Multifunctional three-side projection box and projection display method

Abstract

Disclosed are a multifunctional three-side projection box and a projection display method. The multifunctional three-side projection box consists of multiple projection sides, a top plate and a physical model. The projection side H, the projection side V and the projection W are perpendicular one another. The top plate is fixed above the projection side V and the projection side W. A projection side V1 is movable and can be fixed between the projection H and the top plate and perpendicular to the projection side H. The physical model is provided with multiple small holes used for tying hanging lines, and the hanging lines are fixed on the top plate through plugs. By adjusting the number and the length of the hanging lines on the physical model and the positions on the top plate of the hanging lines and observing the physical model from the direction perpendicular to the projection sides, linear and planar projections of different positions of the projection sides and three-side projection of a body can be displayed, and the right-angled projection principle, straight lines of special positions on a general position plane and projection relations of the surface changing method can be displayed. The multifunctional three-side projection box can fully display projection, is convenient to use and capable of helping students learn projection relations in geometric drawing classes.

Description

technical field [0001] The invention relates to the field of teaching aids for assisting the learning of projection relations in descriptive geometry courses. Background technique [0002] At present, many engineering majors offer descriptive geometry courses. Due to the need for strong spatial imagery, many students cannot understand the three-plane projection relationship well, and it is difficult to establish the ability to transform thinking from spatial shapes to plane graphics. Axonometric projection diagrams, physical teaching models, etc. assist in explaining the three-plane projection relationship. However, these methods require students to have strong spatial imagination ability to understand. Therefore, a teaching aid and corresponding teaching aids that can better reflect the multi-plane projection relationship are needed The projection display method helps students learn the projection relationship in descriptive geometry. Contents of the invention [0003] I...

AI Technical Summary

Problems solved by technology

[0002] At present, many engineering majors offer descriptive geometry courses. Due to the need for strong spatial imagery, many students cannot understand the three-plane projection relationship well, and it is difficult to establish the ability to transform thinking from spatial shapes to plane graphics. Axonometric projection diagrams, physical teaching models, etc. assist in explaining the three-plane projection relationship. However, these methods require students to have strong spatial imagination ability to understand. Therefore, a teaching aid and corresponding teaching aids that can better reflect the multi-plane projection relationship are needed The projective display method to assist students in learning the projective relationship in descriptive geometry

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