CN105070153B - A kind of multiaspect orthographic projection descriptive geometry teaching instrument - Google Patents
A kind of multiaspect orthographic projection descriptive geometry teaching instrument Download PDFInfo
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- CN105070153B CN105070153B CN201510463924.XA CN201510463924A CN105070153B CN 105070153 B CN105070153 B CN 105070153B CN 201510463924 A CN201510463924 A CN 201510463924A CN 105070153 B CN105070153 B CN 105070153B
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Abstract
The invention discloses a kind of multiaspect orthographic projection descriptive geometry teaching instrument, including base, graphics device, source of parallel light unit, the graphics device, source of parallel light unit are installed on base, also include model support and turn device, the model support is arranged on base with turn device, model support and turn device are located between graphics device and source of parallel light unit and graphics device, source of parallel light unit, model support and turn device are located along the same line, demonstration model for teaching be fixedly mounted on model support with turn device.The present invention is provided with model support and turn device, under the drive of the motor I and motor II of model support and turn device, demonstration model for teaching rotates in horizontal plane and vertical plane respectively, form six views of demonstration model for teaching, so as to realize six face orthographic projection processes of demonstration model for teaching, it disclosure satisfy that the demand of the abundant content of courses, it is to avoid projection box function is single, shortcoming of very flexible.
Description
Technical field
The present invention relates to a kind of instruments used for education, more particularly to a kind of multiaspect orthographic projection descriptive geometry teaching instrument.
Background technology
Descriptive geometry is that the geometry of three dimensions and the subject of orientation problem are expressed in research with X-Y scheme.Engineering
The main channel of information interchange is " figure " in design, manufacture, and descriptive geometry expresses the theoretical foundation for the science that provides for pattern.Throw
Orthography in shadow method is due to that can react the real shapes and sizes of object, so applied widely in engineering, but
The general principle for being orthography is abstract, it is necessary to which stronger space imagining ability and spatial thinking ability could fundamentally
This principle is grasped, and is applied to engineering in practice, therefore is used in the aided education that teaching process is used for ocular demonstration orthography
Tool just arises at the historic moment.
Projection box in traditional descriptive geometry teaching apparatus can show naive model in upright projection face（V）, level throw
Shadow face（H）, edge-on perspective plane（W）Planar graph, but each projection box is merely able to show a model, and function is single, and
Flexibility is poor, is not suitable for Multipurpose teaching.There is the three-dimensional entity model teaching aid of detachable multiple combinations mode in addition, but
That it can not demonstrate projection process and projection theory, simply one build on 3D solid direct feel.Therefore, how gram
Take these shortcomings, exploitation there is multi-functional, strong applicability descriptive geometry teaching aid to become for it is in the urgent need to address at present the problem of.
The content of the invention
In order to solve the above-mentioned technical problem, present invention offer one kind is simple in construction, can not only demonstrate point, line, surface just
Forming process in sciagraphy, and the multiaspect of various three-dimensional entity model perspective view forming processes can be demonstrated just throw
Shadow descriptive geometry teaching instrument.
Technical proposal that the invention solves the above-mentioned problems is：A kind of multiaspect orthographic projection descriptive geometry teaching instrument, including base,
Graphics device, source of parallel light unit, the graphics device, source of parallel light unit are installed on base, in addition to
Model support and turn device, the model support are arranged on base with turn device, and model support is located at turn device
Between graphics device and source of parallel light unit and graphics device, source of parallel light unit, model support and turn device
It is located along the same line, demonstration model for teaching is fixedly mounted on model support and turn device, the formation of source of parallel light unit
Directional light is projected to being fixed on model support with the demonstration model for teaching on turn device, is taught in graphics device formation
Learn the shade of demonstrating model.
In above-mentioned multiaspect orthographic projection descriptive geometry teaching instrument, it is solid that the model support includes crossbeam, model with turn device
Determine frame, support frame, motor I, motor II, support frame as described above includes support beam, arc support, semicircle ring support, the crossbeam
Two ends are arranged on base, and the support beam is located at crossbeam top and parallel with crossbeam, and the motor I is fixedly mounted on crossbeam
Upper surface middle part, the output shaft of motor I and support beam bottom are affixed, under the drive of motor I, and crossbeam above section is in horizontal plane
Interior to be rotated centered on the output shaft of motor I, the two ends of the support beam are installed with arc support, arc support opening court
On, a semicircle ring support is respectively provided with the inside of two arc supports, the arc support is with semicircle ring support joint provided with rolling
Son, semicircle ring support can be slided on arc support, and some push rods parallel to crossbeam are provided between two semicircle ring supports,
Model fixed mount is fixedly mounted on push rod, and the demonstration model for teaching is fixed in model fixed mount, two described semicircles
In ring support, the inner ring of one of semicircle ring support is provided with internal gear, and the motor II is located at the semicircle provided with internal gear
The side of ring support, motor II is fixed on crossbeam, and the output shaft of motor II is provided with gear, and the gear is with being provided with internal gear
The internal gear of semicircle ring support be meshed, under the drive of motor II, demonstration model for teaching rotates in perpendicular.
In above-mentioned multiaspect orthographic projection descriptive geometry teaching instrument, the model fixed mount includes 12 rod members, and 12 rod members are total to
With the rectangular frame structure for constituting model fixed mount, provided with some for fixing the saturating of demonstration model for teaching in model fixed mount
Open-wire line, the rod member and push rod are made of magnetic material.
In above-mentioned multiaspect orthographic projection descriptive geometry teaching instrument, it is all provided with the upper surface of the crossbeam and the lower surface of support beam
Have and ball is provided with groove, groove.
In above-mentioned multiaspect orthographic projection descriptive geometry teaching instrument, the base is body structure, including bottom plate, right baffle-plate, the right side
Baffle plate, front apron and rear baffle.
In above-mentioned multiaspect orthographic projection descriptive geometry teaching instrument, the graphics device includes display and data-interface,
The display lower hinge on the right baffle-plate of base, the data-interface be located at base rear baffle on, data-interface with
Display is electrically connected.
In above-mentioned multiaspect orthographic projection descriptive geometry teaching instrument, the source of parallel light unit include light source support, convex lens and
Spot light, the lower hinge of the light source support is in the right shell body of base, and light source support is provided with convex lens, in convex lens
Focal point forms directional light after being provided with spot light, the light planoconvex lens that spot light is sent, and directional light is radiated at demonstration model for teaching
On, and in the shade of display formation demonstration model for teaching.
In above-mentioned multiaspect orthographic projection descriptive geometry teaching instrument, the rear baffle of the base is provided with drawer.
In above-mentioned multiaspect orthographic projection descriptive geometry teaching instrument, the demonstration model for teaching wants demo content according to teaching
Difference is made up of transparent material or non-transparent material, for the religion of lines actual situation rule in combination of entities model projection figure to be reflected
Learn demonstrating model to be made of transparent material, and continuous and discrete nontransparent painting is coated respectively with its outer wheels profile
Material, is then made for other demonstration model for teaching of non-transparent material.
The beneficial effects of the present invention are：
1st, the present invention is provided with model support and turn device, and model support includes motor I and motor II with turn device,
Under the drive of motor I, demonstration model for teaching rotates in the horizontal plane, formed the left view of demonstration model for teaching, right view and after
View, under the drive of motor II, demonstration model for teaching rotates in perpendicular, the front view of formation demonstration model for teaching,
Top and bottom perspective views, so as to realize six face orthographic projection processes of demonstration model for teaching, disclosure satisfy that the abundant content of courses
Demand, it is to avoid projection box function is single, shortcoming of very flexible；
2nd, the transparent thread for being used for fixing demonstration model for teaching is provided with model fixed mount of the invention, by changing transparent thread
Quantity a variety of demonstration model for teaching can be installed, bead is for example installed（Represent a little）, thin bar (representing line), thin plate（Represent
Face）, cylinder, the various demonstration model for teaching such as intersecting body, change and different model fixed mounts be installed in support frame
On just can demonstrate the projection process of various demonstration model for teaching, have a wide range of application；
3rd, graphics device of the invention includes display, and the projection of various teaching model can be shown using display
The X-Y scheme formed, overcomes the shortcoming that projection box is only able to display the perspective view of some demonstration model for teaching；
4th, source of parallel light unit of the invention includes convex lens and spot light, utilizes putting down that the refraction principle of convex lens is formed
Line light source is projected to demonstration model for teaching, the formed X-Y scheme of display projection, is more intuitively presenting multiaspect just
Projection theory so that multiaspect orthographic projection principle becomes more directly perceived and specific, assisted teacher can effectively give lessons, help classmate
Deeply understand the principle of orthography, gradually form from three-dimensional to two dimension, then from the mode of thinking of 2 d-to-3 d；
5th, base of the invention uses body structure, can accommodate the demonstrating model for teaching, whole mechanism can also
Fold into casing, save space-consuming, carrying gets up to be also convenient for；
6th, demonstration model for teaching of the invention can want the difference of demo content by transparent material or non-according to teaching
Bright material is made, and transparent material is used for the demonstration model for teaching of lines actual situation rule in combination of entities model projection figure to be reflected
Material is made, and continuous and discrete nontransparent coating is coated respectively with its outer wheels profile, is allowed to the projection in directional light
Under by display show projecting figure solid line and dotted line, be then made for other demonstration model for teaching of non-transparent material.
Brief description of the drawings
Structural representation when Fig. 1 folds for the present invention.
The structural representation of demonstration model for teaching is not installed when Fig. 2 is present invention expansion.
The structural representation of demonstration model for teaching is installed when Fig. 3 is present invention expansion.
Fig. 4 is the structural representation of model support and turn device in Fig. 1.
Fig. 5 is the structural representation of support frame of the present invention.
Fig. 6 is structural representation when not having a semicircle ring support in Fig. 5.
Fig. 7 is the polycrystalline substance schematic diagram of support beam in Fig. 6.
Fig. 8 is the structural representation of model fixed mount of the present invention.
Fig. 9 is the structural representation of source of parallel light unit of the present invention.
Figure 10 is Fig. 9 sectional view.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention includes source of parallel light unit 6, base 7, graphics device 8, model branch
Support and turn device 9, the graphics device 8, source of parallel light unit 6, model support and turn device 9 are installed in base
On 7, model support and turn device 9 are located between graphics device 8 and source of parallel light unit 6 and graphics device 8, flat
Line light source unit 6, model support and turn device 9 are located along the same line, and demonstration model for teaching 20 is fixedly mounted on model branch
In support and turn device 9, the directional light of the formation of source of parallel light unit 6 is to being fixed on model support and the teaching on turn device 9
Demonstrating model 20 is projected, in the shade of the formation demonstration model for teaching 20 of graphics device 8.
The base 7 is body structure, including bottom plate 7-1, right baffle-plate 7-2, right shell body 7-3, front apron 7-4 and rear baffle
7-5, the rear baffle 7-5 of the base 7, which is provided with to place in drawer 1, drawer 1, needs the teaching demonstration for teaching demonstration
Model 20.
The graphics device 8 includes display 3 and data-interface 12, and the lower hinge of display 3 is in base 7
On right baffle-plate 7-2, display 3 has a rotary freedom, and display 3 can be made to be placed in base 7；The data-interface 12
In on the rear baffle 7-5 of base 7, data-interface 12 is electrically connected with display 3, and external computer will be imparted knowledge to students by data-interface 12
Demonstrating model 20 the position graphical data transmission to display 3, throwing when showing the position of demonstration model for teaching 20 by it
Shadow figure.
As shown in figures 3 to 6, the model support and turn device 9 include crossbeam 22, model fixed mount 2, support frame 5,
Motor I 10, motor II 21, support frame as described above 5 include support beam 13, arc support 18, semicircle ring support 17, the crossbeam 22
Two ends are movably arranged on base 7, and crossbeam 22 has a rotary freedom, and whole model support can be made to be put with turn device 9
In in base 7；
The support beam 13 is located at the top of crossbeam 22 and parallel with crossbeam 22, and the motor I 10 is fixedly mounted on crossbeam 22
Upper surface middle part, the output shaft of motor I 10 is affixed by the hole 28 of the middle part of support beam 13 and support beam 13, motor I 10
Drive control be that device and central controller 30 are realized through infrared remote sensing, central controller 30 be arranged on base 7 in, center
Controller 30 receives the electric signal of infrared remote sensor, then signal is defeated by into motor I 10, it is rotated certain angle, so that
Obtaining whole support frame 5 can be rotated in the horizontal plane centered on the output shaft of motor I 10, be fixed on support frame 5
Model fixed mount 2 can also do synchronous rotary motion so that realize the left view of projection teaching's demonstrating model 20, right view and
Rearview；
The two ends of the support beam 13 are installed with arc support 18, and arc support 18 is opening up, two arc supports
18 inner sides are respectively provided with a semicircle ring support 17, and the arc support 18 is provided with roller 26, half with the joint of semicircle ring support 17
Circle ring rack 17 can be slided on arc support 18, and two push rods parallel to crossbeam 22 are provided between two semicircle ring supports 17
19, model fixed mount 2 is fixedly mounted on push rod 19, and the demonstration model for teaching 20 is fixed in model fixed mount 2；
In two described semicircle ring supports 17, the inner ring of one of semicircle ring support 17 is provided with internal gear 25, institute
The side that motor II 21 is located at the semicircle ring support 17 provided with internal gear 25 is stated, motor II 21 is fixed on crossbeam 22, motor II
21 output shaft is provided with gear 23, and the internal gear 25 of the gear 23 and the semicircle ring support 17 provided with internal gear 25 is mutually nibbled
Close, the drive control of the motor II 21 is that device and central controller 30 realize that central controller 30 connects through infrared remote sensing
By the electric signal of infrared remote sensor, then motor II 21 is transmitted a signal to, it is rotated certain angle, because motor II 21 is defeated
Gear 23 is secured on shaft, and gear 23 is engaged with the internal gear 25 of semicircle ring support 17 so that semicircle ring support 17, arc
The mechanism that support 18 and push rod 19 are constituted rotates certain angle, and this also makes the model fixed mount 2 being fixed on support frame 5 also turn
Dynamic certain angle, so as to convert the different projection angle of demonstration model for teaching 20, realizes the front view of demonstration model for teaching 20, faces upward
The projection process of view, top view.
It is provided with as shown in fig. 7, being equipped with the upper surface of the crossbeam 22 and the lower surface of support beam 13 in groove, groove
Ball 27, to reduce frictional resistance when support frame 5 is rotated.
As shown in figure 8, the model fixed mount 2 collectively forms model fixed mount 2 including 12 rod members, 14,12 rod members 14
Rectangular frame structure, provided with some Hes of horizontal transparent line 15 for being used to fix demonstration model for teaching 20 in model fixed mount 2
Vertical transparent thread 16, according to the design feature of demonstration model for teaching 20, the number of increase and decrease horizontal transparent line 15 and vertical transparent thread 16
Various demonstration model for teaching 20 can be installed by measuring, or changing its installation site；The rod member 14 and push rod 19 use magnetic
Material is made, and model fixed mount 2 can be made to be fixed on support frame 5, will not be gone out when converting the position of demonstration model for teaching 20
Now loosen, and also allow for dismantling and change model fixed mount 2.
As shown in Figure 9, Figure 10, the source of parallel light unit 6 includes light source support 11, convex lens 29 and spot light 31, institute
The lower hinge of light source support 11 is stated on the right shell body 7-3 of base 7, light source support 11 has a rotary freedom, can be by
Source of parallel light unit 6 is placed in base 7, and light source support 11 is provided with convex lens 29, and point light is provided with the focal point of convex lens 29
Source 31, according to convex lens refraction principle, forms directional light after the light planoconvex lens 29 that sends of spot light 31 of focal point, puts down
Row light irradiation forms the shade of demonstration model for teaching 20 on demonstration model for teaching 20, and in display 3.
The operation principle of the present invention is as follows：Source of parallel light unit 6 utilizes convex lens refraction principle formation directional light, Ran Hougen
The demonstration model for teaching 20 being fixed on model fixed mount 2 is projected according to orthography, teaching is formed on the display 3 and drills
The shade in some angle of representation model 20, display 3 then shows this according to the signal for the data-interface 12 being connected with computer
The perspective view of demonstration model for teaching 20 under angle.Using infrared remote sensor by the indexing signal of model support and turn device 9
Central controller 30 is transferred to, central controller 30 receives to be handled and transmitted a signal to after the electric signal of infrared remote sensor
Motor I 10 and motor II 21, when motor I 10 rotates, it becomes possible to which the left view of projection teaching's demonstrating model 20, the right side are regarded
Figure, rearview, when motor II 21 rotates, it becomes possible to the front view of projection teaching's demonstrating model 20, top view, look up
Figure, it is achieved thereby that the multiaspect orthographic projection of demonstration model for teaching 20, also intuitively shows multiaspect orthographic projection principle.Separately
Outside, a number of horizontal transparent line 15 and vertical transparent thread 16 can be installed in model for different demonstration model for teaching 20
On fixed mount 2, so as to install and fix the various demonstrating models for being used to impart knowledge to students, changing model fixed mount 2, just projectable is each
Plant the model for teaching demonstration.Just multiaspect orthographic projection principle is intuitively shown based on principles above, is easy to student to manage
Solution and grasp multiaspect orthographic projection principle.
Claims (8)
1. a kind of multiaspect orthographic projection descriptive geometry teaching instrument, including base, graphics device, source of parallel light unit, the figure
Shape display device, source of parallel light unit are installed on base, it is characterised in that：Also include model support and turn device, institute
State model support to be arranged on base with turn device, model support is located at graphics device and source of parallel light with turn device
Between unit and graphics device, source of parallel light unit, model support and turn device are located along the same line, teaching demonstration
Model is fixedly mounted on model support and turn device, the directional light of source of parallel light unit formation to be fixed on model support with
Demonstration model for teaching on turn device is projected, in the shade of graphics device formation demonstration model for teaching, the mould
Type support with turn device include crossbeam, model fixed mount, support frame, motor I, motor II, support frame as described above include support beam,
Arc support, semicircle ring support, the two ends of the crossbeam are movably arranged on base, the support beam be located at crossbeam above and with
Crossbeam is parallel, and the motor I is fixedly mounted on the upper surface middle part of crossbeam, and the output shaft of motor I and support beam bottom are affixed,
Under the drive of motor I, crossbeam above section is rotated centered on the output shaft of motor I in the horizontal plane, and the two of the support beam
End is installed with arc support, and arc support is opening up, and a semicircle ring support is respectively provided with the inside of two arc supports, described
Arc support is provided with roller with semicircle ring support joint, and semicircle ring support can be slided on arc support, two semicircular ring branch
Some push rods parallel to crossbeam are provided between frame, model fixed mount is fixedly mounted on push rod, the demonstration model for teaching
It is fixed in model fixed mount, in two described semicircle ring supports, the inner ring of one of semicircle ring support is provided with internal tooth
Wheel, the motor II is located at the side of the semicircle ring support provided with internal gear, and motor II is fixed on crossbeam, the output of motor II
Axle is provided with gear, and the gear is meshed with the internal gear of the semicircle ring support provided with internal gear, under the drive of motor II,
Demonstration model for teaching rotates in perpendicular.
2. multiaspect orthographic projection descriptive geometry teaching instrument as claimed in claim 1, it is characterised in that：The model fixed mount includes
12 rod members, 12 rod members collectively form the rectangular frame structure of model fixed mount, and model fixed mount is interior to be used for provided with some
The transparent thread of fixed demonstration model for teaching, the rod member and push rod are made of magnetic material.
3. multiaspect orthographic projection descriptive geometry teaching instrument as claimed in claim 1, it is characterised in that：The upper surface of the crossbeam and
It is equipped with the lower surface of support beam in groove, groove and is provided with ball.
4. multiaspect orthographic projection descriptive geometry teaching instrument as claimed in claim 1, it is characterised in that：The base is casing knot
Structure, including bottom plate, right baffle-plate, right shell body, front apron and rear baffle.
5. multiaspect orthographic projection descriptive geometry teaching instrument as claimed in claim 4, it is characterised in that：The graphics device bag
Display and data-interface are included, the display lower hinge is on the right baffle-plate of base, and the data-interface is located at base
On rear baffle, data-interface is electrically connected with display.
6. multiaspect orthographic projection descriptive geometry teaching instrument as claimed in claim 5, it is characterised in that：The source of parallel light unit bag
Light source support, convex lens and spot light are included, the lower hinge of the light source support is set in the right shell body of base in light source support
There are convex lens, directional light, directional light are formed after the focal point of convex lens is provided with spot light, the light planoconvex lens that spot light is sent
It is radiated on demonstration model for teaching, and in the shade of display formation demonstration model for teaching.
7. multiaspect orthographic projection descriptive geometry teaching instrument as claimed in claim 5, it is characterised in that：On the rear baffle of the base
Provided with drawer.
8. multiaspect orthographic projection descriptive geometry teaching instrument as claimed in claim 1, it is characterised in that：The demonstration model for teaching root
The difference for wanting demo content according to teaching is made up of transparent material or non-transparent material, for combination of entities model projection to be reflected
The demonstration model for teaching of lines actual situation rule is made of transparent material in figure, and is coated respectively with its outer wheels profile continuous
With discrete nontransparent coating, then it is made for other demonstration model for teaching of non-transparent material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510463924.XA CN105070153B (en) | 2015-07-31 | 2015-07-31 | A kind of multiaspect orthographic projection descriptive geometry teaching instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510463924.XA CN105070153B (en) | 2015-07-31 | 2015-07-31 | A kind of multiaspect orthographic projection descriptive geometry teaching instrument |
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| CN105070153A CN105070153A (en) | 2015-11-18 |
| CN105070153B true CN105070153B (en) | 2017-10-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106251715A (en) * | 2016-10-11 | 2016-12-21 | 东北林业大学 | A kind of Graphing of Engineering model projection apparatus for demonstrating |
| CN107622702A (en) * | 2017-10-20 | 2018-01-23 | 范益彬 | A kind of high school mathematics teaching geometric projection device |
| CN110189582B (en) * | 2019-05-31 | 2021-08-31 | 重庆工业职业技术学院 | Auxiliary teaching device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0045214A1 (en) * | 1980-07-29 | 1982-02-03 | The Open University | Drawing aid |
| DE19501043C2 (en) * | 1995-01-16 | 1998-02-19 | Dieter Niesner | Foldable corner model |
| CN201868003U (en) * | 2010-11-13 | 2011-06-15 | 侯贻新 | Solid geometry projection box |
| CN202487031U (en) * | 2012-02-15 | 2012-10-10 | 李祥军 | Projection demonstrator |
| CN204423752U (en) * | 2015-03-02 | 2015-06-24 | 赵元 | The rotary exhibiting device of mathematics education model |
| CN204423757U (en) * | 2015-02-02 | 2015-06-24 | 黑龙江工程学院 | The mathematical model device of Three dimensional rotation can be realized |
| CN204440714U (en) * | 2015-03-09 | 2015-07-01 | 温州职业技术学院 | Rotary art teaching supports Graphic Panel |
| CN104751687A (en) * | 2015-04-22 | 2015-07-01 | 梧州学院 | Mechanical drawing view projection platform device |
| CN204759840U (en) * | 2015-07-31 | 2015-11-11 | 湖南科技大学 | Multiaspect orthographic projection descriptive geometry device of imparting knowledge to students |
-
2015
- 2015-07-31 CN CN201510463924.XA patent/CN105070153B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0045214A1 (en) * | 1980-07-29 | 1982-02-03 | The Open University | Drawing aid |
| DE19501043C2 (en) * | 1995-01-16 | 1998-02-19 | Dieter Niesner | Foldable corner model |
| CN201868003U (en) * | 2010-11-13 | 2011-06-15 | 侯贻新 | Solid geometry projection box |
| CN202487031U (en) * | 2012-02-15 | 2012-10-10 | 李祥军 | Projection demonstrator |
| CN204423757U (en) * | 2015-02-02 | 2015-06-24 | 黑龙江工程学院 | The mathematical model device of Three dimensional rotation can be realized |
| CN204423752U (en) * | 2015-03-02 | 2015-06-24 | 赵元 | The rotary exhibiting device of mathematics education model |
| CN204440714U (en) * | 2015-03-09 | 2015-07-01 | 温州职业技术学院 | Rotary art teaching supports Graphic Panel |
| CN104751687A (en) * | 2015-04-22 | 2015-07-01 | 梧州学院 | Mechanical drawing view projection platform device |
| CN204759840U (en) * | 2015-07-31 | 2015-11-11 | 湖南科技大学 | Multiaspect orthographic projection descriptive geometry device of imparting knowledge to students |
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|---|---|
| CN105070153A (en) | 2015-11-18 |
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