CN105070153A - Multi-surface orthographic projection drawing geometry teaching instrument - Google Patents
Multi-surface orthographic projection drawing geometry teaching instrument Download PDFInfo
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- CN105070153A CN105070153A CN201510463924.XA CN201510463924A CN105070153A CN 105070153 A CN105070153 A CN 105070153A CN 201510463924 A CN201510463924 A CN 201510463924A CN 105070153 A CN105070153 A CN 105070153A
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Abstract
A multi-surface orthographic projection drawing geometry teaching instrument disclosed by the present invention comprises a pedestal, a figure display device and a parallel light source unit, and the figure display device and the parallel light source unit are both arranged on the pedestal. The multi-surface orthographic projection drawing geometry teaching instrument also comprises a model supporting and transposition device, and the model supporting and transposition device is arranged on the pedestal and is located between the figure display device and the parallel light source unit. The figure display device, the parallel light source unit and the model supporting and transposition device are located in a same straight line, and a teaching demonstration model is fixedly arranged on the model supporting and transposition device. The multi-surface orthographic projection drawing geometry teaching instrument of the present invention is equipped with the model supporting and transposition device, and under the driving of a motor I and a motor II of the model supporting and transposition device, the teaching demonstration model rotates in a horizontal plane and vertical plane separately to form the six views of the teaching demonstration model, thereby realizing the six-surface orthographic projection process of the teaching demonstration model, being able to satisfy the abundant teaching content demands, and avoiding the disadvantages that a projection box is single in function and poor in flexibility.
Description
Technical field
The present invention relates to a kind of instruments used for education, particularly a kind of multiaspect orthogonal projection descriptive geometry teaching instrument.
Background technology
Descriptive geometry is three-dimensional geometric configuration and orientation problem are expressed in research subject with X-Y scheme.In engineering design, manufacture, the main channel of information interchange is " figure ", and descriptive geometry is the theoretical foundation that the science that provides expressed by pattern.Orthography in sciagraphy is owing to can react the real shape of object and size, so apply widely in engineering, but the ultimate principle of orthography is abstract, stronger space imagining ability and spatial thinking ability is needed could fundamentally to grasp this principle, and be applied in engineering reality, therefore just arise at the historic moment at the aided education apparatus of teaching process for ocular demonstration orthography.
Projection box in tradition descriptive geometry teaching apparatus can show the planar graph of naive model at upright projection face (V), horizontal plane (H), edge-on projecting plane (W), but each projection box is merely able to display model, function singleness, and dirigibility is poor, be not suitable for Multipurpose teaching.Also have the three-dimensional entity model teaching aid of detachable multiple combination mode in addition, but it can not demonstrate projection process and projection theory, just one builds on the direct feel of 3D solid.Therefore, how to overcome these shortcomings, exploitation has multi-functional, that applicability is strong descriptive geometry teaching aid just becomes problem in the urgent need to address at present.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of structure simple, the forming process of point, line, surface in orthography can not only be demonstrated, and the multiaspect orthogonal projection descriptive geometry teaching instrument of various three-dimensional entity model perspective view forming process can be demonstrated.
The technical scheme that the present invention solves the problem is: a kind of multiaspect orthogonal projection descriptive geometry teaching instrument, comprise base, graphics device, source of parallel light unit, described graphics device, source of parallel light unit is installed on base, also comprise model support and turn device, described model support and turn device are arranged on base, model support and turn device are 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 is fixedly mounted on model support and turn device, the directional light that source of parallel light unit is formed projects the demonstration model for teaching be fixed on model support and turn device, the shade of demonstration model for teaching is formed at graphics device.
In above-mentioned multiaspect orthogonal projection descriptive geometry teaching instrument, described model support and turn device comprise crossbeam, model fixed mount, bracing frame, motor I, motor II, support frame as described above comprises brace summer, arc support, semicircular ring support, the two ends of described crossbeam are arranged on base, described brace summer to be positioned at above crossbeam and parallel with crossbeam, described motor I is fixedly mounted on the upper surface middle part of crossbeam, output shaft and the brace summer bottom of motor I are affixed, under the drive of motor I, crossbeam rotates in surface level by upper part centered by the output shaft of motor I, the two ends of described brace summer are all installed with arc support, arc support is opening up, a semicircular ring support is respectively provided with inside two arc supports, described arc support and semicircular ring support joint are provided with roller, semicircular ring support can slide on arc support, the push rod that some are parallel to crossbeam is provided with between two semicircular ring supports, model fixed mount is fixedly mounted on push rod, described demonstration model for teaching is fixed in model fixed mount, in two described semicircular ring supports, the inner ring of one of them semicircular ring support is provided with annular wheel, described motor II is positioned at the side of the semicircular ring support being provided with annular wheel, motor II is fixed on crossbeam, the output shaft of motor II is provided with gear, described gear is meshed with the annular wheel of the semicircular ring support being provided with annular wheel, under the drive of motor II, demonstration model for teaching rotates in perpendicular.
In above-mentioned multiaspect orthogonal projection descriptive geometry teaching instrument, described model fixed mount comprises 12 rod members, the rectangular frame structure of 12 common component model fixed mounts of rod member, be provided with the some transparent threads for fixing demonstration model for teaching in model fixed mount, described rod member and push rod all adopt magnetic material to make.
In above-mentioned multiaspect orthogonal projection descriptive geometry teaching instrument, the upper surface of described crossbeam and the lower surface of brace summer are equipped with groove, in groove, are provided with ball.
In above-mentioned multiaspect orthogonal projection descriptive geometry teaching instrument, described base is body structure, comprises base plate, right baffle-plate, right baffle plate, front apron and backboard.
In above-mentioned multiaspect orthogonal projection descriptive geometry teaching instrument, described graphics device comprises display and data-interface, and described display lower hinge is on the right baffle-plate of base, and described data-interface is positioned on the backboard of base, and data-interface is electrically connected with display.
In above-mentioned multiaspect orthogonal projection descriptive geometry teaching instrument, described source of parallel light unit comprises light source support, convex lens and pointolite, the lower hinge of described light source support is on the right baffle plate of base, light source support is provided with convex lens, pointolite is provided with at the focus place of convex lens, form directional light after the light planoconvex lens that pointolite sends, directional light is radiated on demonstration model for teaching, and forms the shade of demonstration model for teaching at display.
In above-mentioned multiaspect orthogonal projection descriptive geometry teaching instrument, the backboard of described base is provided with drawer.
In above-mentioned multiaspect orthogonal projection descriptive geometry teaching instrument, described demonstration model for teaching according to teaching want the difference of demo content to be made up of transparent material or non-transparent material, for reflecting that the demonstration model for teaching of lines actual situation rule in combination of entities model projection figure adopts transparent material to make, and its outer wheels profile scribbles respectively continuous and discrete nontransparent coating, the demonstration model for teaching for other is then made by non-transparent material.
Beneficial effect of the present invention is:
1, the present invention is provided with model support and turn device, model support and turn device comprise motor I and motor II, under the drive of motor I, demonstration model for teaching rotates in surface level, form the left view of demonstration model for teaching, right view and rear view, under the drive of motor II, demonstration model for teaching rotates in perpendicular, form the front elevation of demonstration model for teaching, top and bottom perspective views, thus realize six orthogonal projection processes of demonstration model for teaching, the demand of the abundant content of courses can be met, avoid projection box function singleness, the shortcoming of very flexible,
2, the transparent thread for fixing demonstration model for teaching is provided with in model fixed mount of the present invention, by the quantity changing transparent thread, multiple demonstration model for teaching can be installed, the various demonstration model for teachings such as bead (representative point), thin bar (representing line), thin plate (representing face), right cylinder, intersecting body are such as installed, change and the projection process that different model fixed mounts just can demonstrate various demonstration model for teaching on bracing frame be installed, applied range;
3, graphics device of the present invention comprises display, the X-Y scheme that the projection utilizing display can show various teaching model is formed, and overcomes the shortcoming that projection box can only show the perspective view of some demonstration model for teachings;
4, source of parallel light unit of the present invention comprises convex lens and pointolite, the source of parallel light utilizing the refraction principle of convex lens to be formed projects demonstration model for teaching, the X-Y scheme that display projection is formed, present multiaspect orthogonal projection principle more intuitively, make multiaspect orthogonal projection principle become more directly perceived and concrete, effectively assisted teacher can give lessons, help classmates deeply to understand orthogonal projection ratio juris, formed from three-dimensional to two dimension gradually, then from the mode of thinking of 2 d-to-3 d;
5, base of the present invention adopts body structure, and can hold the demonstrating model for imparting knowledge to students, whole mechanism also can fold in casing, saves and takes up room, and carries and also facilitates;
6, demonstration model for teaching of the present invention can according to teaching want the difference of demo content to be made up of transparent material or non-transparent material, for reflecting that the demonstration model for teaching of lines actual situation rule in combination of entities model projection figure adopts transparent material to make, and its outer wheels profile scribbles respectively continuous and discrete nontransparent coating, make it under the projection of directional light, shown projecting figure by display solid line and dotted line, the demonstration model for teaching for other is then made by non-transparent material.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention when folding.
Fig. 2 is the structural representation that the present invention does not install demonstration model for teaching when launching.
Fig. 3 is the structural representation that the present invention installs demonstration model for teaching when launching.
Fig. 4 is the structural representation of model support and turn device in Fig. 1.
Fig. 5 is the structural representation of bracing frame of the present invention.
Fig. 6 is structural representation when not having semicircular ring support in Fig. 5.
Fig. 7 is the polycrystalline substance schematic diagram of brace summer 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 the cut-open view of Fig. 9.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As Fig. 1, Fig. 2, shown in Fig. 3, the present invention includes source of parallel light unit 6, base 7, graphics device 8, model support and turn device 9, described graphics device 8, source of parallel light unit 6, model support and turn device 9 are installed on base 7, model support and turn device 9 are between graphics device 8 and source of parallel light unit 6 and graphics device 8, source of parallel light unit 6, model support and turn device 9 are located along the same line, demonstration model for teaching 20 is fixedly mounted on model support and turn device 9, the directional light that source of parallel light unit 6 is formed projects the demonstration model for teaching 20 be fixed on model support and turn device 9, the shade of demonstration model for teaching 20 is formed at graphics device 8.
Described base 7 is body structure, and comprise base plate 7-1, right baffle-plate 7-2, right baffle plate 7-3, front apron 7-4 and backboard 7-5, the backboard 7-5 of described base 7 is provided with drawer 1, can place the demonstration model for teaching 20 needed for teaching demonstration in drawer 1.
Described graphics device 8 comprises display 3 and data-interface 12, and described display 3 lower hinge is on the right baffle-plate 7-2 of base 7, and display 3 has a rotary freedom, and display 3 can be made to be placed in base 7; Described data-interface 12 is positioned on the backboard 7-5 of base 7, data-interface 12 is electrically connected with display 3, external computer by data-interface 12 by the graphical data transmission of demonstration model for teaching 20 in this position to display 3, by projecting figure during its display this position of demonstration model for teaching 20.
As shown in figures 3 to 6, described model support and turn device 9 comprise crossbeam 22, model fixed mount 2, bracing frame 5, motor I 10, motor II 21, support frame as described above 5 comprises brace summer 13, arc support 18, semicircular ring support 17, the two ends of described crossbeam 22 are movably arranged on base 7, crossbeam 22 has a rotary freedom, and whole model support and turn device 9 can be made to be placed in base 7;
Described brace summer 13 to be positioned at above crossbeam 22 and parallel with crossbeam 22, described motor I 10 is fixedly mounted on the upper surface middle part of crossbeam 22, the output shaft of motor I 10 is affixed with brace summer 13 by the hole 28 of brace summer 13 middle part, the drived control of motor I 10 is that device and central controller 30 realize through infrared remote sensing, central controller 30 is arranged in base 7, central controller 30 accepts the electric signal of infrared remote sensor, again signal is defeated by motor I 10, it is made to rotate certain angle, thus whole bracing frame 5 can be rotated in the horizontal plane centered by the output shaft of motor I 10, the model fixed mount 2 be fixed on bracing frame 5 also can do synchronous rotary motion, thus realize the left view of projection teaching's demonstrating model 20, right view and rear view,
The two ends of described brace summer 13 are all installed with arc support 18, arc support 18 is opening up, a semicircular ring support 17 is respectively provided with inside two arc supports 18, described arc support 18 is provided with roller 26 with semicircular ring support 17 joint, semicircular ring support 17 can slide on arc support 18, be provided with the push rod 19 that two are parallel to crossbeam 22 between two semicircular ring supports 17, model fixed mount 2 is fixedly mounted on push rod 19, and described demonstration model for teaching 20 is fixed in model fixed mount 2;
In two described semicircular ring supports 17, the inner ring of one of them semicircular ring support 17 is provided with annular wheel 25, described motor II 21 is positioned at the side of the semicircular ring support 17 being provided with annular wheel 25, motor II 21 is fixed on crossbeam 22, the output shaft of motor II 21 is provided with gear 23, described gear 23 is meshed with the annular wheel 25 of the semicircular ring support 17 being provided with annular wheel 25, the drived control of described motor II 21 is that device and central controller 30 realize through infrared remote sensing, central controller 30 accepts the electric signal of infrared remote sensor, again by Signal transmissions to motor II 21, it is made to rotate certain angle, due to motor II 21 output shaft securing gear 23, and gear 23 engages with the annular wheel 25 of semicircular ring support 17, make semicircular ring support 17, the mechanism that arc support 18 and push rod 19 form rotates certain angle, this also makes the model fixed mount 2 be fixed on bracing frame 5 also turn an angle, thus the projection angle that conversion demonstration model for teaching 20 is different, realize the front elevation of demonstration model for teaching 20, upward view, the projection process of vertical view.
As shown in Figure 7, the upper surface of described crossbeam 22 and the lower surface of brace summer 13 are equipped with groove, in groove, are provided with ball 27, to reduce frictional resistance when bracing frame 5 rotates.
As shown in Figure 8, described model fixed mount 2 comprises 12 rod members 14, the rectangular frame structure of 12 common component model fixed mounts 2 of rod member 14, the some horizontal transparent lines 15 for fixing demonstration model for teaching 20 and vertical transparent thread 16 is provided with in model fixed mount 2, according to the design feature of demonstration model for teaching 20, the quantity of increase and decrease horizontal transparent line 15 and vertical transparent thread 16, or change its installation site various demonstration model for teaching 20 can be installed; Described rod member 14 and push rod 19 all adopt magnetic material to make, and model fixed mount 2 can be made to be fixed on bracing frame 5, there will not be loosening when converting the position of demonstration model for teaching 20, and are also convenient to dismounting and change model fixed mount 2.
As Fig. 9, shown in Figure 10, described source of parallel light unit 6 comprises light source support 11, convex lens 29 and pointolite 31, the lower hinge of described light source support 11 is on the right baffle plate 7-3 of base 7, light source support 11 has a rotary freedom, can source of parallel light unit 6 be placed in base 7, light source support 11 is provided with convex lens 29, pointolite 31 is provided with at the focus place of convex lens 29, according to convex lens refraction principle, directional light is formed after the light planoconvex lens 29 that the pointolite 31 being positioned at focus place sends, directional light is radiated on demonstration model for teaching 20, and the shade of demonstration model for teaching 20 is formed at display 3.
Principle of work of the present invention is as follows: source of parallel light unit 6 utilizes convex lens refraction principle to form directional light, then according to orthography, the demonstration model for teaching 20 be fixed on model fixed mount 2 is projected, on the display 3 formed demonstration model for teaching 20 certain angle shade, the perspective view of demonstration model for teaching 20 under this angle of Signal aspects of the data-interface 12 that display 3 bases are connected with computer.Utilize infrared remote sensor that the indexing signal of model support and turn device 9 is transferred to central controller 30, central controller 30 accept infrared remote sensor the laggard row relax of electric signal and by Signal transmissions to motor I 10 and motor II 21, when motor I 10 rotates, just can the left view of projection teaching's demonstrating model 20, right view, rear view, when motor II 21 rotates, just can the front elevation of projection teaching's demonstrating model 20, vertical view, upward view, thus achieve the multiaspect orthogonal projection of demonstration model for teaching 20, also multiaspect orthogonal projection principle is shown intuitively.In addition, the horizontal transparent line 15 of some and vertical transparent thread 16 can be installed on model fixed mount 2 for different demonstration model for teachings 20, thus can install and fix the various demonstrating model for imparting knowledge to students, change the model fixed mount 2 just various model for teaching demonstration of projectable.Just multiaspect orthogonal projection principle is shown intuitively based on above principle, be convenient to student and understand and grasp multiaspect orthogonal projection principle.
Claims (9)
1. a multiaspect orthogonal projection descriptive geometry teaching instrument, comprise base, graphics device, source of parallel light unit, described graphics device, source of parallel light unit is installed on base, it is characterized in that: also comprise model support and turn device, described model support and turn device are arranged on base, model support and turn device are 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 is fixedly mounted on model support and turn device, the directional light that source of parallel light unit is formed projects the demonstration model for teaching be fixed on model support and turn device, the shade of demonstration model for teaching is formed at graphics device.
2. multiaspect orthogonal projection descriptive geometry teaching instrument as claimed in claim 1, it is characterized in that: described model support and turn device comprise crossbeam, model fixed mount, bracing frame, motor I, motor II, support frame as described above comprises brace summer, arc support, semicircular ring support, the two ends of described crossbeam are movably arranged on base, described brace summer to be positioned at above crossbeam and parallel with crossbeam, described motor I is fixedly mounted on the upper surface middle part of crossbeam, output shaft and the brace summer bottom of motor I are affixed, under the drive of motor I, crossbeam rotates in surface level by upper part centered by the output shaft of motor I, the two ends of described brace summer are all installed with arc support, arc support is opening up, a semicircular ring support is respectively provided with inside two arc supports, described arc support and semicircular ring support joint are provided with roller, semicircular ring support can slide on arc support, the push rod that some are parallel to crossbeam is provided with between two semicircular ring supports, model fixed mount is fixedly mounted on push rod, described demonstration model for teaching is fixed in model fixed mount, in two described semicircular ring supports, the inner ring of one of them semicircular ring support is provided with annular wheel, described motor II is positioned at the side of the semicircular ring support being provided with annular wheel, motor II is fixed on crossbeam, the output shaft of motor II is provided with gear, described gear is meshed with the annular wheel of the semicircular ring support being provided with annular wheel, under the drive of motor II, demonstration model for teaching rotates in perpendicular.
3. multiaspect orthogonal projection descriptive geometry teaching instrument as claimed in claim 2, it is characterized in that: described model fixed mount comprises 12 rod members, the rectangular frame structure of 12 common component model fixed mounts of rod member, be provided with the some transparent threads for fixing demonstration model for teaching in model fixed mount, described rod member and push rod all adopt magnetic material to make.
4. multiaspect orthogonal projection descriptive geometry teaching instrument as claimed in claim 2, is characterized in that: the upper surface of described crossbeam and the lower surface of brace summer are equipped with groove, are provided with ball in groove.
5. multiaspect orthogonal projection descriptive geometry teaching instrument as claimed in claim 2, is characterized in that: described base is body structure, comprises base plate, right baffle-plate, right baffle plate, front apron and backboard.
6. multiaspect orthogonal projection descriptive geometry teaching instrument as claimed in claim 5, it is characterized in that: described graphics device comprises display and data-interface, described display lower hinge is on the right baffle-plate of base, described data-interface is positioned on the backboard of base, and data-interface is electrically connected with display.
7. multiaspect orthogonal projection descriptive geometry teaching instrument as claimed in claim 6, it is characterized in that: described source of parallel light unit comprises light source support, convex lens and pointolite, the lower hinge of described light source support is on the right baffle plate of base, light source support is provided with convex lens, pointolite is provided with at the focus place of convex lens, form directional light after the light planoconvex lens that pointolite sends, directional light is radiated on demonstration model for teaching, and forms the shade of demonstration model for teaching at display.
8. multiaspect orthogonal projection descriptive geometry teaching instrument as claimed in claim 6, is characterized in that: the backboard of described base is provided with drawer.
9. multiaspect orthogonal projection descriptive geometry teaching instrument as claimed in claim 1, it is characterized in that: described demonstration model for teaching according to teaching want the difference of demo content to be made up of transparent material or non-transparent material, for reflecting that the demonstration model for teaching of lines actual situation rule in combination of entities model projection figure adopts transparent material to make, and its outer wheels profile scribbles respectively continuous and discrete nontransparent coating, the demonstration model for teaching for other is then made by non-transparent material.
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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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| CN201510463924.XA CN105070153B (en) | 2015-07-31 | 2015-07-31 | A kind of multiaspect orthographic projection descriptive geometry teaching instrument |
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| CN107622702A (en) * | 2017-10-20 | 2018-01-23 | 范益彬 | A kind of high school mathematics teaching geometric projection device |
| CN110189582A (en) * | 2019-05-31 | 2019-08-30 | 重庆工业职业技术学院 | A kind of auxiliary teaching device |
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