JPS5636311A - Controller for hydraulic screw down device - Google Patents

Controller for hydraulic screw down device

Info

Publication number
JPS5636311A
JPS5636311A JP11340679A JP11340679A JPS5636311A JP S5636311 A JPS5636311 A JP S5636311A JP 11340679 A JP11340679 A JP 11340679A JP 11340679 A JP11340679 A JP 11340679A JP S5636311 A JPS5636311 A JP S5636311A
Authority
JP
Japan
Prior art keywords
control system
output
automatic thickness
thickness control
automatic
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
JP11340679A
Other languages
Japanese (ja)
Inventor
Eiichi Kagawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 filed Critical Mitsubishi Electric Corp
Priority to JP11340679A priority Critical patent/JPS5636311A/en
Publication of JPS5636311A publication Critical patent/JPS5636311A/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
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device

Landscapes

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

Abstract

PURPOSE: To make the automatic thickness control system possible to be reactivated without causing the thickness change, by storing the output of the automatic thickness control system when it is inactivated during the rolling work, by producing the signal output obtained by overlapping the control signal of the static control system on said stored output, and by resetting the output of the automatic thickness control system.
CONSTITUTION: When the working automatic thickness control system is inactivated during the rolling work, in the hydraulic screw down system controller possessing the static control system and the automatic thickness control system, this output ΔSH is inputted to the automatic thickness control output corrector which then stores it. Though the hydraulic screw down control is being performed according to the formula 1, if the output ΔSH is reset at "0", the formula 1 makes no change as a whole. That is, the screw position is not changed. If the automatic thickness control system is reactivated, the output ΔS2 starts the work from "0" and performs the automatic thickness control. Since the screw position is not changed as stated above, the thickness accuracy is improved.
COPYRIGHT: (C)1981,JPO&Japio
JP11340679A 1979-09-03 1979-09-03 Controller for hydraulic screw down device Pending JPS5636311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11340679A JPS5636311A (en) 1979-09-03 1979-09-03 Controller for hydraulic screw down device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11340679A JPS5636311A (en) 1979-09-03 1979-09-03 Controller for hydraulic screw down device

Publications (1)

Publication Number Publication Date
JPS5636311A true JPS5636311A (en) 1981-04-09

Family

ID=14611473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11340679A Pending JPS5636311A (en) 1979-09-03 1979-09-03 Controller for hydraulic screw down device

Country Status (1)

Country Link
JP (1) JPS5636311A (en)

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