Patent ID: 7832967

Claim:
A solid replaceable drill cutting insert having a central rotational axis, said cutting insert comprising: a solid cutting tip portion comprising at least one cutting edge; a solid elongated projection being disposed to project from a central section of said cutting tip portion along said central rotational axis; said cutting tip portion comprising at least one wing being disposed to extend in a substantially radial direction with respect to said central rotational axis and beyond an outer surface of said elongated projection; and said at least one wing comprising: a top tip surface and a bottom contact surface being disposed opposite said top tip surface; an inclined peripheral surface being disposed to extend between said top tip surface and said bottom contact surface; a side flute surface being disposed to extend between said top tip surface and said bottom contact surface; an inclined side bearing surface being disposed opposite said side flute surface and being disposed to extend between said top tip surface and said bottom contact surface; and said inclined side bearing surface being inclined at an acute angle with respect to said central rotational axis, wherein said inclined side bearing surface is inclined at an angle of at least 15° and at most 60° with respect to said central rotational axis.