CONNECTING ROD MANUFACTURING METHOD AND CONNECTING ROD

    公开(公告)号:US20190195273A1

    公开(公告)日:2019-06-27

    申请号:US16217241

    申请日:2018-12-12

    发明人: Takaaki Kawazoe

    IPC分类号: F16C9/04 B23D31/00 F16C7/02

    摘要: A connecting rod manufacturing method includes: forming, in an inner circumferential surface of a through-hole formed at an end of the connecting rod, a plurality of first holes as fracture start portions such that the first holes are arrayed in an axial direction of the through-hole and extend in a first direction; forming a plurality of second holes as the fracture start portions, each between adjacent ones of the first holes, such that the second holes are arrayed in the axial direction and extend in a second direction different from the first direction relative to the first holes; and fracture-splitting the end of the connecting rod into a rod part and a cap part using the fracture start portions as start points.