Variable crown roll

Details Variable crown roll Variable crown roll

1977-01-03

1977-12-13

Guest, Alfred R.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

21123, B21B 3108

Patent

active

040620964

ABSTRACT:
The roll comprises an arbor having a sleeve fitted over its central portion, together with means for introducing hydraulic fluid under pressure between arbor and sleeve to expand the latter and vary its crown. In one embodiment the arbor is provided with a fixed shoulder at one end having an undercut bevel in its inner face and a movable collar on the other end, likewise provided with a shoulder having an undercut bevel on its inner face, and the sleeve has bevelled ends. The hydraulic means are adapted to urge the collar toward the first shoulder, wedging the ends of the sleeve against the arbor. In another embodiment, the arbor is tapered slightly at one end and the inner surface of the sleeve end is also tapered so that movement of the collar wedges the sleeve over the taper of the arbor. A filler is also provided to fill most of the space between arbor and sleeve and so reduce the amount of hydraulic fluid required to fill the roll. A third embodiment has a liner in the space between sleeve and arbor, attached to the sleeve at each end, and means for introducing the hydraulic fluid between sleeve and liner, so as to strengthen the grip of the sleeve on the mandrel as the roll crown is increased.

REFERENCES:
patent: 1630470 (1927-05-01), Clifford
patent: 2970339 (1961-02-01), Hausman
patent: 3457617 (1969-07-01), Noe et al.
patent: 3604086 (1971-09-01), Bretschneider

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