JPS57168725A - Bending angle detector of bending machine - Google Patents

Bending angle detector of bending machine

Info

Publication number
JPS57168725A
JPS57168725A JP5323781A JP5323781A JPS57168725A JP S57168725 A JPS57168725 A JP S57168725A JP 5323781 A JP5323781 A JP 5323781A JP 5323781 A JP5323781 A JP 5323781A JP S57168725 A JPS57168725 A JP S57168725A
Authority
JP
Japan
Prior art keywords
bending
contact
angle
pulley
die
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
JP5323781A
Other languages
Japanese (ja)
Other versions
JPH0124572B2 (en
Inventor
Katsuji Sekida
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 JP5323781A priority Critical patent/JPS57168725A/en
Publication of JPS57168725A publication Critical patent/JPS57168725A/en
Publication of JPH0124572B2 publication Critical patent/JPH0124572B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0281—Workpiece supporting devices

Abstract

PURPOSE:To detect an accurate bending angle regardless of the bending form, the warp, etc. of a work, by detecting the revolving angle of a contact member which can freely touch the work. CONSTITUTION:A tracking member 23 is moved down before a plate material 9 is put on a die 11 and then fixed with a hooking means in the state under which a contact member 57 is set to a lower position from the upper face of the die 11 to give no interference to the carry-in and carry-out of the material 9. The hooking means is released after the material is carried in, and a contact is secured between the member 57 and the material 9. When the material 9 starts bending with the close-up between the upper and lower aprons 1 and 13, the member 23 moved upward with the upward turning of the material 9. Then a rotary member 49 turns with contact between the member 57 and the material 9. The rotation of a pulley unified to the member 49 is transmitted to a pulley 45 via a transmission member 53. Then the revolving angle i.e., the bending angle of the material 9 is detected by a detector 44.
JP5323781A 1981-04-10 1981-04-10 Bending angle detector of bending machine Granted JPS57168725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5323781A JPS57168725A (en) 1981-04-10 1981-04-10 Bending angle detector of bending machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5323781A JPS57168725A (en) 1981-04-10 1981-04-10 Bending angle detector of bending machine

Publications (2)

Publication Number Publication Date
JPS57168725A true JPS57168725A (en) 1982-10-18
JPH0124572B2 JPH0124572B2 (en) 1989-05-12

Family

ID=12937190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5323781A Granted JPS57168725A (en) 1981-04-10 1981-04-10 Bending angle detector of bending machine

Country Status (1)

Country Link
JP (1) JPS57168725A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0230326A (en) * 1988-07-19 1990-01-31 Yamazaki Mazak Corp Press brake with work measuring means and measuring method for work thereof
US5285668A (en) * 1990-02-16 1994-02-15 Kabushiki Kaisha Komatsu Seisakusho System for detecting bending angle for press brake
US5829288A (en) * 1993-08-27 1998-11-03 L.V.D. Company N.V. Adaptive folding
US5966974A (en) * 1998-05-19 1999-10-19 Sds Usa, Inc. Automatic learning apparatus for folding machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0230326A (en) * 1988-07-19 1990-01-31 Yamazaki Mazak Corp Press brake with work measuring means and measuring method for work thereof
JPH0470091B2 (en) * 1988-07-19 1992-11-10 Yamazaki Mazak Corp
US5285668A (en) * 1990-02-16 1994-02-15 Kabushiki Kaisha Komatsu Seisakusho System for detecting bending angle for press brake
US5829288A (en) * 1993-08-27 1998-11-03 L.V.D. Company N.V. Adaptive folding
US5966974A (en) * 1998-05-19 1999-10-19 Sds Usa, Inc. Automatic learning apparatus for folding machine

Also Published As

Publication number Publication date
JPH0124572B2 (en) 1989-05-12

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