The diploma thesis addresses the structural redesign of the KeyBot device from a functional 3D-printed prototype into a version suitable for mass production via injection molding. The initial model, originally optimized for additive manufacturing, was analyzed regarding the technological and design requirements of plastic injection molding, such as uniform wall thickness, appropriate draft angles, elimination of undercuts, and joint adaptation. Most components were redesigned for injection molding, while parts with variable geometry remained designated for 3D printing. The design was further optimized by replacing screw connections with snap-fit joints, the mechanical adequacy of which was verified through analytical calculations. Critically loaded areas were evaluated using numerical finite element analysis (FEA). The result of the thesis is a structurally and technologically optimized model, which represents a suitable technical foundation for mold making and subsequent mass production of the device.
|
