CUTTING TOOL Russian patent published in 2008 - IPC B23B27/04 

FIELD: working materials by cutting, built-up cutting tools.

SUBSTANCE: tool includes holder and cutting tip secured to seat of holder by means of clamp. Through opening passing from basic wall to peripheral surface of holder is formed in seat of holder. Cutting tip has through opening with cylindrical lateral surface and at least two spaced along periphery supporting protrusions arranged along radius inside. Said clamp has at least two spaced along periphery clamping protrusions, each protrusion has clamping surface and it may rotate around lengthwise axis between clamping position and unclamping position. In clamping position front portion of clamp is arranged in through opening of cutting tip; each clamping surface engages with respective supporting surface. In order to enlarge manufacturing possibilities, clamping surface of each clamping protrusion is in the form male screw thread and supporting surface of each supporting protrusion is in the form of reciprocal female screw thread. Clamp is made with possibility of linear motion in through opening of seat from unclamping position to shifted position where its front portion is arranged in through opening of seat outside through opening of cutting tip. The last may be removed out of seat.

EFFECT: enlarged manufacturing possibilities of tool.

13 cl, 17 dwg