JPS57100820A - Bending angle controlling device in press brake - Google Patents

Bending angle controlling device in press brake

Info

Publication number
JPS57100820A
JPS57100820A JP17700180A JP17700180A JPS57100820A JP S57100820 A JPS57100820 A JP S57100820A JP 17700180 A JP17700180 A JP 17700180A JP 17700180 A JP17700180 A JP 17700180A JP S57100820 A JPS57100820 A JP S57100820A
Authority
JP
Japan
Prior art keywords
die
punch
work
bending
press brake
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
JP17700180A
Other languages
Japanese (ja)
Other versions
JPH0120928B2 (en
Inventor
Katsumi Koyama
Shigenori Kojima
Tsuneo Kogure
Naoaki Itano
Yoshihiko Ohashi
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.)
Amada Co Ltd
Original Assignee
Amada Co 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 Amada Co Ltd filed Critical Amada Co Ltd
Priority to JP17700180A priority Critical patent/JPS57100820A/en
Priority to US06/328,601 priority patent/US4486841A/en
Priority to SE8107349A priority patent/SE463701B/en
Priority to CA000391772A priority patent/CA1181673A/en
Priority to IT49870/81A priority patent/IT1172141B/en
Priority to CH7868/81A priority patent/CH656813A5/en
Priority to FR8123043A priority patent/FR2495505B1/en
Priority to GB8137103A priority patent/GB2091604B/en
Priority to DE3148744A priority patent/DE3148744C2/en
Publication of JPS57100820A publication Critical patent/JPS57100820A/en
Priority to SE8800009A priority patent/SE465710B/en
Publication of JPH0120928B2 publication Critical patent/JPH0120928B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To enable highly efficient bending work without making trial bending by providing a bending angle controlling device that automatically controls the distance of approach of a punch and a die in a press brake.
CONSTITUTION: To control the condition of connection of a punch 5a and a die 7a of the body 1 of a press brake by the bending angle of a work A, the thickness T of a work, bending length B, tensile strength S, angle A, width V of groove of the die 7a etc. are inputted to the control board 87. When working, pressure BF is calculated by detecting displacement of the body 1 with a detecting plate 121, and a correction value relating to mechanical characteristics of the body 1 and elastic characteristics of the work are calculated from the pressure and above-mentioned V, T, S, A. The distance of approach D of the punch 5a to the groove of the die 7a is determined by calculation from the above and above- mentioned V, T, A and a theoretical value D1 calculated from shoulder R Rd of the die 7a and tip R Rp of the punch 5a. A connection adjusting mechanism of the punch and die is controlled basing upon this.
COPYRIGHT: (C)1982,JPO&Japio
JP17700180A 1980-12-09 1980-12-15 Bending angle controlling device in press brake Granted JPS57100820A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP17700180A JPS57100820A (en) 1980-12-15 1980-12-15 Bending angle controlling device in press brake
US06/328,601 US4486841A (en) 1980-12-09 1981-12-08 Bending press
SE8107349A SE463701B (en) 1980-12-09 1981-12-08 PROVIDED TO PERFORM A V-SHAPED BENDING IN A PRESS AND DEVICE FOR ADJUSTING A SUPPORT ELEMENT IN A PRESS
CA000391772A CA1181673A (en) 1980-12-09 1981-12-08 Bending press
CH7868/81A CH656813A5 (en) 1980-12-09 1981-12-09 METHOD AND DEVICE FOR FORMING RECESSES IN A WORKPIECE.
IT49870/81A IT1172141B (en) 1980-12-09 1981-12-09 IMPROVEMENT IN BENDING PRESSES
FR8123043A FR2495505B1 (en) 1980-12-09 1981-12-09 BENDING METHOD AND APPARATUS FOR ADJUSTING THE STROKE OF A BENDING PRESS
GB8137103A GB2091604B (en) 1980-12-09 1981-12-09 Bending press
DE3148744A DE3148744C2 (en) 1980-12-09 1981-12-09 Method and device for making bends on a workpiece
SE8800009A SE465710B (en) 1980-12-09 1988-01-04 BENDING PRESS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17700180A JPS57100820A (en) 1980-12-15 1980-12-15 Bending angle controlling device in press brake

Publications (2)

Publication Number Publication Date
JPS57100820A true JPS57100820A (en) 1982-06-23
JPH0120928B2 JPH0120928B2 (en) 1989-04-19

Family

ID=16023433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17700180A Granted JPS57100820A (en) 1980-12-09 1980-12-15 Bending angle controlling device in press brake

Country Status (1)

Country Link
JP (1) JPS57100820A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212121A (en) * 1983-05-17 1984-12-01 Amada Co Ltd Folding method in press brake
JPS6024223A (en) * 1983-07-19 1985-02-06 Amada Co Ltd Method for controlling bending angle with press brake
JPS63157722A (en) * 1986-12-19 1988-06-30 Toyo Koki:Kk Bending device
JPS63290623A (en) * 1987-05-23 1988-11-28 Toyo Koki:Kk Press brake
JPS63295017A (en) * 1987-05-26 1988-12-01 Toyo Koki:Kk Press brake
WO1991003333A1 (en) * 1989-08-31 1991-03-21 Kabushiki Kaisha Komatsu Seisakusho Control device for brake of press
US5857366A (en) * 1994-07-08 1999-01-12 Amada Company, Ltd. Method of bending workpiece to target bending angle accurately and press brake for use in the same method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212121A (en) * 1983-05-17 1984-12-01 Amada Co Ltd Folding method in press brake
JPH0418927B2 (en) * 1983-05-17 1992-03-30 Amada Co Ltd
JPS6024223A (en) * 1983-07-19 1985-02-06 Amada Co Ltd Method for controlling bending angle with press brake
JPS63157722A (en) * 1986-12-19 1988-06-30 Toyo Koki:Kk Bending device
JPH0353047B2 (en) * 1986-12-19 1991-08-13 Toyokoki Co
JPS63290623A (en) * 1987-05-23 1988-11-28 Toyo Koki:Kk Press brake
JPH0354012B2 (en) * 1987-05-23 1991-08-16
JPS63295017A (en) * 1987-05-26 1988-12-01 Toyo Koki:Kk Press brake
JPH0354013B2 (en) * 1987-05-26 1991-08-16
WO1991003333A1 (en) * 1989-08-31 1991-03-21 Kabushiki Kaisha Komatsu Seisakusho Control device for brake of press
US5857366A (en) * 1994-07-08 1999-01-12 Amada Company, Ltd. Method of bending workpiece to target bending angle accurately and press brake for use in the same method

Also Published As

Publication number Publication date
JPH0120928B2 (en) 1989-04-19

Similar Documents

Publication Publication Date Title
ATE37303T1 (en) DEVICE FOR CHANGING THE TOOL LENGTH ON A PLATE BENDING MACHINE.
JPS57100819A (en) Bending angle controlling device in press brake
JPS57100820A (en) Bending angle controlling device in press brake
JPS57100821A (en) Circular arc bending device for press brake
JPS5497663A (en) Extrusion die
JPS53145252A (en) Controller of oil pressure elevator
JPS5380628A (en) Inching valve of hydraulic pressure control device for clutch
JPS5722825A (en) Forming method of pressure vessel head
JPS6440265A (en) Working pressure control device for polishing machine
EP0282454A3 (en) Device for adjusting the distance between or tool and a workpiece
IT8223980A0 (en) ARTICULATED CONTROL FOR BELLS OF PRESSES IN WHICH DURING THE WORKING STROKE THEY COME AGAINST FIXED MASSES, WHICH LATER MUST BE ACCELERATED
JPS57202929A (en) Bender
JPS5297088A (en) Controller
JPS5680329A (en) Hydraulic forging device
JPS5775223A (en) Apparatus and controlling method for bending
ES8304828A1 (en) A device for eliminating deformations and/or denting of the teeth of a gear wheel
JPS5795210A (en) Apparatus for automatically controlling posture of tractor for agriculture
JPS52118193A (en) Pressure controller for fluid
JPS57171504A (en) Multiple stages rolling mill having shape controlling function
JPS55122608A (en) Rolling mill
Gebhardt et al. Manufacture of Precision Tubes with Especially Close Tolerances
JPS53118260A (en) Plate-thickness controlling method for rolling mill
JPS5757953A (en) Return tube for ball screw and manufacture thereof
JPS57181728A (en) Spinning machine
Naessens Computer control of press brake operations