CN203004800U - Epicycloid teaching aid - Google Patents
Epicycloid teaching aid Download PDFInfo
- Publication number
- CN203004800U CN203004800U CN 201320022688 CN201320022688U CN203004800U CN 203004800 U CN203004800 U CN 203004800U CN 201320022688 CN201320022688 CN 201320022688 CN 201320022688 U CN201320022688 U CN 201320022688U CN 203004800 U CN203004800 U CN 203004800U
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- CN
- China
- Prior art keywords
- epicycloid
- teaching aid
- rotating ring
- disk
- moving ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a mathematics teaching aid, in particular to an epicycloid teaching aid. The epicycloid teaching aid can facilitate making an epicycloid graph, and facilitates understanding a forming procedure of an epicycloid for a student. The epicycloid teaching aid comprises a disc and a moving ring, wherein an annular groove is processed in the middle of the external circumference surface of the disc; a plurality of antiskid ribs are axially and uniformly distributed in a groove bottom surface of the annular groove and in the external circumference surface of the moving ring; the moving ring is placed in the annular groove of the disc; the antiskid ribs on the moving ring are engaged with the antiskid ribs on the disc; the moving ring rolls along the circumference of the annular groove; a fixing hole for fixing a chalk is axially formed in the moving ring close to the internal circumference surface; and a fixing rod is arranged in the center of the upper surface of the disc. The epicycloid teaching aid is used for university mathematics teaching, facilitates visually understanding the forming procedure of the epicycloid for the student, and improves the teaching quality.
Description
Technical field
The utility model relates to a kind of teaching apparatus for mathematics.
Background technology
In College Mathematics Teaching, the teacher is when lecturing relevant epicycloidal shape and forming process, owing to there is no relevant teaching aid to the student, the teacher can only free-handly draw, and graphing is nonstandard, simultaneously, when the teacher explains, the student also is difficult to understand, thereby affects carrying out smoothly of teaching.
The utility model content
The purpose of this utility model is to provide a kind of epicycloid teaching aid, and it not only can conveniently make the epicycloid figure, also is convenient to simultaneously the student and understands epicycloidal forming process.
Realize above-mentioned purpose, the technical scheme that the utility model is taked is:
The epicycloid teaching aid, described epicycloid teaching aid comprises disk and rotating ring, the middle part of the outer circumference surface of disk is processed with cannelure, each uniform several antislip cog that is processed with vertically on the groove bottom of cannelure and on the outer circumference surface of rotating ring, rotating ring is placed in the cannelure of disk, antislip cog on rotating ring and the engagement of the antislip cog on disk, rotating ring rolls along the circumference of cannelure, be provided with vertically for the fixing fixing hole of chalk near the inner peripheral surface place on rotating ring, the upper surface center of disk is provided with fixed bar.
The outer surface of described fixed bar is provided with anti-skidding reticulate pattern.
The utility model with respect to the beneficial effect of prior art is:
1, utilize epicycloid teaching aid of the present utility model can make easily the figure of epicycloid (epitrochoid), particularly when the cannelure groove bottom diameter of disk equated with the external diameter of rotating ring, the curve of drawing was cardiod.
2, use epicycloid teaching aid of the present utility model to make the student understand more intuitively epicycloidal forming process, guaranteed carrying out smoothly of teaching, improved quality of instruction.
Description of drawings
Fig. 1 is epicycloid teaching aid top view of the present utility model, and in figure, anti-slip veins does not represent;
Fig. 2 is the front view of Fig. 1.
In figure, disk 1, rotating ring 2, cannelure 3, fixing hole 4, antislip cog 5, fixed bar 6, anti-skidding reticulate pattern 7.
The specific embodiment
as depicted in figs. 1 and 2, the epicycloid teaching aid, described epicycloid teaching aid comprises disk 1 and rotating ring 2, the middle part of the outer circumference surface of disk 1 is processed with cannelure 3, each uniform several antislip cog 5 that is processed with vertically on the groove bottom of cannelure 3 and on the outer circumference surface of rotating ring 2, rotating ring 2 is placed in the cannelure 3 of disk 1, antislip cog 5 on rotating ring 2 and 5 engagements of the antislip cog on disk 1, rotating ring 2 rolls along the circumference of cannelure 3, be provided with vertically for the fixing fixing hole 4 of chalk near the inner peripheral surface place on rotating ring 2, chalk inserts the interior convenient epicycloid figure of drawing of fixing hole 4, the upper surface center of disk 1 is provided with fixed bar 6, be convenient to hold, be used for fixed disc 1, the outer surface of described fixed bar 6 is provided with anti-skidding reticulate pattern 7, increasing friction force, and when being convenient to draw, disk 1 moves.
When drawing epicycloid, rotate rotating ring 2, make rotating ring 2 in the interior rolling of cannelure 3 of disk 1, utilize the chalk that inserts in fixing hole 4 to draw the epicycloid figure on blackboard.
Claims (2)
1. epicycloid teaching aid, it is characterized in that: described epicycloid teaching aid comprises disk (1) and rotating ring (2), the middle part of the outer circumference surface of disk (1) is processed with cannelure (3), each uniform several antislip cogs (5) that are processed with vertically on the groove bottom of cannelure (3) and on the outer circumference surface of rotating ring (2), rotating ring (2) is placed in the cannelure (3) of disk (1), antislip cog (5) engagement on antislip cog (5) on rotating ring (2) and disk (1), rotating ring (2) rolls along the circumference of cannelure (3), rotating ring (2) is upper to be provided with for the fixing fixing hole of chalk (4) vertically near the inner peripheral surface place, the upper surface center of disk (1) is provided with fixed bar (6).
2. epicycloid teaching aid as claimed in claim 1, it is characterized in that: the outer surface of described fixed bar (6) is provided with anti-skidding reticulate pattern (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022688 CN203004800U (en) | 2013-01-16 | 2013-01-16 | Epicycloid teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022688 CN203004800U (en) | 2013-01-16 | 2013-01-16 | Epicycloid teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203004800U true CN203004800U (en) | 2013-06-19 |
Family
ID=48596425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320022688 Expired - Fee Related CN203004800U (en) | 2013-01-16 | 2013-01-16 | Epicycloid teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203004800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108399836A (en) * | 2018-04-04 | 2018-08-14 | 合肥赛迅机电科技有限公司 | A kind of trochoidal track apparatus for demonstrating |
-
2013
- 2013-01-16 CN CN 201320022688 patent/CN203004800U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108399836A (en) * | 2018-04-04 | 2018-08-14 | 合肥赛迅机电科技有限公司 | A kind of trochoidal track apparatus for demonstrating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20140116 |