Method of manufacturing crankshaft bushing

Details Method of manufacturing crankshaft bushing Method of manufacturing crankshaft bushing

2011-04-26

2011-04-26

King, Roy (Department: 1733)

Powder metallurgy processes

Forming articles by uniting randomly associated metal particles

Consolidation of powders

C419S002000, C419S005000, C419S011000, C419S027000, C419S038000

Reexamination Certificate

active

07931856

ABSTRACT:
A method of forming a crankshaft bushing or similar component is provided. A compaction die is provided having an axial, generally cylindrical internal opening. An upper and a lower punch are provided with exterior surfaces corresponding to the internal opening of the compaction die. An upper core rod passes through an axial opening in the upper punch. A lower core rod passes through an axial opening in the lower punch. The upper core rod and the lower core rod each may have a generally flat external surface section. A metal powder is compacted in the compaction die by the combined action of the upper and lower punches and the upper and lower core rods.

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patent: 2007/0041672 (2007-02-01), Maruyama et al.
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