TRIPLE ACTION HOT-FORMING PRESS Russian patent published in 2011 - IPC B21J9/02 B30B1/16 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to presses for finless forming of forgings with through holes, blunt cavities and crosswise tags. Proposed press comprises foundation with table, slide with drive, main and auxiliary mandrels with drives, top and bottom extractors with drives. Main mandrel is arranged on the slide while auxiliary is arranged under the table. Drive of each mandrel is made up of hydraulic cylinder with two-piston rod. Drive of each extractor is made up of hydraulic cylinder with annular ring. Slide drive is made up of two rockers articulated to swing in synchronism and provided with loads, and two con rods.

EFFECT: reduced material/output ratio and maintenance and repair costs, expanded operating performances.

3 cl, 5 dwg