Abstract: An interface element between a first tool element and a second tool element includes a projection on one of the first and second tool elements and a cavity that receives the projection on the other of the first and second tool element. The cavity comprises inner contours which are designed to receive polygonal and/or stellate projections.

Abstract: The invention relates to a tool (1) for machining workpieces, having a base body (3), at least one geometrically defined culling edge (15, 17) on which a face (21) abuts, a chip space (47, 53) associated with the cutting edge for receiving the chips removed by the cutting edge (15, 17), and a chip guide element (27, 29) associated with the cutting edge (15, 17). The tool is characterized in that the cutting edge (15, 17) together with the chip guide element (27, 29) forms a receiving gap (43, 45) which merges into the chip space (47, 53) and into which the chips removed by the cutting edge (15, 17) are introduced, and the chip guide element (27, 29) has a guide surface (39, 41) which, together with the face (21), forms a receiving channel (51) which abuts the receiving gap (43, 45).

Abstract: The present disclosure relates to an expandable reamer having a base body, a ring section, at least one cutting edge which is geometrically defined and provided on the outer surface of the ring section, an adjustment device which works on the ring section from the inside, has an adjustment screw, and serves to adjust the radial position of the at least one cutting edge, wherein the adjustment device is arranged in a cavity provided in the base body of the expandable reamer, and an adjustment body with a conical or round outer surface. The adjustment body can be displaced in the direction of the central axis of the expandable reamer and serves for the expansion of the ring section. The expandable reamer is characterized in that the adjustment body is designed as an adjustment sleeve which surrounds the adjustment screw and is mounted in a floating manner.

Abstract: The invention proposes a reamer having a base (3), at least one cutting tip (13) disposed essentially parallel to a face (11) of the reamer (1) that comprises a geometrically defined major cutting edge (27) and a geometrically defined minor cutting edge (29) and is held on a contact surface (19) of the base (3) of the reamer (1) by a tightening screw (39) penetrating the cutting tip (13), with a back (17) of the cutting tip (13) resting on the contact surface (19), having an adjustment unit having an adjustment screw acting on the cutting tip (13) that introduces adjustment forces into a lateral surface of the cutting tip (13).

Abstract: A reamer is proposed, having a basic body (3), at least one cutting tip (13) disposed essentially parallel to a face (11) of the reamer (1), which has a geometrically defined major cutting edge and a geometrically defined minor cutting edge (29, 27), and is held on a support surface (19) of the base body (3) by a tightening screw (39) that penetrates the cutting tip (13), where a back (17) of the cutting tip (13), which is polygonal in a bottom view, lies against the support surface (19), and having an adjustment device having an adjustment screw that acts on the cutting tip (13), which screw introduces adjustment forces into a side surface of the cutting tip (13). The reamer is characterized in that the ratio of the diameter (55) of an imaginary in-circle (53) that is tangential to the side edges (41, 41?, 45, 45?) of the back (17) of the cutting tip (13), relative to the thickness (d) of the cutting tip (13), lies in a range of 1.0 to 1.5, preferably in a range of 1.2 to 1.5.

Abstract: A broaching tool for the machining of bore surfaces, namely for introducing at least one groove, is proposed, the tool having a cutter head (5) with at least one cutter (69) and with a body (3) bearing the cutter head (5). The tool is characterized in that the cutter head (5) is rotatably movable and positioned eccentrically in the body (3), and that the middle axis (65) of the cutter head (5) forms an acute angle ? with the middle axis (7) of the body (3).

Abstract: A tool for the cutting machining of precision bores in workpieces, with a first machining step which has at least one geometrically defined cutting edge, and with a second machining step which has at least one honing strip with geometrically undefined cutting edges, is proposed. This is distinguished in that the first machining step has at least three support regions which are arranged at a distance from one another in the circumferential direction and which are designed and arranged such that they are supported on the wall of the precision bore during the machining of the latter.

Abstract: It is suggested here that a tool for the machining of workpiece surfaces, with at least one adjustable, geometrically defined cutting edge (7) with an adjusting device (29) for the adjusting of the distance of the cutting edge (7) to the central axis (33) of tool (1), whereby the adjusting device (29) has a drive shaft (11) that acts on an adjusting gate valve (31) via a gearbox (25), which determines the distance of cutting edge (7) from the central axis (3) of tool (1), whereby it is proposed that adjusting gate valve (31) be designed as a piston valve arranged eccentrically to the central axis (33) of tool (1). Tool (1) is characterized in that transmission (25) has a high reduction and directly acts on adjusting gate valve (31).

Abstract: A tool system having at least two tool parts with opposed end contact surfaces which bear against one another in the region of an interface. The contact surfaces have a tooth system thereon including intermeshing teeth and recesses. The tooth system is shaped and positioned such that the contact surfaces can be fitted together only in at least one defined rotary angle position with respect to the center axis of the tool parts.

Abstract: A tool is proposed for metal-cutting machining of bore surfaces with at least one cutter insert (1s, 1?s; 1u, 1?u, 1?u) which is let into the end face (41) of the tool (10) and at least one cutter insert (1s, 1?s; 1u, 1?u, 1?u) which is let into the circumferential face (43) of the tool (10), said cutter inserts (1s, 1?s; 1u, 1?u, 1?u) having at least two geometrically defined cutting edges. Said tool is characterized by the fact that one of the cutting edges of the cutter inserts is embodied as a roughing cutting edge (17, 17?) and the other cutting edge of the cutter inserts is embodied as a finishing cutting edge (19, 19?), and in that the cutting edges are arranged on the two ends of a side edge (15, 15?) of the cutter inserts.

Abstract: A tool for machining borehole surfaces, includes a base body, a cutting device having at least one cutting die with at least one geometrically defined tool edge, and at least one guide surface for guiding the tool (1) inside the machined borehole. The at least one cutting die being tangentially fastened to the end face of the tool, and preferably embedded therein, The at least one cutting die is provided with a rounded cut for producing a support surface adjacent to the tool edge is produced, the support surface being arched with a radius that is smaller than the radius of the borehole to be machined, and the region of the support surface directly adjoining the tool edge resting against the borehole wall to be machined, and the end region of the support surface, as viewed in the peripheral direction of the tool, which is situated at a distance from the tool edge being situated at a distance from the wall of the borehole.

Abstract: A tool for metal-cutting machining of a surface of an opening particularly of a valve seat in a cylinder head of an internal combustion engines. The tool has a cutter tip with at least one geometrically defined cutting edge. The cutter tip rests on two supporting regions in the tool which are arranged at an angle ?, and an angle-bisecting line runs essentially perpendicularly with respect to the active cutting edge which then is removing chips from the valve seat. A claw holds the cutting tip to the tool end. Coolant and lubricant are supplied through an outlet from the claw.

Abstract: A valve seat and valve guide machining tool for the precision machining of valve seats and valve guides in a cylinder head of an internal combustion engine is disclosed, comprising at least two tool parts (3,5) of which a first comprises at least one geometrically defined cutter (11), provided for the valve seat machining and a second comprises at least one geometrically-defined cutter (15), provided for valve guide machining, which are connected to each other by means of a precision interface (17). The precision interface (17) is a squat conical connection, comprising a first plane surface (19) on the first tool part (3) and second plane surface (21) on the second tool part (5), arranged perpendicular to a mid-axis (23) of the tool (1) and, in the assembled state of the tool (1), lie adjacent to each other, said first tool part (3) being made from steel.

Abstract: An interface of a tool is proposed with a first part serving as a seat having a female taper, which part has a first conduit section located concentrically to its center axis, a second part having a hollow shaft taper introduceable into the recess, which part has a second conduit section located concentrically to its center axis, where the center axes of the first and second parts align and having a collet chuck having two chuck jaws which comprises an actuating device coacting with the chuck jaws which can be activated by means of an actuating element. The characteristic feature of the interface is that the actuating device (43) has a caging element (47) which can be shifted to two operating positions and which has a central passage (71) which is located such that the center axes of the first and second parts (3, 5) pass through said passage.

Abstract: A broaching tool for the machining of bore surfaces, namely for introducing at least one groove, is proposed, the tool having a cutter head (5) with at least one cutter (69) and with a body (3) bearing the cutter head (5). The tool is characterized in that the cutter head (5) is rotatably movable and positioned eccentrically in the body (3), and that the middle axis (65) of the cutter head (5) forms an acute angle ? with the middle axis (7) of the body (3).

Abstract: A tool for fine machining of work pieces involving metal removal is proposed having at least one cutter (13) for preliminary machining with a geometrically defined cutting edge (15) and having at least one cutter (21) for final machining with a geometrically defined cutting edge (23). The characteristic of the tool is that the cutter (13) for preliminary machining is part of a preliminary machining stage (3) and the cutter (23) for final machining is part of a final machining stage (5) and that an interface (9) located between the preliminary machining stage (3) and the final machining stage (5) is provided with a first flat surface (27) and a second flat surface (29) which are located on the preliminary machining stage (3) and the final machining stage (5) and which has a device (11) ensuring the coaxiality of the preliminary machining stage (3) and the final machining stage (5) to each other.

Abstract: A valve seat and valve guide machining tool for fine machining the valve seat and valve guide in a cylinder head of a combustion engine, having at least two tool parts (3,5) of which a first has at least one geometrically determined blade (11) and is assigned to machining the valve seat, and has a second at least one geometrically determined blade (15) and is assigned to machining the valve guide which are connected by a precision interface (17), where the precision interface (17) is configured as a truncated cone and has a first flat surface (19) on the first tool part (3) and a second flat surface (21) on the second tool part (5) which are located perpendicular to a center axis (23) of the tool (1) and, when the tool (1) is assembled, abut each other, where the first part of the tool (3) is proposed made of steel.

Abstract: The invention relates to an interface between two parts of a tool system, in particular to a metal cutting tool (1). Said interface comprises a holder (3) provided with a cavity (31), an interchangeable head (5) which is arranged on the axial extension of the holder and provided with a projection (33) introducible into the cavity (31) and a clamping device (19) for fixing the interchangeable head (5) to the holder (3). The inventive interface is characterised in that the clamping device (19) is provided with a holding bolt (41) and an eccentric element (21) which axially displaces said bolt and is actuated through a peripheral surface (17) of the metal cutting tool (1).

Abstract: A tool for metal-cutting machining of bore surfaces including at least one cutter insert into the end face of the tool and at least one other cutter insert into the circumferential face of the tool, the cutter inserts each have at least two geometrically defined cutting edges. One of the cutting edges of each cutter insert is a roughing cutting edge and the other cutting edge of the cutter insert is a finishing cutting edge. The two different cutting edges are arranged at the two opposite ends of a side edge of the cutter inserts and preferably at the ends of all side edges.

Abstract: A tool for the cutting machining of precision bores in workpieces, with a first machining step which has at least one geometrically defined cutting edge, and with a second machining step which has at least one honing strip with geometrically undefined cutting edges, is proposed. This is distinguished in that the first machining step has at least three support regions which are arranged at a distance from one another in the circumferential direction and which are designed and arranged such that they are supported on the wall of the precision bore during the machining of the latter.