Abstract: A numerically controlled machining data for controlling a numerically controlled machine tool on the basis of a shape model representing a product to be machined by the numerically controlled machine tool is produced by the steps of storing in a memory position data of each machined portion on the shape model and machining attribute data on contents of machining to be carried out for the machined portion, reading out from the memory the machining attribute data for a specified machined portion, obtaining data on the order in which tools are used and data on the machining condition from a machining information file according to the machining attribute data read out, and converting the data on the order in which tools are used, the data on the machining condition and the position data of each machined portion into numerically controlled machining data conforming to the numerically controlled machine tool.

Abstract: The present invention discloses an apparatus and a method for automatically designing a jig comprising at least one part. In this apparatus and method, the kind of a jig and the kind of a workpiece to be worked on are first specified, a basic linkage mode which basically shows a linkage between the parts of the specified jig is then searched for, and structural models of the parts forming the jig are successively generated by using at a starting point data with respect to a position of the workpiece to be worked on by the jig on the basis of the basic linkage model searched for.