Cutting tool produced by sintering a blank formed by a pressing tool

A method for producing a cutting bit having a bottom side, having a top side with a periphery which includes corner regions and intermediate regions between the corner regions, and having flanks which are inclined at a positive clearance angle with respect to imaginary cutting planes that are perpendicular to the bottom side, the intermediate regions of the periphery of the top side having cutting edges and the corner regions of the periphery of the top side having cutting edges which are inclined upward with respect to a reference plane that is parallel to the bottom side, said method comprising the steps of:

• (a) loading sinter material into a pressing tool which includes
• an upper die having a guide portion which corresponds to a surface defined by the corner regions of the cutting bit expanded by a predetermined factor and to straight lines connecting the corner regions, the upper die additionally having a pressure face corresponding to the top side of the cutting bit expanded by the predetermined factor and a delimiting line which bounds the pressure face,
• a lower die, and
• a mold member which cooperates with the upper and lower dies, the mold member having a recess for movably receiving the upper die, the recess having a guide portion with a cross section which corresponds to the cross section of the guide portion of the upper die, the upper die having a lowermost position in the recess,
• wherein at least one of the upper die and the mold member is configured so that a free space between the upper die and the mold member exists when the upper die is in its lowermost position in the recess of the mold member, the free space being disposed adjacent and above the delimiting line which bounds the pressure face of the upper die;
• and
• (b) compressing the sinter material in the pressing tool to form a blank which is larger than the cutting bit by the predetermined factor.

A method for producing a cutting bit, comprising the steps of:

• (a) forming a compressed blank of sinter material, the blank having
• a bottom side,
• a top side with a periphery which includes corner regions and intermediate regions between the corner regions, the intermediate regions of the periphery having edges and the corner region of the periphery having edges which are inclined upward with respect to the edges of the intermediate regions, and
• flanks which are outwardly inclined with respect to the bottom side;
• and
• (b) sintering the blank.