THROWAWAY TIP, AND CLAMP MECHANISM FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To correctly position a cutting edge 5 to improve tip installation rigidity without applying high precision polishing work to a rear end part 7 of a throwaway tip 3 or a receiving part 14 of a tip installation seat 2. SOLUTION: A cutting edge 5 is formed on the tip side of a tip body 6 in a flat form in this throwaway tip 3, it is inserted into the tip installation seat 2 on a tool body 1 to be pressed to the rear end side by a pressure means 4, and the rear end part 7 is abutted on the receiving part 14, and installed detachably. In the tip body 6, an installation hole 12 to be engaged with the pressure means 4 to receive pressure toward the rear end side, and an inner circumferential rear end side part of the installation hole 12 is formed in a recessed V-form recessed toward the rear end side. The pressure means 4 is provided with a pressure part 26 having a circular cross section to be abutted on a pair of wall surfaces 13 and 13 forming the recessed V-form of the inner circumferential rear end side part of the installation hole 12 to press the tip body 6 to the rear end side.