Friction welding

Details Friction welding Friction welding

1994-05-13

1996-05-21

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156580, 228 21, 228 443, 2281121, B23K 2012

Patent

active

055185622

ABSTRACT:
A new method of friction welding, particularly suitable for manufacturing BLISKS and BLUMS for gas turbine engine rotors, in which the disc or drum rotor is angularly reciprocated while the airfoil blades are pressed radially against the rotor circumference. A machine for carrying out the method has a workpiece holder and a counterbalancing member mounted for angular reciprocation and coupled together by torque transfer means to constitute a resonant system. In operation the machine is driven at or near its natural frequency of oscillation. The natural frequency can be tuned by adjusting the stiffness of the torque transfer means. The machine also includes a drive mechanism.

REFERENCES:
patent: 3840168 (1974-10-01), Searle et al.
patent: 3899378 (1975-08-01), Wragg et al.
patent: 4239575 (1980-12-01), Leatherman
patent: 4905883 (1990-03-01), Searle
patent: 4995544 (1991-02-01), Searle
patent: 5148957 (1992-09-01), Searle
patent: 5203082 (1993-04-01), Bontems

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