公开(公告)号：US10471555B2

公开(公告)日：2019-11-12

申请号：US15035270

申请日：2014-11-26

申请人： NSK Ltd.

发明人： Kazuto Kobayashi ,  Yuu Yasuda

IPC分类号： B23P15/00 ,  B23D21/00 ,  B21H1/12 ,  B21H7/18 ,  F16C33/64 ,  B21H1/06

摘要： A method for manufacturing an annular member includes: a cylindrical member forming step of forming a cylindrical member with an annular shape from a round bar material; and a cutting and separating step of cutting and separating the cylindrical member over an axial direction of the cylindrical member while rotating the cylindrical member, the cylindrical member being cut and separated by a shear force obtained by restraining molds, which apply an urging force to an outer circumferential surface of the cylindrical member, and by a restraining mold, which is provided with a gap on the outer circumferential surface of the cylindrical member, among a plurality of restraining molds provided on an inner circumferential surface side and an outer circumferential surface side of the cylindrical member along the axial direction, to obtain a plurality of annular members.

公开(公告)号：US20190201967A1

公开(公告)日：2019-07-04

申请号：US16295627

申请日：2019-03-07

申请人： NSK LTD.

发明人： Nobuyuki Hagiwara ,  Toshio Nakamura ,  Hiroshi Koyama ,  Isao Shintou ,  Kazuto Kobayashi

IPC分类号： B21D53/10 ,  B21K1/40 ,  F16C43/04 ,  F16D1/076 ,  B60B27/00 ,  B21K1/76 ,  B21K1/30 ,  B21J9/02 ,  F16C19/18

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).

公开(公告)号：US20150068264A1

公开(公告)日：2015-03-12

申请号：US14151272

申请日：2014-01-09

申请人： NSK, Ltd.

发明人： Kazuto Kobayashi ,  Hiroshi Koyama

IPC分类号： B23P15/00

CPC分类号： B23P15/003 ,  B21J1/00 ,  B21J1/04 ,  B21J1/06 ,  B21J5/025 ,  B21J5/10 ,  B21K1/04 ,  B21K21/02 ,  F16C19/184 ,  F16C33/64 ,  Y10T29/49636 ,  Y10T29/49643

摘要： When the column-shaped raw material 10 is subjected to an upsetting process, a simultaneous forward-backward extrusion process, a punching process, a rolling process and a finishing process in order, to obtain an outer ring 3 that constitutes a back-to back double-row angular ball bearing 3, in the simultaneous forward-backward extrusion process, using a floating die 31 having a bottom plate section 35 with a circular convex section 34 and a punch 33 having a punch side convex section 37 provided on an distal end thereof, the section closer to the center in the radial direction of the first intermediate material 11a is compressed in the axial direction, causing the metal material of the first intermediate material 11a to move outward in the radial direction and move approximately uniformly in both extrusion (forward and backward) direction of the punch 33, whereby the middle metal material 29 having a high degree of cleanliness of the column-shaped raw material 10 is exposed over the entire portion that will become the double-row outer-ring raceways 2.

摘要翻译： 当对柱状原料10进行镦锻处理，同时进行前后挤出处理，冲压加工，轧制处理和精加工时，为了得到构成背靠背的外圈3 双列角球轴承3在同时向前后退挤压工序中，使用具有圆形凸部34的底板部35的浮动模31和设置在前端的冲头侧凸部37的冲头33 第一中间材料11a的径向中心附近的部分沿轴向被压缩，导致第一中间材料11a的金属材料在径向方向上向外移动并且在两个挤出中大致均匀地移动 向前和向后）的方向，从而使柱状原料10具有高清洁度的中间金属材料29暴露在e 将成为双列外圈滚道的ntire部分2。

公开(公告)号：US10557505B2

公开(公告)日：2020-02-11

申请号：US15572581

申请日：2016-07-12

申请人： NSK Ltd.

发明人： Nobuyuki Hagiwara ,  Kazuto Kobayashi ,  Isao Shintou ,  Hiroshi Koyama ,  Toshio Nakamura

IPC分类号： B21J5/12 ,  B21J9/02 ,  B21K1/04 ,  B21K1/30 ,  B21D39/00 ,  B21D39/02 ,  B21K25/00 ,  F16C19/18 ,  F16C43/04 ,  F16C43/08 ,  F16C35/063 ,  B60B35/02 ,  B60B35/10

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 (α) 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).

公开(公告)号：US10391542B2

公开(公告)日：2019-08-27

申请号：US15570535

申请日：2016-07-04

申请人： NSK Ltd.

发明人： Nobuyuki Hagiwara ,  Kazuto Kobayashi ,  Isao Shintou ,  Hiroshi Koyama ,  Toshio Nakamura

IPC分类号： B60B27/00 ,  B23B51/00 ,  B21D53/10 ,  B21K1/40 ,  F16C43/04 ,  B21J9/02 ,  B21K1/30 ,  B21K1/76 ,  F16D1/076 ,  F16C19/18 ,  F16C35/063

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.

公开(公告)号：US20150204395A1

公开(公告)日：2015-07-23

申请号：US14422875

申请日：2013-07-24

申请人： NSK Ltd.

发明人： Hirofumi Mori ,  Kazuto Kobayashi

IPC分类号： F16D41/067

CPC分类号： F16D41/067 ,  F16C19/28 ,  F16D13/76 ,  F16D2041/0601 ,  F16D2300/02

摘要： Provided is a low-cost roller clutch equipped with support bearings having excellent transmission performance and durability and for which it is possible to surely prevent interference between component members. Of the component members of a roller clutch 10b, a first support bearing 29 and second support bearing 30, an outer-ring member 27 is common. A first race member 33, which functions as the inner ring of the first support bearing 29, and a clutch inner-ring member 28 are a single body. The clutch inner-ring member 28 and a second race member 34 of the second support bearing 30 are separate bodies. A clutch retainer 15b is held between the back-end sections of concave sections 19 of a cam surface 18 and the end edge of the second race member 34, and displacement in the axial direction of the clutch retainer 15b is suppressed. As a result, the clutch retainer 15b is prevented from hindering the rotation of the first support bearing 29 and second support bearing 30.

摘要翻译： 提供一种具有优异的传动性能和耐久性的支承轴承的低成本辊式离合器，并且能够可靠地防止部件之间的干涉。 在辊式离合器10b的构成部件中，第一支承轴承29和第二支承轴承30是外圈部件27。 用作第一支撑轴承29的内圈的第一座圈构件33和离合器内圈构件28是单体。 第二支撑轴承30的离合器内圈构件28和第二座圈构件34是分离的主体。 离合器保持器15b保持在凸轮表面18的凹部19的后端部和第二座圈构件34的端部边缘之间，并且抑制了离合器保持器15b的轴向位移。 结果，防止离合器保持器15b阻碍第一支撑轴承29和第二支撑轴承30的旋转。

公开(公告)号：US09080609B2

公开(公告)日：2015-07-14

申请号：US14394818

申请日：2013-04-16

申请人： NSK LTD.

发明人： Keita Itagaki ,  Yuuki Mizushima ,  Kazuto Kobayashi

IPC分类号： F16C33/42 ,  F16C33/38 ,  F16C33/46 ,  F16C19/06 ,  F16C43/04

CPC分类号： F16C33/38 ,  F16C19/06 ,  F16C33/427 ,  F16C33/467 ,  F16C43/04 ,  F16C2226/54 ,  F16C2240/40 ,  Y10T29/49691

摘要： Characteristics of joint sections using rivets 11a that join flat sections 12a, 12b of a pair of cage elements are improved regardless of differences in the volumes of the rivets 11a. A head section 16a and a crimped section 19a of a rivet 11a comprise flange sections 23a, 23b and convex sections 24a, 24b. The inside surfaces of the flange sections 23a, 23b press against the outside surfaces of the flat sections 12a, 12b. The convex sections 24a, 24b have a truncated cone shape with the maximum diameter being on the flange section 23a, 23b side. The diameter d24 of the apex of the convex sections 24a, 24b is equal to or less than the inner diameter R15 of circular holes 15, and the outer diameter D23 of the flange sections 23a, 23b is equal to or greater than the outer diameter D24 of the bottom section of the convex sections 24a, 24b. Furthermore, the amount of protrusion L23 that the flange sections 23a, 23b protrude from the convex sections 24a, 24b is equal to or less than two times the thickness T23 in the axial direction of the flange sections 23a, 23b.

摘要翻译： 无论铆钉11a的体积有多大变化，都能够提高使用铆接件11a的接合部的特性，该铆钉11a与一对保持架元件的平坦部12a，12b接合。 铆钉11a的头部16a和卷曲部19a包括凸缘部23a，23b和凸部24a，24b。 凸缘部分23a，23b的内表面压靠平面部分12a，12b的外表面。 凸部24a，24b具有截头圆锥形状，最大直径在凸缘部23a，23b侧。 凸部24a，24b的顶点的直径d24等于或小于圆形孔15的内径R15，凸缘部23a，23b的外径D23等于或大于外径D24 的凸部24a，24b的底部。 此外，凸缘部23a，23b从凸部24a，24b突出的突起量L23等于或小于凸缘部23a，23b的轴向厚度T23的两倍。

公开(公告)号：US11021184B2

公开(公告)日：2021-06-01

申请号：US16160139

申请日：2018-10-15

申请人： NSK LTD.

发明人： Yuuki Mizushima ,  Nobuyuki Hagiwara ,  Kazuto Kobayashi

IPC分类号： B62D3/12 ,  F16H19/04 ,  B21K1/76 ,  F16H55/26

摘要： A steering rack (11a) meshes with a pinion rotatably driven by the input shaft (6) of a steering gear (5) constituting an automotive steering device. The steering rack (11a) is provided with a an axially extending rod part (15) of round cross section, and a plurality of rack teeth (16) formed on a radial one side surface of an axial portion of the rod part (15), the rack teeth (16) meshing with the pinion. At least one dummy tooth (42) is formed in portions that are axial parts of the rod part (15) and are adjacent to both axial sides of the plurality of rack teeth (16). The dummy tooth (42) has a tooth height less than the rack teeth (16) and does not mesh with the pinion.

公开(公告)号：US10369612B2

公开(公告)日：2019-08-06

申请号：US15748901

申请日：2016-12-16

申请人： NSK LTD.

发明人： Kazuto Kobayashi ,  Hiroshi Koyama ,  Yuu Yasuda

IPC分类号： B21D28/00 ,  B21D28/36 ,  B21D28/28 ,  B21K1/30 ,  F16D23/06 ,  B21D51/16 ,  F16D23/02 ,  B21D28/02 ,  B21D53/16 ,  B21D53/84

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.

公开(公告)号：US10352429B2

公开(公告)日：2019-07-16

申请号：US15575876

申请日：2016-08-25

申请人： NSK LTD.

发明人： Nobuyuki Hagiwara ,  Yuuki Mizushima ,  Kazuto Kobayashi

IPC分类号： B21J5/02 ,  F16H55/26 ,  B21K1/76 ,  B62D3/12 ,  B21J13/02

摘要： 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).