Friction welding apparatus

Details Friction welding apparatus Friction welding apparatus

1989-12-22

1991-03-12

Heinrich, Sam

Metal fusion bonding

Including means to provide heat by friction between...

228 9, 228103, 228114, 425108, 156378, B23K 2012

Patent

active

049986635

ABSTRACT:
A friction welding apparatus for preparing weldments by fictional contact of the weld members which includes sensors for measuring torque, axial forces, and other variables important to the control of the welding process, and for facilitating the obtainment of process information useful in correlating process conditions with weld quality. The apparatus includes means for the substantially frictionless coupling of the component providing the axial normal force on the aligned shafts upon which the weld pieces are mounted. The coupling, which contributes to accurate torque measurements, comprises a substantially frictionless, single-contact-point coupling provided by the point of contact between two adjacent spherical surfaces. The welding apparatus is also provided with a vacuum-braked air drive assembly for substantially instantaneously stopping relative rotation between the weld members after fusion of the members has occurred, thereby preventing undesirable over-run and resulting stress formation in the weld zone.

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