公开(公告)号：US10300523B2

公开(公告)日：2019-05-28

申请号：US15126810

申请日：2015-03-16

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshiyuki Tanaka ,  Daisuke Miura ,  Takuro Yoshimura ,  Yutaka Takeuchi ,  Daisuke Koshino

IPC: B21D3/16 ,  B21K1/08 ,  F16C3/08 ,  C21D7/04 ,  C21D9/30 ,  F02B75/32

Abstract: A crankshaft that can be strengthened in a short time without being subjected to wasteful processing, and that can be strengthened over a wide range. The crankshaft includes a crank pin and a fillet portion of a journal pin. Compressive residual stress is applied to a region on the fillet portion, which extends at almost equal distances to both sides in a circumferential direction from a portion in which the greatest bending load is applied, and a processing depth for applying the compressive residual stress is gradually decreased in a circumferential direction from the center position in which the compressive residual stress is greatest.

公开(公告)号：US20200307312A1

公开(公告)日：2020-10-01

申请号：US16827749

申请日：2020-03-24

Applicant: HONDA MOTOR CO., LTD.

Inventor： Mitsuru Kamikawa ,  Naoto Shibata ,  Ko Sugai ,  Masafumi Yamamoto ,  Takafumi Murakami ,  Kazuya Kumei ,  Yutaka Takeuchi ,  Masaki Kawamura

IPC: B60B35/12 ,  B23K20/12

Abstract: A drive shaft is configured by joining solid stub shafts formed of a medium carbon steel to both ends of a hollow tubular body formed of a medium carbon steel. When expressed as grain size number, the grain size of the hollow tubular body at joint parts where the hollow tubular body and the solid stub shafts are joined together ranges from #5 to #9, and the grain size of the solid stub shafts at the joint parts ranges from #10 to #12.

公开(公告)号：US11077709B2

公开(公告)日：2021-08-03

申请号：US16827749

申请日：2020-03-24

Applicant: HONDA MOTOR CO., LTD.

Inventor： Mitsuru Kamikawa ,  Naoto Shibata ,  Ko Sugai ,  Masafumi Yamamoto ,  Takafumi Murakami ,  Kazuya Kumei ,  Yutaka Takeuchi ,  Masaki Kawamura

IPC: B60B35/12 ,  B23K20/12 ,  B60B35/14 ,  B23K101/04

Abstract: A drive shaft is configured by joining solid stub shafts formed of a medium carbon steel to both ends of a hollow tubular body formed of a medium carbon steel. When expressed as grain size number, the grain size of the hollow tubular body at joint parts where the hollow tubular body and the solid stub shafts are joined together ranges from #5 to #9, and the grain size of the solid stub shafts at the joint parts ranges from #10 to #12.

公开(公告)号：US20170165742A1

公开(公告)日：2017-06-15

申请号：US15126810

申请日：2015-03-16

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshiyuki Tanaka ,  Daisuke Miura ,  Takuro Yoshimura ,  Yutaka Takeuchi ,  Daisuke Koshino

IPC: B21K1/08 ,  C21D7/04 ,  C21D9/30 ,  F02B75/32 ,  F16C3/08

CPC classification number: B21K1/08 ,  C21D7/04 ,  C21D9/30 ,  F02B75/32 ,  F16C3/08 ,  F16C2202/06

Abstract: A crankshaft that can be strengthened in a short time without being subjected to wasteful processing, and that can be strengthened over a wide range. The crankshaft includes a crank pin and a fillet portion of a journal pin. Compressive residual stress is applied to a region on the fillet portion, which extends at almost equal distances to both sides in a circumferential direction from a portion in which the greatest bending load is applied, and a processing depth for applying the compressive residual stress is gradually decreased in a circumferential direction from the center position in which the compressive residual stress is greatest.