Patent 7226338 was granted and assigned to D4D Technologies on June, 2007 by the United States Patent and Trademark Office.
The improved milling machine makes use of individually controlled x-axis, y-axis, and z-axis carriages. These carriages provide positive and precise control of the position of the cutting tools and the blank to be cut. A tool changer allows the tools to be changed to accommodate other materials. A camera is used to detect wear on the tools.