HYDRAULIC PRESS FOR SHAPING SHARPLY BENT BRANCH PIPES Russian patent published in 2001 - IPC

Abstract RU 2172221 C2

FIELD: plastic metal working, possibly manufacture of sharply bent branch pipes of tube blanks. SUBSTANCE: die set unit with parting die and shaping hydraulic cylinders are mounted in frame of press. One hydraulic cylinder is provided with punch for pulling through tube blank; outer hydraulic cylinder has ball type end pushing punch. One hydraulic cylinder is mounted on bracket jointly connected with frame with possibility of rotation relative to frame and bracket in horisontal plane. Elastic filler is placed in cavity of tube blank. Shaping hydraulic cylinders are provided with additional hydraulic cylinders mounted in shaping ones coaxially to them and telescopically joined with them. It provides possibility for making thin-wall pipeline members with bent axis. EFFECT: improved quality of branch pipes due to elimination of their corrugation and material rupture. 3 dwg, 1 ex

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RU 2 172 221 C2

Authors

Egorov V.G.

Zakharchenko N.D.

Nejman K.V.

Golub V.V.

Dates

2001-08-20Published

1998-10-06Filed