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In order to address our problem, we propose a slider crank mechanism with sponges attached at the ends of our links. A slider crank mechanism will allow the sponges to travel in circular motions to avoid any residual streaks that are left from side-to-side motions. The flexibility of sponges, as opposed to squeegees, will help reach the corners of our window and apply more pressure to our glass surface. To automate this process we will attach a geared DC motor to our driving link to deliver low-speed and high-torque control of our system. By attaching our slider crank to a vertical slot mechanism, the slider crank will be able to move vertically while rotating around the window. To achieve this vertical movement we plan on either using a scissor lift, an archimedean spiral gear mechanism, or another slider crank that will move vertically as opposed to horizontally. All of these mechanisms are controlled by an input shaft that we will be able to automate using either a DC motor or a servo motor.
Proposed Scope:
- Design and iterate linkage mechanisms for cleaning motion with dynamic pattern adjustability for different glass surface geometries
- Develop mechanical designs considering sponge force, transmission efficiency and joint robustness.
- Rapid prototype and CAD model linkages to validate sponge motion before production.
- Construct preliminary functional prototype by leveraging manufacturing techniques such as 3D printing and laser cutting.
- Implement a mechanism to control the pressure applied on the glass surface.
- Finalize with machined components to improve performance and reliability of linkages and mounts.
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