Metal working – Method of mechanical manufacture – Process for making bearing or component thereof
Reexamination Certificate
2006-02-21
2006-02-21
Omgba, Essama (Department: 3726)
Metal working
Method of mechanical manufacture
Process for making bearing or component thereof
C029S898042, C029S898066, C072S348000, C072S349000, C072S370100
Reexamination Certificate
active
07000319
ABSTRACT:
To make a peripheral lip region to be formed with chamfered portions by the use of a plastic working technique, to enable the use of a cup forming punch of a simplified shape so that a mold used therewith can be easily assembled and the punch when worn down can easily be repaired, a method of making an outer race of a constant velocity universal joint of a tripod type includes an upsetting step during which not only are outer peripheral shapes of a small diameter portion (W3a) and a large diameter portion (W3b) defined, but a recess (Wb) having a tapered peripheral wall face (Wba), which eventually defines general shapes of the chamfered portions (10) of the outer race (1), is formed in an end face of the large diameter portion (W3b). During a cup forming step, the tapered peripheral wall face (Wba) defined during the upsetting step is rearwardly pushed while its shape is maintained. Thereafter, a cup drawing step is carried out to finish the tapered peripheral wall face (Wba) to represent the final design shapes of the chamfered portions (10).
REFERENCES:
patent: 4369558 (1983-01-01), Iwata et al.
patent: 5001920 (1991-03-01), Ishinaga et al.
patent: 5007266 (1991-04-01), Nishiuchi et al.
patent: 5186082 (1993-02-01), Kuramitsu et al.
patent: 5697245 (1997-12-01), Maeng
patent: 5765430 (1998-06-01), Iihara et al.
patent: 6055838 (2000-05-01), Ohama et al.
patent: 6105413 (2000-08-01), Duggan et al.
patent: 6146281 (2000-11-01), Iijima et al.
patent: 6224490 (2001-05-01), Iihara et al.
patent: 6422946 (2002-07-01), Iihara et al.
patent: 6438844 (2002-08-01), Nolden
patent: 6516647 (2003-02-01), Hirschvogel et al.
patent: 6557257 (2003-05-01), Johnson et al.
patent: 1291539 (2003-03-01), None
patent: 403060839 (1991-03-01), None
patent: 403060840 (1991-03-01), None
patent: 411247877 (1999-09-01), None
patent: 2000-61576 (2000-02-01), None
patent: 02003004061 (2003-01-01), None
patent: WO 03/002284 (2003-01-01), None
Hiroshi, Aoyama, et al. “Manufacture of Outer Ring Part in Constant Velocity Universal Joint”, Patent Abstracts of Japan, Feb. 29, 2000, pp. 1-2.
Iihara Michio
Sagisaka Yoshihiro
Shinkai Takeshi
NTN Corporation
Omgba Essama
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