Principle sharing of 3D printing technology

3D printing technology appeared in the mid-1990s. It is actually the latest rapid prototyping device using light curing and paper lamination technologies. 3D printing, which is one of the rapid prototyping technologies, is a technology based on digital model files, which uses adhesive materials such as powder metal or plastic to construct objects by printing layer by layer.

Principle of 3D printing technology:

3D printing is usually realized by using digital technology material printers. The so-called 3D printer works basically the same as the ordinary printer, but the printing materials are different. The printing materials of the ordinary printer are ink and paper, while the 3D printer contains different "printing materials" such as metal, ceramic, plastic and sand, which are real raw materials. After the printer is connected with the computer, the "printing materials" can be stacked layer by layer through computer control, And finally turn the blueprint on the computer into a physical object. Generally speaking, a 3D printer is a device that can "print" real 3D objects, such as printing a robot, printing toy cars, printing various models, and even food. The reason why it is commonly called "printer" is that it refers to the technical principle of ordinary printers, because the process of layered processing is very similar to that of inkjet printing. This printing technology is called 3D stereoscopic printing technology.

Application fields:

The technology has been applied in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automobile, aerospace, dental and medical industry, education, geographic information system, civil engineering, firearms and other fields.

Materials used:

Common materials for 3D printing include nylon glass fiber, durable nylon material, gypsum material, aluminum material, titanium alloy, stainless steel, silver plating, gold plating and rubber materials.

Introduction to printing process:

1. Stack 3D design. First, the computer modeling software is used for modeling, and then the built three-dimensional model is "partitioned" into layer by layer sections, that is, slices, so as to guide the printer to print layer by layer.

2. Slice processing. The printer reads the cross-sectional information in the file, prints these cross-sections layer by layer with liquid, powder or sheet-like materials, and then bonds the cross-sections of each layer in various ways to create an entity. The characteristic of this technology is that it can make almost any shape of objects.

3. Finish printing. The resolution of the 3D printer is sufficient for most applications (the curved surface may be rough, like the sawtooth on the image). To obtain objects with higher resolution, you can use the following methods: first print a slightly larger object with the current 3D printer, and then slightly polish the surface to obtain "high resolution" objects with smooth surface.

4. Slice processing. The printer reads the cross-sectional information in the file, prints these cross-sections layer by layer with liquid, powder or sheet-like materials, and then bonds the cross-sections of each layer in various ways to create an entity.

5. Printing. The resolution of the 3D printer is sufficient for most applications (the curved surface may be rough, like the sawtooth on the image). To obtain objects with higher resolution, you can use the following methods: first print a slightly larger object with the current 3D printer, and then slightly polish the surface to obtain "high resolution" objects with smooth surface.