What factors are necessary in designing an end effector for picking up brittle objects?
818764
If the objects have designated capture/handling points, the EE must be able to find them or be guided to them, and engage them.\nIf operating in a gravitational environment (such as on earth) consider picking objects up fork-lift style rather than by grasping; then the only forces will be gravitational (plus any acceleration applied by the EE).\nForce sensing and limiting (via feedback) may be needed; grasping, gravitational and acceleration forces should be taken into account.\nEE contact points/areas may need to be padded to distribute forces over a wide area, and/or the contacting limbs be made highly compliant.\nConsider a snare arrangement for initial capture.\nThe refs. contain some elements of gentle handling used on the Space Shuttle's robotic arm (RMS).\nIf allowed, the objects you intend to lift should be designed with capture points such as the "grapple fixture" on RMS-handled payloads.
586570
Stick the toothpicks together in a kind of lattice-work.  Making series of triangles, and then assembling the triangles into a larger structure will give you the greatest strength/weight ratio.
736619
you need to be more specific.   for example a pulley where only half the force but for twice as long is necessary to accomplish the task.\nwith a lever, you move the lever farther, but use less force.\n\n\nok, i missed the day in physics class, but i tried.\nhttp://en.wikipedia.org/wiki/Mechanical_advantage
837013
High point has a little push pin in the rear of the upper grip that you must push out to take it apart. Careful its plastic!
1187223
Well, a clear question would help. \n\nAre you trying to calculate the power that a certain material can withstand?   Or are you trying to calculate strength?
844798
For every action there is an equal and opposite reaction.\n\nThe smaller object gets busted, as is your question.
427779
Slow it down.\n\nIf you mean 'break' then you will have a job as it is a solid lump of steel - you can break the shaft fairly easy though (personal experience).\n\n\nEnjoy
764447
It depends on how powerful a magnet you use. To get a magnet to perform all of those tasks, it will need to be a really powerful one.
748299
How strong does it need to be?.
992162
In the planning phase of each mission, tools are selected on the basis of the jobs that must be done. Specialized tools are often created when no existing tool will do the job. Many of the tools found in a traditional tool box on Earth are used in space as well. The tools are modified to make them easier and safer to use in space. For example, the handles of tools are often enlarged so they will take less energy to hold. A spacesuit glove is similar to a thick leather welder’s glove in bulk. Because the suit glove is pressurized, the astronaut's fingers extend out when at rest. Closing the fingers around a tool handle takes a continuous application of force. Quite simply, small-handled tools take more force to hold than do large-handled tools.\n\nTo keep control of tools, each tool has some sort of tether or locking system. A socket wrench has a key that has to be inserted into a holder before a socket can be installed at the end of the wrench. Once the key is removed, the socket is then locked onto the wrench and cannot be removed without use of the key again. A short tether and clip enables the astronaut to hang on to the wrench in case it is dropped. There is even a tether on the key. Rechargeable power tools for driving bolts are also used by spacewalkers.
1115091
The best answer to this question would very long. The quick and dirty response is:\n\nCutting tools in metalwork apply a compressive force to the work piece. The compressive force overcomes the forces holding the atoms together and and the material begins to slip along planes of irregular crystal stucture. The effected zone is reffered to as the shear zone. \n\nAgain this is short answer. Probably raised more questions than it answered.
1058511
What do you know about pulling things out at the right time?
576519
tensile strength = (2*P)/(pi*t*d)\nwhere; P =maximum load you get from the machine(kPa); pi = 3.14; t = thickness/height of specimen (m) and d = diameter of specimen(m)
671843
to make an ideal one you would look at the fluid dynamics equations.\n\nHowever ideal ones are very thin at the end and would break so to make real ones you would need some engineering know-how. So that it is strong enough and generates enough lift for your purpose.
454463
There are many answers to your question. Gravity obviously. Another example is if you are try to lift a car with a lever or using a pulley to lift something.
194095
One it protects the ends of your fingers and it aids in picking up very thin things. Cut yours really short and try to pick up a needle.
859858
There are many companies out there that specialize in this area throuhout the country. Contact your local forklift dealer, they also specialize in material handling issues.