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Title:
MANUFACTURING METHOD OF SLEEVE FOR PIPE JOINT
Document Type and Number:
Japanese Patent JP2020179482
Kind Code:
A
Abstract:
To provide a manufacturing method capable of manufacturing a sleeve for welding of a metal seal joint by using a tubular material.SOLUTION: A manufacturing method of a sleeve for a pipe joint includes the first step for creating the outer peripheral surface of the sleeve, by cutting the periphery with a lathe in the state where the periphery of a cylindrical stock 60 is grasped by a chuck 51, the second step for creating an inner peripheral surface 16 of the sleeve coaxially with the outer peripheral surface, by cutting an inner peripheral part with tools 57, 58 each having only one cutting blade in a circumferential direction in the state where the periphery of the cylindrical stock 60 is grasped by the chuck 51, and the third step for forming a seal portion 14 of the sleeve, by cutting one end side of the cylindrical stock 60.SELECTED DRAWING: Figure 4

Inventors:
SUZUKI TAKEYUKI
NOJIMA SHINYA
NAKAMURA MASAHIRO
Application Number:
JP2019085538A
Publication Date:
November 05, 2020
Filing Date:
April 26, 2019
Export Citation:
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Assignee:
FUJIKIN KK
International Classes:
B23B1/00; B23B5/00; B23B35/00; B23D77/00; B23H9/00
Attorney, Agent or Firm:
Patent business corporation ken intellectual property general office



 
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