SHANK-TYPE CUTTER Russian patent published in 2012 - IPC E21C35/18 E02F9/28 

FIELD: mining.

SUBSTANCE: shank-type cutter with base part includes shank; at that, shank carries the top of cutter made from hard-alloy material, and base part in the zone between shank and cutter top has the receiving section in which the head part is retained. Head part includes circumferential surface for removal of the cut material, which converges in the direction of the cutter top. At that, as per the first version, the head part is retained relative to the base part with possibility of being turned, and surface for removal of the cut material ends in the area of the base part end receiving the cutter top. As per the second version, head part has limit stop (support section) and/or mating surface, which restricts the erection movement of the head part on base part on support surface of the base part. As per the third version, base part has a clamping sleeve in the area of the shank. At that, head part is put on clamping sleeve, and at that, head part retains the clamping sleeve in pre-load position.

EFFECT: reducing the costs for elements at optimised wear.

12 cl, 4 dwg