Title:
METHOD FOR BENDING SHEET AT ACUTE ANGLE
Document Type and Number:
Japanese Patent JPH0970620
Kind Code:
A
Abstract:
To provide a method for bending a sheet at an acute angle capable of eliminating local steps in a bent part in achieving the sheet at an acute angle, preventing the strength of the bent part from being reduced, simplifying a bending equipment, and reducing the number of working processes.
When bending is achieved with a bending punch 11 in which a joint part 7 to a continuous strip-shaped stock frame 1 is made small as small as possible and the bending angle A is given to satisfy the desired bending angle, and a bending die 12 located opposite thereto, the joint part 7 is tilted by the angle B of tilt of the tip is within the elastic limit of the sheet of the stock frame 1 set to the bending punch 11.
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Inventors:
MIYAZAKI OSAMU
KUBOKI YASUO
NAKANO SHINJI
KUBOKI YASUO
NAKANO SHINJI
Application Number:
JP22877095A
Publication Date:
March 18, 1997
Filing Date:
September 06, 1995
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
B21D11/10; B21D5/01; (IPC1-7): B21D5/01; B21D11/10
Attorney, Agent or Firm:
Tomoyuki Takimoto (1 person outside)
Next Patent: METHOD AND EQUIPMENT FOR BENDING METAL SHEET