JPS5471754A - Controlling method for lock-on - Google Patents

Controlling method for lock-on

Info

Publication number
JPS5471754A
JPS5471754A JP13970477A JP13970477A JPS5471754A JP S5471754 A JPS5471754 A JP S5471754A JP 13970477 A JP13970477 A JP 13970477A JP 13970477 A JP13970477 A JP 13970477A JP S5471754 A JPS5471754 A JP S5471754A
Authority
JP
Japan
Prior art keywords
lock
rolled material
screw
point
turning
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
JP13970477A
Other languages
Japanese (ja)
Inventor
Kazufumi Baba
Masatoshi Inoue
Zenji Tominaga
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.)
JFE Steel Corp
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Kawasaki Steel Corp
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 Mitsubishi Electric Corp, Kawasaki Steel Corp filed Critical Mitsubishi Electric Corp
Priority to JP13970477A priority Critical patent/JPS5471754A/en
Publication of JPS5471754A publication Critical patent/JPS5471754A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/60—Roll-force control; Roll-gap control by control of a motor which drives an adjusting screw

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE: To make as little as possible the quantity of unnecessary part of the rolled material, and to carry out the good control of the sheet thickness, by operating the lock-on at the position in the rolled material of a specified distance from the feeding point of the rolled material.
CONSTITUTION: The necessary time for turning the work roll 2, from the moment of feeding of rolled material until the turning angle of the work roll 2 becomes an angle θ degrees, repesented by the furmula I, is detected by the work-roll-turning- angle-detector 4; hereby, the lock-on memory 6 is actuated so as to control the thickness taking the sheet thickness at that time as the aim value. In the formula I, D is the diameter of the work roll, (f) is the advancing rate of each pass, and L is the specified length from the feeding point of the rolled material to the point of start of the lock-on. The screw position detector 10 derives the variation Δs of the position of the screw 8 from the point of lock-on; the comparator 11 compares the deviation ΔF/M given by the comparator 7 with this variation Δs; thus obtained deviation Δσ is inputted to the screw driver 9. In which, F is the rolling load and M is the mill constant. The driver 9 drives the screw 8 so as to make zero the deviation Δσ.
COPYRIGHT: (C)1979,JPO&Japio
JP13970477A 1977-11-21 1977-11-21 Controlling method for lock-on Pending JPS5471754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13970477A JPS5471754A (en) 1977-11-21 1977-11-21 Controlling method for lock-on

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13970477A JPS5471754A (en) 1977-11-21 1977-11-21 Controlling method for lock-on

Publications (1)

Publication Number Publication Date
JPS5471754A true JPS5471754A (en) 1979-06-08

Family

ID=15251465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13970477A Pending JPS5471754A (en) 1977-11-21 1977-11-21 Controlling method for lock-on

Country Status (1)

Country Link
JP (1) JPS5471754A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016083672A (en) * 2014-10-24 2016-05-19 Ｊｆｅスチール株式会社 Plate thickness control method in thick plate rolling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5195965A (en) * 1975-02-20 1976-08-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5195965A (en) * 1975-02-20 1976-08-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016083672A (en) * 2014-10-24 2016-05-19 Ｊｆｅスチール株式会社 Plate thickness control method in thick plate rolling

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