CN111497502A - A mathematical ellipse drawing tool - Google Patents

Abstract

The invention discloses a mathematical ellipse drawing tool, comprising a bracket, a bracket pulley, a bracket ring, a turntable, a sleeve, a telescopic rod, a spring seat, a spring, a movable pulley, and a rope. A support pulley is provided, the turntable is rotatably connected with the middle of the support ring, the sleeve is fixedly arranged on the upper end face of the turntable, the telescopic rod passes through the sleeve and can move, the spring is a tension spring, and the spring seat is fixedly arranged at one end of the telescopic rod. One end is fixedly connected with one end of the sleeve, the other end of the spring is fixedly connected with the spring seat, the other end of the telescopic rod is provided with a movable pulley, the tether is annular, and the tether is sleeved between the two bracket pulleys and the movable pulley, and the middle of the movable pulley is connected. Hole, the through hole goes through the tip of the brush. The invention does not need to draw auxiliary lines, can draw an ellipse at one time, and can draw ellipses of different sizes by changing the length of the rope, which is convenient and quick to use and has the value of popularization and application.

Description

A mathematical ellipse drawing tool

technical field

The invention relates to a mathematical drawing tool, in particular to a mathematical ellipse drawing tool.

Background technique

Mathematics is a discipline that studies concepts such as quantity, structure, change, space, and information. From a certain perspective, it is a kind of formal science. Mathematicians and philosophers have a range of views on the exact scope and definition of mathematics. In the prior art, drawing is performed during mathematics learning, and most drawing tools are used to draw straight lines, arcs, etc., but the drawing of ellipses is troublesome, and it is necessary to use compasses to draw multiple auxiliary circles and auxiliary lines to draw ellipses. Therefore, there is room for improvement.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a mathematical ellipse drawing tool in order to solve the above problem.

The present invention realizes above-mentioned purpose through following technical scheme:

The invention includes a bracket, a bracket pulley, a bracket ring, a turntable, a sleeve, a telescopic rod, a spring seat, a spring, a movable pulley, and a tether, the bracket ring is fixedly arranged in the middle of the bracket, and the A bracket pulley, the turntable is rotatably connected with the middle part of the bracket ring, the sleeve is fixedly arranged on the upper end surface of the turntable, the telescopic rod passes through the sleeve and can move, and the spring is Tension spring, the spring seat is fixedly arranged on one end of the telescopic rod, one end of the spring is fixedly connected with one end of the sleeve, the other end of the spring is fixedly connected with the spring seat, the telescopic rod is fixedly connected The other end is provided with the movable pulley, the tether is annular, the tether is sleeved between the two bracket pulleys and the movable pulley, the middle of the movable pulley is a through hole, and the through hole passes through the paintbrush. nib.

Preferably, a bearing is provided between the turntable and the support ring.

The beneficial effects of the present invention are:

The present invention is a mathematical ellipse drawing tool. Compared with the prior art, the present invention does not need to draw auxiliary lines, can draw an ellipse at one time, and can draw ellipses of different sizes by changing the length of the rope, which is convenient and fast to use. , has the value of promotion and application.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

In the picture: 1- bracket, 2- bracket pulley, 3- bracket ring, 4- turntable, 5- sleeve, 6- telescopic rod, 7- spring seat, 8- spring, 9- movable pulley, 10- rope.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings:

As shown in Figure 1: the present invention includes a bracket 1, a bracket pulley 2, a bracket ring 3, a turntable 4, a sleeve 5, a telescopic rod 6, a spring seat 7, a spring 8, a movable pulley 9, and a rope 10. The support ring 3 is fixed in the middle, the support pulleys 2 are set at both ends of the support 1, the turntable 4 is rotatably connected with the middle of the support ring 3, and the sleeve 5 is fixed on the turntable 4 The upper end surface of the telescopic rod 6 passes through the sleeve 5 and can move, the spring 8 is a tension spring, the spring seat 7 is fixedly arranged on one end of the telescopic rod 6, and one end of the spring 8 It is fixedly connected to one end of the sleeve 5, the other end of the spring 8 is fixedly connected to the spring seat 7, the other end of the telescopic rod 6 is provided with the movable pulley 9, and the rope 10 is annular, so The lanyard 10 is fitted between the two bracket pulleys 2 and the movable pulley 9 , the middle of the movable pulley 9 is a through hole, and the through hole passes through the tip of the paintbrush.

Preferably, a bearing is provided between the turntable 4 and the support ring 3 .

As an improvement, the length of the bracket can be adjusted.

The working principle of the present invention is as follows:

By inserting a drawing pen in the middle of the movable pulley 9, due to the action of the spring, the telescopic rod 6 tightens the rope 10, and an elliptical handwriting is formed with the rotation of the telescopic rod. If ellipses of different sizes are drawn, the length of the rope can be changed by changing the length of the rope. , the length of the bracket to draw ellipses of different sizes.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

1. A mathematical ellipse drawing tool, comprising: comprises a bracket, a bracket pulley, a bracket ring, a turntable, a sleeve, a telescopic rod, a spring seat, a spring, a movable pulley and a loop rope, the middle part of the bracket is fixedly provided with the bracket ring, the two ends of the bracket are provided with the bracket pulleys, the turntable is rotationally connected with the middle part of the bracket ring, the sleeve is fixedly arranged on the upper end surface of the turntable, the telescopic rod penetrates through the sleeve and can move, the spring is a tension spring, the spring seat is fixedly arranged at one end of the telescopic rod, one end of the spring is fixedly connected with one end of the sleeve, the other end of the spring is fixedly connected with the spring seat, the other end of the telescopic rod is provided with the movable pulley, the sleeve rope is annular, the sleeve rope is sleeved between the two support pulleys and the movable pulley, the middle of the movable pulley is provided with a through hole, and the through hole penetrates through a pen point of the painting brush.

2. The mathematical ellipsometry rendering tool of claim 1, wherein: and a bearing is arranged between the turntable and the support ring.

3. The mathematical ellipsometry rendering tool of claim 1, wherein: the length of the bracket can be adjusted.

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