Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
COMPACTING METHOD
Document Type and Number:
Japanese Patent JP2001181705
Kind Code:
A
Abstract:

To provide a compacting method capable of releasing a green compact from punches without generating cracking and chipping in such a manner that flashes do not appear on the surface of the compact.

In this compacting method in which, in a state that powder filled into a cavity formed by an upper punch 1, a lower punch 2 and a die 3 is compressed by the upper and lower punches, at first, the die 3 is released, and, after that, the upper and lower punches are released, the free end 5 of a cantilever is elastically brought into contact with at least a part of the side face of the upper punch, the cantilever 4 bends into a shape along the side face of the upper punch when the same goes down the upper punch 1 and compresses the powder. After the compression of the powder and the release of the die 3, in the case the upper punch 1 is raised, the free end 5 of the cantilever slides on the side face of the upper punch as elastically contacted with the same, and, after the free end 5 of the cantilever comes to the end part of the upper punch, the same is brought into contact with the side face of the green compact adhered to the bottom face of the upper punch.


Inventors:
SASAKI YUICHIRO
YAMASHITA FUMITOSHI
Application Number:
JP35925899A
Publication Date:
July 03, 2001
Filing Date:
December 17, 1999
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
B22F3/00; B22F3/035; B30B11/02; H01F41/02; (IPC1-7): B22F3/035; B30B11/02
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)