METHOD AND METHOD FOR NUMERICALLY CONTROLLED MACHINING SIMULATION BASED UPON NONMANIFOLD BODY DATA STRUCTURE

摘要

PURPOSE:To make it easy for an operator to find an optimum cutting procedure through an interactive processing by holding the result of cutting as nonmanifold body data structure. CONSTITUTION:A storage device 600 being a magnetic disk stores a tool data base file which contains data on the sizes and shapes of various tools, a tool path data file which contains tool paths, a nonmanifold border representation data file which contains data used to calculate a nonmanifold body model, and a data file which contains corresponding procedure relation between cells and basic solids. It is made easy by using this to calculate the total volume of substantial cells halfway in cutting and displays halfway shapes; when cutting simulation is performed while cutting procedures are changed, geometrical set arithmetic need not be done again and logical operation may be small in calculation quantity for each list of basic solids of each cell, thereby easily obtaining a cutting procedure for alteration.