electromechanical actuator with multi-row ball screw integrated in the drive unit housing and ball screw with a ball screw raceway on an inner surface of a cylindrical member

An electromechanical actuator ("EMA") (100) comprising an actuator drive unit ("ADU") housing (106) and a ball screw (102) is disclosed. The ball screw (102) and ADU housing (106) may interface to form a multi-row thrust bearing (MRTB) (310). Further, the ball screw (102) may be...

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Bibliographische Detailangaben
Hauptverfasser:	Drennen, David, Klode, Harald, Rehfus, Kevin
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AEROPLANES AIRCRAFT ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL AVIATION BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL BRAKES CLUTCHES COSMONAUTICS COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HELICOPTERS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	An electromechanical actuator ("EMA") (100) comprising an actuator drive unit ("ADU") housing (106) and a ball screw (102) is disclosed. The ball screw (102) and ADU housing (106) may interface to form a multi-row thrust bearing (MRTB) (310). Further, the ball screw (102) may be situated at least partially about the ADU housing (106), an outer surface (302) of the ADU housing (106) may include a first ADU raceway (304), and an inner surface (306) of the ball screw (102) may include a second inner ball screw raceway (308). Either or both raceways (304,308) may comprise hemispherical structures. Further, the first raceway (304) and the second raceway (308) may interface to form a multi-row thrust bearing ("MRTB") (310).