From the end of last year, 3D printed a sudden fire

From the end of last year, 3D printed a sudden fire. The concept of 3D printing is often seen in the media, the road technology "Montana" put the words 3D printing will change the world, and 3D printing of the stock is also quite popular, some people spend tens of thousands of of dollars to buy desktop 3D printer taste, and some people want to rely on the 3D printing Nuggets business. But more people are still a little foggy about this emerging technology. To this end, reporters to Beijing Computing Center, Beijing Industrial Design creative industrial base of the country's first 3D printing experience Museum has a visit, and personally experienced a 3D printing.

"Experience Location", Beijing Computing Center. One of the earliest computing centers in China, 2010 million dollars from abroad to introduce a batch of industrial-grade 3D printing equipment, and set up a special 3D printing laboratory. In addition to providing enterprises with 3D printing mode and other services, the laboratory is also not regularly open to primary and secondary school students, Universal 3D printing knowledge.

"Experience task" with 3D print "copy" a 30 cm high David Head.

"Printing Equipment" foreign import value of more than million industrial grade 3D printer, printing materials for industrial grade photosensitive resin.

The "Experience time consuming" process takes 2.5 hours.

>> Step One

Scan

The staff first put the sensor coordinates on a plaster David head and scanned the David head with a handheld scanner. At this point, a three-dimensional model of David's avatar will appear on a computer connected to a handheld scanner through a data-sensing line.

According to the introduction, the existing scanning equipment is divided into large scanners, handheld scanners and white-light scanners, such as three, the first two working principles are similar, need to be scanned objects placed on the sensor coordinate devices, the role of these induction coordinates device is to reflect the scanned object's surface texture, so as to build a three-dimensional digital model. For large scanners capable of scanning buildings, the size of the sensor coordinates is equivalent to football. White light scanner is similar to camera, through the late automatic splicing method to form three-dimensional digital model, the precision is relatively poor.

>> Step Two

Modeling

The staff used professional model software to revise the three-dimensional data model of David's avatar through scanning and set the long and high data of the model to be printed.

If there is no physical scanning, need to rely on a drawing or just an idea to build a three-dimensional data model, it is more troublesome, the need for professional designers through CAD and other modelling software to design a three-dimensional data model, more time-consuming and laborious.

>> Step Three

Print

After revising the three-dimensional data model of David's avatar and generating it, the staff issued a print instruction to the 3D printer. The 3D printer starts printing the David Avatar in layers by stacking the printed material.

According to the introduction, industrial grade 3D printing material is liquid photosensitive resin, the cost is 7-8 yuan/grams, print out 3D products feel better, precision is also better. Ordinary 3D printer is generally used in printing materials are engineering plastics, feel more rough, poor precision, the cost of 2-3 yuan/grams. The time spent on 3D printing depends on the size of the model, typically taking hours.

>> Step Four

Rinse

After 2.5 hours, the staff will print out the David Avatar to the Flush box with a high-pressure faucet scouring molding, rinse the main purpose is to remove the auxiliary adhesion material. In general, the use of industrial-grade photosensitive resin printing out of the 3D model needs to scour molding, and engineering materials made of the model by hand to remove those auxiliary bonding materials can be.

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Market visits

On the ground to understand how the 3D printing technology is the same, we look at 3D printing market status. Reporters through the interview that the current regardless of the consumer level of the ordinary 3D printing market, or for the manufacturing industry 3D printing Market, in China are still far from forming.

>> Ordinary 3D print look more buy less

Early this year, the country's first 3D printing experience in the Beijing Industrial design creative industrial base opened, mainly for the market to provide 3D printing experience, and sales of 3D printers and 3D printed products, such as some small ornaments, small pendants and toys. The reporter visited the 3D Experience Museum last week and found that there were a lot more people to look at, and few of the real money to experience or buy print products. The high price may be one of the reasons, a 3D printed plastic material iphone shell, where the price of 600 yuan, but to print a image of their own doll is more expensive.

The price of tens of thousands of dollars of 3D printer is no one. Reporters from the agency has begun to sell 3D printer of Jingdong and Taobao understand that they each month 3D printer sales only single-digit. At present, a printing specification of 20 cm within the imported home desktop 3D printer price of more than 20,000 yuan, domestic and 10,000 yuan. In addition, the acquisition of 3D printers, you need to learn the relevant data modeling knowledge, otherwise, either spend tens of thousands of yuan to buy a 3D scanner, or can only pay for professional designers to build data models or download model data from the Web.

It seems that to print out what you want is not as simple as you think. However, the industry is optimistic about the prospects of home 3D printers, 3D print Experience Hall CEO Zhang Leque said, as the cost of the decline, home 3D printer prices will continue to decline, 3D printing has been gradually from the back-end of the industrial model design towards the front-end consumers.

>> Industry 3D Print acceptance less

"In Europe and the United States, large manufacturing enterprises, more than 10 years ago, the general adoption of 3D printing technology open mold (manufacturing molds), but until now, domestic enterprises are more willing to go down to the Factory machine tool open mode, 3D Printing mode of the practice in domestic manufacturing enterprises in the acceptance of very low. Chen Qidong, Vice manager of the marketing department of Beijing Computing Center, is rather helpless.

Chen Qidong told reporters that 3D printing mold has a low cost, the advantages of high precision, and can be modified or redesigned at any time through the data model, "The Factory machine tool open mold, found not suitable to change, can only modify the drawing to do one, and with 3D printing change a data model and then print one." "Chen Qidong analysis, the domestic large-scale manufacturing enterprises do not want to use 3D printing mode, on the one hand, there is confidentiality concerns, on the other hand, the related equipment, talent reserves, and for small manufacturing enterprises, 3D printing open mode cost is higher.

In addition to the open mold, there is also the view that 3D printing is suitable for mass production, will replace the traditional manual manufacturing, and will bring the third industrial revolution. Previous sources said that Japan's home appliance giant Panasonic plans to use 3D printer to mass production of household electrical products. Such views and news have sparked the choking of Terry Gou, Taiwan's richest man and Foxconn, the world's largest foundry company. "If 3D printing is really useful, then my ' Guo ' word is written upside down. "Mr Gou believes that 3D printing is by no means the third industrial revolution, just a gimmick, no commercial value, printed things can not add electronic components, can only see, can not be used."

Hot spots

3D print release of fine particulate matter carcinogenic?

Industrial printers release particulates.

A recent study by the Illinois State University of Technology in the United States says the printing process of 3D printers on the market releases toxic particles that can easily be inhaled into the lungs, causing disease and even death.

In this regard, industry insiders Ju Fangjun that only industrial-grade laser sintering 3D printer will be involved in particulate emissions, the powder or particle released in its use is fine and fine to penetrate directly through the skin, but the million-dollar industrial grade 3D printer is generally used in a specific protective environment, Will not appear in ordinary families.

Can I print a gun with a 3D printer?

It's less accurate in the short term.

This May, an American college student used 3D printing technology to create a pistol for the first time. He posted the blueprints on his website, which prompted the attention of the Obama administration, which is pushing the gun-control bill, and then the US government forced it to delete it.

Shen of the Beijing Computing Center said that he had heard the news, but from his grasp of the situation, the gun on the material, technology has a high demand, 3D printing in the short term can not reach such precision, so that the current 3D printing technology can not replace the high-precision manufacturing.

noun explanation

3D Printing

3D Printing is a rapid prototyping technology, based on digital model files, the use of powder-like metal or plastic and other fusible materials, through the layer of printing method to construct the object.

The 3D printer appeared in the middle of the 90 and was a rapid prototyping device using light curing and paper layering techniques. It and ordinary printer working principle is basically the same, the printer is equipped with liquid or powder, such as printing materials, connected with the computer, through the computer control of the printing material layer by layer, and finally the computer blueprint into a kind.