EP 0533998 A1 19930331 - Bending machine.
Title (en)
Bending machine.
Title (de)
Biegemaschine.
Title (fr)
Appareil à cintrer.
Publication
Application
Priority
JP 26728091 A 19910918
Abstract (en)
A bend arm (15) is mounted for turning movement on a base frame (10). The bend arm (15) is provided with a bend die (16) and a clamp die (18). The bend arm (15) is connected by a link (28) with a drive arm (26) turned by a output shaft (25) of an electric motor (23). The turning output shaft (25) of the electric motor (23) turns the drive arm (26) directly and the bend arm (15) via the link (28). A work (W) clamped to the bend die (16) by the clamp die (18) is bent on the model of the bend die. The turning speed of the output shaft (25) of the electric motor (23) is controlled by a control system so that the bend arm (15) may be turned at a constant turning speed. It becomes thus possible to bend the work (W) at a prescribed angle accurately even with a bending machine having the electric motor as a drive source and the bend arm (15) moved via the link (28). <IMAGE>
IPC 1-7
IPC 8 full level
B21D 7/024 (2006.01); B21D 7/12 (2006.01)
CPC (source: EP KR)
B21D 7/00 (2013.01 - KR); B21D 7/024 (2013.01 - EP); B21D 7/12 (2013.01 - EP)
Citation (search report)
- [Y] US 4552006 A 19851112 - YOGO TERUAKI [JP]
- [Y] US 4719577 A 19880112 - ELEY DAVID L [US]
- [AD] EP 0370485 A2 19900530 - CHUO DENKI SEISAKUSHO [JP]
- [A] GB 2235640 A 19910313 - USUI KOKUSAI SANGYO KK [JP]
- [A] US 4750346 A 19880614 - TRAUB ZENO P [US]
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0533998 A1 19930331; EP 0533998 B1 19950111; DE 69106708 D1 19950223; DE 69106708 T2 19950907; JP 3136495 B2 20010219; JP H0576945 A 19930330; KR 100221345 B1 19990915; KR 930007530 A 19930520
DOCDB simple family (application)
EP 91117235 A 19911009; DE 69106708 T 19911009; JP 26728091 A 19910918; KR 910018121 A 19911015