Title:
METHOD AND DEVICE FOR DECIDING HEATING POINT AND HEATING LINE IN STEEL PLATE BENDING WORK
Document Type and Number:
Japanese Patent JP3679932
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide the method for deciding a heating point and a heating line in steel plate bending work by which the heating point and the heating line are decided without using a wooden pattern and which is useful for automatically deciding the heating point and the heating line.
SOLUTION: When a circular arc in one section of a target shape is shown in a state approximated by a polygonal line No made of a bottom side of joint equilateral triangulars of (m) pieces in two dotted chain line and a circular arc of one section of a measured shape corresponding to this section is shown in a state approximated by a polygonal line Nc made of a bottom side of joint equilateral triangulars of (m) pieces in a solid line, when each side of a polygonal line based on the measured shape shown in the solid line is bent in Δθ(=θo-θc) to be coincided to each side of the polygonal line N based on a target shape, by using this, a heating point is geometrically decided based on a position coordinate of an end point of each side.
Inventors:
Yoshiaki Inoue
Takayuki Kono
Ryuichiro Kikuji
Kazuaki Ota
Hamaya Fukumi
Takeshi Nakahama
Takayuki Kono
Ryuichiro Kikuji
Kazuaki Ota
Hamaya Fukumi
Takeshi Nakahama
Application Number:
JP26108998A
Publication Date:
August 03, 2005
Filing Date:
September 16, 1998
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B21D11/20; (IPC1-7): B21D11/20
Domestic Patent References:
| JP58103914A |
Attorney, Agent or Firm:
Toshiro Mitsuishi
Tadahiro Mitsuishi
Yasuyuki Tanaka
Tadahiro Mitsuishi
Yasuyuki Tanaka