JPS56146613A - Shear controller - Google Patents

Shear controller

Info

Publication number
JPS56146613A
JPS56146613A JP4555380A JP4555380A JPS56146613A JP S56146613 A JPS56146613 A JP S56146613A JP 4555380 A JP4555380 A JP 4555380A JP 4555380 A JP4555380 A JP 4555380A JP S56146613 A JPS56146613 A JP S56146613A
Authority
JP
Japan
Prior art keywords
shear
controller
workpiece
detected
speed
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
JP4555380A
Other languages
Japanese (ja)
Inventor
Takamasa Kawasaki
Michio Inagaki
Koki Yoshitani
Shoichi Hashimoto
Keiji Saitou
Yoshihiro Uekane
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
Mitsubishi Heavy Industries Ltd
JFE Engineering Corp
Original Assignee
Hitachi Ltd
Mitsubishi Heavy Industries Ltd
NKK Corp
Nippon Kokan 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, Mitsubishi Heavy Industries Ltd, NKK Corp, Nippon Kokan Ltd filed Critical Hitachi Ltd
Priority to JP4555380A priority Critical patent/JPS56146613A/en
Publication of JPS56146613A publication Critical patent/JPS56146613A/en
Pending legal-status Critical Current

Links

Landscapes

  • Shearing Machines (AREA)

Abstract

PURPOSE: To produce shear drum driving torque for providing stable shearing force by presuming and calculating the shearing torque produced in the shearing.
CONSTITUTION: Shear blade speed detected by a tachometer 7 connected to a shear motor 6 and shear angle detected by an angle detector 8 are applied to a shear blade position calculation controller 15. On the other hand, a tachometer 9 and pulse generator 10 connected to a roll 3 measures workpiece speed and workpiece length. These outputs are applied to a calculation controller 13 for calculating shear start timing and shear acceleration. When arrival of a workpiece 5 is here detected by a material detector 4, the calculation controller 13 calculates necessary shear acceleration and timing to give them to a speed controller 12 for the shear motor 6 and start drive of a drum 1 through a current controller 11 for the shear motor 6 for providing stable shearing force.
COPYRIGHT: (C)1981,JPO&Japio
JP4555380A 1980-04-09 1980-04-09 Shear controller Pending JPS56146613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4555380A JPS56146613A (en) 1980-04-09 1980-04-09 Shear controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4555380A JPS56146613A (en) 1980-04-09 1980-04-09 Shear controller

Publications (1)

Publication Number Publication Date
JPS56146613A true JPS56146613A (en) 1981-11-14

Family

ID=12722545

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4555380A Pending JPS56146613A (en) 1980-04-09 1980-04-09 Shear controller

Country Status (1)

Country Link
JP (1) JPS56146613A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6179515A (en) * 1984-09-25 1986-04-23 Mitsubishi Heavy Ind Ltd Fixed size cutting device of plate material
JPS61182717A (en) * 1985-02-06 1986-08-15 Toshiba Corp Controller for flying cutter
US5464673A (en) * 1991-08-08 1995-11-07 Hitachi Chemical Co., Ltd. Information recording medium having recording layer with organic polymer and dye contained therein

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6179515A (en) * 1984-09-25 1986-04-23 Mitsubishi Heavy Ind Ltd Fixed size cutting device of plate material
JPH0547323B2 (en) * 1984-09-25 1993-07-16 Mitsubishi Heavy Ind Ltd
JPS61182717A (en) * 1985-02-06 1986-08-15 Toshiba Corp Controller for flying cutter
US5464673A (en) * 1991-08-08 1995-11-07 Hitachi Chemical Co., Ltd. Information recording medium having recording layer with organic polymer and dye contained therein

Similar Documents

Publication Publication Date Title
JPS57129198A (en) Controlling method and device for ac motor
JPS56146613A (en) Shear controller
IE890129L (en) Sheet strength measuring system
JPS5220212A (en) Phase control system for d-c motor
JPS52101569A (en) Device for controlling manipulator
JPS5541154A (en) Motor controller
JPS57183283A (en) Controlling method for position of motor and position controller
JPS5215012A (en) Motor car brake control system
JPS5451110A (en) Railway vehicle controller
JPS5359815A (en) Motor stop controlling system
JPS55106721A (en) Flying shear
EP0356245A3 (en) Material cutting apparatus
JPS5312012A (en) Controlling motor speed
JPS55137858A (en) Automatic measuring compensator for machine tool
JPS52156282A (en) Servo motor drive unit
JPS6253286B2 (en)
JPS57206292A (en) Controlling device for variable speed motor
JPS5427118A (en) Electric car controlling system
JPS5337809A (en) Ac motor speed controller
JPS547112A (en) Speed controller for motor
JPS52145885A (en) Clock shear control apparatus
JPS54162082A (en) Cruise control device
JPS56146648A (en) Method of detecting speed of main shaft drive system of numerical-controlled machine tool
JPS57171244A (en) Estimation of tool life
JPS5344823A (en) Synchronous motor control system