Title:
粉末金属物品を製造するための方法、高密度化装置及びダイ
Document Type and Number:
Japanese Patent JP4954059
Kind Code:
B2
Abstract:
The invention provides a method and apparatus for densifying the teeth of a powder metal preform gear. The die includes an aperture for receiving a body of the gear and a plurality of grooves for receiving the teeth of the gear. The grooves have a length and a variable width along the length. The grooves narrow tangentially relative to the aperture. The powder metal preform gear is urged through the die and the teeth are plastically and elastically deformed at a relatively narrow portion of the groove. After passing through the narrow portion of the groove and being compressed, the teeth can at least partially recover. The grooves defined by the die can be helical for forming a helical groove.
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Inventors:
Trathoras, Juan, Earl, El
Riley, eric, tee
Riley, eric, tee
Application Number:
JP2007507424A
Publication Date:
June 13, 2012
Filing Date:
April 05, 2005
Export Citation:
Assignee:
PIMG Indiana Corporation
International Classes:
B22F5/08; B21J5/00; B21K1/30; B22F1/00; B22F3/16; B22F3/24; F16H55/06
Domestic Patent References:
| JP8215756A |
Foreign References:
| US6168754 |
Attorney, Agent or Firm:
Sadao Kumakura
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Takamitsu Hoshino
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Takamitsu Hoshino