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2 021 073

(13)

C1

(51)

IPC

(21) (22)

Application

5050766/27, 1992-07-01

(22)

Actual filing date

1992-07-01

(45)

Published

1994-10-15

(72)

Inventor

Babushkin V.G.Ekimov V.A.

(73)

Holder

Babushkin Valerij Gennad'Evich

METHOD FOR PRODUCTION OF HOLLOW STEP DETAIL WITH FLANGE IN MIDDLE PART AND INSIDE CIRCULAR PROJECTION IN FLANGE ZONE Russian patent published in 1994 - IPC

Abstract RU 2021073 C1

FIELD: shaping the metals. SUBSTANCE: cylindrical blank is deformed in succession plastically, forming the outside surface and flange, then treated by cutting. At first opening is broached in blank which is equal to detail cavity in flange zone, then outside and inside surfaces of detail from lower frontal part to the flange are formed simultaneously by direct pressing out with profile arbor, then they are reduced with arbor on the side of upper frontal part to the flange and set in flange zone forming simultaneously remaining surfaces of detail, flange and inside circular projection. EFFECT: improved efficiency. 5 dwg

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RU 2 021 073 C1

Authors

Babushkin V.G.

Ekimov V.A.

Dates

1994-10-15—Published

1992-07-01—Filed

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