Title:
POWDER METALLURGY PRESS MOLD FOR MANUFACTURING HELICAL GEAR
Document Type and Number:
WIPO Patent Application WO/2018/008967
Kind Code:
A1
Abstract:
The present invention relates to a powder metallurgy press mold and, more specifically, to a powder metallurgy press mold for manufacturing a helical gear, wherein a guide punch is rotated in a guide die, the guide punch having a male spiral gear tooth formed in a lengthwise direction on an outside surface thereof, an upper punch attached to a lower surface thereof, and a bearing assembly attached to an upper surface thereof, the guide die having a female spiral gear tooth formed on an inside surface thereof. Therefore, the powder metallurgy press mold has a simple structure; the guide punch has a relatively large diameter and is thus stably rotated; and the upper punch is attached to the lower surface of the guide punch, but not to the guide die, so as to secure a space for facilitating the motion of a hopper during a molding process.
Inventors:
JEONG SAM-KYUN (KR)
Application Number:
PCT/KR2017/007160
Publication Date:
January 11, 2018
Filing Date:
July 05, 2017
Export Citation:
Assignee:
JEONG SAM-KYUN (KR)
International Classes:
B22F3/00; B22F3/03; B22F5/08
Foreign References:
| JP2000510048A | 2000-08-08 | |||
| JP2013215790A | 2013-10-24 | |||
| JP2000079419A | 2000-03-21 | |||
| JPH09263803A | 1997-10-07 | |||
| JP2001073003A | 2001-03-21 |
Attorney, Agent or Firm:
DOOSUNG PATENT LAW FIRM (KR)
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