Geneva Drive Project
We made the 3D CAD of this project during the same quarter in ME 130 (Intro to ME III). In this class, we discussed design for manufacturability at length, as well as fits and tolerances. We learned how to apply these principles to engineering drawings in order to effectively communicate our designs.
Geneva drives index constant rotational motion and are often used in mechanical watches. We built this project during Spring Quarter 2021 at Cal Poly SLO for IME 146 (Subtractive Manufacturing Processes II). The goal of this project was to gain experience with a wide variety of subtractive machining methods. Each part in this project was made with a different process.
The aluminum base was cut with a water jet
The engraved aluminum drive wheel was CNC milled
The acrylic wheel was laser cut
The black ABS handle was injection molded and
then manually drilled and tapped on a latheSteel fasteners and shims were provided
After manufacturing each part, we performed first article inspections to ensure the parts fit all specified tolerances. We used a combination of calipers, height gauages, go/no go gauages, and an optical comparitor to measure all dimensions for the inspections.
