MEET ATLAS, the Pentagon’s 6'2", 330-pound humanitarian robot. He was designed to save lives in disaster zones (like Fukushima). But while this Tin Man has a heart, he lacks a brain. In December, seven teams of scientists from top institutions, including MIT and Virginia Tech, will compete to code the bot for action. Each team will send its own Atlas into Darpa’s trials—eight tasks that will test his ability to navigate degraded terrain, drive a utility vehicle, and enter buildings. “We designed Atlas to facilitate programming, but we expect Darpa to make the competition challenging,” says Marc Raibert, president of Boston Dynamics, Atlas’ maker. Here’s the skinny on the massive bot.
Archive for November 2013
With the recent advances in technology, their has been a deluge of new gadgets flooding the markets. From new smartphones to new robots that complete your daily tasks in an orderly and efficient manner, we cannot imagine our lives without the presence of these gadgets.
There are Gadgets that make it to mainstream media and everyone knows about them. But then, there are also novelty gadgets that don’t make it to the limelight but they can greatly improve our life. Today, we have rounded up a similar list of unusual but very useful gadgets that you should have with you.
There are Gadgets that make it to mainstream media and everyone knows about them. But then, there are also novelty gadgets that don’t make it to the limelight but they can greatly improve our life. Today, we have rounded up a similar list of unusual but very useful gadgets that you should have with you.
Magnetic switches could use 10,000 times less power than silicon transistors
Saturday 23 November 2013
Posted by Unknown
MEET ATLAS, the Pentagon’s 6'2", 330-pound humanitarian robot. He was designed to save lives in disaster zones (like Fukushima). But while this Tin Man has a heart, he lacks a brain. In December, seven teams of scientists from top institutions, including MIT and Virginia Tech, will compete to code the bot for action. Each team will send its own Atlas into Darpa’s trials—eight tasks that will test his ability to navigate degraded terrain, drive a utility vehicle, and enter buildings. “We designed Atlas to facilitate programming, but we expect Darpa to make the competition challenging,” says Marc Raibert, president of Boston Dynamics, Atlas’ maker. Here’s the skinny on the massive bot.
What is the Geneva Drive, or Maltese Mechanism ,and how it's work ?
Wednesday 20 November 2013
Posted by Unknown
- Dateit to reddit
Young Australian of the Year, Marita Cheng assembling a robot at Melbourne University last year. Photo: Ken Irwin
You're a brilliant young computer science student who was awarded Young Australian of the Year in 2012 after you founded an international organisation to get girls interested in high tech careers.
A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which is similar in appearance to a spur gear, and is also called a worm wheel).Like other gear arrangements, a worm drive can reduce rotational speed or allow higher torque to be transmitted. Unlike with ordinary gear trains, the direction of transmission (input shaft vs output shaft) is not reversible when using large reduction ratios, due to the greater friction involved between the worm and worm-wheel, when usually a single start (one spiral) worm is used
Worm drives are used in presses, in rolling mills, in conveying engineering, in mining industry machines, and on rudders. In addition, milling heads and rotary tables are positioned using high-precision duplex worm drives with adjustable backlash. Worm gears are used on many lift- (in US English known as elevator) and escalator-drive applications due to their compact size and the non-reversibility of the gear
Worm drives are used in presses, in rolling mills, in conveying engineering, in mining industry machines, and on rudders. In addition, milling heads and rotary tables are positioned using high-precision duplex worm drives with adjustable backlash. Worm gears are used on many lift- (in US English known as elevator) and escalator-drive applications due to their compact size and the non-reversibility of the gear
Uploaded by Saurabh Jain, Mechanical Engineering
Drive shaft:-
A drive shaft, driveshaft, driving shaft, propeller shaft (prop shaft), or Cardan shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that cannot be connected directly because of distance or the need to allow for relative movement between them.
Drive shafts are carriers of torque: they are subject to torsion and shear stress, equivalent to the difference between the input torque and the load. They must therefore be strong enough to bear the stress, whilst avoiding too much additional weight as that would in turn increase their inertia.