FIELD: mechanical engineering. SUBSTANCE: invention is designed for provision of accurate turning through preset arbitrary angle. Proposed device has platform body, rigid gear wheel, flexible gear wheel, thrust ball bearing, step motor, bushing, telescopic device and two pressure rollers of wave generator. Platform body is installed on rigid gear wheel and it rests on thrust ball bearing. Flexible gear wheel is secured on base. Stop motor is installed on flange inside flexible wheel. Bushing rigidly fitted on motor shaft is coupled through telescopic device with wave generator pressure rollers. Rollers, in their turn, are pressed by springs in radial direction. EFFECT: enlarged operating capabilities at decreased overall and mass characteristics. 1 dwg
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