公开(公告)号：US09751140B2

公开(公告)日：2017-09-05

申请号：US14912782

申请日：2014-09-01

Applicant: JTEKT CORPORATION

Inventor： Ryousuke Imai ,  Eiji Kaneuchi ,  Yoshimasa Yamada ,  Koichi Nabeshima

IPC: B23D79/12 ,  B23D1/26 ,  B23D1/08 ,  B23D13/00 ,  B23F21/06 ,  B23D1/18 ,  B23F1/04

CPC classification number: B23D79/12 ,  B23D1/08 ,  B23D1/18 ,  B23D1/26 ,  B23D13/005 ,  B23F1/04 ,  B23F21/06

Abstract: A cylindrical cutting tool for processing splines formed on an outer circumference of a shaft member to extend in an axial direction includes blade portions which are formed in a spline shape on an inner circumference. The blade portions include: a first blade portion which is formed in a terminal end portion in a first direction along the axial direction and which is directed substantially toward the first direction; and a second blade portion which is formed in a terminal end portion in a second direction along the axial direction and opposite to the first direction and which is directed substantially toward the second direction.

公开(公告)号：US09005038B2

公开(公告)日：2015-04-14

申请号：US14025136

申请日：2013-09-12

Applicant: JTEKT Corporation

Inventor： Koichi Nabeshima ,  Eiji Kaneuchi ,  Yoshimasa Yamada ,  Ryousuke Imai

IPC: F16C3/035 ,  F16D1/108 ,  F16D3/06 ,  B62D1/185 ,  F16D1/10

CPC classification number: F16D1/108 ,  B62D1/185 ,  F16C3/035 ,  F16C2326/24 ,  F16D3/06 ,  F16D2001/103 ,  Y10T403/7035

Abstract: A rotation transmitting apparatus includes a first shaft on which multiple external teeth are formed so as to be arranged in a circumferential direction, and a second shaft in which multiple internal teeth are formed so as to be arranged in the circumferential direction, the second shaft being fitted to the first shaft so as to be slidable relative to the first shaft in the axial direction and so as to be engageable with the first shaft in a rotational direction through the use of the external teeth and the internal teeth. A protrusion is formed on the tooth flank of one of the external tooth and the internal tooth, the protrusion being projected toward the corresponding tooth flank of the other of the external tooth and the internal tooth. The protrusion is made of a resin that is more elastically deformable than the tooth flank.

Abstract translation: 一种旋转传递装置，包括沿圆周方向形成有多个外齿的第一轴和沿圆周方向形成有多个内齿的第二轴，第二轴是 安装在所述第一轴上，以能够相对于所述第一轴在轴向方向上滑动，并且通过使用所述外齿和所述内齿在旋转方向上与所述第一轴接合。 在外齿和内齿之一的齿面上形成突起，突出部朝向外齿和内齿中的另一个的相应齿面突出。 突起由比齿面更可弹性变形的树脂制成。

公开(公告)号：US10782207B2

公开(公告)日：2020-09-22

申请号：US15943783

申请日：2018-04-03

Applicant: JTEKT CORPORATION

Inventor： Yoshimasa Yamada ,  Ryousuke Imai

IPC: G01M13/02 ,  B23Q1/40 ,  F16H25/22 ,  G01M13/04 ,  G01M17/06 ,  G01M13/021 ,  B62D5/04 ,  B62D3/08

Abstract: A ball screw mechanism includes a ball nut member that threadedly engages with a rack shaft via a plurality of balls, and a rolling bearing including an outer ring retained by a housing, an inner ring retained by the ball nut member, and a plurality of rolling elements. The ball screw mechanism moves the rack shaft in an axial direction relative to the housing through rotation of the ball nut member. A method for inspecting the ball screw mechanism includes fixing the outer ring to a fixing jig, pressing the rack shaft in the axial direction while restricting its rotation to rotate the ball nut member together with the inner ring relative to the outer ring, measuring an amount of a run-out of the rack shaft along with the rotation of the ball nut member, and determining whether the amount of the run-out satisfies a predetermined condition.