CN112356598A - Multifunctional drawing tool for constructional engineering and mathematics - Google Patents
Multifunctional drawing tool for constructional engineering and mathematics Download PDFInfo
- Publication number
- CN112356598A CN112356598A CN202011368734.7A CN202011368734A CN112356598A CN 112356598 A CN112356598 A CN 112356598A CN 202011368734 A CN202011368734 A CN 202011368734A CN 112356598 A CN112356598 A CN 112356598A
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- Prior art keywords
- bevel gear
- support frame
- sliding
- vertical
- horizontal
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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
- B43L9/02—Compasses
-
- 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
- B43L11/00—Non-circular-curve-drawing instruments
-
- 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
- B43L11/00—Non-circular-curve-drawing instruments
- B43L11/02—Non-circular-curve-drawing instruments for drawing conic sections
- B43L11/04—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses
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- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a multifunctional drawing tool for constructional engineering and mathematics, which comprises a base, a fixed bevel gear, a support frame, a fixed handle, an upper tightening bolt, a left bevel gear, a sliding rotating shaft, a large bevel gear, a support seat, a movable handle, a mounting frame, a sliding frame and a drawing part, wherein the top end of the base is fixedly provided with a horizontal fixed bevel gear, the top of the base is provided with a vertical support frame through an axial bearing, and the left end of the bottom of the support frame is fixedly provided with a horizontal fixed handle. The invention has the functions of drawing ellipses, circles and parabolas, thereby overcoming the defects of the traditional mathematics teaching aid, facilitating the drawing of teachers, ensuring the drawing quality, facilitating the understanding of students, ensuring the water-based pen to be always in good contact with the drawing surface by using the spring, ensuring the clarity and regularity of drawing, and drawing circles and ellipses with different sizes by using the sliding frame and the sliding rod which can be adjusted left and right, thereby enhancing the applicability of the teaching aid.
Description
Technical Field
The invention relates to a drawing tool, in particular to a multifunctional drawing tool for constructional engineering and mathematics.
Background
As is well known, various drawings need to be drawn in building engineering and teaching, particularly, the most extensive application range of a mathematical entity teaching aid at the present stage is a set square and a compass, wherein the set square is widely applied, almost all teaching processes needing drawing straight lines can not leave the figure of the set square, the compass is mainly suitable for the mathematical teaching of circles and arcs, the mathematical teaching at the middle school stage at present mostly relates to the knowledge of some ellipses and quadratic functions, and the teaching at the middle school stage is usually carried out by drawing images of the ellipses and the quadratic functions for assisting teaching, so that the understanding of students is enhanced, but the teacher carries out pure manual drawing in the traditional mode, but the teacher has the characteristic of smooth and excessive images of the ellipses and the quadratic functions, so that the teacher has the problem of inconvenient and irregular drawing in the drawing process, and certain negative influence is generated on the teaching of the teacher and the learning of the students, the shortcomings of the traditional mathematics teaching aid are highlighted.
Disclosure of Invention
The invention aims to provide a multifunctional drawing tool for constructional engineering and mathematics so as to solve the technical problem.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multifunctional drawing tool for building engineering and mathematics comprises a base, a fixed bevel gear, a support frame, a fixed handle, an upper tightening bolt, a left bevel gear, a sliding rotating shaft, a large bevel gear, a support seat, a movable handle, a mounting frame, a sliding frame and a drawing part, wherein the top end of the base is fixedly provided with a horizontal fixed bevel gear, the top of the base is provided with a vertical support frame through an axial bearing, the left end of the bottom of the support frame is fixedly provided with a horizontal fixed handle, the left part and the right part of the support frame are respectively in threaded connection with a horizontal upper tightening bolt, the left part of the support frame is provided with a horizontal left bevel gear through a bearing, the left bevel gear is meshed with the fixed bevel gear, the right part of the support frame is inserted with a horizontal sliding rotating shaft, the right end of the sliding rotating shaft is fixedly provided with a vertical large bevel gear, and the left part of the sliding, the utility model discloses a construction method of a support frame, including support frame, mounting bracket, support frame right part and mounting bracket front end, the support frame left part is fixed with a vertical supporting seat, a vertical activity handle is installed through axial bearing in the support frame top, support frame upper portion sliding connection has a horizontally mounting bracket, two go up the tight bolt rear end of top and can laminate with the mounting bracket front end, the mounting bracket right-hand member is fixed with a horizontally carriage, the mounting bracket right part passes through the bearing with the slip pivot and is connected, install a mapping part on the mounting bracket.
On the basis of the technical scheme, the drawing part comprises a transmission rotating shaft, a right bevel gear, a sliding seat, a lower puller bolt, a sliding rod, a lower mounting cylinder, a connecting rod, a connecting column, a drawing rod, a drawing column, an upper mounting cylinder, a nut, a spring and a water pen, wherein the right part of the mounting frame is provided with a vertical transmission rotating shaft through a bearing, the bottom of the transmission rotating shaft is fixedly provided with a horizontal right bevel gear, the right bevel gear is meshed with a large bevel gear, the bottom end of the transmission rotating shaft is fixedly provided with a horizontal sliding seat, the front end of the sliding seat is in threaded connection with a horizontal lower puller bolt, the rear ends of the two lower puller bolts can be attached to the front end of the sliding rod, the sliding seat is internally and slidably connected with a horizontal sliding rod, the bottom end of the right part of the sliding rod is fixedly provided with a vertical lower mounting cylinder, and the top end of the, the utility model discloses a pen drawing pen, including connecting rod, carriage, drawing post, installation section of thick bamboo, connecting rod right part bottom mounting has a vertical spliced pole, spliced pole and carriage bottom sliding connection, the activity riveting in connecting rod right part has a horizontally drawing pole, drawing pole right part top is fixed with a vertical drawing post, drawing post and carriage top sliding connection, the drawing post top is fixed with a vertical installation section of thick bamboo on, install down on a section of thick bamboo and the last installation section of thick bamboo respectively threaded connection have a vertical nut, install down an installation section of thick bamboo and the inside vertical spring of having put respectively of last installation section of thick bamboo, install down an inside nut and the spring mounting of having a vertical water pen through nut and spring mounting of an.
On the basis of the technical scheme, the sliding rotating shaft can slide left and right along the supporting frame and can be fastened on the supporting frame through two tightening bolts, the sliding rod can slide left and right along the sliding seat and can be fastened on the sliding seat through the tightening bolts at the lower part, the water-based pen can be installed in the upper installation barrel through the nut and the spring, and the pen point of the water-based pen can be attached to the bottom end of the base or the top end of the supporting seat under the action of the spring.
Compared with the prior art, the invention has the following advantages: the invention has the functions of drawing ellipses, circles and parabolas, thereby overcoming the defects of the traditional mathematics teaching aid, facilitating the drawing of teachers, ensuring the drawing quality, facilitating the understanding of students, ensuring the water-based pen to be always in good contact with the drawing surface by using the spring, ensuring the clarity and regularity of drawing, and drawing circles and ellipses with different sizes by using the sliding frame and the sliding rod which can be adjusted left and right, thereby enhancing the applicability of the teaching aid.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the mounting of the present invention.
Fig. 3 is a schematic view of the installation of the connecting rod of the present invention.
FIG. 4 is a schematic diagram of the present invention.
Fig. 5 is a schematic diagram of the present invention for drawing an ellipse.
FIG. 6 is a schematic diagram of the operation of the present invention for plotting a quadratic function.
In the figure: 1. the device comprises a base, 2, a fixed bevel gear, 3, a support frame, 4, a fixed handle, 5, an upper puller bolt, 6, a left bevel gear, 7, a sliding rotating shaft, 8, a large bevel gear, 9, a support seat, 10, a movable handle, 11, a mounting frame, 12, a sliding frame, 13, a drawing part, 14, a transmission rotating shaft, 15, a right bevel gear, 16, a sliding seat, 17, a lower puller bolt, 18, a sliding rod, 19, a lower mounting cylinder, 20, a connecting rod, 21, a connecting column, 22, a drawing rod, 23, a drawing column, 24, an upper mounting cylinder, 25, a nut, 26, a spring, 27 and a water-based pen.
Detailed Description
The invention is explained in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-6, a multifunctional drawing tool for construction engineering and mathematics comprises a base 1, a fixed bevel gear 2, a support frame 3, a fixed handle 4, an upper puller bolt 5, a left bevel gear 6, a sliding rotating shaft 7, a large bevel gear 8, a support seat 9, a movable handle 10, a mounting frame 11, a sliding frame 12 and a drawing part 13, wherein the top end of the base 1 is fixed with the horizontal fixed bevel gear 2, the top of the base 1 is provided with a vertical support frame 3 through an axial bearing, the left end of the bottom of the support frame 3 is fixed with the horizontal fixed handle 4, the left and right parts of the support frame 3 are respectively in threaded connection with the horizontal upper puller bolt 5, the left part of the support frame 3 is provided with the horizontal left bevel gear 6 through a bearing, the left bevel gear 6 is engaged with the fixed bevel gear 2, the right part of the support frame 3 is inserted with the horizontal sliding rotating shaft 7 in a gap, 7 right-hand members of slip pivot are fixed with a vertical big bevel gear 8, 7 left parts of slip pivot and 6 sliding connection of left bevel gear, 3 left parts of support frame are fixed with a vertical supporting seat 9, a vertical movable handle 10 is installed through axial bearing at 3 tops of support frame, 3 upper portions sliding connection of support frame have a horizontally mounting bracket 11, two go up tight bolt 5 rear ends in top and can laminate with the 11 front ends of mounting bracket, the 11 right-hand members of mounting bracket are fixed with a horizontally carriage 12, the 11 right parts of mounting bracket passes through the bearing with slip pivot 7 and is connected, install a mapping part 13 on the mounting bracket 11.
The drawing part 13 comprises a transmission rotating shaft 14, a right bevel gear 15, a sliding seat 16, a lower puller bolt 17, a sliding rod 18, a lower mounting cylinder 19, a connecting rod 20, a connecting column 21, a drawing rod 22, a drawing column 23, an upper mounting cylinder 24, a nut 25, a spring 26 and a water pen 27, wherein the right part of the mounting rack 11 is provided with a vertical transmission rotating shaft 14 through a bearing, the bottom of the transmission rotating shaft 14 is fixedly provided with a horizontal right bevel gear 15, the right bevel gear 15 is meshed with a large bevel gear 8, the bottom end of the transmission rotating shaft 14 is fixedly provided with a horizontal sliding seat 16, the front end of the sliding seat 16 is in threaded connection with the horizontal lower puller bolt 17, the rear ends of the two lower puller bolts 17 can be attached to the front end of the sliding rod 18, the sliding seat 16 is connected with the horizontal sliding rod 18 in a sliding manner, the right bottom end of the sliding rod 18 is fixedly provided with the vertical lower mounting cylinder 19, the top end of the right part of the support frame, a vertical connecting column 21 is fixed at the bottom end of the right part of the connecting rod 20, the connecting column 21 is slidably connected with the bottom of the sliding frame 12, a horizontal drawing rod 22 is movably riveted at the right part of the connecting rod 20, a vertical drawing column 23 is fixed at the top end of the right part of the drawing rod 22, the drawing column 23 is slidably connected with the top of the sliding frame 12, a vertical upper mounting cylinder 24 is fixed at the top end of the drawing column 23, a vertical nut 25 is respectively connected onto the lower mounting cylinder 19 and the upper mounting cylinder 24 in a threaded manner, a vertical spring 26 is respectively arranged inside the lower mounting cylinder 19 and the upper mounting cylinder 24, and a vertical water pen 27 is mounted inside the lower mounting cylinder 19 through the nut 25 and the spring 26.
The sliding rotating shaft 7 can slide left and right along the support frame 3 and can be fastened on the support frame 3 through two tightening bolts 5, the sliding rod 18 can slide left and right along the sliding seat 16 and can be fastened on the sliding seat 16 through the lower tightening bolt 17, the water-based pen 27 can be installed in the upper installation barrel 24 through the nut 25 and the spring 26, and the pen point of the water-based pen 27 can be attached to the bottom end of the base 1 or the top end of the support seat 9 under the action of the spring 26.
The working principle of the invention is as follows: when a circle needs to be drawn, the water pen 27 is installed in the lower installation cylinder 19, the position of the sliding rod 18 is adjusted, the lower installation cylinder 19 and the transmission rotating shaft 14 are coaxial, then the lower tightening bolt 17 is tightened, then the position of the sliding frame 12 on the support frame 3 is adjusted according to the size of the circle, then the two upper tightening bolts 5 are tightened, then the movable handle 10 is held by the left hand, the bottom end of the base 1 is tightly contacted and attached with a drawing surface, then the fixed handle 4 is held by the right hand to rotate for a circle by taking the axis of the base 1 as a rotating shaft, the left bevel gear 6 rotates for a circle along the fixed bevel gear 2 in a meshing way, the right bevel gear 15 rotates in a meshing way under the driving of the large bevel gear 8, so that the circle can be drawn, when an ellipse needs to be drawn, only the position of the sliding rod 18 needs to be moved, the lower installation cylinder 19 and the transmission rotating shaft 14 do not have the same axis, and the axle distance of the lower mounting cylinder 19 and the transmission rotating shaft 14 determines the size of the ellipse, when an image of a quadratic function needs to be drawn, the water-based pen 27 is mounted in the upper mounting cylinder 24, the two upper puller bolts 5 are manually rotated to remove the contact between the upper puller bolts 5 and the upper sliding frame 12, then the fixed handle 4 is held by the left hand to ensure that the top end of the supporting seat 9 is tightly contacted and attached with the drawing surface, then the right hand pulls the lower mounting cylinder 19, the ellipse can be drawn on the drawing surface through the water-based pen 27, and due to the friction between the pen point of the water-based pen 27 and the drawing surface, the dead point can be smoothly overcome when the plotting column 23 moves to the middle part of the sliding frame 12, so that the smoothness of plotting can be ensured.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.
Claims (3)
1. The utility model provides a multifunctional building engineering and drawing instrument for mathematics, includes base (1), decides bevel gear (2), support frame (3), decides handle (4), goes up top jack bolt (5), left bevel gear (6), slip pivot (7), big bevel gear (8), supporting seat (9), activity handle (10), mounting bracket (11), carriage (12), mapping part (13), its characterized in that: a horizontal fixed bevel gear (2) is fixed at the top end of the base (1), a vertical support frame (3) is installed at the top of the base (1) through an axial bearing, a horizontal fixed handle (4) is fixed at the left end of the bottom of the support frame (3), a horizontal upper jacking bolt (5) is connected to each of the left part and the right part of the support frame (3) in a threaded manner, a horizontal left bevel gear (6) is installed at the left part of the support frame (3) through a bearing, the left bevel gear (6) is meshed with the fixed bevel gear (2), a horizontal sliding rotating shaft (7) is inserted into a right gap of the support frame (3), a vertical large bevel gear (8) is fixed at the right end of the sliding rotating shaft (7), the left part of the sliding rotating shaft (7) is connected with the left bevel gear (6) in a sliding manner, a vertical support seat (9) is fixed at the left part of the support frame, support frame (3) top is installed a vertical activity handle (10) through axial bearing, support frame (3) upper portion sliding connection has a horizontally mounting bracket (11), two go up top jack bolt (5) rear end and can laminate with mounting bracket (11) front end, mounting bracket (11) right-hand member is fixed with a horizontally carriage (12), mounting bracket (11) right part is connected through the bearing with slip pivot (7), install a mapping part (13) on mounting bracket (11).
2. The graphic tool for multipurpose architectural engineering and mathematics as recited in claim 1, wherein: the drawing part (13) comprises a transmission rotating shaft (14), a right bevel gear (15), a sliding seat (16), a lower puller bolt (17), a sliding rod (18), a lower mounting cylinder (19), a connecting rod (20), a connecting column (21), a drawing rod (22), a drawing column (23), an upper mounting cylinder (24), a screw cap (25), a spring (26) and a water pen (27), wherein the right part of the mounting frame (11) is provided with a vertical transmission rotating shaft (14) through a bearing, the bottom of the transmission rotating shaft (14) is fixedly provided with a horizontal right bevel gear (15), the right bevel gear (15) is meshed with a large bevel gear (8), the bottom of the transmission rotating shaft (14) is fixedly provided with a horizontal sliding seat (16), the front end of the sliding seat (16) is in threaded connection with the horizontal lower puller bolt (17), and the rear ends of the lower puller bolts (17) can be attached to the front end of the sliding rod (18), the utility model discloses a drawing device, including sliding seat (16), slide bar (16), support frame (3), connecting rod (22), drawing pole (22), sliding seat (16), sliding seat sliding connection have a horizontally slide bar (18), slide bar (18) right part bottom mounting has a vertical lower installation section of thick bamboo (19), support frame (3) right part top end activity riveting has a horizontally connecting rod (20), connecting rod (20) right part bottom mounting has a vertical spliced pole (21), spliced pole (21) and carriage (12) bottom sliding connection, connecting rod (20) right part activity riveting has a horizontal drawing pole (22), drawing pole (22) right part top is fixed with a vertical drawing post (23), drawing post (23) and carriage (12) top sliding connection, drawing post (23) top is fixed with a vertical upper installation section of thick bamboo (24), install respectively threaded connection has a vertical nut (25) on section of thick bamboo (19) and the upper installation section of thick bamboo (24) down, a vertical spring (26) is arranged in each of the lower mounting cylinder (19) and the upper mounting cylinder (24), and a vertical water pen (27) is mounted in each of the lower mounting cylinder (19) and the upper mounting cylinder (24) through a nut (25) and the spring (26).
3. The graphic tool for multipurpose architectural engineering and mathematics according to claim 1 or 2, wherein: the utility model discloses a water-based pen, including support frame (3), slide rotating shaft (7), slide rod (18), slide rod (17), water-based pen (27), its nib can be laminated with base (1) bottom or supporting seat (9) top under the effect of spring (26), slide shaft (7) can be along support frame (3) horizontal slip, and can fasten on support frame (3) through two tight bolt (5) in top, slide rod (18) can be along slide holder (16) horizontal slip, and can fasten on slide holder (16) through tight bolt in top (17) down, can install in last installation section of thick bamboo (24) through nut (25) and spring (26), water-based pen (27) can be laminated with base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011368734.7A CN112356598A (en) | 2020-11-30 | 2020-11-30 | Multifunctional drawing tool for constructional engineering and mathematics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011368734.7A CN112356598A (en) | 2020-11-30 | 2020-11-30 | Multifunctional drawing tool for constructional engineering and mathematics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112356598A true CN112356598A (en) | 2021-02-12 |
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ID=74536859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011368734.7A Pending CN112356598A (en) | 2020-11-30 | 2020-11-30 | Multifunctional drawing tool for constructional engineering and mathematics |
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| Country | Link |
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| CN (1) | CN112356598A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113334973A (en) * | 2021-07-02 | 2021-09-03 | 重庆第二师范学院 | Ellipse and ellipse tangent drawing device and using method thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86200637U (en) * | 1986-01-19 | 1987-04-29 | 黄善坤 | Multi purpose compasses |
| CN2042417U (en) * | 1988-11-30 | 1989-08-09 | 那文绪 | Ellipsograph |
| CN2075147U (en) * | 1990-03-27 | 1991-04-17 | 延光 | Multipurpose ellipse plotter |
| CN2198125Y (en) * | 1994-08-24 | 1995-05-24 | 曹虎林 | Conic curve drawing instrument |
| CN1141854A (en) * | 1995-08-03 | 1997-02-05 | 王启东 | Ellipsograph |
| CN2318049Y (en) * | 1997-12-16 | 1999-05-12 | 王卓卓 | Ellipsograph |
| CN2321632Y (en) * | 1998-02-26 | 1999-06-02 | 宋珊珊 | Parabola drawing instrument |
| CN2452751Y (en) * | 2000-05-05 | 2001-10-10 | 鲁觉海 | Multi-functional compasses |
| CN201220548Y (en) * | 2008-05-27 | 2009-04-15 | 陈彧 | Secondary curves instrument |
| CN201338474Y (en) * | 2009-01-16 | 2009-11-04 | 穆合塔尔·麦提努日 | Elliptical compass |
| CN201856531U (en) * | 2010-11-11 | 2011-06-08 | 孙赟 | Ellipsograph |
| CN103909772A (en) * | 2014-04-09 | 2014-07-09 | 韶关学院 | Ellipsograph allowing for stepless regulation of radius of long and short shafts and design method thereof |
| CN206900045U (en) * | 2017-03-23 | 2018-01-19 | 张天舒 | Multifunction drawing tool and multifunctional drawing tackling |
| CN207190611U (en) * | 2017-05-27 | 2018-04-06 | 张世涵 | Parabola drawing apparatus |
-
2020
- 2020-11-30 CN CN202011368734.7A patent/CN112356598A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86200637U (en) * | 1986-01-19 | 1987-04-29 | 黄善坤 | Multi purpose compasses |
| CN2042417U (en) * | 1988-11-30 | 1989-08-09 | 那文绪 | Ellipsograph |
| CN2075147U (en) * | 1990-03-27 | 1991-04-17 | 延光 | Multipurpose ellipse plotter |
| CN2198125Y (en) * | 1994-08-24 | 1995-05-24 | 曹虎林 | Conic curve drawing instrument |
| CN1141854A (en) * | 1995-08-03 | 1997-02-05 | 王启东 | Ellipsograph |
| CN2318049Y (en) * | 1997-12-16 | 1999-05-12 | 王卓卓 | Ellipsograph |
| CN2321632Y (en) * | 1998-02-26 | 1999-06-02 | 宋珊珊 | Parabola drawing instrument |
| CN2452751Y (en) * | 2000-05-05 | 2001-10-10 | 鲁觉海 | Multi-functional compasses |
| CN201220548Y (en) * | 2008-05-27 | 2009-04-15 | 陈彧 | Secondary curves instrument |
| CN201338474Y (en) * | 2009-01-16 | 2009-11-04 | 穆合塔尔·麦提努日 | Elliptical compass |
| CN201856531U (en) * | 2010-11-11 | 2011-06-08 | 孙赟 | Ellipsograph |
| CN103909772A (en) * | 2014-04-09 | 2014-07-09 | 韶关学院 | Ellipsograph allowing for stepless regulation of radius of long and short shafts and design method thereof |
| CN206900045U (en) * | 2017-03-23 | 2018-01-19 | 张天舒 | Multifunction drawing tool and multifunctional drawing tackling |
| CN207190611U (en) * | 2017-05-27 | 2018-04-06 | 张世涵 | Parabola drawing apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113334973A (en) * | 2021-07-02 | 2021-09-03 | 重庆第二师范学院 | Ellipse and ellipse tangent drawing device and using method thereof |
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Application publication date: 20210212 |