A cartridge for positioning a cutting insert onto a machining tool has a central longitudinal axis, along which the cutting insert is configured to be positioned and an end wall for supporting the cartridge. The end wall defines a first surface extending beyond the end wall and transversally to the central longitudinal axis. The cartridge includes a rear wall for supporting the cartridge against the machining tool and defining a second surface extending beyond the rear wall and a front clamping wall having a clamping hole. The clamping hole extenda along a clamping direction and is configured to receive a clamping screw for clamping the cartridge onto the machining tool, wherein the clamping direction is arranged to intersect the first and second surfaces.

A cartridge for positioning a cutting insert onto a machining tool has a central longitudinal axis, along which the cutting insert is configured to be positioned and an end wall for supporting the cartridge. The end wall defines a first surface extending beyond the end wall and transversally to the central longitudinal axis. The cartridge includes a rear wall for supporting the cartridge against the machining tool and defining a second surface extending beyond the rear wall and a front clamping wall having a clamping hole. The clamping hole extenda along a clamping direction and is configured to receive a clamping screw for clamping the cartridge onto the machining tool, wherein the clamping direction is arranged to intersect the first and second surfaces.

A milling cutter (100) comprising: a cartridge (33) that has a tip (32) fixed thereto; a body (10) that has a pocket (15) formed therein into which the cartridge (33) is inserted; and a fixing tool (40) that fixes the cartridge (33), wherein the body (10) has a fixing tool insertion hole (16) that is adjacent to the pocket (15) on the radial direction inner side thereof, and a partitioning wall (17) between the pocket (15) and the fixing tool insertion hole (16), the fixing tool (40) that has been inserted into the fixing tool insertion hole (16) exerts a radial direction outward force on the partitioning wall (17), the pocket (15) is formed so as to produce a counterforce that resists the radial direction outward force acting on the cartridge (33) via the partitioning wall (17), and the cartridge (33) is fixed in the pocket (15) on the basis of the radial direction outward force.

A milling cutter (100) comprising: a cartridge (33) that has a tip (32) fixed thereto; a body (10) that has a pocket (15) formed therein into which the cartridge (33) is inserted; and a fixing tool (40) that fixes the cartridge (33), wherein the body (10) has a fixing tool insertion hole (16) that is adjacent to the pocket (15) on the radial direction inner side thereof, and a partitioning wall (17) between the pocket (15) and the fixing tool insertion hole (16), the fixing tool (40) that has been inserted into the fixing tool insertion hole (16) exerts a radial direction outward force on the partitioning wall (17), the pocket (15) is formed so as to produce a counterforce that resists the radial direction outward force acting on the cartridge (33) via the partitioning wall (17), and the cartridge (33) is fixed in the pocket (15) on the basis of the radial direction outward force.

A tangential cutting insert for a milling tool includes a cutting face that extends along a longitudinal axis and along a transversal axis, and a cutting edge that extends at the periphery of the cutting face. The cutting face has a central portion including first and second central cutting edges extending along the longitudinal axis and on opposite sides of the cutting face, and an outwardly extending end portion having at least three end cutting edges. A first of the at least two cutting edges is inclined relative to the longitudinal axis and a second of the at least two end cutting edges is inclined relative to the transversal axis at an angle from 10° to 35° respectively, for example, 20° to 30° or 25°.

A tangential cutting insert for a milling tool includes a cutting face that extends along a longitudinal axis and along a transversal axis, and a cutting edge that extends at the periphery of the cutting face. The cutting face has a central portion including first and second central cutting edges extending along the longitudinal axis and on opposite sides of the cutting face, and an outwardly extending end portion having at least three end cutting edges. A first of the at least two cutting edges is inclined relative to the longitudinal axis and a second of the at least two end cutting edges is inclined relative to the transversal axis at an angle from 10° to 35° respectively, for example, 20° to 30° or 25°.

An electrodynamic acoustic transducer (1) is disclosed, which comprises a frame and/or a housing (2), a membrane (3), a magnet system (6) with a plurality of center magnets (7a . . . 7d, 7, 7′) having different magnetic orientations (M.sub.1 . . . M.sub.4) and a coil arrangement (10) with a plurality of voice coils (11a . . . 11d), which are movably arranged relative to the magnet system (6) in an excursion direction (z). The ratio

[00001]$\frac{A_g.Math.h_m}{A_m.Math.w_g}=\frac{l_g.Math.h_{\mathrm{tp}}.Math.h_m}{A_m.Math.w_g}$

is below 1, wherein w.sub.g denotes the mean width of all airgaps (E) within the magnet system (6), A.sub.g denotes the sum of all airgap areas within the magnet system (6), h.sub.m denotes the mean height of the center magnets (7a . . . 7d, 7, 7′) and A.sub.m denotes the total area of the center magnets (7a . . . 7d, 7, 7′). Moreover, the invention relates to an electroacoustic system (19), which comprises an electrodynamic acoustic transducer (1) of the above kind and a control circuit (CC) connected to the coil arrangement (10).

A cutting insert has an upper surface, a lower surface, a side surface connecting the upper and lower surfaces. An intersecting edge between the upper surface and the side surface is provided with a cutting edge. The cutting edge has, in order, a second major cutting edge, a first major cutting edge, a corner cutting edge connected to these major cutting edges, and a flat cutting edge. An obtuse interior first angle (θ) is formed by the second and first major cutting edges. A interior second angle (α) formed by the flat cutting edge and the first major cutting edge is larger than an interior third angle (β) formed by the flat cutting edge and the second major cutting edge. A land is provided adjacent to the first major cutting edge, a width of the land increasing toward the first corner cutting edge.

A cutting insert has an upper surface, a lower surface, a side surface connecting the upper and lower surfaces. An intersecting edge between the upper surface and the side surface is provided with a cutting edge. The cutting edge has, in order, a second major cutting edge, a first major cutting edge, a corner cutting edge connected to these major cutting edges, and a flat cutting edge. An obtuse interior first angle (θ) is formed by the second and first major cutting edges. A interior second angle (α) formed by the flat cutting edge and the first major cutting edge is larger than an interior third angle (β) formed by the flat cutting edge and the second major cutting edge. A land is provided adjacent to the first major cutting edge, a width of the land increasing toward the first corner cutting edge.

A double-sided cutting insert for milling which has eight main cutting edges and eight wiper edges. The cutting insert includes top and bottom faces and four side faces. Each side face includes first and second sub-faces inclined with respect to each other. The first sub-face has a main cutting edge adjacent to the top face and a wiper edge adjacent to the bottom face. The second sub-face has a wiper edge adjacent to the top face and a main cutting edge adjacent to the bottom face. The wiper edge of the second sub-face is inclined inwardly relative to the cutting insert with respect to the main cutting edge of the first sub-face. The wiper edge of the first sub-face is inclined inwardly relative to the cutting insert with respect to the main cutting edge of the second sub-face.