Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1986-11-25
1988-01-05
Larson, Lowell A.
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72399, 72412, B21K 2116
Patent
active
047167564
ABSTRACT:
A press-formed clutch drum of an automatic transmission of which inner and outer cylindrical surfaces are respectively formed with a first series of splines and a second series of inverted splines. The first and second series of splines are alternatively arranged in a ring so that each adjacent two splines are spaced by an interposal of a connecting portion defined therebetween. Each of the first and second series of splines comprises a pair of raised portions projected radially from the major cylindrical body of the drum, and a depressed portion interposed between the paired raised portions to form a groove in the major cylindrical body. The raised portions of the first and second series of splines are respectively projected inwardly and outwardly with respect to the center axis of the cylindrical body. The connecting portion extends between one of the paired raised portions of the first series of splines and adjacent one of the paired raised portions of the second series of splines and has a radial cross section which is inclined with respect to an imaginary plane which contains both the center axis of the major cylindrical body and the middle portion of the connecting portion in cross-section.
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patent: 4470290 (1984-09-01), Jungesjo
European Search Report.
Fujioka Kazuyoshi
Tani Toshiro
Larson Lowell A.
Nissan Motor Co,. Ltd.
Yamakawa Industrial Co., Ltd.
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