Tool and cutting head for cutting machining

摘要

A tool for cutting machining includes a holder, a cutting head and a threaded fastener for fastening the cutting head to the holder. The cutting head is formed of injection molded cemented carbide and includes at least one cutting edge. The holder has a front surface and the cutting head has a support surface provided to releasably abut the front surface substantially in a radial plane. A central blind hole is provided in the support surface. An insert formed of a material softer than injection molded cemented carbide is secured in the blind hole. The insert includes a thread cooperating with a thread of the fastener for pulling the cutting head toward the holder in response to rotation of the fastener. By further tightening the fastener after the support surface abuts the front surface of the holder, the contact between the thread of the fastener and the thread of the insert forces the insert radially outwardly against a wall of the blind bore.