Rolling mill for rolling or sizing metal pipes

Details Rolling mill for rolling or sizing metal pipes Rolling mill for rolling or sizing metal pipes

2005-09-20

2005-09-20

Larson, Lowell A. (Department: 3725)

Metal deforming

By use of roller or roller-like tool-element

Included in roller-cluster

C072S239000

Reexamination Certificate

active

06945084

ABSTRACT:
A rolling mill for rolling or sizing of metallic pipes, bars and wires has a plurality of rolling units which are arranged on a straight line close to one another and can be exchanged in total, partly or individually, each of the rolling units having at least three rolls which are arranged in a star-like configuration around a rolling mill axis, drive shafts and motors each driving a respective one of the rolls in all the rolling units, a rolling unit housing provided for the rolling units, roll bearings provided for the rolls, and multi-part roll shafts provided for supporting the rolls so that the rolls can be exchanged without dismounting of the rolling unit housing and the roll bearings, the rolling units holding the rolls inside and outside of the rolling mill in their operational positions.

REFERENCES:
patent: 3494166 (1970-02-01), Severin et al.
patent: 3861187 (1975-01-01), Leeuwestein
patent: 6041635 (2000-03-01), Cattaneo et al.
patent: 6209376 (2001-04-01), Zhang
patent: 31 43 244 (1983-05-01), None
patent: WO 98/06515 (1998-02-01), None

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