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2 457 932

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IPC

B24B39/02(2006-01-01)

B23D43/02(2006-01-01)

B23D37/04(2006-01-01)

B23P25/00(2006-01-01)

(21) (22)

Application

2011108170/02, 2011-03-02

(24)

Start date

2011-03-02

(22)

Actual filing date

2011-03-02

(45)

Published

2012-08-10

(72)

Inventor

Skvortsov Vladimir FedorovichArljapov Aleksej Jur'EvichIvanov Maksim AleksandrovichMajstrenko Ivan Viktorovich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Issledovatel'Skij Tomskij Politekhnicheskij Universitet"

METHOD OF MANDRELLING WITH EXPANSION Russian patent published in 2012 - IPC B24B39/02 B23D43/02 B23D37/04 B23P25/00

Abstract RU 2457932 C1

FIELD: process engineering.

SUBSTANCE: invention relates to machining, particularly, to small-diameter bore mandrelling. Sample billet is mandrelled to define mandrelling interference that causes through plastic deformation of billet. At this interference, billet bore is mandrelled by pushing single-tooth mandrel with increasing diameter there through. Note here that last mandrel is used to create extra axial constant stretching stress in billet, smaller than billet material initial yield point.

EFFECT: decreased residual strain.

2 dwg

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RU 2 457 932 C1

Authors

Skvortsov Vladimir Fedorovich

Arljapov Aleksej Jur'Evich

Ivanov Maksim Aleksandrovich

Majstrenko Ivan Viktorovich

Dates

2012-08-10—Published

2011-03-02—Filed