EP4197695A1 - Hand-held power tool device with torque nut device and method - Google Patents

Abstract

The invention is based on a torque socket device with a fastener receptacle (12a; 12b; 12c), a tool receptacle (16a; 16b; 16c) and a torque clutch (20a; 20b; 20c) via which the fastener receptacle (12a; 12b; 12c) and the tool holder (16a; 16b; 16c) are coupled to one another, the torque coupling (20a; 20b; 20c) being provided for the fastening element holder (12a; 12b; 12c) and the tool holder (16a; 16b; 16c) when a limit torque is reached at least to partially decouple from each other.It is proposed that an identification unit (26a; 26b; 26c) which is provided at least for digital communication of at least one torque socket device parameter.

Description

State of the art

A torque socket device with a tool holder, a fastener holder and a torque coupling, via which the tool holder and the fastener holder are coupled to one another, has already been proposed, with the torque coupling being provided to at least partially decouple the tool holder and the fastener holder from one another when a limit torque is reached .

Disclosure of Invention

The invention is based on a torque socket device with a tool holder, a fastener holder and a torque coupling, via which the tool holder and the fastener holder are coupled to one another, the torque coupling being provided for at least partially decoupling the tool holder and the fastener holder from one another when a limit torque is reached.

It is proposed that the torque socket device has an identification unit which is provided at least for digital communication of at least one torque socket device parameter. Under A “handheld power tool device” should be understood to mean at least part of a handheld power tool, preferably the entire handheld power tool. In this context, a “handheld power tool” should be understood to mean a machine that processes a workpiece, but advantageously a cordless screwdriver, a drill, a rotary and/or percussion hammer, an electric screwdriver, a screwdriver and/or a multifunction tool. The hand tool is electrically driven.

A “tool holder” should be understood to mean a holder that is intended to be connected to a hand-held power tool in order to transmit torque to the torque socket device. The tool holder is designed as a force and/or form-fitting element. The tool holder preferably has a pin with an outer contour, preferably an outer square. A “fastening element receptacle” should preferably be understood to mean a receptacle for a tool, such as a bit attachment, or a drill, in which the tool can be connected in a form-fitting and/or non-positive manner. The fastening element receptacle is preferably formed by a form-fitting element. The fastener receptacle is preferably formed by a receiving hole with a contour. The fastening element receptacle is preferably formed by a receiving hole with a hexagon socket. In principle, it is also conceivable for the fastening element receptacle to have a different contour, via which a tool can be arranged in the fastening element receptacle in a rotationally fixed manner. A "torque clutch" should preferably be understood to mean a clutch with an input side and an output side which are connected to one another in a torque-proof manner up to a limit torque and can be rotated relative to one another when an acting torque exceeds the limit torque. The limit torque can be permanently set and not changeable or can be changed by a user. A "limit torque" should preferably be understood to mean a torque that can just about be transmitted by the torque coupling, in particular between the input side and the output side of the torque coupling. If a torque that is greater than the limit torque acts between the input side and the output side of the torque coupling, the input side and the output side can be rotated in relation to one another. The limit torque is preferably that which triggers the torque clutch torque. The set limit torque can be transmitted from the input side to the output side of the torque clutch at most, preferably precisely. "At least partially decoupled from one another" should preferably be understood to mean that the input side and the output side of the torque clutch are rotationally decoupled from one another, ie can rotate relative to one another. With the partial decoupling, the input side and the output side of the torque coupling are preferably still fixed to one another in an axial direction. An "identification unit" should preferably be understood to mean a unit which is provided for displaying or outputting at least one parameter, in particular the torque socket device parameter, in a digitally readable manner. A "digital communication provided" should preferably be understood to mean that a digitally readable signal is provided, or a signal is output digitally, for example in the form of a radio signal, which can be digitally recorded and evaluated. A digitally readable signal can be in the form of an optical signal, for example, which can be captured by a camera unit, for example. A "torque socket device parameter" should preferably be understood as a parameter of the torque socket, such as in particular a limit torque of the torque coupling, a tolerance of the limit torque, a parameter for the drive with which the torque socket device is driven, or other parameters that reflect a property of the torque socket.

Due to the configuration of the torque socket device according to the invention, a simple, inexpensive device that can be retrofitted can be provided in a particularly advantageous manner, by means of which the torques with which the connecting means are tightened can be easily called up and documented. Screwing operations, in particular torque screwing operations, which have to be carried out with a defined torque, can be particularly advantageously documented and logged in a particularly simple manner.

It is further proposed that the identification unit includes a communication module that is provided to output the at least one torque socket device parameter as a digital signal. A "communications module" should preferably be understood to mean a module that comprises at least one transmission unit which is intended to emit a radio signal. The communication module can be embodied as an active module that includes a computing unit and an active transmission unit that actively emits a radio signal. In principle, it is also conceivable for the communication module to be in the form of an externally supplied electronic communication module, such as an RFID module or an NFC module. The communication module is preferably designed as an RFID module, which emits a corresponding radio signal after electromagnetic excitation. As a result, the identification unit can be designed particularly advantageously for a simple digital readout of a torque socket device parameter.

It is also proposed that the digital signal output by the communication module is in the form of a radio wave. As a result, the digital signal can be configured to be particularly easy to transmit and read.

It is further proposed that the torque socket device has at least one optical wear indicator unit which is provided at least for detecting and/or outputting a wear parameter of the torque clutch. A “wear indicator unit” should preferably be understood to mean a unit that optically indicates to a user wear of the torque socket or of the entire torque socket device. The wear indicator unit can be designed, for example, as a field with an abrasive paint, or as a container with a viewing window in which a liquid that darkens over time is arranged. A "wear parameter of the torque clutch" should preferably be understood as a parameter that reflects a validity or a tolerance of the torque value of the torque clutch. As a result, a user can advantageously easily and quickly recognize a validity of a torque value of the torque coupling or another wear parameter of the torque socket device.

Furthermore, it is proposed that a limit torque of the torque clutch can be set and the identification unit has at least one sensor element that detects the set limit torque. Under a "Sensor element" should preferably be understood to mean an element which, as a function of a set limit torque, provides an optical, electrical or electronic signal which correlates with this limit torque. The signal provided by the sensor element can be evaluated accordingly by a computing unit and the set limit torque can be determined. As a result, a torque socket device with an adjustable limit torque can be provided in a particularly advantageous manner, which can output the set limit torque as a torque socket device parameter.

Furthermore, a system consisting of an external unit and a torque socket device is proposed, the external unit having a communication and evaluation device which is intended to receive and evaluate the torque socket device parameter provided by the identification unit of the torque socket device. An "external unit" should preferably be understood to mean a hand-held power tool device or a separate external unit, such as an electronic device. A “handheld power tool device” should preferably be understood to mean a handheld power tool itself or an accessory device, such as an additional handle that can be attached to the power tool. A hand-held power tool is designed as an electric hand-held power tool. An auxiliary handle can preferably be attached to a handheld power tool, for example in a front area of the handheld power tool, and includes at least one gripping area and can in particular include additional components such as lighting and/or sensors, such as a camera unit. An “electronic device” should be understood to mean a device that is provided for controlling and/or monitoring the hand-held power tool. For example, an electronic device can be embodied as a smartphone, a tablet or another computer. A "communication and evaluation device" should preferably be understood to mean a device which has at least one computing unit and one communication unit. The communication unit preferably has a transmitting and receiving unit that is at least provision is made to receive at least the digital signal provided by the identification unit of the torque socket device and to forward it to the computing unit. The arithmetic unit is preferably provided to evaluate the received signal. As a result, an advantageous system can be provided with which torque socket device parameters of torque screw connections are advantageously recorded and stored.

In addition, it is proposed that the communication and evaluation device is provided to store at least one torque socket device parameter and one process parameter of a screw connection. A "process parameter of a screwing" should preferably be understood as a parameter that reflects a property of a screwing, such as preferably a time of the screwing, a user who performs the screwing, and possibly other environmental parameters that could have an impact on the screwing. A particularly advantageous documentation of a screw connection can thereby be provided.

In addition, it is proposed that the machine tool device comprises a camera unit, which is provided to record a torque socket device parameter that can be optically read out by the identification unit. A “camera unit” should preferably be understood to mean a unit with at least one camera that is provided for optically capturing a detection area and outputting a corresponding electronic output signal. As a result, the machine tool device can be designed in a particularly simple manner for reading out an optically readable parameter.

A method for a system is also proposed, wherein in at least one method step a torque socket device parameter provided by an identification unit and/or a process parameter of a screw connection is processed and stored. As a result, a particularly advantageous method for tightening connecting means can be provided, in which the parameters of the screw connection can be easily recognized and documented.

In addition, it is proposed that in at least one further method step, at least one hand-held power tool parameter for a screw connection is evaluated and stored. A "handheld power tool parameter" should preferably be understood as a parameter of an external unit designed as a handheld power tool, which reflects at least one property of the handheld power tool with which a screwing was performed, such as an ID of the handheld power tool, a speed at which a screwing was performed. As a result, a method can be provided with which screwing operations can be documented in a particularly advantageous manner.

The torque socket device according to the invention should not be limited to the application and embodiment described above. In particular, the torque socket device according to the invention can have a number of individual elements, components and units as well as method steps that differs from the number specified here in order to fulfill a function described herein. In addition, in the value ranges specified in this disclosure, values lying within the specified limits should also be considered disclosed and can be used as desired.

drawings

Further advantages result from the following description of the drawing. Three exemplary embodiments of the invention are shown in the drawing. 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 further meaningful combinations.

Fig. 1

ein erfindungsgemäßes System mit einer Drehmomentstecknussvorrichtung und einer als Smartphone ausgebildeten externen Einheit in einem ersten Ausführungsbeispiel,

Fig. 2

eine erfindungsgemäße Drehmomentstecknussvorrichtung in einem zweiten Ausführungsbeispiel,

Fig. 3

ein erfindungsgemäßes System mit einer Drehmomentstecknussvorrichtung und einer als Handwerkzeugmaschinenvorrichtung ausgebildeten externen Einheit in einem zweiten Ausführungsbeispiel,

Fig. 4

ein Ablaufdiagramm für ein Verfahren für das System mit der Drehmomentstecknussvorrichtung und dem als Handwerkzeugmaschinenvorrichtung ausgebildeten externen Gerät,

Fig. 5

ein erfindungsgemäßes System mit einer Drehmomentstecknussvorrichtung und einer als Handwerkzeugmaschinenvorrichtung ausgebildeten externen Einheit in einem dritten Ausführungsbeispiel und

Fig. 6

ein Ablaufdiagramm für ein Verfahren für das System mit der Drehmomentstecknussvorrichtung und dem als Handwerkzeugmaschinenvorrichtung ausgebildeten externen Gerät.

Show it:

1

a system according to the invention with a torque socket device and an external unit designed as a smartphone in a first exemplary embodiment,

2

a torque socket device according to the invention in a second embodiment,

3

a system according to the invention with a torque socket device and an external unit designed as a hand-held power tool device in a second exemplary embodiment,

4

a flowchart for a method for the system with the torque socket device and the external device designed as a hand-held power tool device,

figure 5

a system according to the invention with a torque socket device and an external unit designed as a hand-held power tool device in a third exemplary embodiment and

6

a flowchart for a method for the system with the torque socket device and the external device designed as a hand-held power tool device.

Description of the exemplary embodiments

The figure 1 shows a first exemplary embodiment of a torque socket device 10a according to the invention. The torque socket device 10a is designed as a torque slip socket. The torque socket device 10a includes a fastener receptacle 12a. The fastener receptacle 12a is provided so that a tool 14a can be fixed therein. A tool 14a can be designed, for example, as a nut or bit attachment with a screw head profile. The screw head profile can be embodied as desired, for example as a hexagon, a torx, a Phillips head, or any other common shape. The fastener receptacle 12a is located at a front axial end of the torque socket device 10a. The fastener receptacle 12a forms a first end of the torque socket device 10a. The fastener receptacle 12a is designed as a recess. The fastening element receptacle 12a designed as a recess is designed as a hexagon socket. In principle, it would also be conceivable for the fastening element receptacle 12a, which is designed as a recess, to have a different Has inner contour. The fastener receptacle 12a forms a form-fitting element in which the tool 14a can be arranged in a rotationally fixed manner. The torque socket device 10a has a tool holder 16a. The tool holder 16a is intended to be connected to a hand tool or a hand tool. The tool holder 16a is designed as a force and form-fitting element. The tool holder 16a has a pin 18a with an outer contour. The pin 18a has an external square. At least the pin 18a is intended to be connected in a clamping device of a hand-held power tool. The tool holder 16a is arranged at a rear axial end of the torque socket device 10a. The tool holder 16a forms a rear end of the torque socket device 10a.

The torque socket device 10a has a torque coupling 20a. The torque coupling 20a is arranged between the fastener receptacle 12a and the tool receptacle 16a. The torque coupling 20a is intended to couple the fastening element receptacle 12a and the tool receptacle 16a to one another in a rotationally fixed manner in at least one operating state and to mount them so that they can rotate with respect to one another in a second operating state. The torque coupling 20a is provided for at least partially decoupling the fastening element receptacle 12a and the tool receptacle 16a from one another when a limit torque is reached. The limit torque is in the form of a torque that can just about be transmitted by the torque clutch 20a.

Torque clutch 20a has an input side 22a. The input side 22a faces the axially rearward end of the torque socket device 10a. The input side 22a is firmly connected to the tool holder 16a. The torque coupling 20a has an output side 24a. The output side 24a of the torque coupling 20a faces the axially front end of the torque socket device 10a. The output side 24a of the torque coupling 20a is firmly connected to the fastener receptacle 12a.

The torque clutch 20a has a clutch mechanism, not shown in detail, via which the input side 22a and the output side 24a are connected to one another. The clutch mechanism is designed like a clutch mechanism of a torque clutch 20a known from the prior art. For example, the input side 22a and the output side 24a can each have face teeth that mesh with one another, with the input side 22a and the output side 24a being able to be pressed against one another via a spring element. A torque acting between the input side 22a and the output side 24a can be transmitted up to a limit torque. Until torque between the input side 22a and the output side 24a reaches the limit torque, torque will be transmitted between the face gears of the input side 22a and the output side 24a. If the torque between the input side 22a and the output side 24a exceeds the limit torque, an axial force induced by the inclined surfaces of the spur gear teeth becomes greater than an axial spring force provided by the spring element, which presses the input side 22a and the output side 24a against one another, and the spur gear teeth of the input side 22a and 22a of the output side 24a can be detached from one another and rotated towards one another. In principle, it is also conceivable that the clutch mechanism is designed in a different way, and is formed, for example, by a spring-loaded friction clutch, which has a friction surface on the input side 22a and the output side 24a of the torque clutch 20a, which are pressed against one another by a spring force.

The torque socket device 10a has an identification unit 26a. The identification unit 26a is provided for digital communication of at least one torque socket device parameter. A torque socket device parameter provided from the identification unit 26a to digital communication is formed as the limit torque of the torque coupling 20a. Another torque socket device parameter is configured as a tolerance of the limit torque. In principle, it is conceivable that further torque socket device parameters are provided for digital communication by means of the identification unit 26a. About the identification unit 26a for a digital communication provided torque socket device parameters are read out digitally. The identification unit 26a has an optical identification element 28a. The optical identification element 28a is designed as a QR code. In principle, it would also be conceivable for the optical identification element 28a to be designed as a bar code, a data matrix code (DMC), a color code, or as another optical code that appears sensible to a person skilled in the art. The torque socket device parameters are stored in the optical identification element 28a. The torque socket device parameters can be read out from the optical identification element 28a using a corresponding readout device.

The torque socket device 10a has an optical wear indicator unit 30a. The optical wear indicator unit 30a is provided for detecting a wear parameter of the torque clutch 20a. Specifically, a wear parameter is output as a parameter representing a frequency of use of the torque socket device 10a. Based on the frequency with which the torque socket device 10a is used, a conclusion can be drawn as to an assumed wear on the torque socket device 10a and thus to a possibly changing tolerance of the limit torque of the torque clutch 20a. The wear indicator unit 30a has a mechanical wear indicator element 32a. The mechanical wear indicator element 32a is designed as a color field with color that rubs off in the course of use. As a result, based on abrasion of a color of the color field, a conclusion can be drawn as to how often the torque socket device 10a has been used and how a corresponding wear is developed.

The figure 1 also shows a system according to the invention from an external unit 34a and the torque socket device 10a. The external unit 34a is designed as an electronic device. The external unit 34a is designed in particular as a smartphone. In principle, it would also be conceivable for the external unit 34a to be designed as a tablet computer or as another electronic device with a computing unit. The external unit 34a designed as a smartphone has a communication and evaluation device 44a, which is intended to receive, evaluate and/or store the torque socket device parameters provided by the identification unit 26a of the torque socket device 10a. An operating program can preferably be executed on the external unit 34a designed as a smartphone, by means of which torque screwings can be digitally logged. The external unit 34a designed as a smartphone has a camera unit. The camera unit of the external unit 34a is part of the communication and evaluation device 44a. The identification element 28a can be detected by means of the camera unit. A digital image of the optical identification element 28a of the identification unit 26a captured by the camera unit is preferably evaluated by the operating program. The operating program is intended to read out the torque socket device parameters stored in the optical identification element 28a. The torque socket device parameters read out can be stored in a corresponding database.

In a method according to the invention for a system with a torque socket device of an external unit 34a designed as a smartphone, the optical identification element 28a of the identification unit 26a of the torque socket device is photographed in a first method step using the camera unit of the external unit 34a. In the first method step, the captured image of the optical identification element 28a is evaluated by the operating program on the external unit 34a. The torque socket device parameters stored in the optical identification element 28a are read out by the operating program in the first method step. The determined torque socket device parameters are preferably temporarily stored in the operating program. If a screw connection is carried out using the torque socket device 10a in combination with a hand-held power tool, in a further method step the torque socket device parameters determined in the previous method step are assigned to the corresponding screw connection and stored in the database. In the further method step, preferably further process parameters of this screwing are correspondingly stored in the database. The additional process parameters, such as an ID of the screwing or a user ID, can be entered manually, for example are input to the external unit 34a. In principle, it would also be conceivable that an image of the screwing captured by the camera unit is also stored in the database in association with the corresponding screwing. Preferably, it is also conceivable that the external unit is provided to forward the process parameters and torque socket device parameters recorded for a screw connection to a further data recording unit or to store them in a cloud, for example.

In the Figures 2 to 6 two further exemplary embodiments of the invention are shown. The following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with regard to components having the same designation, in particular with regard to components having the same reference symbols, also to the drawings and/or the description of the other exemplary embodiments, in particular the figure 1 , can be referenced. To distinguish between the exemplary embodiments, the letter a is the reference number of the exemplary embodiment in FIG figure 1 adjusted. In the embodiments of Figures 2 to 6 the letter a is replaced by the letters b and c.

In the Figures 2 to 4 a second embodiment of the invention is shown. The figure 2 shows a system according to the invention from a torque socket device 10b according to the invention and an external unit 34b. The torque socket device 10b is designed as a torque slip socket. The torque socket assembly includes a fastener receptacle 12b. The fastening element receptacle 12b is provided so that a tool can be fixed therein. The fastener receptacle 12b is located at a front axial end of the torque socket device 10b. The torque socket device 10b has a tool holder 16b. The tool holder 16b is intended to be connected to a hand tool or a hand tool. The tool holder 16b is designed as a force and form-fitting element. The tool holder 16b is arranged at a rear axial end of the torque socket device 10b.

The torque socket device 10b has a torque coupling 20b. The torque coupling 20b is arranged between the fastener receptacle 12b and the tool receptacle 16b. The torque coupling 20b is provided for at least partially decoupling the fastening element receptacle 12b and the tool receptacle 16b from one another when a limit torque is reached. The torque coupling 20b has an input side 22b that faces the axially rearward end of the torque socket device 10b. The torque coupling 20b has an output side 24b facing the axially forward end of the torque socket 10b. Torque clutch 20b has a clutch mechanism, not shown in detail, via which input side 22b and output side 24b are connected to one another. In contrast to the previous exemplary embodiment, the torque clutch 20b has an adjustment device 36b. The setting device 36b is provided to set the limit torque of the torque clutch 20b. The setting device 36b is provided for adjusting the limit torque in areas that are typical for work. The adjusting device 36b is preferably provided for adjusting the limit torque by adjusting a contact pressure between the input side 22b and the output side 24b of the torque clutch 20b. The setting device 36b can preferably be operated by a user directly on the torque coupling. Adjusting device 36b is preferably adjusted relative to one another by rotating input side 22b and output side 24b of torque clutch 20b, as a result of which a spring force can be changed. The setting device 36b preferably has an optical display area 42b with a scale, from which a user can read off the set limit torque directly.

The torque socket device 10b has an identification unit 26b. The identification unit 26b is provided for digital communication of at least one torque socket device parameter. A torque socket device parameter provided from the identification unit 26b to digital communication is formed as the limit torque of the torque coupling 20b. Another torque socket device parameter is configured as a tolerance of the limit torque.

The limit torque of the torque clutch 20b can be set by the setting device 36b. The identification unit 26b has a sensor element 38b which detects the set limit torque. Sensor element 38b is provided for detecting the limit torque of torque clutch 20b set by means of setting device 36b. Sensor element 38b outputs a corresponding sensor signal as a function of the set limit torque of torque clutch 20b. In principle, it would also be conceivable that an adjustment of the limit torque by means of the adjustment device 36b merely triggers an optical effect or a mechanical change in shape, from which a conclusion can be drawn as to the limit torque set. The sensor element 38b can be embodied, for example, as a rotary sensor which detects a twisting of the input side 22b and the output side 24b of the torque clutch 20b in order to determine the set limit torque.

In contrast to the first exemplary embodiment, the identification unit 26b comprises a communication module 40b. The communication module 40b is provided to output at least one torque socket device parameter as a digital signal. The digital signal output from the communication module 40b is formed as a radio wave. The communication module 40b includes a transmission unit 46b. The transmission unit 46b is in the form of a Bluetooth transmission unit. The transmission unit 46b is intended to output a digital signal in the form of a radio signal. The transmission unit 46b is provided for the purpose of transmitting at least the torque socket device parameter designed as the limit torque digitally by radio signal. The limit torque currently set by means of the setting device 36b is preferably transmitted digitally by radio signal as a torque socket device parameter via the transmission unit 46b. Transmitting unit 46b preferably transmits the sensor signal which is output by sensor element 38b and depends on the set limit torque of torque clutch 20b. The communication module 40b is designed as an active electronic module. The communication module 36b preferably has a computing unit (not shown in detail), for example in the form of a chip, and a power supply. The power supply supplies the transmitter unit 46b and the computing unit. The arithmetic unit is preferably provided to evaluate the sensor signal of the sensor element 38b and to control the transmission unit 46b. In principle, it would also be conceivable for the communication module 40b to be in the form of an externally supplied communication module, such as an RFID module, for example.

The external unit 34b is in the form of a hand-held power tool. The external unit 34b is embodied here as a cordless screwdriver, for example. In principle, it is also conceivable for the external unit 34b to be in the form of another handheld power tool, by means of which a torque socket device 10b can be used correctly. The external unit 34b has a communication and evaluation device 44b. The communication and evaluation device 44b is intended to receive, evaluate and/or store the torque socket device parameters provided by the identification unit 26b of the torque socket device 10b. The communication and evaluation device 44b is intended to receive the digital signal output by the communication module 40b, in particular the transmission unit 46b. The communication and evaluation device 44b has a transmitting and receiving unit that is not shown in detail. The transmitting and receiving unit is provided to receive the signal emitted by the transmitting unit 46b of the communication module 40b of the torque socket device 10b. The transmitting and receiving unit is designed as a Bluetooth unit. The communication and evaluation device 44b has a computing unit that is not shown in detail. The arithmetic unit evaluates at least the signals received from the transmitting and receiving unit, in particular the parameters of the torque socket device. Furthermore, the communication and evaluation device 44b can evaluate and store further process parameters of a screwing. For example, in the case of a screw connection, additional process parameters such as the time of the screw connection, a tool used, or process data from the external unit 34b designed as a hand-held power tool, such as in particular a speed, can be evaluated and stored. In order to log further process parameters, it can also be provided that the communication and evaluation device 44b also evaluates further sensors of the external unit 34b designed as a hand-held power tool, such as, for example a vibration sensor, a sound sensor, an acceleration sensor, a motion sensor. Furthermore, the communication and evaluation device 44b is provided to also evaluate operating parameters of the external unit 34b designed as a hand-held power tool, such as in particular a voltage, a current or user inputs. For example, the communication and evaluation device 44b could also be provided to calculate a wear value for assessing the validity of a torque that is provided by the external unit 34b designed as a hand-held power tool. The communication and evaluation device 44b is preferably provided to store the recorded and calculated process parameters and the torque socket device parameters for a screw connection in a database. The communication and evaluation device 44b is preferably provided to send the recorded and calculated process parameters and the torque socket device parameters for a screw connection to a further external memory or a computing unit. In this way, process logs can advantageously be stored on external storage media or, for example, in a cloud.

A method according to the invention with a torque socket device 10b according to the invention and the external unit 34b designed as a hand-held power tool will be described below by way of example. In particular, a method of screwing, ie torque screwing, using the torque socket device 10b is to be described, in which a connecting means, such as a screw, is tightened with a defined torque.

In a first method step 48b, a user connects the torque socket device 10b to the external unit 34b designed as a hand-held power tool. The external unit 34b reads the identification unit 26b of the torque socket device 10b via the communication and evaluation device 44b. The communication and evaluation device 44b determines the torque socket device parameters of the torque socket device 10b from the digital signal provided by the identification unit 26b. The communication and evaluation device 44b preferably records this as a torque socket device parameter Limit torque, a tolerance, a diameter of the tool holder 16b, a diameter of the fastener holder 12b and/or the wear parameter.

In a further method step 50b, the communication and evaluation device 44b uses the determined torque socket device parameters to calculate an advantageous setting for the external unit 34b designed as a hand-held power tool. Advantageously, a torque and speed of the external unit 34b embodied as a hand-held power tool can be set that is advantageous for the corresponding screwing.

In a further method step 52b, the screwing is carried out. The previously determined torque socket device parameters are stored together with further process data in a corresponding database in the communication and evaluation device 44b of the external unit 34b. Furthermore, in method step 52b, machine tool parameters of the external unit designed as a hand-held machine tool are stored for the screwing data. In a further method step, the stored data for the screw connection are preferably transmitted to a further external storage unit. Using the method according to the method steps 48b, 50b, 52b shown above, a screwing can be stored in a particularly advantageous and simple manner and thus logged.

In the figures 5 and 6 a third embodiment of the invention is shown. The figure 5 shows a system according to the invention from a torque socket device 10c according to the invention and an external unit 34c. The torque socket device 10c is designed as a torque slip socket. The torque socket device 10c includes a fastener receptacle 12c. The fastener receptacle 12c is provided for a tool to be fixed therein. The fastener receptacle 12c is located at a front axial end of the torque socket device 10c. The torque socket device 10c has a tool holder 16c. The tool holder 16c is intended to be connected to a hand tool or a hand tool to become. The tool holder 16c is designed as a force and form-fitting element. The tool holder 16c is arranged at a rear axial end of the torque socket device 10c.

The torque socket device 10c has a torque coupling 20c. The torque coupling 20c is arranged between the fastener receptacle 12c and the tool receptacle 16c. The torque coupling 20c is provided to at least partially decouple the fastening element receptacle 12c and the tool receptacle 16c from one another when a limit torque is reached. The torque coupling 20c has an input side 22c that faces the axially rearward end of the torque socket device 10c. The torque coupling 20c has an output side 24c that faces the axially forward end of the torque socket 10c. Torque clutch 20c has a clutch mechanism, not shown in detail, via which input side 22c and output side 24c are connected to one another.

The torque socket device 10c has an identification unit 26c. The identification unit 26c is provided for digital communication of at least one torque socket device parameter. A torque socket device parameter provided from the identification unit 26c to digital communication is formed as the limit torque of the torque coupling 20c. The identification unit 26c has an optical identification element 28c. The optical identification element 28c is designed as a QR code. The parameters of the torque socket device are stored in the optical identification element 28c. The torque socket device parameters can be read out from the optical identification element using a corresponding reading device. In principle, it would also be conceivable for the identification unit 26c to have a communication module for electronic digital transmission in addition and equivalently to the second exemplary embodiment.

The system also includes a hand tool 54c. The hand-held power tool 54c is embodied as a cordless screwdriver, for example. In principle, other handheld power tools are also conceivable. by means of Hand tool machine 54c, the torque socket device 10c can be used to carry out screwing and to correspondingly tighten fasteners with a defined torque.

The external unit 34c of the system is designed as an auxiliary handle. The external unit 34c designed as an additional handle is intended to be connected to the hand-held power tool 54c. The external unit 34c is designed as a smart additional handle. The external unit 34c embodied as an additional handle has a camera unit 56c, which is provided for detecting a torque socket device parameter that can be optically read out by the identification unit 26c. The camera unit 56c is arranged on a front side of the external unit 34c and, in a state attached to the hand-held power tool 54c, is aligned with a work area in which the torque socket device 10c is arranged. The external unit 34c has a communication and evaluation device 44c. The communication and evaluation device 44c is intended to receive, evaluate and/or store the torque socket device parameters provided by the identification unit 26c of the torque socket device 10c. The communication and evaluation device 44c is provided to evaluate image material provided by the camera unit 56c and to determine the torque socket device parameters stored in the recorded optical identification element 28c. If the torque socket device 10c also has a wear indicator unit, it is conceivable that this too is recorded by the camera unit 56c and evaluated by the communication and evaluation device 44c. The external unit 34c designed as an additional handle preferably has further sensors, such as an acceleration sensor, an inclination sensor and/or further optical sensors, which each output a sensor signal to the communication and evaluation device 44c. The communication and evaluation device 44c is intended to process the sensor signals output by the sensors.

The following is an example of a method according to the invention with a torque socket device 10c according to the invention, the hand tool 54c and the external unit 34c designed as an additional handle. In particular, a method of screwing, ie torque screwing, using the torque socket device 10c is to be described, in which a connecting means, such as a screw, is tightened with a defined torque.

In a first method step 48c, a user connects the torque socket device 10c to the hand-held power tool 54c. The external unit 34c designed as an additional handle reads the identification unit 26c, in particular the optical identification element 28c, of the torque socket device 10c via a camera unit 56c and the communication and evaluation device 44c. The torque socket device parameters read out are buffered in the communication and evaluation device 44c.

In a further method step 50c, the communication and evaluation device 44c of the external unit designed as an additional handle detects and processes parameters of the hand-held power tool 54c. Using the determined torque socket device parameters of the torque socket device 10c and the parameters of the handheld power tool 54c, the communication and evaluation device 44c determines advantageous settings for the handheld power tool 54c for performing the screwing and can transmit these to the handheld power tool 54c.

In a further method step 52c, the screwing is carried out. The previously determined torque socket device parameters are stored together with further process data in a corresponding database in the communication and evaluation device 44c of the external unit 34c designed as an additional handle. Furthermore, the sensor signals of the other sensors of the external unit 34c are also evaluated and stored during the screwing. In addition, the communication and evaluation device 44c also detects machine tool parameters of the handheld machine tool 54c during the screwing operation. The communication and evaluation device 44c preferably monitors the screwing on the basis of the detected parameters and emits a signal to the hand-held power tool 54c if it is on The target value of the screw connection, for example the correct torque, or a screw-in depth has been reached. The recorded parameters are stored in a database for the corresponding screwing. In a further method step, the stored data for the screw connection are preferably transmitted to a further external storage unit.

Claims (10)

Torque socket device with a fastener receptacle (12a; 12b; 12c), a tool receptacle (16a; 16b; 16c) and a torque clutch (20a; 20b; 20c) via which the fastener receptacle (12a; 12b; 12c) and the tool receptacle (16a; 16b ; 16c) are coupled to one another, the torque coupling (20a; 20b; 20c) being provided for at least partially decoupling the fastening element receptacle (12a; 12b; 12c) and the tool receptacle (16a; 16b; 16c) from one another when a limit torque is reached by an identification unit (26a; 26b; 26c) which is provided for at least digital communication of at least one torque socket device parameter. Torque socket device according to Claim 1, characterized in that the identification unit (26b) comprises a communication module (40b) which is intended to output the at least one torque socket device parameter as a digital signal. A torque socket device according to claim 1 or 2, characterized in that the digital signal output from the communication module (40b) is in the form of a radio wave. Torque socket device according to one of the preceding claims, characterized in that the torque socket device (10a; 10b; 10c) has at least one optical wear indicator unit (30a; 30b; 30c) which is provided at least to indicate a wear parameter of the torque clutch (20a; 20b; 20c) collect and/or issue. Torque socket device according to one of the preceding claims, characterized in that a limit torque of the torque clutch (20b) is adjustable and the identification unit (26b) at least one sensor element (38b) which detects the set limit torque. System consisting of an external unit (34a; 34b; 34c) and a torque socket device (10a; 10b; 10c) according to one of Claims 1 to 5, characterized in that the external unit (34a; 34b; 34c) has a communication and evaluation device ( 44a; 44b; 44c), which is intended to receive, evaluate and/or store the torque socket device parameters provided by the identification unit (26a; 26b; 26c) of the torque socket device (10a; 10b; 10c). System according to Claim 6, characterized in that the communication and evaluation device (44a; 44b; 44c) is intended to store at least one torque socket device parameter and one process parameter of a screw connection. System according to Claim 6 or 7, characterized in that the external unit (34c) has a camera unit (56c) which is intended to detect a torque socket device parameter which can be optically read out by the identification unit (26c). Method for a system according to one of Claims 6 to 8, characterized in that in at least one method step a torque socket device parameter provided by an identification unit (26a; 26b; 26c) and/or a process parameter of a screwing is processed and stored. Method according to claim 9, characterized in that in at least one further method step at least one machine tool parameter for a screwing is evaluated and stored.

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