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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：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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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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