processed is a cylindrical circumferential surface. The method for processing a raceway groove includes: arranging a processing rolling element rotatably between the to-be-processed side raceway groove and a tool side circumferential surface which is opposed to the surface to be processed and which is a cylindrical circumferential surface of a machining tool; rotating the machining tool relatively with respect to the workpiece; and performing a burnishing process on the to-be-processed side raceway groove.
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公开(公告)号：US20180043417A1
公开(公告)日：2018-02-15
申请号：US15553425
申请日：2016-02-29
申请人： NSK LTD.
CPC分类号： B21D53/10 , B21J9/025 , B21K1/30 , B21K1/40 , B21K1/765 , B60B27/00 , B60B27/0031 , B60B27/0084 , F16C19/186 , F16C43/04 , F16C2326/02 , F16D1/076 , F16D2003/22326
摘要： A rotary press device (33) includes a restriction section (36) configured to restrict a motion of a roll (30) around a central axis of a roll (30) against movement of the roll (30) around a central axis of a hub main body (8) during rotary forging. In an example, the restriction section (36) has guide teeth (44) meshed with teeth formed on a processing surface of the roll (30).
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