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Design Evolution

Design Evolution. By Michael Repa. Sketches . We started out with basic sketches of different parts of robot what our robot might look like. We also sketched out concepts of what we wanted to do.

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Design Evolution

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  1. Design Evolution By Michael Repa

  2. Sketches We started out with basic sketches of different parts of robot what our robot might look like. We also sketched out concepts of what we wanted to do. This is a basic sketch of an idea of how to contain golf balls after a robot picked them up. This design includes to planes at alternate angles. This design allows for golf balls to enter, but prevents them from coming out. We planned on adding a box on the right plane that would collect the balls as they entered. golf ball

  3. Dumping the Golf Balls We then tried to come up with a way to dump the balls after our robot had collected them. We decided to use a scissor lift system to dump the balls. The sketches to the left are some of the first ones we made. Once we were set on using a scissor lift to raise the and dump the balls, we drew up some sketches to help us decide where we would place the lift and which part or parts of the robot would be lifted up.

  4. The Lift System • We decided to make the lift connect to the top of the bucket (the box that collects the golf balls). Then, the we designed a drive system to power the lift. The scissor lift would look like the drawing to the left. One arm of the lift would be fixed while the other would slide on a rail. A motor would wind a string around an axle, which pulls the two end of the lift together. This causes the lift to raise up.

  5. Drive chain for the Lift Our first idea for powering the lift was to use one motor to turn an axle that would wined up string around it. Thus causing the scissor lift to lift. When that did not work we tried a system of gears and a motor that were on the each lift. Unfortunately this system was unable to support the weight of the bucket. We then created a new system that was powered by a multitude of rubber bands. This system would hold the lift in place with two pull pins. Once the pins were pulled the “arms” of each lift would be pulled together the rubber bands. Thus causing the lift to raise up. This system successfully lifted up the bucket.

  6. The brush system • We needed to make brush so the robot would scoop the balls up into the basket. At first we want to make a brush like one that is in an vacuum clear, so the ball would be pulled to the center of the ramp as it is scooped up. - We eventually decided to just put two foam pads on an axle with gears on it. This system was able to scoop the balls up and deposit the balls into the basket

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