TOOL FOR BREAKAGE OF MINERAL AND ARTIFICIAL MATERIALS Russian patent published in 1997 - IPC

FIELD: breakage of mineral and artificial materials. SUBSTANCE: tool has holder, head in the form of body of revolution and hard-alloy member. Head front end face has axial projection which forms annular anvil surface. Axial projection end face has recess in the form of body of revolution. Recess presents a dead socket for products of breakage. Diameter of socket walls reduced towards tool holder. Longitudinal axis of recess is located on tool longitudinal axis of symmetry. Hard-alloy member is installed coaxially on head axial projection. Hard-alloy member includes cutting edge annular in shape, circular front end face, and anvil surface is located on its rear end face. Maximum diameter of socket walls in axial projection equals to inner diameter of front end face surface of hard-alloy member. EFFECT: improved design. 11 cl, 4 dwg