WO2013159959A1

WO2013159959A1 - Cutting strand segment

Info

Publication number: WO2013159959A1
Application number: PCT/EP2013/053854
Authority: WO
Inventors: Milan Bozic
Original assignee: Robert Bosch Gmbh
Priority date: 2012-04-25
Filing date: 2013-02-27
Publication date: 2013-10-31
Also published as: DE102012206760A1

Abstract

The invention relates to a cutting strand segment of a power cutting tool, comprising at least one cutting element (14a; 14b; 14c; 4d) having at least one cutting edge (16a; 16b; 16c; 16d) and at least two cutting edge lateral faces (18a; 20a; 18b, 20b; 18c; 18d) delimiting the cutting edge (16a; 16b; 16c; 16d) and running along a direction that is at least substantially perpendicular to the cutting plane. According to the invention, the cutting edge lateral faces (18a; 20a; 18b, 20b; 18c; 18d) are inclined with respect to each other.

Description

Cutting strand segment

State of the art

There are already known cutting strand segments of a power-tool parting device which comprise a cutting element which has a cutting edge and two cutting edge side surfaces delimiting the cutting edge along a direction extending at least substantially perpendicular to a cutting plane.

Disclosure of the invention

The invention is based on a cutting strand segment of a machine tool cutting device having at least one cutting element which has at least one cutting edge and at least two cutting edge side surfaces delimiting the cutting edge along a direction extending at least substantially perpendicular to a cutting plane.

It is proposed that the cutting edge side surfaces are inclined relative to each other. A "cutting strand segment" is to be understood here in particular as a segment of a cutting strand which is intended for

Forming the cutting strand to be connected to other segments of the cutting strand. Preferably, the cutting strand segment is formed as a chain link, which is connected to the formation of the cutting strand preferably designed as a cutting chain with other designed as chain links Schneidstrangseg- elements. Here, the cutting strand segment as a driving member, as a connecting member, as a cutting member, etc. of a cutting chain may be formed. The cutting strand can in this case as a single-lance, two-lobes or as be formed dreilaschige cutting chain. The cutting element can be designed, in particular, as a half-bit tooth, as a full-tooth tooth, as a scratcher tooth, etc., or as a roof tooth, as a hump tooth, as a standard tooth, etc. However, it is also conceivable for the cutting element to be another, to a person skilled in the art The term "cutting edge" should in particular define here an edge of the cutting element which is intended to remove workpiece particles of the workpiece during machining of a workpiece by means of the cutting element. In particular, the cutting edge is provided for a machining of a workpiece surface of a workpiece to be machined. The cutting edge preferably runs at least substantially transversely to a cutting plane of the cutting strand segment. The term "at least essentially transversal" is to be understood here as meaning, in particular, an alignment of a plane and / or a direction relative to a further plane and / or a further direction, which is preferably a parallel orientation of the plane and / or the direction relative to The term "cutting plane" should in particular define a plane in which the

Cutting strand segment is moved to a machining of a workpiece in at least one operating state. A "cutting edge side surface" is to be understood here as meaning, in particular, a surface of the cutting element which is arranged directly adjacent to the cutting edge on the cutting element and which delimits the cutting edge along a direction extending at least substantially perpendicular to a cutting plane of the cutting element, which extends starting from the cutting edge along a direction extending at least substantially perpendicular to the cutting edge over a maximum distance of 2 mm, preferably over a maximum distance of 1, 5 mm and more preferably over a maximum distance of 1 mm. The term "substantially perpendicular" should in particular define an orientation of a direction relative to a reference direction, the direction and the

Reference direction, in particular in one plane, include an angle of 90 ° and the angle has a maximum deviation of in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.

The expression "inclined relative to one another" is intended here in particular to mean an arrangement of two elements, in particular of the cutting edge side surfaces, relative to one another. Define nander, wherein the elements are arranged deviating from an at least substantially parallel arrangement of the elements relative to each other. "Substantially parallel" is to be understood here as meaning, in particular, an alignment of a direction relative to a reference direction, in particular in a plane, wherein the direction relative to the reference direction is a deviation, in particular less than 8 °, advantageously less than 5 ° and particularly advantageous The cutting element preferably has a trapezoidal shape, at least in the region of the cutting edge, viewed in a plane extending at least substantially perpendicular to the cutting plane

Cross-sectional shape, in particular a deviating from a rectangular trapezoidal trapezoidal cross-sectional shape. Preferably, a base side of the trapezoidal cross-sectional shape of the cutting edge is formed, wherein the cutting edge side faces form legs of trapezoidal cross-sectional shape, each connected at one end facing away from the cutting edge by a thought, at least substantially parallel to the cutting edge extending further base side of the trapezoidal cross-sectional shape , Particularly preferably, the cutting edge side surfaces are machined to achieve the trapezoidal cross-sectional shape by means of a grinding process. However, it is also conceivable that the cutting edge side surfaces to achieve the trapezoidal cross-sectional shape by means of another, a

Those skilled in the art appear appropriate as a reasonable process, such as a separation process, a turning process, a milling process, a lapping process, etc. Thus, the cutting element preferably in the region of the cutting edge ground cutting edge side surfaces. By means of the design of the cutting strand segment according to the invention, advantageously, a high cut edge quality can be achieved. As a result, advantageously a high surface quality of the cutting edge can be achieved. It can thus structurally simple a cutting edge can be realized, which advantageously allows a low tearing of a cutting surface of the workpiece during machining of a workpiece.

Furthermore, it is proposed that the cutting edge side surfaces, viewed along the direction running at least substantially perpendicular to the cutting plane, are arranged on two opposite sides of the cutting element. Thus, structurally simple, a cutting element release, in particular a decoupled from a cabinet of the cutting element cutting element release, be made possible, which is a clamping of the Cutting strand segments during a machining of a workpiece in a kerf can advantageously largely prevent.

It is further proposed that the cutting edge side surfaces are inclined relative to a center plane of the cutting element. Thus, the cutting edge side surfaces are preferably inclined relative to each other and relative to the median plane of the cutting element. A "median plane" is to be understood here as meaning, in particular, a plane extending along an at least substantially parallel direction to the cutting plane, at least by the cutting element.

In addition, it is proposed that the cutting strand segment comprises at least one cutting carrier element on which the cutting element is arranged, wherein a center plane of the cutting element relative to an outer surface of the cutting element

Cutter carrier element is inclined. Thus, the cutting element is preferably arranged limited to the cutter support member. In an alternative embodiment of the cutting strand segment, the median plane of the

Cutting elements preferably at least substantially parallel to the outer surface of the cutter support element. A "blade carrier element" is to be understood here as meaning, in particular, an element on which at least one cutting element is arranged for severing and / or removing material particles of a workpiece to be machined By means of the embodiment of the cutting-edge segment according to the invention, it is possible to constructively realize a setting of the cutting element in a structurally simple manner.

Advantageously, the cutting strand segment at least one

Cutting carrier element, which is integrally formed with the cutting element. By "one-piece" is to be understood here in particular as being at least materially bonded, for example by a welding process, an adhesive process, an injection molding process and / or another process which appears expedient to a person skilled in the art, and / or advantageously shaped in one piece, for example by a production from a casting and / or by a production in a one- or multi-component injection molding process and advantageously from a single blank. element and the cutter support element from a single blank punched. However, it is also conceivable that the cutting element and the

Cutting carrier element by means of another, a person skilled in the sense appearing manner integrally formed. As a result of the one-piece design of the cutting element and the cutter support element assembly costs and costs can be saved particularly advantageous. Particularly preferably, the further cutting element is likewise formed integrally with the cutter carrier element. Thus, a robust can be advantageous

Cutting strand segment can be achieved.

Furthermore, it is proposed that the cutting strand segment has a maximum weight that is less than 1 g. In particular, the cutting strand segment has a maximum weight which is less than 0.8 g, preferably less than 0.5 g and particularly preferably less than 0.2 g. It can be advantageously achieved a light cutting strand segment.

It is further proposed that the cutting strand segment has a maximum volume which is smaller than 15 mm ³ . Preferably, the cutting element together with the cutter support element has a maximum volume which is smaller than 10 mm ³ and particularly preferably smaller than 5 mm ³ . It can be advantageously realized a cost-effective production of the cutting strand segment, with a low material usage is necessary.

Furthermore, the invention is based on a power-tool parting device with at least one cutting strand, which at least one according to the invention

Cutting strand segment comprises, and with at least one guide unit to a guide of the cutting strand, wherein the guide unit and the cutting strand together form a closed system. A "cutting strand" is to be understood here as meaning, in particular, a unit of cutting strand segments which is intended to locally neutralize an atomic cohesion of a workpiece to be machined, in particular by means of a mechanical separation and / or by means of a mechanical removal of material particles of the workpiece For example, the cutting strand is intended to separate the workpiece into at least two physically separate parts and / or at least partially separate and / or remove material particles of the workpiece from a surface of the workpiece. In this case, the cutting strand segments can be releasably connected, for example by means of a chain lock, etc., and / or inextricably linked to one another. However, it is also conceivable that the cutting strand is designed as a cutting band and / or cutting rope. In an embodiment of the cutting strand as

Cutting band and / or as a cutting rope, the cutting strand segments are fixed directly to the cutting band and / or on the cutting cable. The cutting-strand segments may in this case be spaced apart from one another and / or arranged in direct contact with one another on the cutting band and / or on the cutting rope. A "guide unit" is to be understood here as meaning, in particular, a unit which is provided to exert a constraining force on the cutting strand at least along a direction perpendicular to a cutting direction of the cutting strand, in order to allow the cutting strand to move along the cutting direction The cutting strand, viewed in a cutting plane, is preferably guided along an entire circumference of the guide unit through the guide unit by means of the guide element, in particular the guide groove. Here, in particular, a system should be defined which comprises at least two components which are assigned by means of a

Cooperating in a disassembled state of the system from a system superordinate system, such as a machine tool, maintain functionality and / or which are connected captive in the disassembled state. Preferably, the at least two components of the closed system are at least substantially inseparably connected with one another for an operator. By "at least substantially insoluble" should be understood in particular a combination of at least two components that only with the aid of separation tools, such as a saw, in particular a mechanical saw, etc., and / or chemical release agents, such as solvents, etc. , are separable from each other.

Furthermore, the invention is based on a machine tool having at least one coupling device for the positive and / or non-positive coupling with a machine tool separating device according to the invention.

The machine tool is preferably designed as a portable machine tool. Under a "portable machine tool" is here in particular a Machine tool, in particular a hand tool, can be understood, which can be transported without transport machine by an operator. In particular, the portable power tool has a mass which is less than 40 kg, preferably less than 10 kg and particularly preferably less than 5 kg. The machine tool and the machine tool separating device preferably together form a machine tool system. By means of the inventive design of the machine tool can advantageously be achieved a machine tool that is particularly advantageous for a wide range of applications.

The cutting strand segment according to the invention, the machine tool separating device according to the invention, the machine tool according to the invention and / or the machine tool system according to the invention should / should not be limited to the application and embodiment described above. In particular, the cutting strand segment according to the invention, the machine tool separating device according to the invention, the machine tool according to the invention and / or the machine tool system according to the invention can have a different number of individual elements, components and units to a performance described herein.

drawing

Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

1 shows a machine tool according to the invention and a machine tool separating device according to the invention, which together form a machine tool system according to the invention, in a schematic representation, 2 is a detailed view of the machine tool separating device according to the invention in a schematic representation,

3 is a detailed view of a cutting strand segment according to the invention in a schematic representation,

4 is a detailed view of a portion of a cutting edge of a

Cutting elements of the cutting strand segment according to the invention in a direction opposite to a cutting direction aligned plan view in a schematic representation,

Fig. 5 is a detail view of an alternative invention

Cutting strand segments in a schematic representation,

Fig. 6 is a detailed view of another, alternative cutting strip segment according to the invention in a schematic representation and

7 shows a detailed view of a further, alternative cutting strand segment according to the invention in a schematic representation.

Description of the embodiments

Figure 1 shows a machine tool system comprising a machine tool 36a and a machine tool separator 12a. The machine tool 36a is designed here as a portable machine tool. The machine tool separating device 12a comprises at least one cutting strand 32a having at least one cutting strand segment 10a and at least one guiding unit 34a for guiding the cutting strand 32a, wherein the guiding unit 34a and the cutting strand 32a together form a closed system. The machine tool 36a has at least one coupling device 38a for the positive and / or non-positive coupling with the machine tool separating device 12a. In this case, the coupling device 38a can be designed as a bayonet closure and / or as another coupling device that appears meaningful to a person skilled in the art. Furthermore, the machine tool 36a has a machine tool housing 40a, which encloses a drive unit 42a and a gear unit 44a of the machine tool 36a. The drive unit 42a and the gear unit 44a are for generating a transferable to the power-tool parting device 12a drive moments in a manner already known to a person skilled in the art. The gear unit 44a is formed as an angle gear. The drive unit 42a is designed as an electric motor unit. However, it is also conceivable that the drive unit 42a and / or the gear unit 44a have another configuration that appears appropriate to a person skilled in the art. The drive unit 42a is provided to drive the cutting strand 32a of the power-tool parting device 12a in at least one operating state via the gear unit 44a. Here, the cutting strand 32a is moved in a cutting plane in the guide unit 34a of the machine tool separating device 12a along a cutting direction 46a of the cutting strand 32a in the guide unit 34a.

FIG. 2 shows the power-tool parting device 12a in a state decoupled from the coupling device 38a of the machine tool 36a. The machine tool separating device 12a has the cutting strand 32a and the guide unit 34a, which together form a closed system. The cutting strand 32a is guided by means of the guide unit 34a. For this purpose, the guide unit 34a has at least one guide element designed as a guide groove (not shown here in detail), by means of which the cutting strand 32a is guided. Here, the cutting strand 32a is guided by the guide groove bounding edge regions of the guide unit 34a. However, it is also conceivable that the guide element in another, a person skilled in the sense appearing manner, such as rib-like Anformung on the guide unit 34 a, in a recess on the

Cutting strand 32a engages, is formed. The cutting strand 32a comprises a total of a plurality of interconnected cutting strand segments 10a.

To drive the cutting strand 32a, the power-tool parting device 12a or the machine tool 36a has a torque-transmitting element

48a, which is connectable for transmission of forces and / or torques on the cutting strand 32a with the drive unit 42a and / or the gear unit 44a. In an embodiment of the machine tool 36a with the torque transmission element (not shown here in detail), the torque transmission element of the machine tool 36a is displaced during a coupling process. ment of the power-tool parting device 12a and the coupling device 38a connected to the cutting strand 32a. In an embodiment of the machine tool separating device 12a with the torque transmission element 48a, the torque transmission element 48a and the cutting strand 32a are engaged even after decoupling from the coupling device 38a. For a coupling of the torque-transmitting element 48a and the drive unit 42a and / or the gear unit 44a formed with the power-tool parting device 12a, the torque-transmitting element 48a has a coupling recess 50a, into which a pinion (not shown here) of the drive unit 42a and / or a Gear (not shown here) and / or a toothed shaft (not shown here) of the gear unit 44a engages in an assembled state. The coupling recess 50a is concentrically disposed in the torque transmitting member 48a. Further, the torque transmitting member 48a is formed as a gear. The torque transmitting member 48a is at least partially supported in the guide unit 34a. Here, the torque transmission element 48a, viewed along a direction perpendicular to the cutting plane, at least partially disposed between outer surfaces 52a, 54a of the guide unit 34a in a recess 56a of the guide unit 34a. Further, the torque transmitting member 48a is rotatable about a rotation axis 58a in the guide unit

34a stored.

FIG. 3 shows a detailed view of the cutting-strand segment 10a of the cutting strand 32a of the power-tool parting device 12a. The cutting-strand segment 10a comprises at least one cutting element 14a, which is at least one

Cutting edge 16a and at least two the cutting edge 16a along a at least substantially perpendicular to a cutting plane extending direction limiting cutting edge side surfaces 18a; 20a (FIG. 4). In this case, the cutting edge extends transversely to the cutting plane at least in the essence. The cutting edge side surfaces 18a, 20a are in a region of the

Cutting elements arranged 14a extending from the cutting edge 16a along at least substantially perpendicular to the cutting edge 16a extending direction 60a over a maximum distance of 1, 5 mm. In addition, the cutting edge side surfaces 18a; 20a inclined relative to each other. In this case, the cutting edge side surfaces 18a close; 20a, considered in one at least substantially perpendicular to the cutting plane extending plane, an angle α. The angle α has an angular dimension which is smaller than 120 °. The cutting edge side surfaces 18a; 20a, viewed along the at least substantially perpendicular to the cutting plane direction, arranged on two opposite sides 22a, 24a of the cutting element 14a.

Further, the cutting edge side surfaces 18a, 20a are inclined relative to a center plane 26a of the cutting element 14a (Figure 4). The center plane 26a of the cutting element 14a in this case runs at least substantially parallel to an outer surface 30a of a cutter carrier element 28a of the cutting strand segment 10a. In order to produce an inclination of the cutting edge side surfaces 18a, 20a relative to each other and relative to the median plane 26a, the cutting element 14a is laterally ground during a process for manufacturing the cutting strand segment 10a by means of a grinding process in the region of the cutting edge 16a until the cutting edge side surfaces 18a, 20a have a desired one Have inclination.

Furthermore, the cutting strand segment 10a at least the

Cutting support member 28a, on which the cutting element 14a is arranged. The cutter carrier element 28a is in this case formed integrally with the cutting element 14a. Thus, the cutting edge side surfaces 18a, 20a are inclined relative to each other relative to the center plane 26a of the cutting element 14a and relative to the outer surface 30a of the cutter support element 28a. The cutting strand segment 10a has a maximum weight that is less than 1 g. Here, a maximum weight of the cutting strand segment 10a is less than 0.2 g. 10a In addition, the cutting strand segment to a maximum volume that is less than 15 mm ^3. In particular, the maximum volume of the

Cutting strand segment 10a smaller than 5 mm ³ .

Furthermore, the cutter support element 28a has at least one segment guide element 62a, which is provided to prevent a movement of the

Cutting edge member 28a, viewed in a arranged in the guide unit 34a state in a direction facing away from the guide unit 34a direction, at least along the at least substantially parallel to the cutting plane extending direction. The segment guide element 62a is formed by a transverse extension which is at least essentially vertical. extends right to the cutting plane and the outer surface 30a. Here, the segment guide member 62a defines a longitudinal groove. The segment guide element 62a is intended to cooperate with the segmental guide elements (not shown here in detail) arranged on the inner wall of the guide unit 34a facing the cutter support element 28a and designed as a rib or punching. The segment counter guide elements are formed corresponding to the segment guide element 62a. In addition, the cutter support member 28a has a compressive force transfer surface 64a. The pressure force transmission surface 64a is provided to support pressure forces, which act on the cutting strand 32a during machining of a workpiece (not shown here in detail), by means of cooperation with a pressure force absorption region (not shown here in detail) of the guide unit 34a. The pressure force receiving region of the guide unit 34a is arranged here, viewed along a direction extending at least substantially perpendicular to the cutting plane of the cutting strand 32a, between the outer surfaces 52a, 54a of the guide unit 34a, which extend at least substantially parallel to one another.

The cutter support member 28a further includes a drive surface 66a which is adapted to cooperate with drive surfaces of the torque transmitting member 48a to drive the cutting string 32a. The drive surfaces of the torque transmission element 48a are formed here as tooth flanks. The drive surface 66a of the cutter support member 28a is formed corresponding to the drive surfaces of the torque transmitting member 48a. When the cutting strand 32a is driven, the tooth flanks of the torque transmission element 48a are temporarily in contact with the drive surface 66a of the blade carrier element 28a in order to transmit drive forces.

Furthermore, the cutting strand 32a has at least one connecting element 68a, which is formed integrally with the cutter support element 28a. The connecting element 68a is bolt-shaped and extends at least substantially perpendicular to the cutting plane. In this case, the connecting element 68a is provided, by means of an interaction with a Connecting recess of another cutter support member (not shown here) of another cutting strand segment of the cutting strand 32a to realize a positive connection between the cutter support member 28a and the other cutter support element. The

Cutter carrier element 28a likewise comprises a connecting recess 70a, in which, to form the cutting strand 32a, a further connecting element (not shown here in detail) of the cutting strand 32a can be arranged. Thus, each cutter support element of the cutting strand 32a comprises at least one connecting element and at least one connecting recess. Thus, the cutter support members of the cutting string 32a are pivotally supported relative to one another by means of an interaction of the connecting elements and the connecting recesses. Furthermore, the cutter support element 28a has at least one transverse securing element 72a, which is provided to secure the cutter carrier element 28a in a mounted state as far as possible against a transverse movement relative to the further cutter carrier element of the cutting strand 32a. The transverse securing element 72a is arranged on the connecting element 68a. However, it is also conceivable for the transverse securing element 72a to be arranged on another area of the cutter carrier element 28a that appears appropriate to a person skilled in the art, for example in a coupling region in which the connecting element 68a is arranged, and in a coupling of the cutter carrier element 28a to one another cutter support element an outer surface of the other

Cutting carrier element at least partially touched. In the figures 5 to 7 alternative embodiments are shown. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, the letters a to d are added to the reference numerals of the embodiments. The following description is essentially limited to the differences from the first described in FIGS. 1 to 4

Embodiment, with respect to the same components, features and functions can be made to the description of the first embodiment in Figures 1 to 4. FIG. 5 shows a detailed view of an alternative cutting-edge segment 10b of a cutting strand 32b of a power-tool parting device (not shown here in detail). The cutting strand segment 10b comprises at least one cutting element 14b which has at least one cutting edge 16b and at least two cutting edge side faces 18b, 20b delimiting the cutting edge 16b along a direction extending at least substantially perpendicular to a cutting plane. The cutting edge side surfaces 18b, 20b are inclined relative to each other. In addition, the cutting edge side surfaces 18b, 20b are inclined relative to a center plane 26a of the cutting element 14b. Furthermore, the cutting strand segment 10b has at least one cutter support element 28b, on which the cutting element 14b is arranged, wherein the center plane 26b of the cutting element 14b relative to an outer surface 30b of the

Cutter support element 28b is inclined. Thus, the cutting element 14b is disposed relative to the outer surface 30b set on the cutter support member 28b. With regard to further features of the cutting strand segment 10b, reference may be made to the exemplary embodiment described in FIGS. 1 to 4.

FIG. 6 shows a detailed view of an alternative cutting-edge segment 10c of a cutting strand 32c of a power-tool parting device (not shown here in detail). The cutting strand segment 10c comprises at least one

Cutting element 14c, the at least one cutting edge 16c and at least two the cutting edge 16c along an at least substantially perpendicular to a cutting plane extending direction limiting cutting edge side surfaces 18c (in Figure 6, only one cutting edge side surface 18c is shown). The cutting edge side surfaces 18c are inclined relative to each other analogously to the embodiment described in Figures 1 to 4. In addition, the cutting edge side surfaces 18c are inclined relative to the embodiment described in Figures 1 to 4 relative to a center plane 26c of the cutting element 14c.

The cutting strand segment 10c further has a cutter support element 28c, which comprises at least one connecting element 68c to form the cutting strand 32c. The connecting element 68c is integral with the

Cutting edge support element 28c formed. Here, the connecting element 68c is formed as a longitudinal extension of the cutter support element 28c. The longitudinal extension is hook-shaped. In this case, the longitudinal extension deviates from a rod-shaped extension, to which a circular positive-locking element is formed and / or deviating from a semicircular extension. Furthermore, the connecting element 68c designed as a longitudinal extension has a transverse securing region 74c on one side. The transverse protection region 74c is provided to provide, by means of an interaction with at least one transverse securing element, one with the

Cutting support element 28c connected another cutting support element (not shown here in detail) of another cutting strand segment of the

Cutting strand 32c, a transverse movement of the cutter support member 28c along at least two oppositely directed directions in a coupled state relative to the other cutter support element at least to prevent as far as possible. Here, the transverse securing portion 74c is formed as a rib. However, it is also conceivable for the transverse securing region 74c to have another configuration which appears expedient to a person skilled in the art, such as an embodiment as a groove, etc. The transverse securing region 74c is arranged on a side of the connecting element 68c facing the cutting carrier element 28c in one piece ,

Furthermore, the cutter carrier element 28c has two transverse securing elements 72c, 76c, which are provided to cooperate with the further cutter carrier element in a coupled state of the cutter carrier element 28c with a transverse securing region of the further cutter carrier element. The transverse securing elements 72c, 76c are each arranged in an edge region of the cutter carrier element 28c delimiting a connecting recess 70c of the cutter carrier element 28c. Here, the transverse securing elements 72c, 76c are formed integrally with the cutter support element 28c. The transverse securing elements 72c, 76c are integrally formed in each case by means of an embossing process on the cutter support element 28c.

FIG. 7 shows a further, alternative cutting strand segment 10d of a

Cutting strand 32d a machine tool separating device (not shown here). The cutting strand segment 10d comprises at least one cutting element 14d, the at least one cutting edge 16d and at least two Having cutting edge 16d along an at least substantially perpendicular to a cutting plane extending direction limiting cutting edge side surfaces 18d (in Figure 7, only one cutting edge side surface 18d is shown). The cutting edge side surfaces 18d are inclined relative to each other analogously to the embodiment described in Figures 1 to 4. In addition, the cutting edge side surfaces 18d are inclined relative to the embodiment described in FIGS. 1 to 4 relative to a center plane 26d of the cutting element 14d. Furthermore, the cutting strand segment 10d comprises a cutter support element 28d, which for forming the cutting strand 32d a bolt-shaped connecting element 68d and a connecting recess 70d, into which a bolt-shaped connecting element (not shown here) of another cutter support element (not shown here) of another cutting strand segment of the cutting strand 32d can be introduced. However, it is also conceivable that the cutter support element 28d is decoupled from the connecting element 68d and instead has two connecting recesses 70d into which a bolt-shaped connecting element can be inserted for forming the cutting strand 32d. In addition, this includes

Cutting edge support element 28d at least one segment guide element 62d. Furthermore, the cutter support element 28d comprises a triangular drive region 78d. In this case, the segment guide element 62d is arranged in the drive region 78d. Furthermore, a drive surface 66d of the cutter support element 28d is arranged in the drive region 78d.

Claims

claims

1 . A cutting string segment of a power tool separating apparatus, comprising at least one cutting element (14a; 14b; 14c; 14d), the at least one cutting edge (16a; 16b; 16c; 16d) and at least two the cutting edge (16a; 16b; 16c; 16d) along at least one substantially Having cutting edge side surfaces (18a; 20a; 18b, 20b; 18c; 18d) delimiting perpendicularly to a cutting plane, characterized in that the cutting edge side surfaces (18a; 20a; 18b, 20b; 18c; 18d) are inclined relative to each other.

2. The cutting strand segment according to claim 1, characterized in that the cutting edge side surfaces (18a; 20a; 18b, 20b; 18c; 18d) viewed along the at least substantially perpendicular to the cutting plane direction, on two opposite sides (22a, 24a, 22b , 24b, 22c, 22d) of the cutting element (14a, 14b, 14c, 14d).

3. Cutting strand segment according to one of the preceding claims, characterized in that the cutting edge side surfaces (18a; 20a; 18b, 20b; 18c; 18d) relative to a median plane (26a; 26b) of the cutting element (14a; 14b; 14c; 14d) are inclined.

4. A cutting strand segment according to any one of the preceding claims, characterized by at least one cutter support element (28a; 28b; 28c; 28d) on which the cutting element (14a; 14b; 14c; 14d) is arranged, wherein a median plane (26a; 26b) is provided. the cutting element (14a; 14b; 14c; 14d) relative to an outer surface (30a; 30b; 30c; 30d) of the cutting element (14a;

Cutter support element (28a; 28b; 28c; 28d) is inclined.

5. Cutting-strand segment according to one of the preceding claims, characterized by at least one cutter carrier element (28a; 28b; 28c;

28d) integrally formed with the cutting element (14a; 14b; 14c; 14d).

6. cutting strand segment according to any one of the preceding claims, characterized by a maximum weight, which is less than 1 g.

7. cutting strand segment according to any one of the preceding claims, characterized by a maximum volume which is smaller than 15 mm. ³

8. A machine tool separating device having at least one cutting strand (32a), which comprises at least one cutting strand segment according to one of the preceding claims, and at least one guide unit (34a) for guiding the cutting strand (32a), wherein the guide unit (34a) and the cutting strand (32a ) together form a closed system.

9. Machine tool with at least one coupling device (38a) for the positive and / or non-positive coupling with a machine tool separating device according to claim 8.

10. Machine tool system with at least one machine tool according to claim 9 and with at least one machine tool separating device according to claim 8.