Find in Library

The purpose of this research is to improve the machining efficiency of free-form surfaces. To this end, this paper analyses the calculation method of line spacing in the machining process of different tools, adopts the space-filling curve method in fractal theory under the premise of ensuring the machining scallop height to meet the accuracy requirements, and proposes a path generation algorithm based on the two-dimensional Hilbert curve in fractal theory. To solve the problems of tool path in the machining process such as machining efficiency and surface features, this paper innovatively sets the corresponding influence factors of the tool path, calculates the weights to determine the tool direction, and generates a tool path with small and continuous values of the integrated function of weights. Doing so it avoids the lifting of the tool at the island or groove position and improves the overall machining efficiency and surface quality. Compared with the related algorithms, the proposed algorithm improves the overall machining efficiency by 20% under the precondition of satisfying the machining quality. Examples also verify the feasibility and practicality of the tool path.