CN210139728U - High-number integrated drawing device - Google Patents
High-number integrated drawing device Download PDFInfo
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- CN210139728U CN210139728U CN201920925105.6U CN201920925105U CN210139728U CN 210139728 U CN210139728 U CN 210139728U CN 201920925105 U CN201920925105 U CN 201920925105U CN 210139728 U CN210139728 U CN 210139728U
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Abstract
High number collection drawing device relates to venturi's picture drawing device in the collection teaching. Comprises a drawing board, a movable slideway, a circle drawing ruler and a line drawing pen device; the center position of the front side of the slideway on the upper side and the lower side of the drawing board is provided with a longitudinal chute; a T-shaped sliding block is fixed on the rear side of the upper end and the lower end of the vertically arranged movable slide way, and the end part of the T-shaped sliding block is in sliding fit with a longitudinal scale line of the slide way; a transverse groove is arranged at the center of the movable slideway; the circle drawing ruler is arranged in front of the drawing board and is provided with a radius positioning groove; a round mandrel is arranged on the inner side of the movable slideway, a square sliding block is fixed at the front end of the round mandrel, and the sliding block is in sliding fit with a transverse groove of the movable slideway; the screw rod at the rear end of the round mandrel is inserted into the radius positioning groove of the circle drawing ruler; the pen tube of the line drawing pen device is in sliding fit with the radius positioning groove of the circle drawing ruler, and the rear end of the pen tube is provided with a pen point. The problems that the drawing of the mathematics set teaching Venturi map is complicated, the time is wasted and the like are solved.
Description
Technical Field
The utility model relates to a device for mathematical education, venturi apparatus picture drawing device in the teaching of concrete set.
Background
The set in mathematics is a set which combines some objects which are determined by human intuition or thinking and can be distinguished into a whole, and the whole is the set. Those objects that make up a collection are referred to as elements of the collection. And the set teaching is used for understanding simple set knowledge and primarily feeling the significance of the knowledge. Students can learn to use a set thought method to solve simpler practical problems by means of a Venn diagram, so that the students can feel the mutual relation between mathematics and life. The problems of 'repeat' and the like can be solved by using a set method.
When the teaching is integrated, the Venturi graph is adopted for explanation. The Venturi graph is a graph used for representing a set in a mathematical branch of a set theory. They are used to show mathematical or logical connections between different groups (sets) of things, and are particularly well suited to represent "rough relationships" between sets, which are also often used to help derive some rules about set operations. When the Venturi diagram is explained by mathematical set teaching, the Venturi diagram is drawn by hands, the hand-drawn diagram is not standard, if the standard Venturi diagram is drawn, auxiliary lines of transverse and longitudinal coordinates are drawn by using tools such as a triangular ruler and the like, the position of each circle center in the Venturi diagram is determined, then the Venturi diagram is drawn after the radius is measured, and therefore drawing is complicated and time is wasted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high number collection drawing device, it has solved mathematics set teaching and has drawn standard wen wei picture and should utilize instruments such as set square to draw horizontal and longitudinal coordinate's auxiliary line, confirms the position in each centre of a circle in the wen wei picture, then measures the radius and draws wen wei picture again, draws more loaded down with trivial details like this to waste time scheduling problem.
In order to solve the above problem, the utility model adopts the following technical scheme: the high-number integrated drawing device comprises a drawing board, a movable slideway, a circle drawing ruler and a line drawing pen device; the upper and lower edges of the drawing board are respectively provided with a slideway, the central position of the front side of each slideway is provided with a longitudinal sliding chute, and the front side of each slideway is also provided with a longitudinal scale line; a T-shaped sliding block is fixed on the rear side of the upper end and the lower end of the vertically arranged movable slide way, and the end part of the T-shaped sliding block is in sliding fit with a longitudinal scale line of the slide way; a transverse groove is arranged at the central position of the movable slideway, and a transverse scale line is arranged on the front side surface of the movable slideway; the circle drawing ruler is arranged in front of the drawing board, a radius positioning groove is formed in the circle drawing ruler, and a radius scale is arranged on the surface of the circle drawing ruler; a round mandrel is arranged on the inner side of the movable slideway, a square sliding block is fixed at the front end of the round mandrel, and the sliding block is in sliding fit with a transverse groove of the movable slideway; the rear end of the round mandrel is connected with a screw rod, the screw rod is inserted into a radius positioning groove of the circle drawing ruler, and the fixing nut is matched with the screw rod to fix the circle drawing ruler and the round mandrel; the pen tube of the line drawing pen device is in sliding fit with the radius positioning groove of the circle drawing ruler, and the rear end of the pen tube is provided with a pen point.
The utility model discloses a remove the relative coordinate position of the different centre of a circle in slide and the fixed circle of circle axle, with the convenient drawing of circle drawing chi circular, and then can be convenient draw the wen wei picture, centre of a circle location and radius size are accurate during the drawing, and it is laborsaving to draw labour saving and time saving.
Drawings
FIG. 1 is a schematic structural view of the demonstration board of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
fig. 4 is a state diagram of the present application.
The symbols in the drawings illustrate that: the drawing board comprises a drawing board 1, a slide way 2, a longitudinal sliding groove 2-1, a longitudinal scale line 2-2, a moving slide way 3, a transverse groove 3-1, a transverse scale line 3-2, a T-shaped sliding block 3-3, a circle drawing ruler 4, a radius positioning groove 4-1, a radius scale 4-2, a circle mandrel 4-3, a sliding block 4-4, a fixing nut 4-5, a screw rod 4-6, a line drawing pen device 5, a pen tube 5-1, a handle 5-2 and a rubber layer 6.
Detailed Description
The present invention will be described in detail with reference to the preferred embodiments.
As shown in fig. 1-3, the high-number integrated drawing device comprises a drawing board 1, a movable slideway 3, a circle drawing ruler 4 and a line drawing pen device 5; the upper and lower side edges of the drawing board 1 are respectively provided with a slideway 2, the central position of the front side of each slideway 2 is provided with a longitudinal sliding chute 2-1, and the front side of each slideway 2 is also provided with a longitudinal scale line 2-2; a T-shaped sliding block 3-3 is fixed on the rear side of the upper end and the lower end of a vertically arranged movable slide way 3, and the end part of the T-shaped sliding block 3-3 is in sliding fit with a longitudinal scale line 2-2 of the slide way 2; a transverse groove 3-1 is arranged at the central position of the movable slideway 3, and a transverse scale line 3-2 is arranged on the front side surface of the movable slideway 3; the circle drawing ruler 4 is arranged in front of the drawing board 1, a radius positioning groove 4-1 is arranged on the circle drawing ruler 4, and a radius scale 4-2 is arranged on the surface of the circle drawing ruler 4; a round mandrel 4-3 is arranged at the inner side of the movable slideway 3, a square sliding block 4-4 is fixed at the front end of the round mandrel 4-3, and the sliding block 4-4 is in sliding fit with the transverse groove 3-1 of the movable slideway 3; the rear end of the round mandrel 4-3 is connected with a screw rod 4-6, the screw rod 4-6 is inserted into a radius positioning groove 4-1 of the circle drawing ruler, a fixing nut 4-5 is matched with the screw rod 4-6 to fix the circle drawing ruler 4 and the round mandrel 4-3, and the end head of the screw rod 4-6 is hemispherical and is pressed against the surface of the drawing board 1 to play a role in positioning the circle center. When the radius chi removed the drawing board edge, the unable 360 degrees rotations of radius chi, can remove the radius chi through the pine shape nut, shorten the effective length of radius chi, then screw the fixed radius chi with the nut. The line drawing pen device 5 comprises a pen tube 5-1 and a handle 5-2, wherein the pen tube 5-1 is in sliding fit with a radius positioning groove 4-1 of a circle drawing ruler 4, a pen point is arranged at the rear end of the pen tube 5-1, the handle 5-2 is connected to the front end of the pen tube 5-1, and when the circle drawing ruler 4 is rotated to draw a circle, the circle drawing ruler 4 is moved to the rear side of a moving slideway 3, the circle drawing ruler is moved out to the outer side of the moving slideway through auxiliary pushing of the handle 5-2, and uninterrupted circle drawing can be achieved. The rubber layer 6 is arranged on the inner side of the longitudinal sliding groove 2-1 of the sliding way 2, the transverse groove 3-1 of the movable sliding way 3 and the radius positioning groove 4-1 of the circle drawing ruler 4, and the rubber layer 6 plays a role in damping, so that the sliding block in the sliding way can move under thrust, and when the thrust is stopped, the sliding block can be stably fixed in the sliding way.
As shown in fig. 4, when drawing the venturi diagram, the first circle is drawn first, and the drawing method is as follows: pushing the movable slide 3 to determine the longitudinal coordinate of the circle center, and pushing the movable circular mandrel 4-3 to determine the transverse coordinate of the circle center; then the radius size is determined by sliding the pen tube 5-1, and the circle drawing ruler 4 is rotated to draw a first circle. Repeating the above method to determine the second circle center coordinate and radius size, and drawing a second circle; and repeating the steps to draw a plurality of overlapped circles so as to draw a Venturi graph.
Claims (3)
1. The high-number integrated drawing device is characterized by comprising a drawing board, a movable slideway, a circle drawing ruler and a line drawing pen device; the upper and lower edges of the drawing board are respectively provided with a slideway, the central position of the front side of each slideway is provided with a longitudinal sliding chute, and the front side of each slideway is also provided with a longitudinal scale line; a T-shaped sliding block is fixed on the rear side of the upper end and the lower end of the vertically arranged movable slide way, and the end part of the T-shaped sliding block is in sliding fit with a longitudinal scale line of the slide way; a transverse groove is arranged at the central position of the movable slideway, and a transverse scale line is arranged on the front side surface of the movable slideway; the circle drawing ruler is arranged in front of the drawing board, a radius positioning groove is formed in the circle drawing ruler, and a radius scale is arranged on the surface of the circle drawing ruler; a round mandrel is arranged on the inner side of the movable slideway, a square sliding block is fixed at the front end of the round mandrel, and the sliding block is in sliding fit with a transverse groove of the movable slideway; the rear end of the round mandrel is connected with a screw rod, the screw rod is inserted into a radius positioning groove of the circle drawing ruler, and the fixing nut is matched with the screw rod to fix the circle drawing ruler and the round mandrel; the pen tube of the line drawing pen device is in sliding fit with the radius positioning groove of the circle drawing ruler, and the rear end of the pen tube is provided with a pen point.
2. The high-number drawing set as claimed in claim 1, wherein a handle is connected to the front end of the pen barrel.
3. The high-number integrated drawing device according to claim 1 or 2, wherein a rubber layer is provided inside the longitudinal sliding groove of the sliding path, the transverse groove of the moving sliding path, and the radius positioning groove of the circle drawing ruler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920925105.6U CN210139728U (en) | 2019-06-19 | 2019-06-19 | High-number integrated drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920925105.6U CN210139728U (en) | 2019-06-19 | 2019-06-19 | High-number integrated drawing device |
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| Publication Number | Publication Date |
|---|---|
| CN210139728U true CN210139728U (en) | 2020-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920925105.6U Active CN210139728U (en) | 2019-06-19 | 2019-06-19 | High-number integrated drawing device |
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| CN (1) | CN210139728U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112043035A (en) * | 2020-08-24 | 2020-12-08 | 太仓繁晟电子科技有限公司 | Scribing equipment for cloth |
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2019
- 2019-06-19 CN CN201920925105.6U patent/CN210139728U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112043035A (en) * | 2020-08-24 | 2020-12-08 | 太仓繁晟电子科技有限公司 | Scribing equipment for cloth |
| CN112043035B (en) * | 2020-08-24 | 2022-07-05 | 太仓繁晟电子科技有限公司 | Scribing equipment for cloth |
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