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Laser additive manufacturing and laser micro-nano processing integrated device and method

A micro-nano processing and laser additive technology, applied in additive processing, solid material additive processing, processing and manufacturing, etc., can solve the problems of difficult and precise positioning, high cost, difficulty, etc., and achieve precise positioning and control, design and Simple, easy-to-control effects

Inactive Publication Date: 2020-07-10
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology has technical problems such as difficulty in precise positioning, low efficiency, complicated process, and high cost that have not been resolved.
[0004] Laser micro-nano processing is one of the important methods for manufacturing functional surfaces, but the main object of its processing is the unobstructed surface of the real object. For the processing of the surface and inner side of complex structures, it is extremely difficult due to the limited space

Method used

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  • Laser additive manufacturing and laser micro-nano processing integrated device and method
  • Laser additive manufacturing and laser micro-nano processing integrated device and method
  • Laser additive manufacturing and laser micro-nano processing integrated device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] like figure 1 shown. An integrated method of laser additive manufacturing and laser micro-nano processing comprises the following steps:

[0047] (1) According to the solid part, establish its geometric model, slice the geometric model to make it discretized, and generate STL (STereoLithography, stereolithography) format file (S100);

[0048] (2) Planning a scanning strategy for selective laser melting / sintering (including, for example, a scanning path) and a strategy for laser micro-nano-machining patterning ( S102 ).

[0049] (3) Vacuum the inside of the forming cavity (also referred to as "printing cavity"), and then pass in protective gas (S104);

[0050] (4) Utilize the powder spreading device to carry out powder spreading (S106);

[0051] (5) Scanning and forming the powder layer according to the scanning path planned in step S102 by using selective laser melting / sintering to obtain the current forming layer (S108);

[0052] (6) For the sidewall of the front ...

Embodiment 2

[0060] like image 3 shown. A device combining laser additive manufacturing and laser micro-nano processing includes a dual-beam coaxial dynamic focusing scanning system ( image 3 : 2, 3, 5-8), gas control system ( image 3 :15, 16), powder laying system ( image 3 :9-11), mechanical motion system ( image 3 :10, 13), laser selective melting system ( image 3 :1-3, 7, 8), laser micro-nano processing system ( image 3 :4-8), software control system ( image 3 :18).

[0061] (1) a gas control system, the gas control system evacuates the printing chamber 17 and feeds a protective gas (for example, nitrogen);

[0062] (2) Powder laying system for laying powder;

[0063] (3) a mechanical motion system, used to control the lifting of the lifting platform 13 and the operation of the scraper (also referred to as a "powder scraper") 10;

[0064] (4) Dual-beam coaxial dynamic focusing scanning system, used to focus, combine and scan two laser beams with different functions;

...

Embodiment 3

[0071] combine Figure 1-3 In this embodiment, the integrated method of laser additive manufacturing and laser micro-nano processing will be used to manufacture cylinders with a diameter of 15 mm and a height of 5 mm with different optical and surface wetting properties. The specific steps are as follows:

[0072] First of all, choose to put the titanium powder of spherical particles with a diameter of 30-50 μm into the powder storage container 9; use CAD software to build 4 cylinder models with a diameter of 15 mm and a height of 5 mm; then use the slicing software to slice these models ; According to the segmentation results, the path of laser selective melting and the path of laser micro-nano processing are planned, and the relevant programs of programming are input into the computer software control system 18; It can be less than 0.1%; then use the powder scraping device 10 (also known as "powder scraper", "powder scraper") to spread powder on the substrate, the thickness ...

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Abstract

The invention belongs to the field of three-dimensional printing and fine processing manufacturing, and particularly relates to a laser additive manufacturing and laser micro-nano processing integrated device and method. According to the device and method, laser additive manufacturing and surface structuring processing are carried out on line at the same time, so that the problems of part formingand surface functionalizing are integrally solved, and the procedures are simplified; additive manufacturing and micro-nano processing are both carried out on a two-dimensional plane based on a layering technology, so that the whole processing process is in an open space and is not limited by a solid three-dimensional space; furthermore, according to a coaxial dynamic focusing scanning system designed by the device and system, additive manufacturing and micro-nano processing are in the same coordinate system so that accurate positioning and controlling can be carried out; and the compatibilityis good, and adjusting and controlling are easy.

Description

[0001] This application may serve as the priority basis for subsequent patent applications (including, but not limited to, Chinese invention patent applications, Chinese utility model applications, PCT applications, and foreign applications based on the Paris Convention). technical field [0002] The invention belongs to the field of 3D printing and fine processing and manufacturing, and in particular relates to a device and method for integrating laser material addition and laser micro-nano processing. Background technique [0003] Due to its complex structure and unique advantages in personalized manufacturing, additive manufacturing has attracted more and more attention in aerospace, biomedical and other fields. However, the main concern of the current additive manufacturing technology is the forming of parts, and it is difficult to take into account the functions of the surface of parts, such as the requirements of wetting performance, optical performance and electromagne...

Claims

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Application Information

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IPC IPC(8): B22F3/105B23K26/359B29C64/153B29C64/20B28B1/00C03B19/01B33Y10/00B33Y40/10B33Y40/00B33Y30/00
CPCB23K26/359B29C64/153B29C64/20B28B1/001C03B19/01B33Y10/00B33Y40/00B33Y30/00B22F10/00B22F12/49B22F10/28B22F10/36B22F12/41B22F12/20B22F12/44B22F12/43B22F12/45B22F10/366B22F12/70B22F10/32B22F10/50Y02P10/25
Inventor 杨亮吴文杰马红林范树迁
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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