3D打印技術(shù)是怎么實(shí)現(xiàn)的
3D打印機(jī)的種類猬仁、原材料事期、構(gòu)成荆虱、組件蒿偎、不同顏色、完成作品的用時(shí)怀读、發(fā)展前景
3D printers
by Chris Woodford. Last updated: March 16, 2016.
Even the best artists struggle to show us what real-world objects look like in all their three- dimensional (3D) glory. Most of the time that doesn't matter—looking at a photo or sketch gives us a good-enough idea. But if you're in the business of developing new products and you need to show them off to clients or customers, nothing beats having a prototype: a model you can touch, hold, and feel. Only trouble is, models take ages to make by hand and machines that can make "rapid prototypes" cost a fortune (up to a half million
dollars). Hurrah, then for 3D printers, which work a
bit like inkjets and build up 3D models layer by layer
at up to 10 times the speed and a fifth the cost. How
exactly do they work? Let's take a closer look!
Photo: A B9CreatorTM—a typical low-cost, DIY 3D printer. Other popular 3D printer makes include Z Corporation, Stratasys, Objet Geometries, and Dimension uPrint. Photo by courtesy of Windell H. Oskay, www.evilmadscientist.com, published on Flickr in 2012 under a Creative Commons Licence.
From hand-made prototypes to rapid prototyping
Before there were such things as computer-aided design (CAD) and lasers, models and prototypes were laboriously carved from wood or stuck together from little pieces of card or plastic. They could take days or even weeks to make and typically cost a fortune. Getting changes or alterations made was difficult and time-consuming, especially if an outside model-making company was being used, and that could discourage designers from making improvements or taking last-minute comments onboard: "It's too late!"
Photo: A high-quality rapid prototype of a space plane made in wax from a CAD drawing by NASA. Photo courtesy of NASA Langley Research Center (NASA-LaRC).
