Apparatus for controlling camber and method for same

Patent metadata

Field	Value
Publication number	US-10071407-B2
Application number	US-201314780510-A
Country	US
Kind code	B2
Filing date	Dec 27, 2013
Priority date	Mar 28, 2013
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

Provided is a camber control apparatus and method capable of reducing camber of a slab sizing press (SSP). The camber control apparatus and method may calculates a camber amount through an imaging process and differently set zeroing of anvils at a work side and a drive side, thereby reducing camber. Thus, the camber control apparatus and method can reduce quality defects such as telescope, twist, wave, and roll mark, increase the lifetime of equipment by reducing a variation in load applied to the equipment, and minimize a cost caused by an equipment accident.

First claim

What is claimed is:

1. A camber control apparatus comprising:
a vision imaging unit, the vision imaging unit taking an image of a shape of a slab which is rolled in a widthwise direction;
a vision image processing unit processing the image and measuring feature information of the slab from the image;
a control unit determining a camber amount and a direction in which a camber occurred using the measured feature information, and selecting an anvil of which the position is to be adjusted, using the camber amount and the direction in which the camber occurred, and calculating an adjusting value for adjusting the position of the anvil; and
a driving motor rotating a worm gear by a designated amount in a designated direction in response to the adjusting value, the worm gear adjusting the position of the selected anvil,
wherein the feature information includes one or more of a length, a width, edges, vertexes, and at least one of a longitudinal center and a widthwise center of the slab and a distance between the edges or the vertexes.

2. The camber control apparatus of claim 1 , further comprising a displacement sensor measuring at least one of the position of an anvil and a distance to the anvil from the sensor, and outputting at least one of the measured position and distance to the control unit, when the position of the anvil is adjusted or zeroing is performed.

3. The camber control apparatus of claim 1 , wherein the vision imaging unit comprises one of one camera which takes an image of the entire length of the slab, a plurality of cameras of which each takes a partial image of the slab at a predetermined interval in response to the length of the slab, and one camera which takes a partial image of the slab at each predetermined time interval in response to the advancing speed of the slab, and
when a plurality of images are taken of the slab, the vision image processing unit connects the plurality of images to construct one image including the entire length of the slab.

4. A camber control method comprising:
taking an image of the shape of a slab which is rolled in a widthwise direction;
measuring feature information of the slab from the image;
determining a camber amount and a direction in which a camber occurred, using the feature information;
selecting an anvil of which the position is to be adjusted, using the camber amount and the direction in which the camber occurred, and calculating an adjusting value for adjusting the position of the anvil; and
rotating a worm gear by a designated amount in a designated direction in response to the adjusting value, the worm gear adjusting the position of the selected anvil,
wherein the feature information includes one or more of a length, a width, an edges, a vertexes, and a longitudinal center or widthwise center of the slab and a distance between at least one of the edges and the vertexes.

5. The camber control method of claim 4 , further comprising advancing and retreating the anvil by controlling the rotation direction of the worm gear, and adjusting an advance distance and a retreat distance of the anvil by controlling the rotation amount or rotation angle of the worm gear.

6. The camber control method of claim 4 , further comprising automatically controlling the rotation direction and the rotation amount or the rotation angle of the worm gear using a driving motor.

Assignees

• Hyundai Steel Co

Inventors

• Hwang Jin-Dong
• Kim Hyeong-Jin
• Park Yong-Kook
• Shin Woo-Young

Classifications

• B21B37/68 Primary

  Camber or steering control for strip, sheets or plates, e.g. preventing meandering · CPC title

• B21C51/00

  Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F · CPC title

• B21B38/04

  for measuring thickness, width, diameter or other transverse dimensions of the product · CPC title

• B21B38/00

  Methods or devices for measuring, {detecting or monitoring} specially adapted for metal-rolling mills, e.g. position detection, inspection of the product {(control devices or methods B21B37/00)} · CPC title

• B21B37/28

  Control of flatness or profile during rolling of strip, sheets or plates · CPC title