公开(公告)号：US20170159790A1

公开(公告)日：2017-06-08

申请号：US15324410

申请日：2015-05-28

Applicant: SEOJINCAM CO., LTD.

Inventor： Yong Kyoon KIM ,  Yung Sang PARK ,  Jun Ho SONG ,  Keun Ho KANG ,  Jong Hun SONG

IPC: F16H53/02 ,  B21D53/84 ,  B23K20/02 ,  F01L1/047

CPC classification number: F16H53/025 ,  B21D53/845 ,  B23K20/02 ,  F01L1/047 ,  F01L1/08 ,  F01L13/0036 ,  F01L2001/0471 ,  F01L2001/0473 ,  F01L2103/00

Abstract: Provided is a concentric camshaft and a method of manufacturing the same, in which at least one of a fixed cam and a rotatable cam is a sintered cam configured to fix the cam and an inner piece through diffusion bonding, capable of reducing a machining amount, simplifying a manufacturing process because a heat treatment process for improving cam surface hardness is unnecessary, and being applied to an engine having a small space because the weight is reduced through a weight-reducing structure of a surface of the cam and a width of the inner piece is reduced.