Tool path generation for CNC machine tools is mainly responsible for quality, accuracy and productivity of the manufacturing process and therefore in the focus of research activities. Many approaches regarding this topic yield to complex algorithms and thus, demand for the availability of sufficient processing performance realizing this algorithms in a CNC real-time environment. For that reason this paper presents an approach on how to use multi-core processors for CNC tool path generation functions. A partitioning concept is presented allowing to concurrently execute multiple threads realizing interpolation and arc length calculation algorithms. At the example of B-spline interpolation the execution time of the tool path generation function could be reduced significantly using the presented approach.
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