Title:
KEY GUIDE MANUFACTURING METHOD AND CYLINDER LOCK MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2016205030
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a technique to form a bearing groove on an a key guide without cutting work.SOLUTION: A key guide manufacturing method prepares a base material having a first face and a second face, which face to each other, and a column face disposed between the first face and the second face. The base material is installed on a holding member that holds the column face of the base material. A cone-shaped groove is formed by punching the first face of the base material installed on the holding member by a cone-shape punch. A column-shaped bearing groove is formed by punching the cone-shaped groove by a column-shaped punch. The second face of the base material on which the bearing groove is formed is formed by press molding.SELECTED DRAWING: Figure 5
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Inventors:
KANAMORI KUNIO
Application Number:
JP2015089785A
Publication Date:
December 08, 2016
Filing Date:
April 24, 2015
Export Citation:
Assignee:
MIWA LOCK KK
International Classes:
E05B15/00; E05B29/00
Attorney, Agent or Firm:
Junichi Omori
Mitsuru Takahashi
Ori Akira
Masayoshi Sekine
Teppei Nakamura
Ayako Kaneko
Nozomi Yoshida
Shintaro Kanayama
Chiba Ayako
Shiraka Tomohisa
Mitsuru Takahashi
Ori Akira
Masayoshi Sekine
Teppei Nakamura
Ayako Kaneko
Nozomi Yoshida
Shintaro Kanayama
Chiba Ayako
Shiraka Tomohisa
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