Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR WORKING END PART OF LONG SIZE METALLIC MEMBER
Document Type and Number:
Japanese Patent JPH03118920
Kind Code:
A
Abstract:

PURPOSE: To elevate the strength and to improve the appearance by forming a continuous bent part, forming a sharp edge part to a corner part between a bent part and a body part with pressing it from the side end surface or the top end side and cutting the metallic stock to a prescribed shape.

CONSTITUTION: The metallic stock 10 is bent into the body part 11 and the bent part 12. At this time, the surface side of the material is drawn and the corner part 13 makes a thin wall radius shape. The body part 11 is placed on a plate surface of a movable receiving die 31 and the top edge side of the bent part 12 is faced toward the plate surface of a fixed receiving base 32 and assembled. A fixed pressing die 33 and a movable interrupting die 35 are lowered. The bent part 12 having a thickness (a) is compressed in a space formed by dies 31, 33, 35 and the base 32 and formed into a bent part 12a having a thick thickness (b) and a sharp edge 13a is formed. It is trimmed into a prescribed shape in the following stage. It is possible to obtain a member having a pressing bent end part, free from shortage of strength and excellent in appearance.


Inventors:
Koike, Yoshinobu
Motomatsu, Tadashi
Application Number:
JP1989000254523
Publication Date:
May 21, 1991
Filing Date:
September 29, 1989
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HASHIMOTO FORMING IND CO LTD
International Classes:
B23P13/00; B21D5/01; (IPC1-7): B21D5/01; B23P13/00