JPS5471754A - Controlling method for lock-on - Google Patents
Controlling method for lock-onInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5195965A (en) * | 1975-02-20 | 1976-08-23 |
-
1977
- 1977-11-21 JP JP13970477A patent/JPS5471754A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5195965A (en) * | 1975-02-20 | 1976-08-23 |
Cited By (1)
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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