Performance comparison of three 3D printer devices

Since 2012, 3D printing technology has been introduced into China, and domestic 3D printing technology has shown a situation of flowers competing for beauty. There are more and more technologies in the field of 3D printing, which are used in different industries. Each 3D printing technology has its own particularity. For its field, today we will introduce the characteristics of three 3D printing technologies: FDM, DLP and SLA.

1、 Dlp3d printer features:

① Dlp3d printer principle. DLP, "digital light projection" technology uses the same consumables as SLA, which are light curing resins. The biggest difference between DLP and SLA is that DLP uses the digital light source of the projector and SLA uses the laser head. Because of this, one sweep of DLP is one piece, and SLA forming can only rely on one laser point.

② Dlp3d printer accuracy. If the dlp3d printer pursues the forming size, the 3D printing accuracy will be reduced.

Industrial 3D printer

3、 Sla3d printer features:

① Sla3d printer forming principle SLA, "three dimensional light curing molding", the laser beam outlines the shape of the first layer of the object on the surface of the liquid resin, then the manufacturing platform drops a certain distance (between 0.05-0.025mm), and then immerse the curing layer into the liquid resin, so on. The resin used is photosensitive resin, which will form a solid state after laser beam irradiation.

② Sla3d printer forming size. The printing speed is the same as that of SLA, but it can be done slowly in theory. Moreover, the current technology can not make large SLA 3D printers. At present, the forming size: FDM > SLA ≈ DLP.

③ SLA and DLP have much higher accuracy because they are light forming. The light from DLP is fan-shaped light, which is scattered. SLA is laser, which is similar to a straight line, so it will be better than DLP in accuracy. At present, in terms of accuracy: SLA > DLP > FDM

④ Comparison of 3D printing materials used by three 3D printers. At present, generally speaking, fdm3d printer has a wide range of materials on the market, and the price is relatively cheap. The price is controlled between 50 and 200 yuan for one kilogram of ABS consumables. Other 3D printers have high technical requirements, probably controlled above 300.

2、 Features of fdm3d printer:

① Principle of fdm3d printing technology: FDM is the principle of "melting deposition" technology. It is to heat and melt ABS, PLA and other silk materials through the heating device, then squeeze them out like toothpaste through the extrusion head, pile them up layer by layer, and finally form.

② Print size of fdm3d printer The forming size of fdm3d printer is relatively small and flexible in structure, including XYZ frame structure, delta structure and manipulator. Therefore, the forming size can be made very small or very large. However, large-size FDM 3D printers often have the problems of poor stability and slow printing speed. Therefore, without strong technical strength, it is impossible to build a large-scale FDM 3D printer.

③ Fdm3d printer forming size. We all know that the forming accuracy of fdm3d printer is controlled by the XYZ three axes of 3D printer. Generally speaking, its z axis is the accuracy of stepping motor (commonly known as thickness), and the forming accuracy of 3D printer is affected by the accuracy of X and Y axes. The forming size of fdm3d printer is relatively small, which is not as large as the other two 3D printers.

④ Fdm3d printer forming accuracy. Because FDM extrudes consumables layer by layer through the extrusion head, the step effect is obvious (that is, the thing layer by layer), and the requirements for mechanical structure are relatively high. In addition, theoretically, the smaller the diameter of the nozzle of FDM 3D printer, the higher the accuracy. However, if the nozzle is small, it is easy to cause the blockage of consumables, so the smaller the nozzle is, the better.

④ Price comparison of three 3D printers. There is no doubt that the price of fdm3d printer is the cheapest. It can't match other 3D printers in terms of precision and molding size. Generally, fdm3d printers cost 3000-4000 yuan, while dlp3d printers cost 8000-30000 yuan. Sla3d printers generally cost more than 30000 yuan due to high technical requirements.

These are the characteristics of three 3D printers,