Method and device for processing asymmetric bionic fish scale type microstructure

Abstract

The invention relates to a machining method and device for an asymmetric bionic fish scale type microstructure. The method comprises the steps that a spiral groove integrated longitudinal torsion cutter handle is designed according to parameters of the position, the rotating direction, the number, the width, the depth and the angle of spiral grooves; based on a finite element analysis method, the target resonant frequency, the target phase difference and the target longitudinal-torsion ratio of the spiral groove integrated longitudinal-torsion cutter handle used for machining the asymmetric bionic fish scale type microstructure are obtained; after a simulation result is consistent with an experiment result, determining a kinematics processing trajectory equation for processing the asymmetric bionic fish scale type microstructure, and establishing a prediction model of the asymmetric bionic fish scale type microstructure with the kinematics processing trajectory equation and processing parameters of the asymmetric bionic fish scale type microstructure; the asymmetric bionic fish scale type microstructure is manufactured through the prediction model, and therefore the asymmetric bionic fish scale type microstructure can be manufactured for the complex outer surface of a high-speed aerial body with high efficiency, high precision and low cost.

Description

technical field [0001] The present application relates to the technical field of functional microstructures, and in particular, to a processing method and device for an asymmetrical bionic fish scale-shaped microstructure. Background technique [0002] Drag reduction is one of the main problems faced in the design process of high-speed vehicles such as aircraft and high-speed trains. It is an important way to save fuel and improve efficiency. At present, the shape design of the aircraft is basically perfect, and the differential pressure resistance and induced resistance have been reduced to the minimum value. It has become a new way to prepare the bionic surface microstructure of the high-speed vehicle to further reduce the drag. However, the small size and complex shape of biomimetic microstructures bring great difficulties to its fabrication, especially in the fabrication of asymmetric biomimetic fish scale microstructures. [0003] The biomimetic microstructure processi...

AI Technical Summary

Problems solved by technology

However, the small size and complex shape of biomimetic microstructures bring great difficulties to its manufacture, especially in the processing and manufacture of asymmetric biomimetic fish scale microstructures.

[0003] The bionic microstructure processing methods in related technologies mainly include mechanical methods, chemical methods and physical methods. Among them, mechanical methods include sandblasting, shot peening and other methods, but the microstructure processed by mechanical methods is irregular and pollutes the environment; chemical methods mainly Including acid etching, anodic oxidation, micro-arc oxidation and other methods, but the microstructures processed by chemical methods are mostly at the nanometer scale, and there are limitations in the preparation of larger-scale microstructures; physical methods mainly include laser beam etching, electron beam etching, etc. By adjusting the process parameters, regular micro-nano structures can be obtained on the material surface, but it is difficult to process asymmetric micro-structures by physical methods, and there are limitations in processing micro-structures on complex curved surfaces.

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