Friction welding apparatus

Details Friction welding apparatus Friction welding apparatus

1997-07-22

1998-12-15

Sells, James

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

156 735, 228 21, B23K 2012

Patent

active

058491465

ABSTRACT:
The frictional loads involved in a friction welding operation, for joining metal parts, may be several tons and the mass of the welding apparatus is correspondingly large. Thus, in addition to the energy which is converted into heat at the weld interface a substantial amount of work has to be done simply to overcome the inertial loads of the apparatus. An inertial load cancelling system is proposed in which a double acting gas spring arrangement is coupled to the welding oscillator output so that the work done in overcoming the inertia of the apparatus is returned to the system when the oscillator motion is reversed at the ends of each stroke. Thus, after the initial system input the oscillator has only to supply work to overcome internal frictional and that converted to frictional heat at the weld joint interface.

REFERENCES:
patent: 3614828 (1971-10-01), Maurya et al.
patent: 3840168 (1974-10-01), Searle et al.
patent: 4844320 (1989-07-01), Stokes et al.
patent: 4905883 (1990-03-01), Searle
patent: 4995544 (1991-02-01), Searle
patent: 5100044 (1992-03-01), Searle
patent: 5188279 (1993-02-01), Joyce et al.

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