Three-dimensional cad system and parts costing system

摘要

"THREE DIMENSIONAL CAD SYSTEM AND PARTS COST CALCULATION SYSTEM". An object of the present invention is to provide a three-dimensional CAD system for adding data about an output direction of a matrix to three-dimensional data about the part to be formed by that matrix, and a costing system for calculating the cost of the matrix. ask based on that output direction data. A three-dimensional model generating unit (183) of a CAD system (18) generates a three-dimensional model of a given part based on information coming from an input operating unit (181). An output direction data determination unit (184) establishes the output direction data when the input operation unit (181) is operated to designate the output direction of the die for press molding, injection molding or equivalent of the part in question. A projected area calculation unit (185) calculates a projected area S of the part on a plane perpendicular to the applicable matrix output direction based on that part's three-dimensional model and the output direction data involved. A depth calculation unit (186) calculates a depth D of the part in the relevant output direction.