Abstract: A tool holder includes a hollow taper shank chucking device having a center axis, a chucking device, a tension rod which cooperates with the chucking device and an actuating unit by means of which the tension rod may be actuated, i.e., displaced. The actuating unit has an actuating element which is movable at an angle relative to the center axis and which includes at least one actuating part. The angle may be 90°. The tension rod is provided with at least one engagement part. The actuating part and engagement part form a wedge mechanism which is used to convert a radial motion of the actuating element, i.e., a displacement perpendicular to the center axis, into an axial displacement of the tension rod in the direction of the center axis.

Abstract: A connection connecting two tool parts includes a first tool part and a receptacle for receiving a second tool part. A clamping device clamps the tool parts together in a joined state. The connecting point further includes a retaining device that is independent of the clamping device and holds the tool parts together in the joined state.

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: 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 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 reamer includes a base body having at least one insert seat countersunk therein and having at least first and second lateral surfaces. A cutting insert has at least one minor cutting edge inserted in this seat. In addition, a clamping device includes a clamping jaw and an adjustment device for the cutting insert. A first lateral surface is inclined relative to an imaginary vertical line such that the cutting insert is alignable by contacting the lateral surface such that the insert's minor cutting edge has a defined taper, that an opening is provided at the base of the insert seat, through which opening the adjustment part protrudes into the insert seat, and that the cutting insert on its side facing the adjustment part adjoins this part.

Abstract: A drill for producing a drilled hole in work pieces has at least one main cutting edge on an end face. At least one secondary cutting edge is provided in the region of a circumferential surface of the drill. At least one circularly ground land circumferentially adjoins the at least one secondary cutting edge. The circularly ground lands extend over a first longitudinal section in the front area of the secondary cutting edge. In a following second longitudinal section, a secondary flank circumferentially adjoins the secondary cutting edge.

Abstract: A chip-removing tool, includes a basic body, at least one cutting body attachable to the basic body and having at least one geometrically defined cutting edge. An adjusting device has an adjusting element expandable by an adjusting screw. The adjusting element is a slotted ring which is supported, on the one hand, on the cutting body and, on the other hand, on the basic body of the chip-removing tool.

Abstract: The invention proposes a drill bit (1) leaving at least one main cutting edge (3, 3?) and at least one center cutting edge (15, 15?), wherein the drill bit (1) comprises a longitudinal axis (13), and wherein the at least one main cutting edge (3, 3?) and the at least one center cutting edge (15, 15?) are each assigned a rake face (7, 7?, 11, 11?). The drill bit (1) is characterized in that the rake face (11, 11?) assigned to the at least one center cutting edge (15, 15?) has at least two part faces (19, 19?; 21, 21?) which—as seen as perpendicular to the longitudinal axis (13) of the drill bit (1)—form an obtuse angle with one another, so that the at least one center cutting edge (15, 15?) comprises at least two part cutting edges (23, 23?; 25, 25?).

Abstract: A tool holder includes a hollow taper shank chucking device having a center axis, a chucking device, a tension rod which cooperates with the chucking device and an actuating unit by means of which the tension rod may be actuated, i.e., displaced. The actuating unit has an actuating element which is movable at an angle relative to the center axis and which includes at least one actuating part. The angle may be 90°. The tension rod is provided with at least one engagement part. The actuating part and engagement part form a wedge mechanism which is used to convert a radial motion of the actuating element, i.e., a displacement perpendicular to the center axis, into an axial displacement of the tension rod in the direction of the center axis.

Abstract: An aeration device adapted for the introduction of gas into a liquid medium is provided, including an elongated primary distribution member with a proximal end adapted to be connected to a gas source and a distal end adapted to be immersed into the medium. Additionally, at least one aeration member is connected to the primary distribution member at a location on the distribution member spaced from the proximal end thereof and being in fluid communication with the distribution member, adapted for bringing the gas into a state entrappable within the liquid medium. Also, a flotation member is provided, mounted onto the primary distribution member and adapted to assume various positions along the distribution member according to the level of the liquid medium. An aeration system is also provided, the system including an array of aeration devices as described above.

Abstract: A reamer (1) is proposed that comprises a main body (3), that has a first end face (5), in the peripheral face (7) of which grooves (11) are inserted, and that has an inner coolant/lubricant supply including channels (17) which intersect the peripheral face (7) of the main body (3) and thus form outlet orifices (15), and also comprises blades (9) insertable into the grooves (11), wherein the outlet orifices (15) are disposed at a distance from the end face (5) of the main body (3), said reamer being characterized in that a flow channel (19) is created between each two adjacent blades (9, 9?) that is delimited by facing lateral surfaces (21, 31) of the blades (9, 9?) and the peripheral face (7) of the main body (3), the peripheral face being intact between outlet orifices (15) and the end face (5) of the main body (3).

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 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 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.