Algorithms for Real-Time Tool Path Generation

The conventional input of a CNC, a sequence of data points, describing the tool motion necessary for machining of sculptured surfaces, represent a huge amount of information. As free-form surfaces are usually described as a set of bicubic pathes, it is a strightforward solution to extend the capabilities of the Numerical Control unit with bicubic interpolation, offset generation and collision checking. The tool path is calculated during the cutting process.