Технология изготовления дисковых заготовок переменной толщины для компактных летательных аппаратов

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П.В. Круглов, И.А. Болотина
10 Инженерный журнал: наука и инновации # 9·2017
Method for manufacturing disk blanks
of variable thickness for compact aircraft
© P.V. Kruglov, I.A. Bolotina
Bauman Moscow State Technical University, Moscow, 105005, Russia
The paper suggests an alternative technique for disc blanks manufacture for segmented
edging of the shaped charge. The method enables us to make such a blank in which as the
thickness decreases from the center to the periphery, a periodic thickness profile is
formed in the circumferential direction. The disc metal blank is fixed in a three-jaw chuck
and the end of the disk is trimmed with a decrease in thickness along the generatrix from
the center to the periphery. Under the influence of the clamping forces, the disk blank is
deformed and, after processing, its cross section has a three-sided periodic profile. We
carried out experiments to process disk blanks for different values of the clamping force
in the work tool and obtained the dependencies of the disc thickness on the clamping
force. After harmonic analysis of the thickness of the cross section, we determined the
amplitudes values of harmonics of different thicknesses in the circumferential direction at
different distances from the center of the disk blank.
Keywords: harmonic analysis, blank deformation, technological heredity
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