CN104008694A - Teaching aid for drawing contour curve of cam - Google Patents
Teaching aid for drawing contour curve of cam Download PDFInfo
- Publication number
- CN104008694A CN104008694A CN201410163622.6A CN201410163622A CN104008694A CN 104008694 A CN104008694 A CN 104008694A CN 201410163622 A CN201410163622 A CN 201410163622A CN 104008694 A CN104008694 A CN 104008694A
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- teaching aid
- panel
- cross bar
- cam
- gear
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- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 230000000712 assembly Effects 0.000 claims description 19
- 238000000429 assembly Methods 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
The invention discloses a teaching aid for drawing the contour curve of a cam and belongs to the field of teaching aids. The teaching aid comprises a box, a power unit, a driving gear, an L-shaped rod, a two-link mechanism, a telescopic device, a small cylinder, a rack, a transmission gear and the cam. The box comprises a first panel. The power unit comprises a power gear. The power unit, the driving gear and the rack are installed on the first panel. The power gear is meshed with the driving gear. One end of the two-link mechanism is fixed to a rotary shaft of the driving gear. The L-shaped rod comprises a cross rod and a vertical rod which are connected with each other in a perpendicular mode. The other end of the two-link mechanism is rotatably connected with one end of the cross rod. The other end of the cross rod is connected with the vertical rod. The transmission gear is arranged at the other end of the cross rod and meshed with the rack. The cam is fixed to the transmission gear. The telescopic device is connected with the vertical rod. The small cylinder is arranged on the telescopic device and is tangent to the cam. A pen point is arranged on the small cylinder.
Description
Technical field
The present invention relates to educational aid field, particularly a kind of cam profile curve is drawn teaching aid.
Background technology
The teaching of cam is the difficult point in mechanical principle classroom, although the mechanical teaching aid of cam also has utilization in general classroom, is using static cam as teaching aid mostly, carries out the explanation of cam knowledge.And for the cam moving, in classroom, seldom have correspondingly teaching aid.And the material that existing static cam teaching aid adopts is metal, and high expensive, carries inconvenience, although can learn corresponding knowledge point, but lack in the process learning attractive in appearance, lack artistic glamour, often teaching aid use is of a specified duration, will produce a kind of plodding sensation.
Summary of the invention
In order to solve the problem of prior art, the embodiment of the present invention provides a kind of cam profile curve to draw teaching aid.Described technical scheme is as follows:
The embodiment of the present invention provides a kind of cam profile curve to draw teaching aid, and described teaching aid comprises:
Box, propulsion system, driving gear, L-type bar, two linkage assemblys, telescopic mounting, small column, tooth bar, transmission gear and cam;
Described box comprises the first panel, described propulsion system comprise power gear, described propulsion system, described driving gear and described tooth bar are arranged on described the first panel, and described power gear engages with described driving gear, one end of described two linkage assemblys is fixed on the rotation axis of described driving gear, described L-type bar comprises cross bar connected vertically and montant, the other end of described two linkage assemblys and one end of described cross bar are rotatably connected, the other end of described cross bar is connected with described montant, and the other end of described cross bar is provided with transmission gear, described transmission gear engages with described tooth bar, described cam is fixed on described transmission gear, described telescopic mounting is connected with described montant, described small column is located on described telescopic mounting, described small column and described cam are tangent, described small column is provided with nib.
In a kind of implementation of the embodiment of the present invention, described propulsion system comprise clockwork spring, and described clockwork spring is connected with described power gear.
In the another kind of implementation of the embodiment of the present invention, described teaching aid also comprises chute, described box also comprises the second panel be arrangeding in parallel with described the first panel, described the first panel is connected by side plate with described the second panel, described cross bar is arranged in described chute, and described chute is fixed on described the second panel.
In the another kind of implementation of the embodiment of the present invention, described nib is close to described the second plane.
In the another kind of implementation of the embodiment of the present invention, described the first panel and described the second panel are glass plastic panel.
In the another kind of implementation of the embodiment of the present invention, described two linkage assemblys comprise the first cross bar and the second cross bar, one end of described the first cross bar and the second cross bar is rotatably connected, the other end of described the first cross bar and described L-type bar are rotatably connected, and the other end of described the second cross bar is fixed on the rotation axis of described driving gear.
In the another kind of implementation of the embodiment of the present invention, described telescopic mounting is sleeve, and described sleeve is connected slidably with described montant.
In the another kind of implementation of the embodiment of the present invention, described telescopic mounting is spring assembly, and described spring assembly is connected with described montant.
In the another kind of implementation of the embodiment of the present invention, described teaching aid also comprises base, and described box is arranged on described base.
In the another kind of implementation of the embodiment of the present invention, described teaching aid also comprises hook, and described hook is arranged on described box.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
By being arranged on propulsion system on the first panel, driving gear and tooth bar, the power gear of propulsion system engages with driving gear, L-type bar comprises cross bar connected vertically and montant, one end of two linkage assemblys is fixed on the rotation axis of driving gear, the other end of two linkage assemblys and one end of cross bar are rotatably connected, the other end of cross bar is connected with montant, when propulsion system work, drive driving gear to rotate, driving gear drives L-type bar slidably reciprocating by two linkage assemblys, and the other end of cross bar is also provided with transmission gear, the engagement of driving cog wheel and rack, therefore transmission gear back and forth movement on tooth bar, because cam is fixed on transmission gear, so in the time that transmission gear rotates, cam also rotates, due to cam and small column tangent, therefore, small column can move along the montant of L-type bar, and in another direction, small column also can be along with the beam movement of L-type bar, in this motion process, the movement locus of small column is a cam profile curve, nib is set on small column can be depicted this cam profile curve, for observing, study and research, this teaching aid is not only vivid, easy to use and carry, and cost is low, allow mechanical classroom be full of vividness and artistry.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation that the cam profile curve that provides of the embodiment of the present invention is drawn teaching aid;
Fig. 2 is the structural representation that the cam profile curve that provides of the embodiment of the present invention is drawn teaching aid.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment
The embodiment of the present invention provides a kind of cam profile curve to draw teaching aid, and referring to Fig. 1 and 2, this teaching aid comprises:
Box 1, propulsion system 2, driving gear 3, L-type bar 4, two linkage assemblys 5, telescopic mounting 6, small column 7, tooth bar 8, transmission gear 9 and cam 10;
Box 1 comprises the first panel, propulsion system 2 comprise power gear 2a, propulsion system 2, driving gear 3 and tooth bar 8 are arranged on the first panel, and power gear 2a engages with driving gear 3, one end of two linkage assemblys 5 is fixed on the rotation axis of driving gear 3, L-type bar 4 comprises cross bar 41 connected vertically and montant 42, one end of the other end of two linkage assemblys 5 and cross bar 41 is rotatably connected, the other end of cross bar 41 is connected with montant 42, and the other end of cross bar 41 is provided with transmission gear 9, transmission gear 9 engages with tooth bar 8, cam 10 is fixed on transmission gear 9, telescopic mounting 6 is connected with montant 42, small column 7 is located on telescopic mounting 6, small column 7 is tangent with cam 10, small column 7 is provided with nib.
In the present embodiment, propulsion system 2 comprise clockwork spring, and clockwork spring is connected with power gear 2a.In other embodiments, these propulsion system 2 can also be made up of equipment such as electro-motors.
Further, this teaching aid also comprises chute 4a, and box 1 also comprises the second panel be arrangeding in parallel with the first panel, and the first panel is connected by side plate with the second panel, and cross bar 41 is arranged in chute 4a, and chute 4a is fixed on the second panel.
In addition, in the present embodiment, above-mentioned nib can also be close to the second panel, so that nib can be drawn on the second panel.
In the time that propulsion system 2 are opened, drive driving gear 3 to rotate, driving gear 3 drives L-type bar 4 to slidably reciprocate in chute 4a by two linkage assemblys 5, correspondingly, transmission gear 9 is back and forth movement on tooth bar 8, in the time that transmission gear 9 rotates, cam 10 also rotates, because cam 10 and small column 7 are tangent, therefore, small column 7 can move along the montant 42 of L-type bar 4, and in another direction, small column 7 also can be along with the cross bar of L-type bar 4 41 moves, and therefore, in this motion process, the movement locus of small column 7 is cam profile curves.Nib is set on small column 7 and this cam profile curve can be depicted on the second transparent panel, for observing, learn and research, for example, calculate cam profile curve equation.
In the present embodiment, the first panel and the second panel are glass plastic panel.Adopting glass plastic to make the box of teaching aid can weight reduction, is convenient for carrying and moves, and cost is low.
Referring to Fig. 1 and 2, two linkage assemblys 5 comprise the first cross bar 52 and the second cross bar 51, one end of the first cross bar 52 and the second cross bar 51 is rotatably connected, and the other end of the first cross bar 52 and L-type bar 4 are rotatably connected, and the other end of the second cross bar 51 is fixed on the rotation axis of driving gear 3.
In the present embodiment, telescopic mounting 6 can be sleeve, and sleeve is connected slidably with montant 42.
In other embodiments, telescopic mounting 6 can also be spring assembly, and spring assembly is connected with montant 42.
Further, this teaching aid can also comprise base, and box 1 is arranged on base.Thereby easy to use, ensure stationarity, and not easy to wear.
Further, this teaching aid also comprises hook, and hook is arranged on box 1.The used time facilitate teaching aid can not hung placement.
In the time of specific implementation, propulsion system 2 and driving gear 3 are arranged on the first panel by web member, and web member comprises screw bolt and nut.
In the time of specific implementation, chute 4a can stick on the second panel by glue.
Further, on the second panel, can also print the knowledge point relevant to cam profile curve, when convenient this teaching aid of observation, learn, allow mechanical classroom be full of vividness and artistry.
Further, can also on the gear in this teaching aid, glue note picture, to strengthen the aesthetic measure of teaching aid.
The embodiment of the present invention is by being arranged on propulsion system on the first panel, driving gear and tooth bar, the power gear of propulsion system engages with driving gear, L-type bar comprises cross bar connected vertically and montant, one end of two linkage assemblys is fixed on the rotation axis of driving gear, the other end of two linkage assemblys and one end of cross bar are rotatably connected, the other end of cross bar is connected with montant, when propulsion system work, drive driving gear to rotate, driving gear drives L-type bar slidably reciprocating by two linkage assemblys, and the other end of cross bar is also provided with transmission gear, the engagement of driving cog wheel and rack, therefore transmission gear back and forth movement on tooth bar, because cam is fixed on transmission gear, so in the time that transmission gear rotates, cam also rotates, due to cam and small column tangent, therefore, small column can move along the montant of L-type bar, and in another direction, small column also can be along with the beam movement of L-type bar, in this motion process, the movement locus of small column is a cam profile curve, nib is set on small column can be depicted this cam profile curve, for observing, study and research, this teaching aid is not only vivid, easy to use and carry, and cost is low, allow mechanical classroom be full of vividness and artistry.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. cam profile curve is drawn a teaching aid, it is characterized in that, described teaching aid comprises:
Box (1), propulsion system (2), driving gear (3), L-type bar (4), two linkage assemblys (5), telescopic mounting (6), small column (7), tooth bar (8), transmission gear (9) and cam (10);
Described box (1) comprises the first panel, described propulsion system (2) comprise power gear (2a), described propulsion system (2), described driving gear (3) and described tooth bar (8) are arranged on described the first panel, and described power gear (2a) engages with described driving gear (3), one end of described two linkage assemblys (5) is fixed on the rotation axis of described driving gear (3), described L-type bar (4) comprises cross bar connected vertically (41) and montant (42), one end of the other end of described two linkage assemblys (5) and described cross bar (41) is rotatably connected, the other end of described cross bar (41) is connected with described montant (42), and the other end of described cross bar (41) is provided with transmission gear (9), described transmission gear (9) engages with described tooth bar (8), described cam (10) is fixed on described transmission gear (9), described telescopic mounting (6) is connected with described montant (42), described small column (7) is located on described telescopic mounting (6), described small column (7) is tangent with described cam (10), described small column (7) is provided with nib.
2. teaching aid according to claim 1, is characterized in that, described propulsion system (2) comprise clockwork spring, and described clockwork spring is connected with described power gear (2a).
3. teaching aid according to claim 1, it is characterized in that, described teaching aid also comprises chute (4a), described box (1) also comprises the second panel be arrangeding in parallel with described the first panel, described the first panel is connected by side plate with described the second panel, described cross bar (41) is arranged in described chute (4a), and described chute (4a) is fixed on described the second panel.
4. teaching aid according to claim 3, is characterized in that, described nib is close to described the second plane.
5. teaching aid according to claim 3, is characterized in that, described the first panel and described the second panel are glass plastic panel.
6. teaching aid according to claim 1, it is characterized in that, described two linkage assemblys (5) comprise the first cross bar (52) and the second cross bar (51), one end of described the first cross bar (52) and the second cross bar (51) is rotatably connected, the other end of described the first cross bar (52) and described L-type bar (4) are rotatably connected, and the other end of described the second cross bar (51) is fixed on the rotation axis of described driving gear (3).
7. teaching aid according to claim 1, is characterized in that, described telescopic mounting (6) is sleeve, and described sleeve is connected slidably with described montant (42).
8. teaching aid according to claim 1, is characterized in that, described telescopic mounting (6) is spring assembly, and described spring assembly is connected with described montant (42).
9. according to the teaching aid described in claim 1～8 any one, it is characterized in that, described teaching aid also comprises base, and described box (1) is arranged on described base.
10. according to the teaching aid described in claim 1～8 any one, it is characterized in that, described teaching aid also comprises hook, and described hook is arranged on described box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163622.6A CN104008694B (en) | 2014-04-22 | 2014-04-22 | Cam profile curve draws teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163622.6A CN104008694B (en) | 2014-04-22 | 2014-04-22 | Cam profile curve draws teaching aid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104008694A true CN104008694A (en) | 2014-08-27 |
| CN104008694B CN104008694B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410163622.6A Expired - Fee Related CN104008694B (en) | 2014-04-22 | 2014-04-22 | Cam profile curve draws teaching aid |
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| Country | Link |
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| CN (1) | CN104008694B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332092A (en) * | 2014-09-17 | 2015-02-04 | 杭州电子科技大学 | Apparatus for drawing cam profile |
| CN104332094A (en) * | 2014-09-17 | 2015-02-04 | 杭州电子科技大学 | Apparatus for drawing cam motion chart |
| CN104485050A (en) * | 2014-10-27 | 2015-04-01 | 杭州电子科技大学 | Demonstration mechanism for realizing cam contour drawing through reversal method through oscillating follower |
| CN104616580A (en) * | 2014-12-25 | 2015-05-13 | 北京理工大学 | Cam mechanism contour design and driven part motion characteristic mapping platform |
| CN111462541A (en) * | 2020-04-10 | 2020-07-28 | 刘颖 | English teaching is with contest equipment that has enjoyment |
| CN113487955A (en) * | 2021-06-02 | 2021-10-08 | 金超焕 | Multifunctional mechanical motion display teaching aid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1542582A (en) * | 1924-01-16 | 1925-06-16 | Paul A Raiche | Cam-forming machine |
| CN202748988U (en) * | 2012-09-14 | 2013-02-20 | 崔永杰 | Demonstration device for physics teaching |
| CN103680286A (en) * | 2013-12-25 | 2014-03-26 | 周帅 | Multifunctional cam mechanism teaching tool |
| CN203910151U (en) * | 2014-04-22 | 2014-10-29 | 江汉大学 | Cam contour curve drawing teaching aid |
-
2014
- 2014-04-22 CN CN201410163622.6A patent/CN104008694B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1542582A (en) * | 1924-01-16 | 1925-06-16 | Paul A Raiche | Cam-forming machine |
| CN202748988U (en) * | 2012-09-14 | 2013-02-20 | 崔永杰 | Demonstration device for physics teaching |
| CN103680286A (en) * | 2013-12-25 | 2014-03-26 | 周帅 | Multifunctional cam mechanism teaching tool |
| CN203910151U (en) * | 2014-04-22 | 2014-10-29 | 江汉大学 | Cam contour curve drawing teaching aid |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332092A (en) * | 2014-09-17 | 2015-02-04 | 杭州电子科技大学 | Apparatus for drawing cam profile |
| CN104332094A (en) * | 2014-09-17 | 2015-02-04 | 杭州电子科技大学 | Apparatus for drawing cam motion chart |
| CN104332092B (en) * | 2014-09-17 | 2017-02-15 | 杭州电子科技大学 | Apparatus for drawing cam profile |
| CN104332094B (en) * | 2014-09-17 | 2017-02-15 | 杭州电子科技大学 | Apparatus for drawing cam motion chart |
| CN104485050A (en) * | 2014-10-27 | 2015-04-01 | 杭州电子科技大学 | Demonstration mechanism for realizing cam contour drawing through reversal method through oscillating follower |
| CN104485050B (en) * | 2014-10-27 | 2017-05-10 | 杭州电子科技大学 | Demonstration mechanism for realizing cam contour drawing through reversal method through oscillating follower |
| CN104616580A (en) * | 2014-12-25 | 2015-05-13 | 北京理工大学 | Cam mechanism contour design and driven part motion characteristic mapping platform |
| CN104616580B (en) * | 2014-12-25 | 2017-09-19 | 北京理工大学 | Cam mechanism profile design and driven member kinetic characteristic Mapping Flat |
| CN111462541A (en) * | 2020-04-10 | 2020-07-28 | 刘颖 | English teaching is with contest equipment that has enjoyment |
| CN113487955A (en) * | 2021-06-02 | 2021-10-08 | 金超焕 | Multifunctional mechanical motion display teaching aid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104008694B (en) | 2016-03-09 |
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Granted publication date: 20160309 |
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