CN109572286B

CN109572286B - Mathematical drawing device

Info

Publication number: CN109572286B
Application number: CN201811547103.4A
Authority: CN
Inventors: 刘景典
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-07-03
Anticipated expiration: 2038-12-17
Also published as: CN109572286A

Abstract

The invention discloses a mathematical drawing device, and relates to the technical field of mathematical drawing tools. It comprises a positioning device and a drawing device; the positioning device comprises a horizontal mounting plate; the front end and the rear end of the mounting plate are both vertically and fixedly provided with a supporting plate; the drawing device comprises a central column; a rack is arranged in each guide channel in a front-back sliding manner; a line drawing pen is arranged in the sleeve in a sliding manner up and down; a fixed point pen is arranged in the guide pipe in a vertical sliding manner; the fixed point pen and the two line drawing pens are on the same straight line; the lower part of the central column is provided with a distance-adjusting motor; a driving motor is arranged on the front side of the upper end of the mounting plate; the upper end surface of the protective shell is uniformly provided with angle lines along the ring shape; the front part of the upper end of the mounting plate is provided with a control panel and a display. The invention has the beneficial effects that: the drawing device has no center pinhole, can assist in drawing various figures, and can realize the measurement of straight line angles by using two points on a straight line.

Description

Mathematical drawing device

Technical Field

The invention relates to the technical field of mathematical drawing tools.

Background

In the mathematics subject, in teaching or study, often need carry out the drawing of plane geometry, drawing tools such as traditional set square, compasses are comparatively single, and compasses commonly used need utilize the stitch to confirm the centre of a circle when drawing, and the location is unstable, and when drawing on the paper, the stitch directly punctures and forms the pinhole, and can be bigger and bigger, causes the error, influences the use of below paper simultaneously. The drawing requirements cannot be well met by common drawing tools like an oval figure. In a mathematical graph, angle measurement generally requires a reference line, an included angle vertex and a measured straight line, errors are easy to occur when the included angle vertex is positioned, and particularly when the round points are pricked by pinholes to be larger and larger, inconvenience is brought to measurement, and paper is easy to be stained by the protractor in the use and translation process. In a general design, a processor is used for drawing, various patterns can be drawn, but the drawing is inconvenient to use, cannot be used for measurement, is inconvenient to center and is slow in single-line drawing.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a mathematical drawing instrument aiming at the technical defects. The drawing device has no center pinhole, can assist in drawing various figures, and can realize the measurement of straight line angles by using two points on a straight line.

The technical scheme adopted by the invention is as follows: providing a mathematical drawing instrument, which comprises a positioning device and a drawing device;

the positioning device comprises a horizontal mounting plate; the front end and the rear end of the mounting plate are both vertically and fixedly provided with a supporting plate; the lower end of each supporting plate is provided with a paper pressing plate in a sliding way; the upper end of the paper pressing plate is provided with a guide groove; reset rubber is fixed at the inner bottom end of the guide groove; the lower part of the supporting plate is connected with the guide groove in a sliding way, and the lower end of the supporting plate is contacted with the reset rubber; the middle part of the mounting plate is provided with a mounting hole;

the drawing device comprises a central column; a central column is rotatably arranged in the mounting hole through a bearing;

the lower end of the central column is fixed with an installation box; the mounting box is arranged below the mounting plate; the left part and the right part of the installation box are both provided with guide channels in a front-back penetrating manner; a rack is arranged in each guide channel in a front-back sliding manner; the rear end of the left rack and the front end of the right rack are respectively and fixedly provided with a vertical sleeve; elastic rubber is fixed at the upper part in the sleeve; a line drawing pen is arranged in the sleeve in a sliding manner up and down; a guide pipe is vertically fixed in the middle of the bottom end of the installation box and is coaxial with the central column; the top in the guide tube is provided with an elastic switch; a fixed point pen is arranged in the guide pipe in a vertical sliding manner; the upper end of the fixed point pen is contacted with the elastic switch; the fixed point pen and the two line drawing pens are on the same straight line;

the lower part of the central column is provided with a distance-adjusting motor; the output end of the distance adjusting motor extends downwards into the mounting box, and the lower end of the output end of the distance adjusting motor is provided with a distance adjusting gear; the distance adjusting gear is meshed and connected with the racks on the left side and the right side; the upper part of the central column is provided with a battery jar; a storage battery is arranged in the battery jar; the outer side of the upper part of the central column is sleeved with a rotating gear; a driving motor is arranged on the front side of the upper end of the mounting plate; the output end of the driving motor is provided with a driving gear; the driving gear is meshed with the rotating gear; an annular protective shell is fixedly sleeved on the outer side of the upper part of the central column, and the driving motor and the driving gear are both arranged in the protective shell; the upper end surface of the protective shell is uniformly provided with angle lines along the ring shape; the side surface of the central column is provided with an indicator in the vertical direction;

the front part of the upper end of the mounting plate is provided with a control panel and a display; a plurality of control buttons are arranged on the control panel; a processor is arranged in the control panel; the control button is electrically connected with the processor; the elastic switch is electrically connected with the processor; the control end of the processor is respectively and electrically connected with the control circuits of the distance adjusting motor and the driving motor; the signal output end of the processor is electrically connected with the display.

Further optimize this technical scheme, the press paper front end face of a mathematics picture plotter evenly is provided with the scale mark along length direction.

Further optimizing the technical scheme, the control button of the mathematical drawing device comprises but is not limited to a diameter adjusting module and an ellipse input module.

Further optimize this technical scheme, a mounting panel, nipper and backup pad of mathematical drawing ware all are transparent plastic material.

Further optimize this technical scheme, a mathematical drawing ware's treater is connected with bluetooth module.

The invention has the beneficial effects that:

1. the positioning device and the drawing device are matched for use, a circle center pinhole is not formed during drawing, shapes such as circles, ellipses, parallel lines and triangles can be drawn in an auxiliary mode, and the angle of the straight line can be measured by using two points on the straight line;

in the drawing device, a gear rack structure is arranged on an installation box, the linear distance between two drawing pens can be adjusted by utilizing a distance-adjusting rack, namely the diameter of a circle, a fixed point pen is arranged at the midpoint of the two drawing pens, the position of the circle center can be pointed out during drawing, the stitch of the traditional compasses is not needed, the fixed point pen can trigger an elastic switch, so that the drawing operation is quicker and more convenient, and the elastic switch is a trigger switch for starting drawing;

the distance adjusting motor is used for controlling and adjusting the distance between the two line drawing pens, and the driving motor is used for realizing angle rotation and driving the line drawing pens to rotate around the shaft to draw circles and other drawing actions. The pitch adjusting motor and the driving motor are matched to work simultaneously under the control of the processor, so that the ellipse drawing and the like can be realized; the two line drawing pens are two points on a straight line, the angle of inclination of the straight line formed by the two line drawing pens can be read on an angle line on the protective shell, the angle of the corresponding straight line can be measured by taking the paper pressing plate as a datum line, and round points do not need to be determined, so that the method is more convenient and accurate;

2. the scale mark on the front end face of the paper pressing plate is a length measuring scale, and can be used for measuring the length of a straight line or observing, measuring and calculating the translation distance of a line drawing pen, and drawing parallel lines and the like;

3. when drawing a circle or an ellipse, basic data needs to be confirmed and input, the input can be realized through a control panel, a control button on the control panel is a setting end, a processor is a data processing control module, an elastic switch is a trigger switch for starting drawing, a distance adjusting motor and a driving motor are response ends, and a display displays data;

4. the Bluetooth module can be conveniently connected and controlled with the mobile phone, and data input is more convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a left side view structure according to the present invention;

FIG. 3 is a schematic view of the split structure of the present invention;

FIG. 4 is an exploded view of the drawing apparatus of the present invention;

FIG. 5 is an exploded view of a portion of the drawing apparatus of the present invention;

FIG. 6 is a block diagram of the logic circuit of the present invention;

in the figure, 1, mounting plate; 2. a support plate; 3. pressing a paper board; 4. a guide groove; 5. resetting the rubber; 6. mounting holes; 7. a central column; 8. installing a box; 9. a guide channel; 10. a rack; 11. a sleeve; 12. an elastic rubber; 13. a line drawing pen; 14. a guide tube; 15. an elastic switch; 16. a fixed point pen; 17. a distance-adjusting motor; 18. a pitch adjusting gear; 19. a battery case; 20. a storage battery; 21. a rotating gear; 22. a drive motor; 23. a drive gear; 24. a protective shell; 25. an angle line; 26. an indicator mark; 27. a control panel; 28. a display; 29. a control button; 30. scale lines are marked.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-6, a mathematical mapper includes a positioning device and a mapping device;

the positioning device comprises a horizontal mounting plate 1; the front end and the rear end of the mounting plate 1 are vertically and fixedly provided with supporting plates 2; the lower end of each supporting plate 2 is provided with a paper pressing plate 3 in a sliding way; the upper end of the paper pressing plate 3 is provided with a guide groove 4; the inner bottom end of the guide groove 4 is fixed with a reset rubber 5; the lower part of the supporting plate 2 is connected with the guide groove 4 in a sliding way, and the lower end of the supporting plate 2 is contacted with the reset rubber 5; the middle part of the mounting plate 1 is provided with a mounting hole 6; the drawing device comprises a central column 7; a central column 7 is rotatably arranged in the mounting hole 6 through a bearing; the lower end of the central column 7 is fixed with a mounting box 8; the mounting box 8 is arranged below the mounting plate 1; the left part and the right part of the installation box 8 are both provided with guide channels 9 in a front-back penetrating manner; a rack 10 is arranged in each guide channel 9 in a front-back sliding manner; the rear end of the left rack 10 and the front end of the right rack 10 are respectively fixedly provided with a vertical sleeve 11; the inner upper part of the sleeve 11 is fixed with elastic rubber 12; a line drawing pen 13 is installed in the sleeve 11 in a vertically sliding mode; a guide pipe 14 is vertically fixed in the middle of the bottom end of the installation box 8, and the guide pipe 14 is coaxial with the central column 7; an elastic switch 15 is arranged at the top in the guide tube 14; a fixed point pen 16 is arranged in the guide tube 14 in a vertical sliding manner; the upper end of the fixed point pen 16 is contacted with the elastic switch 15; the fixed point pen 16 and the two line drawing pens 13 are on the same straight line; the lower part of the central column 7 is provided with a distance adjusting motor 17; the output end of the distance adjusting motor 17 extends downwards into the mounting box 8, and the lower end of the output end of the distance adjusting motor 17 is provided with a distance adjusting gear 18; the distance adjusting gear 18 is meshed with the racks 10 on the left side and the right side; the upper part of the central post 7 is provided with a battery groove 19; a storage battery 20 is arranged in the battery groove 19; the outer side of the upper part of the central column 7 is sleeved with a rotating gear 21; a driving motor 22 is arranged on the front side of the upper end of the mounting plate 1; the output end of the driving motor 22 is provided with a driving gear 23; the driving gear 23 is meshed with the rotating gear 21; an annular protective shell 24 is fixedly sleeved on the outer side of the upper part of the central column 7, and the driving motor 22 and the driving gear 23 are both arranged in the protective shell 24; the upper end surface of the protective shell 24 is uniformly provided with angle lines 25 along the ring shape; the side surface of the central column 7 is provided with a vertical indicator 26; the front part of the upper end of the mounting plate 1 is provided with a control panel 27 and a display 28; a plurality of control buttons 29 are provided on the control panel 27; a processor is arranged in the control panel 27; control buttons 29 are electrically connected to the processor; the elastic switch 15 is electrically connected with the processor; the control end of the processor is respectively and electrically connected with the control circuits of the distance adjusting motor 17 and the driving motor 22; the signal output end of the processor is electrically connected with the display 28; the front end face of the paper pressing plate 3 is uniformly provided with scale marks 30 along the length direction; control buttons 29 include, but are not limited to, a diameter adjustment module and an elliptical input module; the mounting plate 1, the paper pressing plate 3 and the supporting plate 2 are all made of transparent plastic materials; the processor is connected with a Bluetooth module.

The central column 7 is provided with the battery groove 19, the battery 20 is arranged in the central column to supply power to the whole circuit, the use is convenient, and the solar battery can be suitable for different sizes of products according to different use scenes. The pitch-adjusting motor 17 and the driving motor 22 in the invention both need linear control, and can adopt servo motors so as to facilitate data control and data feedback, and accurately adjust and control the diameter, the rotation angle and the like. The invention is similar to the action of stamping when drawing, the pen point of the fixed point pen 16 is lower than the pen point of the line drawing pen 13, and drawing is not carried out when the pen point is lightly placed on paper, at the moment, the paper pressing plate 3 presses paper, so that a drawing area can be positioned and leveled better, but the reset rubber 5 plays a role of supporting the supporting plate 2 upwards by virtue of the elasticity of the reset rubber 5, so that the fixed point pen 16 is in contact with the paper, and the line drawing pen 13 is not in contact with the paper, the setting is convenient to adjust in the using process, when the mounting plate 1 is pressed down, the supporting plate 2 presses down the reset rubber 5, the line drawing pen 13 descends to be in contact with the paper, meanwhile, the elastic switch 15 is pressed at the upper end of the fixed point pen 16, the elastic switch 15 is pressed to be electrified, the processor controls to start drawing, the line drawing pen 13 rotates to draw, and when the pressing force is.

When the invention is used for drawing a circle, the control panel 27 is used for controlling the rotation of the distance adjusting motor 17, the linear distance of the two line drawing pens 13 is adjusted and controlled, namely the diameter of a set circle is placed in a drawing area, so that the fixed point pen 16 is pressed on the center of the circle (if the center of the circle is not fixed, the position where the fixed point pen 16 is pressed downwards is the circle center, but the circle center is different from the hole pricking of the traditional compasses), the fixed point pen 16 is pressed downwards, the fixed point pen 16 triggers the elastic switch 15, the processor controls the driving motor 22 to rotate, the line drawing pens 13 start to draw a circle around the fixed point pen 16 according to the setting, and the device is lifted after the circle. If concentric circles need to be drawn, the pressure is released but the concentric circles do not need to be lifted, the mounting plate 1 is lifted under the elastic support of the reset rubber 5, the fixed point pen 16 is still in the circle center position, the diameter data is reset, and the fixed point pen is pressed down again after the adjustment is completed to trigger the elastic switch 15 to draw circles.

When drawing an ellipse, the control panel 27 is used to set the major axis data and the minor axis data of the ellipse, according to the parameter equation formula of the ellipse, x is acos θ, y is bsin θ, a is half of the major axis length, b is half of the minor axis length, it is only necessary to set the values of a and b, and the initial distance between the two drawing pens 13 can be used as one of the values 2a or 2b, that is, the motor of the pitch-adjusting motor 17 performs initial control, so that the other value is input. The points on the ellipse can be defined by the distance to the dots and the included angle, therefore, the driving motor 22 controls the rotation angle to be the included angle (prompting that the rotation adjustment control of the included angle can be used for measuring the inclination angle of the straight line), the distance adjusting motor 17 controls the distance to be the distance from the points on the ellipse to the dots, and the ellipse can be drawn by the cooperation of the two. After the setting is finished, the pointing pen 16 is aligned with the center of a circle, the elastic switch 15 is pressed down to be opened, and the driving motor 22 and the distance adjusting motor 17 are matched to draw an ellipse under the processing control. Similarly, other mathematical parameter patterns may be drawn under the control of the processor.

When making angle measurements of straight lines. When the straight line where the line drawing pen 13 and the pointing pen 16 are located is regarded as an actual straight line, the driving motor 22 controls the straight line to rotate around the angle of the midpoint, the line where the sideline of the paper pressing plate is located is taken as a reference line, the angle of the straight line where the line drawing pen 13 is located is controllable, and the straight line can be read by the angle line 25 corresponding to the indicator 26 on the central column 7. According to the principle, the sidelines of the paper pressing plate are attached to the datum lines of the measured straight lines, the included angle vertexes or dots and the like do not need to be found, the fixed point pen 16 only needs to be adjusted and placed at any position on the measured straight lines, the central column 7 is rotated to drive the line drawing pen 13 to rotate, when the line drawing pen 13 falls on the measured straight lines, the angle can be read from the angle line 25 on the protective shell 24.

According to the angle principle, the invention can assist the fixed-point drawing of parallel lines, parallelograms, triangles (for angle fixed-point, the straight line of the line drawing pen 13 is a bevel edge, the side length can be the distance between the line drawing pens 13, and then the line drawing pen is connected with a point) and the like with angle requirements. When drawing the parallel line related graph, after setting the distance of the line drawing pen 13, the translation drawing device can be used, the paper pressing plate is the reference of translation, simultaneously, the scale marks 30 are arranged on the paper pressing plate, and the translation distance can be directly measured through the boundary indication of the supporting plate 2.

When drawing circles, ellipses and measuring straight line angles, only one line drawing pen 13 can be installed, when obvious errors occur in matching, the error of a closed figure is easily enlarged due to the increase of the number of the line drawing pens 13, a single line drawing pen 13 can be adopted, and if the error is guaranteed to be very small all the time by material technology, no influence is caused. When drawing a figure such as a parallel line or a parallelogram, the pointing pen 16 may be removed or only one drawing pen 13 may be attached. The sliding installation of the line drawing pen 13, the pointing pen 16, the supporting plate 2 and the like in the invention requires very small matching errors in the horizontal direction.

In the present invention, the display 28 is connected to the processor for displaying a plurality of controllable and measurable data, corresponding to actual use, without any interpretation limitation, such as displaying the distance between two line drawing pens 13. Meanwhile, the control buttons 29 on the control panel 27 correspond to functions required, and are correspondingly arranged according to the functions, and the specific structural form can be selected according to the requirements. For example, a diameter adjusting module is arranged, namely the diameter adjusting module controls the work of the distance adjusting motor 17 and adjusts the linear distance between the two line drawing pens 13; the ellipse input module is used for setting parameters when drawing an ellipse, namely setting a numerical value or a numerical value b; the conventional specific control state can be in various forms, such as setting an addition and subtraction button, a knob or direct numerical value input and the like; whether the elastic switch 15 draws a circle or an ellipse when being turned on can be distinguished by setting a selection button, and can also be set through logic, for example, if the ellipse input module is not input or the numerical value is the same as that of the diameter adjusting module, the circle is drawn, otherwise, the ellipse is drawn. The specific form of the control buttons 29 is not a detailed illustration of the invention and can be routinely selected by those skilled in the art based on functional requirements, operational procedures, control habits, etc. Set up bluetooth module joinable cell-phone simultaneously to control through cell-phone APP, then reducible control button 29, and more logic control can appear.

Claims

1. A mathematical plotter characterized in that: comprises a positioning device and a drawing device;

the positioning device comprises a horizontal mounting plate (1); the front end and the rear end of the mounting plate (1) are vertically and fixedly provided with a supporting plate (2); the lower end of each supporting plate (2) is provided with a paper pressing plate (3) in a sliding way; the upper end of the paper pressing plate (3) is provided with a guide groove (4); the inner bottom end of the guide groove (4) is fixed with a reset rubber (5); the lower part of the support plate (2) is connected with the guide groove (4) in a sliding way, and the lower end of the support plate (2) is contacted with the reset rubber (5); the middle part of the mounting plate (1) is provided with a mounting hole (6);

the drawing device comprises a central column (7); a central column (7) is rotatably arranged in the mounting hole (6) through a bearing;

the lower end of the central column (7) is fixed with a mounting box (8); the mounting box (8) is arranged below the mounting plate (1); the left part and the right part of the installation box (8) are provided with guide channels (9) in a front-back penetrating manner; a rack (10) is arranged in each guide channel (9) in a front-back sliding manner; the rear end of the left rack (10) and the front end of the right rack (10) are respectively fixedly provided with a vertical sleeve (11); an elastic rubber (12) is fixed at the inner upper part of the sleeve (11); a line drawing pen (13) is arranged in the sleeve (11) in a sliding manner up and down; a guide pipe (14) is vertically fixed in the middle of the bottom end of the installation box (8), and the guide pipe (14) is coaxial with the central column (7); an elastic switch (15) is arranged at the top in the guide tube (14); a fixed point pen (16) is arranged in the guide tube (14) in a vertical sliding manner; the upper end of the fixed point pen (16) is contacted with the elastic switch (15); the fixed point pen (16) and the two line drawing pens (13) are on the same straight line;

the lower part of the central column (7) is provided with a distance adjusting motor (17); the output end of the distance adjusting motor (17) extends downwards into the mounting box (8), and the lower end of the output end of the distance adjusting motor (17) is provided with a distance adjusting gear (18); the distance adjusting gear (18) is meshed and connected with the racks (10) on the left side and the right side; the upper part of the central column (7) is provided with a battery groove (19); a storage battery (20) is arranged in the battery tank (19); the outer side of the upper part of the central column (7) is sleeved with a rotating gear (21); a driving motor (22) is arranged on the front side of the upper end of the mounting plate (1); the output end of the driving motor (22) is provided with a driving gear (23); the driving gear (23) is meshed with the rotating gear (21); an annular protective shell (24) is fixedly sleeved on the outer side of the upper part of the central column (7), and the driving motor (22) and the driving gear (23) are both arranged in the protective shell (24); the upper end surface of the protective shell (24) is uniformly provided with angle lines (25) along the ring shape; the side surface of the central column (7) is provided with an indicator (26) in the vertical direction;

the front part of the upper end of the mounting plate (1) is provided with a control panel (27) and a display (28); a plurality of control buttons (29) are arranged on the control panel (27); a processor is arranged in the control panel (27); the control button (29) is electrically connected with the processor; the elastic switch (15) is electrically connected with the processor; the control end of the processor is respectively and electrically connected with the control circuits of the distance adjusting motor (17) and the driving motor (22); the signal output of the processor is electrically connected to a display (28).

2. A mathematical mapper in accordance with claim 1, wherein: the front end face of the paper pressing plate (3) is uniformly provided with scale marks (30) along the length direction.

3. A mathematical mapper in accordance with claim 1, wherein: the control buttons (29) include, but are not limited to, a diameter adjustment module and an elliptical input module.

4. A mathematical mapper in accordance with claim 1, wherein: the mounting plate (1), the paper pressing plate (3) and the support plate (2) are all made of transparent plastic materials.

5. A mathematical mapper in accordance with claim 1, wherein: the processor is connected with a Bluetooth module.