CN103489350A - Presentation device for point, line and plane projection teaching during auxiliary drawing - Google Patents
Presentation device for point, line and plane projection teaching during auxiliary drawing Download PDFInfo
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- CN103489350A CN103489350A CN201310476722.XA CN201310476722A CN103489350A CN 103489350 A CN103489350 A CN 103489350A CN 201310476722 A CN201310476722 A CN 201310476722A CN 103489350 A CN103489350 A CN 103489350A
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Abstract
The invention relates to a presentation device for point, line and plane projection teaching during auxiliary drawing. Three projective plane devices are combined to form a three-dimensional X, Y and Z projective plane, and each projective plane device comprises magnetic spheres, a telescopic pipe, a sizing flexible pipe, projective panels, projective planes and thin lines; one sizing flexible pipe is fixed on the centers of each projective panel and each projective plane, each projective panel and each projective plane are connected with the telescopic pipe through the sizing flexible pipe, the telescopic pipe is a hollow pipe, pipe openings in two ends of the hollow pipe are respectively plugged by one magnetic sphere, and two magnetic spheres on the same flexible pipe are connected through the thin line. The presentation device has the functions of presenting a linear projection transformation, a spatial position relation between lines, projection transformation of surfaces such as triangle and quadrangle, a spatial position relation between lines and planes, and a spatial position relation between planes, thereby being capable of well linking the space and the planes together, overcoming the problems of abstraction, complex presentation, confusion and the like during teaching of descriptive geometry in universities of science and technology at present, bringing the convenience for carrying out presentation by teachers, being easily accepted by students, and being a necessary teaching aid in the universities of science and technology.
Description
Technical field
The present invention relates to a kind of projection teaching apparatus for demonstrating, particularly the apparatus for demonstrating of a kind of assisted mapping point-line-surface projection teaching.
Background technology
The most of specialty of the most of science and engineering of China universities and colleges all offers Mechanical Drawing Taught at present, yet the position relationship of the point-line-surface related in descriptive geometry is the basis of mechanical cartography, simultaneously, because most of students' space imagining ability training is less, so can feel difficulty in the process of the spatial relation of learning point-line-surface, on teaching aid market, part mechanical drawing demonstration teaching aid is arranged at present, the teaching aid of any spatial relation based on point-line-surface is less, major part is fixed, and can only simulate a certain figure.
Disclosed patent has:
1. the Three-view projection demonstration mould that the Li Ruping of electronics technology company limited of Hefei paulownia section invents, the patent No.: 201220005052.4;
2. the Multifunctional projection demonstrator that the remaining loyalty of Wenzhou City, Zhejiang Province is invented, the patent No.: 90217754.0;
3. the model of the Xu Zhangsheng of Baotou, Inner Mongolia Autonomous Region Qingshan District invention and the three-dimensional quadrants face magnetic corresponding projection demonstration teaching aid of attaching pictures, the patent No.: 93244327.3;
4. the Li Fuchang in zhuzhou, hunan province city, the combined type space geometry apparatus for demonstrating of Jiang Fengyi invention, the patent No.: 87204750;
5. the Gu Licui of Harbin, Heilongjiang Province, a kind of demonstration device of the space geometry with projecting function of Xie Guoliang invention, the patent No.: 201220487042.9;
6. the mechanical drawing descriptive geometry variable teaching aid model that the Li Junwu of Wuhan Ship Professional Tech. College, Chen Tingji etc. invent, the patent No.: 97240721.9.
Although a lot of such projection arrangements are arranged now, many devices are only to demonstrate specific point-line-surface projection, and great majority are all the light source projections of employing fluorescent tube Cheng Ying, are limited to a certain extent and be unfavorable for observation of students.
The student of mechanical and near machine class specialty will learn " descriptive geometry and mechanical drawing " course, however the projection of the point-line-surface in the cartography basis owing to relating to complicated spatial alternation, thereby become a link of many student's headaches.Although, and existing market is that the teaching aid product is more, really the projection relation of energy presentation space optional position point-line-surface is less, and most of with light Cheng Yingwei master, is not easy to observation of students.Because the spatial relation demonstration teaching aid on current teaching aid market has certain limitation, major part can only be single the spatial relation of a certain figure of demonstration, so there are the shortcomings such as waste of material and unicity, the apparatus for demonstrating of visible ray Cheng Ying has appearred adopting then, the most of light source of installing on the opposite direction on three projecting planes of such device carries out projection demonstration, then such device also exists certain defect, the i.e. shortcoming of inconvenient observation of students and power consumption.The present invention is based on this situation, design a kind of apparatus for demonstrating of auxiliary point-line-surface projection, allow the teacher can the image show projection relation to the student, student's understanding resembles from being abstracted into tool, thereby be more readily understood, so these instruments used for education will be come into the classroom of cartography and provide strong help for teachers ' teaching and Students ' Learning.
Summary of the invention
The present invention is the apparatus for demonstrating that a kind of assisted mapping point-line-surface projection teaching will be provided, allow the teacher can the image show projection relation to the student, student's understanding resembles from being abstracted into tool, thereby is more readily understood, and has the characteristics of Non-energy-consumption, simple and easy, demonstrating visual.
For achieving the above object, technical scheme of the present invention is: the apparatus for demonstrating of a kind of assisted mapping point-line-surface projection teaching, by three identical projecting plane installation compositions, three projecting plane devices are combined into three-dimensional X, Y, the Z projecting plane, be characterized in: each projecting plane device comprises the magnetic ball, draw-tube, the typing flexible pipe, projection panel and projecting plane, fine rule, a typing flexible pipe is fixed at each projection panel and center, projecting plane, and connect draw-tube by the typing flexible pipe, draw-tube is hollow tubular, the hollow tubular two ends mouth of pipe is inhaled and is blocked by a magnetic ball respectively, two magnetic balls on same draw-tube connect by fine rule.
During projection on simulation X, Y, Z face, a magnetic ball in each projecting plane device is suspended on required projecting plane and determines subpoint as the weight vertical, when two fine rules that are connected with as the magnetic ball of weight intersect, the mouth of pipe that draw-tube is pulled out at fine rule is blocked by another magnetic ball.
While not demonstrating projection, the connection fine rule of two magnetic balls closes in draw-tube.
The invention has the beneficial effects as follows:
(1) the projection demonstration device can be demonstrated independent point-line-surface projection and the projection relation between the point, line, surface combination in any simultaneously.
(2) the projection demonstration device can be demonstrated in certain limit, the point-line-surface position relationship of random length, any locus.
(3) the projection demonstration device should Non-energy-consumption, the demonstration effect is directly perceived, is convenient to observe and understand.
This apparatus for demonstrating has the functions such as spatial relation of spatial relation, face and face of projective transformation, line and face of the faces such as spatial relation, triangle and quadrilateral of demonstration linear projection conversion, line and line, thereby can better connect space and plane, overcome exist in " descriptive geometry " teaching of current science and engineering universities and colleges abstract, demonstrated the problems such as loaded down with trivial details, not directly perceived, be convenient to teacher's demonstration, being easy to the student and accepting, is the indispensable teaching aid of Science and Engineering College.The present invention is reasonable in design, simple in structure, easy to use, meets public demand, has market outlook and very high society and economic worth widely.
The advantage of the point-line-surface projection arrangement of the present invention's design has: 1. can demonstrate any point-line-surface projection and spatial relationship; 2. weight is fixed a point but not the light source projection, without camera bellows, is convenient to observe, energy-conservation easy to operate; Be convenient to the weight fixed point when 3. fixing a point to adopt strong magnet to make institute's Presentation Graphics more firm with weight.As can be seen here, for the slave side of drawing teaching, the projection arrangement of the present invention's design has the advantages such as energy-conservation, directly perceived, is easier to apply.
The apparatus for demonstrating of assisted mapping point-line-surface of the present invention projection teaching can make the teacher the space diagram projection teaching process in, vivider, presentation space On The Projection more specifically.More make student's understanding resemble from being abstracted into tool, be convenient to understand such problem.
The accompanying drawing explanation
Fig. 1 is single projecting plane of the present invention apparatus structure schematic diagram;
Fig. 2 is that the simulation straight line connects and perspective view;
Fig. 3 is the projecting plane schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1 to Figure 3, the apparatus for demonstrating of assisted mapping point-line-surface of the present invention projection teaching, by three identical projecting plane installation compositions, three projecting plane devices are combined into three-dimensional X, Y, Z projecting plane.
As shown in Figure 1, each projecting plane device comprises magnetic ball 1, draw-tube 2, typing flexible pipe 3, projection panel and projecting plane 4, fine rule 5.A typing flexible pipe 3 is fixed at each projection panel and 4 centers, projecting plane, and connect draw-tube 2 by typing flexible pipe 3, draw-tube 2 length are controlled, thereby realize fixing in the optional position, space of random length straight line in the simulation certain limit, be convenient to study it separately and with projection and the spatial relation situation of other lines or face combination.Draw-tube 2 is hollow tubular, and the hollow tubular two ends mouth of pipe is inhaled and blocked by a magnetic ball 1 respectively, and two the magnetic balls 1 on same draw-tube 2 connect by fine rule 5.While not demonstrating projection, the connection fine rule 5 of two magnetic balls 1 closes in draw-tube 2.
As shown in Figure 2, during projection on simulation X, Y, Z face, a magnetic ball 1 in each projecting plane device is suspended on required projecting plane and determines subpoint as the weight vertical, when two fine rules that are connected with as the magnetic ball 1 of weight 5 intersect, the mouth of pipe that draw-tube 2 is pulled out at fine rule 5 is blocked by another magnetic ball 1.Guaranteed the tight connection of two straight lines, thereby also blocked fine rule 5, guaranteed that magnetic ball 1 vertical hangs and can can't not tighten because of fine rule 5 is oversize.
?as shown in Figure 3, when three single projection panels and projecting plane 4 are combined into the tripleplane space, each projection panel and 4 centers, projecting plane are for installing the projector mechanism connected by typing flexible pipe 3.Thereby form tripleplane's mechanism, guarantee the point-line-surface projection of any spatial relation.In the process of carrying out projection demonstration, after fixing the shape and locus of required research projection, carry out the projection of X face on magnetic ball vertical by magnetic ball 1, now, the X face keeps flat on the ground, then need to study the projection of Y face, now do not need to change the position of demonstration by projection straight line, only the Y face need be kept flat to ground, make the Y face become the vertical vertical direction and get final product, in like manner, the projection of research Z face only need keep flat ground by the Z face, make it perpendicular to vertical, by above process, complete the projection of arbitrary graphic on three projecting planes.
Along with improving and reform of structure of education, requirement for the ability of practice improves gradually, the cultivation of the undergraduate ability of practice is particularly important, yet mechanical cartography is the basic subject of practice, it is the subject of the engineering reality that is closely connected, learning mechanical cartography well is the basis of contact engineering problem, the engineering thinking that can well cultivate us.In the learning process of mechanical cartography, the projection of point-line-surface is difficult point, the present invention's design
onethe apparatus for demonstrating of kind of assisted mapping point-line-surface projection teaching can make the teacher the space diagram projection teaching process in, vivider, presentation space On The Projection more specifically.More make student's understanding resemble from being abstracted into tool, be convenient to understand such problem.
the projection arrangement of the present invention's design is investigated by school instruction, has been subject to paying close attention to widely and praising, the present invention has simultaneously completed material object manufacture, and promotes the use of in the school at this.From the finding of later stage to the academics and students, the apparatus for demonstrating of a kind of assisted mapping point-line-surface projection teaching of the present invention design has been subject to mechanical drawing subject teacher's consistent approval and student's praise.
Current most of colleges and universities offer Mechanical Drawing Taught, the study of the projection relation of drawing course dotted line face is the difficult point of mechanical cartography, on market, existing projection changes the limitation that there are two aspects in teaching aid, the firstth, the unicity of projection, most of projection demonstration device can only be demonstrated single graphic projection, the secondth, the not intuitive of demonstration, adopt the visible ray projection because major part overcomes monistic projection arrangement, so inconvenience is observed when the presentation space projection.The present invention has well solved above problem, and relatively existing device has very large advantage.
The present invention is simple in structure, with low cost, and the scope of application is wider, has very high popularization feasibility, and market outlook are boundless.
Claims (3)
1. the apparatus for demonstrating of an assisted mapping point-line-surface projection teaching, by three identical projecting plane installation compositions, three projecting plane devices are combined into three-dimensional X, Y, the Z projecting plane, it is characterized in that: each projecting plane device comprises magnetic ball (1), draw-tube (2), typing flexible pipe (3), projection panel and projecting plane (4), fine rule (5), a typing flexible pipe (3) is fixed at each projection panel and center, projecting plane (4), and connect draw-tube (2) by typing flexible pipe (3), draw-tube (2) is hollow tubular, the hollow tubular two ends mouth of pipe is inhaled and is blocked by a magnetic ball (1) respectively, two magnetic balls (1) on same draw-tube (2) connect by fine rule (5).
2. the apparatus for demonstrating of assisted mapping point-line-surface according to claim 1 projection teaching, it is characterized in that: during projection on simulation X, Y, Z face, a magnetic ball (1) in each projecting plane device is suspended on required projecting plane and determines subpoint as the weight vertical, when two fine rules (5) that are connected with as the magnetic ball (1) of weight intersect, the mouth of pipe that draw-tube (2) is pulled out at fine rule (5) is blocked by another magnetic ball (1).
3. the apparatus for demonstrating of assisted mapping point-line-surface according to claim 1 projection teaching, it is characterized in that: while not demonstrating projection, the connection fine rule (5) of two magnetic balls (1) closes in draw-tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476722.XA CN103489350A (en) | 2013-10-14 | 2013-10-14 | Presentation device for point, line and plane projection teaching during auxiliary drawing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476722.XA CN103489350A (en) | 2013-10-14 | 2013-10-14 | Presentation device for point, line and plane projection teaching during auxiliary drawing |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2094777U (en) * | 1991-06-11 | 1992-01-29 | 温州市胜利教具厂 | Point line plane projection demonstration teaching aid |
| CN2194021Y (en) * | 1993-11-07 | 1995-04-05 | 徐长生 | Projection demonstrator |
| RU2045783C1 (en) * | 1992-05-07 | 1995-10-10 | Новосибирский государственный технический университет | Aid to demonstrate straight lines and their projections |
| CN2731615Y (en) * | 2004-07-16 | 2005-10-05 | 叶厚培 | Magnetic teaching acid for middle and primary school |
| CN2919414Y (en) * | 2006-04-05 | 2007-07-04 | 俞少聪 | Magnetism geometrical realia |
| TWM410940U (en) * | 2010-05-24 | 2011-09-01 | zhen-hui Lin | Graphics magic projection box |
-
2013
- 2013-10-14 CN CN201310476722.XA patent/CN103489350A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2094777U (en) * | 1991-06-11 | 1992-01-29 | 温州市胜利教具厂 | Point line plane projection demonstration teaching aid |
| RU2045783C1 (en) * | 1992-05-07 | 1995-10-10 | Новосибирский государственный технический университет | Aid to demonstrate straight lines and their projections |
| CN2194021Y (en) * | 1993-11-07 | 1995-04-05 | 徐长生 | Projection demonstrator |
| CN2731615Y (en) * | 2004-07-16 | 2005-10-05 | 叶厚培 | Magnetic teaching acid for middle and primary school |
| CN2919414Y (en) * | 2006-04-05 | 2007-07-04 | 俞少聪 | Magnetism geometrical realia |
| TWM410940U (en) * | 2010-05-24 | 2011-09-01 | zhen-hui Lin | Graphics magic projection box |
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Application publication date: 20140101 |