EP 0316703 A3 19900711 - METHOD AND APPARATUS FOR BENDING WORK PIECES
Title (en)
METHOD AND APPARATUS FOR BENDING WORK PIECES
Publication
Application
Priority
DE 3739173 A 19871119
Abstract (en)
[origin: JPH01162520A] PURPOSE: To correctly bend a workpiece into a set bending angle by detecting a bending angle with a detector, comparing with a specified value and executing additional bending when the workpiece to be bent is fixed on a fixing pedestal and bent by the rotation of a sector turning member. CONSTITUTION: The workpiece 1 to be bent into a prescribed angle is placed on the fixing pedestal 3 and fixed on the fixing pedestal 3 by lowering a vertical moving member 2. Next, two sector turning members 4, 5 are respectively turned upward in the X direction shown by an arrow around respective rotating shafts M as the center, the workpiece 1 to be bent is bent to form rising pieces 6, 7 and bent into a U shape. In such a case, the sensor 8 is abutted on one side arm 13 of a L shape member 12 in the detector R which is provided within the vertical moving member 2, a detecting pin 15 is abutted on the other side arm 14 and pressurized by a spring 17. The bent rising piece 6 is brought into contact with the tip end of the detecting pin, the L shape piece is turned around a shaft A as the center, and the bending angle W is detected with the detecting sensor 8. This is compared with the set bending angle by a computer or the like, an additional bending quantity is decided so as to bend it into the prescribed angle, the rising piece 6 is correctly bent into the set angle by turning the sector turning member 4 again. The similar bending is also executed with respect to the other side rising piece 7.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
B21D 5/042 (2013.01 - EP US); B21D 28/10 (2013.01 - EP US); Y10S 72/702 (2013.01 - EP US)
Citation (search report)
- [X] EP 0166351 A2 19860102 - STUCKI ARNOLD
- [Y] DE 8221104 U1 19860528
- [Y] DE 2704399 A1 19780810 - FASTENRATH FASTI WERK
- [Y] EP 0242309 A1 19871021 - FAVRIN PIERRE
- [Y] US 4002049 A 19770111 - RANDOLPH SR ALLAN EMERSON
- [X] DE 3441113 A1 19860515 - KLOECKNER MOELLER ELEKTRIZIT [DE]
- [A] US 4133198 A 19790109 - HUDA JOSEF, et al
- [A] EP 0063041 A2 19821020 - PA CONSULTING SERVICES [GB]
- [Y] WERKSTATT UND BETRIEB, Band 103, Nr. 4, April 1970, Seiten 289-293, München, DE; G. OEHLER: "Unterschnittene Biegeteile"
Designated contracting state (EPC)
AT CH ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0316703 A2 19890524; EP 0316703 A3 19900711; DE 3739173 A1 19890601; JP H01162520 A 19890627; RU 1806031 C 19930330; US 5007264 A 19910416
DOCDB simple family (application)
EP 88118510 A 19881107; DE 3739173 A 19871119; JP 28262288 A 19881110; SU 4613135 A 19881117; US 26919288 A 19881109