JPS642723A - Detecting device for bent angle of work - Google Patents

Detecting device for bent angle of work

Info

Publication number
JPS642723A
JPS642723A JP15642587A JP15642587A JPS642723A JP S642723 A JPS642723 A JP S642723A JP 15642587 A JP15642587 A JP 15642587A JP 15642587 A JP15642587 A JP 15642587A JP S642723 A JPS642723 A JP S642723A
Authority
JP
Japan
Prior art keywords
work
sensors
bent angle
bent
detecting device
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
JP15642587A
Other languages
Japanese (ja)
Other versions
JPH012723A (en
JP2521761B2 (en
Inventor
Yoshio Nakamura
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 JP62156425A priority Critical patent/JP2521761B2/en
Publication of JPS642723A publication Critical patent/JPS642723A/en
Publication of JPH012723A publication Critical patent/JPH012723A/en
Application granted granted Critical
Publication of JP2521761B2 publication Critical patent/JP2521761B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To accurately detect a bent angle and to obtain the bent angle with high reliability by providing a plurality of electrostatic capacity type sensors in parallel in the direction departing the bent position of a work and extending each sensors in the width direction of the work.
CONSTITUTION: The work W is mounted on a die 9 and the work W is bent by the drop of a punch to take a state of the work WA. The distance between the sensors 43A and 43B is given by (l). Distances from intersections at which perpendiculars set at the centers of the sensors 43A, 43B cross the work WA to the upper surfaces of the centers of the sensors 43A, 43B are given respectively by A and B. A formula, tanθ=(A-B)/l is established for the bent angle θof the work. Accordingly, θ is obtained from θ=Arc.tan(A-B)/l. Since (l) is a preset value, the bent angle θ of the work is obtained by measuring the distances A, B.
COPYRIGHT: (C)1989,JPO&Japio
JP62156425A 1987-06-25 1987-06-25 Folding machine Expired - Fee Related JP2521761B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62156425A JP2521761B2 (en) 1987-06-25 1987-06-25 Folding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62156425A JP2521761B2 (en) 1987-06-25 1987-06-25 Folding machine

Publications (3)

Publication Number Publication Date
JPS642723A true JPS642723A (en) 1989-01-06
JPH012723A JPH012723A (en) 1989-01-06
JP2521761B2 JP2521761B2 (en) 1996-08-07

Family

ID=15627466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62156425A Expired - Fee Related JP2521761B2 (en) 1987-06-25 1987-06-25 Folding machine

Country Status (1)

Country Link
JP (1) JP2521761B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285668A (en) * 1990-02-16 1994-02-15 Kabushiki Kaisha Komatsu Seisakusho System for detecting bending angle for press brake
US5367902A (en) * 1990-10-05 1994-11-29 Komatsu Ltd. Metal sheet bending machine
US5531087A (en) * 1990-10-05 1996-07-02 Kabushiki Kaisha Komatsu Seisakusho Metal sheet bending machine
US5652805A (en) * 1993-05-24 1997-07-29 Kabushiki Kaisha Komatsu Seisakusho Bending angle detector and straight line extracting device for use therewith and bending angle detecting position setting device
WO2006070822A1 (en) * 2004-12-27 2006-07-06 Amada Company, Limited Work bending angle detecting device and work bending machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60247415A (en) * 1984-05-24 1985-12-07 Mitsubishi Electric Corp Device for controlling bending angle of press brake

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60247415A (en) * 1984-05-24 1985-12-07 Mitsubishi Electric Corp Device for controlling bending angle of press brake

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285668A (en) * 1990-02-16 1994-02-15 Kabushiki Kaisha Komatsu Seisakusho System for detecting bending angle for press brake
US5367902A (en) * 1990-10-05 1994-11-29 Komatsu Ltd. Metal sheet bending machine
US5531087A (en) * 1990-10-05 1996-07-02 Kabushiki Kaisha Komatsu Seisakusho Metal sheet bending machine
US5652805A (en) * 1993-05-24 1997-07-29 Kabushiki Kaisha Komatsu Seisakusho Bending angle detector and straight line extracting device for use therewith and bending angle detecting position setting device
US5661671A (en) * 1993-05-24 1997-08-26 Kabushiki Kaisha Komatsu Seisakusho Bending angle detecting position setting device
US5899964A (en) * 1993-05-24 1999-05-04 Kabushiki Kaisha Komatsu Seisakusho Bending angle detector and straight line extracting device for use therewith and bending angle detecting position setting device
WO2006070822A1 (en) * 2004-12-27 2006-07-06 Amada Company, Limited Work bending angle detecting device and work bending machine
US7802456B2 (en) 2004-12-27 2010-09-28 Amada Company, Limited Work bending angle detecting device and work bending machine

Also Published As

Publication number Publication date
JP2521761B2 (en) 1996-08-07

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees