摘要:
An electromechanical actuator housing assembly (100) comprising a reinforcement ring (120) is disclosed herein. The design of the electromechanical actuator housing assembly may be directed to improving load measurment accuracy. The design of the electromechanical actuator housing assembly may be directed to reducing housing deflections. A method of manufacture of an EMA housing assembly is also disclosed herein. This method may include an electromechanical actuator housing assembly having a reinforcement ring.
摘要:
A park brake system for an electric motor actuator (10) is provided. The system may comprise a wrap spring (60) that may rotatably engage a shaft (16). In this regard, the system may be configured to exert a radial force on the shaft (16) of the electric motor actuator (10) to lock the actuator (10). Moreover, in various embodiments, the system may be bi-stable.
摘要:
An electromechanical actuator housing assembly (100) comprising a reinforcement ring (120) is disclosed herein. The design of the electromechanical actuator housing assembly may be directed to improving load measurment accuracy. The design of the electromechanical actuator housing assembly may be directed to reducing housing deflections. A method of manufacture of an EMA housing assembly is also disclosed herein. This method may include an electromechanical actuator housing assembly having a reinforcement ring.
摘要:
A park brake system for an electric motor actuator (10) is provided. The system may comprise a wrap spring (60) that may rotatably engage a shaft (16). In this regard, the system may be configured to exert a radial force on the shaft (16) of the electric motor actuator (10) to lock the actuator (10). Moreover, in various embodiments, the system may be bi-stable.
摘要:
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).
摘要:
An electromechanical actuator ("EMA") may comprise a ball screw (204) having at least one tab (208) extending from an inner surface thereof and/or an actuator drive unit ("ADU") housing (202) that interfaces with the at least one tab (208). The ball screw (204) may include three tabs (208a, 208b, 208c) extending from the inner surface thereof. An outer surface of the ball screw (204) may be threaded to mate with a threaded portion of an inner surface of the ADU housing (202), and/or the ADU housing (202) may interface with the at least one tab (208), and the ball screw (204) may be rotated to translate a ball nut (206) situated concentrically over ball screw (204) axially. The ADU housing (202) may include a gear train assembly (102) having a carrier plate (104), wherein the carrier plate (104) includes at least one receptacle (106).
摘要:
A ring-shaped thrust bearing extending in an axial direction has an inner surface (50) which includes a first axial groove (54a) in the inner surface (50). The groove (54a) has a first flat wall (70) and a second flat wall (72); and a first principal strain sensor (56a) positioned on the first flat wall (70) of the first axial groove (54a) to measure compression in the axial direction.