Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1987-11-23
1989-08-15
Eley, Timothy V.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
291161, 291162, B21B 3124
Patent
active
048561550
ABSTRACT:
Method in an adjustable-crown roll, in which a series of hydraulic loading elements is used. A central axle of the roll is supported by axle journals, by means of deflection bearings. A cross-section of the central axle is shaped such that the axle has sufficiently high rigidity in a nip plane. In the method, the central axle is rotated about its deflection bearings over an angle, which may be within the range of about 30.degree. to 180.degree.. A free space that is created or enlarged between the central axle and a roll mantle thereby, and provided between the central axle and an inner surface of the roll mantle, is utilized as an opening gap for the nip formed by the variable-crown roll, by allowing the roll mantle to be shifted, e.g. by the effect of gravity, or by affirmatively shifting the mantle relative to the rotated central axle.
REFERENCES:
patent: 3838480 (1974-10-01), Depuy
patent: 3885283 (1975-05-01), Biondetti
patent: 4092916 (1978-06-01), Link et al.
patent: 4241482 (1980-12-01), Biondetti
patent: 4319522 (1982-03-01), Marchioro et al.
patent: 4327468 (1982-05-01), Kusters et al.
patent: 4477954 (1984-10-01), Molinatto
Niskanen Juhani
Pullinen Martti
Chin Frances
Eley Timothy V.
Valmet Oy
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