# US 5,347,837 A · Method of rolling using bendable sleeved roll

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,347,837 A
- Document ID: US5347837A
- Status: Granted
- Kind: A
- Application number: 07/839,128
- Filed: 1992-02-20
- Granted: 1994-09-20
- Earliest claimed: 1990-04-12
- Assignees: International Rolling Mill Consultants, Inc.; United Engineering, Inc.
- Inventors: Vladimir B. Ginzburg
- Web page: https://patentgrep.com/patent/US5347837A

## CPC

- F16C 13/024: {adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle}
- B21B 27/05: with deflectable sleeves
- B21B 37/62: by control of a hydraulic adjusting device
- D21G 1/0206: {Controlled deflection rolls}
- F16C 13/003: {Bowed or curved rolls (rollers with a bowed axis as tentering devices for tensioning, smoothing or guiding webs B65H23/0258)}
- B21B 13/14: having counter-pressure devices acting on rolls to inhibit deflection of same under load; {Back-up rolls}(counter-pressure devices as such B21B29/00)
- F16C 2322/12: Rolling apparatus, e.g. rolling stands, rolls
- Y10T 29/49865: by temperature differential [e.g., shrink fit]
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- B21B: ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B21, see B21C; bending by rolling B21D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H; pressure welding by means of a rolling mill B23K20/04)
- D21G: CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES (winders or rewinders for finished products, means for adjustment of wrinkles or lateral extensions B65H)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method of rolling an elongated workpiece in the form of a sheet or strip and of reducing edge drop during rolling comprising passing the workpiece through at least one pair of opposed work rolls which comprise an arbor and a hollow sleeve shrink-fitted over the arbor and having end portions defining, between the arbor and sleeve, a cavity providing a self-compensating flexible roll end portion which is placed over and extends beyond a longitudinal edge of the workpiece during rolling. Preferably, the shrink-fitted portion is provided with maximum radial stress at the middle thereof and decreasing toward the ends of the shrink-fitted zone. The work rolls may be backed up with self-compensating backup rolls to further improve uniformity of the rolled workpiece by reducing crown variation thereof. Positioning of the rolls is accomplished by axial shifting.

## Claims

### Claim 1

A method of rolling an elongated metal workpiece in the form of a sheet or strip, which method comprises passing the workpiece through at least one pair of opposed work rolls comprising an arbor and a hollow sleeve shrink-fitted over the arbor, maintaining maximum radial stresses in a central portion of a shrink-fitted zone, decreasing radial stresses between the arbor and the sleeve towards the ends of the shrink-fitted zone whereby axially spaced shrink-fitted end zones of the sleeve are adapted to slide over corresponding axially spaced shrink-fitted end zones of the arbor, providing a self-compensating roll end by radially spacing apart axial end portions of the arbor and axial end portions of the sleeve thereby preventing inducement of shear stresses between the axial end portions of the arbor and the sleeve and reducing edge drop of the workpiece, wherein a dimension of the radial spacing of the arbor and sleeve end portions transverse to an axial direction of the work roll increases toward axial ends of the work roll, and backing up each pair of work rolls by a pair of backup rolls each of which comprises an arbor and a similarly shrink-fitted hollow sleeve and having self-compensating end portions formed by radially spacing end portions of the backup roll arbor and sleeve, whereby crown variation of the workpiece is reduced during rolling.

### Claim 2 (depends on 1)

A method according to claim 1, further comprising positioning a self-compensating end portion of a work roll adjacent a longitudinal edge of the workpiece during rolling.

### Claim 3 (depends on 2)

A method according to claim 2, further comprising positioning a self-compensating end portion of a backup roll adjacent a self-compensating end portion of a work roll.

### Claim 4 (depends on 3)

A method according to claim 3, wherein the rolls are axially shifted to desired positions thereof.