Correction of Errors during the Manufacture by Computer Numerical Control (CNC) of Blades for an Axial Hydrokinetic Turbine

Abstract

The design and manufacture of new systems for providing electric power to non-interconnected areas are challenges for engineering. There are several alternatives, including water or wind-power generation systems, where hydrokinetic turbines are highlighted. This work establishes the methodology, identification, and correction of errors generated during the manufacture by machining, using CAD/CAPP/CAM techniques, for an axial hydrokinetic turbine. During the manufacturing process, the generation of an error on the edges of the blades was identified, which was attributed to problems in the design of the model since the degrees of freedom of the manufacturing system used were not considered. For the manufacture of complex surfaces in the design of models, the most extreme points of the surfaces in contact must match the tangent edges to ensure that machining tools can reach them with the trajectories generated from the CAM.