WO1992004178A1 - Procede d'entrainement d'un coulisseau dans une presse hydraulique - Google Patents

Procede d'entrainement d'un coulisseau dans une presse hydraulique Download PDF

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Publication number
WO1992004178A1
WO1992004178A1 PCT/JP1991/001154 JP9101154W WO9204178A1 WO 1992004178 A1 WO1992004178 A1 WO 1992004178A1 JP 9101154 W JP9101154 W JP 9101154W WO 9204178 A1 WO9204178 A1 WO 9204178A1
Authority
WO
WIPO (PCT)
Prior art keywords
master
slide
hydraulic
cylinder
slave
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.)
Ceased
Application number
PCT/JP1991/001154
Other languages
English (en)
Japanese (ja)
Inventor
Kazuhiro Mimura
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of WO1992004178A1 publication Critical patent/WO1992004178A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/24—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam

Definitions

  • the present invention relates to a hydraulic cylinder which is moved by a plurality of hydraulic cylinders so that the sliding force approaches the bed or moves away from the bed. Hydraulic press slides that can improve the parallelism of the slides to the bead, in particular, This is related to the method of driving the wheels.
  • the method of driving the slide by the conventional master slave control is based on one specific hydraulic cylinder in multiple hydraulic cylinders. Is a master, and the other hydraulic cylinder is a slave, and the other hydraulic cylinder follows one specific hydraulic cylinder.
  • this conventional master-slave control it is possible to regulate the master movement ⁇ slave movement, but the slave Since one movement cannot be regulated, if an unbalanced load exceeding the force u pressure capacity is generated on the other hydraulic cylinder as a slave, it will be used as the master.
  • the parallelism force of the slide may be lost because a specific hydraulic cylinder operates according to the command value
  • An object of the present invention is to provide a hydraulic drive slide driving method capable of driving the slide so as to always be in parallel with the hydraulic press.
  • the present invention provides a method for driving a hydraulic press in which the hydraulic cylinder is designed so that the hydraulic cylinder can be kept at a constant level.
  • the parallelism of the slide with respect to the bed can be maintained by the master-slave control, and the bias load exceeds the pressurizing capacity. Even in this case, the slide can be driven by the master slave control while maintaining the degree of skew with respect to the bead.
  • FIG. 1 is a schematic explanatory view showing a specific example of the present invention
  • FIG. 2 is a structural explanatory view of a controller used in the present invention.
  • the controller 7 includes a microcomputer 10, a pulse generator 11, a counter 12, and a DA converter 1.
  • 4 Servo control system 16 consisting of 3 and j compensation circuit 14 and servo amplifier 15, counts the generated pulses of linear scale 4 It consists of four power counters 17 and a main counter 18 that counts the pulses of the pulse generator 11.
  • the pulse of the pulse generator 11 output from the micro computer 10 becomes the slide down command ⁇ , and each hydraulic cylinder 1 extends and lowers slide 1, whereby the displacement of slide 1 changes the panorama of linear scale 4 with counter 12.
  • the hydraulic cylinder 2 is fed back to the servo control system 1 (5), and each hydraulic cylinder 2 is controlled so that the deviation from the command value is constant.
  • the other three hydraulic cylinders 1-2 compare a deviation from a specific one hydraulic cylinder 2 ′ and are controlled so that the deviation becomes zero. It is.
  • the speed of each hydraulic cylinder 2 is detected by counting the panorama of the linear scale 4 with the counter 17, and the speed of the cylinder is detected. No, no.
  • the magnitude of the bias load and the pressurizing capacity is determined by comparing the pulse that is the command value counted by the main counter 18 with the Zores.
  • the slide 1 is lowered in parallel with the bed 3 by the above-described control. If the load exceeds 1 capacity, the above-mentioned speed change is greater in the Shan U U cylinder, that is, the ft condition is more severe in the hydraulic system.
  • the master is used as a master, and the other three hydraulic cylinders are used as slaves. Is lowered.
  • the master should be driven by the pressure change, not the speed change of the hydraulic cylinder 2.
  • E The cylinder may be determined.
  • the detected value of the pressure sensor 8 is converted from A to D, and a human input is performed on the microcomputer in the evening. I should do it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

L'invention se rapporte à un procédé d'entraînement d'un coulisseau dans une presse hydraulique, qui permet de maintenir en permanence un parallélisme stabilisé entre le coulisseau et un banc de la presse. Selon ce procédé, lorsque des charges inégales agissant sur des cylindres correspondants (2) sont inférieures aux capacités de pressage, un cylindre hydraulique déterminé devient le maître-cylindre et les autres cylindres hydrauliques deviennent asservis, de façon à assurer une commande maître-esclave, et, lorsque les charges inégales dépassent les capacités de pressage, le cylindre hydraulique soumis à la plus forte charge devient le maître-cylindre et les autres cylindres hydrauliques deviennent asservis, assurant ainsi une commande maître-esclave.
PCT/JP1991/001154 1990-08-29 1991-08-29 Procede d'entrainement d'un coulisseau dans une presse hydraulique Ceased WO1992004178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2/225105 1990-08-29
JP22510590A JPH04111998A (ja) 1990-08-29 1990-08-29 油圧プレスのスライド駆動方法

Publications (1)

Publication Number Publication Date
WO1992004178A1 true WO1992004178A1 (fr) 1992-03-19

Family

ID=16824063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/001154 Ceased WO1992004178A1 (fr) 1990-08-29 1991-08-29 Procede d'entrainement d'un coulisseau dans une presse hydraulique

Country Status (2)

Country Link
JP (1) JPH04111998A (fr)
WO (1) WO1992004178A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6153812A (en) * 1994-10-26 2000-11-28 Monsanto Company Rapid and efficient regeneration of transgenic wheat plants

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013220446A (ja) * 2012-04-17 2013-10-28 Mitsubishi Materials Techno Corp 粉末成形品の製造方法および粉末成形装置
TR202008213A2 (tr) * 2020-05-28 2020-06-22 Oezkoc Hidrolik Makina Sanayi Ve Ticaret Anonim Sirketi Hi̇droli̇k preslerde paralel kontrol si̇stemi̇ ve bu si̇stemi̇n çalişma yöntemi̇

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261699A (ja) * 1984-06-06 1985-12-24 Kobe Steel Ltd プレスにおける可動フレ−ムの傾き制御方法
JPS6349410A (ja) * 1986-08-20 1988-03-02 Japan Steel Works Ltd:The プラスチツク圧縮成形機
JPS63157799A (ja) * 1986-08-13 1988-06-30 Kobe Steel Ltd プレス制御装置
JPH0335899A (ja) * 1989-06-30 1991-02-15 Komatsu Ltd 油圧プレスシリンダの同期制御装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261699A (ja) * 1984-06-06 1985-12-24 Kobe Steel Ltd プレスにおける可動フレ−ムの傾き制御方法
JPS63157799A (ja) * 1986-08-13 1988-06-30 Kobe Steel Ltd プレス制御装置
JPS6349410A (ja) * 1986-08-20 1988-03-02 Japan Steel Works Ltd:The プラスチツク圧縮成形機
JPH0335899A (ja) * 1989-06-30 1991-02-15 Komatsu Ltd 油圧プレスシリンダの同期制御装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6153812A (en) * 1994-10-26 2000-11-28 Monsanto Company Rapid and efficient regeneration of transgenic wheat plants

Also Published As

Publication number Publication date
JPH04111998A (ja) 1992-04-13

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