Method of joining a member of soft magnetic material to a member of hardened material using a friction weld

A method of joining a magnetic armature of an electromagnetic actuator to a shaft is provided. The method includes holding the armature stationary while spinning the shaft. The spinning shaft is then pressing against the stationary armature such that friction between the shaft and the armature cause...

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Bibliographic Details
Main Author FOCHTMAN; JAMES P
Format Patent
LanguageEnglish
Published 27.06.2000
Edition7
Subjects
ACTUATING-FLOATS
BASIC ELECTRIC ELEMENTS
BLASTING
CLADDING OR PLATING BY SOLDERING OR WELDING
COCKS
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
DEVICES FOR VENTING OR AERATING
ELECTRICITY
ENGINE PLANTS IN GENERAL
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
INDUCTANCES
LIGHTING
MACHINE TOOLS
MACHINES OR ENGINES IN GENERAL
MAGNETS
MECHANICAL ENGINEERING
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SOLDERING OR UNSOLDERING
STEAM ENGINES
TAPS
THERMAL INSULATION IN GENERAL
TRANSFORMERS
TRANSPORTING
VALVES
WEAPONS
WELDING
WORKING BY LASER BEAM
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Summary:A method of joining a magnetic armature of an electromagnetic actuator to a shaft is provided. The method includes holding the armature stationary while spinning the shaft. The spinning shaft is then pressing against the stationary armature such that friction between the shaft and the armature causes a portion of the armature and a portion of the shaft to melt and define a weld joint. The weld joint is permitted to cool thereby joining the shaft to the armature.
Bibliography:Application Number: US19980181193