JPS55120923A - Control of cropping length - Google Patents

Control of cropping length

Info

Publication number
JPS55120923A
JPS55120923A JP2791379A JP2791379A JPS55120923A JP S55120923 A JPS55120923 A JP S55120923A JP 2791379 A JP2791379 A JP 2791379A JP 2791379 A JP2791379 A JP 2791379A JP S55120923 A JPS55120923 A JP S55120923A
Authority
JP
Japan
Prior art keywords
cropping
length
shear
rolling
rolled material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2791379A
Other languages
Japanese (ja)
Inventor
Takashi Oota
Hitoshi Tanaka
Naotaka Kiyota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP2791379A priority Critical patent/JPS55120923A/en
Publication of JPS55120923A publication Critical patent/JPS55120923A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
    • B23D36/0008—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices
    • B23D36/0083—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for cutting off of the ends of the products, e.g. cropping shears

Abstract

PURPOSE:To reduce crop loss and improve yield of rolling by a method wherein the minimum required cropping length corresponding to a crop shape is set for every rolled material without disturbing a rolling line, and cropping automatically conducted with the thus-set dimension. CONSTITUTION:In the case of automatic operation, use is made of a shape recognition device 8 which recorgnized a residual image on a monitor television 7, processes the graphic information by a computer to determine a cropping length l, and generates a cropping length signal. On the other hand, as a rolled material 3 is fed from a rough rolling mill to a finish rolling mill, a position detector 4' near the inlet of a cropping shear 2 detects the position of the rolled material tip end 10 and generates a detection signal. Fed with the detection signal, a controller 9 calculates the time when the cropping line comes to a point directly below the shear 2 based on the relation between the length l and the position of the detector 4', and instructs the calculated time to operate the flying corpping shear. Thus, crop loss is reduced and the yield of rolling is inproved.
JP2791379A 1979-03-09 1979-03-09 Control of cropping length Pending JPS55120923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2791379A JPS55120923A (en) 1979-03-09 1979-03-09 Control of cropping length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2791379A JPS55120923A (en) 1979-03-09 1979-03-09 Control of cropping length

Publications (1)

Publication Number Publication Date
JPS55120923A true JPS55120923A (en) 1980-09-17

Family

ID=12234115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2791379A Pending JPS55120923A (en) 1979-03-09 1979-03-09 Control of cropping length

Country Status (1)

Country Link
JP (1) JPS55120923A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068431A2 (en) * 1981-06-29 1983-01-05 Licentia Patent-Verwaltungs-GmbH Device for visualizing the ends of rolled material
JPS5845812A (en) * 1981-09-04 1983-03-17 Nippon Steel Corp Crop cutting control device in shearing machine
JPH0663815A (en) * 1992-08-21 1994-03-08 Nkk Corp Crop shear controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068431A2 (en) * 1981-06-29 1983-01-05 Licentia Patent-Verwaltungs-GmbH Device for visualizing the ends of rolled material
EP0068431A3 (en) * 1981-06-29 1985-10-09 Licentia Patent-Verwaltungs-GmbH Device for visualizing the ends of rolled material
JPS5845812A (en) * 1981-09-04 1983-03-17 Nippon Steel Corp Crop cutting control device in shearing machine
JPH0663815A (en) * 1992-08-21 1994-03-08 Nkk Corp Crop shear controller

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