Method and apparatus for a cutting process automatic generation tool of CAM

A method of computer aided manufacturing (CAM) by a cutting machine when the cutting machine processes an initial workpiece into a finish shape according to numerical control (NC) data which includes a plurality of cutting regions, the method comprising the steps of:

• creating a rectangular shape including the finish shape from a shape of the initial workpiece and creating a swept shape by projecting the finish shape from a first direction;
• creating a subtract shape A obtained by subtracting the rectangular shape from a shape of the initial workpiece;
• dividing the subtract shape A into a plurality of hexahedron cutting regions;
• creating a subtract shape B obtained by subtracting the swept shape from the rectangular shape;
• dividing the subtract shape B into a plurality of pentahedron cutting regions that define a polyhedron from the rectangular shape;
• creating a plurality of finish shape cutting regions for forming the finish shape from the polyhedron;
• creating the cutting regions of the NC data from the hexahedron cutting regions, the pentahedron regions, and the finish shape cutting regions;
• obtaining a plurality of linear travelling distances and a plurality of rotational angles of one or more tools of the cutting machine on a basis of the cutting regions;
• and
• controlling the cutting machine on the basis of the linear travelling distances and rotational angles of the tools to process the initial workpiece into the finish shape.

A non-transitory computer-readable storing medium that stores a program to execute a method of computer aided manufacturing (CAM) by a cutting machine when the cutting machine processes an initial workpiece into a finish shape according to numerical control (NC) data which includes a plurality of cutting regions, the method stored in the program comprising the steps of:

• creating a rectangular shape including the finish shape from a shape of the initial workpiece and creating a swept shape by projecting the finish shape from a first direction;
• creating a subtract shape A obtained by subtracting the rectangular shape from a shape of the initial workpiece;
• dividing the subtract shape A into a plurality of hexahedron cutting regions;
• creating a subtract shape B obtained by subtracting the swept shape from the rectangular shape;
• dividing the subtract shape B into a plurality of pentahedron cutting regions that define a polyhedron from the rectangular shape;
• creating a plurality of finish shape cutting regions for forming the finish shape from the polyhedron;
• creating the cutting regions of the NC data from the hexahedron cutting regions, the pentahedron regions, and the finish shape cutting regions;
• obtaining a plurality of linear travelling distances and a plurality of rotational angles of one or more tools of the cutting machine on a basis of the cutting regions;
• and
• controlling the cutting machine on the basis of the linear travelling distances and rotational angles of the tools to process the initial workpiece into the finish shape.