Analysis of several latest cutting-edge technologies in the 3D printing industry
The development of the industry's technical level has always been one of the topics that people in the industry are eagerly concerned about. Today's 3D printing technology is extensively involved, and new breakthroughs are constantly being produced in all walks of life, thus opening up a broader industry market. Every successful development of new technology makes people who are always concerned about the progress of the industry ecstatic. Today, in order to meet the desire of the majority of technical houses, the editor lists the latest major new technologies!
MIT scientists develop technology for 3D printing programmable hair
At this time when nothing can not be 3D printed, the hair seems to be even more casual. But this kind of hair 3D printed by the tangible media group of the Massachusetts Institute of Technology (MIT) Media Lab is more than just adding a soft touch to plastic. This material can be programmed for a series of unexpected practical applications. It is understood that this novel project is called Cilllia (yes, there are 3 Ls in the middle) and was developed by researchers inspired by real hair. As we all know, biological hair not only has a decorative effect, but also keeps warm and feels comfortable. Scientists from the Tangible Media Group have developed a special software that can quickly define the angle, thickness, density and height of the hair.
Then, with this software, they were able to create hair-like structures with a resolution of 50 microns on flat or curved surfaces. After that, things became really interesting. "The ability to 3D print hair-like structures opens up new possibilities for personal manufacturing and interactive design." The research team said in a paper introducing Cilllia. The researchers have made several toys, including a fluffy rabbit with LED lights. Of course, the hair on the surface of the rabbit is 3D printed. When you stroke the rabbit from different angles, the LED will light up differently. Color; In addition, there are several little ballet dancers whose hair printed on the soles of their feet allows them to rotate on the surface of a special speaker. The speed of rotation depends on the angle of the hair.
In addition, the bottom covering the hair can be combined or separated. Because the hair is programmable, the research team can even use it to create sticky panels. In addition, the researchers can use the programmed hair to make finger slide sensors and passive actuators. For example, they printed the hair in the middle of a small windmill to make it respond to vibration, and then fixed the small windmill to a smartphone, they could rotate the blades of the windmill through the vibration of the mobile phone, which is very interesting.
Harvard ’s latest technology can directly “draw†3D metal objects in the air
Scientists at the John A. Paulson School of Engineering and Applied Sciences (SEAS) at the Wyss Institute of Bioengineering, a Harvard University, have developed a new technology for 3D printing complex metal objects. This technology can be used in the air like a 3D printing pen. Directly "draw" 3D metal objects. This is a laser-assisted direct ink writing technology, and related research papers have been published online in the "Proceedings of the National Academy of Sciences" on May 16, 2016. It is understood that this technology can next print an independent microscopic metal 3D structure without any auxiliary support material. It is understood that the head of the study is Professor Jennifer Lewis of the Wyss Institute, and she is also the Hansjrg Wyss Professor of Bioengineering at SEAS.
It is reported that the Lewis team used an ink containing nano-silver particles in this technology. This ink was sent to the printing nozzle, and then the researchers used a programmed laser to apply it to it just after it was extruded. After annealing, the intensity of the laser has been specially calculated, which can just cause the ink to cure. In addition, its printing nozzles move along the X, Y, and Z axes, and combined with the rotating construction platform, can achieve freeform surfaces of any curvature. In this way, a tiny hemisphere, a spiral pattern, and even a butterfly made of silver wire with wide hair can be printed in seconds. And the printed wires showed excellent electrical conductivity, almost matching that of bulk silver.
Compared with the traditional 3D printing technology used to prepare conductive metal structures, the laser-assisted direct ink writing technology is not only superior in the ability to print curves and complex linear patterns in one step, but also has the ability to induce local laser heating, which can conduct electricity The silver wire is printed directly on a low-cost plastic substrate. According to the first author of the study, Mark Skylar-Scott, a postdoctoral researcher at the Wyss Institute, the biggest challenge with this technology is how to optimize the distance between the laser and the nozzle. "During printing, if the laser is too close to the nozzle, the thermal energy will be traced back to cause the cured ink to block the nozzle." Kylar-Scott said: "To solve this problem, we generated a thermal conduction model based on the temperature distribution of the given silver line pattern , And adjust the printing speed and the distance between the nozzle and the laser through this model, so that the "air" printing process can be accurately controlled. "The end result is that the technology can not only produce curves, spirals, and sharpness of various metals It can be directly “written†in thin air with silver ink, which brings unlimited possibilities for electronic and biomedical devices that rely on customized metal structures. In addition to Lewis and Skylar-Scott, Suman Gunasekaran is also a co-author of this study. Gunasekaran is an undergraduate researcher studying chemistry and physics at SEAS. This research was supported by the US Department of Energy, the Office of Science, and the Office of Basic Energy.
Fast plasma deposition 3D printing technology with automatic control
Regarding the combination of automation and laser near net shape (LENS) technology, Japan ’s Okuma Fastems flexible manufacturing automation unit: contains three RPM laser deposition machines (near net shape laser forming technology) and one Okuma MU-6300V five-axis Vertical machining center, this technology is a laser near net type technology to send metal powder. Now, Norsk Titanium is working with Bosch Rexroth to quickly plasma deposit it? Technology advances in the field of automated manufacturing, and this technology is a plasma near net type technology for feeding wire. Norsk Titanium (Norway Titanium) is called the rapid plasma deposition of aviation manufacturing industry that will rewrite the manufacturing history of titanium alloy products? What exactly is the technology?
Before the Airbus factory Premium Aerotec in Germany was performing rapid plasma deposition of Norsk Titanium? Technology to test equipment, ready to use this technology to produce titanium alloy parts on A350 XWB aircraft. Facing the demand for industrialization of manufacturers like Airbus, Norsk Titanium needs to develop its equipment access automation configuration to meet the surge of orders in the European and American markets. Norsk Titanium (Norway Titanium) has recently undergone some plant expansion plans to meet customer demand for increased orders. Bosch Rexroth's customized solution is rapid plasma deposition of Norsk Titanium through 10 servo axes? (Rapid Plasma Deposition-RPD) Motion control involves components to provide motion control, real-time control of multiple plasma arc welding and other functions.
Warren M. Boley Jr, CEO of Norsk Titanium, believes that Bosch Rexroth ’s PLC inverter controller effectively supports Norsk Titanium ’s aerospace customers ’needs for absolute accuracy and scalability. Based on Bosch Rexroth ’s technology, Norsk Titanium makes it easier to expand its ambitious plans to establish its huge market competitiveness in North America. Forging technology has been used in the field of aviation manufacturing for many years, and is mainly used to manufacture key and important parts of aircrafts and engines that bear alternating loads and concentrated loads. The weight of parts made of forgings on the aircraft accounts for about 20% to 35% of the weight of the aircraft fuselage structure and 30% to 45% of the weight of the engine structure. At present, in the field of aviation manufacturing, metal 3D printing technology is not widely used in the manufacture of high-end equipment, but only in a small range: including the integrated manufacturing of aircraft structural parts (wing body integration), large-scale forging of major equipment (nuclear power forging), difficult Processing materials and parts forming, high-end parts repair (blade, casing repair) and other areas that traditional forging technology cannot.
In the aerospace field, materials are often expensive. Rapid plasma deposition technology can save at least 50% of material removal requirements than forging. For machine tools that complete post-processing tasks, less material removal requirements also mean less tool and coolant consumption, faster processing time, and faster equipment investment recovery cycles.
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