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Guide mechanism and electro-mechanical actuator thereof

A technology of guiding mechanism and linear guide, applied in mechanical equipment, transmission device, belt/chain/gear, etc., can solve the problems of small bearing capacity of guiding mechanism and large friction force of guiding mechanism, so as to improve the bearing capacity and reduce friction. force effect

Inactive Publication Date: 2015-05-13
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a guiding mechanism and its electromechanical actuator to solve the technical problems of high friction and small bearing capacity of the guiding mechanism in the prior art

Method used

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  • Guide mechanism and electro-mechanical actuator thereof
  • Guide mechanism and electro-mechanical actuator thereof
  • Guide mechanism and electro-mechanical actuator thereof

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Embodiment Construction

[0020] Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0021] Such as Figure 1 to Figure 4 As shown, the present invention discloses a guiding mechanism. The guiding mechanism 10 includes a housing 1, a linear guide 2, a ball screw pair 3, a slider 4, and a ball 5. The inner wall of the housing 1 is provided with a groove or A groove is surrounded by multiple walls of the housing 1, the linear guide 2 is located in the groove, and is fixedly connected to the housing 1 by screws, the ball screw pair 3 is arranged in the housing 1, the slider 4 and the ball screw The screw nut 31 in the pair 3 is fixedly connected, and the sliding block 4 can move relatively along the linear guide 2. More specifically, the sliding block 4 can relatively slide along the linear guide 2. The ball 5 is arranged between the slider 4 and the linear guide rail 2. Due to the rolling of the ball 5, the relative moveme...

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Abstract

The invention provides a guide mechanism and an electro-mechanical actuator thereof. The guide mechanism comprises a shell, a linear guide rail, a ball screw pair and a sliding block, wherein a groove is formed in the inner wall of the shell; the linear guide rail is positioned in the groove; the ball screw pair is arranged in the shell; the sliding block is positioned on a screw nut of the ball screw pair; a U-shaped sectional slot for inserting the linear guide rail is formed in the upper surface of the sliding block; the sliding block can relatively move along the two outer side walls of the linear guide rail. The electro-mechanical actuator comprises the guide mechanism. According to the guide mechanism, the sliding block and the linear guide rail relatively roll through a ball, so that friction between the sliding block and the linear guide rail is rolling friction; under the condition of the same load, the friction of the guide mechanism is greatly reduced; furthermore, the linear guide rail is used as a guide rail, and the contact is a ball pair contact; proper elastic deformation can be realized, and the phenomenon of clamping stagnation is avoided; the bearing capacity of the guide mechanism can be improved.

Description

Technical field [0001] The invention relates to the field of actuators, in particular to a guiding mechanism and its electromechanical actuator. Background technique [0002] Electromechanical actuators are important flight control mechanisms used in aerospace vehicles. Electromechanical actuators mainly include servo motors and transmission mechanisms. Among them, the transmission mechanism is mainly used to bear load and transmit torque. In the current transmission mechanism, the ball screw is the most widely used. The ball screw requires a guiding mechanism to convert rotary motion into linear motion. [0003] In the prior art, the guide mechanism is mainly guided by guide blocks and rolling bearings, but these guide mechanisms have certain defects. Among them, due to the friction form of the guide block is sliding friction, the friction force is relatively large, especially the processing and assembly errors will cause large energy loss and reduce the efficiency of the trans...

Claims

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Application Information

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IPC IPC(8): F16H25/22
CPCF16H25/2204
Inventor 崔佩娟刘伟刘亭王春明林晨
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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