Abstract: Drill bit (20) including a drilling shaft and a cutting portion having a first drilling segment (23-1) and a second drilling segment (23-2). The first drilling segment (23-1) has a first inner lateral surface (28-1) with a first inner distance (B1(?), h)), and the second drilling segment (23-2) has a second inner lateral surface (28-2) with a second inner distance (B2(?, h)) from the longitudinal axis (24) of the drilling shaft. The first inner lateral surface (28-1) is formed as a portion of a first inner cone (34-1) which tapers in the direction of a first upper side (32-1) opposite to the underside (31-1) of the first drilling segment (23-1).

Abstract: Drill bit (20) including a drilling shaft and a cutting portion having a first drilling segment (23-1) and a second drilling segment (23-2). The first drilling segment (23-1) has a first inner lateral surface (28-1) with a first inner distance (B1(?, h)), and the second drilling segment (23-2) has a second inner lateral surface (28-2) with a second inner distance (B2(?, h)) from the longitudinal axis (24) of the drilling shaft. The first inner distance (B1(?, h)) varies between a first maximum value (Bmax,1) and a first minimum value (Bmin,1) over the circumference of the first drilling segment (23-1) and has precisely one first absolute minimum value (Bmin,1). The second inner distance (B2(?, h)) is greater than or equal to the first absolute minimum value (Bmin,1) over the circumference of the second drilling segment (23-2).

Abstract: Method for producing a green body for a machining segment (51) from a powdered or granular first matrix material (56) and first hard material particles (57), the machining segment being connected by an underside (61) to a basic body of a machining tool. The machining segment (51) has a projection (?) of the first hard material particles (57) on an upper side (62) opposite from the underside (61).

Abstract: Method for producing a machining segment (51) for a machining tool from a powdered or granular first matrix material (56), first hard material particles (57), which are arranged according to a defined first particle pattern, and second hard material particles (58), which are arranged according to a defined second particle pattern, the machining segment being connected by an underside (61) to a basic body of the machining tool. The machining segment (51) has on the side surfaces a projection of the second hard material particles (58) with respect to the first matrix material (56).

Abstract: Method for producing a green body for a machining segment (51) from a powdered or granular first matrix material (56), first hard material particles (57) and second hard material particles (58), the machining segment being connected by an underside (61) to a basic body of a machining tool. The machining segment (51) has a projection of the second hard material particles (58) with respect to the first matrix material (56) on the side surfaces.

Abstract: Method for producing a green body for a machining segment (51) from a powdered or granular first matrix material (56) and first hard material particles (57), the machining segment being connected by an underside (61) to a basic body of a machining tool. The machining segment (51) has a projection (?) of the first hard material particles (57) on an upper side (62) opposite from the underside (61).