Other

Evgeny Nikolaevich Moshnin

Viktor Alexeevich Odnodushny

Nikolai Ivanovich Romashko

Alexei Fedorovich Nistratov

Nikolai N Zorev

Konstantin P Alexeev

Lev V Tupitsyn

Boris A Trifonov

Vyacheslav A Morozov

Gennady V Rudyak

Sergei K Bakhvalov, Deceased

Larisa M Bakhvalova, Administrator

Leonid V Prozorov

Boris P Kukushkin

Stanislav Ivanovich Yanov

Oleg V Scherba

Nikolai I Zhiltsov

Raisa Ivanovna Goncharova

Lev A Rabinovich

Zoya Mikhailovna Frolkina

Nikolai Pavlovich Schlyakhin

Jury V Brjukhanov

The method consists in flanging the wall of a thick-walled shell around a hole made in said wall in adavance until a branch pipe is produced, in calibrating said shell on the inside surface adjoining the branch pipe, and simultaneous straightening of the thick-walled shell on its outside surface in the direction of the longitudinal axis of the branch pipe from the side opposite to the location of said branch pipe. The device for the realization of the method according to the invention comprises a flanging die with guide columns secured on it, said columns carrying a cantilevered arbor capable of moving longitudinally and provided with a mechanism for fixing it in the initial position, and pushers fastened on the movable cross-head of a press, and arranged normally to the longitudinal axis of the arbor with which they interact and symmetrically to the longitudinal axis of the flanging punch and there is an additional die located between said pushers, the lower surface of said additional die having a shape corresponding to the shape of the outer surface of the shell while the lower surface of the punch holder has a shape corresponding to the shape of the inside surface of the shell. Besides, the flanging die is provided with projections entering the slots on the faces of the thick-walled shell.

Pressing branch pipe on thick-walled shell-device for realization thereof

A press with crossheads interconnected by vertical pillars, at least one of said crossheads moving relative to the stationary crosshead which carries a sliding table with the lower die, the upper die being secured to the movable crosshead above. The stationary crosshead accommodates a rod and the drive of a pulling device connected with an auxiliary crosshead below, said auxiliary crosshead having vertical spindles with stops which interact with the adjacent movable crosshead at the beginning of radial compression of the tubular billet.

Press for pressing pipe fittings

The pipe bending machine of the present invention is adapted for mandrelless pipe bending with the simultaneous compressing of the pipe being bent to avoid thinning of the walls thereof. The invention can be used to best advantage when applied to bending large-diameter (1000 mm and over) steel pipes. The machine features the bending mechanism and the longitudinal travelling mechanism so interconnected by means of the members and disks that a braking moment is applied to the bending mechanism and, consequently, pipe upsetting occurs.

Pipe bending machine

Growing community of inventors

Moscow, Russia

Evgeny Nikolaevich Moshnin