Shearing experiment teaching aid for oral cavity material mechanics teaching

Abstract

The utility model discloses a shearing experiment teaching aid for oral cavity material mechanics teaching. The shearing experiment teaching aid comprises an L-shaped loading base and a test piece, a mounting hole is formed in the inner side of the loading base, the test piece comprises a large test piece and a small test piece which are adsorbed together, and the large test piece is arranged in the mounting hole. According to the shearing experiment teaching aid for oral cavity material mechanics teaching, based on the magnetic adsorption principle, the large test piece and the small test piece which are adsorbed together are separated through force application of the mechanical induction loading head, so that the magnitude of shearing force is demonstrated and measured, and oral cavity material mechanics teaching for students is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of teaching experimental teaching aids, and relates to a shearing experimental teaching aid for teaching oral material mechanics. Background Art

[0002] "Shear" refers to the relative displacement and deformation of the cross section of a material along the direction of the external force (i.e., the force perpendicular to the surface of action) under the action of a pair of closely spaced, equal-sized, and oppositely directed lateral external forces. When a composite structural material is subjected to shear force, different layers of the material will move relative to each other, resulting in material faults and structural failure.

[0003] There are many applications of composite materials in the field of stomatology. Composite materials have bonding interfaces, and the shear strength of the bonding interface is closely related to the service life of the material. Therefore, in the process of teaching dental materials, the study of material shear force is also involved. At present, the teaching of shear force is mainly based on theoretical teaching, and there are few actual related experiments. Students' understanding of shear force is relatively abstract, which is not convenient for deepening learning, and the teaching seems to be relatively abstract. Utility Model Content

[0004] The utility model aims to provide a shearing experiment teaching aid for teaching oral material mechanics. Based on the principle of magnetic adsorption, a large test piece and a small test piece adsorbed together are separated by applying force through a mechanical induction loading head, thereby demonstrating the measurement of shear force and facilitating oral material teaching for students.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a shear experiment teaching aid for teaching oral material mechanics, including an L-shaped loading base and a test piece; a mounting hole is provided on the inner side of the loading base, and the test piece includes a large test piece and a small test piece adsorbed together, and the large test piece is arranged in the mounting hole.

[0006] As a preferred technical solution of the utility model, the large test piece and the small test piece are adsorbed together by horizontal magnetic force.

[0007] As a preferred technical solution of the utility model, the large test piece and the small test piece are both rectangular.

[0008] As a preferred technical solution of the utility model, the bottoms of the large test piece and the small test piece are flush.

[0009] As a preferred technical solution of the utility model, a screw hole is provided on the top of the loading base, a positioning nut is provided in the screw hole, and the lower end of the positioning nut can extend into the mounting hole.

[0010] The beneficial effects of the utility model are as follows: the utility model is a shearing experiment teaching aid for teaching oral material mechanics, the test piece is composed of two parts, the two parts are combined according to magnetic adsorption, and the shear force can be simulated by adjusting the magnetic adsorption force. The mechanical induction loading head can load the test piece mechanically and measure the shear force; through the use of the shearing experiment teaching aid, the oral material science experimental teaching is enriched, the model teaching aid can be used repeatedly, the waste of experimental materials is reduced, and the students can visualize the abstract knowledge of material mechanics, making the oral material science teaching easy to understand, vivid and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0012] Figure 1 It is a structural schematic diagram of a shearing experiment teaching aid for teaching oral material mechanics of the utility model;

[0013] Figure 2 It is a structural schematic diagram of a loading base in a shearing experiment teaching aid for teaching oral material mechanics of the utility model;

[0014] Figure 3 The utility model is a structural schematic diagram of a test piece in a shearing experiment teaching aid for teaching oral material mechanics.

[0015] In the figure: 1. Loading base, 2. Positioning nut, 3. Large specimen, 4. Mechanical induction loading head, 5. Small specimen, 6. Mounting hole. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0017] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0018] Example 1

[0019] The utility model discloses a shearing experiment teaching aid for oral material mechanics teaching, which comprises an L-shaped loading base 1 and a test piece.

[0020] like Figure 2As shown, a mounting hole 6 is provided on the inner side of the loading base 1 .

[0021] Combination Figure 3 The test piece includes a large test piece 3 and a small test piece 5 adsorbed together, and the large test piece 3 is placed in the mounting hole 6.

[0022] The small specimen 5 and the large specimen 3 are adsorbed together by magnetic force. When working, select the appropriate small specimen 5 and large specimen 3 to adsorb the two together, and record the magnetic adsorption force. Then fix the large specimen 3 in the mounting hole inside the loading base 1. During the experiment, use the mechanical sensing recording head 4 to apply force to the small specimen 5 from above the small specimen 3. When the small specimen 5 moves downward on the large specimen 3, record the force applied by the mechanical sensing recording head 4, which is the shear force between the small specimen 5 and the large specimen 3.

[0023] Obviously, the principle of the shearing experiment teaching aid for teaching oral material mechanics of the utility model is to divide the test piece into two parts, and the two parts are combined according to magnetic adsorption, and the shear force can be simulated by adjusting the magnetic adsorption force. The mechanical induction loading head 4 can load the test piece mechanically and measure the shear force; through the use of the shearing experiment teaching aid, the experimental teaching of oral materials is enriched, the model teaching aid can be used repeatedly, and the waste of experimental materials is reduced, so that students can visualize the abstract knowledge of material mechanics, making the teaching of oral materials easy to understand, vivid and efficient.

[0024] Example 2

[0025] like Figure 1 As shown, similar to the first embodiment, in the second embodiment, the shearing experiment teaching aid for teaching oral material mechanics of the present invention comprises an L-shaped loading base 1 and a test piece. Figure 2 As shown, a mounting hole 6 is provided on the inner side of the loading base 1. Figure 3 , the test piece includes a large specimen 3 and a small specimen 5 adsorbed together, and the large specimen 3 is placed in the mounting hole 6. The small specimen 5 and the large specimen 3 are adsorbed together by magnetic force. When working, select the appropriate small specimen 5 and large specimen 3 to adsorb the two together, and record the magnetic adsorption force. Then fix the large specimen 3 in the mounting hole on the inner side of the loading base 1. During the experiment, use the mechanical sensing recording head 4 to apply force to the small specimen 5 from above the small specimen 3. When the small specimen 5 moves downward on the large specimen 3, record the force applied by the mechanical sensing recording head 4, which is the shear force between the small specimen 5 and the large specimen 3.

[0026] Different from Example 1, in Example 2 of the utility model, the shear experiment teaching aids for teaching oral material mechanics of the utility model, the large specimen and the small specimen used are both rectangular, the purpose of which is to facilitate magnetic adsorption, and the bottoms of the large specimen 3 and the small specimen 5 are flush, which is convenient for observing whether movement occurs during the experiment and reducing errors.

[0027] Obviously, the principle of the shearing experiment teaching aid for teaching oral material mechanics of the utility model is to divide the test piece into two parts, and the two parts are combined according to magnetic adsorption, and the shear force can be simulated by adjusting the magnetic adsorption force. The mechanical induction loading head 4 can load the test piece mechanically and measure the shear force; through the use of the shearing experiment teaching aid, the experimental teaching of oral materials is enriched, the model teaching aid can be used repeatedly, and the waste of experimental materials is reduced, so that students can visualize the abstract knowledge of material mechanics, making the teaching of oral materials easy to understand, vivid and efficient.

[0028] Example 3

[0029] like Figure 1 As shown, similar to Example 2, in Example 3, the shearing experiment teaching aid for teaching oral material mechanics of the utility model comprises an L-shaped loading base 1 and a test piece. Figure 2 As shown, a mounting hole 6 is provided on the inner side of the loading base 1. Figure 3 The test piece includes a large specimen 3 and a small specimen 5 adsorbed together, and the large specimen 3 is placed in the mounting hole 6. The small specimen 5 and the large specimen 3 are adsorbed together by magnetic force. When working, select the appropriate small specimen 5 and large specimen 3 to adsorb the two together, and record the magnetic adsorption force. Then fix the large specimen 3 in the mounting hole on the inner side of the loading base 1. During the experiment, a mechanical sensing recording head 4 is used to apply force to the small specimen 5 from above the small specimen 3. When the small specimen 5 moves downward on the large specimen 3, the force applied by the mechanical sensing recording head 4 is recorded. At this time, it is the shear force between the small specimen 5 and the large specimen 3. The large and small specimens used are both rectangular, and the purpose is to facilitate magnetic adsorption. The bottoms of the large specimen 3 and the small specimen 5 are flush, which is convenient for observation of whether movement occurs during the experiment to reduce errors.

[0030] like Figure 2As shown, different from Example 2, in Example 3, the shear experiment teaching aid for teaching oral material mechanics of the utility model is provided with a screw hole on the top of the loading base 1, and the inner thread of the screw hole is equipped with a positioning nut 2. After the large specimen 3 is placed in the mounting hole 6, the positioning nut 2 is selected into the screw hole. As the positioning nut 2 is inserted, its lower end extends into the mounting hole and contacts with the upper end of the large specimen 3, fixing the large specimen 3 in the mounting hole, thereby avoiding shaking caused by unstable installation of the large specimen 3 during the process of the mechanical sensing recording head 4 applying force to the small specimen 5, thereby affecting the normal progress of the experiment.

[0031] Obviously, the principle of the shearing experiment teaching aid for teaching oral material mechanics of the utility model is to divide the test piece into two parts, and the two parts are combined according to magnetic adsorption, and the shear force can be simulated by adjusting the magnetic adsorption force. The mechanical induction loading head 4 can load the test piece mechanically and measure the shear force; through the use of the shearing experiment teaching aid, the experimental teaching of oral materials is enriched, the model teaching aid can be used repeatedly, and the waste of experimental materials is reduced, so that students can visualize the abstract knowledge of material mechanics, making the teaching of oral materials easy to understand, vivid and efficient.

[0032] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall be within the scope of protection of the claims attached to the utility model without departing from the spirit and scope of the utility model.

Claims

1. A shearing experiment teaching aid for teaching oral material mechanics, characterized in that: It comprises an L-shaped loading base and a test piece; a mounting hole is arranged on the inner side of the loading base, and the test piece comprises a large test piece and a small test piece adsorbed together, and the large test piece is arranged in the mounting hole.

2. The shearing experiment teaching aid for teaching oral material mechanics according to claim 1, characterized in that: The large test piece and the small test piece are adsorbed together by horizontal magnetic force.

3. The shearing experiment teaching aid for teaching oral material mechanics according to claim 2, characterized in that: The large test piece and the small test piece are both rectangular.

4. The shearing experiment teaching aid for teaching oral material mechanics according to claim 3, characterized in that: The bottoms of the large test piece and the small test piece are flush.

5. The shearing experiment teaching aid for teaching oral material mechanics according to claim 4, characterized in that: A screw hole is arranged on the top of the loading base, a positioning nut is arranged in the screw hole, and the lower end of the positioning nut can extend into the mounting hole.

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