Invention Grant
- Patent Title: Tripod-type constant-velocity universal joint and method of manufacturing the same
- Patent Title (中): 三脚架型等速万向节及其制造方法
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Application No.: US13055219Application Date: 2009-07-29
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Publication No.: US08342969B2Publication Date: 2013-01-01
- Inventor: Junichi Izumino , Kenji Konaka
- Applicant: Junichi Izumino , Kenji Konaka
- Applicant Address: JP Osaka
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderotth, Lind & Ponack, L.L.P.
- Priority: JP2008-220045 20080828
- International Application: PCT/JP2009/063514 WO 20090729
- International Announcement: WO2010/024083 WO 20100304
- Main IPC: F16D3/205
- IPC: F16D3/205 ; B23P11/00

Abstract:
A tripod-type constant-velocity universal joint has a journal raw profile with reduced weight and a reduced number of manufacturing steps. A leading end corner portion of the journal raw profile is held with use of a die and forged. By the forging, at the part including an elliptically longitudinal side relatively on a leading end portion side of an outer peripheral surface of each of journals, edge portions reducing a lateral sectional area of each of the journals toward a leading end side thereof are formed, and tapered surfaces are formed on the leading end side of the edge portions. Centering on each of the journals is performed by causing two points on an elliptically longitudinal side of the edge portions to abut against a centering jig.
Public/Granted literature
- US20110130211A1 TRIPOD-TYPE CONSTANT-VELOCITY UNIVERSAL JOINT AND METHOD OF MANUFACTURING THE SAME Public/Granted day:2011-06-02
Information query
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