Cutting device

Abstract

A cutting device (1) with two cutting parts (3, 4) that can be moved along a travel line in a travel direction relative to each other along a cutting plane (E) from a starting position to an end position. Each cutting part (3, 4) has a first side, a second opposite side, and a cutting edge (10, 11) formed by first cutting surfaces (8A, 8B) and second cutting surfaces (9A, 9B). To achieve good cutting results with little wear, the cutting parts (3, 4) are arranged on the same side of the cutting plane (E) and the cutting edges (10, 11) are opposite each other and formed axially symmetrically in relation to the starting position and with respect to a geometric axis running perpendicular to the cutting plane (E) and centrally to a longitudinal extension of the cutting edges (10, 11).

Description

DescriptionCutting DeviceField of Technology

[0001] A cutting device is described with two cutting parts that can be moved along a travel line in a travel direction relative to each other along a cutting plane from a starting position to an end position, wherein each cutting part has a first side, a second opposite side, and a cutting edge, wherein the cutting edges are further formed by first cutting surfaces and second cutting surfaces.State of the Art

[0002] Such cutting devices are known, for example, from US 6 532790 B2. When the cutting parts move together, the first side of the first cutting part moves into alignment with the second side of the second cutting part and vice versa. The first cutting part moves on a first side of the cutting plane and the second cutting part on a second side of the cutting plane. For a complete cut, the cutting parts can move past each other with respect to the cutting edges in such a way that the cutting edges are moved completely past each other.

[0003] In addition, tools have become known that are designed for so-called setting on a cable. Reference is made, for example, to DE 25 23 148 Al, DE 3534 299 Al, DE 94 12623 Ul, and WO 80 / 0 2345 Al.

[0004] Separation is primarily performed on cables for high-voltage lines. These cables include, for example, of a core and conductors arranged around it. The core can be made of steel, while the conductors are made of aluminum. It is sometimes necessary to cut only the aluminum conductors while preserving the steel core. This is also the case, for example, at the end of such a cable that is to31404N1PCT mue / ni / an Dezember 16, 2025be connected to the end of a second cable of the same type, which is preferably designed in the same way.

[0005] With the known tools of this type, the cutting process is uneven. This is attributed to the fact that the first side of the first cutting part is completely formed with the second cutting surface, resulting in a lifting effect from the remaining cable. On the opposite side, cutting through the (typically short) (aluminum) conductor removes a counter-holding force, resulting in uneven movement in the direction of the cable core. It has also been found that when a cable is cut with the known cutting parts, one cutting edge often comes into contact with the (steel) core of the cable and is therefore subject to greater wear than the cutting edge of the other cutting part.Summary of the Invention

[0006] Based on this, a problem is seen in specifying a cutting device of the type mentioned, which allows a favorable cutting result to be achieved with as little wear as possible. Accordingly, the task is to design a cutting device in such an advantageous way that, in addition to a good cutting result, as little wear as possible occurs on the cutting parts. More generally, the task is also to specify a cutting device with an advantageous design of cutting parts.

[0007] According to an initial teaching of the invention, this task is solved based on the fact that the cutting parts are arranged on the same side of the cutting plane and that the cutting edges are opposite each other and formed axially symmetrically in relation to the starting position and in relation to a geometric axis that runs perpendicular to the cutting plane and centrally to a longitudinal extension of the cutting edges.31404N1PCT mue / ni / an December 16, 2025

[0008] The axially symmetrical design of the cutting edges of the cutting parts, which are opposite each other with respect to the axis, allows for an advantageously uniform cutting process, i.e., an advantageously uniform cutting operation. A lifting effect, as is the case with known cutting devices, is counteracted.

[0009] Such a cutting device can, for example, have four individually movable cutting parts, but preferably moving synchronously with each other. These four cutting parts can be opposite each other in pairs on each side of the cutting parts with respect to the axis geometry. In the starting position, there is a diagonal opposite position on each side of the cutting parts. In the direction of travel, two cutting parts can also be opposite each other on different sides of the cutting plane.

[0010] The cutting parts of a pair located on the same side of the cutting plane can be arranged so that they pass each other when moving up to the height of the starting position of the other cutting part. In practice, only partial passing is preferred, as explained in more detail below.

[0011] The (two) cutting parts, which are located on different sides of the cutting plane along the travel line in the direction of travel, can overlap each other during a cutting operation.

[0012] According to another aspect of the invention, the problem is also solved by each cutting part having both a first section that runs on one side of the cutting plane and a second section that runs on the other side of the cutting plane. The cutting parts are thus designed to run at right angles to the cutting plane. The cutting parts essentially move into mutual overlap during a cutting operation. Due to the fact that there are only two cutting parts, they cannot be moved completely into mutual overlap, but this is also not necessary and even31404N1PCT mue / ni / an December 16, 2025undesirable in the case of a cut-off, as is preferably to be carried out with such a cutting device. This is because the core of the cable should not be cut through.

[0013] The design described above is also a preferred further development of the initially described design of the cutting device.

[0014] It is also preferred that the cutting edge is formed at a wedge tip of two first cutting surfaces and second cutting surfaces that run wedge-shaped to each other in cross-section, wherein the first cutting surface of the first and second cutting parts runs essentially parallel to the cutting plane and the second cutting surface of the first and second cutting parts forms an acute angle with the cutting plane in a cross-section in which the cutting plane is represented as a line, forms an acute angle with the cutting plane.

[0015] The design can also be specified alternatively or additionally in such a way that, in an embodiment in which the cutting part has both a section that runs on a first side of the cutting plane and a section that runs on a second side of the cutting plane, the first cutting surface runs on both cutting parts over a first partial length of the cutting edge length on the first side and over a second partial length of the cutting edge length on the second side of the cutting plane, so that when the cutting parts move together, the second side of the second cutting part moves into alignment with the first section of the first cutting surface of the first cutting part and the first side of the first cutting part moves into alignment with the second section of the first cutting surface of the second cutting part.

[0016] The first side of the first cutting part and the second side of the second cutting part, which are visible in a first view in the direction of a longitudinal axis of, for example, a cable to be cut, in an starting position of the cutting parts,31404N1PCT mue / ni / an December 16, 2025move on a first partial length with respect to the extension of the cutting edge, preferably about half, in such a way that the first side of the second cutting part moves over the second side of the first cutting part in this area during the movement and the first side of the second cutting part moves behind the first side of the first cutting part on the further partial length with respect to the cutting edge. In a view in the direction of the movement line, a first part of the first cutting part is behind the corresponding part of the second cutting part and a further part of the first cutting part is then in front of the second cutting part during the movement.

[0017] This design means that the cutting edges cannot move completely past each other. They can only move towards each other up to a contact point, typically in the middle or at a transition between the first and second parts.

[0018] In the design described here, it is also preferable that the cutting edges only move to a certain distance from each other in the middle, i.e., with respect to a partial length of the cutting edges that is approximately assigned to the middle of the total length of the cutting edges. This distance is preferably chosen so that it corresponds, for example, to the diameter of the core of a cable, as described at the beginning, when this is to be cut.Brief Description of the Drawings

[0019] The embodiments disclosed herein are further explained below with reference to the accompanying drawing, which, however, only represents examples of embodiments. In the drawing, it shows:Fig. 1 a front elevation view of a cutting device with a first and a second cutting part;31404N1PCT mue / ni / an December 16, 2025Fig. 2 an enlargement of the portion of the cutting device shown in the dotted box of Fig. 1, with a partial breakaway;Fig. 3 a side view of cutting parts of the cutting device;Fig. 4 a front elevation view of the cutting part shown from the direc- tion of arrow IV in Fig. 3;Fig. 5 a front perspective view of the cutting parts of Fig. 4 shown in a partially closed position;Fig. 6 a rear perspective view of the cutting parts of Fig. 4 shown in a fully retracted or closed position for laying a cable; Fig. 7 a front view of the cutting part according to the arrow VII in Fig- 4,Fig. 8 a slightly tilted top plan view of the second cutting part in the direction of the arrow in Fig. 4;Fig. 9 a cross-section through the cutting parts along line IX -IX in Fig. 2;Fig. 10 a cross-section through the cutting parts along line X - X in Fig. 4;Fig. 11 a front elevation view of cutting parts of a second embodiment;Fig. 12 a side elevation view of the cutting parts shown in Fig. 11;31404N1PCT mue / ni / an December 16, 2025Fig. 13 a rear elevation view of the cutting parts shown in Fig. 11 with a view of the opposite side;Fig. 14 a side elevation view of a partially closed position of the cutting parts shown in Fig. 11; Fig. 15 a front perspective view of the cutting parts of Fig. 11 shown in the partially closed position;Fig. 16 a rear perspective view of the cutting parts of Fig. 11 shown in a fully closed position for laying a cable;Fig. 17 a cross-section of a cable as it appears after being laid using the cutting parts;Fig. 18 a schematic representation of an axially symmetrical design, here with four cutting parts, andFig. 19 a cross-section through a cutting part along line XIX - XIX in Fig. 18.Description of the Embodiments

[0020] With reference initially to Figures 18 and 19, it is shown that at least two, preferably four cutting parts, 3, 3a, 4, and 4a, can be provided, which can each be moved in a travel direction r along a travel line V, insofar as they are opposite each other in the travel direction r, in an overlapping manner. Two cutting parts 3, 4 and 3a, 4a, are arranged on the same side of a cutting plane E.31404N1PCT mue / ni / an December 16, 2025

[0021] The two cutting parts 3 and 4 or 3a and 4a, which are arranged on the same side of the cutting plane E and are diagonally opposite each other, are formed symmetrically, preferably axially symmetrically, with respect to each other, at least with regard to cutting edges 10, 11. This is with respect to an axis A which runs perpendicular to the cutting plane E, along which (on one side or the other) the cutting parts 3 and 4 move, and the cutting parts 3a, 4a move. The axis A runs centrally in the diagonal direction (relative to the starting position shown in Figure 18) with respect to the diagonally opposite cutting parts 3, 4, 3a, 4a.

[0022] Although the cutting edges 10, 11 described below are formed with a wedge-shaped surface in some embodiments, this is not necessary for the realization of the embodiments described here. As illustrated in Figure 19, the cutting edges can also be formed by a surface 8B running approximately parallel to the cutting plane E and an end face or edge 14 running perpendicular to it. In this embodiment, the end faces are preferably formed with a very small thickness of a dimension perpendicular to the cutting plane E.

[0023] If only two cutting parts 3, 4 are provided on the same side of the cutting plane E, as shown in Figure 19 with reference to the cutting parts 3, 4 represented by solid lines, for example, this can initially be used for cutting an object on the opposite side only. This is the case as long as the cutting parts 3, 4 are not moved completely towards each other, so that the first cutting part 3 moves to a height corresponding to the starting position of the cutting part 4 and vice versa. Even with such an arrangement, the cut could still be completed by turning the object to be cut (provided that the cutting parts are only moved towards each other to a height as described below for the single-piece cutting parts).31404N1PCT mue / ni / an December 16, 2025

[0024] On the other hand, the four cutting parts shown in Figure 18 may also be provided. A distance in a direction transverse to the travel line V between the cutting parts 3, 3a and 4, 4a located next to each other on different sides of the cutting plane E can be chosen to be very small. The same applies to the cutting parts 3, 4 and 3a, 4a located on the same side of the cutting plane E.

[0025] In any case, in a design with axial symmetry as described, the desired advantageous cutting process is achieved even with such a design and arrangement of cutting parts 3, 3a, 4, 4a when cutting a cable, which is the preferred cutting process here.

[0026] A cutting device 1 with a cutting head 2 is described with reference to Figure 1. The cutting device 1 is preferably a hydraulically motorized cutting device. Two of the cutting parts, namely the first cutting part 3 and the second cutting part 4, are shown arranged in the cutting head 2. The cutting parts 3, 4 are movable relative to each other along a travel line V which passes through the centers of the cutting parts 3, 4. The travel line V is preferably and in the embodiments shown in form of a straight line.

[0027] Such motorized, preferably hydraulically motorized cutting devices, are known in many respects. With regard to a possible design, in particular the hydraulic drive, reference is made to US 2007 / 0 180 887 Alm the content of which is hereby incorporated in its entirety into the disclosure of the present application, in particular to include features of the aforementioned application in the claims of the present application.

[0028] The cutting parts 3, 4 can be moved against each other in at least maximum overlap, as can be seen, for example, in Figures 6 and 16. This allows a cable 5, as shown in principle in Figure 17, to be cut. The cutting specifically31404N1PCT mue / ni / an December 16, 2025concerns a so-called offset. The cable 5 may in particular be an overhead cable. Specifically, it may also be a cable known as an ACSR (aluminum conductor steel-reinforced) cable.

[0029] Cable 5 has a core 6 and conductors 7 arranged in a circular ring around the core 6. When cutting the cable 5 with the cutting device 1, only the conductors 7 are cut, while the core 6 remains uncut. Figure 17 shows the state after such cutting. While the conductors 7 may be made of a comparatively soft material, such as aluminum, the core 6, which is preferably also composed of several wires connected to each other in a rope-like manner, is made of a harder and / or stronger material, such as steel.

[0030] The cutting head 2, which is shown in the cutting device 1 according to Figure 1, can be designed in accordance with US 6532 709 B2 with regard to the mounting and holding of the cutting parts 3, 4.

[0031] With reference to Figure 2, the first cutting part 3 is shown at the top of the cutting head 2 and the second cutting part 4 at the bottom of the cutting head 2. The first side of the first cutting part 3 is visible and the second side of the second cutting part 4 is visible. In Figure 2, the cutting head 2, in which the cutting parts 3, 4 are mounted, is shown only partially and broken up.

[0032] Cutting part 3 has a first cutting surface 8A and a second cutting surface 9A. Cutting part 4 has a first cutting surface 8B and a second cutting surface 9B. The first cutting surfaces 8A and 8B run essentially parallel to the cutting plane E. The second cutting surfaces 9A, 9B run at an acute angle to the cutting plane E in a cross-section in which the cutting plane E is represented as a line. It forms an acute angle a with the cutting plane E, see for example Figure 10.31404N1PCT mue / ni / an December 16, 2025

[0033] The first cutting surface 8A of the first cutting part 3 includes a first section 8a and second section 8b which are not continuous, the first cutting surface 8B of the second cutting part 4 includes a first section 8c and a second section 8d which are not continuous, the second cutting surface 9A of the first cutting part 3 includes first section 9a and second section 9b which are not continuous, and the second cutting surface 9B of the second cutting part 4 includes first section 9c and second section 9d which are not continuous. This is illustrated in Figures 7 and 8 with regard to the first cutting surface 8B and the second cutting surface 9B on the second cutting part 4.

[0034] The first section 8a and the second section 9b are provided on a first side of the first cutting part 3, as shown in Figure 6 and the second section 8b and the first section 9a are provided on a second, opposite side of the first cutting part 3 and thus are not visible in Figure 6, but in Fig. 5. The first section 9a is rearward of the first section 8a, and the second section 9b is rearward of the second section 8b, as illustrated in Figs. 5 and 6.

[0035] The first section 8c and the second section 9d are provided on a first side of the second cutting part 4, as shown in Figure 5 and the second section 8d and the first section 9c are provided on a second, opposite side of the first cutting part 3 and thus are not visible in Figure 5, but in Fig. 6. The first section 9c is rearward of the first section 8c, and the second section 9d is rearward of the second section 8d, as illustrated in Figs. 5 and 6.

[0036] As can be seen in particular from Figures 6 and 16, after the cutting parts 3, 4 are moved to each other, the second side of the second cutting part 4 is moved at least partially into partial overlap with the first section 8a of the first cutting surface 8A of the first cutting part 3, and the first side of the first31404N1PCT mue / ni / an December 16, 2025cutting part 3 is moved into overlap with the second section 8d of the first cutting surface 8B of the second cutting part 4.

[0037] As illustrated in Figures 2 and 4 as well as Figures 7 and 14, the first section 8a of the first cutting surface 8A of the first cutting part 3 and the second section 8d of the first cutting surface 8B of the second cutting part 4 run on a first side of the cutting plane E and the second section 8b of the first cutting surface 8A of the first cutting part 3 and the first section 8c of the first cutting surface 8B of the second cutting part 4 run on a second side of the cutting plane E.

[0038] When the cutting parts 3, 4 are brought together, the cutting parts 3, 4 are thus interlocked with each other in such a way that the first side of the first cutting part 3, according to Figure 2, partially overlaps the second side of the second cutting part 4 when they move together, but at the same time the first side of the first cutting part 3 also partially retracts behind the second side of the second cutting part 4. The alternating overlapping of parts of the cutting parts 3, 4 over the respective other cutting part 4, 3 can contribute to stabilizing the cutting process. This is further supported by the alternating arrangement of the differently designed cutting surfaces, which are practically diametrically opposite each other with respect to the cutting parts 3, 4 moving towards each other.

[0039] This can also be seen in Figure 7, in which the cutting edge 11 of the second cutting part 4 shown is visible. However, the cutting edge 10 of the first cutting part 3 is also shown in Figure 7 as a dashed line. The change in the cutting edge 10 relative to the cutting edge 11 over the combined length 1 of the cutting edges 10, 11 is evident.31404N1PCT mue / ni / an December 16, 2025

[0040] A significant advantage of the cutting part geometries described here is that they achieve a self-centering effect during the cutting process. No additional measures, such as additional support for the cable, are required to center the cable during the cutting process. Nevertheless, these can be provided. The geometries of the cutting parts described here also make it possible to cut several cable sizes, i.e., cables with different initial diameters, with the same cutting parts. This is the case, at least, if the core of the cable has at least essentially the same diameter for the different sizes.

[0041] In the preferred embodiment, the cutting edges 10, 11 have a doublestepped profile over a length 1 of the cutting edges 10, 11. As shown in Figure 2, in a first area, the partial length h - with reference also to Figure 7 - the cutting edge 10 runs opposite to the second section 8d, on the side of the second section 8d facing away from the second section 9d. In a second, middle area, which can correspond to a partial length h, the cutting edges 10, 11 lie practically congruent on top of each other. In a third area, which may correspond to a partial length I3, the cutting edge 10 runs opposite to the first section 8c, on the side facing away from the first section 9c. The cutting edge 10 thus "sees" the second section 8d over the partial length h and the first section 8c over the partial length I3 when they are superimposed.

[0042] Preferably, and as shown in the embodiments of Figures 1 to 10, each cutting part 3, 4 is formed to be axially symmetrical with respect to the sections 8a and 8d, 9a and 9c, 8b and 8c, and 9a and 9d. If necessary, the first and second cutting surfaces 8A, 8B, 9A, 9B may also be formed to be essentially point-symmetrical. The axial symmetry is given with respect to the axis A, which is represented as a point in Figure 2. Reference should also be made to Figure 18 in this regard. Such cutting parts 3, 4 may be designed to be identical so that they are interchangeable.31404N1PCT mue / ni / an December 16, 2025

[0043] The cutting parts 3, 4 each have the cutting edge 10 or 11. The cutting edges 10 and 11 preferably have a curved course, as in the embodiments shown, in the view according to Figure 2, in which the first section 8a of the first cutting surface 8A and the second section 9b of the second cutting surface 9A are completely visible and undistorted. The first section 8a of the first cutting surface 8A and the second section 9b of the second cutting surface 9A may also be partially straight and partially curved or only straight, preferably with partial lengths of the cutting edges 10 and 11 extending toward each other in a V- shape.

[0044] In any case, two partial lengths, here the partial lengths h and I3, are preferably realized on each cutting part 3, 4. The partial lengths h and I3 are seen here projected in the travel direction r along the travel line V onto a plane perpendicular to the travel direction r along the travel line V.

[0045] The cutting edges 10 and 11 are further preferably formed concavely, as seen in the starting position of the opposite cutting part 3, 4.

[0046] The concave cutting edges 10 and 11 preferably have a maximum depth t approximately in the middle. The depth t is viewed in the direction of the travel line V. The maximum deptht can also be arranged at the cutting plane E.

[0047] The cutting edges 10 and / or 11 may also, as can be seen from Figures 6 and 7, not be formed by the surfaces in an ideally pointed manner, but may have a preferably very narrow edge 14 which may extend approximately at right angles to the cutting plane E.31404N1PCT mue / ni / an December 16, 2025

[0048] As already noted, the cutting edge 10, 11 can be divided into three sections over the cutting edge length 1 in the embodiments shown. In a first partial length h, the cutting edge 10 or 11 is formed by the first cutting surface 8A, 8B on one side and the second cutting surface 9A, 9B on the other side, with regard to the respective sections 8a, 8c, 8b, 8d and 9a, 9c, 9b and 9d. Over a second part of the second partial length h, the cutting edge 10, 11 can also be formed solely by cutting surfaces corresponding to the second cutting surface 9A or 9B, as can be seen in particular from Figure 8. Over the second partial length I2, however, the cutting edge can also be formed, preferably in halves, according to the partial length hor I3. The third partial length I3 already mentioned corresponds again preferably and in the embodiments to the partial length h, whereby on this partial length I3 on the first side of each cutting part 3, 4 the respective other cutting surface than on the partial length h is visible.

[0049] Alternatively, or additionally, at least in the embodiments, the partial length I2 is also formed with a different curvature. Here, a stronger curvature than in the partial lengths h and I3, and more preferably a curvature corresponding to a circular arc, while over the partial lengths h and I2 the curvature is preferably formed deviating from a circular line, but more preferably continuously, without edges or jumps over the length h or I3.

[0050] The curvature over the partial length h and / or I3 may correspond to a partial length of an oval line. The transition from the partial length h to the partial length I2 and / or from the partial length I2 to the partial length I3 may be designed as a point. A more strongly curved region of the first partial length h and the third partial length h, or, if applicable, a more strongly curved region of the oval lines, is preferably assigned to a transition into the second partial length I2.31404N1PCT mue / ni / an December 16, 2025

[0051] As can be seen in particular from the top view shown in Figure 7 , the cutting parts 3, 4 are preferably elongated transversely to the travel direction r along a travel line V or in the direction of an extension of the cutting plane E, with a significantly greater cutting part length L than corresponds to a cutting part depth / cutting part width T. The cutting part depth T is reduced in the representation according to Figure 7, including a retaining element 13 described herein. It can also be measured without this retaining element 13. In practice, even if the cutting parts 3, 4 are preferably and, in the embodiments, formed in one piece and, more preferably, of uniform material with respect to each other, there are two panel-like offset body parts Ki, K2 in the direction of the cutting part length L, which partially overlap in the direction of the cutting part length L.

[0052] The cutting parts 3, 4 further have the aforementioned retaining element 13 in a suitable manner. The cutting parts 3, 4 can be fastened in the cutting head 2 by the retaining element 13. As in the embodiment, the retaining elements 13 can be attached separately to the cutting parts 3, 4for example, by the shown riveting. However, the cutting parts 3, 4 can also be formed directly as one piece with the retaining elements 13. The rivet heads visible in the drawings may also not be present in such a design. In the embodiments, the retaining elements 13 are each formed on the cutting parts 3, 4 in such a way that, in a side view as shown in Figure 3, the retaining elements 13 are both traversed by a vertical line running parallel to the cutting plane E. The retaining elements 13 may also be arranged alternately with respect to the cutting plane E.

[0053] In the embodiment with approximately four cutting parts as shown in Figure 18, each of the cutting parts could be provided with a retaining element 13.31404N1PCT mue / ni / an December 16, 2025

[0054] The cutting parts 3, 4 further preferably have guide projections 12 on their edges, extending in the direction of the travel line V, with which they can be received in corresponding guide receptacles (not shown) of the cutting head 2. In contrast to the cutting parts known from US 6 532790 B2, each cutting part 3 or 4 preferably has a guide projection 12 located on the first side of the cutting plane E and an opposite guide projection 12 located on the second side of the cutting plane as shown for the cutting part 4 in Figure 7.

[0055] As can be seen from Figures 1, 5, 6, 15 and 16, the cutting parts 3, 4 in the cutting device 1 can be moved relative to each other between a starting position and an end position. Preferably, and in the embodiment shown in Figure 6 and 16, the cutting edges 10 and 11 maintain a distance from each other even in the area of the maximum depth t in the end position. In the starting position, the cutting edges 10 and 11 may not overlap, as shown in Figures 1 and 2, but may also already overlap to a certain extent, as shown in Figures 5 and 15. The distance in the end position corresponds to the thickness of the core 6 with regard to the described offset on the cable 5. It is also preferable for the distance to be set greater than the thickness of the core 6 for a given cable 5. It may be provided that conductors 7 which lie directly on the core 6 or are directly adjacent thereto are not cut in order to protect the cutting parts 3, 4, but are instead broken off, for example by hand, which is easy to do in any case with a material such as aluminum.

[0056] The first cutting surface 8A, 8B, also in relation to the sections 8a, 8b, 8c, and 8d, is arranged vertically and parallel to the cutting plane E in a typical arrangement in the cutting device 1 according to Figure 1, with regard to the wedge shape, as shown in particular in Figures 5, 8, and 9.31404N1PCT mue / ni / an December 16, 2025

[0057] The embodiment of Figures 11 to 16 shows cutting parts 3, 4 that are not formed to be axially symmetrical as provided in the first embodiment. Rather, the second cutting surfaces 9 A, 9B are formed differently on the first and second sides of the cutting parts 3, 4. The sections 9a and 9d visible in Figure 11 have different extensions ei, e2, relative to the travel line V. This is illustrated in Figure 13 by the sections 9b and 9c. The different extensions ei, e2 can also be associated with different acute angles a.

[0058] The sections 8b and 8c or 8a and 8d can also differ in terms of axial symmetry, in particular with regard to their thickness and / or their cutting edge geometry.

[0059] For advantageous cutting behavior as specified, it is preferable that the cutting parts 3, 4 are designed to be axially symmetrical.

[0060] As can be seen from a comparison of Figures 10 and 12, for example, the sections 8a and 9a or 9d and 8c or 8a and 9b and 9c and 8d can merge into one another in a stepped manner with stepped edges or also in a rounded manner.The cutting parts 3, 4 can be identical on both sides or different, i.e., stepped on one side and rounded on the other.31404N1PCT mue / ni / an December 16, 2025List of reference symbols1 cutting device 9b second section2 cutting head of the second cutting surface3 first cutting part 9A4 second cutting part 9c first section5 cable of the second cutting surface6 core 9B7 conductor 9d second section8A first cutting surface of the of the cutting surface 9B first cutting part 3 10 cutting edge8B first cutting surface 11 cutting edge of the second cutting part 4 12 guide projection8a first section 13 retaining element of the first cutting surface 8 A 14 edge 8b second section of the first cutting surface 8 A ei first extension8c first section e2 second extension of the first cutting surface 8B 1 cutting edge length 8d second section 11 first partial length of the first cutting surface 8B 12 second partial length 9A second cutting surface 13 third partial length of the first cutting part 3 t depth9B second cutting surface of the second cutting part 4 A axis9a first section E cutting plane of the second cutting surface KI body part9A K2 body partL cutting edge lengthT cutting part depth31404N1PCT mue / ni / an December 16, 2025V travel line a acute angle r travel direction31404N1PCT mue / ni / an December 16, 2025

Claims

Claims1. A device (1) comprising: first and second cutting parts (3, 4) movable along a travel line in a travel direction relative to each other along a cutting plane (E) from a starting position to an end position, each cutting part (3, 4) having a first side, a second opposite side, and a cutting edge (10, 11), the cutting edges (10, 11) being formed by first cutting surfaces (8A, 8B) and second cutting surfaces (9 A, 9B), wherein the cutting parts (3, 4) are arranged on the same side of the cutting plane (E) and the cutting edges (10, 11) of the cutting parts (3, 4) are opposite each other and are formed axially symmetrically with respect to the starting position and with respect to a geometric axis that runs perpendicular to the cutting plane (E) and centrally to a longitudinal extension of the cutting edges (10, 11).

2. The cutting device (1) according to claim 1, wherein each cutting part has both a first section (8b, 8c) that runs on a first side of the cutting plane (E) and a second section (8a, 8d) that runs on the second side of the cutting plane (E).

3. The cutting device (1) according to claim 1 or 2, wherein each cutting edge (10, 11) is formed at a wedge tip of two first cutting surfaces (8A, 8B) and second cutting surfaces (9 A, 9B) that run wedge-shaped to each other in cross-section, wherein the first cutting surface (8A, 8B) of the first and second cutting parts (3, 4) runs essentially parallel to the cutting plane (E) and the second cutting surface (9 A, 9B) of the first and second cutting parts (3, 4) forms an acute angle (a) with the cutting plane (E) in a crosssection in which the cutting plane (E) is represented as a line.31404N1PCT mue / ni / an December 16, 20254. The cutting device (1) according to claim 1, wherein on both cutting parts (3, 4), a first section and second section (9a, 9d) of the second cutting surface (9 A, 9B) run on the first side of the cutting plane (E) and first and second sections (9b, 9c) of the second cutting surface (9 A, 9B) run on the second side of the cutting plane (E).

5. The cutting device according to claim 1, wherein the first cutting surface (8A, 8B) on both cutting parts (3, 4) extends over a first partial length (h) of a cutting edge length (1) on the first side and extends over a second partial length (I3) of the cutting edge length (1) on the second side of the cutting plane (E), so that when the cutting parts (3, 4) move together, the second side of the second cutting part (4) moves in overlap to the first section (8a) of the first cutting surface (8A) of the first cutting part (3) and the first side of the first cutting part (3) moves in overlap with the second section (8b) of the first cutting surface (8B) of the second cutting part (4).

6. The cutting device (1) according to claim 1, wherein each cutting part (3, 4) is point-symmetrical or axis-symmetrical with respect to the first and second cutting surfaces (8 A, 8B, 9 A, 9B).

7. The cutting device (1) according to one of the preceding claims, wherein the cutting edges (10, 11) have a concave curved profile.

8. The cutting device (1) according to claim 7, wherein the curved cutting edge (10, 11) has a maximum depth (t) approximately in a middle relative to the cutting edge length (1).31404N1PCT mue / ni / an December 16, 20259. Cutting device (1) according to one of the preceding claims, characterized in that the cutting parts (3, 4) in the cutting device (1) can be moved relative to each other between an initial position and an end position.

10. Cutting device (1) according to one of the preceding claims, characterized in that the cutting edges (10, 11) maintain a distance from each other in the area of the maximum depth (t) even in the end position.

11. The cutting device (1) according to one of the preceding claims, wherein the travel line (V) is a straight line.

12. A cutting device (1) comprising: first and second cutting parts (3, 4) movable along a travel line in a travel direction relative to each other along a cutting plane from an starting position to an end position, each cutting part (3, 4) having a first section (8a, 8d) configured to move on a first side of the cutting plane (E) and a second section (8b, 8c) configured to move on a second side of the cutting plane (E).

13. The cutting device (1) according to claim 12, wherein each cutting edge (10, 11) is formed at a wedge tip of two first cutting surfaces (8A, 8B) and second cutting surfaces (9 A, 9B) that run wedge-shaped to each other in cross-section, wherein the first cutting surface (8A, 8B) of the first and second cutting parts (3, 4) runs essentially parallel to the cutting plane (E) and the second cutting surface (9 A, 9B) of the first and second cutting parts (3, 4) forms an acute angle (a) with the cutting plane (E) in a crosssection in which the cutting plane (E) is represented as a line.

14. The cutting device according to claim 12, wherein the first cutting surface (8A, 8B) on both cutting parts (3, 4) extends over a first partial length (h) of31404N1PCT mue / ni / an December 16, 2025a cutting edge length (1) on the first side and extends over a second partial length (I3) of the cutting edge length (1) on the second side of the cutting plane (E), so that when the cutting parts (3, 4) move together, the second side of the second cutting part (4) moves in overlap to the first section (8a) of the first cutting surface (8A) of the first cutting part (3) and the first side of the first cutting part (3) moves in overlap with the second section (8b) of the first cutting surface (8B) of the second cutting part (4).

15. The cutting device (1) according to claim 12, wherein each cutting part (3, 4) is point-symmetrical or axis-symmetrical with respect to the first and second cutting surfaces (8 A, 8B, 9 A, 9B).

16. The cutting device (1) according to claim 12, wherein the cutting edges (10, 11) have a concave curved profile.

17. The cutting device (1) according to claim 16, wherein the curved cutting edge (10, 11) has a maximum depth (t) approximately in a middle relative to the cutting edge length (1).

18. The cutting device (1) according to claim 12, wherein the cutting parts (3, 4) in the cutting device (1) can be moved relative to each other between an initial position and an end position.

19. The cutting device (1) according to claim 12, wherein the cutting edges (10, 11) maintain a distance from each other in an area of the maximum depth (t) even in the end position.

20. The cutting device (1) according to claim 12, wherein the travel line (V) is a straight line.31404N1PCT mue / ni / an December 16, 2025

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