Entry ID #: 188
Created: Thu, Feb 3, 2011 7:52 PM
How many people are in wheelchairs? How many have joint problems? Each of their lives could be made easier with an exoskeleton leg. The design problem was to build a robot in any of the given fields, ours was medicine. The exoskeleton leg is very helpful in that field. It could be used for people who are in wheelchairs or who have weak joints. It could be helpful in the law enforcement field, the exploration field, or the science field. The leg is geared for power. This would allow people to travel father without tiring. People could carry heavier loads. The exo-skeleton is designed to fit over an individual’s existing leg, and rests on the hips. It could be used in the military or on explorations. It is created using the measurements of an individual ensuring a good fit. The leg is strong and durable, yet light. The leg fits over clothing, or a pad could be fitted inside, making it comfortable. The leg gives the wearer the same range of motion as a normal leg, but with extra strength. To create the leg, the team first entered a brainstorm process. We wanted to make something that would stand out. The idea of an exo-skeleton stood out from the other ideas for several reasons. It was different, it fit into several categories, and it is scientifically possible. After brainstorming, ideas were sketched out, and exo-skeletons researched. There was more information on exo-skeleton legs than arms, so it was decided that a leg would be made. The team performed more detailed research and drew more detailed sketches before any Autodesk work took place. The exoskeleton appears simple and elegant, but is difficult to create in AutoCAD. The most helpful tool was the emboss tool. There were many bent bars required to form the shape of a leg, and it was essential to emboss holes on the bars to create VEX parts. The rectangular pattern tool was also helpful, because it meant that less time had to be spent making a row of boxes, and more time could be spent on the quality of the piece. The first Autodesk work was to build the parts starting from sketch. Channels were made, and so were bent bars. There were a total of three different bent bars made, each with a different radius for a different part of the leg. After the parts were made, the thigh, calf, and hip parts were assembled. Finally the main assemblies were all put together into the finished leg. The autodesk work was then looked at closely. Small problems were fixed, and parts were changed. We realized that the leg needed a remote, which was not very convenient. More brainstorming took place, and a new assembly of a foot with a bumper switch was created. This allows people to use the leg without a remote. The thigh was changed the most, and the finished piece had to be adjusted. After a lot of work the leg was finished.