Patent US3604086A successfully refreshed from Google Patents.
US3604086A
Expired / Lapsed
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Method and apparatus for compensating for the deflection of steel plate rolling mill rolls
Assignee: Siegener Maschinenbau GmbH
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Filing: 1968-09-19
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Granted: 1971-09-14
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Expires: 1988-09-19
Abstract
Abstract Disclosed is a crown-controlled roll for use in a rolling mill. The roll is constructed with a sleeve mounted on a mandrel having an axially located bore for transmitting a controlled pressurized fluid medium through radially extending bores into a gap between the mandrel and the sleeve. At each end of the mandrel distinct from the gap, peripheral seals are actuated by fluid transmitted radially from the axial bore. The roll sleeve is constructed with a thickness of approximately 0.15 of the outside diameter of the backup roll. Cams are used to rigidly interconnect the mandrel with the sleeve.
Inventors
- 👤 Erich Bretschneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:07
CPC Classifications
B; B21; B21B; B21B27/00; B21B27/02; B21B27/03; B21B27/05; B30; B30B; B30B15/00; B30B15/34; B30B3/00; B30B3/005; F; F16; F16C; F16C13/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/49547
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
A method of compensating for the elastic deflection of a roll employed in a rolling mill for the rolling of steel and made up of an outer steel sleeve mounted on a mandrel and having a continuous peripheral gap therebetween, comprising the steps of: expanding said sleeve into a barrel shape by the application of fluid pressure into said gap; regulating the magnitude of said fluid pressure applied to said gap to produce a desired expansion of said sleeve by deformation into said barrel shape; forming a central fluid conducting opening in said mandrel extending from one end thereof to a predetermined internal point; forming a plurality of radially extending ports in said mandrel at the approximate midpoint of the mandrel for interconnecting said opening and said gap to pressurize the gap with fluid delivered to said mandrel; and forming a fluidtight seal at each end of said roll remote from said gap between said sleeve and said mandrel.
Claim 2
Independent Claim
159 words
A method of compensating for the elastic deflection of a roll employed in a rolling mill for the rolling of steel and made up of an outer steel sleeve mounted on a mandrel and having a continuous peripheral gap therebetween, comprising the steps of: expanding said sleeve into a barrel shape by the application of fluid pressure into said gap; regulating the magnitude of said fluid pressure applied to said gap to produce a desired expansion of said sleeve by deformation into said barrel shape; forming a central fluid conducting opening in said mandrel extending from one end thereof to a predetermined internal point; forming a plurality of radially extending ports in said mandrel at the approximate midpoint of the mandrel for interconnecting said opening and said gap to pressurize the gap with fluid delivered to said mandrel; and forming a fluidtight seal at each end of said roll remote from said gap between said sleeve and said mandrel.
Claim 3
Dependent Claim
186 words
A deflection compensating roll for a rolling mill employed for rolling steel comprising: an elongated outer steel roll sleeve for bearing at least a part of the rolling load generated in said rolling mill; a mandrel having a body portion intermediate journaled ends for mounting said roll sleeve; said mandrel having a continuous peripheral recess formed over the greater part of the length of said body portion; an annular groove formed in each end of said body portion of said mandrel; each of said grooves being distinct and spaced outward from said peripheral recess; a ring gasket received in each of said grooves; said recess in said mandrel, said ring gaskets, and said roll sleeve when mounted thereon defining an elongated peripheral gap; said mandrel having an internally terminating bore arranged coaxially with the rotation axis of said roll; a plurality of radially extending channels formed in said mandrel for interconnecting said central bore and said gap in a fluid pressure transmitting relationship; means for feeding fluid to said bore; and means for regulating the pressure effect of said fluid with reference to varying roll deflections.
Claim 4
Dependent Claim
186 words
A deflection compensating roll for a rolling mill employed for rolling steel comprising: an elongated outer steel roll sleeve for bearing at least a part of the rolling load generated in said rolling mill; a mandrel having a body portion intermediate journaled ends for mounting said roll sleeve; said mandrel having a continuous peripheral recess formed over the greater part of the length of said body portion; an annular groove formed in each end of said body portion of said mandrel; each of said grooves being distinct and spaced outward from said peripheral recess; a ring gasket received in each of said grooves; said recess in said mandrel, said ring gaskets, and said roll sleeve when mounted thereon defining an elongated peripheral gap; said mandrel having an internally terminating bore arranged coaxially with the rotation axis of said roll; a plurality of radially extending channels formed in said mandrel for interconnecting said central bore and said gap in a fluid pressure transmitting relationship; means for feeding fluid to said bore; and means for regulating the pressure effect of said fluid with reference to varying roll deflections.
Claim 5
Dependent Claim
32 words
A deflection compensating roll according to claim 2 further comprising: fluid-transmitting channels interconnecting said internal bore and said annular grooves for urging said gasket into a sealing relation with said roll sleeve.
Claim 6
Dependent Claim
36 words
A deflection compensating roll according to claim 2 wherein said elongated roll sleeve is of steel with a wall thickness of about 0.15 X d, where d corresponds to the outside diameter of said roll sleeve.
Claim 7
Dependent Claim
31 words
A deflection compensating roll according to claim 2 further comprising cams received in said mandrel; and recesses formed in said roll sleeve for meshing in a driving relation with said cams.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |