MODE OF MAKING A BERYLLIUM ROTOR OF AN ELECTROSTATIC GYROSCOPE Russian patent published in 2005 - IPC

FIELD: the invention refers to precision instrument-making industry and may be used in technique of receiving light-wall hollow spherical covering at manufacturing rotors of gyroscopes.

SUBSTANCE: the mode is in forming beryllium hemispheres with variable thickness of walls, an external diameter D_p, considering an allowance Δh for reducing the magnitude of the coefficient of a gage interference K_h=(h_e+Δh)/(h_p+Δh), where h_e and h_p - maximum thickness of the walls in the hemispheres in equatorial flatness of the joint and minimal in the zone of the pole, assemblage of the hemispheres in a welding rigging with tight-fitting punches with a spherical grooves of the diameter D_gr>D_ex, arrangement between punches of a ring insertion with the thickness of δ =(α_r-α_p)·(m-n·α_r/α_p)·D_ex·(360K-ΔT_j), where α_r and α_p - thermal coefficients of linear expansion of the materials of the rotor and the punches in the temperature interval(T_j-T_w), at that α_r >α_P, and 1,2 ≤ α_{r/_}α_{ρ _}≤ 2,6m and n - dimensionless coefficients equal (3,70±0,05) and (1,30±0,05) accordingly, ΔT_j = (T_{w -} T_j)_{[K], Tw[K]- temperature of welding and Tj[K] - temperature of joining determined by equality of diameters Dex=Dgr and making (O,8-0,85) of the temperature at the beginning of the decrystallization Td of the material of the rotor. At that Tw are assigned on condition Td<Tw≤_Tj+360K, and concrete meaning of Tw in indicated interval is chosen as smaller as larger the meaning Kh of the given pair of the hemispheres. So the negative influence is minimized on accuracy of the rotor's degree of gage interference of the hemispheres and anisotropy of the meanings of the thermal coefficients of linear expansion of the material of the hemispheres along the axles of the symmetry and in the perpendicular direction.}

EFFECT: the invention minimizes negative influence on accuracy of the thermal coefficients.