Patent ID: 7785048
Filing Date: 2010-08-31
Classification: B23B,B23C,B23P,Y10T

Abstract:
1. A method for milling a tube having heat dissipating elements, comprising the steps of: providing a milling head comprising a body having a central rotational axis and an upper tool mounting portion adapted to be connected to a rotary milling tool, wherein the body has a tube bore adapted to accept a portion of the tube, and one or more milling elements adapted to mill a heat dissipating element on the tube, wherein the one or more milling elements are each connected to a respective milling element support of the body, wherein the one or more milling elements each have a lowermost first cutting edge and a second cutting edge meeting at a tip located at a lowermost, radially innermost portion of the respective milling element, and wherein an angle between (i) a first line extending from the tip to a point on the first cutting edge, and (ii) a second line extending from the tip to a point on the second cutting edge is from about 25° to about 59°, and wherein an angle between the first line and a third line measured through the tip perpendicular to the central rotational axis of the milling head is from about 15° to about 75°; connecting the milling head to the rotary milling tool; and milling heat dissipating elements on an outer surface of the tube with the milling head.