CN218948438U

CN218948438U - 3D prints cube curved surface lattice structure

Info

Publication number: CN218948438U
Application number: CN202223045700.1U
Authority: CN
Inventors: 许方雷; 张淑琴
Original assignee: Beijing Slt Technology Co ltd
Current assignee: Beijing Slt Technology Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-05-02
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses a 3D printing cube curved lattice structure, which comprises lattice units, wherein the lattice units are arranged in a virtual cube, each lattice unit comprises side lines respectively attached to six faces of the virtual cube, the side lines are connected end to form a closed structure, the enclosed parts of the side lines form curved faces with smooth transition surfaces, communicated holes are formed in the curved faces, and the projection shapes of the lattice units on each face of the virtual cube are identical. The lattice structure has the advantages of very smooth surface, interpenetration of the whole structure, excellent stability, extremely high compression resistance, difficult bending, extremely rigidity, adaptation to various scene application requirements and unique performance, and the smooth interpenetration geometric structure has obvious effect on the improvement of actual performance and has the characteristics of extremely good compression resistance and good heat dissipation.

Description

3D prints cube curved surface lattice structure

Technical Field

The utility model relates to the technical field of lattice structures, in particular to a 3D printing cubic curved surface lattice structure.

Background

3D printing is a rapid prototyping technology, which is a technology for constructing objects by means of layer-by-layer printing using a bondable material such as powdered metal or resin based on digital model files. The advanced production method of 3D printing realizes the possibility of preparing various parts and products by using complex lattice structures, and different lattice structures can be integrated into the design in the forms of repetition, combination, splicing and the like to realize different functions and appearances. The lattice structure can be very different in microcosmic and macroscopic structures, and different lattice structures and lattice structures printed by using different materials can show completely different mechanical properties, so that how to design a 3D printed product through the shape, the size, the hierarchical structure and the material composition of the lattice, and the maximum improvement of the product performance is a very important technical problem. The existing single lattice structure such as pyramid structure, tetrahedron structure and the like is not enough to make the supporting structure in terms of shock absorption effect, structural stability and supporting capability.

Disclosure of Invention

Aiming at the technical problems, the utility model aims at: the 3D printing cubic curved lattice structure has good compression resistance.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a 3D prints cube curved surface lattice structure, includes lattice unit, lattice unit sets up in a virtual cube, lattice unit includes the sideline that laminates mutually respectively with six faces of virtual cube, the sideline end to end forms closed structure, the part that the sideline encloses forms the curved surface of the smooth transition in surface, form the hole of intercommunication in the curved surface, lattice unit is in the projection shape on every face of virtual cube is the same.

Preferably, the lattice unit is a tricycles minimum curved unit.

Preferably, the side lines of the lattice unit are formed by connecting 12 line segments end to end, each surface of the virtual cube is provided with two line segments at intervals, and the line segments respectively intersect with adjacent edges of the virtual cube.

Preferably, the side lines of the lattice unit are curves with smooth transition.

Preferably, a plurality of lattice units are connected to form the lattice structure, and the edges of adjacent lattice units are connected.

Preferably, the lattice unit is made of a liquid photosensitive resin.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the 3D printing cube curved lattice structure comprises lattice units, wherein the lattice units are arranged in a virtual cube, each lattice unit comprises side lines respectively attached to six faces of the virtual cube, the side lines are connected end to form a closed structure, the surrounding parts of the side lines form curved faces with smooth transition surfaces, communicated holes are formed in the curved faces, and the projection shapes of the lattice units on each face of the virtual cube are identical. The structure has very smooth surface, no sharp turning or connecting point of lattice porous structure, mutually communicated integral structure and excellent stability, and the continuously arranged structure has extremely high compression resistance, difficult bending and extremely high rigidity.

Drawings

The technical scheme of the utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a perspective view of lattice units of a 3D printed cubic curved lattice structure of the present utility model;

FIG. 2 is a perspective view of another view of lattice cells of the 3D printed cubic curved lattice structure of the present utility model;

FIG. 3 is a front view of lattice elements of the 3D printed cubic curved lattice structure of the present utility model;

FIG. 4 is a top view of lattice elements of the 3D printed cubic curved lattice structure of the present utility model;

FIG. 5 is a left side view of lattice elements of the 3D printed cubic curved lattice structure of the present utility model;

FIG. 6 is a schematic diagram showing the connection of lattice units of the 3D printed cubic curved lattice structure of the present utility model;

FIG. 7 is a top view of a 3D printed cubic curved lattice structure of the present utility model;

FIG. 8 is a perspective view of a 3D printed cubic curved lattice structure of the present utility model;

FIG. 9 is a perspective view of another embodiment of lattice cells of the 3D printed cubic curved lattice structure of the present utility model;

FIG. 10 is a perspective view of another embodiment of lattice cells of the 3D printed cubic curved lattice structure of the present utility model;

FIG. 11 is a front view of another embodiment of a lattice cell of the 3D printed cubic curved lattice structure of the present utility model;

FIG. 12 is a schematic diagram of another embodiment of the connection of lattice elements of the 3D printed cubic curved lattice structure of the present utility model;

fig. 13 is a perspective view of another embodiment of a 3D printed cubic curved lattice structure of the present utility model.

Wherein: 1. lattice units; 11. a border; 12. a curved surface; 13. a hole; 2. virtual cubes.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Example 1:

fig. 1 to 8 show an embodiment of a 3D printed cubic curved lattice structure according to the present utility model, where the lattice structure includes lattice units 1, as shown in fig. 1 and fig. 2, the lattice units 1 are disposed in a virtual cube 2, the lattice units 1 include side lines 11 respectively attached to six faces of the virtual cube 2, the side lines 11 are connected end to form a closed structure, a portion surrounded by the side lines 11 forms a curved surface 12 with a smooth transition surface, a communicating hole 13 is formed in the curved surface 12, and projection shapes of the lattice units 1 on each face of the virtual cube 2 are the same, and directions of patterns on different faces are different.

The lattice unit 1 is a three-period minimum curved surface 12 unit, the average curvature of the curved surface is 0, the surface is smooth and the holes are highly communicated, the whole structure is precisely controlled by an implicit function, and the coordinate points of the curved surface in the embodiment follow the mathematical expression:

sin(x)sin(y)sin(z)+sin(x)cos(y)cos(z)+cos(x)sin(y)cos(z)+cos(x)cos(y)sin(z)＝0，

according to the triangular equation, polynomial coefficients are taken to be equal in three dimensions of X, Y, Z to control the aperture so as to reduce the anisotropic problem caused by unequal apertures, various extremely small curved surface structures are created, and the pore diameter can be controlled by changing the size of a structural unit because all structures can form a complete surface in three-dimensional space.

The side line 11 of the lattice unit 1 is formed by connecting 12 line segments end to end, each surface of the virtual cube 2 is provided with two line segments at intervals, and the line segments are respectively intersected with adjacent edges of the virtual cube 2 and connected into an orderly whole. In this embodiment, the line segments on the same surface of the virtual cube 2 are parallel, and the end points of the line segments are located at the centers of the edges.

As shown in fig. 6 to 8, the lattice unit body 1 is taken as the center, and the lattice unit body is divergently spliced in the front-back and left-right directions to form an infinitely-associated regular lattice structure.

Example 2:

fig. 9 to 13 show another embodiment of a 3D printed cubic curved lattice structure according to the present utility model, where the lattice structure includes lattice units 1, as shown in fig. 9 and 10, the lattice units 1 are disposed in a virtual cube 2, where the lattice units 1 include side lines 11 respectively attached to six faces of the virtual cube 2, the side lines 11 are connected end to form a closed structure, the enclosed parts of the side lines 11 form curved surfaces 12 with smooth transition surfaces, connected holes 13 are formed in the curved surfaces 12, and the projection shapes of the lattice units 1 on each face of the virtual cube 2 are the same, and the directions of the graphics on the different faces are different.

In this embodiment, the boundary line of the lattice unit 1 is a smooth transition curve, and the coordinate point of the curved surface follows the mathematical expression:

cos(x)*sin(x)+cos(y)*sin(z)+cos(z)*sin(x)＝0。

as shown in fig. 13, a plurality of lattice units 1 are connected to form a lattice structure, the side lines 11 of adjacent lattice units 1 are connected, and the connection is smoothly transited.

The 3D printing cubic curved lattice structure can be cut into a required shape after being piled up through lattice units of 3D printing, and is accurately described by using mathematical expressions, and the basic performance can be directly controlled by using function expression parameters; the surface is very smooth, sharp turning or connecting points of a lattice porous structure are not formed, the whole structure is mutually communicated, the stability performance is excellent, the continuously arranged structure has extremely high compression resistance, is not easy to bend, has extremely high rigidity, is suitable for various scene application requirements, has unique advantages of performance, has obvious effect on the improvement of actual performance due to the smooth and communicated geometric structure, has the characteristics of excellent compression resistance, good heat dissipation and silence, and can meet various increasingly complex industrial application requirements.

In the embodiment, a 3D printing photocuring technology (SLA) is adopted, raw material liquid photosensitive resin is integrally printed by 3D printing equipment, and a sample block is square with the dimensions of 10cm multiplied by 2 cm. The sample block is subjected to physical property test, so that the compression ratio of the sample block is 13%, the density is 0.32g/cm < 3 >, no crack is generated in the normal temperature bending resistance test for 10 ten thousands times, and the sample block is not broken in the low temperature bending resistance test (-15+/-1 ℃) for 5 ten thousands times.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims

1. The utility model provides a cube curved surface lattice structure is printed to 3D, includes lattice unit, its characterized in that: the lattice unit is arranged in a virtual cube, the lattice unit comprises side lines respectively attached to six faces of the virtual cube, the side lines are connected end to form a closed structure, the part surrounded by the side lines forms a curved surface with smooth transition surface, communicated holes are formed in the curved surface, and the projection shapes of the lattice unit on each face of the virtual cube are identical.

2. The 3D printed cubic curved lattice structure of claim 1, wherein: the lattice unit is a three-period minimum curved surface unit.

3. The 3D printed cubic curved lattice structure of claim 1, wherein: the side lines of the lattice unit are formed by connecting 12 line segments end to end, each face of the virtual cube is provided with two line segments at intervals, and the line segments are intersected with adjacent edges of the virtual cube respectively.

4. The 3D printed cubic curved lattice structure of claim 1, wherein: the side lines of the lattice units are curves with smooth transition.

5. The 3D printed cubic curved lattice structure of claim 1, wherein: and a plurality of lattice units are connected to form the lattice structure, and the side lines of adjacent lattice units are connected.

6. The 3D printed cubic curved lattice structure of claim 1, wherein: the lattice unit is made of liquid photosensitive resin.