Rolling mill and rolling mill method

Details Rolling mill and rolling mill method Rolling mill and rolling mill method

1989-01-13

1991-08-13

Crane, Daniel C.

Metal deforming

With use of control means energized in response to activator...

Sensing tool or tool-linked part

72238, 72245, 722412, B21B 3130, B21B 3132

Patent

active

050385917

ABSTRACT:
In addition to the usual type of screw-down mechanism, work roll gap is adjusted during work roll change for different diameter work rolls, without removing the back up rolls, by a variable height plate rotatably inserted between the back up roll chocks and the housing, which will minimize the volume of oil contained within the screw-down adjustment rams while maintaining good rigidity for the plate adjustment even during high impact and high vibration hot rolling. A similar effect is provided by containing unused plate height portions entirely within the footprint of the housing where they can be rigidly supported. Further rigidity is obtained with minimizing the volume of fluid within the rams, accomplished by placing the valve stand immediately adjacent to the hydraulic rams for the screw-down and preferably on top of the housing. The roll change height adjustment provided by the plates, as opposed to a bulky screw-type adjustment, provides for a reduced height housing and the additional room for the valve stand.

REFERENCES:
patent: 1712575 (1929-05-01), McArthur
patent: 2369598 (1945-02-01), Misset
patent: 3355925 (1967-12-01), Barnikel et al.
patent: 3572079 (1971-03-01), Bond
patent: 4086797 (1978-05-01), Vydrin
patent: 4167107 (1979-09-01), Simmonds
patent: 4237715 (1980-12-01), Lutz
patent: 4499748 (1985-02-01), Nihei et al.
patent: 4751837 (1988-06-01), Bonnenkamp

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