Title:
電動パワーステアリング装置用の直動軸、電動パワーステアリング装置、およびこれらの製造方法
Document Type and Number:
Japanese Patent JP7124891
Kind Code:
B2
Abstract:
With respect to a linear motion shaft in which a rack shaft part and a ball screw shaft part are joined to each other by friction welding, coaxiality of a portion having a rack shaft part and a portion having a ball screw shaft part is improved. In a state where a gripped portion 56 formed on the screw shaft part 29 is gripped by a first gripping tool 57 for centering, and a rack shaft part 28 is gripped by a second gripping tool 58 for centering, end portions in the axial direction of the rack shaft part 28 and the screw shaft part 29 are abutted to each other while the screw shaft part 29 and the rack shaft part 28 are relatively rotated by rotating the first gripping tool 57, so that the rack shaft part 28 and the screw shaft part 29 are joined to each other by friction welding.
Inventors:
Yasuda Kaname
Kentaro Unno
Takanori Mayuzumi
Hisashi Terakado
Kentaro Unno
Takanori Mayuzumi
Hisashi Terakado
Application Number:
JP2020563045A
Publication Date:
August 24, 2022
Filing Date:
December 11, 2019
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
B62D3/12; B21H3/04; B21J5/12; B21K1/76; B23K20/12; B62D5/04; F16C3/02; F16H19/04; F16H25/22; F16H25/24
Domestic Patent References:
| JP2005247163A | ||||
| JP2016179475A | ||||
| JP2017087819A | ||||
| JP2017089688A | ||||
| JP2014234882A | ||||
| JP2013508158A | ||||
| JP2017056479A | ||||
| JP2017082811A | ||||
| JP11082666A | ||||
| JP2007504408A | ||||
| JP2012040606A |
Foreign References:
| KR1020110101437A |
Attorney, Agent or Firm:
Kiwa Patent Office