Title:
等速自在継手の外方部材
Document Type and Number:
Japanese Patent JP5231266
Kind Code:
B2
Abstract:
Provided is an outer member of a constant velocity universal joint, which suppresses occurrence of cracking in a joining portion of the constant velocity universal joint and has stable quality. The outer member of the constant velocity universal joint includes: a cup section (1) having a plurality of track grooves formed therein; and a shaft section (2) having one end coupled to a bottom portion of the cup section (1) . By joining members having different carbon contents to each other and then performing induction hardening on the members, a hardening heat-affected portion affected by the induction hardening, a hardening heat-unaffected portion unaffected by the induction hardening, a joining heat-affected portion affected by heat generated at a time of the joining, and a joining heat-unaffected portion unaffected by the heat generated at the time of the joining are formed. Amartensitic structure is eliminated from a portion that is the hardening heat-unaffected portion of one of the members having a high carbon content and is the joining heat-affected portion at an end portion (25) including a joining end surface (23) that is to be joined to another one of the members having a low carbon content.
Inventors:
Morimoto Yousei
Kazuhiko Yoshida
Kazuhiko Yoshida
Application Number:
JP2009009004A
Publication Date:
July 10, 2013
Filing Date:
January 19, 2009
Export Citation:
Assignee:
ntn corporation
International Classes:
F16D3/20; C21D1/10; C21D7/06; C21D9/40; C22C38/00; C22C38/04; F16D3/205; F16D3/2237; F16D3/2245
Domestic Patent References:
| JP2007270869A | ||||
| JP200813811A | ||||
| JP20062185A | ||||
| JP200664060A | ||||
| JP61132284A |
Attorney, Agent or Firm:
Hideka Tanaka
Kunihiko Shiromura
Tsuyoshi Kumano
Reiko Maeda
Kunihiko Shiromura
Tsuyoshi Kumano
Reiko Maeda