BUILT-IN BROACH FOR BROACHING OPENINGS Russian patent published in 1997 - IPC

Abstract RU 2078650 C1

FIELD: metal working. SUBSTANCE: built-in broach comprises housing 1 provided with ring grooves 3 wherein cutting rings 4 are received. The rings are made of a flexible material and mounted for permitting radial movement. Slots 5 of cutting rings 4 are uniformly arranged over periphery. Cutting rings 4 are preferably double-sided. The angle of cutting is equal to 90 deg. EFFECT: improved design. 4 dwg

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RU 2 078 650 C1

Authors

Zadumin S.S.

Kalininskij A.G.

Dates

1997-05-10—Published

1992-10-08—Filed