Invention Grant
US09121453B2 Double-offset constant velocity universal joint 有权
双偏移等速万向节

  • Patent Title: Double-offset constant velocity universal joint
  • Patent Title (中): 双偏移等速万向节
  • Application No.: US12595844
    Application Date: 2008-04-07
  • Publication No.: US09121453B2
    Publication Date: 2015-09-01
  • Inventor: Tohru Yamase
  • Applicant: Tohru Yamase
  • Applicant Address: JP Osaka
  • Assignee: NTN CORPORATION
  • Current Assignee: NTN CORPORATION
  • Current Assignee Address: JP Osaka
  • Agency: Wenderoth, Lind & Ponack, L.L.P.
  • Priority: JP2007-122661 20070507
  • International Application: PCT/JP2008/056856 WO 20080407
  • International Announcement: WO2008/139792 WO 20081120
  • Main IPC: F16D3/227
  • IPC: F16D3/227 F16D3/223
Double-offset constant velocity universal joint
Abstract:
The outer peripheral surface (32) and the inner spherical peripheral surface (34) of a cage (30) of a double-offset constant velocity universal joint are cut after being quenched. More specifically, to finish the outer peripheral surface (32) of the cage (30) made up of a spherical portion (32a) and tapered portions (32b, 32c), the spherical portion (32a) and the tapered portions (32b, 32c) are cut after being quenched. Then, the spherical portion (32a) is cut at a cutting speed lower than that for the tapered portions (32b, 32c), thereby providing a better roughness to the cut surface of the spherical portion (32a) than to the cut surface of the tapered portions (32b, 32c).
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