Apparatus for supporting the piercing mandrel back-up bar of a p

Details Apparatus for supporting the piercing mandrel back-up bar of a p Apparatus for supporting the piercing mandrel back-up bar of a p

1983-05-24

1985-03-12

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

With tool inside hollow work

72 97, B21B 1708

Patent

active

045036985

ABSTRACT:
Apparatus is provided for supporting the mandrel back-up bar of a press-piercing rolling mill. The apparatus comprises a plurality of constraining elements supported by a base in two lines disposed parallel to and symmetrically with respect to the rolling and piercing axis of the rolling mill. All the constraining elements of each line are mounted on a single beam which is supported on horizontal guides perpendicular to the rolling axis and adjustable in position on the guides. This arrangement facilitates the simultaneous adjustment of all the constraining elements making up a line.

REFERENCES:
patent: 3625044 (1971-12-01), Iann et al.
patent: 4373370 (1983-02-01), Allen et al.

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