JPS558354A - Screw down control unit of rolling mill - Google Patents

Screw down control unit of rolling mill

Info

Publication number
JPS558354A
JPS558354A JP8097878A JP8097878A JPS558354A JP S558354 A JPS558354 A JP S558354A JP 8097878 A JP8097878 A JP 8097878A JP 8097878 A JP8097878 A JP 8097878A JP S558354 A JPS558354 A JP S558354A
Authority
JP
Japan
Prior art keywords
cylinder
signal
hydraulic jack
controlling
housing
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.)
Granted
Application number
JP8097878A
Other languages
Japanese (ja)
Other versions
JPS6120371B2 (en
Inventor
Toshiyuki Kajiwara
Masayoshi Tagawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8097878A priority Critical patent/JPS558354A/en
Publication of JPS558354A publication Critical patent/JPS558354A/en
Publication of JPS6120371B2 publication Critical patent/JPS6120371B2/ja
Granted 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 possible highly accurate thickness controlling by installing an auxiliary cylinder for driving a hydraulic jack for adjusting roll gap on the outside of the housing and controlling the piston position by the detection signal of the piston position thereof and the signal from a rolling load meter. CONSTITUTION:A hydraulic jack 9 (10 is its ram) and a hydraulic load meter 12 are disposed within a housing 1 above the back roll choke 7 of the back roller 5 of an upper roller 3. An auxiliary cylinder 30 for driving a jack 9 and the position detector 32 of its piston 31 are disposed on the outside of the housing 1. In the abovementioned apparatus, the detection signal 33 of the cylinder 31 position by the detector 32 is compared with the set value of the cylinder 31 in an operational ampifier 13 and the position of the cylinder 31 is controlled by way of an electromagnetic servo valve 14 from the value of said difference, whereby the position controlling of the hydraulic jack ram 10 is accomplised. At the same time, the signal from the hydraulic load meter 12 is converted with a coefficient device 20, after which this signal is inputted to the operational amplifier 13 to similary control the hydraulic jack 9, whereby thickness controlling is accomplished.
JP8097878A 1978-07-05 1978-07-05 Screw down control unit of rolling mill Granted JPS558354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8097878A JPS558354A (en) 1978-07-05 1978-07-05 Screw down control unit of rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8097878A JPS558354A (en) 1978-07-05 1978-07-05 Screw down control unit of rolling mill

Publications (2)

Publication Number Publication Date
JPS558354A true JPS558354A (en) 1980-01-21
JPS6120371B2 JPS6120371B2 (en) 1986-05-22

Family

ID=13733587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8097878A Granted JPS558354A (en) 1978-07-05 1978-07-05 Screw down control unit of rolling mill

Country Status (1)

Country Link
JP (1) JPS558354A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100510007B1 (en) * 2002-10-04 2005-08-26 주식회사 포스코 Apparatus for adjusting gap between rolling mill and reduction roll choke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100510007B1 (en) * 2002-10-04 2005-08-26 주식회사 포스코 Apparatus for adjusting gap between rolling mill and reduction roll choke

Also Published As

Publication number Publication date
JPS6120371B2 (en) 1986-05-22

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