EP2822742A1

EP2822742A1 - Insertion tool

Info

Publication number: EP2822742A1
Application number: EP13700232.5A
Authority: EP
Inventors: Bruno Luescher
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2012-03-08
Filing date: 2013-01-15
Publication date: 2015-01-14
Also published as: CN104159715B; DE102012004457A1; US10179381B2; CN104159715A; WO2013131666A1; US20150107096A1

Abstract

The invention relates to a hand machine tool insertion tool (12) for an oscillating and/or rotating movement when coupled to a tool receptacle (10, 110, 210), having a processing region (76) and having a fastening region (80) for coupling to the tool receptacle (10, 110, 210) and in which at least two fastening elements (74) are arranged around a circle (82) around a drive axis (84). According to the invention, the fastening region (80) is at least substantially free of recesses in a radial direction (30) within the circle (82).

Description

Description insert tool

State of the art

There are already known tools according to the preamble of claim 1.

Disclosure of the invention

The invention is based on an insertion tool, in particular a hand tool insert tool, which is provided in at least one coupled to at least one tool holder state at least substantially to an oscillating and / or rotational movement, with at least one processing area and at least one mounting area, at least substantially to a coupling with the at least one tool holder is provided and in which at least two fastening elements are arranged at least substantially on a circle around a drive axis around.

It is proposed that the fastening region is formed in the radial direction within the circle at least substantially without recesses. In this context, a "tool holder" is to be understood as meaning, in particular, a subregion of a handheld power tool which is at least essentially intended to receive and hold the insertion tool, in particular detachably, preferably without tools and / or equipped to be understood. By "at least substantially" is meant in particular that a deviation from a predetermined value in particular especially less than 25%, preferably less than 10% and particularly preferably less than 5% of the predetermined value deviates.

In this context, a "processing region" is to be understood as meaning, in particular, a region of the insertion tool which is at least substantially provided for machining at least one workpiece In this context, a "fastening area" is to be understood as meaning, in particular, a region of the insertion tool which is at least substantially intended to correspond with the tool receptacle and to couple the insertion tool to the tool receptacle.

In this context, the term "recess-free" should be understood to mean, in particular, that a material of the insertion tool is formed continuously and without interruptions. "At least substantially free of recesses" is to be understood in this context as meaning that the fastening area lies radially within the circle in particular to at least 60%, preferably to at least 75%, preferably to at least 95% and particularly preferably completely formed by a continuous and uninterrupted material extension.

A "radial direction" should in particular be understood to mean a direction which runs at least substantially along a radius of the circle and intersects a center of the circle.

The embodiment according to the invention makes it possible to achieve a preferably simple, user-friendly and, in particular, tool-free coupling of the insert tool with a corresponding tool receptacle. In addition, the insert tool can be formed such that the insert tool, in particular compared to already known insert tools having a Zentrierbefestigungsausnehmung, having an increased moment of inertia. As a result, an advantageously wide range of application of the insert tool can be achieved in a structurally simple manner. In addition, it is proposed that the fastening region comprises at least one coding element. In this context, a "coding element" is to be understood as meaning, in particular, an element which is provided at least essentially, preferably at least substantially exclusively, for coupling the insertion tool with an unsuitable tool receptacle or tool receptacle not intended for use with the insertion tool safe to prevent. As a result, a preferably high level of operator safety can be achieved and a high degree of wear, high wear and a shortening of the service life of an unsuitable hand tool machine can advantageously be reliably prevented.

In a particularly preferred embodiment, the coding element is formed at least partially, preferably at least substantially completely in one piece with at least one base body, in particular with the fastening area, of the insertion tool. By "in one piece" should be understood in particular to be at least materially bonded, for example by a welding process, an adhesive process, an injection process and / or another process that appears expedient to a person skilled in the art, and / or advantageously shaped in one piece, for example by a production from a cast and / or by a production in a one-component or multi-component injection molding process and advantageously from a single blank The coding element can preferably be provided for a form-fitting coding a holding force between see two components is preferably transmitted by a geometric engagement of the components into each other between the components.

Furthermore, it is proposed that the fastening region is formed in the radial direction within the circle at least substantially free of fasteners. In this context, "fastener-free" is to be understood in particular as meaning that the circle is formed in the radial direction within at least substantially free of elements and / or contours that are at least partially provided for coupling with the tool receptacle inexpensive design, in particular the attachment area, the insert tool can be achieved. It is also proposed that the fastening elements are provided for attachment in an axial direction, in a radial direction and / or in a circumferential direction. As a result, structurally simple design of the fastening region of the insert tool can be achieved.

Furthermore, it is proposed that the fastening elements are at least partially formed as an edge of at least one fastening recess. In this context, a "fastening recess" is to be understood as meaning, in particular, a material weakening, and particularly preferably a breakthrough through the material of a base body of the insertion tool, in particular of the fastening region, which is provided at least substantially to a coupling of the insertion tool to a corresponding tool holder , This allows a structurally simple, robust and cost-effective design of the fasteners can be achieved.

In addition, it is proposed that the coding element is arranged at least substantially in the radial direction within the circle. As a result, a preferably compact design of the fastening region of the insert tool can be achieved.

It is further proposed that the coding element is at least substantially formed by an at least substantially plate-shaped material extension. A "plate-shaped material extension" is to be understood in this context in particular a spatial element that, viewed in a development in a plane in a cross-section perpendicular to the plane has a non-circular cross-sectional area and perpendicular to the plane a particular at least substantially constant material thickness which is less than 50%, preferably less than 25% and most preferably less than 10% of a surface extension of the spatial element parallel to the plane, in particular a smallest surface extension of the element parallel to the plane. This allows a structurally simple and cost-effective design of the coding element can be achieved.

Furthermore, it is proposed that the insert tool has at least one material extension which is at least substantially in the radial direction is arranged outside the circle. In this context, a "material extension" is to be understood in particular to mean a region which is at least substantially completely formed by a material, in particular a base body of the insertion tool.

In addition, it is proposed that the fastening recesses are at least substantially closed. By "at least substantially closed" should in this context be understood in particular that the mounting recesses on the plane over an angular range of at least 180 °, preferably at least 270 °, more preferably at least substantially 360 °, is enclosed by a material extension. As a result, a preferably stable embodiment of the fastening recesses and an advantageously secure coupling with the tool holder can be achieved.

drawing

Further advantages emerge from the following description of the drawing. In the drawing, three 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:

FIG. 1 shows a hand-held power tool with a tool according to the invention and an insert tool coupled thereto in a schematic side view, FIG.

2 is a sectional view of the tool holder according to the invention, FIG. 3 is a perspective view of the tool holder according to the invention with an insert tool coupled thereto; 4a shows the tool holder according to the invention with an insert tool coupled thereto in a sectional view,

4b is a detail of the inventive tool holder in a schematic sectional view,

Fig. 5, the tool holder according to the invention without a coupled thereto

Insert tool in a perspective view,

6 shows the insert tool in a perspective view,

Fig. 7 shows a detail of the insert tool in a plan view and

Fig. 8 shows a detail of an alternative tool holder in a schematic sectional view.

Description of the embodiments

FIG. 1 shows a handheld power tool 38. The hand tool 38 is formed by an oscillating hand tool. The hand tool 38 is formed by an electric hand tool and has a power cable 40. The hand tool 38 includes a drive unit 42 which is enclosed by a housing 44 and which can be supplied via the power cable 40 with an electrical voltage. Furthermore, the hand tool 38 has a gear unit 46. The gear unit 46 is arranged between the drive unit 42 and a tool holder 10. The housing 44 of the hand tool 38 includes a handle portion 48 in which an operator may include the housing 44 and guide the hand tool 38 in an operative condition.

FIG. 2 shows the tool holder 10 of the handheld power tool 38, which is provided for an oscillating or rotary drive of an insert tool 12. The tool holder 10 is formed by a machine tool tool holder. The hand tool 38 has a drive shaft 36, which is intended to transmit a drive movement of the drive unit 42, not shown in detail on the insert tool 12 which is coupled to the tool holder 10 in an operating condition. The drive shaft 36 is formed in a hollow, the hollow cylindrical of the insert tool 12 facing end. In this area, the scope of Drive shaft 36, a clamping element 24 of the tool holder 10 in the circumferential direction 34. The clamping element 24 has a support member 50 which extends over a circumference of the clamping element 24 in the radial direction 30 to the outside. On the support element 50 of the clamping element 24 is supported in the axial direction 18, a spring element 52 from. The spring element 52 is formed by a helical spring. The spring element 52 is formed by a compression spring. The spring element 52 is supported on a, the insert tool 12 facing the end of a support member 54 of the drive shaft 36 which is disposed radially within the drive shaft 36 from. The support element 54 is held in a groove 56 in the drive shaft 36 in the axial direction 18 and is annular. The spring element

52 loaded the clamping element 24 via the support member 50 in the axial direction 18 of the insert tool 12 away.

The clamping element 24 has a conical region 26. The conical region 26 is arranged in the axial direction 18 in a region of the clamping element 24 facing away from the drive unit 42. The conical region 26 is arranged in the axial direction 18, viewed from the drive unit 42 to the insert tool 12, after the support element 54 of the drive shaft 36. The cone-shaped region 26 extends in the radial direction 30 to the outside. A small diameter of the conical region 26 is arranged facing the drive unit 42 in the axial direction 18.

The tool holder 10 has a receiving element 14 arranged on the receiving side, which is intended to be coupled to the insertion tool 12. The tool holder 10 has four receiving side arranged

Fastening elements 14, which are provided for coupling with the insertion tool 12. Furthermore, the tool holder 10 has further fastening elements 58, which are provided for transmitting a drive movement to the insertion tool 12. The fasteners 14 are disposed on a circle 60 about a drive axis 32 of the drive shaft 36 around. The fastening elements 14 are viewed in the radial direction 30, disposed within the drive shaft 36 and outside of the clamping element 24. The fastening elements 14 have a region 62 facing the support element 50, whose surface is inclined relative to the drive axis 32 and thus forms a negative cone shape. The area 62 extends in Radial direction 30 inwards. The area 62 corresponds to the

cone-shaped portion 26 of the clamping element 24. The tool holder 10 has a translation unit 22, which comprises the cone-shaped portion 26 of the clamping element 24 and the region 62 of the fastening elements 14. The translation unit 22 is provided for translating a movement in the axial direction 18 into a movement in a direction deviating from the axial direction 18 of the fastening elements 14.

The fastening elements 14 have a region 64 facing away from the support element 50, which is designed in the form of a pin. The pin-shaped region 64 extends beyond the drive shaft 36 in the axial direction 18 and projects beyond the drive shaft 36. In the pin-shaped region 64, the fastening elements 14 each have a translation surface 28. The translation surfaces 28 are formed by bevels, which are tilted to the axial direction 18. The translation surfaces 28 partially form a translation unit 20 of the tool holder 10. The translation unit 20 is intended to translate a partially deviating from an axial movement 18 relative movement between the insert tool 12 and the fastener 14 in a fastening force in the axial direction 18. The fastening force is designed as a clamping force F in the axial direction 18. The translation surfaces 28 of the fasteners 14 translate the pivotal movement of the fasteners 14, which has a component of motion in the radial direction 30, into a force having at least one component of force in the axial direction that constitutes the tension F. The fastening elements 14 also have a central region, which is arranged in the axial direction 18 between the region 62 and the pin-shaped region 64.

The tool holder 10 has a bearing unit 16, which is provided for movably supporting the fastening element 14 in a direction that deviates partially from an axial direction 18. The deviating from the axial direction 18 movement of the fastening elements 14 is intended to generate the clamping force F in the axial direction 18. The fastening elements 14 are thus mounted movably relative to the drive shaft 36 and the clamping element 24. The fastening elements 14 are movably supported in the central area. The bearing unit 16 has pin elements 66 which are provided for this purpose to mount the fasteners 14 in the central region movable. The bearing unit 16 is provided to mount the fastening elements 14 partially movable in the radial direction 30 relative to the drive axle 32. The bearing unit 16 is intended to pivotally mount the fastening elements 14. It is also conceivable that the bearing unit 16 is provided to the

Mounting members 14 partially or completely in the circumferential direction 34 relative to the drive axle 32 movably to store.

At a, the drive unit 42 facing away from the other fastening elements 58 of the tool holder 10 are arranged. The tool holder 10 has eight further fastening elements 58. The further fastening elements 58 are arranged on a circle 60 about the drive axis 32 of the drive shaft 36 around. The circles 60, on which the fastening elements 14 and the further fastening elements 58 are arranged, have the same radius. The further fastening elements 58 are cone-shaped. The further fastening elements 58 are connected to each other in pairs via ring segment elements 68 (FIG. 5). The further fastening elements 58 are firmly connected to the ring segment elements 68. The further fastening elements 58 are integrally connected to the ring segment elements 68. The ring segment elements 68 are each firmly connected to the drive shaft 36. The ring segment elements 68 are integrally connected to the drive shaft 36. The fastening elements 14 are arranged uniformly between the further fastening elements 58. The fastening elements 14 are each arranged between the ring segment elements 68. Overall, the tool holder 10 has twelve fastening elements 14, 58.

The hand tool 38, which includes the tool holder 10, has an unspecified actuator 70 on. Actuator 70 may be used as a lever, knob or other known to a person skilled in the art

Element be formed. By an actuation of the actuating element 70 by an operator, the clamping element 24 is moved against the force of the spring element 52 in the axial direction 18 away from the drive unit 42. As a result, the conical region 26 of the clamping element 24 and the regions 62 of the fastening elements are guided past one another, whereby the fastening elements are moved positively. The fastening elements 14 thereby move into a position in which the pin-shaped regions 64 are arranged parallel to the drive axis 32. In this position, the insert tool 12 can be pushed by an operator on the fastening elements 14 and on the other fastening elements 58 of the tool holder 10 in the axial direction 18 (Figure 2). The fastening elements 14 and the further fastening elements 58 pass through corresponding fastening elements 74 of the insert tool 12 formed by fastening recesses 72.

By releasing or releasing the actuating element 70 by the operator, the clamping element 24 is automatically moved by the force of the spring element 52 in the axial direction 18 toward the drive unit 42. As a result, the conical region 26 of the clamping element 24 and the regions 62 of the fastening elements 14 are guided past one another and press the regions 62 of the fastening elements 14 outward in the radial direction 30 (FIG. 4 a). The pin-shaped regions 64 of the fastening elements 14 thereby move inward in the radial direction 30 (FIGS. 3, 4a, 4b and 7). In an assembled state of the insert tool 12 on the tool holder 10, the insert tool 12 is clamped by the pivoting movement of the fasteners 14 in the axial direction 18 on the tool holder 18 and held captive. The pivotal movement of the fastening elements 14 causes a clamping force F in the axial direction 18 on the insert tool 12. As a result, the insert tool 12 is pressed toward the tool holder 10 and moves in the axial direction 10 along the other, cone-shaped fastening elements 58 along. In a fully clamped state of the insert tool 12 in the tool holder 10, the further fastening elements 58 rest in the radial direction 30 and in the circumferential direction 34 against the fastening recesses 72 of the insert tool 12. The further fastening elements 58 secure the insert tool 12 thereby in the radial direction 30 and in the circumferential direction 34 rotational play. The fastening elements 14 and the further fastening elements 58 have a rectangular cross-section perpendicular to the axial direction 18, the corners of which are rounded. The insert tool 12 is formed by a hand tool insert tool (Figure 6). The insert tool 12 is provided in a coupled to the tool holder 10 state to a rotary or oscillating movement. The insert tool 12 has a machining area 76, which has a machining contour 78, such as, for example, cutting elements, saw teeth or another configuration that appears appropriate to a person skilled in the art. In addition, the insert tool 12 has a fastening region 80, which has the fastening elements 74 formed by the fastening recesses 72. The machining area 76 and the fastening area 80 extend in two planes, which are spaced apart from one another in the axial direction 18, and are connected to one another via an area 92 of the insertion tool running obliquely to the planes. The fasteners 14 are disposed on a circle 82 about a drive axis 84 of the insert tool 12 around. The fastening region 80, as viewed in the radial direction 30, is designed to be free of recesses within the fastening elements 74. Viewed in the radial direction 30, a material extension 86 is arranged within the circularly arranged fastening elements 74. The material extension 86 is continuous, ie continuously formed. The fastening region 80 is formed plate-shaped radially inside the fastening recesses 72.

In the radial direction 30, the fastening elements 74 are partially enclosed by a further material extension 88. In the radial direction 30, the fastening elements 74 are completely closed by the further material extension 88. That the fastening elements 74 are designed to be closed in a main extension plane of the insertion tool 12. The fastening elements 74 have perpendicular to the axial direction 18 a rectangular cross-section, whose corners are rounded. The insert tool 12 has a total of twelve fastening elements 74 formed by the fastening recesses 72.

The attachment region 80 of the insertion tool 12 has a coding element 90. The coding element 90 is formed by the material extension 86. The coding element 90 is provided for coupling the insert tool 12 to a tool holder, not shown, of an unsuitable hand tool. Prevent machine tool. In particular already known, not shown Oszillationshand tool machines have a drive shaft which extends in a coupled state in the axial direction 18 beyond the mounting portion 80 of the insert tool 12 addition. For this purpose, already known, not shown Oszillationseinsatzwerkzeuge in addition to the circularly arranged mounting recesses on a centering recess which is formed coaxially with the drive shaft 84. It is also conceivable that the coding element comprises a profiling or a survey. In particular, by the material extension 86, the insert tool 12 has a higher mass moment of inertia than the already known, not shown Oszillationseinsatzwerkzeuge. A drive unit and a gear unit of already known, not shown Oszillationshandwerkzeugmaschinen are not provided for this higher mass moment of inertia, thus it at a coupling and use of the insert tool 12 with one of the already known Oszillationshandwerkzeugmaschinen to increased wear and shortening the lifetime of Oszillationshandwerkzeugmaschine can come. By means of the coding element 90 formed by the material extension 86, a coupling of the insert tool 12 with one of the already known oscillation hand-held machine tools, not shown, is reliably prevented.

The following descriptions and the drawings of the further embodiments are essentially limited to the differences between the exemplary embodiments, reference being made in principle to the drawings and / or the description of the first exemplary embodiment with respect to identically named components, in particular with regard to components having the same reference numbers can. To distinguish the exemplary embodiments, the numerals 1 to 2 are preceded by the reference symbols of the further exemplary embodiments.

In Figure 8, a section of a tool holder 1 10 is shown. The tool holder 1 10 has a receiving side arranged fastener 1 14, which is provided for coupling with the insert tool 12. The tool holder 1 10 has four receptacles arranged on the receiving side. 1 to 14, which are provided for coupling with the insert tool 12. The mounting elements 1 14 correspond at least substantially to the fastening elements 14 already described. The tool holder 1 10 has a bearing unit 1 16, not shown, which is provided to mount the fastening elements 1 14 perpendicular to the axial direction 18 slidably. The bearing unit 1 16 includes a linear slide bearing. The bearing unit 1 16 is provided to mount the fastening elements 1 14 movable in the radial direction 30. The tool holder 1 10 has a clamping element 124 which extends parallel to the axial direction 18. The clamping element 124 has a cone-shaped region 126. The conical region 126 is arranged in the axial direction 18 in a region of the clamping element 124 facing away from the drive unit 42. The cone-shaped region 126 extends in the radial direction 30 to the outside. A larger diameter of the conical region 126 is arranged facing the drive unit 42 in the axial direction 18.

The fastening elements 14 have a region 162 which faces the drive unit 42 in the axial direction 18 and whose surface is inclined relative to the drive axis 32 and thus forms a negative cone shape. Of the

Region 162 extends in the radial direction 30 inwards. The region 162 corresponds to the conical region 126 of the clamping element 124. The tool holder 110 has a translation unit 122, which comprises the conical region 126 of the clamping element 124 and the region 162 of the fastening elements 14. The translation unit 122 is at a

Translation of a movement in the axial direction 18 in a movement in a direction deviating from the axial direction 18 of the fastening elements 1 14 is provided. The translation unit 122 is provided for translating a movement in the axial direction 18 into a movement of the fastening elements 14 in the radial direction 30.

The fastening elements 14 have a region 164 facing away from the region 162, which is designed in the form of a pin. The pin-shaped region 164 extends in the axial direction 18 beyond the drive shaft 36 and projects beyond the drive shaft 36 in the axial direction 18. In the pin-shaped region 164 have the Fastening elements 1 14 each have a translation surface 128. The translation surfaces 128 are formed by bevels, which are tilted to the axial direction 18. The translation surfaces 128 form part of a translation unit 120 of the tool holder 1 10. The translation unit 120 is provided to translate a completely different from an axial movement relative movement between the insert tool 12 and the fastener 1 14 in a clamping force F in the axial direction 18. The translation unit 120 is provided to translate the relative movement in the radial direction 30 between the insert tool 12 and the fastening element 1 14 into a clamping force F in the axial direction 18.

At one, the drive unit 42 facing away from the other fasteners 58 of the tool holder 1 10 are arranged. The tool holder 1 10 has eight further fastening elements 58. The further fastening elements 58 are arranged on a circle 60 around the drive axis 32 of the drive shaft 36. The fastening elements 14 and the further fastening elements 58 are arranged on the same circle 60 with the same radius. The further fastening elements 58 are cone-shaped.

In an assembled state of the insert tool 12 on the tool holder 1 10, the insert tool 12 is clamped by the movement of the fasteners 1 14 in the radial direction 30 outwardly from the fasteners 1 14 in the axial direction 18 on the tool holder 1 10 and held captive. The movement of the fastening elements 1 14 in the radial direction 30 outwardly causes a clamping force F in the axial direction 18 on the insert tool 12. As a result, the insert tool 12 is pressed towards the tool holder 1 10 and moves in the axial direction 18 at the other, cone-shaped fastening elements 58 along. In a completely clamped state of the insertion tool 12 in the tool holder 10, the further fastening elements 58 abut against the fastening elements 74 of the insertion tool 12 formed by the fastening recesses 72 in the radial direction 30 and in the circumferential direction 34. The further fastening elements 58 thereby secure the insertion tool 12 in the radial direction 30 and in the circumferential direction 34. The fastening elements 14 and the other fastening elements 14 Transmission elements 58 have a rectangular cross-section, whose corners are rounded.

FIG. 9 shows a detail of an alternatively configured tool holder 210. The tool holder 210 has a receiving element arranged on the receiving side 214, which is provided for coupling with the insertion tool 12. The tool holder 210 has a total of four receiving elements arranged on the receiving side 214, which are provided for coupling with the insert tool 12. The fastening elements 214 correspond at least substantially to the fastening elements 14 already described.

The tool holder 210 has a bearing unit 216, not shown, which is provided to mount the fastening elements 214 perpendicular to the axial direction 18 slidably. The bearing unit 216 comprises a linear sliding bearing. The bearing unit 216 is provided for movably supporting the fastening elements 214 in the radial direction 30. The tool holder 210 has a clamping element 224, not shown in more detail, which extends parallel to the axial direction 18.

The tool holder 210 has a translation unit 222 that includes a translation contour. The translation unit 222 is provided for translating movement in the axial direction 18 into movement in a direction deviating from the axial direction 18 of the fastening elements 214. The translation unit 222 is provided for translating axial movement 18 into movement of the fasteners 214 in the radial direction 30.

The fasteners 214 have a portion 264 which is formed pin-shaped. The pin-shaped region 264 extends in the axial direction 18 beyond the drive shaft 36 and projects beyond the drive shaft 36 in the axial direction 18. In the pin-shaped region 264, the fastening elements 214 each have a translation surface 228. The translation surfaces 228 are formed by bevels, which are tilted to the axial direction 18. The translation surfaces 228 partially form a translation unit 220 of the tool holder. 210. The translation unit 220 is intended to translate a completely deviating from an axial movement relative movement between the insert tool 12 and the fastener 214 in a clamping force F in the axial direction 18. The translation unit 220 is intended to translate the relative movement in the radial direction 30 between the insert tool 12 and the fastening element 214 into a clamping force F in the axial direction 18.

In an assembled state of the insert tool 12 on the tool holder 210, the insert tool 12 is clamped by the movement of the fastening elements 214 in the radial direction 30 inwardly by the fastening elements 214 in the axial direction 18 on the tool holder 210 and held captive. The movement of the fastening elements 214 inward in the radial direction 30 causes a clamping force F in the axial direction 18 on the insert tool 12. As a result, the insert tool 12 is pressed toward the tool holder 210 and moves in the axial direction 18 along further, cone-shaped fastening elements 58. In a fully strained state of the insert tool 12 in the tool holder 210, the further fastening elements 58 bear against the fastening elements 74 of the insert tool 12 formed by the fastening recesses 72 in the radial direction 30 and in the circumferential direction 34. The further fastening elements 58 thereby secure the insert tool 12 in the radial direction 30 and in the circumferential direction 34. The fastening elements 214 and the further fastening elements 58 have a rectangular cross-section, the corners of which are rounded.

It is also conceivable that the fastening elements 14, 1 14, 214 in the radial direction 30 are outwardly pivotable or circumferentially or tangentially displaceable and thereby cause a fastening force formed by a clamping force F in the axial direction 18 on the insert tool 12.

Claims

claims

1 . Insertion tool (12), in particular portable power tool insert tool, which is provided in at least one with at least one tool holder (10, 1 10, 210) coupled state at least substantially to an oscillating and / or rotational movement, with at least one processing area (76) and with at least one fastening region (80) which is provided at least essentially for coupling with the at least one tool holder (10, 110, 210) and in which at least two fastening elements (74) are at least substantially on a circle (82) around a Drive axle (84) are arranged around, characterized in that the fastening region (80) in a radial direction (30) within the circle (82) is formed at least substantially without recession.

2. insert tool (12), in particular hand tool insertion tool, according to the preamble of claim 1, in particular according to claim

1, characterized in that the fastening region (80) comprises at least one coding element (90).

3. insert tool (12) according to any one of the preceding claims, characterized in that the fastening region (80) in a radial direction

(30) within the circle (82) at least substantially

is formed fastener-free.

4. insert tool (12) according to any one of the preceding claims, characterized in that the fastening elements (74) for attachment in an axial direction (18), in the radial direction (30) and / or in a circumferential direction (34) are provided.

5. insert tool (12) according to any one of the preceding claims, characterized in that the fastening elements (74) are at least partially formed as an edge of at least one mounting recess (72).

6. insert tool (12) at least according to claim 2, characterized in that the coding element (90) at least substantially in the radial direction (30) within the circle (82) is arranged.

7. insert tool (12) at least according to claim 2, characterized in that the coding element (90) is at least substantially formed by an at least substantially plate-shaped material extension (86).

8. insert tool (12) according to any one of the preceding claims, characterized by at least one material extension (88) which is arranged at least substantially in the radial direction (30) outside of the circle (82).

9. insert tool (12) at least according to claim 5, characterized in that the fastening recesses (72) are formed at least substantially closed.

10. Hand tool (38) with a tool holder (10, 1 10, 210) which is at least substantially coupled with at least one insert tool (12) according to one of the preceding claims.

1 1. System with at least one insert tool (12) according to one of claims 1 to 9 and with at least one hand tool (38) having at least one to the insert tool (12) corresponding tool holder (10, 1 10, 210) according to claim 10.