Abstract: An internal cavity cutting tool assembly includes a tool body, a tool hanger, and a bearing assembly. The tool hanger body has a through-bore that is adapted to receive the bearing assembly. The tool body has first and second body portions, each having an arbor bore, a cutting face having a plurality of indexable cutting inserts, and a bearing support surface. The bearing support surface of the second tool body portion is also received by end of the through-bore, such that the bearing support surfaces of the tool body portions oppose each other within tool hanger body. An arbor drive shaft and a support are operatively inserted though openings in a workpiece and through the arbor bore of the tool body. The arbor drive is retained in a milling device to operatively rotate the tool body assembly while precisely locating the tool hanger assembly, thereby sweeping the cutting inserts against the portions of the workpiece to be cut.

Abstract: An internal cavity cutting tool assembly includes a tool body, a tool hanger, and a bearing assembly. The tool hanger body has a through-bore that is adapted to receive the bearing assembly. The tool body has first and second body portions, each having an arbor bore, a cutting face having a plurality of indexable cutting inserts, and a bearing support surface. The bearing support surface of the second tool body portion is also received by end of the through-bore, such that the bearing support surfaces of the tool body portions oppose each other within tool hanger body. An arbor drive shaft and a support are operatively inserted though openings in a workpiece and through the arbor bore of the tool body. The arbor drive is retained in a milling device to operatively rotate the tool body assembly while precisely locating the tool hanger assembly, thereby sweeping the cutting inserts against the portions of the workpiece to be cut.