EP2866988A1

EP2866988A1 - Tool coupling device

Info

Publication number: EP2866988A1
Application number: EP13729655.4A
Authority: EP
Inventors: Uwe Engelfried; Thomas Duerr; Jens Zieger; Petr Grulich
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2012-06-28
Filing date: 2013-06-10
Publication date: 2015-05-06
Anticipated expiration: 2033-06-10
Also published as: US9724841B2; DE102012211094A1; WO2014001066A1; EP2866988B1; CN104428113A; US20150158199A1; CN104428113B

Abstract

The invention is based on a tool coupling device for a receptacle of a machine tool separating device formed as a closed system, comprising at least one cutting strand tensioning unit (14a; 14b; 14c; 14d; 14e; 14f; 14g), which has at least one tensioning element (16a; 16b; 16c; 16d; 16e; 16f; 16g), and comprising at least one operating unit (20a; 20b; 20c; 20d; 20e; 20f; 20g) comprising at least one operating element (18a; 18b; 18c; 18d; 18e; 18f; 18g). It is proposed that the cutting strand tensioning unit (14a; 14b; 14c; 14d; 14e; 14f; 14g) comprises at least one gear unit (22a; 22b; 22c; 22d; 22e; 22f; 22g), which is intended for moving the tensioning element (16a; 16b; 16c; 16d; 16e; 16f; 16g) as a result of an actuation of the operating element (18a; 18b; 18c; 18d; 18e; 18f; 18g) of the operating unit (20a; 20b; 20c; 20d; 20e; 20f; 20g).

Description

description

Tool coupling device

State of the art

There are already known tool coupling devices for receiving a machine tool separating device formed as a closed system, which have at least one cutting strand clamping unit which has at least one clamping element and which have at least one operating unit comprising at least one operating element.

Disclosure of the invention

The invention is based on a tool coupling device, in particular a hand tool machine tool coupling device, for receiving a machine tool separating device embodied as a closed system, with at least one cutting strand clamping unit having at least one clamping element, and with at least one operating unit comprising at least one operating element.

It is proposed that the cutting strand clamping unit comprises at least one gear unit, which is provided to move the clamping element as a result of actuation of the operating element of the operating unit. Thus, the clamping element is preferably connected via the gear unit movement-dependent with the operating element. The term "provided" should be understood to mean in particular specially programmed, designed and / or equipped.The tool coupling device is preferably intended to receive the machine tool separating device in a positive-locking and / or non-positive manner or to close the machine tool separating device by means of a positive-locking and / or to fix by means of a non-positive connection to a main body of the tool coupling device. The power-tool parting device is preferably received by the tool-coupling device or fixed to the main body of the tool-coupling device in order to transmit drive forces to the machine tool parting device. Particularly preferably, the tool coupling device has at least one holding unit, which is provided to fix the power-tool parting device in at least one state on the main body. The holding unit preferably comprises at least the operating unit. In this case, the operating element preferably exerts a holding force on the machine tool separating device at least in one state, in particular in at least one state of the power tool separating device connected to the tool coupling device. The operating element fixes the machine tool separating device preferably by means of a positive and / or by means of a non-positive connection to the main body of the tool coupling device. However, it is also conceivable that the holding unit has another, a skilled person appear appropriate design. Furthermore, the holding unit preferably comprises at least one fixing unit, which comprises at least one fixing element, which is provided to fix the operating element in at least one position. Thus, the tool coupling device for receiving a closed-system Werkzeugmaschinentrennvor- device, at least the cutting strand clamping unit, which comprises at least the clamping element, and at least the holding unit comprising the operating unit, wherein the cutting strand clamping unit comprises at least the gear unit, which is intended to the tensioning element due to an actuation of the

Operating element to move the control unit comprehensive holding unit.

The term "cutting strand clamping unit" is intended here to define in particular a unit which is intended to exert a clamping force on the cutting strand for clamping or prestressing a cutting strand of the power-tool parting device at least in a state connected to the tool-coupling device of the machine tool cutting device In this case, it is preferably mounted movably on the main body of the tool coupling device relative to the main body of the tool coupling device

Unit understood that has at least the operating element, which is directly actuated by an operator and which is intended by a Actuation and / or by entering parameters to influence and / or change a process and / or a state of a unit coupled to the operating unit. In particular, the term "operating element" is intended to define an element which is provided to receive an input quantity from an operator during an operating procedure and in particular to be contacted directly by an operator, wherein a touch of the operating element senses and / or an actuating force exerted on the operating element sensed and / or mechanically passed to actuate a unit, in particular the gear unit on.

A "gear unit" is to be understood here in particular as a mechanical mechanism by means of which at least one movement variable of at least one component, such as a movement type (rotation, translation, etc.), a movement distance, a movement speed and / or an acceleration, is variable the gear unit is provided to over- and / or undercut a force and / or torque and / or to convert a movement type, such as a conversion of a rotational movement of a component into a translational movement of another component In this case, the gear unit can be designed as an eccentric gear, as a lever gear, as a cam gear, as a screw gear, etc. By means of the embodiment according to the invention, v orteilhaft a comfortable-to-use tool coupling device can be achieved. Advantageously, an automatic clamping operation by means of the cutting strand clamping unit can be realized by an actuation of the operating element.

Furthermore, it is proposed that the operating element is mounted pivotably about an axis of movement of the operating element running at least substantially parallel to a main extension plane of the operating element. "Substantially parallel" is to be understood here in particular as 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 term "main extension plane" should in particular define a plane in which the operating element has a maximum Has extension. The operating element is in this case preferably pivotable about a pivoting angle, which is in particular greater than 5 °, preferably greater than 45 ° and particularly preferably greater than 75 °. Preferably, the main extension plane of the operating element extends at least substantially parallel to an axis of rotation of a drive element rotatably mounted in the main body of the tool coupling device in a control element pivoted completely into an opening position. In this case, the movement axis of the operating element preferably extends at least substantially perpendicular to a rotational axis of a drive element of the tool coupling device or a portable machine tool which is rotatably mounted in the main body of the tool coupling device and which comprises the tool coupling device. The term "substantially perpendicular" is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in one plane, including an angle of 90 ° and the angle a maximum deviation of, in particular, less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 ° C. Advantageously, a lever principle for generating a clamping force can be used Advantageously, a small amount of force is required.

In an alternative embodiment of the tool coupling device according to the invention, it is proposed that the operating element is rotatably mounted about a movement axis of the operating element extending at least substantially perpendicular to a main extension plane of the operating element. The main extension plane of the operating element preferably extends at least substantially perpendicular to the axis of rotation of the drive element. By means of the embodiment according to the invention can advantageously be achieved a compact tool coupling device.

It is also proposed that the clamping element is mounted translationally movable. The term "translationally movably mounted" is intended here to define, in particular, a mounting of a unit and / or an element relative to at least one further unit and / or a further element, wherein the unit and / or the element, in particular decoupled from an elastic deformation of the unit and / or the element and decoupled from conditioned by Bearing game evoked movement possibilities, a movement possibility along at least one axis along a distance greater than 1 mm, preferably greater than 5 mm and more preferably greater than 10 mm. By means of the embodiment according to the invention can advantageously be formed a compact tool coupling device.

In addition, it is proposed that the gear unit has at least one link element to a movement of the clamping element as a result of actuation of the operating element. A "gate element" is to be understood here in particular as an element which has at least one recess, in particular a groove, into which a further element corresponding to the element engages and / or which has at least one extension which projects into a recess of a As a result of a movement of the element, a forced movement of the further element takes place as a function of a geometric shape of the recess, Preferably, the link element is designed as a link plate or as a link translation element. It is structurally simple to achieve a movement of the tensioning element on a predetermined trajectory, thus advantageously achieving a structurally simple restriction of the movement of the tensioning element.

Furthermore, it is proposed that the link element is mounted translationally movable. The link element preferably has a movement axis which runs at least substantially perpendicular to the axis of rotation of the drive element. Preferably, the link element is guided translationally by two at least substantially mutually parallel linear guide elements of the gear unit. By means of the inventive design of the tool coupling device can advantageously be achieved a precise guidance of the link element.

Furthermore, it is proposed in an alternative embodiment of the tool coupling device that the link element is rotatably mounted. The link element preferably has a movement axis which extends at least substantially parallel to the axis of rotation of the drive element. It can be advantageously achieved a flat construction gear unit. Thus, advantageously, a compact tool coupling device can be achieved. In addition, it is proposed that the cutting strand clamping unit comprises at least one spring element which is provided to act on the clamping element and / or a link element of the gear unit with a spring force. A "spring element" should in particular be understood to mean a macroscopic element which has at least two mutually spaced ends which are elastically movable in a normal operating state along a movement path relative to each other, wherein the movement distance is at least greater than 0.5 mm, in particular greater than 1 mm, preferably greater than 2 mm and particularly advantageously greater than 3 mm, and in particular produces a counterforce which is dependent on an elastic movement of the ends relative to one another and which is preferably proportional to the elastic movement of the ends relative to one another By a "macroscopic element" is meant in particular an element with an extension of at least 1 mm, in particular of at least 5 mm and preferably of at least 10 mm. The spring element may in this case be designed as a tension spring, as a compression spring, as a torsion spring, as a bending spring, etc. Particularly preferably, the spring element is designed as a helical compression spring or as a leg spring. However, it is also conceivable that the spring element has another, a skilled person appear appropriate design. By means of the embodiment of the tool coupling device according to the invention can advantageously be achieved in at least one operating position, in particular in a clamping position, a bias of the clamping element.

Furthermore, it is proposed that the gear unit comprises at least one lever element that moves a link element of the gear unit to a movement of the clamping element as a result of actuation of the operating element. A "lever element" is to be understood here as meaning, in particular, an element which is mounted so as to be pivotable about at least one movement axis of the element and in particular has a maximum extent along a direction extending at least substantially perpendicular to the movement axis, in order to form at least one lever arm The lever element is designed as a two-sided lever element, which, viewed from the axis or a pivot point in two oppositely directed directions, forms a load arm and a force arm respectively Move of the clamping element cooperate with each other or are interconnected. By means of the embodiment according to the invention can advantageously be generated a force translation to a movement of the clamping element. Thus, advantageously, a low actuation force of an operator for actuating the operating element can be translated into a large actuating force of the tensioning element.

It is also proposed that the gear unit comprises at least one eccentric element which cooperates with the clamping element to move the clamping element as a result of an actuation of the operating element. An "eccentric element" is to be understood here as meaning, in particular, an element which is mounted so as to be pivotable about at least one movement axis of the element, a center, in particular a center of symmetry, of the element being arranged outside the movement axis It can be advantageous to generate a motion conversion of a movement of the operating element into a movement of the tensioning element.

In addition, it is proposed that the tool coupling device has at least one fixing unit, which comprises at least one fixing element, which is provided to fix the operating element in at least one position. Preferably, the fixing element is rotatably mounted. However, it is also conceivable that the fixing element is mounted translationally movable. By means of the embodiment according to the invention can advantageously be prevented unintentional movement of the operating element.

Furthermore, the invention is based on a portable power tool with a tool coupling device according to the invention. The tool coupling device is preferably provided for the positive and / or non-positive coupling with a machine tool separating device. Under one

The term "portable machine tool" is to be understood here as meaning, in particular, a machine tool, in particular a hand-held power tool, which can be transported without transport by an operator more preferably less than 5 kg, it can be advantageously achieved a portable machine tool on which a machine tool cutting device can be arranged particularly comfortable. In addition, the invention is based on a machine tool system having a machine tool according to the invention and a power-tool parting device which has at least one cutting strand and at least one guide unit which forms a closed system together with the cutting strand. A "cutting strand" is to be understood here as meaning, in particular, a unit 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 It is intended to separate the workpiece into at least two physically separate parts and / or to at least partially separate and / or remove material particles of the workpiece starting from a surface of the workpiece the cutting strand has another configuration which appears expedient to a person skilled in the art, for example an embodiment as a cutting line on which cutting elements are fixed st, a constraining force at least along a direction perpendicular to a cutting direction of the cutting strand on the cutting strand to exercise a

Allowing movement of the cutting strand along the cutting direction. A "cutting direction" is to be understood here as meaning, in particular, a direction along which the cutting strand is used to produce a cutting gap and / or for separating and / or removing material particles of a workpiece to be machined in at least one operating state as a result of a drive force and / or a drive torque, Preferably, the cutting strand is moved relative to the guide unit in an operating state along the cutting direction The term "closed system" is intended here to define, in particular, a system comprising at least two components which, by means of an interaction, are in a disassembled state of the system of a system superordinate system, in particular the tool coupling device, maintain a 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 connection of at least two components, the 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.

In particular, the machine tool separating device has a maximum dimension of less than 10 mm, preferably less than 8 mm and particularly preferably less than 5 mm, viewed along a direction running at least substantially perpendicular to a cutting plane of the machine tool separating device. Preferably, the dimension is formed as the width of the machine tool separating device. Particularly preferably, the power-tool parting device, viewed along the direction running at least substantially perpendicularly to the cutting plane of the power-tool parting device, has an at least substantially constant maximum along an overall length of the power-tool-splitting device

Dimension on. Thus, the power-tool parting device is preferably provided to produce a cutting gap which, viewed along the direction running at least substantially perpendicular to the cutting plane of the machine-tool separating device, has a maximum dimension of less than 5 mm. By means of the embodiment according to the invention, a machine tool system can advantageously be achieved that is particularly adaptable to different fields of use, in that the machine tool separating device can advantageously be removed from the tool coupling device.

The tool coupling device according to the invention, the portable power tool according to the invention and / or the power tool system according to the invention should / should not be limited to the application and embodiment described above. In particular, the tool coupling device according to the invention, the portable power tool according to the invention and / or the machine tool system according to the invention for performing a function described herein may have a different number from a number of individual elements, components and units mentioned 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 portable power tool according to the invention with a tool coupling device according to the invention in a schematic representation,

2 is a detailed view of the tool coupling device according to the invention in a schematic representation,

3 is a sectional view of the tool coupling device according to the invention in a schematic representation,

4 is a detailed view of a carrier element of a cutting strand clamping unit of the tool coupling device according to the invention in a schematic representation,

5 shows a sectional view of the tool coupling device according to the invention with a machine tool separating device arranged in the tool coupling device according to the invention, in a schematic representation,

6 shows a further sectional view of the tool coupling device according to the invention with the machine tool separating device arranged in the tool coupling device according to the invention, in a schematic representation,

7 is a detailed view of an alternative tool coupling device according to the invention in a schematic representation,

8 is a sectional view of the alternative tool coupling device according to the invention in a schematic representation, an exploded view of the alternative tool coupling device according to the invention in a schematic representation,

a detailed view of another, alternative tool coupling device according to the invention in a schematic representation,

a further detailed view of the further, alternative tool coupling device according to the invention in a schematic representation,

a sectional view of the other alternative tool coupling device according to the invention in a schematic representation,

a sectional view of the other alternative tool coupling device according to the invention from Figure 13 in a schematic representation,

a further detailed view of the further, alternative tool coupling device according to the invention from FIG. 15 in a schematic representation,

FIG. 17 shows a further detailed view of the further alternative tool coupling device according to the invention from FIG. 17 in a schematic representation,

a detailed view of another, alternative tool coupling device according to the invention in a schematic representation, a further detailed view of the further, alternative tool coupling device according to the invention from FIG. 19 in a schematic illustration,

FIG. 19 shows a sectional view of the further, alternative tool coupling device according to the invention from FIG. 19 in a schematic representation,

a detailed view of an alternative embodiment of a power-tool-part removal device in a schematic representation,

a detailed view of a further alternative embodiment of a power-tool-part removal device in a schematic representation,

a detailed view of a further alternative embodiment of a power-tool-part removal device in a schematic representation, 31 shows a detailed view of a further, alternative embodiment of a power-tool parting device-down unit in a schematic representation,

Fig. 32 is a detail view of an alternative embodiment of a

Machine tool separator torque holding unit in a schematic representation,

33 is a detail view of another alternative embodiment of a

Machine tool separator torque holding unit in a schematic representation,

Fig. 34 is a detail view of another alternative embodiment of a

Machine tool separator torque holding unit in a schematic representation and

Fig. 35 is a detail view of another alternative embodiment of a

Machine tool separator torque holding unit in a schematic representation.

Description of the embodiments

FIG. 1 shows a portable power tool 38a with a power-tool cutting device 12a arranged on a tool-coupling device 10a of the portable power tool 38a. The portable power tool 38a and the power tool separating device 12a together constitute a machine tool system. The power-tool parting device 12a comprises at least one cutting strand 40a and at least one guide unit 42a for guiding the cutting strand 40a. The guide unit 42a and the cutting strand 40a together form a closed system. Thus, the power tool separating device 12a is formed as a closed system. The portable power tool 38a has the tool coupling device 10a for the positive and / or non-positive coupling of the machine tool separating device 12a. The tool coupling device 10a is for accommodating the closed system designed as a machine separating device 12a provided. In this case, the tool coupling device 10a comprises at least one cutting strand clamping unit 14a which has at least one clamping element 16a and which has at least one operating unit 20a comprising at least one operating element 18a. Further, the portable power tool 38a has a machine tool housing 44a enclosing a drive unit 46a and an output gear unit 48a of the portable power tool 38a. The drive unit 46a and the

Output gear unit 48a are operatively connected to one another in a manner already known to a person skilled in the art in order to generate a drive torque which can be transmitted to the machine tool separating device 12a.

The output gear unit 48a is formed as an angle gear. The drive unit 46a is designed as an electric motor unit. However, it is also conceivable for the drive unit 46a and / or the output gear unit 48a to have another design that appears appropriate to a person skilled in the art, such as an embodiment of the drive unit 46a as a hybrid drive unit or as a combustion drive unit, etc., and / or a configuration of the output drive unit 48a as Worm gear, etc. The drive unit 46a is provided to the cutting strand 40a of the power tool separating device 12a in at least one operating state on the

Drive output gear unit 48a to drive. In this case, the cutting strand 40a in the guide unit 42a of the power-tool parting device 12a is moved along a cutting direction 50a of the cutting strand 40a relative to the guide unit 42a. Figure 2 shows the tool coupling device 10a in one of the portable

Machine tool 38a disassembled state. The tool coupling device 10a comprises a base body 52a, which is rotatably mounted in a connection housing 54a of the tool coupling device 10a. The main body 52a is in this case rotatably mounted about a rotation axis 68a of a drive element 62a of the tool coupling device 10a in the connection housing 54a.

The attachment housing 54a is fixed to the machine tool housing 44a of the portable power tool 38a in a state of the tool coupling device 10a mounted on the portable power tool 38a. To fix a rotational position of the main body 52a relative to the connection housing 54a, the tool coupling device 10a has at least one Rotary positioning unit 56a on. The rotational positioning unit 56a in this case comprises at least one positioning element 58a for fixing the base body 52a in a position relative to the connection housing 54a. The positioning element 58 a is in this case designed as a spring-biased locking pin, which with

Positioning recesses (not shown here) of the main body 52a in a manner already known to a person skilled in the art cooperates. However, it is also conceivable that the Drehpositioniereinheit 56a another, a person skilled in the appear appropriate design, such as a configuration as a toothing, etc.

The main body 52a further has a rotational play opening 60a (FIG. 3) in which the drive element 62a of the tool coupling device 10a is arranged. In this case, the drive element 62a, viewed along a direction at least substantially perpendicular to the axis of rotation 68a of the drive element 62a extending direction, relative to the main body 52a spaced from the rotational play opening 60a defining edge region of the main body 52a. The drive element 62a is designed as a drive gear. The connection housing 54a comprises a bearing recess 64a in which a bearing element 66a of the tool coupling device 10a is arranged for rotatable mounting of the drive element 62a. The bearing element 66a is designed as a bearing sleeve. However, it is also conceivable that the bearing element 66a is designed as a rolling bearing. The drive element 62a is provided to transmit a drive force of the drive unit 46a to the cutting strand 40a. Thus, the drive element 62a engages in the state connected to the tool coupling device 10a state of the power tool separating device 12a in the

Cutting strand 40a. In addition, in a state of the tool coupling device 10a mounted on the portable power tool 38a, the drive element 62a is non-rotatably connected to an output element (not shown here in detail) of the output gear unit 48a.

Furthermore, the operating element 18a of the operating unit 20a of the tool coupling device 10a is mounted pivotably about a movement axis 24a of the operating element 18a extending at least substantially parallel to a main extension plane of the operating element 18a. Here, the operating element 18a is pivotally mounted on the main body 52a. The movement Axis 24a of the operating element 18a extends, viewed in a projection plane in which the movement axis 24a and the rotation axis 68a of the drive element 62a are projected, at least substantially perpendicular to the axis of rotation 68a. The operating element 18a is pivotally mounted at 90 ° relative to the main body 52a. However, it is also conceivable that the operating element 18a is mounted pivotably relative to the main body 52a by an angle deviating from 90 °.

The tool coupling device 10a further comprises at least one fixing unit 34a, which comprises at least one fixing element 36a, which is provided to fix the operating element 18a in at least one position. The fixing element 36a is provided to fix the operating element 18a in a tool fixing position of the operating element 18a. The fixing element 36a is pivotally mounted for this purpose. Here, the fixing element 36a is pivotally mounted on the control element 18a. The fixing element 36a comprises at least two

Latching areas 70a, 72a. However, it is also conceivable that the fixing element 36a has one of two different number of latching regions 70a, 72a. The latching regions 70a, 72a are viewed in an at least substantially perpendicular to the main plane of extension of the operating element 18a extending plane or viewed in an at least substantially parallel to the axis of rotation

68a of the drive element 62a extending plane, circular arc-shaped and each define a circular arc-shaped recess. In addition, the latching regions 70a, 72a cooperate in a control element fixing position with fixing bolts 74a, 76a of the fixing unit 34a (FIG. 6). The fixing bolts 74a, 76a are fixed to the main body 52a. Thus, the fixing unit 34a is provided to fix the operating element 18a by means of a positive connection in the tool fixing position. To secure the fixing element 36a in the operating-element fixing position, the fixing element 36a also has a securing recess 80a which cooperates in the operating-element fixing position of the fixing element 36a with a latching extension 82a of the fixing unit 34a (FIG. 5). The latching extension 82a is in this case arranged on the main body 52a. Here, the latching extension 82a is integrally formed integrally with the base body 52a. However, it is also conceivable that the latching projection 82a is formed separately from the base body 52a and by means of a person skilled in the art meaningful fastener is attached to the body 52a.

In the tool fixing position, in a state coupled to the tool coupling device 10a, the machine tool separating device 12a is subjected to a clamping force by means of the operating element 18a in a receiving recess 78a of the main body 52a in the direction of the main body 52a. This clamping force is generated by means of a pivoting movement of the operating element 18a in the direction of the receiving recess 78a and by means of an interaction of the fixing element 36a and the fixing bolts 74a, 76a in the tool fixing position of the operating element 18a. Thus, at least the operating unit 20a and the fixing unit 34a form a holding unit of the tool coupling device 10a by means of cooperation with the main body 52a. The holding unit is provided to the machine tool separating device 12 a in one with the

Tool coupling device 10a coupled state of the machine tool separating device 12a with an at least substantially parallel to the axis of rotation 68a of the drive member 62a extending direction. However, it is also conceivable that the holding unit has another, to a professional appear appropriate design (Figures 22 to 31).

The power-tool parting device 12a is further secured in a form coupled to the tool coupling device 10a state of the machine tool separating device 12a by means of the receiving recess 78a of the main body 52a against rotational movement along a rotation axis 68a of the drive member 62a extending direction of rotation. Thus, the receiving recess 78a forms at least one

Machine tool separator torque retaining element of a

Machine tool separating device torque holding unit. For this purpose, the receiving recess 78a has a shape corresponding to an outer shape of at least one subregion of the machine tool separating device 12a, in particular of a subregion of the guide unit 42a. Thus, the receiving recess 78a is formed as a negative mold of at least a portion of the machine tool separating device 12a, in particular of a portion of the guide unit 42a. However, it is also conceivable that the main body 52a has another embodiment which appears expedient to a person skilled in the art, which can largely prevent a rotational movement of the power-tool parting device 12a in a state of the power-tool parting device 12a coupled to the tool-coupling device 10a (FIGS. 32 to 35).

Furthermore, the cutting strand clamping unit 14a comprises at least one gear unit 22a, which is provided to move the clamping element 16a as a result of an actuation of the operating element 18a of the operating unit 20a. In this case, the clamping element 16a is mounted in a translationally movable manner in a guide recess 84a of the main body 52a. The guide recess 84a is disposed in the receiving recess 78a. The clamping element 16a is designed as a clamping bolt, which engages in a coupled to the tool coupling device 10a state of the machine tool separating device 12a in a clamping recess 86a (Figure 5) of the machine tool separating device 12a. The tensioning element 16a is formed integrally with a carrier element 88a of the cutting strand tensioning unit 14a. The carrier element 88a is mounted in a translationally movable manner in the main body 52a. In addition, the carrier element 88a comprises an actuating region 90a which, with a gear element of the gear unit 22a, causes the clamping element 16a to move as a result of a movement

Actuation of the operating element 18a cooperates. The transmission element of the gear unit 22a is in this case designed as an eccentric element 32a (FIG. 3). Thus, the gear unit 22a comprises at least the eccentric element 32a, which cooperates with the clamping element 16a to move the clamping element 16a as a result of an actuation of the operating element 18a via the carrier element 88a. The eccentric element 32a is integrally formed with the operating element 18a (FIG. 3). The eccentric element 32a is arranged eccentrically or asymmetrically to the movement axis 24a of the operating element 18a on the operating element 18a.

Furthermore, the cutting strand clamping unit 14a has at least one spring element 28a, which is provided to act on the clamping element 16a with a spring force. In this case, the spring element 28a is supported at one end on the base body 52a and with a further end, the spring element 28a is supported on a clamping force support region 92a of the carrier element 88a. In addition is conceivable that the support member 88a to support a clamping force of the clamping element 16a an additional clamping and / or locking of the support member 88a on the base body 52a is possible, such as by a rough surface of the support member 88a or by a

Carrier element locking unit, etc. The clamping force support portion 92a and the operating portion 90a of the support member 88a are connected to each other via a connecting portion 96a of the support member 88a. The connection region 96a has an elliptical shape (FIG. 4). In a pivoted away from the base 52 a position of the operating element 18 a, the spring element 28 a is compressed due to an interaction of the eccentric element 32 a and the actuating portion 90 a of the support member 88 a. Thereby, the tension member 16a is moved to a guide unit insertion position. For a coupling of the power-tool parting device 12a with the tool-coupling device 10a, the power-tool parting device 12a is inserted into the receiving recess 78a of the main body 52a along a direction at least substantially parallel to the axis of rotation 68a of the drive element 62a. In this case, the operating element 18a is arranged in the position pivoted away from the main body 52a. When the machine-tool parting device 12a is inserted into the receiving recess 78a, the drive element 62a is inserted into a coupling recess 94a of the guide unit 42a (FIG. 5). As a result, the cutting strand 40a engages with the drive element 62a. In addition, the clamping element 16a is inserted into the clamping recess 86a of the guide unit 42a. As a result of a movement of the operating element 18a into the tool fixing position, the eccentric element 32a releases the actuating region 90a of the carrier element 88a. Thus, the carrier element 88a, together with the clamping element 16a by a spring force of the spring element 28a translationally in a direction away from the drive element 62a direction in a clamping position of

Clamping element 16a moves. As a result, the guide unit 42a is moved relative to the drive element 62a. This leads to a tensioning of the cutting strand 40a by the spring force of the spring element 28a or by the movement of the clamping element 16a. Thus, an automatic clamping of the cutting strand 40a takes place as a result of a clamping of the power-tool parting device. tion 12a in the receiving recess 78a of the main body 52a. As a result of the fixation of the operating element 18a by means of the fixing unit 34a, a self-locking of the cutting strand clamping unit 14a is also effected in order to avoid unintentional release of a clamping force for tensioning the cutting strand 40a.

In Figures 7 to 35 alternative embodiments are shown. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, the reference numerals of the embodiments, the letters a to g or superscripts added. The following description is essentially limited to the differences from the first exemplary embodiment in FIGS. 1 to 6, wherein reference can be made to the description of the first exemplary embodiment in FIGS. 1 to 6 with regard to components, features and functions remaining the same.

FIG. 7 shows an alternative tool coupling device 10b, which is provided for receiving a machine tool separating device 12b designed as a closed system, in a state disassembled by a portable power tool (not shown here in detail). The portable machine tool has an analogous configuration to the portable power tool 38a described in FIGS. 1 to 6. The portable power tool and the power tool separator 12b together form a machine tool system. The tool coupling device 10b has at least one cutting strand clamping unit 14b which comprises at least one clamping element 16b and at least one comprising at least one operating element 18b

Control unit 20b on. In this case, the operating element 18b is rotatably mounted about a movement axis 24b of the operating element 18b extending at least substantially perpendicular to a main extension plane of the operating element 18b or about an axis of movement 24b extending at least substantially parallel to a rotational axis 68b of a drive element 62b of the tool coupling device 10b.

Furthermore, the operating unit 20b comprises at least one clamping element 98b, which is provided to act on the machine tool separating device 12b in a tool fixing position of the operating element 18b with a clamping force in the direction of a main body 52b of the tool coupling device 10b. The clamping element 98b is designed in the shape of a circular ring segment. In addition is the clamping element 98b rotatably mounted in the main body 52b. For generating a clamping force, the clamping element 98b has a helical or a thread-shaped clamping region 100b. The clamping portion 100b is disposed on an outer periphery of the clamping member 98b. However, it is also conceivable for the clamping region 100b to be arranged on the clamping element 98b at a different position, which seems appropriate to a person skilled in the art, for example on an inner circumference of the clamping element 98b. The chucking portion 100b has a slope as viewed along a circumferential direction around the rotation axis 68b of the driving member 62b. Thus, the chucking portion 100b is inclined along an entire extension of the chucking portion 100b relative to a main extension plane of the chucking member 98b. The clamping region 100b acts to generate a clamping force with a

Clamping groove (not shown here in detail) of the main body 52b together, in which the clamping portion 100b engages.

For a movement of the clamping element 98b as a result of an actuation of the operating element 18b, in particular as a result of a rotation of the operating element 18b, the clamping element 98b comprises a bolt-shaped actuating region 102b (FIG. 9). The actuation region 102b is arranged in a mounted state of the clamping element 98b in a circular-segment-segment-shaped movement guide recess 104b of the main body 52b (FIG. 9). The operating member 18b has a motion transmitting member 106b provided to receive the operating portion 102b of the clamping member 98b. The motion transmission element 106b is designed as a cup-shaped depression, which is formed corresponding to the bolt-shaped actuating region 102b of the clamping element 98b. However, it is also conceivable that the motion transmission element 106b has another, a skilled person appear appropriate design, such as a configuration as a circular through hole, etc.

Furthermore, the cutting strand clamping unit 14b comprises at least one gear unit 22b, which is provided to move the clamping element 16b as a result of an actuation of the operating element 18b of the operating unit 20b. Here, the clamping element 16b is translationally movable in a guide recess 84b of the main body 52b of the tool coupling device 10b. siege. The gear unit 22b has at least one link element 26b for a movement of the clamping element 16b as a result of an actuation of the operating element 18b. The link element 26b is in this case rotatably mounted. Furthermore, the link element 26b is designed as a crank disc, which has at least one clamping element guide link 1 10b and at least two link element guide recesses 12b, 14b (FIG. 9). Here, the clamping element 16b is arranged in an assembled state in the clamping element guide slot 1 10b. In this case, the clamping element guide slot 1 10b has a helical course relative to the axis of rotation 68b of the drive element 62b. In addition, the cutting strand clamping unit 14b comprises at least one spring element 28b, which is provided to apply a spring force to the clamping element 16b (FIGS. 8 and 9). The spring element 28b is designed as a spring plate, which acts on the clamping element 16b in the direction of a clamping position of the clamping element 16b with a spring force. In addition, the cutting strand clamping unit 14b comprises at least one further spring element 108b, which is provided to apply a spring force to the gate element 26b of the gear unit 22b (FIGS. 8 and 9). The further spring element 108b is designed as a leg spring. In this case, the further spring element 108b is supported with one end on the main body 52b and with a further end, the further spring element 108b is supported on the link element 26b.

The gate element 26b is moved against the spring force of the further spring element 108b by means of the clamping element 98b or by means of a rotary movement of the operating element 18b via the clamping element 98b. For this purpose, the clamping element 98b on a Mitnahmefortatz 1 16b, which extends in the direction of

Sliding element 26b extends. The driving extension 16b acts to move the link element 26b with a Bewegungsmitnahmebereich 1 18b of the link element 26b together (Figure 9). As a result, the link element 26b is moved at least in one direction as a function of a movement of the clamping element 98b. The tensioning element 16b is moved into a guide unit insertion position as a result of a movement of the link element 26b by means of the tensioning element guide linkage 10b. In addition, the clamping element 98b releases a receiving recess 78b of the main body 52b for receiving the power-tool parting device 12b. The guide recess 84b, in which the tensioning element 16b is guided, is arranged on the base body 52b in the region of the receiving recess 78b.

After release of the receiving recess 78b and movement of the clamping element 16b into the guide unit insertion position, the machine tool separating device 12b can be inserted into the receiving recess 78b along a direction at least substantially parallel to the axis of rotation 68b of the drive element 62b. Subsequently, as a result of a rotational movement of the operating element 18b, the clamping element 98b is moved into a clamping position, whereby a clamping force is exerted on the machine tool separating device 12b in the direction of the main body 52b. In addition, the link element 26b is rotated as a result of the spring force of the further spring element 108b, and the clamping element 16b is moved translationally in the guide recess 84b by means of the clamping element guide channels 11b. As a result, a guide unit 42b of the power-tool parting device 12b is moved relative to the drive element 62b. This leads to a tensioning of a cutting strand 40b of the power-tool parting device 12b by the spring force of the spring element 28b and of the further spring element 108b or by the movement of the tension element 16b. Thus, automatic clamping of the cutting strand 40b takes place as a result of clamping the machine tool separating device 12b in the receiving recess 78b of the main body 52b. The clamping element guide slot 1 10b is in this case designed such that by means of an interaction of the clamping element guide slot 10b with the spring element 28b and the further spring element 108b, self-inhibition of movement of the clamping element 16b into a guide unit insertion position occurs. In addition, the further spring element 108b acts via the link element 26b on the clamping element 98b, which in turn acts on the operating element 18b. As a result, the clamping element 98b is acted upon by the spring force of the further spring element 108b in the clamping position. However, it is also conceivable that the clamping element 98b or the control element 18b are mounted decoupled from the spring force and are held by means of a fixing unit of the tool coupling device 10b in the clamping position.

FIG. 10 shows another alternative tool coupling device 10c, which is used to receive a tool system designed as a closed system. machine separating device 12c is provided (Figure 12), in one of a portable power tool (not shown here) disassembled state. The portable power tool has an analogous configuration to the portable power tool 38a described in FIGS. 1 to 6. The portable power tool and the power tool separator 12c together form a machine tool system. The tool coupling device 10c has at least one cutting strand clamping unit 14c, which comprises at least one clamping element 16c, and at least one operating unit 20c comprising at least one operating element 18c. The operating element 18c is mounted so as to be pivotable about a movement axis 24c of the operating element 18c extending at least substantially parallel to a main extension plane of the operating element 18c or about an axis of motion 24c of the tool coupling device 10c running at least substantially perpendicular to a rotation axis 68c of a drive element 62c.

Furthermore, the cutting strand clamping unit 14c comprises at least one gear unit 22c, which is provided to move the clamping element 16c as a result of an actuation of the operating element 18c of the operating unit 20c. The gear unit 22c has at least one link element 26c for a movement of the clamping element 16c as a result of an actuation of the operating element 18c. The

Sliding element 26c is mounted translationally movable. In this case, the link element 26c is guided in an axial bearing recess 120c of a base body 52c of the tool coupling device 10c (FIG. 11). The link element 26c comprises a clamping element guide slot 1 10c for a movement of the clamping element 16c. The clamping element guide slot 1 10c has an at least substantially transversely to a movement axis of the link element 26c extending course. Thus, the clamping element guide link 1 10c is inclined relative to the movement axis of the link element 26c. Furthermore, the gear unit 22c comprises at least one lever element 30c which, as a result of an actuation of the operating element 18c, moves the link element 26c of the gear unit 22c to move the clamping element 16c. The lever element 30c is rotatably mounted about a movement axis of the lever element 30c extending in the main body 52c at least substantially parallel to the axis of rotation 68c of the drive element 62c. To a movement of the Kulis Senelements 26 c is the lever member 30 c at one end to the link element 26 c. In addition, the lever member 30c on an actuating extension 122c, which cooperates with the operating element 18c. Furthermore, the cutting strand clamping unit 14c comprises at least one spring element 28c, which is provided to act on the clamping element 16c and / or the gate element 26c of the gear unit 22c with a spring force. The spring element 28c is designed as a leg spring. In this case, the spring element 28c is supported at one end on the main body 52c and with a further end, the spring element 28c is supported on the link element 26c. Furthermore, the tool coupling device 10c has at least one fixing unit 34c, which comprises at least one fixing element 36c, which is provided to fix the operating element 18c in at least one position. The fixing unit 34c has an analogous configuration to the fixing unit 34a described in FIGS. 1 to 6. Thus, the operating element 18c is fixed in a tool fixing position of the operating element 18c by the fixing element 36c (FIG. 12).

For a coupling of the power-tool parting device 12c to the tool-coupling device 10c, the power-tool parting device 12c is inserted along a direction at least substantially parallel to the axis of rotation 68c of the drive element 62c into a receiving recess 78c of the main body 52c. In this case, the operating element 18c is arranged in a position pivoted away from the main body 52c. The drive element 62c is inserted into the receiving recess 78c when the machine tool separating device 12c is inserted into a coupling recess 94c of a guide unit 42c of the power-tool parting device 12c. As a result, a cutting strand 40c of the power-tool parting device 12c comes into engagement with the drive element 62c. In addition, the clamping element 16c is inserted into a clamping recess 86c of the guide unit 42c. As a result of a movement of the operating element 18c into the tool fixing position, the operating element 18c is actuated by means of an eccentric element 32c of the gear unit

22c, the lever member 30c. The lever member 30c is thereby pivoted about the movement axis of the lever member 30c and actuates the link member 26c. The link element 26c is moved in translation. Thus, the tension member 16c is moved to a guide unit insertion position by the tension member guide link 10c. Regarding further features of the Tool coupling device 10c may be referred to the description of Figures 1 to 6.

FIG. 13 shows a further, alternative tool coupling device 10d which is provided for receiving a machine tool separating device 12d designed as a closed system (FIG. 14) in a state disassembled by a portable machine tool (not shown here). The portable power tool has an analogous configuration to the portable power tool 38a described in FIGS. 1 to 6. The portable power tool and the power tool separator 12d together form a power tool system. The tool coupling device 10d has at least one cutting strand clamping unit 14d, which comprises at least one clamping element 16d, and at least one operating unit 20d comprising at least one operating element 18d. The operating element 18d is mounted so as to be pivotable about a movement axis 24d of the operating element 18d extending at least substantially parallel to a main extension plane of the operating element 18d or about an axis of motion 24d running at least substantially perpendicular to a rotation axis 68d of a drive element 62d of the tool coupling device 10d.

The cutting strand clamping unit 14d comprises at least one gear unit 22d which is provided to move the clamping element 16d as a result of an actuation of the operating element 18d of the operating unit 20d. The gear unit 22d has an analogous configuration to the gear unit 22a described in FIGS. 1 to 6. Furthermore, the tool coupling device

10 d at least one fixing unit 34 d, which comprises at least one fixing element 36 d, which is intended to fix the operating element 18 d in at least one position. The fixing element 36d is in this case designed as a wing nut. In addition, the fixing element 36d is rotatably and translationally mounted movably in a fixing recess 124d of the operating element 18d (FIG. 14).

The fixing element 36d acts to fix the operating element 18d to a threaded region 126d of the clamping element 16d. Upon movement of the operating element 18 d into a tool fixing position of the operating element 18 d, the fixing element 36 d and the threaded region 126 d of the clamping element 16 d are connected to one another. Due to the arrangement of the fixation elements 36d in the fixing recess 124d is a translational movement of the clamping element 16d together with the fixing element 36d possible. With regard to further features of the tool coupling device 10d, reference may be made to the description of FIGS. 1 to 6.

FIG. 15 shows a further alternative tool coupling device 10e, which is provided for receiving a machine tool separating device designed as a closed system (not shown here in detail) in a state disassembled by a portable machine tool (not shown here). The portable power tool has an analogous configuration to the portable power tool 38a described in FIGS. 1 to 6. The portable power tool and the power tool separating device together form a machine tool system. The tool coupling device 10e has at least one cutting strand clamping unit 14e, which comprises at least one clamping element 16e, and at least one at least

Operating element 18e comprehensive control unit 20e on. The operating element 18e is mounted so as to be pivotable about a movement axis 24e of the operating element 18e running at least substantially parallel to a main extension plane of the operating element 18e or about an axis of motion 24e of the tool coupling device 10e running at least substantially perpendicular to a rotation axis 68e of a drive element 62e.

Furthermore, the cutting strand clamping unit 14e comprises at least one gear unit 22e, which is provided to move the clamping element 16e as a result of an actuation of the operating element 18e of the operating unit 20e. The gear unit 22e has at least one link element 26e for a movement of the clamping element 16e as a result of an actuation of the operating element 18e. The link element 26e is rotatably mounted. Here, the link element 26e is rotatably supported in a base body 52e of the tool coupling device 10e. The link element 26e further has at least one clamping element guide slot 1 10e for a movement of the clamping element 16e as a result of an actuation of the operating element 18e. In addition, the gear unit 22e comprises at least one lever element 30e which, as a result of an actuation of the operating element 18e, moves the link element 26e of the gear unit 22e to a movement of the clamping element 16e. The lever element 30e is pivotable in this case mounted about a movement axis of the lever member 30e in the main body 52e. The movement axis of the lever element 30e in this case runs at least substantially parallel to the movement axis 24e of the operating element 18e. Furthermore, the gear unit 22e has a force introduction element 128e, which is mounted pivotably on the operating element 18e. In addition, the force introduction element 128e is pivotally connected to the lever element 30e by means of a hinge element 130e. The joint element 130e is in this case designed as a hinge pin, which in each case engages in a joint eye of the lever element 30e and of the force introduction element 128e.

Furthermore, the cutting strand clamping unit 14e comprises at least one spring element 28e, which is provided to act on the clamping element 16e and / or the gate element 26e of the gear unit 22e with a spring force. The spring element 28e is designed as a leg spring. Here, the spring element 28e is supported with one end on the main body 52e and with a further end, the spring element 28e is supported on the link element 26e. As a result of a movement of the operating element 18e into a tool fixing position of the operating element 18e in the direction of the main body 52e, the lever element 30e is actuated by means of the force introduction element 128e. As a result, the lever element 30e releases the link element 26e. The gate element 26e is moved by the spring force of the spring element 28e. As a result, the clamping element 16e is moved by means of the clamping element guide slot 10e in a clamping position of the clamping element 16e. With regard to further features of the tool coupling device 10e, reference may be made to the description of FIGS. 1 to 6.

FIG. 17 shows a further, alternative tool coupling device 10f, which is provided for receiving a machine tool separating device 12f (FIG. 18) designed as a closed system in a state disassembled by a portable machine tool (not shown here in detail). The portable power tool has an analogous configuration to the portable power tool 38a described in FIGS. 1 to 6. The portable power tool and the power tool separating device 12f together form a machine tool system. The tool coupling device 10 f has at least one cutting strand clamping unit 14 f, which at least one Clamping element 16f comprises, and at least one operating unit 20f comprising at least one operating element 18f. The operating element 18f is pivotably mounted about an axis of motion 24f of the operating element 18f running at least substantially parallel to a main extension plane of the operating element 18f or about an axis of motion 24f of the tool coupling device 10f running at least substantially perpendicular to a rotational axis 68f of a drive element 62f.

Furthermore, the cutting strand clamping unit 14f comprises at least one gear unit 22f, which is provided to move the clamping element 16f as a result of an actuation of the operating element 18f of the operating unit 20f. The gear unit 22f has at least one link element 26f to a movement of the clamping element 16f due to an actuation of the operating element 18f. The link element 26f is mounted translationally movable. Here, the link element 26f is guided in an axial bearing recess 120f of a main body 52f of the tool coupling device 10f (FIG. 18). The link element 26f comprises a clamping element guide link 1 10f for a movement of the clamping element 16f. The clamping element guide slot 1 10f has an at least substantially transversely to a movement axis of the link element 26f extending course. Thus, the clamping element guide link 1 10f is inclined relative to the axis of movement of the link element 26f.

Furthermore, the gear unit 22f comprises at least one lever element 30f which, as a result of an actuation of the operating element 18f, moves the link element 26f of the gear unit 22f to move the clamping element 16f. The lever element 30f is rotatably mounted about a movement axis of the lever element 30f running in the main body 52f at least substantially parallel to the axis of rotation 68f of the drive element 62f. For a movement of the link element 26f, the lever element 30f bears against the link element 26f with one end. In addition, the lever member 30f has a

Operating control area 132f, which cooperates with the operating element 18f. Furthermore, the cutting strand clamping unit 14f comprises at least one spring element 28f, which is provided to act on the clamping element 16f and / or the gate element 26f of the gear unit 22f with a spring force. The spring element 28f is designed as a helical compression spring. Here- at the spring element 28f is supported with one end on the base body 52f and with a further end, the spring element 28f is supported on the link element 26f. The spring element 28f is arranged in the axial bearing recess 120f of the main body 52f. With regard to further features of the tool coupling device 10f, reference may be made to the description of FIGS. 1 to 6.

FIG. 19 shows another alternative tool coupling device 10g provided for receiving a closed machine tool cutting device 12g in one of a portable one

Machine tool (not shown here) disassembled state. The portable power tool has an analogous configuration to the portable power tool 38a described in FIGS. 1 to 6. The portable machine tool and the machine tool separating device 12g together form a machine tool system. The tool coupling device

10g has an at least substantially analogous configuration to the tool coupling device 10f described in FIGS. 17 and 18. In contrast to the tool coupling device 10f, a cutting strand clamping unit 14g of the tool coupling device 10g has a spring element 28g designed as a leg spring. In addition, the tool coupling device 10g has at least one fixing unit 34g, which comprises at least one fixing element 36g, which is provided to fix the operating element 18g in at least one position. The fixing element 36g is pivotally mounted in a base body 52g of the tool coupling device 10g (FIG. 21). The fixing unit 34g also has a fixing spring element 134g, which is provided to apply a spring force to the fixing element 36g (FIGS. 20 and 21). The fixing element 36g is thus designed as a spring-biased latching hook which cooperates to fix the operating element 18g in a tool fixing position with a fixing extension 136g arranged in the operating element 18g (FIG. 21). The fixing extension 136g is in this case formed integrally with the operating element 18g.

FIGS. 22 to 31 show alternative holding units of a tool coupling device, which are provided to act on a clamping force in the direction of a main body of the tool coupling device. In the way Substantially constant components, features and functions are numbered in principle with the same reference numerals. To distinguish the embodiments, the reference numerals of the embodiments added in addition to the letters superscript numbers. The following description is essentially limited to the differences from the first exemplary embodiment in FIGS. 1 to 6, wherein reference can be made to the description of the first exemplary embodiment in FIGS. 1 to 6 with regard to components, features and functions remaining the same.

FIG. 22 shows a holding unit of a tool coupling device 10a ¹ . The holding unit has at least one screw element which cooperates to produce a clamping force or holding force in the direction of a main body 52a ^{1 of} the tool coupling device 10a ¹ with a threaded recess arranged on the main body 52a ¹ (not shown here in detail).

FIG. 23 shows an alternative holding unit of a tool coupling device 10a ² . The holding unit has at least two hooking elements oriented in oppositely directed directions, which can be inserted into recesses of a machine tool separating device 12a ² in the direction of a base body 52a ^{1 of} the tool coupling device 10a ¹ in the direction of a base body 52a ¹ , and after insertion as a result of a spring force in to be moved in opposite directions.

FIG. 24 shows an alternative holding unit of a tool coupling device 10a ³ . The holding unit has at least one stirrup element which delimits a recess into which a power-tool parting device 12a ^{3 can be} inserted at least substantially perpendicularly to an acting holding force.

FIG. 25 shows an alternative holding unit of a tool coupling device 10a ⁴ . The holding unit has at least one toggle unit, which is provided for generating a clamping force or holding force in the direction of a base body 52a ^{4 of} the tool coupling device 10a ⁴ .

FIG. 26 shows an alternative holding unit of a tool coupling device 10a ⁵ . The holding unit has at least one spring-loaded latching hook, the to produce a clamping force or holding force in the direction of a base body 52a ^{5 of} the tool coupling device 10a ⁵ with a recess of a machine tool separating device 12a ⁵ cooperates.

FIG. 27 shows an alternative holding unit of a tool coupling device 10a ⁶ . The holding unit has at least one transverse sliding element which, after introduction of a power-tool parting device 12a ⁶ into a receiving recess 78a ^{6 of} a main body 52a ^{6 of} the tool coupling device 10a ⁶ at least substantially transversely to an insertion direction of the power-tool parting device 12a ⁶ on the machine tool separating device 12a ⁶ slidably is stored.

FIG. 28 shows an alternative holding unit of a tool coupling device 10a ⁷ . The holding unit has at least one bayonet locking element, which cooperates to generate a clamping force or holding force in the direction of a main body 52a ^{7 of} the tool coupling device 10a ⁷ with a bayonet locking element of a machine tool separating device 12a ⁷ .

FIG. 29 shows an alternative holding unit of a tool coupling device 10a ⁸ . The holding unit has at least one holding lug, which leads to a generation of a clamping force or holding force in the direction of a base body 52a ^{8 of} the tool coupling device 10a ⁸ with at least one

Holding tab engaging projection cover element of the holding unit interacts.

FIG. 30 shows an alternative holding unit of a tool coupling device 10a ⁹ . The holding unit has at least one C-shaped form-locking holding element into which a machine tool separating device 12a ^{9 can be} inserted.

FIG. 31 shows an alternative holding unit of a tool coupling device 10a ¹⁰ . The holding unit has at least one eccentric element, which cooperates to produce a clamping force or holding force in the direction of a main body 52a ^{10 of} the tool coupling device 10a ¹⁰ with a circular recess of a machine tool separating device 12a ¹⁰ . In Figures 32 to 35 are alternative

Machine tool separator torque holding units of a tool coupling device, which are provided to secure the machine tool separating device in a coupled to the tool coupling device state of the machine tool cutting device against rotational movement. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, the reference numerals of the embodiments added in addition to the letters superscript numbers. The following description is essentially limited to the differences from the first exemplary embodiment in FIGS. 1 to 6, wherein reference can be made to the description of the first exemplary embodiment in FIGS. 1 to 6 with regard to components, features and functions remaining the same.

Figure 32 shows an alternative

Machine tool separator torque holding unit of a tool coupling device 10a ¹¹ . The

The machine tool separator torque holding unit has at least two bolt-shaped torque holding elements, which can be inserted into corresponding recesses of a power tool separating device 12a ¹¹ . However, it is also conceivable that the

Werkzeugmaschinentrennrichtungsdrehmomenthalteeinheit has at least two circular recesses, in each of which a bolt-shaped torque-holding element of the power-tool parting device 12a ^{11 is} insertable.

Figure 33 shows another, alternative

Machine tool separator torque holding unit of a tool coupling device 10a ¹² . The

The power tool separator torque holding unit has at least one rectangular torque holding extension which can be inserted into at least one rectangular cutout of a power tool separating device 12a ¹² . However, it is also conceivable that the

Machine tool separator torque holding unit at least one has rechteckformige recess into the rectangular-shaped torque-holding element of the power tool separating device 12a ^{12 is} inserted.

Figure 34 shows another, alternative

Machine tool separator torque holding unit of a tool coupling device 10a ¹³ . The

Machine tool parting device torque retaining unit has at least one toothing (external toothing, internal toothing or end face toothing), which interacts with a corresponding toothing of a machine tool separating device 12a ¹³ .

Figure 35 shows another, alternative

Machine tool separator torque holding unit of a tool coupling device 10a ¹⁴ . The

Machine tool parting device torque retaining unit has at least one multiplicity of form-locking elements arranged symmetrically about a rotation axis 68a ^{14 of} a drive element 62a ^14, which interact with symmetrically arranged form-fit elements of a power-tool parting device 12a ¹⁴ .

Claims

Expectations

1 . Tool coupling device for a holder of a machine tool cutting device designed as a closed system, with at least one cutting strand clamping unit (14a; 14b; 14c; 14d; 14e; 14f; 14g), which has at least one clamping element (16a; 16b; 16c; 16d; 16e; 16f; 16g) and with at least one operating unit (20a; 20b; 20c; 20d; 20e; 20f; 20g) comprising at least one operating element (18a; 18b; 18c; 18d; 18e; 18f; 18g), characterized in that the cutting strand tensioning unit (14a ; 14b; 14c; 14d; 14e; 14f; 14g) comprises at least one gear unit (22a; 22b; 22c; 22d; 22e; 22f; 22g), which is intended to hold the clamping element (16a; 16b; 16c; 16d; 16e ; 16f; 16g) as a result of an actuation of the control element (18a; 18b; 18c; 18d; 18e; 18f; 18g) of the control unit (20a; 20b; 20c; 20d; 20e; 20f; 20g).

2. Tool coupling device according to claim 1, characterized in that the operating element (18a; 18c; 18d; 18e; 18f; 18g) is pivotable about an at least substantially parallel to a main extension plane of the operating element (18a; 18c; 18d; 18e; 18f; 18g ) running axis of movement (24a; 24c; 24d; 24e; 24f; 24g) of the control element (18a; 18c; 18d; 18e; 18f; 18g) is mounted.

3. Tool coupling device according to at least claim 1, characterized in that the operating element (18b) is rotatably mounted about a movement axis (24b) of the operating element (18b) which runs at least substantially perpendicular to a main extension plane of the operating element (18b).

4. Tool coupling device according to one of the preceding claims, characterized in that the clamping element (16a; 16b; 16c; 16d; 16e; 16f; 16g) is mounted in a translationally movable manner.

Tool coupling device according to one of the preceding claims, characterized in that the gear unit (22b; 22c; 22e; 22f; 22g) has at least one link element (26b; 26c; 26e; 26f; 26g) for a movement of the clamping element (16b; 16c; 16e; 16f; 16g) as a result of an actuation of the control element (18b; 18c; 18e; 18f; 18g).

Tool coupling device according to claim 5, characterized in that the link element (26c; 26f; 26g) is mounted in a translationally movable manner.

Tool coupling device at least according to claim 5, characterized in that the link element (26b; 26e) is rotatably mounted.

Tool coupling device according to one of the preceding claims, characterized in that the cutting strand tensioning unit (14a; 14b; 14c; 14d; 14e; 14f; 14g) comprises at least one spring element (28a; 28b, 108b; 28c; 28d; 28e; 28f; 28g), which is intended to be the clamping element (16a; 16b; 16c; 16d; 16e; 16f; 16g) and/or a link element (26b; 26c; 26e; 26f; 26g) of the gear unit (22b; 22c; 22e; 22f; 22g). ) to apply a spring force.

Tool coupling device according to one of the preceding claims, characterized in that the gear unit (22c; 22e; 22f; 22g) comprises at least one lever element (30c; 30e; 30f; 30g) which, as a result of an actuation of the operating element (18c; 18e; 18f; 18g ) a link element (26c; 26e; 26f; 26g) of the gear unit (22c; 22e; 22f; 22g) moves to move the clamping element (16c; 16e; 16f; 16g).

0. Tool coupling device according to one of the preceding claims, characterized in that the gear unit (22a; 22d) comprises at least one eccentric element (32a; 32d) which causes the clamping element (16a; 16d) to move as a result of an actuation of the operating element (18a; 18d). ) interacts with the clamping element (16a; 16d).

1 1 . Tool coupling device according to one of the preceding claims, characterized by at least one fixing unit (34a; 34c; 34d; 34e; 34f; 34g), which comprises at least one fixing element (36a; 36c; 36d; 36e; 36f; 36g) intended for this purpose is to fix the control element (18a; 18c; 18d; 18e; 18f; 18g) in at least one position.

12. Tool coupling device according to claim 1 1, characterized in that the fixing element (36a; 36c; 36d; 36e; 36f; 36g) is pivotally mounted.

13. Portable machine tool with a tool coupling device according to one of claims 1 to 12.

14. Machine tool system with at least one portable machine tool according to claim 13 and with at least one machine tool separating device (12a; 12b; 12c; 12d; 12f; 12g), which has at least one

Cutting strand (40a; 40b; 40c; 40d; 40f; 40g) and at least one guide unit (42a; 42b; 42c; 42d; 42f; 42g), which together with the cutting strand (40a; 40b; 40c; 40d; 40f; 40g ) forms a closed system.