Control of CNC machine tools

This invention relates to multi-axis computer numerically controlled cnc tooling systems in which a cutting tool is movable relative to a workpiece under the control of programmable control means including a computer program known as a "part program".
As used herein the term "cutting tool" refers to the portion of the machine that is designed to act upon the workpiece to perform the desired task. In the context of this invention, the cutting tool is not restricted to standard turning or milling cutters, but also includes all mechanical, electronic and/or electro-mechanical devices used to modify the shape and/or properties of the workpiece. Examples of cutting tools include: end-mills, turning tools, grinding wheels, laser cutting beams, plasma beams and punch tools.