Abstract: A front and back chamfering rotary milling cutter includes a cutter body including an insert pocket and a star-shaped indexable cutting insert releasably retained in the pocket. The cutting insert has star-shaped upper and lower surfaces connected by a peripheral surface intersecting each of the upper and lower surfaces. The cutting insert includes a plurality of circumferentially alternating inner and outer corner portions. A cutting portion is defined by each outer corner portion together with an adjacent first inner corner portion rotationally forward thereof and an adjacent second inner corner portion located rotationally rearward thereof. Each cutting portion includes a front chamfering cutting edge extending from the outer corner portion to the first inner corner portion and a back chamfering cutting edge extending from the outer corner portion to the second inner corner portion.

Abstract: A front and back chamfering rotary milling cutter includes a cutter body including an insert pocket and a star-shaped indexable cutting insert releasably retained in the pocket. The cutting insert has star-shaped upper and lower surfaces connected by a peripheral surface intersecting each of the upper and lower surfaces. The cutting insert includes a plurality of circumferentially alternating inner and outer corner portions. A cutting portion is defined by each outer corner portion together with an adjacent first inner corner portion rotationally forward thereof and an adjacent second inner corner portion located rotationally rearward thereof. Each cutting portion includes a front chamfering cutting edge extending from the outer corner portion to the first inner corner portion and a back chamfering cutting edge extending from the outer corner portion to the second inner corner portion.

Abstract: The present invention provides a cutting tool assembly having a tool shank with an elongated hole extending axially through the tool shank. An elongated support bar having threaded bore at its forward end is retained in the elongated hole. A cutting head having a forward cutting portion and a rear threaded portion is retained in the support bar with its rear threaded portion threadingly engaged with the threaded bore in the forward end of the support bar.

Abstract: The present invention provides a cutting tool assembly having a tool shank with an elongated hole extending axially through the tool shank. An elongated support bar having threaded bore at its forward end is retained in the elongated hole. A cutting head having a forward cutting portion and a rear threaded portion is retained in the support bar with its rear threaded portion threadingly engaged with the threaded bore in the forward end of the support bar.

Abstract: A clamping mechanism for clamping a cutting head to an adaptor; the adaptor having a shank receiving bore and three forwardly slanted unthreaded through bores; the cutting head for clamping to the adaptor having a shank with three forwardly slanted threaded bores. The arrangement being such that with the shank inserted into the shank receiving bore the cutting head is clamped to the adaptor by three retaining screws which pass through the unthreaded through bores and are threadingly engaged by the threaded bores.