Automatic 3D measuring system for optical scanning of axial fan blades

摘要

Consumer electronics are ever more sophisticated in terms of esthetics and design. Due to mass production, the required sampling quantity for quality inspection of products has surged considerably. As such, learning how to utilize the appropriate device and methodology to accomplish free-form surface measuring in an efficient, precise, and timely way has become a very important topic for quality control of the design of consumer electronics. Focusing on the overlap interference problem of fan blades produced in the axial fan blades, this research proposes a geometric calculation algorithm and calculates the suitable measuring orientation, which can be used to evade the interference area of the surface of each fan blade, so as to achieve the objective of automatic measuring. Meanwhile, this research develops a visual software system to simulate the actual optical scanning orientation of non-contact measuring, intending to let users observe the optical scanning orientation of fan blades and estimate the measuring results through the simulated images. Finally, by the way of real measuring, this paper proves the feasibility and convenience of this research.