CN114228374A - Convenient drawing device for mathematical teaching and use method thereof - Google Patents
Convenient drawing device for mathematical teaching and use method thereof Download PDFInfo
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- CN114228374A CN114228374A CN202210062911.1A CN202210062911A CN114228374A CN 114228374 A CN114228374 A CN 114228374A CN 202210062911 A CN202210062911 A CN 202210062911A CN 114228374 A CN114228374 A CN 114228374A
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- 230000009471 action Effects 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
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- 238000005096 rolling process Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
- G01B3/563—Protractors
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Abstract
The invention discloses a convenient drawing device for mathematical teaching and a using method thereof, wherein the convenient drawing device comprises a plotter main body, an extension component, an angle drawing component and a circular drawing component, wherein the extension component is fixed on the inner wall of one side of the plotter main body; the extension assembly comprises an accommodating groove, a sliding groove, a rotating wheel, a first rotating shaft, a first rotating plate, a first spring, an angle measuring ruler, a connecting plate, a first sliding block and a second spring, wherein the accommodating groove is formed in the inner wall of one side of the plotter main body; the portable measuring device can be stored without occupying external space, so that the portable measuring device is convenient to carry and improves the carrying effect; can carry out the angle drawing in blackboard department, increase the drawing structure, and reduce and draw by oneself, improve the accurate nature of drawing like this to drawing effect has been improved.
Description
Technical Field
The invention belongs to the technical field of mathematical teaching, and particularly relates to a convenient drawing device for mathematical teaching and a using method thereof.
Background
The number is a subject for researching the concepts of quantity, structure, change, space, information and the like, mathematics is a general means for strictly describing the abstract structure and mode of things by human beings, can be applied to any problem in the real world, all mathematical objects are artificially defined in nature, and drawing tools are needed for drawing when the mathematics is taught.
But current convenient drawing device does not generally have the structure of accomodating, leads to structures such as caliber to be in the outside usually, leads to carrying convenient inadequately, has reduced the carrying effect, does not generally have the angle and draws moreover, leads to drawing single structure, needs artifical drawing angle, leads to the angle drawing accurate inadequately, has reduced the drawing effect of angle, does not generally have circular drawing moreover, leads to needing the manual work to draw the circle, makes circular drawing generally like this, has reduced the drawing effect.
Disclosure of Invention
The invention aims to provide a convenient drawing device for mathematical education and a using method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a convenient drawing device for mathematical education comprises a plotter main body, an extension component, an angle drawing component and a circular drawing component, wherein the extension component is fixed on the inner wall of one side of the plotter main body;
the drawing device comprises an extension assembly, a drawing device body and a drawing device, wherein the extension assembly comprises an accommodating groove, a sliding groove, a rotating wheel, a first rotating shaft, a first rotating plate, a first spring, a measuring angle square, a connecting plate, a first sliding block and a second spring, the accommodating groove is formed in the inner wall of one side of the drawing device body, the connecting plate is symmetrically installed on the inner wall of one side of the accommodating groove, the first sliding block is fixedly connected to the outer walls of the two sides of the connecting plate in a plastic connection mode, the sliding groove is formed in the inner wall of the two sides of the accommodating groove corresponding to the first sliding block, the measuring angle square is fixedly connected to the outer wall of one side of the connecting plate in a plastic connection mode, the second spring is fixedly connected to the outer wall between the connecting plates in a symmetrical connection mode, the rotating wheel is installed on the outer wall between the connecting plates, the first rotating shaft is fixedly connected to the outer wall of the top end of the rotating wheel, the first rotating plate is fixedly connected to the outer wall of the top end of the first rotating shaft in a plastic connection mode, and the outer wall of the bottom end of the first rotating plate is fixedly connected with a first spring, and the bottom end of the first spring is fixedly connected to the outer wall of the plotter main body.
As a still further scheme of the invention: the angle drawing subassembly includes ear piece, second pivot, rotation chi, connecting hole, guide rail, nut, screw and twists the head, the symmetry is moulded on one side outer wall of plotter main part and is connect and be fixed with the ear piece, install the rotation chi on the outer wall between the ear piece, equal fixedly connected with second pivot on the both sides outer wall of rotation chi, and the other end of second pivot rotates and connects on the inner wall of ear piece, the connecting hole has been seted up on the inner wall of one side of rotation chi, the screw has been cup jointed on one side inner wall of connecting hole, it connects fixedly to have the guide rail to correspond the screw to mould on one side outer wall of plotter main part, threaded connection has the nut on the bottom outer wall of screw, welded fastening has the head of twisting on the top outer wall of screw.
As a still further scheme of the invention: circular drawing subassembly includes third pivot, magnetic chuck, slide rail, guiding hole, threaded rod, second rotor plate, second slider, screw hole and chalk standing groove, it is connected with the third pivot to rotate on the bottom inner wall of plotter main part, fixedly connected with magnetic chuck on the bottom outer wall of third pivot, the plotter main part is located and moulds on the outer wall of magnetic chuck one side and connect and be fixed with the slide rail, it is connected with the threaded rod to rotate on one side inner wall of slide rail, the guiding hole has been seted up to corresponding the threaded rod on one side inner wall of slide rail, fixedly connected with second rotor plate on the one end outer wall of threaded rod, sliding connection has the second slider on the bottom inner wall of slide rail, correspond the threaded rod on one side inner wall of second slider and seted up the screw hole, the chalk standing groove has been seted up on the bottom inner wall of second slider.
As a still further scheme of the invention: and a handle is fixed on the outer wall of the top end of the plotter main body in a plastic connection mode.
As a still further scheme of the invention: the shape of the rotating wheel is oval.
As a still further scheme of the invention: the inner wall of one side of the first spring is sleeved on the outer wall of the first rotating shaft, and the first spring is a torsion spring.
As a still further scheme of the invention: the guide rail is arc-shaped.
As a still further scheme of the invention: a method for using a convenient drawing device for mathematical education includes moving a main body of a drawing device to a position to be measured by a handle when a protractor is needed, rotating a first rotating plate to enable a rotating wheel on a first rotating shaft to rotate ninety degrees along a containing groove, enabling a protruding portion of the rotating wheel to extrude a connecting plate, enabling a first sliding block on the connecting plate to move along a sliding groove, enabling the protractor to stretch out of the containing groove, loosening the first rotating plate after measurement is finished, enabling the rotating wheel on the first rotating shaft to reset under the action of a first spring, enabling the protractor to be contained in the containing groove again under the action of a second spring, rotating a screw in a connecting hole through a screw head when angle drawing is needed, loosening the screw and a nut, and enabling the rotating ruler to rotate along a second rotating shaft on an ear block, and rotate the assigned position through the scale on the guide rail, reverse twisting moves the head of twisting this moment, retighten screw and nut, thereby fix the rolling ruler, then blackboard department carries out the angle drawing again, when needs circular drawing, rotate the threaded rod along the guiding hole in the slide rail through the second rolling plate, then under the effect through the screw hole, make the second slider remove the assigned position along the slide rail, then place the chalk at the chalk standing groove, place the magnetic chuck on the blackboard this moment, and adsorb the blackboard, then make the plotter main part rotate a week along the third pivot through the handle, then draw circularly on the blackboard through the chalk on the chalk standing groove.
The beneficial effect of this hair is:
1. when the angle measuring ruler is needed, the plotter main body is moved to a position needing to be measured through the handle, then the first rotating plate is rotated to enable the rotating wheel on the first rotating shaft to rotate ninety degrees along the accommodating groove, so that the protruding part of the rotating wheel extrudes the connecting plate, and further the first sliding block on the connecting plate moves along the sliding groove, and therefore the angle measuring ruler extends out of the accommodating groove, the measuring device can be accommodated, external space does not need to be occupied, the carrying is convenient, and the carrying effect is improved;
2. the screw in the connecting hole is rotated through the screwing head so as to be loosened with the nut, then the rotating ruler is rotated along the second rotating shaft on the ear block and is rotated to a specified position through scales on the guide rail, the screwing head is reversely screwed at the moment, and the screw and the nut are screwed again, so that the rotating ruler is fixed, angle drawing can be performed at a blackboard, a drawing structure is increased, self-drawing is reduced, the drawing accuracy is improved, and the drawing effect is improved;
3. rotate the threaded rod along the guiding hole in the slide rail through the second rotor plate, then under the effect through the screw hole, make the second slider remove the assigned position along the slide rail, then place the chalk at the chalk standing groove, place the magnetic chuck on the blackboard this moment, and adsorb the blackboard, then make the plotter main part rotate a week along the third pivot through the handle, can carry out the drawing circle in blackboard department, need not the hand drawing circle, the circular shape is drawn so has been improved, and then drawing effect has been improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic view of the present invention in a cutaway top view;
FIG. 3 is a front view cut-away schematic of the present invention;
FIG. 4 is an enlarged view of the area A of FIG. 3 of the clamping assembly of the present invention;
FIG. 5 is a schematic bottom perspective view of the present invention;
in the figure: 1. a plotter main body; 2. an extension assembly; 3. an angle drawing component; 4. a circular drawing assembly; 5. a handle; 201. a receiving groove; 202. a chute; 203. a rotating wheel; 204. a first rotating shaft; 205. a first rotating plate; 206. a first spring; 207. an angle measuring ruler; 208. a connecting plate; 209. a first slider; 2010. a second spring; 301. an ear piece; 302. a second rotating shaft; 303. rotating the ruler; 304. connecting holes; 305. a guide rail; 306. a nut; 307. a screw; 308. screwing the head; 401. a third rotating shaft; 402. a magnetic chuck; 403. a slide rail; 404. a guide hole; 405. a threaded rod; 406. a second rotating plate; 407. a second slider; 408. a threaded hole; 409. and a chalk placing groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-2, the present invention provides a technical solution: a convenient drawing device for mathematical education comprises a plotter main body 1, an extension component 2, an angle drawing component 3 and a circular drawing component 4, wherein the extension component 2 is fixed on the inner wall of one side of the plotter main body 1, the angle drawing component 3 is fixed on the outer wall of one side of the plotter main body 1, and the circular drawing component 4 is fixed on the outer wall of the bottom end of the plotter main body 1; the outer wall of the top end of the plotter main body 1 is fixedly connected with the handle 5 in a plastic mode, and the plotter main body 1 is taken to a specified position through the handle 5, so that the transfer effect is improved;
the extension component 2 comprises a receiving groove 201, a sliding groove 202, a rotating wheel 203, a first rotating shaft 204, a first rotating plate 205, a first spring 206, a protractor 207, a connecting plate 208, a first sliding block 209 and a second spring 2010, wherein the receiving groove 201 is arranged on the inner wall of one side of the plotter main body 1, the connecting plate 208 is symmetrically arranged on the inner wall of one side of the receiving groove 201, the first sliding block 209 is fixed on the outer wall of two sides of the connecting plate 208 in a plastic mode, the sliding groove 202 is arranged on the inner wall of two sides of the receiving groove 201 corresponding to the first sliding block 209, the protractor 207 is fixed on the outer wall of one side of the connecting plate 208 in a plastic mode, the second spring 2010 is fixedly connected on the outer wall between the connecting plates 208, the rotating wheel 203 is arranged on the outer wall of the top end of the rotating wheel 203, one side of the first rotating shaft 204 is rotatably connected on the inner wall of the receiving groove 201, the first rotating plate 205 is fixed on the outer wall of the top end of the first rotating shaft 204 in a plastic mode, a first spring 206 is fixedly connected to the outer wall of the bottom end of the first rotating plate 205, and the bottom end of the first spring 206 is fixedly connected to the outer wall of the plotter main body 1; the shape of the rotating wheel 203 is oval, so that the protruding part of the rotating wheel 203 extrudes the connecting plate 208, and the first sliding block 209 on the connecting plate 208 moves along the sliding groove 202, thereby improving the stretching effect; one side inner wall of the first spring 206 is sleeved on the outer wall of the first rotating shaft 204, and the first spring 206 is a torsion spring, so that the rotating wheel 203 on the first rotating shaft 204 is reset under the action of the first spring 206 by loosening the first rotating plate 205.
The working principle is as follows: when the protractor 207 is needed, the plotter main body 1 is moved to a position to be measured through the handle 5, then the first rotating plate 205 is rotated to enable the rotating wheel 203 on the first rotating shaft 204 to rotate ninety degrees along the accommodating groove 201, so that the protruding part of the rotating wheel 203 extrudes the connecting plate 208, and further the first sliding block 209 on the connecting plate 208 moves along the sliding groove 202, so that the protractor 207 extends out from the inside of the accommodating groove 201, after the measurement is finished, the first rotating plate 205 is loosened, the rotating wheel 203 on the first rotating shaft 204 is reset under the action of the first spring 206, at the moment, under the action of the second spring 2010, the protractor 207 is accommodated in the accommodating groove 201 again, the protractor 207 can be accommodated, the protractor 207 does not need to occupy the external space, and therefore the plotter is convenient to carry, and the carrying effect is improved.
Example two
Referring to fig. 3-4, the angle drawing assembly 3 includes an ear block 301, a second rotating shaft 302, a rotating ruler 303, a connecting hole 304, a guide rail 305, a nut 306, a screw 307 and a screw head 308, the ear block 301 is symmetrically and fixedly molded on an outer wall of one side of the drawing instrument body 1, the rotating ruler 303 is installed on an outer wall between the ear blocks 301, the second rotating shaft 302 is fixedly connected to outer walls of two sides of the rotating ruler 303, the other end of the second rotating shaft 302 is rotatably connected to an inner wall of the ear block 301, the connecting hole 304 is formed on an inner wall of one side of the rotating ruler 303, the screw 307 is sleeved on an inner wall of one side of the connecting hole 304, the guide rail 305 is fixedly molded on an outer wall of one side of the drawing instrument body 1 corresponding to the screw 307, the nut 306 is threadedly connected to an outer wall of a bottom end of the screw 307, and the screw head 308 is fixedly welded to an outer wall of a top end of the screw 307; the guide rail 305 is arc-shaped, and the scale on the guide rail 305 is rotated to a designated position, so that the rotary ruler 303 can be conveniently rotated to the designated position.
When needing the angle drawing, rotate the inside screw 307 of connecting hole 304 through twisting head 308, thereby loosen with nut 306, then make the rotating ruler 303 rotate along second pivot 302 on the ear piece 301, and rotate the assigned position through the scale on the guide rail 305, reverse twist is moved and is twisted head 308 this moment, retighten screw 307 and nut 306, thereby fix rotating ruler 303, then blackboard department carries out the angle drawing again, can carry out the angle drawing in blackboard department, increase the drawing structure, and reduce self-drawing, the precision of drawing has been improved like this, thereby drawing effect has been improved.
EXAMPLE III
Referring to fig. 5, the circular drawing assembly 4 includes a third shaft 401, a magnetic chuck 402, a slide rail 403, and a guide hole 404, threaded rod 405, second rotor plate 406, second slider 407, screw hole 408 and chalk standing groove 409, it is connected with third pivot 401 to rotate on the bottom inner wall of plotter main part 1, fixedly connected with magnetic chuck 402 on the bottom outer wall of third pivot 401, plotter main part 1 is located and moulds on the outer wall of magnetic chuck 402 one side and connects and be fixed with slide rail 403, it is connected with threaded rod 405 to rotate on one side inner wall of slide rail 403, guiding hole 404 has been seted up to corresponding threaded rod 405 on one side inner wall of slide rail 403, fixedly connected with second rotor plate 406 on one end outer wall of threaded rod 405, sliding connection has second slider 407 on the bottom inner wall of slide rail 403, screw hole 408 has been seted up to corresponding threaded rod 405 on one side inner wall of second slider 407, chalk standing groove 409 has been seted up on the bottom inner wall of second slider 407.
When the circular drawing is needed, the threaded rod 405 is rotated along the guide hole 404 in the slide rail 403 through the second rotating plate 406, then under the effect of the threaded hole 408, the second sliding block 407 is moved to the designated position along the slide rail 403, then the chalk is placed in the chalk placing groove 409, the magnetic suction disc 402 is placed on the blackboard at the moment, and the blackboard is adsorbed, then the plotter main body 1 is rotated for a circle along the third rotating shaft 401 through the handle 5, then the circle is drawn on the blackboard through the chalk on the chalk placing groove 409, the circle can be drawn at the blackboard, the circle is drawn without hands, the circular drawing is improved, and the drawing effect is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A convenient drawing device for mathematical education, includes plotter main part (1), extends subassembly (2), angle drawing subassembly (3) and circular drawing subassembly (4), its characterized in that: an extension component (2) is fixed on the inner wall of one side of the plotter main body (1), an angle drawing component (3) is fixed on the outer wall of one side of the plotter main body (1), and a circular drawing component (4) is fixed on the outer wall of the bottom end of the plotter main body (1);
the stretching assembly (2) comprises a containing groove (201), a sliding groove (202), a rotating wheel (203), a first rotating shaft (204), a first rotating plate (205), a first spring (206), a protractor (207), a connecting plate (208), a first sliding block (209) and a second spring (2010), wherein the containing groove (201) is formed in the inner wall of one side of the plotter main body (1), the connecting plate (208) is symmetrically installed on the inner wall of one side of the containing groove (201), the first sliding block (209) is fixed on the outer walls of the two sides of the connecting plate (208) in a plastic connection mode, the sliding groove (202) is formed in the inner wall of the two sides of the containing groove (201) corresponding to the first sliding block (209), the protractor (207) is fixed on the outer wall of one side of the connecting plate (208) in a plastic connection mode, the second spring (2010) is symmetrically and fixedly connected to the outer wall between the connecting plates (208), and the rotating wheel (203) is installed on the outer wall between the connecting plates (208), the drawing instrument is characterized in that a first rotating shaft (204) is fixedly connected to the outer wall of the top end of the rotating wheel (203), one side of the first rotating shaft (204) is rotatably connected to the inner wall of the accommodating groove (201), a first rotating plate (205) is fixedly connected to the outer wall of the top end of the first rotating shaft (204) in a plastic joint mode, a first spring (206) is fixedly connected to the outer wall of the bottom end of the first rotating plate (205), and the bottom end of the first spring (206) is fixedly connected to the outer wall of the drawing instrument main body (1).
2. A convenient drawing device for mathematical education as claimed in claim 1 wherein: the angle drawing component (3) comprises an ear block (301), a second rotating shaft (302), a rotating ruler (303), a connecting hole (304), a guide rail (305), a nut (306), a screw (307) and a twisting head (308), the ear block (301) is symmetrically and fixedly connected to the outer wall of one side of the plotter main body (1) in a plastic connection mode, the rotating ruler (303) is installed on the outer wall between the ear blocks (301), the second rotating shaft (302) is fixedly connected to the outer walls of the two sides of the rotating ruler (303), the other end of the second rotating shaft (302) is rotatably connected to the inner wall of the ear block (301), the connecting hole (304) is formed in the inner wall of one side of the rotating ruler (303), the screw (307) is sleeved on the inner wall of one side of the connecting hole (304), the guide rail (305) is fixedly connected to the outer wall of one side of the plotter main body (1) in a plastic connection mode corresponding to the screw (307), the nut (306) is connected to the outer wall of the bottom end of the screw (307), and a screwing head (308) is fixedly welded on the outer wall of the top end of the screw (307).
3. A convenient drawing device for mathematical education as claimed in claim 1 wherein: the circular drawing component (4) comprises a third rotating shaft (401), a magnetic suction disc (402), a sliding rail (403), a guide hole (404), a threaded rod (405), a second rotating plate (406), a second sliding block (407), a threaded hole (408) and a chalk placing groove (409), the third rotating shaft (401) is rotatably connected on the inner wall of the bottom end of the drawing device main body (1), the magnetic suction disc (402) is fixedly connected on the outer wall of the bottom end of the third rotating shaft (401), the sliding rail (403) is fixedly connected on the outer wall of one side of the magnetic suction disc (402) of the drawing device main body (1) in a plastic connection mode, the threaded rod (405) is rotatably connected on the inner wall of one side of the sliding rail (403), the guide hole (404) is formed on the inner wall of one side of the sliding rail (403) corresponding to the threaded rod (405), the second rotating plate (406) is fixedly connected on the outer wall of one end of the threaded rod (405), the second sliding block (407) is slidably connected on the inner wall of the bottom end of the sliding rail (403), a threaded hole (408) is formed in the inner wall of one side of the second sliding block (407) corresponding to the threaded rod (405), and a chalk placing groove (409) is formed in the inner wall of the bottom end of the second sliding block (407).
4. A convenient drawing device for mathematical education as claimed in claim 1 wherein: and a handle (5) is fixedly connected to the outer wall of the top end of the plotter main body (1) in a plastic connection mode.
5. A convenient drawing device for mathematical education as claimed in claim 1 wherein: the shape of the rotating wheel (203) is an ellipse.
6. A convenient drawing device for mathematical education as claimed in claim 1 wherein: the inner wall of one side of the first spring (206) is sleeved on the outer wall of the first rotating shaft (204), and the first spring (206) is a torsion spring.
7. A convenient drawing device for mathematical education as claimed in claim 2 wherein: the guide rail (305) is arc-shaped.
8. The use method of the convenient drawing device for mathematical education is characterized in that: when the angle scale (207) is needed, the plotter main body (1) is moved to a position needing to be measured through the handle (5), then the first rotating plate (205) is rotated to enable the rotating wheel (203) on the first rotating shaft (204) to rotate ninety degrees along the accommodating groove (201), so that the protruding part of the rotating wheel (203) extrudes the connecting plate (208), and further the first sliding block (209) on the connecting plate (208) moves along the sliding groove (202), so that the angle scale (207) extends out of the accommodating groove (201), after the measurement is finished, the first rotating plate (205) is loosened, the rotating wheel (203) on the first rotating shaft (204) is reset under the action of the first spring (206), at the moment, the angle scale (207) is re-accommodated in the accommodating groove (201) under the action of the second spring (2010), when an angle is needed, rotating a screw (307) in the connecting hole (304) through a screwing head (308) so as to be loosened from a nut (306), then rotating a rotating ruler (303) along a second rotating shaft (302) on an ear block (301), rotating the rotating ruler to a specified position through scales on a guide rail (305), then reversely screwing the screwing head (308), re-screwing the screw (307) and the nut (306), so as to fix the rotating ruler (303), then carrying out angle drawing on a blackboard, when circular drawing is required, rotating a threaded rod (405) along a guide hole (404) in the slide rail (403) through a second rotating plate (406), then moving a second sliding block (407) to the specified position along the slide rail (403) under the action of a threaded hole (408), then placing chalk in a chalk placing groove (409), and then placing a magnetic attraction disc (402) on the blackboard, the blackboard is attracted, then the plotter main body (1) rotates for a circle along the third rotating shaft (401) through the handle (5), and then a circle is drawn on the blackboard through the chalk on the chalk placing groove (409).
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| CN202210062911.1A CN114228374B (en) | 2022-01-20 | 2022-01-20 | Convenient drawing device for mathematical education and application method thereof |
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| CN202210062911.1A CN114228374B (en) | 2022-01-20 | 2022-01-20 | Convenient drawing device for mathematical education and application method thereof |
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| CN114228374B CN114228374B (en) | 2023-12-26 |
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| CN114228374B (en) | 2023-12-26 |
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