Patent ID: 7101127

Claim:
An interchangeable blade cutting tool comprising: a blade section having a cutting section and a rear end section; a drawing member removably coupled to the rear end section; a tool body having a mounting hole into which said blade section and said drawing member are inserted by drawing the drawing member towards a back end in an axial direction of the tool body as to be removably installed in the tool body; a hook section, formed in at least one of the rear end section of the blade section and the drawing member, comprising: a shaft section; and an end section having a corner section protruding farther to an outside of the tool body in a radial direction than the shaft section; and a hook receiving section, formed opposite the hook section in the other of the blade section and the drawing member, and having an end face having an opening sized to allow passage of an end section of the hook section; wherein said opening is closed in a peripheral direction; wherein the end section of the hook section is passed through the opening and the blade section is relatively rotated by a prescribed angle in the peripheral direction with respect to the drawing member, and as a result of contacting the hook receiving section with the hook section, relative rotation in the peripheral direction by the blade section and drawing member, as well as relative movement in the direction in which they move away from each other in the axial direction, are inhibited, and the blade section and drawing member are coupled.