Method for producing a sawing device, sawing device and saw blade

Abstract

The invention relates to a method for producing a sawing device (12; 12a; 12b; 12c) for an oscillating multifunctional tool (14), wherein at least one saw tooth (16; 16a; 16b; 16c) is formed from a blank of the sawing device (12; 12a; 12b; 12c) by means of a machining device. According to the invention, in at least one method step for forming the at least one saw tooth (16; 16a; 16b; 16c), an advancing direction (18; 18a; 18b; 18c) of the sawing device (12; 12a; 12b; 12c) and an advancing direction (20; 20a; 20b; 20c) of the machining device are oriented obliquely to each other.

Description

[0001] Description

[0002] Method for producing a sawing device and sawing device and saw blade

[0003] State of the art

[0004] A method for producing a sawing device for an oscillating multi-function tool has already been proposed, wherein at least one sawtooth is formed from a blank of the sawing device by means of a cutting device.

[0005] Disclosure of the invention

[0006] The invention is based on a method for producing a sawing device for an oscillating multi-function tool, wherein at least one sawtooth is formed from a blank of the sawing device by means of a cutting device.

[0007] It is proposed that, in at least one method step of the method for forming the at least one sawtooth, a feed direction of the sawing device and a feed direction of the cutting device are aligned obliquely to one another. The blank and the sawing device preferably each have a, in particular the same, maximum longitudinal extent in a longitudinal direction which runs at least substantially perpendicular to the feed direction of the sawing device. The sawing device is preferably provided to execute a pivoting movement in a pivot plane spanned by the longitudinal direction and the feed direction of the sawing device. The oscillating multi-function tool is preferably provided to execute the pivoting movement of the sawing device at a maximum frequency of more than 5,000 oscillations per minute, preferably more than 10,000 oscillations per minute.The blank and the sawing device preferably each have one, in particular the same, maximum transverse extent in a cutting width direction, which runs at least substantially perpendicular to the longitudinal direction and to the feed direction of the sawing device. The maximum transverse extent of the sawing device preferably defines a cutting width of the sawing device. The blank and the sawing device preferably each have a maximum vertical extent, which runs at least substantially parallel to the feed direction of the sawing device. The maximum vertical extent of the sawing device is typically smaller than or, in particular, equal to the maximum vertical extent of the blank.“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 has a deviation from the reference direction of, in particular, less than 8°, advantageously less than 5° and particularly advantageously less than 2°.

[0008] The expression “substantially perpendicular” is intended here in particular to define an orientation of a direction relative to a reference direction, wherein the direction and the reference direction, in particular viewed in a projection plane, enclose 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 maximum longitudinal extent of the blank and / or the sawing device is preferably greater, in particular at least by a factor of 2, preferably at least by a factor of 5, in particular by more than a factor of 10, than the maximum transverse extent and the maximum vertical extent of the blank or the sawing device. The maximum transverse extent of the blank and / or the sawing device can be greater than, equal to, or less than the maximum vertical extent of the blank or the sawing device.The blank is preferably prism-shaped, in particular cuboid-shaped, with a cross-sectional plane perpendicular to the longitudinal direction preferably being rectangular or trapezoidal. With a trapezoidal cross-section, the cutting edge of the at least one sawtooth is preferably formed on the longer of the parallel edges of the trapezoidal cross-section. The blank can be made of a metal matrix composite material, in particular a hard metal or a cermet, or a steel, in particular a tool steel or a high-speed steel.

[0009] Preferably, in at least one method step of the method, a plurality of saw teeth are formed from the blank. The saw teeth are preferably left rigidly connected to one another via a base body of the sawing device, which is formed from the blank at the same time as the saw teeth. The base body and the saw teeth are preferably arranged one behind the other in the feed direction of the sawing device. The saw teeth are preferably formed one behind the other in at least one row of teeth running in the longitudinal direction. The saw teeth can be formed in the feed direction of the sawing device with a maximum tooth height that is the same for all saw teeth, in particular up to a manufacturing tolerance, or that is different for at least two saw teeth.In a design with different maximum tooth heights, these preferably decrease continuously or in steps from a center of the maximum longitudinal extent of the sawing device to the ends of the sawing device in the longitudinal direction. Alternatively or additionally, the base body has an inhomogeneous height extension along the longitudinal direction in the feed direction of the sawing device, in particular in the form of a curvature, so that the saw teeth extend from the base body to different distances in the feed direction. In particular, a cutting edge of the sawing device can be straight, curved, or trapezoidal.

[0010] A grinder or milling machine is preferably used as the cutting tool. The term "obliquely aligned" directions preferably means that these directions enclose a flat angle in a plane spanned by these directions, which angle is not equal to 0° and not equal to an integer multiple of 90°. Preferably, with an oblique alignment of the feed directions, the feed direction of the cutting tool and a plane perpendicular to the feed direction of the sawing tool enclose a tilt angle. The absolute value of the tilt angle is preferably more than 8°, preferably more than 15°, and less than 82°, preferably less than 75°. The feed direction of the cutting tool can be set at an angle to the feed direction of the sawing device, at least substantially perpendicular or at an angle to the longitudinal direction.Preferably, a cutting edge, a tooth flank, and / or a tooth base of the at least one sawtooth is formed while the feed directions are aligned obliquely to one another. In an embodiment with advantageously few individual steps, the method preferably comprises exclusively machining steps in which the feed directions are set obliquely to one another. Alternatively, in at least one method step, the blank is machined while the feed directions are aligned at least substantially perpendicular to one another.

[0011] "Intended" should be understood in particular to mean specifically programmed, designed, and / or equipped. The fact that an object is intended for a specific function should be understood in particular to mean that the object fulfills and / or performs this specific function in at least one application and / or operating state.

[0012] With a tilt angle of 0° between the feed directions, cutting edges and tooth bases can be formed that run at least substantially parallel to the cutting width direction or at least substantially parallel to a plane perpendicular to the feed direction of the sawing device. The inventive design advantageously enables new geometries of the sawing device that have surfaces tilted about the longitudinal axis relative to a plane perpendicular to the feed direction of the sawing device. In particular, cutting edges and / or tooth bases that run partially or completely obliquely to the feed direction of the sawing device can advantageously be formed in a simple manner.

[0013] It is further proposed that an absolute value of an angle between the feed directions be set to at least 45°. This angle is in particular the complementary angle to the already mentioned tilt angle. Preferably, the absolute value of the tilt angle is set to a maximum of 45°. Alternatively, the absolute value of the tilt angle is at least less than 55°, in particular at least less than 65°. The configuration according to the invention makes it possible to achieve advantageously effective chip removal on the at least one sawtooth, which is in particular all the more effective the larger the absolute value of the tilt angle is maintained. Furthermore, an advantageously low risk of the sawtooth breaking off can be achieved, in particular the lower the risk the smaller the absolute value of the tilt angle is maintained.

[0014] It is further proposed that in at least two method steps of the method for forming the at least one sawtooth and / or for forming different sawtooths, the feed directions are aligned at different angles to one another. For example, the cutting edge, a tooth root, and / or a tooth flank of the at least one sawtooth are each formed with at least one different tilt angle. For example, different tooth flanks and / or different tooth roots of the at least one sawtooth are formed with different tilt angles. For example, at least two, in particular at least two in each case, different tilt angles are used to form the cutting edge, to form a tooth root and / or to form a tooth flank. The different tilt angles can differ in terms of their absolute value and / or their orientation.The design according to the invention advantageously allows complex and / or symmetrical sawtooth geometries to be created.

[0015] It is further proposed that in at least one method step, namely a turning step, of the method for forming the at least one sawtooth and / or for forming different sawtooth, the blank is turned about the feed direction of the sawing device. Material is preferably removed from the blank in at least one machining process at at least a first tilt angle, in particular for forming a tooth base, a tooth flank and / or the cutting edge of the at least one sawtooth. Preferably, in the turning step, an orientation of the blank relative to the machining device is rotated by 180° about the feed direction into a turned orientation after the machining process with the at least one first tilt angle.The turned orientation can, starting from a relative position of the blank to the feed direction of the cutting device, have an additional translation, in particular along the longitudinal direction, or have the same relative position to the feed direction of the cutting device as before turning. In the turned orientation, material is preferably removed from the blank at at least one further tilt angle, in particular for forming a tooth base, a tooth flank and / or the cutting edge of the at least one sawtooth. The at least one further tilt angle is preferably equal in magnitude to the at least first tilt angle. The design according to the invention advantageously allows symmetrical sawtooth geometries to be created.

[0016] It is further proposed that adjacent saw teeth be formed at least substantially mirror-symmetrically with respect to a plane perpendicular to a row of saw teeth, hereinafter referred to as the mirror plane. The mirror plane is preferably perpendicular to the longitudinal direction. The mirror plane preferably intersects the sawing device at a tooth base between two adjacent saw teeth. The saw teeth can each be formed asymmetrically or rotationally symmetrically with respect to a rotational axis parallel to the feed direction of the sawing device and / or mirror-symmetrically with respect to a further mirror plane perpendicular to the cutting width direction. Due to the design according to the invention, forces occurring on the adjacent saw teeth during use of the sawing device can advantageously be mutually balanced and wear can be kept to a minimum.

[0017] It is further proposed that a change in an angle between the feed directions be carried out, in particular exclusively, before and / or after a machining process. Particularly preferably, the tilt angle is set or changed, in particular only when the machining device is in a position spaced from the blank. Preferably, an alignment of the feed directions is maintained during the machining process. Preferably, an alignment of the feed directions of the machining device with the longitudinal direction and / or the cutting width direction is maintained during the machining process. The inventive design advantageously allows planning and execution of the method to be kept simple.It is further proposed that an angle, hereinafter referred to as the yaw angle for differentiation, between the feed direction of the cutting device and a tooth row of the sawing device is kept constant, at least in terms of amount. The yaw angle is preferably an angle in a plane perpendicular to the feed direction of the sawing device between the longitudinal direction and a parallel projection of the feed direction of the cutting device along the feed direction of the sawing device into this plane. In an advantageously simple embodiment, the yaw angle is 0°. The fact that the "yaw angle is kept constant" should be understood in particular to mean that the yaw angle is the same for each cutting process, wherein the yaw angle can be changed between the cutting processes in order to realign and / or reposition the blank and the cutting device relative to one another.If the method includes a turning step in which the blank is turned, the absolute value of the yaw angle is preferably the same before and after the turning step. The inventive design advantageously places fewer requirements on the degrees of freedom of movement of a holder of the cutting tool and / or a holder of the blank. The method can be carried out in advantageously few individual steps and / or with advantageously simple equipment.

[0018] It is further proposed that the at least one sawtooth is formed using a maximum of two machining processes by means of the machining device. Preferably, in a first machining process, a tooth base and a tooth flank of the at least one sawtooth are formed at the first tilt angle. Preferably, after the first machining process, the blank is turned about the feed direction of the sawing device. Preferably, in a second machining process, with a further tilt angle, which is preferably equal in magnitude to the first tilt angle, a further tooth base, a further tooth flank, and the cutting edge of the at least one sawtooth are formed. In an embodiment with advantageously few method steps, several machining devices, whose feed directions are arranged at least substantially parallel to one another, are used to form several sawtooth simultaneously.The cutting tools preferably have a minimum distance from one another that corresponds to an integer multiple of a tooth pitch to be formed, preferably an integer multiple of twice the tooth pitch to be formed, in particular twice the tooth pitch to be formed, between two adjacent saw teeth of the sawing device. In particular, the turning step comprises a relative translation between the blank and / or the cutting tool(s), which corresponds to a single tooth pitch to be formed between two adjacent saw teeth of the sawing device. Particularly preferably, all saw teeth of the sawing device are formed simultaneously with the two cutting processes. Due to the design according to the invention, the sawing device can advantageously be manufactured quickly.In particular, process steps for realigning the blank relative to the at least one cutting device can advantageously be kept to a minimum.

[0019] Furthermore, a sawing device for an oscillating multi-function tool manufactured according to a method according to the invention is proposed. The sawing device preferably has at least one inclined surface and / or inclined edge on the cutting edge, a tooth flank, and / or a tooth base of the at least one sawtooth, which, in a plane perpendicular to the longitudinal direction, has an angle relative to the feed direction of the sawing device that differs from 0° or an integer multiple of 90°. In particular, the inclined surface and / or the inclined edge has an angle to a plane perpendicular to the feed direction of the sawing device that is less than 80°, preferably less than 65°, particularly preferably less than 50°.In particular, the inclined surface and / or the inclined edge has an angle to a plane perpendicular to the feed direction of the sawing device, which angle is greater than 8°, preferably greater than 12°, particularly preferably greater than 12°. The sawing device can be specifically designed for processing wood or metal or can be configured as a multi-material sawing device. The inventive design makes it possible to provide a sawing device for an oscillating multi-function tool that has advantageously effective chip removal and / or is advantageously low-wear.

[0020] Furthermore, a saw blade for an oscillating multifunctional tool is proposed, comprising a saw blade base body and a sawing device according to the invention arranged, in particular welded, on the saw blade base body. The saw blade base body is preferably arranged on the base body of the sawing device such that the longitudinal direction and the cutting width direction are arranged at least substantially perpendicular to a main extension plane of the saw blade base body. A "main extension plane" of a structural unit is to be understood, in particular, as a plane that is parallel to a largest side surface of a smallest imaginary cuboid that just completely encloses the structural unit, and in particular runs through the center of the cuboid.The saw blade base body preferably has a material thickness in a direction parallel to the cutting width direction, which is preferably less than or at most equal to the maximum transverse extent of the sawing device. The saw blade preferably comprises a tool interface at an end of the saw blade base body facing away from the sawing device. The tool interface is preferably provided for a reversible, rotationally fixed connection of the saw blade to a drive of the oscillating multi-function tool. A "reversible connection" should preferably be understood to mean a connection that can be established non-destructively and, in particular, without tools and can also be released again. The tool interface preferably defines a pivot axis about which the sawing device can be pivoted by the drive. The feed direction of the sawing device preferably runs at least substantially perpendicular to the pivot axis.The saw blade base body preferably has a maximum radial extent in the feed direction of the sawing device which is greater, in particular by more than a factor of 3, particularly preferably by more than a factor of 5, than the maximum vertical extent of the sawing device. The saw blade base body and the sawing device are preferably formed in one piece. “Integral” should be understood in particular to mean at least materially connected, for example by a welding process, an adhesive process, an injection molding process and / or another process that appears appropriate to a person skilled in the art, and / or advantageously formed in one piece, for example by production from a single casting and / or by production using a single-component or multi-component injection molding process and advantageously from a single blank.The design according to the invention makes it possible to provide a saw blade for an oscillating multi-function tool which has advantageously effective chip removal and / or is advantageously designed to be low-wear.

[0021] The method according to the invention, the sawing device according to the invention, and / or the saw blade according to the invention are not intended to be limited to the application and embodiment described above. In particular, the method according to the invention, the sawing device according to the invention, and / or the saw blade according to the invention may, in order to fulfill a function described herein, comprise a number of individual elements, components, units, and method steps that differs from the number stated herein. Furthermore, in the value ranges specified in this disclosure, values ​​within the stated limits are also to be considered disclosed and can be used arbitrarily.

[0022] Drawings

[0023] Further advantages will become apparent from the following description of the drawings. The drawings illustrate three exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0024] They show:

[0025] Fig. 1 is a schematic representation of an oscillating multi-function tool with a saw blade according to the invention,

[0026] Fig. 2 is a schematic representation of a tilt angle during a method according to the invention for producing a sawing device according to the invention of the saw blade according to the invention,

[0027] Fig. 3 is a schematic representation of the sawing device according to the invention, Fig. 4 is a schematic representation of an alternative embodiment of a sawing device according to the invention and

[0028] Fig. 5 is a schematic representation of a further alternative embodiment of a sawing device according to the invention.

[0029] Description of the embodiments

[0030] Figure 1 shows an oscillating multi-function tool 14. The multi-function tool 14 preferably comprises a drive for generating a pivoting movement about a pivot axis 54. The pivot axis 54 preferably runs at least substantially perpendicular to a maximum longitudinal extent of the oscillating multi-function tool 14. The drive preferably comprises an electric motor for providing a force and / or a torque. The oscillating multi-function tool 14 is preferably hand-held and can be operated with one or both hands. The oscillating multi-function tool 14 has a mass of less than 5 kg, preferably less than 3 kg. A power supply for the oscillating multi-function tool 14 for supplying the electric motor of the drive can comprise an electrical energy storage device, in particular at least one rechargeable battery, and / or a power supply unit.The drive and the power supply are preferably arranged in a common housing of the oscillating multi-function tool 14. The multi-function tool 14 preferably comprises a device interface 30 for a reversible, rotationally fixed connection of various tool accessories to the drive. Here, the oscillating multi-function tool 14 is illustrated by way of example with a saw blade 24 as a tool accessory.

[0031] The saw blade 24 for the oscillating multi-function tool 14 comprises a saw blade base body 26. A main extension plane of the saw blade base body 26 is aligned at least substantially perpendicular to the pivot axis 54 when arranged on the oscillating multi-function tool 14. The saw blade 24 preferably comprises at least one tool interface 28, which is provided for a reversible connection to the oscillating multi-function tool 14, in particular the device interface 30. The saw blade 24 comprises at least one sawing device 12 arranged, in particular welded, on the saw blade base body 26. Different embodiments of the sawing device 12 are shown in Figures 3 to 5. The sawing device 12 and the tool interface 28 are preferably arranged at opposite ends of the saw blade base body 26.The sawing device 12 preferably has, in a state in which the saw blade 24 is arranged on the oscillating multi-function tool 14, a maximum longitudinal extent which runs at least substantially perpendicular to the pivot axis 54 and in particular at least substantially perpendicular to the maximum longitudinal extent of the oscillating multi-function tool 14.

[0032] Figure 2 shows the saw blade 24 from a longitudinal direction of the sawing device 12, which runs parallel to the maximum longitudinal extent of the sawing device 12. The sawing device 12 has a feed direction 18. The feed direction 18 of the sawing device 12 preferably runs at least substantially perpendicular to the maximum longitudinal extent of the sawing device 12. The feed direction 18 of the sawing device 12 preferably runs radially to the pivot axis 54. The sawing device 12 preferably comprises a plurality of saw teeth 16 and a base body 36, which are arranged one behind the other in the feed direction 18 of the sawing device 12. The sawing device 12 is arranged with the base body 36 on the saw blade base body 26, in particular welded thereto or formed integrally therewith. The saw teeth 16 are arranged one behind the other in a, here single, row of teeth in the longitudinal direction.The saw teeth 16 preferably protrude away from the base body 36 and the saw blade base body 26 in the feed direction 18 of the sawing device 12.

[0033] Figure 2 further shows a feed direction 20 of a cutting device in the course of a method for producing the sawing device 12. The saw teeth 16 are formed from a blank of the sawing device 12 by means of the cutting device in at least one cutting process of the method. In at least one method step of the method for forming the at least one saw tooth 16, the feed direction 18 of the sawing device 12 and the feed direction 20 of the cutting device are aligned obliquely to one another. An inclination of the feed directions 18, 20 is measured here as a tilt angle 34 between the feed direction 20 of the cutting device and a plane 32 perpendicular to the feed direction 18 of the sawing device 12. In a preferred embodiment, an absolute value of the tilt angle 34 is preferably set to a maximum of 45°. Embodiments of the method with larger tilt angles are also conceivable.

[0034] Figures 3 to 5 show various embodiments of the sawing device 12a, 12b, 12c according to the invention. The following descriptions and the drawings are essentially limited to the differences between the embodiments, whereby with regard to components with the same designation, in particular with regard to components with the same reference numerals, reference can in principle also be made to the drawings and / or the description of the other embodiments and to Figures 1 and 2. To distinguish the embodiments, the reference numerals of the embodiments in Figures 3 to 5 are followed by the letters a to c. Figures 1 and 2 can be combined with all embodiments of Figures 3 to 5, so that the reference numerals in Figures 1 and 2 do not have any special letters after them.

[0035] Figure 3 shows an exemplary embodiment of a sawing device 12a that can be produced using the method. The sawing device 12a comprises a maximum longitudinal extent in a longitudinal direction 38a, a maximum transverse extent in a cutting width direction 40a, and a maximum vertical extent in a feed direction 18a. The longitudinal direction 38a, the cutting width direction 40a, and the feed direction 18a are preferably at least substantially perpendicular to one another in pairs. In the longitudinal direction 38a, the sawing device 12a has a plurality of saw teeth 16a, 22a. The saw teeth 16a, 22a preferably each have a tooth base 46a, a tooth flank 44a, a cutting edge 42a, a further tooth flank, and a further tooth base 48a in the longitudinal direction 38a. The cutting edge 42a preferably lies completely in a plane that is at least substantially perpendicular to the feed direction 18a, in which plane it runs in particular obliquely to the cutting width direction 40a.The tooth bases 46a, 48a extend in a plane at least substantially perpendicular to the longitudinal direction 38a, obliquely to the feed direction 18a of the sawing device 12a. In the plane at least substantially perpendicular to the longitudinal direction 38a, the tooth bases 46a, 48a have tooth base angles to the feed direction 18a of the sawing device 12a that are equal in magnitude but oppositely oriented to the feed direction 18a. The absolute value of the tooth base angles is preferably less than 75°, more preferably less than 65°, in particular less than 55°. The saw teeth 16a, 22a are preferably mirror-symmetrical in pairs to a plane of symmetry perpendicular to the longitudinal direction 38a, which plane runs through one of the tooth bases 46a, 48a. Each saw tooth 16a, 22a is, by way of example, rotationally symmetrical with respect to a rotation of 180° about an axis of symmetry parallel to the feed direction 18a, which axis runs through a center point of the cutting edge 42a.

[0036] A method for producing the sawing device 12a preferably comprises at least two, in particular exactly two, machining processes in order to form at least one of the saw teeth 16a, 22a from a blank of the sawing device 12a. Particularly preferably, all saw teeth 16a, 22a are formed simultaneously in the two machining processes. Preferably, in a first machining process of the method, the tooth base 46a and the tooth flank 44a are formed. In the first machining process, a feed direction 20a of a machining device is set obliquely to the feed direction 18a of the sawing device 12a. The feed direction 20a of the machining device is preferably set in a direction at least substantially parallel to a plane spanned by the feed direction 18a of the sawing device 12a and the cutting width direction 40a.In the first machining process, the cutting device is preferably moved along its feed direction 20a without changing direction over the entire maximum transverse extent of the sawing device 12a.

[0037] A change in an angle between the feed directions 18a, 20a is carried out before and / or after a machining process. The method preferably comprises a turning step after the first machining process, in which the blank is turned about the feed direction 18a of the sawing device 12a. In the turning step, the blank is preferably rotated by 180° about the feed direction 18a of the sawing device 12a. The feed direction 20a of the machining device relative to the sawing device 12a transitions in particular into a feed direction 20a' in the turning step, wherein an orientation of a tilt angle of the feed direction 20a, 20a' of the machining device is changed while its absolute value is retained. An angle between the feed direction 20a, 20a' of the machining device and a tooth row of the sawing device 12a is at least the same in magnitude before and after the turning step.Preferably, the blank and the cutting device are displaced relative to each other before, during or after the turning step in the longitudinal direction 38a by an integer multiple of a tooth pitch, in particular exactly one tooth pitch, between the saw teeth 16a, 22a.

[0038] The method preferably comprises one, in particular exactly one, further machining process, which is preferably carried out after the turning step. In the further machining process, the further tooth flank, the further tooth base 48a and the cutting edge 42a are preferably formed. In the further machining process, the feed direction 20a' of a machining device is set obliquely to the feed direction 18a of the sawing device 12a. The feed direction 20a' of the machining device is preferably set in a direction at least substantially parallel to a plane spanned by the feed direction 18a of the sawing device 12a and the cutting width direction 40a. In the further machining process, the machining device is preferably moved along its feed direction 20a' without changing direction over the entire maximum transverse extent of the sawing device 12a.Due to the machining processes, adjacent saw teeth 16a, 22a are formed at least substantially mirror-symmetrically with respect to a plane perpendicular to a tooth row of the saw teeth 16a, 22a, ie to the longitudinal direction 38a.

[0039] Figure 4 shows a further sawing device 12b that can be produced using the method described in Figure 2. The sawing device 12b comprises adjacent saw teeth 16b, 22b with cutting edges 42b, 50b, which are connected via a connecting piece 52b. In particular, the sawing device 12b has a continuous cutting edge 42b, 50b that extends over all saw teeth 42b, 50b. The connecting piece 52b is, in particular, an arcuate edge of a common tooth base 46b of the adjacent saw teeth 16b, 22b. The method differs from an embodiment as described in the description of Figure 3 only by adjusting the tilt angle as a function of a maximum transverse extent and a maximum vertical extent of the blank, in particular taking into account a possibly trapezoidal or rectangular cross-section of the blank perpendicular to a longitudinal direction 38b of the blank.

[0040] Figure 5 shows a further sawing device 12c, which can be produced using the method described in Figure 2, with a plurality of saw teeth 16c, 22c. The saw teeth 16c, 22c have, in particular, a cutting edge 42c, tooth flanks 44c, and / or tooth bases 46c, which extend / extend in sections obliquely to a feed direction 18c of the sawing device 12c. In particular, the cutting edge 42c, tooth flanks 44c, and / or tooth bases 46c have two sections which extend at different oblique angles to the feed direction 18c of the sawing device 12c. The sections of the same component of the saw teeth 16c, 22c preferably each have the same angle to the feed direction 18c of the sawing device 12c. The saw teeth 16c, 22c comprise in particular a mirror symmetry with respect to a plane spanned by a longitudinal direction 38c and a feed direction 18c of the sawing device 12c, wherein the sections are arranged on different sides of this plane.Preferably, at least the angles of the tooth flanks 44c and tooth bases 46c relative to the feed direction 18c of the sawing device 12c are equal. The angle of the cutting edge 42c can be equal to or different from the angle of the tooth flanks 44c and tooth bases 46c relative to the feed direction 18c. A base body 36c of the sawing device 12c, on which the saw teeth 16c, 22c are arranged, preferably has a curvature in the feed direction 18c of the sawing device 12c, so that the centers of the cutting edges 42c are arranged in an arcuate manner.

[0041] A method for producing the sawing device 10c comprises at least one additional machining process compared to the method from the description of Figures 3 and 4. Preferably, in a first machining process of the method, a section of the tooth base 46c and the tooth flank 44c is formed at a tilt angle between 10° and 30°. Preferably, the machining device and the blank are moved parallel to the longitudinal direction relative to one another by one tooth pitch, and the first machining process is repeated to form a section of the further tooth base 48c and a section of the further tooth flank. Preferably, the machining device and the blank are moved parallel to the longitudinal direction by half a tooth pitch and parallel to the feed direction 18c of the sawing device, and the additional machining process is carried out to form a section of the cutting edge 42c.In the additional machining process, a new tilt angle can be set, or the tilt angle of the first machining process can be maintained. Preferably, the method comprises a turning step after the additional machining process, in particular as described for Figure 3, wherein a translation of the machining device and the blank relative to each other amounts to half a tooth pitch. After the turning step, the machining processes described above are preferably repeated.

Claims

Claims 1. A method for producing a sawing device (12; 12a; 12b; 12c) for an oscillating multi-function tool (14), wherein at least one sawtooth (16; 16a; 16b; 16c) is formed from a blank of the sawing device (12; 12a; 12b; 12c) by means of a cutting device, characterized in that in at least one method step for forming the at least one sawtooth (16; 16a; 16b; 16c), a feed direction (18; 18a; 18b; 18c) of the sawing device (12; 12a; 12b; 12c) and a feed direction (20; 20a; 20b; 20c) of the cutting device are aligned obliquely to one another.

2. Method according to claim 1, characterized in that an absolute value of an angle between the feed directions (18, 20; 18a, 20a; 18b, 20b; 18c, 20c) is set to at least 45°.

3. Method according to claim 1 or 2, characterized in that in at least two method steps for forming the at least one sawtooth (16a; 16b; 16c) and / or for forming different sawtooths, the feed directions (18, 20; 18a, 20a; 18b, 20b; 18c, 20c) are aligned at different angles to one another.

4. Method according to one of the preceding claims, characterized in that in at least one method step for forming the at least one sawtooth (16a; 16b; 16c) and / or for forming different sawtooths, the blank is turned about the feed direction (18; 18a; 18b; 18c) of the sawing device (12; 12a; 12b; 12c).

5. Method according to one of the preceding claims, characterized in that adjacent saw teeth (16a, 22a; 16b, 22b; 16c, 22c) are arranged with respect to a tooth row of the saw teeth (16a, 22a; 16b, 22b; 16c, 22c) vertical plane are formed at least essentially mirror-symmetrically.

6. Method according to one of the preceding claims, characterized in that a change in an angle between the feed directions (18, 20; 18a, 20a; 18b, 20b; 18c, 20c) is carried out before and / or after a machining process.

7. Method according to one of the preceding claims, characterized in that an angle between the feed direction (20; 20a; 20b; 20c) of the cutting device and a tooth row of the sawing device (12; 12a; 12b; 12c) is kept constant at least in terms of amount.

8. Method according to one of the preceding claims, characterized in that the at least one sawtooth (16a; 16b; 16c) is formed with a maximum of two machining processes by means of the machining device.

9. Sawing device (12; 12a; 12b; 12c) for an oscillating multi-function tool (14) manufactured by a method according to one of claims 1 to 8.

10. Saw blade (24) for an oscillating multi-function tool with a saw blade base body (26) and with a sawing device (12; 12a; 12b; 12c) according to claim 9 arranged, in particular welded, on the saw blade base body (26).

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