Title:
カムロブの成形方法
Document Type and Number:
Japanese Patent JP4906676
Kind Code:
B2
Abstract:
A primary intermediate formed article is formed into a substantially columnar shape. A secondary intermediate formed article is obtained by piercing a preliminary hole in the primary intermediate formed article such that a radial thickness of a prospective cam top part is larger than a radial thickness of a prospective cam base part, and by forming a positioning part. The positioning part is brought into contact with a tertiary intermediate forged article forging die so as to be positioned, and the secondary intermediate formed article is pressed and forged to form a tertiary intermediate forged article including a cam top, a cam base, and a deformed hole formed by deforming the preliminary hole. A finished cam lobe is obtained by piercing, in an area including the deformed hole.
Inventors:
Masaaki Kudo
Application Number:
JP2007280280A
Publication Date:
March 28, 2012
Filing Date:
October 29, 2007
Export Citation:
Assignee:
Musashi Seimitsu Industry Co., Ltd.
International Classes:
B21J5/12; B21K3/00; F16H53/02
Domestic Patent References:
| JP2006169961A | ||||
| JP8109809A | ||||
| JP9276976A |