公开(公告)号：EP2444200B1

公开(公告)日：2019-08-21

申请号：EP10789284.6

申请日：2010-03-18

Applicant: NHK Spring Co., Ltd.

Inventor： TANGE, Akira ,  OKADA, Hideki ,  UESUGI, Motoi ,  HISANO, Yosuke

IPC: B24C1/10 ,  F16F1/02 ,  F16F1/06 ,  B21F35/00

公开(公告)号：EP2639328B1

公开(公告)日：2018-05-30

申请号：EP11839745.4

申请日：2011-10-21

Applicant: NHK Spring Co., Ltd.

Inventor： OKADA, Hideki ,  TANGE, Akira ,  TANGO, Koichi ,  SUMIYOSHI, Isao

IPC: C21D8/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/42 ,  F16F1/02 ,  C21D7/06 ,  C21D9/02 ,  C22C38/50 ,  C21D9/52 ,  C22C38/20 ,  C22C38/28 ,  C22C38/46

CPC classification number: F16F1/021 ,  C21D7/06 ,  C21D8/06 ,  C21D8/065 ,  C21D9/02 ,  C21D9/52 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/28 ,  C22C38/34 ,  C22C38/42 ,  C22C38/46 ,  C22C38/50 ,  F16F1/02

Abstract: A steel for high-strength spring has an Ac 3 transformation temperature as an indicator of the decarburization performance, which is calculated by Equation (1) below, is from 859 to 885°C, a maximum hardened diameter DI as an indicator of the hardening performance, which is calculated by Equation (2) below, is from 70 to 238 mm, and a temper hardness HRC as an indicator of the spring performance, which is calculated by Equation (3) below, is from 50 to 55. wherein, D 0 = 8.65 × C , f Si =1+0.64×Si, f Mn =1+4.10×%Mn, f P =1+2.83×%P, f S =1-0.62×%S, f Cu =1+0.27×%Cu, f Ni =1+0.52×%Ni, and f Cr =1+2.33×%Cr.

公开(公告)号：EP3184242A1

公开(公告)日：2017-06-28

申请号：EP15834152.9

申请日：2015-06-09

Applicant: NHK Spring Co., Ltd.

Inventor： MORIYAMA, Senri ,  AKIYAMA, Satoshi ,  KOMAZAKI, Masaya ,  NAGAYASU, Go ,  OKADA, Hideki ,  YOKOTA, Daisuke

IPC: B24C1/10 ,  B24C3/24 ,  F16F1/02

CPC classification number: B24C1/10 ,  B24C3/24 ,  F16F1/02 ,  F16F1/04

Abstract: A vertical motion impeller-type shot peening device (50) performs a second shot peening to a coil spring (10) including first shot peening indentations (20). The vertical motion impeller-type shot peening device (50) includes a workpiece holding mechanism (52) including a lower end turn support (84, 85) and an upper end turn support (95, 96), a stress applying mechanism (90) which compresses the coil spring (10), a rotation mechanism (100) which allows the coil spring (10) to rotate around the vertical axis, and a projection mechanism (57) which includes a pair of vertically movable impeller units (55, 56). A first rough surface (21) including first shot peening indentations (20) is formed on a part of end turn portions (10a, 10b) of the coil spring (10). A second rough surface (31) including second shot peening indentations (30) is formed on the entire surface of wire (11) except for the first rough surface (21).

Abstract translation: 垂直运动叶轮式喷丸装置（50）对包括第一喷丸硬化压痕（20）的螺旋弹簧（10）执行第二喷丸。 上下运动叶轮式喷丸装置（50）包括：包括下端匝支承件（84,85）和上端匝支承件（95,96）的工件保持机构（52）;应力施加机构（90） 压缩螺旋弹簧10的旋转机构100，使螺旋弹簧10绕垂直轴旋转的旋转机构100和包括一对可垂直移动的叶轮单元55,56的投射机构57， ）。 包括第一喷丸压痕（20）的第一粗糙表面（21）形成在螺旋弹簧（10）的一部分端部转弯部分（10a，10b）上。 包括第二喷丸硬化凹痕（30）的第二粗糙表面（31）形成在除第一粗糙表面（21）之外的金属丝（11）的整个表面上。

公开(公告)号：EP2416031B1

公开(公告)日：2016-11-16

申请号：EP10758437.7

申请日：2010-03-18

Applicant: NHK Spring Co., Ltd.

Inventor： HAMANO, Toshio ,  OKADA, Hideki ,  YAMAMOTOYA, Kenji

IPC: F16F1/06 ,  B21F3/04 ,  B21F35/00 ,  F16F1/02

CPC classification number: B21F3/04 ,  B21F35/00 ,  F16F1/04

公开(公告)号：EP2444200A1

公开(公告)日：2012-04-25

申请号：EP10789284.6

申请日：2010-03-18

Applicant: NHK Spring Co., Ltd.

Inventor： TANGE, Akira ,  OKADA, Hideki ,  UESUGI, Motoi ,  HISANO, Yosuke

IPC: B24C1/10 ,  F16F1/02 ,  F16F1/06 ,  B21F35/00

CPC classification number: B21F35/00 ,  B21F99/00 ,  B24C1/10

Abstract: A spring wire (20) is subjected to a first shot peening process (S6) and a second shot peening process (S7). In the first shot peening process (S6), a first shot is projected on the spring wire (20) at a first projectile speed. High kinetic energy of the first shot produces compressive residual stress in a region ranging from the surface of the spring wire (20) to a deep position. In the second spring wire process (S7), a second shot is projected at a second projectile speed lower than the speed of the first shot. The kinetic energy of the second shot is lower than that of the first shot. The low kinetic energy of the second shot increases the compressive residual stress in a region near the surface of the spring wire (20).

Abstract translation: 对弹簧丝（20）进行第一喷丸硬化处理（S6）和第二喷丸硬化处理（S7）。 在第一喷丸硬化处理（S6）中，以弹射线的第一弹丸速度投射弹簧丝（20）。 第一次射击的高动能在从弹簧丝（20）的表面到深位置的区域中产生压缩残余应力。 在第二弹簧丝加工（S7）中，以比第一弹丸的速度低的第二弹丸速度投射第二射击。 第二枪的动能低于第一枪的动能。 第二次射击的低动能增加了弹簧丝（20）表面附近区域的压缩残余应力。

公开(公告)号：EP3231644A1

公开(公告)日：2017-10-18

申请号：EP15868473.8

申请日：2015-12-04

Applicant: NHK Spring Co., Ltd.

Inventor： KUWATSUKA, Shinichiro ,  OKUDAIRA, Yurika ,  TANGE, Akira ,  OKADA, Hideki ,  TAKAHASHI, Ken

IPC: B60G21/055 ,  B24C1/10 ,  C21D7/06 ,  C21D9/00 ,  C22C38/00 ,  C22C38/04 ,  C22C38/60 ,  F16F1/14 ,  C21D1/60 ,  C21D8/06

CPC classification number: C21D9/0068 ,  B21D47/00 ,  B21D53/88 ,  B24C1/10 ,  B60G21/055 ,  B60G2206/427 ,  B60G2206/724 ,  B60G2206/81035 ,  B60G2206/8402 ,  B60G2206/8403 ,  C21D1/60 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D7/06 ,  C21D8/065 ,  C21D9/0075 ,  C21D9/02 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C22C38/60 ,  F16F1/14

Abstract: This stabilizer (1) is formed using a solid metal rod, is for suppressing left/right wheel displacement, and is provided extending in the vehicle width direction. The diameter of a torsion section (1a) that twist-deforms is 10-32 mm. The stabilizer has a chemical composition including at least 0.15%-0.39% by mass C and including at least Mn, B, and Fe. At least 90% of the metal structure thereof has a martensite structure.

Abstract translation: 该稳定器（1）由固体金属棒形成，用于抑制左右轮的位移，并且设置成在车宽方向上延伸。 扭转变形的扭转部分（1a）的直径为10-32mm。 稳定剂具有包含至少0.15％至0.39质量％C且至少包含Mn，B和Fe的化学组成。 其金属结构的至少90％具有马氏体结构。

公开(公告)号：EP2639328A1

公开(公告)日：2013-09-18

申请号：EP11839745.4

申请日：2011-10-21

Applicant: NHK Spring Co., Ltd.

Inventor： OKADA, Hideki ,  TANGE, Akira ,  TANGO, Koichi ,  SUMIYOSHI, Isao

IPC: C22C38/50 ,  C21D7/06 ,  C21D9/02 ,  F16F1/06

CPC classification number: F16F1/021 ,  C21D7/06 ,  C21D8/06 ,  C21D8/065 ,  C21D9/02 ,  C21D9/52 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/28 ,  C22C38/34 ,  C22C38/42 ,  C22C38/46 ,  C22C38/50 ,  F16F1/02

Abstract: A steel for high-strength spring has an Ac 3 transformation temperature as an indicator of the decarburization performance, which is calculated by Equation (1) below, is from 859 to 885°C, a maximum hardened diameter DI as an indicator of the hardening performance, which is calculated by Equation (2) below, is from 70 to 238 mm, and a temper hardness HRC as an indicator of the spring performance, which is calculated by Equation (3) below, is from 50 to 55.



wherein, D 0 = 8.65 × C , f Si =1+0.64×Si, f Mn =1+4.10×%Mn, f P =1+2.83×%P, f S =1-0.62×%S, f Cu =1+0.27×%Cu, f Ni =1+0.52×%Ni, and f Cr =1+2.33×%Cr.

Abstract translation: 一种用于高强度弹簧钢具有Ac3相变温度如在脱碳性能的指标，在​​所有这是由方程（1）的下方，是从859至885℃的最大硬化直径DI计算为硬化的指示器 这是由方程计算性能，在所有（2）所示，是从70至238毫米，和回火硬度HRC如弹簧性能，所有的指示器，其由等式（3）计算的下方，为50〜55 worin， D 0 = 8.65×C，硅F = 1 + 0.64×硅，锰= F 1 + 4.10×％的Mn，P F = 1 + 2.83×％S = F×1-0.62％S，F的Cu P，= 1 + 0:27×％铜，镍F = 1 + 0:52×％的Ni，及Cr F = 1 + 2:33×％的Cr。

公开(公告)号：EP2416031A1

公开(公告)日：2012-02-08

申请号：EP10758437.7

申请日：2010-03-18

Applicant: NHK Spring Co., Ltd.

Inventor： HAMANO, Toshio ,  OKADA, Hideki ,  YAMAMOTOYA, Kenji

IPC: F16F1/06 ,  B21F3/04 ,  B21F35/00 ,  F16F1/02

CPC classification number: B21F3/04 ,  B21F35/00 ,  F16F1/04

Abstract: Bending deformation exceeding a yield stress is applied by winding a material for a coil spring on a mandrel at a temperature at which spring-back occurs. Coiling is performed simultaneously with the application of the bending deformation, and the load is removed after the coiling. This spring includes an outside surface region (W3) having a compressive residual stress and a compressive stress reduction region (W4) in which the compressive residual stress is reduced from the outside surface region (W3) toward the center of the material. A stress change portion (P1) at which a change from the compressive residual stress to a tensile residual stress occurs exists between the outside surface region (W3) and the center of the material. The spring further includes a tensile stress peak portion (P2), tensile stress reduction region (W5), and inside surface region (W6). The inside surface region (W6) has the tensile or compressive residual stress having an absolute value smaller than that of the outside surface region (W3).

Abstract translation: 通过在发生回弹的温度下将用于螺旋弹簧的材料卷绕在心轴上来施加超过屈服应力的弯曲变形。 在施加弯曲变形的同时进行卷取，并且在卷取之后除去负载。 该弹簧包括具有压缩残余应力的外表面区域（W3）和压缩残余应力从外表面区域（W3）朝向材料的中心减小的压缩应力减小区域（W4）。 在外表面区域（W3）和材料的中心之间存在从压缩残余应力向拉伸残余应力的变化的应力变化部（P1）。 弹簧还包括拉伸应力峰值部分（P2），拉伸应力减小区域（W5）和内表面区域（W6）。 内表面区域（W6）的拉伸或压缩残余应力的绝对值小于外表面区域（W3）的绝对值。

公开(公告)号：EP4364868A1

公开(公告)日：2024-05-08

申请号：EP22833060.1

申请日：2022-06-27

Applicant: NHK Spring Co., Ltd.

Inventor： OKADA, Hideki ,  YAMAUCHI, Yuichiro ,  TANAKA, Ryo ,  SUZUKI, Takeshi ,  SHIBAIRI, Kosuke

IPC: B21F35/00 ,  C21D7/06 ,  C21D9/02 ,  C21D1/34 ,  C21D1/40 ,  B60G3/28 ,  F16F1/02 ,  F16F1/06 ,  F16F1/12

CPC classification number: B21F35/00 ,  B60G3/28 ,  C21D1/34 ,  C21D9/02 ,  F16F1/02 ,  F16F1/06 ,  F16F1/12 ,  C21D1/40 ,  C21D7/06

Abstract: According to an embodiment, a coil spring is formed of a wire which is helically wound, and includes an end turn portion and an effective portion, and a surface of the wire in the end turn portion includes an area which is softer than a surface of the wire in the effective portion.

公开(公告)号：EP3421177A1

公开(公告)日：2019-01-02

申请号：EP17756615.5

申请日：2017-02-23

Applicant: NHK Spring Co., Ltd.

Inventor： OKADA, Hideki ,  YOKOTA, Daisuke ,  MORIYAMA, Senri ,  AKIYAMA, Satoshi ,  KOMAZAKI, Masaya ,  NAGAYASU, Go

IPC: B24C1/10 ,  B24C3/24 ,  B24C9/00

Abstract: A coil spring processing device includes an end positioning device (30), shot peening device (50), and controller (98). The end positioning device (30) positions ends (1c, 1d) of a coil spring (1). The shot peening device (50) includes a turntable mechanism (52), pressure mechanism (93), rotation mechanism (100) which rotates the coil spring (1), and projection mechanism (57) which projects shots. Holding mechanisms (81, 82) each include a lower shifting prevention jig (85) and an upper shifting prevention jig (91). The controller (98) stops a first holding mechanism (81) and a second holding mechanism (82) in rotation stop positions corresponding to end turn portions (1a, 1b) of the coil spring (1).