Actuating shaft displacement detection microstructure and precision manufacturing process thereof
A displacement detection and precision manufacturing technology, applied in measurement devices, instruments, electrical devices, etc., can solve the problems of heavy weight, large volume, and disadvantageous digital control of aircraft, and achieve the effect of increasing the overall weight and volume
Active Publication Date: 2021-04-06
CHINA PRECISION ENG INST FOR AIRCRAFT IND AVIC
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Problems solved by technology
In the traditional actuation system, the actuator and the displacement sensor are relatively independent components. The actuator acts as the actuator, and the sensor and the actuator are separated. This system is bulky and heavy, which is not conducive to the digital control of the next generation of aircraft
Method used
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Embodiment 1
[0041] On the surface of the actuating shaft of the vector nozzle, a ring-shaped annular groove microstructure distributed along the axial direction is processed, in which the groove width is 2.5mm, the groove depth is 0.2mm, and the distance between the centers of two adjacent grooves is 2.5mm; then the surface spraying technology is used , the first groove from one end of the shaft body is filled with titanium oxide material, and the rest of the groove-like microstructure is filled with aluminum oxide material to ensure that the coating material is dense, and there is no gap greater than 10 μm at the bottom of the groove-like microstructure, while spraying The bonding force between the material and the shaft body is 50.9MPa, and the value of the bonding force is measured by the tensile method experiment; then the surface coating is trimmed with a fine car, so that the surface of the actuating shaft forms sprayed materials and shaft body distributed along the axial direction A...
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The invention provides an actuating shaft displacement detection microstructure and a precision manufacturing process thereof, and relates to the technical field of machinery manufacturing. The method comprises the following steps that a plurality of annular grooves are machined in the outer surface of the actuating shaft body in the axial direction; a first coating in the annular grooves is sprayed at two ends of the actuating shaft body by adopting a surface coating technology, and a second coating is sprayed in the annular groove between the annular grooves at the two ends; the surface coating is trimmed by using a precision machining technology, so that an annular structure in which a coating material and a shaft body material are alternately distributed along the axial direction is formed on the surface of the actuating shaft. The actuating shaft displacement detection microstructure can be used for monitoring an on-machine displacement state of an aircraft actuating shaft, and has excellent performances of high integration, miniaturization, precision and the like; the actuating shaft displacement detection microstructure prepared by the preparation process provided by the invention does not change the mounting form and the boundary dimension of the actuating shaft, and is relatively high in adaptability.
Description
technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a microstructure for detecting displacement of an actuating shaft and a precision manufacturing process thereof. Background technique [0002] In the flight control system of the aircraft, the actuator is the final executive mechanism of each action, and the action of the actuator affects the attitude of the aircraft in the air. The component used to measure the exact position of the actuator in the flight control system is a set of redundant sensors, whose signals are fed back to the computer of the flight control system, and after calculation, the movement command of the actuator is issued to control the attitude of the aircraft. In the traditional actuation system, the actuator and the displacement sensor are relatively independent components. The actuator acts as the actuator, and the sensor is separated from the actuator. The system is bulky and ...
Claims
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IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 李星亮张彬宋影李扬韩如锦
Owner CHINA PRECISION ENG INST FOR AIRCRAFT IND AVIC