Research on the Rapid Slicing Algorithm for NC Milling Based on STL Model

摘要

This paper presents a new rapid slicing method for NC milling based on STL model. Firstly we establish a hash table to store coordinates of slicing planes. All the slicing planes that are intersecting with a given triangular facet can be quickly found through searching the hash table. Then we can calculate the intersecting lines and connect them to form the contours. In layered process each triangular facet was searched only once and do not need to create complex topology for the read in STL model. The results obtained by this layering algorithm can be used in NC milling based on STL model.