Invention Grant
- Patent Title: Method and system for producing ring-shaped member for vehicle, and synchronizer ring
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Application No.: US15748901Application Date: 2016-12-16
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Publication No.: US10369612B2Publication Date: 2019-08-06
- Inventor: Kazuto Kobayashi , Hiroshi Koyama , Yuu Yasuda
- Applicant: NSK LTD.
- Applicant Address: JP Tokyo
- Assignee: NSK LTD.
- Current Assignee: NSK LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2015-245271 20151216
- International Application: PCT/JP2016/087543 WO 20161216
- International Announcement: WO2017/104800 WO 20170622
- Main IPC: B21D28/00
- IPC: B21D28/00 ; B21D28/36 ; B21D28/28 ; B21K1/30 ; F16D23/06 ; B21D51/16 ; F16D23/02 ; B21D28/02 ; B21D53/16 ; B21D53/84

Abstract:
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.
Public/Granted literature
- US20180214925A1 METHOD AND SYSTEM FOR PRODUCING RING-SHAPED MEMBER FOR VEHICLE, AND SYNCHRONIZER RING Public/Granted day:2018-08-02
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