Device for inserting and thrusting a bar into a press piercing _

Details Device for inserting and thrusting a bar into a press piercing _ Device for inserting and thrusting a bar into a press piercing _

1979-04-11

1981-10-27

Mehr, Milton S.

Metal deforming

By use of roller or roller-like tool-element

With tool inside hollow work

72250, 72 97, B21B 1700, B21B 1904

Patent

active

042966221

ABSTRACT:
The present invention is directed to a device for inserting and thrusting a bar into a double rolling pressure piercing mill (PPM) machine comprises a drum-shaped bedplate coaxially keyed to a motor-driven shaft having its axis of rotation parallel to the PPM's rolling axis, a first and a second thrust means on the drum-shaped bedplate having acting lines (R R.sub.1) parallel to the PPM's rolling axis and circumferentially spaced from each other by a predetermined center angle, a motor for angularly moving the drum-shaped bedplate from a position in which the line R coincides with the rolling axis to a second position in which the line R.sub.1 coincides with said rolling axis and vice-versa.

REFERENCES:
patent: 2024514 (1935-12-01), Drescher
patent: 2958244 (1960-11-01), Rodder

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