Title:
HEMMING APPARATUS AND HEMMING METHOD
Document Type and Number:
Japanese Patent JP3623474
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To significantly reduce a process time for hemming by completing a hemming process by rolling-pressing a bending roller only one time in order to solve the conventional problem that it is difficult to reduce a process time because a bending portion after a flange raising process is bent by about 45 degrees by preliminary bending, the posture of a bending roller is changed and the portion is rolling-pressed again carry out a final bending process, e.g. in a hemming process to be applied along the periphery edge of a door panel of an automobile.
SOLUTION: A bending roller R is rolling-pressed along a bending portion (We) in a posture in which a rotation axis R3 is inclined toward a direction of delay of a bending end (Wee) in a plain view with respect to a normal R2 crossing a rolling-pressing direction R1 at right angles. In this way, the portion (We) can be bent with the portion (We) given with a side pressure of a bending direction, and thus the portion (We) can be bent into a folding state only by a single bending process.
More Like This:
Inventors:
Masumi Sawa
Application Number:
JP2001335397A
Publication Date:
February 23, 2005
Filing Date:
October 31, 2001
Export Citation:
Assignee:
Tri Engineering Co., Ltd.
International Classes:
B21D19/08; B21D39/02; B21D53/88; (IPC1-7): B21D39/02; B21D19/08
Domestic Patent References:
| JP11129043A | ||||
| JP50039623B1 | ||||
| JP3018925U | ||||
| JP9508584A | ||||
| JP57124524A | ||||
| JP2070325A | ||||
| JP200162530A |
Attorney, Agent or Firm:
Hidehiko Okada
Toshiyuki Ikeda
Tetsuyuki Iwata
Atsuko Nakamura
Toshiyuki Ikeda
Tetsuyuki Iwata
Atsuko Nakamura
Previous Patent: SURFACE LIGHT LASER INTEGRATING MICROLENS
Next Patent: HAIR TONIC USING JAPANESE RED PINE AND METHOD FOR PRODUCING THE SAME
Next Patent: HAIR TONIC USING JAPANESE RED PINE AND METHOD FOR PRODUCING THE SAME