Title:
TOOTHED CYLINDRICAL BODY FORMATION METHOD
Document Type and Number:
Japanese Patent JP2022092911
Kind Code:
A
Abstract:
To reduce the possibility that cracks are generated during processing.SOLUTION: A toothed cylindrical body formation method includes a cylindrical body formation step S300, and a tooth formation step S302. In the cylindrical body formation step S300, a cylindrical body is formed so as to be divided into a tooth formation section, a small outer diameter section and a step section 112. In the tooth formation step S302, the tooth formation section is pressed to a die in a state in which the step section is supported and a part on the other end side of the cylindrical body rather than the step section in the cylindrical body floats. Thereby, a tooth of a gear is formed in the tooth formation section.SELECTED DRAWING: Figure 1
Inventors:
FUJII NAOKI
Application Number:
JP2020205900A
Publication Date:
June 23, 2022
Filing Date:
December 11, 2020
Export Citation:
Assignee:
KANEMITSU KK
International Classes:
B21H5/02; B21D22/16; B21D22/26; B21H5/00
Attorney, Agent or Firm:
Suzue Shoji
Norihisa Mitomo
Norihisa Mitomo