METHOD FOR MANUFACTURING ELECTROSTATIC GYROSCOPE ROTOR Russian patent published in 2024 - IPC G01C25/00 

FIELD: precision instrumentation.

SUBSTANCE: proposed method is intended for use in the manufacture of spherical rotors of electrostatic gyroscopes. On the spherical surface of the rotor, after the operations of eliminating imbalance, spheroiding and polishing in a device with three tubular laps with the application of a preload force P to each of the laps, necessary for polishing the entire surface of the rotor, a raster pattern in the form of n stripes is formed using laser marking technology, the contrast K of which is determined by the expression K=(K_b - K_r )/(K_b + K_r), where K_r and K_b are the reflection coefficients of the base surface of the rotor and the raster surface, respectively, with the location of the raster pattern in the zone of the spherical belt, determined by the latitude angleα. The raster pattern is formed in two stages. At the first stage, laser marking sets the contrast K* >K by reducing the reflection coefficient K_p* of the raster surface to the value K_p* =K_b·(1-Ω·K)/(1+Ω·K), where Ω =(1.5-2.5), and at the second stage the value of K_p* is increased to the value K_p by reducing the roughness of the raster surface through an additional polishing operation, while the force P* of preload applied to each of the laps at the stage of additional polishing is determined from the condition P* =(0.3-0.5)·P·n S_p/S_p, where S_p is the area of one strip of the raster pattern, S_p is the surface area of the rotor. At the first stage, a raster pattern is formed, the contrast of which is due to a change in the structural-phase composition and roughness of the base surface of the rotor, obtaining a contrast higher than the required one. At the second stage, as a result of additional finishing polishing, the roughness of the raster surface decreases, the raster reflectance, as a result, increases, and the contrast of the raster pattern is reduced to the required value. This improves the uniformity of contrast and increases the accuracy of the rotor shape. Additional finishing polishing is limited to processing only the surface of the raster, which is set by the force of pressing the laps to the rotor, and does not change the roughness and, as a consequence, the reflection coefficient of the base surface of the rotor. The technological capabilities of the process of manufacturing the rotor of an electrostatic gyroscope are expanded due to additional control factors for regulating such parameters as contrast and uniformity of contrast of the raster pattern, as well as rotor geometry.

EFFECT: increasing the accuracy of the ESG rotor shape.

1 cl, 1 dwg