Title:
COLD MACHINING TOOL
Document Type and Number:
Japanese Patent JPS62144839
Kind Code:
A
Abstract:
A cold-working tool for thrusting an attached mandrel (14) partially through a hole in a metal workpiece and extracting the mandrel from the hole is disclosed. The tool comprises a pneumatic riveting gun (12) that has a body (21), a handle portion (22), and an elongate barrel (24). A boss (30) is slidably retained within the outer end of the barrel. The mandrel is attached to the outermost end of the boss. The mandrel has an enlarged diameter portion (38). The riveting gun is connected to a source of pressurized air so that the impulsive forces generated by the riveting gun are transmitted through the boss to the mandrel for thrusting the mandrel through the hole. The tool also includes a housing (56) that substantially encloses the body and barrel of the gun, the housing has a forward end and a rearward end. A nose cap (72) is attached to the forward end of the housing to substantially enclose the boss with the mandrel projecting through a hole in the nose cap. A piston and cylinder assembly (18) is attached to the rearward end of the housing. The piston and cylinder assembly includes a piston (68) and protruding piston rod (70) having an outermost end attached to the body of the gun. The mandrel is extracted from the hole by positioning the housing and attached nose cap between the cylinder (62) of the piston and cylinder assembly and the metal member and then introducing pressurized fluid into the cylinder so that the piston will forcibly pull the gun away from the metal workpiece to extract the attached mandrel therefrom. The tool also includes an operating system that causes the tool to alternately thrust the mandrel through the hole and extract it therefrom.
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Inventors:
JIYON EICHI WAIGENSUTAIN
Application Number:
JP27084686A
Publication Date:
June 29, 1987
Filing Date:
November 13, 1986
Export Citation:
Assignee:
BOEING CO
International Classes:
B21J5/00; B21D28/24; B21J15/00; B21J15/10; B21J15/14; B21J15/16; B21J15/36; B23P9/02; (IPC1-7): B21D28/24; B21J5/00; B21J15/10
Attorney, Agent or Firm:
Fukami Hisaro