SU1268439A1

SU1268439A1 - Instrument for drawing curves

Info

Publication number: SU1268439A1
Application number: SU853907949A
Authority: SU
Inventors: Эмиль Григорьевич Бергер; Вячеслав Петрович Табацков
Original assignee: Херсонский Индустриальный Институт
Priority date: 1985-06-05
Filing date: 1985-06-05
Publication date: 1986-11-07

Abstract

Изобретение относитс к прибору дл вычерчивани кривых и позвол ет расширить диапазон их. Кулиса 2 установлена в поворотном ползуне 3 и соединена с кривошипом 1 в шарнире А. Поворотна линейка 4 жестко скреплена с кривошипом 1. Ползун 5 и рычаг 6, шарнирно св занный с ползуном 5 и кулисой 2, несут два пишущих штифта в точках М и N. Длина кривошипа 1 и рассто ние ОС между шарнирами равны R, а длина рычага 6 и рассто ние AN между шарнирами кулисы 2 равны 1. Пишущий штифт в точке N вычерчивает улитки Паскал , уравнение которых в системе с полюсом С имеет вид CN f -The invention relates to a device for drawing curves and allows to expand their range. Girder 2 is mounted in pivot slider 3 and connected to crank 1 in hinge A. Pivoting ruler 4 is rigidly fastened to crank 1. Slider 5 and lever 6 pivotally connected to slider 5 and link 2 are carried by two writing pins at points M and N The length of the crank 1 and the distance between the OS between the hinges are equal to R, and the length of the lever 6 and the distance AN between the hinges of the backstage 2 are equal to 1. The recording pin at point N draws Pascal snails, the equation of which in the system with a pole C is CN f -

Description

Изобретение относится к чертежным приборам для воспроизведения кривых и может быть использовано для механизации чертежно-графических и разметочных работ, а также в учебном про- 5 цессе в вузах, предназначен для черчения кривых, известных под названием улиток Паскаля, кардиоиды и нефроиды.The invention relates to drawing instruments for reproducing curves and can be used for mechanization of drawing, graphic and marking works, as well as in the educational process at universities, it is intended for drawing curves known as Pascal snails, cardioids and nephroids.

Цель изобретения - расширение диа' 10 пазона вычерчиваемых кривых.The purpose of the invention is the expansion of the dia '10 range of the drawn curves.

На чертеже изображена кинематическая схема прибора.The drawing shows a kinematic diagram of the device.

Прибор содержит кривошип 1, соединенную с ним в шарнире А кулису 2, 15 установленную в поворотном ползуне 3$ поворотную линейку 4, жестко скрепленную с кривошипом 1, ползун 5, рычаг 6, шарнирно связанный с ползуном 5 и кулисой 2, и два пишущих штифта 20 установленных на ползуне 5 и кулисе 2 (точки М и N) . ,The device contains a crank 1 connected to it in a hinge A to a link 2, 15 mounted in a rotary slider 3 $, a rotary ruler 4, rigidly fastened to a crank 1, slider 5, a lever 6, pivotally connected to a slider 5 and a link 2, and two writing pins 20 installed on the slider 5 and the wings 2 (points M and N). ,

Длина кровишипа 1 и расстояние ОС между шарнирами равны R, а длина рычага 6 и расстояние AN между шарнирами 25 кулисы 2 равны 1. ,The length of the bleach 1 and the distance OS between the hinges are equal to R, and the length of the lever 6 and the distance AN between the hinges 25 of the link 2 are equal to 1.,

При вращении кривошипа 1 пишущий штифт N, закрепленный на кулисе. 2, вычерчивает улитки Паскаля, уравнение которых в системе с полюсом зо С имеет видWith the rotation of the crank 1, the writing pin N, mounted on the wings. 2, draws Pascal's snails, the equation of which in the system with a pole C ° has the form

CN = С = - (2R coso/- 1), где Э - угол между кулисой 2 и осью X.CN = C = - (2R coso / - 1), where E is the angle between the link 2 and the X axis.

В частном случае 1 = R (кривая является кардиоидой).In the particular case, 1 = R (the curve is a cardioid).

Пишущий‘штифт М, установленный на ползуне 5, вычерчивает нефроиду, уравнение которой в системе с полюсом 0 имеет видThe writing pin M, installed on slider 5, draws a nephroid whose equation in a system with pole 0 has the form

ОМ = J = 21 . созХ - R, где Ч> - угол между линейкой 4 и осью X.OM = J = 21. cosX - R, where>> is the angle between the ruler 4 and the X axis.

Настройка прибора осуществляется регулировкой длины кривошипа 1 и рычага 6 и перестановкой шарнира N на кулисе 2 и ползуна 3 на основании.The device is adjusted by adjusting the length of the crank 1 and the lever 6 and moving the hinge N on the wings 2 and the slider 3 on the base.

Применение предлагаемого прибора позволит повысить эффективность выполнения графических работ.The use of the proposed device will improve the efficiency of graphic work.

Claims

The invention relates to drawing instruments for reproducing curves and can be used for mechanization of drawing and graphic works and dimensional work, as well as in the educational process at universities, it is intended for drawing curves known as Pascal snails, cardioids and nephroids. The purpose of the invention is to expand the range of curves to be drawn. The drawing shows the kinematic diagram of the device. The device contains a crank 1 connected to it in the hinge A to the rocker 2, installed in the rotary slider 3 swivel ruler 4, rigidly fastened with the crank 1, the slider 5 "lever 6, hinged to the slider 5 and the slide 2, and two pisches; their pins are mounted on slider 5 and link 2 (points M and N). The length of the blood pin 1 and the distance between the joints between joints are R, and the length of the lever 6 and the distance AN between joints of the wings 2 are equal to 1. When the crank 1 rotates the writing pin N, fixed on the wings 2, draws Pascal snails, the equation of which in the system with pole C has the form CN f - (2R-cos (Y - 1), where C5 (is the angle between link 2 and axis X. In the particular case t R (the curve is a cardioid). The writing pin M mounted on the slider 5 traces the nephroid , the equation of which in the system with a pole O has the form OM 1 21. cos- | - - R, where is the angle between the ruler 4 and the X axis. The instrument is adjusted by adjusting the length of crank 1 and lever 6 and shifting the hinge N on the link 2 and slide 3 on the base. The use of the proposed device will improve the efficiency of graphic work. Claims An apparatus for drawing curves, comprising a crank and an articulated link hinged to it, carrying a writing pin that distinguishes c. by the fact that, in order to expand the range of the curves drawn, it has a rotating ruler rigidly attached to the crank, and a lever pivotally connected to the link with the slide and the other end connected to the ruler by means of a slider hinged on it, and an additional writing pin mounted on the ram .