Guide block for preventing linear displacement blocking of electromechanical actuator

Abstract

The invention discloses a guide block for preventing linear displacement blocking of an electromechanical actuator. The section of the guide block is T-shaped; the width of the narrow edge of the T-shaped section is 0.6-2mm less than the width of the wide edge; threaded holes are uniformly distributed in the guide block in the length direction; on end of the narrow edge of the T-shaped section is fixed on the inner wall of an electromechanical actuator shell through a screw to ensure that the guide block is located in a guide slot of a lead screw nut; the distance between the upper end face of the nut in the guide slot and the interface between the narrow edge and the wide edge of the T-shaped section is 0.35-0.75mm; the fit clearances between the two end faces of the wide edge of the T-shaped section and the guide slot satisfy 0.01-0.02mm, and the depth of parallelism is 0.01-0.02mm.

Description

Technical field [0001] The patent of the invention relates to a guide block, which is especially suitable for the linear displacement transmission guide of the lead screw in the electromechanical actuator of aviation, aerospace and aerospace. Background technique [0002] The electromechanical servo mechanism is an important flight control mechanism used in aviation, aerospace, aerospace and other aircraft. The electromechanical servo system is developing rapidly, and its application is expanding rapidly. Compared with the hydraulic servo, the electromechanical servo has its outstanding advantages, so in the future The application and development prospects of the company are very broad. [0003] The electromechanical servo mechanism converts the alternating rotation of the motor into the linear motion of the screw. In order to control the screw not to rotate, but only move in a straight line, we must design a linear direction guide, which has rolling friction and sliding friction. ...

AI Technical Summary

Problems solved by technology

[0003] The electromechanical servo mechanism converts the alternating rotation of the motor into the linear motion of the screw. In order to control the screw to not rotate, but only to move in a straight line, we need to design a guide in the linear direction. The guide has rolling friction and sliding friction. The friction space is large and the processing is difficult. Because the electromechanical actuators of aviation, spaceflight and aerospace require small space and light weight, there is an urgent need for a guide block that is light in weight, anti-jamming, and easy to process. This invention is a sliding Friction, in the past, the sliding guide block had the phenomenon of seizure or jamming with the lead screw nut. The seizure or jamming would cause the electromechanical actuator to lose its function or even be destroyed. For this reason, an electromechanical actuator was invented to prevent linear Displacement jammed guide blocks to prevent electromechanical actuators from being seized and jammed

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