SU825359A1 - Curve-drawing appliance - Google Patents

Description

one

This invention relates to graphical IMM devices for drawing mathematical curves such as parabola, ellipse, hyperbola and Nichomed conchoid.

A known device for drawing curves, comprising a horizontal guide with a slider carrying a cross bar, a swivel ruler that is pivotally connected to it, a carrier of rearranged sliders with writing nodes, and a slide connected with the ruler line, and with a traverse by means of two pivotally connected sliders with writing node.

The known device allows to draw the conchoid Nicomedes and a parabola. Drawing only two curves limits its use.

The purpose of the invention is to expand the range of tracing such curves as ellipse and hyperbole.

To achieve this goal, the device has a vertical guide, a slide placed on it with a lock and a lock of the angular position of the link, mounted on the slide, connecting a ruler and slide, while the specified slide and slide

Noah guide pivotally interconnected.

FIG. Figure 1 shows the kinematic diagram of the instrument; in fig. Option 2 for setting the instrument for drawing an ellipse; in fig. 3 - the same for hyperbole.

The device has .. A horizontal guide 1 with a slider 2 carrying, a traverse 3, a swivel ruler 4 pivotally connected to the slider 2, passing through a slider 5 pivotally connected to the slider 6 by a vertical guide 7. The slider 5 is pivotally connected to the slide 8, connected with pivotally connected sliders 9 and 10 with traverse 3. On a ruler 4 sliders 11-13 are placed with writing units and clamps, writing a node is also placed in the swivel joint of sliders 9 and 10. Slider 6 is equipped with a clamp 14, and the slide 5 is locked 15 angular position of the scenes eight.

The curves of the proposed instrument are drawn as follows.

To draw a parabola and a curve you need to fix

Claims (1)

the hinge C is stationary relative to the xOu plane; at the same time, install the link 8 perpendicular to the slide 5 ,. and then moving the slider 2 along the horizontal guide 1, a parabola drawn by device B is obtained, as well as the branches of the Nichomed conchoid with the sliders 11 and 13. To draw an ellipse using the xy equation or the s + cV equation, you must set the length and the slider 11 ( by the writing device) at a distance a from the hinge A. When moving the slider A along the horizontal direction 1, and the half 6 along the vertical direction 7, the writing devices in the sliders 11 and 12 draw ellipses according to equations (1) and (2) .. With this writing device in the ball nira In the perpendicular direction, the scenes 8 to the slider 5) describes the Kulp conchoid by the equation). The bottom of the drawing of the hyperbola for the xy b5-uray is necessary to set the slide 8 in parallel to the horizontal guide (axis Ox), and the slide 11 to be strengthened hinged relative to the xy-plane. As the slider 2 and slider 2 are along horizontal guide 1, and slider 6 along vertical guide 7, point B in the hinged connection of sliders 9 and 10 describes the hyperbola by equation (3). The invention of the device for drawing curves, containing a horizontal guide with a slider carrying a cross bar, a rotating ruler hinged to it, carrying adjustable slides with writing knobs and a slide connected to the ruler with a slide, and with a traverse - by means of two jointed crawlers with a writing unit, characterized in that, in order to expand the range of curves to be drawn, it has a vertical guide, a slider placed on it with a lock and a lock of the angular position of the link, set on the slider connecting the ruler and the slide, wherein the said slider and the slider are in vertical direction and are articulated. Sources of information taken into account in the examination 1, USSR Author's Certificate No. 628006, cl. B 43 L 11/00, 1976, R I. 1