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Method for supporting-free 3D printing of three-dimensional negative Poisson's ratio structure
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A negative Poisson's ratio, 3D printing technology, applied in the field of 3D printing, can solve problems such as the limitation of the selection of large raw materials, and the impact of negative Poisson's ratio materials in different application scenarios.
Active Publication Date: 2021-05-18
重庆纳研新材料科技有限公司
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[0005] In view of this, the present invention provides an unsupported 3D printing three-dimensional negative Poisson’s ratio material in order to solve the problem that the conventional 3D printing manufacturing negative Poisson’s ratio material has great restrictions on the selection of raw materials, which affects the negative Poisson’s ratio material to cope with different application scenarios. method of structure
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Embodiment 1
[0043] Embodiment 1 is an unsupported 3D printing TPU three-dimensional negative Poisson's ratio material process
[0044] Such as Figure 1~5 As shown, according to the conditions and algorithms of unsupported 3D printing, a three-dimensional negative Poisson's ratio structural model conforming to structural characteristics was designed in standard CAD software.
[0045] Each hexahedron unit is composed of six surface crease lines and eight outer boundary lines, and the plane parameters of each hexahedron unit are: A(0,86.603,-50); B(50,86.603,0); C(50,0 , -50); D(50, -86.603, 0); E(0, -86.603, -50); F(-50, -86.603, 0); G(-50, 0, -50); H( -50,86.603,0);O(0,0,0);A'(0,86.603,-70);B'(50,86.603,-20);C'(50,0,-70); D'(50, -86.603, -20); E'(0, -86.603, -70); F'(-50, -86.603, -20); G'(-50, 0, -70); H '(-50, 86.603, -20); O'(0, 0, -20); obtain a hexahedron unit entity with a thickness of 0.2;
[0046] The constructed hexahedron unit 7×3 array forms a planar plate structure. Two pl...
Embodiment 2
[0051] Example 2 is an unsupported 3D printing ABS three-dimensional negative Poisson's ratio material process
[0052] same as Figure 1~5 As shown, according to the conditions and algorithms of unsupported 3D printing, a three-dimensional negative Poisson's ratio structural model conforming to structural characteristics was designed in standard CAD software.
[0053] Each hexahedron unit is composed of six surface crease lines and eight outer boundary lines, and the plane parameters of each hexahedron unit are: A(0,86.603,-50); B(50,86.603,0); C(50,0 , -50); D(50, -86.603, 0); E(0, -86.603, -50); F(-50, -86.603, 0); G(-50, 0, -50); H( -50,86.603,0);O(0,0,0);A'(0,86.603,-70);B'(50,86.603,-20);C'(50,0,-70); D'(50, -86.603, -20); E'(0, -86.603, -70); F'(-50, -86.603, -20); G'(-50, 0, -70); H '(-50, 86.603, -20); O'(0, 0, -20); obtain a hexahedron unit entity with a thickness of 0.2;
[0054] The constructed hexahedron unit 7×3 array forms a planar plate structure. Two plana...
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Abstract
The invention belongs to the technical field of 3D printing, and relates to a method for supporting-free 3D printing for a three-dimensional negative Poisson's ratio structure. The The three-dimensional negative Poisson's ratio structure is designed specifically according to conditions and algorithms of supporting-free 3D printing; and a three-dimensional negative Poisson's ratio structure model meeting requirements is established through standard CAD software, the printing technology is regulated and controlled in printing software, all options for adding supporting materials are removed, and then the model is uploaded to a 3D printer to build a model in a layer-by-layer supporting-free mode. According to the supporting-free 3D printing technology, no supporting material needs to be added when a negative Poisson's ratio material is manufactured, so that the method is suitable for manufacturing various printing materials, and the harsh requirement for printing raw materials when the negative Poisson's ratio material is manufactured through a conventional 3D printing technology is removed.
Description
technical field [0001] The invention belongs to the technical field of 3D printing, and relates to a method for unsupported 3D printing of a three-dimensional negative Poisson's ratio structure. Background technique [0002] Compared with traditional positive Poisson's ratio materials, negative Poisson's ratio materials have unique advantages in many properties such as shear resistance, fracture resistance, and energy absorption. The properties of negative Poisson's ratio materials are usually obtained through special structural design, that is, they are composed of periodically arranged negative Poisson's ratio units, such as chiral structures and reentrant structures. In recent years, the rapid development of manufacturing technology, such as 3D printing technology, has been able to manufacture any complex structure from micro to macro, making the integrated manufacturing of structure and function possible. 3D printing is a manufacturing technology that creates complex th...
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