SU842316A1

SU842316A1 - Method and apparatus for compensating reversive drive lost motion

Info

Publication number: SU842316A1
Application number: SU792809720A
Authority: SU
Inventors: Александр Афанасьевич Качурин
Original assignee: Предприятие П/Я В-2302
Priority date: 1979-08-13
Filing date: 1979-08-13
Publication date: 1981-06-30

Description

Изобретение относится к машиностроению, а именно к компенсации мертвого хода зубчатых реверсивных передач.The invention relates to mechanical engineering, and in particular to compensation for the free movement of reverse gears.

Известен способ компенсации мертвого хода реверсивного привода, включающего основную и вспомогательную зубчатые передачи, заключающийся в том, что разворачивают входные звенья основной и вспомогательной зубчатых передач одно относительно другого до полного выбора «мертвого» хода во всей кинематически цепи [1].A known method of compensating for the dead travel of a reverse drive, including the main and auxiliary gears, which consists in deploying the input links of the main and auxiliary gears relative to one another until the complete selection of the “dead” stroke in the entire kinematic chain [1].

Способ осуществляется устройством, содержащим соосно расположенные входные звенья, предназначенные для присоединения к основной и вспомогательной зубчатым передачам.The method is carried out by a device containing coaxially located input links intended for connection to the main and auxiliary gears.

Недостатком известнрго способа является влияние погрешностей изготовления звеньев привода, в результате которых в зацеплении отдельных звеньев при работе привода периодически возникают натяги, что требует увеличения подводимой мощности и снижения КПД привода.A disadvantage of the known method is the influence of errors in the manufacture of drive links, as a result of which interferences occur periodically in the engagement of individual links during drive operation, which requires an increase in input power and a decrease in drive efficiency.

Цель изобретения — исключение влияния погрешностей изготовления звеньев привода.The purpose of the invention is the elimination of the influence of manufacturing errors of drive links.

ХОДА РЕВЕРСЙВН^^КгЗй/.йREVERSE PROGRESS ^^ KgZy / .y

ОСУЩЕСТВЛЕНИЯIMPLEMENTATION

Δ = Лтал — Δ<__; где максимально возможная суммарная кинематическая погрешность всей кинематической Ю цепи, приведенная к одному из входных звеньев;Δ = Ltal - Δ <_ _; where is the maximum possible kinematic error of the entire kinematic Yu chain, reduced to one of the input links;

Δί - суммарная кинематическая погрешность всей кинематической цепи, приведенная к этому звену в положении, соот» 15 ветствующем моменту полного выбора мертвого хода и фиксируют выходные звенья одно относительно другого.Δί is the total kinematic error of the entire kinematic chain reduced to this link in the position corresponding to the moment of the complete selection of the dead stroke and fix the output links one relative to the other.

Устройство, позволяющее осуществить предлагаемый способ, снабжено двумя упора²⁰ ми, взаимодействующими один с другим, один из которых жестко установлен на входном звене, предназначенном для присоединения к основной зубчатой передаче, а дру гой — на втором звене с возможностью поворота и фиксации относительно него.The device that allows the proposed method to be implemented is equipped with two stops ²⁰ interacting with one another, one of which is rigidly mounted on the input link intended for connection to the main gear transmission, and the other on the second link with the possibility of rotation and fixing relative to it.

На фиг. 1 показана кинематическая схема привода с устройством для реализации предлагаемого способа; на фиг. 2 — узел I на фиг. 1 в увеличенном масштабе; на' фиг. 3 — разрез А—А на фиг. 2.In FIG. 1 shows a kinematic diagram of a drive with a device for implementing the proposed method; in FIG. 2 - node I in FIG. 1 on an enlarged scale; in FIG. 3 - section A — A in FIG. 2.

Привод состоит из основной 1 и вспомогательной 2 зубчатых передач, замыкающихся на общем ведомом звене 3. Обе передачи 1 и 2 включают в себя соосно расположенные входные звенья 4 и 5 устройства компенсации мертвого хода, установленные на ведущем валу 6. Входное звено 4 снабжено установленным на его торце жестким упором 7, а входное звено 5, установленное с возможностью разворота на звене 4, снабжено установленным также на его торце упором 8, размещенным с возможностью поворота и фиксации относительно звена 5.The drive consists of the main 1 and auxiliary 2 gears that are closed on a common driven link 3. Both gears 1 and 2 include coaxially located input links 4 and 5 of the device for the compensation of the deadlock mounted on the drive shaft 6. The input link 4 is equipped with mounted its end face with a hard stop 7, and the input link 5, mounted with the possibility of a turn on the link 4, is equipped with a stop 8 installed at its end, placed with the possibility of rotation and fixing relative to the link 5.

Разворотом входного звена 5 относительно входного звена 4 выбирают мертвый ход во всей кинематической цепи привода. После этого упор 8 подводят к упору 7 и фиксируют упор 8 относительно звена 5 с небольшим усилием фиксации, обеспечивающим перемещения упора 8 при холостом прокручивании привода.By turning the input link 5 relative to the input link 4, a free stroke is selected in the entire kinematic chain of the drive. After that, the emphasis 8 is brought to the emphasis 7 and the emphasis 8 is fixed relative to the link 5 with a small clamping force, providing movement of the emphasis 8 when the drive is idled.

Прокручивают привод на холостом ходу, и при превышении погрешностью на его звеньях величины Δί упор 8 начинает сдвигаться относительно упора 7, а при погрешности какого-то звена, достигающей .величины Δ i , упор 8 сдвигается на максимальную величину, соответствующую вели'чине А = А м*л· — Δ i .The drive is idled, and when the error on its links exceeds the Δ величины value, the stop 8 starts to shift relative to the stop 7, and when an error of some link reaches the Δ i value, the stop 8 is shifted by the maximum value corresponding to the value A = And m * l · - Δ i.

В этом положении упор 8 жестко фиксируется на звене 5.In this position, the emphasis 8 is rigidly fixed on the link 5.

Во время работы привода при таком положении упора 8 натягов в зацеплении отдельных звеньев не будет, а величина зазоров будет оптимально малой.·During operation of the drive with this position of the stop 8 interference, there will be no interference in the engagement of the individual links, and the gap will be optimally small.

Изобретение позволяет повысить КПД привода и снизить влияние погрешностей изготовления звеньев на работу привода.The invention improves the efficiency of the drive and reduce the influence of manufacturing errors of links on the operation of the drive.

Claims

(54) DRIVE COMPENSATION METHOD AND DEVICE The invention relates to mechanical engineering, in particular, to compensation for the dead run of a gear reversing gear. A known method for compensating for the dead stroke of a reversing drive, including the main and auxiliary gears, consists in expanding the input links of the main and auxiliary gears one relative to the other to complete the selection of the "dead stroke throughout the kinematically chain 1. The method is performed by a device containing located input links for connection to main and auxiliary gears. A disadvantage of the known method is the effect of errors in the manufacture of drive units, as a result of which intermittent tension occurs in the engagement of individual links during drive operation, which requires an increase in the input power and a decrease in the drive efficiency. The purpose of the invention is to eliminate the influence of errors in the manufacture of drive units. YOUR REVERSE REVERSIBLE UNION OF I / I OF ITS IMPLEMENTATION CD:.;. ",. ,, - - “y s-,: T Hy:; sag;, dz 4 o 4gi i -. V, -t-. The goal is achieved by scrolling the drive at idle before turning the input links one relative to the other in the direction of increasing the backlash by an amount not less than: Dtol - Dz where D d is the maximum possible total kinematic error of the entire kinematic chain reduced to one of the input links; Y;, is the total kinematic error of the entire kinematic chain, reduced to this link in the position corresponding to the moment of complete selection of the dead stroke, and the output links are fixed one relative to the other. A device that allows the proposed method to be implemented is provided with two stops interacting with one another, one of which is rigidly mounted on the input link intended for attachment to the main gear train, and the other on the second link with the possibility of rotation and fixation relative to it. FIG. 1 shows a kinematic diagram of a drive with a device for implementing the proposed method; in fig. 2 — node I in FIG. 1 on an enlarged scale; in fig. 3 shows section A-A in FIG. 2. The drive consists of a main I and auxiliary 2 gears, which are closed on a common slave link 3. Both gears 1 and 2 include coaxially arranged input links 4 and 5 of the dead-stroke compensation device mounted on the drive shaft b. The input link 4 is provided with a fixed stop 7 mounted on its end, and the input link 5, installed with the possibility of turning on link 4, is equipped with the support 8 installed also on its end, placed with the possibility of rotation and fixation relative to the link 5. The turn of the input link 5 relative to the input Link 4 select a dead stroke throughout the kinematic drive chain. After that, the stop 8 is brought to the stop 7 and the stop 8 is fixed relative to the link 5 with a small locking force, which ensures the movement of the stop 8 when the drive is idle. The drive is scrolled at idle, and when the error on its links of Ai is exceeded, the stop 8 begins to move relative to the stop 7, and when an error of some link reaches the value D (the stop 8 moves to the maximum value corresponding to the value of L D me .je - D /. In this position, the stop 8 is rigidly fixed on the link 5. During operation of the drive in such a position of the stop 8, there will be no tensions in the engagement of individual links, and the size of the gaps will be optimally small. The invention improves the efficiency of the drive and reduces influenced of errors in the production of links to drive operation. Claim 1. A method for compensating the dead stroke of a reversing drive including main and auxiliary gears, consisting in that the input links of the main and auxiliary gears are turned one on top of the other to a complete choice of dead stroke throughout the kinematic chain characterized in that, in order to eliminate the influence of errors in the manufacture of the drive links, the drive is turned idle before turning the input links th relative to the other in the direction of increasing magnitude of backlash at least Lmahmaksimalno possible total kinematic error of the entire kinematic chain, the reduction to one of the input links; & 1 is the total kinematic error of the entire kinematic chain, reduced to this link in the position corresponding to the moment of complete selection of the dead stroke, and the output links are fixed one relative to the other.

2. An apparatus for carrying out the method of claim 1, comprising a main and auxiliary gears, comprising coaxially arranged input units for connection to the main and auxiliary gears, characterized in that it is provided with two stops interacting with each other, one of which are rigidly mounted on the input link, intended to be attached to the main gear. and the other on the second link with the ability to rotate and fix relative to it. Sources of information taken into account during the examination 1. Kozhevnikov S. N. Mechanisms. M., “Mechanical Engineering, 1976, p. 166 ,. rice 3.42 (prototype).

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