Method of forming fracture start portion of connecting rod and forming device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10052702
APP PUB NO 20160074949A1
SERIAL NO

14784695

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Abstract

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A method of forming a fracture start portion of a con rod for forming fracture start portions of a con rod at opposing positions in an inner peripheral surface of a large end of the con rod made of metal, includes a first step of forming a groove portion at a position corresponding to the fracture start portion by using a first insert tip with a large tip end and a second step of forming the fracture start portion, which has become a V-shaped groove, by machining a bottom portion of the groove portion smaller by using a second insert tip having a tip end smaller than the first insert tip.

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Patent Owner(s)

Patent OwnerAddress
YASUNAGA CORPORATIONIGA-SHI MIE 518-0834

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kaimasu, Yuji Iga, JP 2 0
Matsui, Jungo Iga, JP 2 0

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