Process and device for regrinding rolls installed in hot-strip r

Abrading – Abrading process – Roll – roller – shaft – ball – or piston abrading

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451142, B24B 100

Patent

active

059577568

ABSTRACT:
A process for regrinding the rolls installed in hot-strip roll stands using rotating pot-shaped grinding tools which are movable in an oscillating manner parallel to the roll axis. The grinding tool is fastened to the end of a grinding shaft which is driven in rotation so as to be axially displaceable transversely to the roll, guided coaxially in a grinding sleeve and connected at its opposite end with a displacing drive supported directly at the housing. The contact pressing force of the grinding tools at the roll is applied by compressed air which is supplied to the displacing drives. The air pressure, which is preset corresponding to the desired contact pressing force, is changed within a narrow range until the torques of all grinding tools or of one of the grinding tools measured at the drive motors for the grinding tools which are driven in rotation are identical and constant.

REFERENCES:
patent: 3353302 (1967-11-01), Lowy
patent: 4575972 (1986-03-01), Ohki et al.
patent: 4619080 (1986-10-01), Okamoto et al.
patent: 4716687 (1988-01-01), Tsukamoto et al.
patent: 4827751 (1989-05-01), Holthoff

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