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2 638 468

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(51)

IPC

B21B19/00(2006-01-01)

(21) (22)

Application

2016134489, 2016-08-23

(24)

Start date

2016-08-23

(22)

Actual filing date

2016-08-23

(45)

Published

2017-12-13

(72)

Inventor

Pyankov Boris GrigorevichPyankov Aleksej GrigorevichToporov Vladimir AlekseevichSukhostavskij Dmitrij YurevichAkhmetzhanov Ruslan DanilovichKuznetsov Vladimir IvanovichVydrin Aleksandr VladimirovichKorol Aleksej Valentinovich

(73)

Holder

Publichnoe Aktsionernoe Obshchestvo Trubnyj Zavod"

METHOD OF SCREW BROACHING OF BLANK Russian patent published in 2017 - IPC B21B19/00

Abstract RU 2638468 C1

FIELD: machine engineering.

SUBSTANCE: at the moment of sleeve end releases from the deformation zone, the speed of rollers rotation is increased up to the rotation speed corresponding to the steady-state broaching process, and after the deformation of blank length regulated by mathematical relation, the rolls rotation speed is reduced by 20-70%.

EFFECT: increased accuracy of rear and front ends of sleeves, reduction of pipes defects on outer and inner surfaces, increased resistance of rolling tool.

4 dwg

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RU 2 638 468 C1

Authors

Pyankov Boris Grigorevich

Pyankov Aleksej Grigorevich

Toporov Vladimir Alekseevich

Sukhostavskij Dmitrij Yurevich

Akhmetzhanov Ruslan Danilovich

Kuznetsov Vladimir Ivanovich

Vydrin Aleksandr Vladimirovich

Korol Aleksej Valentinovich

Dates

2017-12-13—Published

2016-08-23—Filed