Patent ID: 7363103

Claim:
A machining information generating apparatus for generating machining information for a determination of a necessary tool when a tool path for machining is created in a computer aided manufacturing (CAM) system from CAD data relating to workpiece generated in a computer aided design (CAD) system, comprising: a machining example database that stores information of machining examples including an equation model that takes into account an uncut amount and a tool used for machining for each machining example, wherein the equation model is handled as characteristics for machining; a tool database that stores information of tools; a shape analyzing unit that obtains the CAD data and creates an equation model taking into account a volume of an uncut amount based on the CAD data; a machining example database searching unit that searches the machining example database for a machining example in which the equation model most closely approximates the equation model created by the shape analyzing unit; and a machining tool determining unit that searches the tool database for a tool most relevant to the tool of the machining example searched by the machining example database searching unit, and generates the machining information.