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A planning method for scanning path of 3D printing lattice materials

A scanning path and 3D printing technology, applied in the field of 3D printing, can solve the problems of poor surface quality and insufficient forming precision, achieve the effects of small memory footprint, improve forming precision, and ensure melting quality

Active Publication Date: 2020-11-24
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention adopts the idea of ​​discretization, processes and numbers the two-dimensional cross-section information of the lattice material, obtains the scanning path of the 3D printing lattice material, realizes the precise control of the forming accuracy of the lattice material, and solves the problem of existing scanning Insufficient strategic forming accuracy and poor surface quality

Method used

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  • A planning method for scanning path of 3D printing lattice materials
  • A planning method for scanning path of 3D printing lattice materials
  • A planning method for scanning path of 3D printing lattice materials

Examples

Experimental program
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Embodiment 1

[0036] This embodiment includes the following steps:

[0037] Step 1. The three-dimensional model of the lattice material is layered to obtain a slice layer of the lattice material; the theoretical porosity of the lattice material is 85%, and the diameter of the pore-strut is 345 μm. The three-dimensional model of the lattice material ,See figure 1 , the layer thickness of the sliced ​​layer is 100 μm;

[0038] Step 2. Perform lattice material identification processing on the slice layer obtained in step 1 to obtain independent melting units. See figure 2, and then number the obtained independent melting units from left to right and from top to bottom to obtain the numbers of independent melting units: 1, 2, 3, ..., 41; see image 3 ;

[0039] Step 3. Perform contour scanning processing on the numbered independent melting units obtained in step 2 to obtain the contour lines of independent melting units. See Figure 4 ;

[0040] Step 4. Indent the outline of the independe...

Embodiment 2

[0052] This embodiment includes the following steps:

[0053] Step 1, the three-dimensional model of lattice material is carried out stratification processing, obtains the slice layer of lattice material; The theoretical porosity of described lattice material is 94%, and pore-strut diameter is 125 μ m, and the layer thickness of described slice layer is 20μm;

[0054] Step 2. Perform lattice material identification processing on the slice layer obtained in step 1 to obtain independent melting units, and then number the obtained independent melting units from left to right and from top to bottom to obtain the number of independent melting units as : 1, 2, 3, ..., 121;

[0055] Step 3, performing contour scanning processing on the numbered independent melting units obtained in step 2 to obtain the contour lines of the independent melting units;

[0056] Step 4. Indent the contour line of the independent melting unit obtained in step 3 to the inner area of ​​the independent mel...

Embodiment 3

[0066] This embodiment includes the following steps:

[0067] Step 1, the three-dimensional model of lattice material is carried out stratification processing, obtains the slice layer of lattice material; The theoretical porosity of described lattice material is 63%, the pore-strut diameter is 250 μ m, and the layer thickness of described slice layer is 70μm;

[0068] Step 2. Perform lattice material identification processing on the slice layer obtained in step 1 to obtain independent melting units, and then number the obtained independent melting units from left to right and from top to bottom to obtain the number of independent melting units as : 1, 2, 3, ..., 141;

[0069] Step 3, performing contour scanning processing on the numbered independent melting units obtained in step 2 to obtain the contour lines of the independent melting units;

[0070] Step 4. Indent the outline of the independent melting unit obtained in step 3 to the inner area of ​​the independent melting ...

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Abstract

The invention provides a method for planning the scanning path of a 3D printing dot matrix material, comprising the following steps: 1. layering the three-dimensional model of the dot matrix material to obtain a slice layer of the dot matrix material; Identify, obtain the independent melting unit, and then number; 3. Scan the independent melting unit to obtain the contour line of the independent melting unit; 4. Indent the contour line of the independent melting unit; 5. Indent the independent melting unit Perform gridding; 6. Numbering; 7. Perform steps 2 to 6 layer by layer to obtain the scanning path of the 3D printing dot matrix material. In the present invention, the independent melting unit of the lattice material and the grid of the gridded independent melting unit are numbered to obtain the scanning path of the 3D printing lattice material, which improves the forming accuracy and surface quality of the lattice material, and the steps are simple , Reasonable design, convenient implementation, good use effect, can easily and quickly design a reasonable scanning path for dot matrix materials.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a planning method for scanning paths of 3D printing dot matrix materials. Background technique [0002] Lattice material is a typical structural-functional integration material, which belongs to the category of porous materials. It is an ordered porous material with high porosity and periodic structure composed of nodes and connecting rod units. Compared with traditional metal foam and metal honeycomb materials, three-dimensional metal lattice materials based on light metals such as titanium and aluminum alloys have higher specific strength, specific stiffness and energy absorption per unit mass, especially when the relative density is relatively high. At a low temperature, the three-dimensional lattice material has particularly outstanding mass efficiency and performance advantages, and is currently recognized internationally as one of the most promising ultra-to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F3/11B33Y10/00B33Y50/00
CPCB22F3/11B33Y10/00B33Y50/00B22F10/00B22F10/366B22F10/28Y02P10/25
Inventor 杨坤汤慧萍王建杨广宇刘楠贾亮
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH