CN114446128A

CN114446128A - Teaching aid model capable of directly projecting engineering view and manufacturing method thereof

Info

Publication number: CN114446128A
Application number: CN202210131874.5A
Authority: CN
Inventors: 马春文; 杨勇勤; 丁艳
Original assignee: Liuzhou Railway Vocational Technical College
Current assignee: Liuzhou Railway Vocational Technical College
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-05-06

Abstract

The invention provides a teaching aid model capable of directly projecting a project view and a manufacturing method thereof. The invention can project correct engineering views on the orthographic projection surface under the irradiation of parallel light lines, can conveniently explain the formation of a projection method and three views, and can greatly improve the space imagination of students and understand the projection method of the engineering drawings.

Description

Teaching aid model capable of directly projecting engineering view and manufacturing method thereof

Technical Field

The invention relates to the technical field of teaching auxiliary tools, in particular to a teaching aid model capable of directly projecting a project view and a manufacturing method thereof.

Background

The existing drawing teaching aid model is mostly made of wood or plastics and the like, the drawing model can only be used for visual teaching and assists students in performing space imagination and cannot adopt parallel light for projection, or a projected view is only a contour and generally not a correct engineering view, so that the application in teaching is limited, the correct projection of the engineering view cannot be correctly displayed, and the effect of the engineering view cannot be truly and accurately displayed.

Disclosure of Invention

The invention aims to provide a teaching aid model capable of directly projecting engineering views and a manufacturing method thereof, which can directly project by adopting parallel light rays and generate real and accurate engineering views on a projection surface.

According to one object of the invention, the teaching aid model capable of directly projecting engineering views comprises a wire frame model, wherein the ridge lines of the wire frame model are made of opaque materials, and the outer surface of the wire frame model is coated with a semitransparent film.

Further, the wire frame model comprises two half-section models which are connected in a splicing mode, and the splicing positions of the two half-section models are detachably provided with opaque panels.

Further, the opaque panel is disposed in parallel with one side of the wire frame model.

Further, the wire frame model is a cuboid, a cube, a cylinder or a prism.

Further, the semitransparent film is a semitransparent plastic film or a plastic film transparent to water.

Further, the ridge of the wire frame model is made of opaque plastic or metal material.

According to another object of the invention, the invention provides a method for manufacturing a teaching aid model capable of directly projecting a project view, which comprises the following steps:

s1, manufacturing a wire frame model by using opaque plastic or metal materials;

and S2, attaching a semitransparent film on the surface of the wire frame model.

Further, the wire frame model comprises two detachable half-section models, and opaque panels are detachably arranged on the side walls, in contact with each other, of the half-section models.

Further, the wire frame model is a cuboid, a cube, a cylinder or a prism.

According to the technical scheme, the correct engineering view can be projected on the orthographic projection surface under the irradiation of the parallel light lines, the formation of a projection method and three views can be conveniently explained, and the space imagination of students and the projection method for understanding the engineering drawing can be greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a wire-frame model according to an embodiment of the present invention;

FIG. 2 is a schematic view of a wire frame model and a translucent film affixed thereto in accordance with an embodiment of the present invention;

FIG. 3 is a schematic diagram of a projection layout according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a half-section model according to an embodiment of the present invention;

in the figure, 1, a wire frame model; 2. a ridge line; 3. a translucent film; 4. a half-section model; 5. an opaque panel; 6. a projector; 7. and (6) a screen.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in figures 1 and 2 of the drawings,

the utility model provides a but teaching aid model of direct projection goes out engineering view, includes wire frame model 1, and wire frame model 1 is for making hexagonal prism wire frame model through the metallic aluminum line, and it can be understood that wire frame model 1's specific geometric structure not only limits to hexagonal prism structure, can also be cuboid, square, cylinder or prism structure. Similarly, the edge lines 2 of the wire frame model 1 can be made of not only aluminum metal wires, but also other opaque materials such as opaque plastics or metal materials.

The outer surface of the wire frame model 1 is coated with a semitransparent film 3, and the semitransparent film 3 is a semitransparent plastic film or a plastic film transparent to water. Through wire frame model 1 and the translucent film 3 in the outside, the overall structure of show model that can be fine makes things convenient for the student to observe the appearance structure of model, adopts the translucent film design, can be through adopting when parallel light shines the model, then can throw out three views of correct engineering and cross-sectional view on the orthographic projection face. The semitransparent film 3 is a semitransparent plastic film or a water-transparent plastic film, the semitransparent plastic film can transmit light, and the water-transparent plastic film can irradiate the light rays after being wetted by water when the model is irradiated by adopting parallel light.

As shown in fig. 4, in order to show the internal cross-sectional view of the model, the wire-frame model may be designed as two half-section models 4 connected to each other by splicing, and an opaque panel 5 is provided at the splice of the two half-section models 4, and the opaque panel 5 is arranged in parallel with one side surface of the wire-frame model 1. When the effect of the cross section needs to be displayed, the two half-section models 4 are disassembled, and the opaque panel 5 is adhered to the side wall of one half-section model 4 needing to be projected, so that the parallel light can be adopted to irradiate the models, and the correct cross section can be projected on the orthographic projection surface.

The manufacturing method of the teaching aid model capable of directly projecting the engineering view comprises the following steps:

s1, manufacturing a hexagonal prism wire frame model by adopting a metal aluminum wire, wherein the specific geometric structure of the wire frame model 1 is not limited to a hexagonal prism structure, but also can be a cuboid, a cube, a cylinder or a prism structure. The edge lines of the frame model can be made of metal aluminum wires and other opaque materials such as opaque plastics or metal materials;

s2, attaching a semitransparent film 3 on the surface of the wire frame model 1, wherein the semitransparent film 3 is a semitransparent plastic film or a plastic film transparent to water, the semitransparent plastic film can transmit light, and the plastic film transparent to water can irradiate light rays after being wetted by water when the model is irradiated by parallel light;

s3, in order to show the internal section of the model, the wire frame model can be designed into two half-section models 4 which are spliced and connected with each other, when the section effect is required to be shown, the two half-section models 4 are disassembled, an opaque panel 5 is adhered to the side wall of one of the half-section models which needs to be projected, namely, the model can be irradiated by parallel light, and then a correct section can be projected on the orthographic projection surface.

In use, as shown in fig. 3, the present invention positions the hexagonal prism model in front of the lens of the projector, adjusts the position and direction of the hexagonal prism model, and allows the projector 6 to generate a pure white light beam to irradiate the hexagonal prism model and generate a projection on the white screen 7, so as to project a front view, a left view or a top view of the hexagonal prism model on the screen 7. When projecting the sectional view, the two half-section models 4 will be disassembled, the opaque panel 5 is placed on the side of the half-section model 4, and the sectional view can be formed by projecting again.

The teaching model manufactured by the method can conveniently explain the formation of the projection method and the six-view, and can visually improve the spatial imagination of students and understand the projection method of the engineering drawing for the students in the formation process of the six-view and the cross-sectional view which can be operated. Meanwhile, due to the adoption of a detachable and assembled structural design method, the mechanical drawing teaching model manufactured by the invention has the characteristics of low cost and capability of combining a set of teaching aid into various models, thereby reducing the cost of the teaching aid. In addition, the weight of the teaching model can be effectively reduced by adopting the scheme of frame film pasting, and teaching demonstration is facilitated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a but teaching aid model of direct projection out engineering view which characterized in that: the wire frame model comprises a wire frame model, wherein ridge lines of the wire frame model are made of opaque materials, and the outer surface of the wire frame model is coated with a semitransparent film.

2. A teaching aid model capable of directly projecting engineering views according to claim 1, wherein: the wire frame model comprises two half-section models which are connected in a splicing mode, and the splicing positions of the half-section models are detachably provided with opaque panels.

3. A teaching aid model capable of directly projecting engineering views according to claim 2, wherein: the opaque panel is disposed in parallel with one side of the wire frame model.

4. A teaching aid model capable of directly projecting engineering views according to claim 1, wherein: the wire frame model is a cuboid, a cube, a cylinder or a prism.

5. A teaching aid model capable of directly projecting engineering views according to claim 1, wherein: the semitransparent film is a semitransparent plastic film or a plastic film transparent to water.

6. A teaching aid model capable of directly projecting engineering views according to claim 1, wherein: the ridge of the wire frame model is made of opaque plastic or metal materials.

7. A method for manufacturing a teaching aid model capable of directly projecting a project view is characterized in that: the method comprises the following steps:

8. The method for making a teaching aid model capable of directly projecting engineering views according to claim 7, wherein the method comprises the following steps: wire frame model includes two half section models of detachable, the detachable is equipped with opaque panel on the lateral wall that half section model contacted.

9. The method for making a teaching aid model capable of directly projecting engineering views according to claim 7, wherein the method comprises the following steps: the wire frame model is a cuboid, a cube, a cylinder or a prism.

10. The method for making a teaching aid model capable of directly projecting engineering views according to claim 7, wherein the method comprises the following steps: the semitransparent film is a semitransparent plastic film or a plastic film transparent to water.