CUTTER Russian patent published in 2007 - IPC B23C5/08 B23C5/20 

FIELD: the invention refers to metal working, a multi-part cutting instrument particular to multi-part disk cutters.

SUBSTANCE: the cutter has a body which has a periphery and lateral surfaces. In each socket of the body there is a setting in with a cutting plate fixed on it. The socket is limited with a rear wall, an upper wall with supporting surface and a low wall with a front and rear supporting surfaces and is open from the side of the periphery surface and the lateral surfaces of the body. At that the supporting surfaces of the upper and the low walls are designed for interaction with the mating supporting surfaces on the setting in. The supporting surface on the upper wall is located in a radial direction between the supporting surfaces on the low wall and is inclined in the direction of the periphery surface of the body. The setting in has a hollow opening in which the fastening screw with a conical screw-die is located. The screw-die interacts with a nut having a conic exterior surface and a slot crossing the hollow opening and forming a spring jaw for interaction with the supporting surface of the upper wall of the socket of the body. For increasing inflexibility of the body due to reducing the length of the socket in the tangential direction an additional wall is fulfilled in the socket for interaction with the mating additional supporting surface fulfilled on the setting in and located in the radial direction between the front supporting surface of the low wall and the supporting surface of the upper wall of the socket.

EFFECT: increases effectiveness of a cutter.

3 dwg