I agree, Elizabeth. I'm glad you brought it up because the whole concept of what could work as a secondary, stronger connection method is an interesting design--and manufacturing--problem. Pinions might be too complex and expensive, and at much smaller dimensions probably wouldn't work at all.
Jim, after writing about sophisticated optimization software I saw demo'ed at the Altair conference, I'm even more acutely aware of how much the smallest changes can make in efficiency and manufacturability of a design, not to mention cost. So I'm not at all sure that adding extra volume to each cube that's only going to be used in only a few of them would be a good idea from a cost and price standpoint of manufacturing thousands or more. That's not done in any other high-volume product; I doubt it would be in robots. The economies of scale you seem to be thinking of are usually applicable to zillions of semiconductor chips or millions of very simple consumer products. Economies of scale don't work the same in different types of product designs.
OK, point taken. SO, thinking about it from a product design perspective you still benefit from economy of scale by designing the basic cube package with void space areas that can house the special features you mention on enhanced cubes. Like adding bells & whistles option to a car; the base model remains the same.
Jim, that identical-cube scenario is called a homogeneous architecture, which does have the advantage of interchangeable cubes that are easily replaced in a structure, as we discussed in this feature article on self-assembled devices:
But the researchers say that they do envision "special-purpose cubes, containing cameras, or lights, or battery packs, or other equipment, which the mobile cubes could transport." This is a heterogeneous architecture, which gives the structure, or robot, built with such modules much more potential functions and capabilities.
Rob, the researchers say in the press release that they hope to get the module size down a lot smaller, as is typical in modular robotics for self-assembly, as we discussed here: http://www.designnews.com/author.asp?section_id=1392&doc_id=261138
Ann, then it will certainly be interesting to see what the team comes up with next. While the cubes show a new take on movement and control, the next step may be a practical application. Perhaps integrated drive reassembly as a plant shifts from one product to the next.
A recent report sponsored by the American Chemistry Council (ACC) focuses on emerging gasification technologies for converting waste into energy and fuel on a large scale and saving it from the landfill. Some of that waste includes non-recycled plastic.
Capping a 30-year quest, GE Aviation has broken ground on the first high-volume factory for producing commercial jet engine components from ceramic matrix composites. The plant will produce high-pressure turbine shrouds for the LEAP Turbofan engine.
Seismic shifts in 3D printing materials include an optimization method that reduces the material needed to print an object by 85 percent, research designed to create new, stronger materials, and a new ASTM standard for their mechanical properties.
A recent study finds that 3D printing is both cheaper and greener than traditional factory-based mass manufacturing and distribution. At least, it's true for making consumer plastic products on open-source, low-cost RepRap printers.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.