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Кинематический анализ планетарного зубчатого механизма преобразования вращательного движения в возвратно-вращательное

Кинематический анализ планетарного зубчатого механизма преобразования вращательного движения в возвратно-вращательное

Abstract

Механизмы, в которых вращательное движение преобразуется в возвратно-вращательное, широко распространены в машиностроении. Традиционно в качестве таких преобразователей применяют рычажные механизмы, имеющие большие габаритные размеры и малый коэффициент использования объема привода. В связи с этим предложено использовать двухрядный планетарный зубчатый механизм с двумя внешними зацеплениями, в котором круглые колеса заменены на эллиптические, в результате чего за счет переменного передаточного отношения эллиптических колес вращательное движение входного звена преобразуется в возвратно-вращательное движение выходного. Проведен кинематический анализ предложенного механизма, в результате которого найдены функция угла поворота и аналог скорости выходного вала. Показано, что угол качания зависит от выбора эксцентриситетов эллиптических колес и взаимного расположения колес сателлита. Угол качания возрастает с увеличением эксцентриситетов эллиптических колес, при этом наблюдается асимметрия хода выходного вала. Рассматриваемые преобразователи могут быть рекомендованы к применению в машинах, имеющих большой коэффициент изменения скорости хода механизма.

Mechanisms that convert rotational motion into reciprocating rotational motion are widespread in mechanical engineering. Traditionally, these converters are lever mechanisms that have large dimensions, as well as a small volume utilization factor of the drive. It is proposed to use a double-row planetary gear mechanism with two external gears in which circular gearwheels are replaced by elliptic ones. As a result, the rotational motion of the input link is converted into the reciprocating rotational motion of the output link due to the variable gear ratio of elliptical gears. The kinematic analysis of the proposed mechanism is conducted; the rotation angle function and the velocity analogue of the output shaft are determined. It is shown that an oscillation angle depends on the selection of the elliptical gearwheel eccentricities and the position of the satellite gears. The oscillation angle increases with the increase of the wheel eccentricity; and asymmetry of the output shaft speed is observed. The proposed converters can be recommended for use in vehicles that have a large coefficient of the mechanism's velocity change.

Keywords

ПЛАНЕТАРНЫЙ МЕХАНИЗМ,ПРЕОБРАЗОВАНИЕ ДВИЖЕНИЯ,ВОЗВРАТНО-ВРАЩАТЕЛЬНОЕ ДВИЖЕНИЕ,ЭЛЛИПТИЧЕСКИЕ ЗУБЧАТЫЕ КОЛЕСА,КИНЕМАТИЧЕСКИЙ АНАЛИЗ,АНАЛОГ УГЛОВОЙ СКОРОСТИ,УГОЛ КАЧАНИЯ,PLANETARY GEAR,CONVERSION OF MOTION,RECIPROCATING ROTATIONAL MOTION,ELLIPTICAL GEARWHEELS,KINEMATIC ANALYSIS,ANGULAR VELOCITY ANALOGUE,OSCILLATION ANGLE

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze