Abstract: Proposed is a drilling tool for drilling in solid material, having a base body (1) containing chip flutes (5, 5a) and at least two interchangeable inserts (3, 3a) at the face of the base body (1). The inserts are arranged on the base body at different radial distances such that their working ranges partially overlap. The blades (12) of the inserts (3, 3a) are formed by two cutting edges (8, 9) which together form an obtuse angle, that is the point angle (11). The face (13) of the blades (12) has parallel profile ribs (14, 14a) which act as runners and which in the region of the cutting edges (8, 9), aligned in the direction of chip removal, extend radially inwards over a curved course relative to their installed position, toward a flank region (17) of the insert (3, 3a) near the drilling tool axis (7).

Abstract: A method for supplying the working parts of a boring tool, in particular a drill, with a lubricant which both cools and lubricates the drill. A dispenser is connected directly or indirectly to the drill to enable lubricant to be fed to the working parts of the drill through at least one channel in the drill. A boring tool, in particular a drill, is also disclosed with a shaft, a cutter, at least one internal lubricant channel and at least one reservoir being fitted as a dispenser for the lubricant. The reservoir is directly or indirectly connected to the drill by mechanical connections and to the at least one lubricant channel to permit the passage of lubricant. In addition, a tool holder designed to hold the drill is disclosed. The tool holder has an internal dispenser for the lubricant. The dispenser is connected, when the drill is fixed in place, to the at least one lubricant channel in the drill to permit the passage of lubricant.

Abstract: A drill is disclosed with a least one central channel for cooling-lubricant oil feed. The drill has a shaft with at least one flute extending in a spiral around the shaft axis. The oil, fluid, and gas is fed to the point of application of the drill through lateral outlet apertures which are joined to the at least one oil channel by connecting channels.

Abstract: Proposed is a drilling tool for drilling in solid material, having a base body (1) containing chip flutes (5, 5a) and at least two interchangeable inserts (3, 3a) at the face of the base body (1). The inserts are arranged on the base body at different radial distances such that their working ranges partially overlap. The blades (12) of the inserts (3, 3a) are formed by two cutting edges (8, 9) which together form an obtuse angle, that is the point angle (11). The face (13) of the blades (12) has parallel profile ribs (14, 14a) which act as runners and which in the region of the cutting edges (8, 9), aligned in the direction of chip removal, extend radially inwards over a curved course relative to their installed position, toward a flank region (17) of the insert (3, 3a) near the drilling tool axis (7).

Abstract: A rotary tool for drilling and chamfering, which takes place in one common advance, essentially comprises a base body, a drill clamped centered therein and a chamfering tool disposed on the end of the base body toward the drill tip and having a cutter body tip disposed next to the flank of the lateral free face of the drill. The chamfering tool can be radially adjusted in relation to the drill in a direction pointing at right angles in respect to the drill axis.

Abstract: A drilling tool, in particular a drill, has replaceable cutting elements that form the cutting edges, and chip-removing flutes. A chip shaping area (22) at least partially made of a more wear-resistant material than the drill body itself is arranged next to the faces (11) of the main cutting edges (5) approximately in the chip flow direction. In another embodiment, the chip shaping area if made of the same material as the drill body and is subjected to a subsequent local hardening process that makes it wear-resistant.

Abstract: The invention pertains to a drilling tool for drilling in solid metal. It comprises a base body with flutes for chip removal and two interchangeable inserts (1) designed especially as reset bits, having the same shape and size and being arranged in a recess at the end of a flute at the front of the base body. The inserts (1) are situated at different radial distances from the drilling tool axis (30) with overlapping work ranges. The blade (4,4a) of the insert (1) is formed by two cutting edges (10, 10a) and (14, 14a) which together form an obtuse point angle (18). The insert (1) is characterized by an extended form in its longitudinal direction L with channel-like troughing of its faces (3) running essentially in the longitudinal direction and by an arrangement of the blades (4,4a) at the channel ends. Furthermore, the channel has a base surface (9) which with its longer parallelogram sides (6,7) forms an acute angle (8) with the longitudinal axis (2) of the insert (1).