发明授权
- 专利标题： Shaft member for fluid lubrication bearing apparatuses and a method for producing the same
- 专利标题（中）： 流体润滑轴承装置的轴构件及其制造方法
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申请号： US12827014申请日： 2010-06-30
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公开(公告)号： US08678653B2公开(公告)日： 2014-03-25
- 发明人: Nobuyoshi Yamashita , Natsuhiko Mori , Toshiyuki Mizytani , Takeshi Shimazaki , Koji Yamagata
- 申请人： Nobuyoshi Yamashita , Natsuhiko Mori , Toshiyuki Mizytani , Takeshi Shimazaki , Koji Yamagata
- 申请人地址： JP Osaka JP Fukui
- 专利权人： NTN Corporation,Fukui Byora Co., Ltd.
- 当前专利权人： NTN Corporation,Fukui Byora Co., Ltd.
- 当前专利权人地址： JP Osaka JP Fukui
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2004-261436 20040908; JP2004-261457 20040908
- 主分类号： F16C32/06
- IPC分类号： F16C32/06 ; F16C17/10
摘要：
A low-cost shaft member for hydrodynamic bearing apparatuses restores the pressure balance in a thrust bearing gap formed on both axial sides of the flange portion in an early stage. A shaft material integrally having a shaft portion and a flange portion with a through-hole between both end faces of the flange portion is formed in a common forging step. As a result, the through-hole is formed to open to an inner diameter side of the bearing gaps avoiding the thrust bearing gaps formed on both end faces of the flange portion of the shaft member as a finished product.