International Congress on Recent Innovations in Engineering, Science and Technology - Istanbul - Turkey (2019-10-31)

Problems of the precision mechanisms for translation of the opto-mechanics promising directions
The article analyzes the problems of creating translational motion mechanisms used in optical and opto-mechanical tables. The prospects of using a scheme for constructing electromechanical drives with a combination of a stepper motor and a precision actuator, which provides high kinematic and power parameters, are shown. The comparative analysis of the technical characteristics of the known optical and opto-mechanical tables revealed the shortcomings of devices that use ball-screw mechanisms. The most critical disadvantages are low accuracy and lack of smoothness of movement. To eliminate these shortcomings, it is proposed to use new schemes combining a planetary roller-screw mechanism (RSM) with various additional reducers or new RSM schemes built on 3K gears with a support screw. The article presents a comparative analysis of the proposed solutions that allow obtaining a kinematic transfer function of the mechanism from 15 to 80 microns per revolution, which is much better than analogues, high efficiency from 0.45 to 0.69, as well as a compact design of the optical table drive. In addition, the prospects of using RSM with preload in these devices, providing significant reductions in the kinematic error by almost 2 times, are shown. Prototypes and description of perspective mechanisms of optical and opto-mechanical tables are presented.
Assoc. Prof. Elena Novikova, Professor Aleksey Zhdanov, Assoc. Prof. Igor Shinakov, Dr. Valentin Morozov