A 3D printing-based manufacturing method for controllable positioning of high-precision centroids

Abstract

The invention relates to a 3D printing-based method for manufacturing a navigational body with a controllable positioning of a high-precision centroid. The navigational body is divided into a front part and a rear part along a plane perpendicular to the navigation direction and passing through the original centroid position, including: preset processing steps : Preset the position of the target center of mass of the vehicle; Calculation processing steps: According to the mass, volume, density and target position of the center of mass of the vehicle, calculate and obtain the size and position of the first cavity and the second cavity, and Cavity or the quality of the counterweight that the second cavity size coincides; Modeling processing step: Build the first cavity and the second cavity at the front and the rear, and build the counterweight; Printing processing step: Incorporate The flying body after the modeling process is divided into two parts, which are respectively subjected to high-precision 3D printing processing; bonding processing step: embedding the counterweight into the first cavity or the second cavity, and performing bonding processing . The invention realizes precise positioning control of the center of mass of the flying body, and is helpful for accurate control of the flying body.

Description

A 3D printing-based controllable positioning high-precision centroid manufacturing method technical field The present invention relates to the research field of hydrodynamic experiment technology, more specifically, relate to a kind of controllable based on 3D printing A method of manufacturing a vehicle for locating a high-precision center of mass. Background technique In the gliding experiment, the center of mass of the experimental model with uniform mass and the center of hydraulic force do not overlap, plus The asymmetry of the upper and lower surfaces of the structure, and the pitching moment will cause the model to deflect. Therefore, in the actual situation, due to the Due to the complexity of its own structure, its center of pressure and the center of mass often do not overlap, which causes great difficulties to the navigation control of the vehicle. Usually, in the experiment of the voyage body such as the ship model experiment, the quality of the voyage b...

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Problems solved by technology

Therefore, in actual situations, due to the complexity of the structure of the vehicle itself, its pressure center and center of mass often do not overlap, which causes great difficulties in the navigation control of the vehicle

[0003] Usually, in ship model experiments and other flying body experiments, the center of mass of the flying body can often be adjusted by means of counterweights, but due to the low accuracy of the weight position, there will be a certain deviation between the experimental center of mass and the theoretical center of mass, making the experimental Reduced accuracy and effectiveness

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