# US 2014/0150513 A1 · Method and Apparatus for Manufacturing Asymmetrical Roll-Formed Sections

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

- Number: US 2014/0150513 A1
- Document ID: US20140150513A1
- Status: Published application
- Kind: A1
- Application number: 13/705,107
- Filed: 2012-12-04
- Published: 2014-06-05
- Earliest claimed: 2012-12-04
- Inventors: Mark Yefimovich Doktorov; Nataliya Leah Doktorov-Boyko; Semion Doktorov
- Web page: https://patentgrep.com/patent/US20140150513A1

## CPC

- B21B 13/00: Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories (B21B17/00 - B21B23/00 take precedence)
- B21D 5/08: making use of forming-rollers (B21D5/12 takes precedence)
- 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)
- B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F)

## Abstract

A roll-forming station for forming asymmetrical sheet metal beams with unequal flanges, where both of the unequal flanges contact the rolls simultaneously and where the diameters of the rolls are such that the bending moments applied to the unequal flanges are identical in magnitude. This prevents lateral displacement of the workpiece during forming.

## Claims

### Claim 1

A roll stand, comprising:
a first roll for forming a first flange of a sheetmetal beam;
a second roll for forming a second flange of a sheetmetal beam, said
second flange a different length from the first flange;
such that when the sheetmetal beam enters the roll stand, the first flange contacts the first roll at the same time as the second roll contacts the second flange.

### Claim 2 (depends on 1)

The roll stand of claim 1, where the bending moment applied to the sheetmetal beam by the first roll is nearly identical in magnitude to the bending moment applied to the sheetmetal beam by the second roll.

### Claim 3 (depends on 1)

The roll stand of claim 1, where the point of contact between the first flange and the first roll and the point of contact between the second flange and the second roll are equidistant from the cross-sectional plane of the rolls.

### Claim 4 (depends on 1)

The roll stand of claim 1, where the sheetmetal beam is an asymmetrical channel section beam.

### Claim 5 (depends on 1)

The roll stand of claim 1, where the first roll is kinematically linked to the second roll.

### Claim 6 (depends on 1)

The roll stand of claim 1, where at least one of the rolls rotates freely.

### Claim 7 (depends on 1)

The roll stand of claim 1, where at least one of the rolls is spring-loaded.

### Claim 8

A method of manufacturing a sheetmetal beam comprising a first flange and a second flange, the first flange not equal in length to the second flange, comprising at least one roll-forming step where the first flange contacts a roll at the same time as the second flange contacts a roll, and where the bending moment applied to the first flange is identical in magnitude to the bending moment applied to the second flange.