Hand-held device with detection and control units

Abstract

Handheld device (100) for manual operation by a user, wherein the handheld device (100) comprises a processing unit (102) designed for processing a substrate (104), a detection unit (106) designed for processing, and a control unit (108) that is communicatively coupled to the detection unit (106) and that is configured to control the processing of the substrate (104) according to a target specification based on the detection data.

Description

[0001] The invention relates to a handheld device and a method for manual operation by a user, as well as a retrofit kit and a method for retrofitting a handheld device.

[0002] Conventional torque adapters, which are attached to the front of torque wrenches as an intermediate piece between the wrench and a suitable socket, are designed to measure the torque applied when tightening a nut. Furthermore, the user can set a maximum torque value, at which point the adapter emits an audible signal. This threshold is set using buttons located next to a digital display on the adapter. Data from the operations performed can be transferred to a computer via a USB cable for analysis.

[0003] DE 10 2015 209 017 A1 discloses an intermediate attachment between a machine and a tool in general. The torque can be adjusted purely mechanically.

[0004] Furthermore, wrenches are known that have an integrated digital display showing the torque. Their operation is based on torque measurement.

[0005] Furthermore, cordless power tools are known to include an integrated torque sensor. In these cases, the torque is usually determined indirectly by calculating it based on power consumption, rotational speed, and / or impact rate.

[0006] For integrated torque measurement, an adapter is also known which is arranged between a cordless power tool and its battery. This adapter is an add-on for a cordless power tool that has integrated torque measurement. Data can be read out using the adapter and transmitted via cable connection or to a computer or other user device. Similar systems are described in DE 10 2017 222 550 A1, WO 2015 / 061370 A1 and WO 2020 / 146696 A1.

[0007] Furthermore, a torque adapter designated HILTI SI 6AT A22 is known, which provides an adapter for a cordless impact wrench. The torque can be adjusted, and automatic shut-off occurs based on speed and energy consumption.

[0008] Especially when dealing with difficult or unusual processing tasks involving the preparation of a substrate using a handheld device, conventional handheld devices reach their limits.

[0009] It is an object of the present invention to enable the processing of a substrate, in particular the setting of a fastening element and / or the formation of a borehole in a substrate, in a simple and error-resistant manner.

[0010] This problem is solved by the articles with the features according to the independent claims. Further embodiments are shown in the dependent claims.

[0011] According to an embodiment of the present invention, a handheld device for manual operation by a user is provided, wherein the handheld device comprises a processing unit designed for processing a substrate, a detection unit designed for detecting detection data indicative of force transmission during processing of the substrate by means of the processing unit, and a control unit that is communicatively coupled to the detection unit and that is configured to control the processing of the substrate according to a target specification based on the detection data.

[0012] According to a further embodiment of the present invention, a retrofit kit is provided for retrofitting a handheld device, which has a processing unit for processing a substrate and a power supply unit for providing drive energy to power the processing unit, wherein the retrofit kit has a detection unit attachable to the processing unit, which is designed to detect detection data indicative for force transmission when processing the substrate by means of a processing unit, and a control unit attachable to the power supply unit, which is coupled to the detection unit in a communicative manner and which is configured to control the processing of the substrate according to a target specification based on the detection data.

[0013] According to a further embodiment of the invention, a method for retrofitting a handheld device designed for manual operation by a user and equipped with a processing unit for processing a substrate and with a power supply unit for providing drive energy to power the processing unit is provided by a retrofit kit with the features described above and / or for creating a handheld device with the features described above, wherein in the method the detection unit is detachably attached to the processing unit and the control unit is detachably attached to the power supply unit.

[0014] According to a further embodiment of the invention, a method for controlling a handheld device designed for manual operation by a user (in particular a handheld device with the features described above) is provided, wherein the method comprises processing a substrate by means of a processing device, detecting detection data indicative of force transmission during processing of the substrate by means of the processing device by means of a detection unit, and controlling, based on the detection data, the processing of the substrate according to a target specification by means of a control unit which is communicatively coupled to the detection unit.

[0015] Within the scope of this application, a "handheld device" can be understood to mean, in particular, a portable device that can be manually operated and carried by a user and with which a substrate can be processed. Specifically, a handheld device can be used to drill a hole in the substrate by applying a driving force in the form of a longitudinal force and / or a torque, and / or a driving force in the form of a longitudinal force and / or a torque can be applied to a fastening element to be inserted into a substrate. The driving force can, in particular, be a rotary or rotational driving force, optionally superimposed with a translational driving force. In other words, the handheld device can be designed to drive a machining device, and thus a drill bit and / or a fastening element, in a rotary direction. Alternatively, the driving force can also be a purely translational driving force.The driving force of a handheld device can be pneumatic, hydraulic, or electric, generated, for example, by a pneumatic system, a hydraulic system, or an electric motor, or it can be the muscle power of a user. Examples of handheld devices include a cordless screwdriver, a cordless drill / driver, a rotary screwdriver, an impact driver, a ratchet screwdriver, a drill, an impact wrench (especially a cordless impact wrench), and a hammer drill. Other examples of handheld devices include a screwdriver handle, an angled handle, a ratchet, or a torque wrench.

[0016] Within the scope of this application, the term "machining device" can be understood to mean, in particular, a mechanism or assembly that enables the machining of a substrate, especially the machining of a fastening element or the machining of material removal or the creation of a borehole. In particular, the machining device may include a bit housed in a chuck for actuating a drive in the head of a fastening element for inserting (with or without pre-drilling) the fastening element into the substrate using the handheld device. It is also possible that the machining device includes a drill bit housed in a chuck for drilling a borehole in a substrate. Within the scope of this application, a "fastening element" can be understood to mean, in particular, a body that can be inserted into a substrate or anchoring base using the handheld device, especially by rotation.Preferably, the fastening element is a screw.

[0017] Within the scope of this application, the term "substrate" can be understood to mean, in particular, a wall, and furthermore, in particular a vertical wall, a ceiling, a floor, or a fixture (for example, a piece of furniture). Materials for such an anchoring base include, in particular, wood or wood-based materials, but also concrete and masonry materials, metal, or plastic components. Furthermore, such a substrate can also be any composite material made up of several different material components. The substrate may contain cavities or may be solid (i.e., free of cavities).

[0018] Within the scope of this application, the term "detection unit" can be understood to mean, in particular, a component or assembly that may include one or more sensor elements (especially torque sensors) for generating sensor data. Sensor data generated by such a sensor element can allow conclusions to be drawn about force transmission (especially axial force transmission and / or torque transmission) during machining of the substrate. Such a sensor element can be configured to enable torque detection, axial force detection, temperature detection, velocity and / or acceleration detection, optical detection, acoustic detection, haptic detection, electrical, magnetic, or electromagnetic detection, etc. It is particularly advantageous to combine several of the aforementioned and other detection mechanisms.For example, the detection unit can have at least one strain gauge.

[0019] Within the scope of this application, the term "control unit" can be understood to mean, in particular, a component or assembly that can exert a controlling influence on the handheld device or individual assemblies of the handheld device (especially on the processing unit, a power supply unit, etc.) and thereby regulate the operation or operating mode of the handheld device. In particular, the control unit can regulate the operation or operating mode of the handheld device or a part thereof based on the detection data detected by the detection unit. The control unit can therefore, in particular, perform a control function. To perform computational tasks used for control or regulation, the control unit can include at least one processor.

[0020] Within the scope of this application, the term "communicatively coupled" can be understood to mean, in particular, that two or more components or assemblies of the handheld device (especially the detection unit and the control unit) can be configured for unidirectional or bidirectional data exchange. Such a communicative coupling can be, for example, wired (e.g., via at least one electrical line inside and / or outside the handheld device) or wireless (e.g., by transmitting electromagnetic radiation, such as visible light, infrared light, or radio frequency radiation). Such a communicative coupling can also be established via a communication network, such as a mobile network, an intranet, or the public internet. Optionally, the communicative coupling can be implemented via radio, a cable connection, and / or a communication link inside the handheld device.

[0021] Within the scope of this application, the term "target specification" can be understood to mean, in particular, one or more parameter values ​​(for example, a torque to be transmitted, a desired rotational speed, etc.) and / or one or more operating instructions (for example, a time profile of a torque to be applied) on the basis of which a machining task for processing a substrate is to be carried out. The target specification can therefore refer to a desired, predetermined, or ideal sequence of a machining task for processing the substrate.

[0022] For the purposes of this application, the term "retrofit kit" may be understood to mean, in particular, a kit consisting of one or more modules, adapters, components, or assemblies that is configured to be retrofitted or installed in an existing, functional handheld device. For this purpose, the components of the retrofit kit may be structurally and functionally adapted to the components of the existing handheld device being retrofitted. Retrofitting the handheld device may require only attaching the one or more components of the retrofit kit to the handheld device, optionally performing a configuration or installation, and then using the retrofitted handheld device to carry out a processing task for working on the substrate using the detection unit and the control unit.

[0023] According to an exemplary embodiment of the invention, a handheld device for processing a substrate is provided, which sensorially detects a force transmission characteristic (for example, a transmitted torque) and, based on the detected force transmission characteristic, adjusts the processing of the substrate as necessary in order to carry out the substrate processing according to a target specification and to fully or partially compensate for any deviations from the target specification. In this way, using detection and control resources, it can be ensured that even a less experienced user or a user performing a delicate substrate processing task can carry out the substrate processing task reliably, precisely, and user-friendly.Such a hand tool can, for example, measure a force-related parameter (such as torque) at its tip using the detection unit, preferably directly at the point of force transmission. The result of this measurement can then be used to determine any deviations from a desired target value and to adjust the control of the hand tool so that any discrepancies between the sensor-characterized actual process and a target process defined by the target value during the execution of a surface preparation task can be fully or partially compensated for or corrected.

[0024] It is particularly advantageous to design the components used for detection-based control of a substrate preparation task to fulfill a target specification—namely, a detection unit and a control unit—as a module or modules that can be easily retrofitted into a conventional handheld device lacking such functionality. For example, such a handheld device can be used to prepare a substrate with or without the retrofit kit. This makes it possible to retrofit existing handheld devices with a combined detection and control architecture, or to provide corresponding detection and control modules for multiple handheld devices and attach them to a specific device as needed to expand its functionality.With such a modular architecture, it is possible to adapt a standard handheld device so that actual force transmission parameters can be detected and the handheld device can be controlled in accordance with the detected force transmission parameters to achieve a target specification.

[0025] Compared to the prior art described above, exemplary embodiments of the invention offer advantages: Firstly, according to one exemplary embodiment, it is possible to transmit measured data (which may, for example, be indicative of torque) via a wired or wireless connection to another module of the handheld device or even to another device. Furthermore, the control unit and / or the detection unit can be operated using the same power supply (in particular, the same rechargeable battery or accumulator) that also powers the other components of the handheld device. Particularly advantageous, according to exemplary embodiments of the invention, is the possibility of using a retrofit kit consisting of a detection unit and a control unit to upgrade or retrofit a conventional handheld device.This retrofit option eliminates the need to purchase a completely new cordless hand tool with this function; instead, the detection or control module can simply be attached to a conventional hand tool as required.

[0026] Further exemplary embodiments of the handheld device, the retrofit kit and the methods are described below.

[0027] According to an exemplary embodiment, the detection unit can be attached to or mounted on the machining device, particularly as a removable detection adapter. Thus, the detection unit can be designed as a separate module that can be optionally attached to the handheld device, and especially to its machining device. This configuration facilitates the retrofitting of a conventional handheld device with a detection unit. Attaching the detection unit to the machining device is particularly advantageous because the detection of at least one parameter indicative of force transmission then takes place directly at the position where the substrate is being machined. An associated detection unit can have a first interface for connecting to the main housing of the handheld device and a second interface for connecting to the machining device.

[0028] According to an exemplary embodiment, the handheld device can have a power supply unit designed to provide drive energy for powering the processing device. The power supply unit can be detachably mounted on the handheld device, allowing a control unit, designed as a separate module, to be interposed between the battery and the main housing of the handheld device. Such a control unit can have a first interface for connecting to the main housing of the handheld device and a second interface for connecting to the power supply unit. For example, the power supply unit can be a battery or a connection to a power grid.

[0029] According to an exemplary embodiment, the control unit can be attached to or mounted on the power supply unit, particularly as a detachable control adapter. Thus, the control unit can be designed as a separate module that can be optionally attached to the handheld device, and especially to its power supply unit. This configuration facilitates the retrofitting of a conventional handheld device with a control unit. Attaching the control unit to the power supply unit is particularly advantageous because controlling the energy supply has a sensitive influence on the processing of the substrate. In particular, the control unit can adjust the degree of energy supplied by the power supply unit to the processing unit.

[0030] According to an exemplary embodiment, the processing device can be designed as a setting device for setting a fastening element into the substrate (in particular for rotating a fastening element into the substrate) and / or as a drilling device for drilling a hole in the substrate.

[0031] Other substrate preparation tasks can be performed according to other embodiments.

[0032] According to an exemplary embodiment, the handheld device can be designed to operate selectively with or without the detection unit and / or with or without the control unit, so that the handheld device is also operational without the detection unit and / or control unit. Thus, the handheld device can function to process a surface even without or with the detection unit removed, as well as without or with the control unit removed. By adding a control unit or a detection unit, which can be designed as two separate modules or as a single combined module, a conventional handheld device can also be equipped with the corresponding additional functionality, at least temporarily.

[0033] According to an exemplary embodiment, the detection unit and the control unit can form a physically connected assembly that can be handled separately from the rest of the handheld device. Such an embodiment is found, for example, in Figure 2 As illustrated, the detection unit and control unit are designed as a single unit, making operation particularly easy for the user. Furthermore, the appropriate shape of the component containing the detection and control units allows for intuitive attachment of both units to a retrofitted handheld device. This reliably prevents incorrect assembly, as the shape of the combined component mechanically prevents it from being installed on a handheld device without the detection and control units.

[0034] According to an exemplary embodiment, the handheld device can have a connecting body outside the rest of the device that mechanically connects the detection unit and the control unit. For example, the connecting body can be a rigid strut that can be manually held by a user to mount the common detection-control module to the handheld device. When mounted on the handheld device, the strut can be arranged at an angle when the processing device is attached to the surface for horizontal processing of a vertical substrate.

[0035] According to an exemplary embodiment, the connecting body can include a communication device for enabling communication between the detection unit and the control unit. For example, the connecting body, which may be designed as a rigid strut, can mechanically connect the detection unit and the control unit and also include a communication device (for example, an electrical connection line or a fiber optic cable) for communication between the detection unit and the control unit.

[0036] According to an exemplary embodiment, the detection unit can be configured to detect the detection data indicative of force transmission during substrate processing using the processing device at the start of a processing task. For example, if a user begins a pre-drilling, rotary setting of a fastener (e.g., a screw) in a substrate, the contact force applied by the user and / or the torque transmitted to the fastener can be measured by the detection unit. This makes it possible to determine whether or not the user is performing the setting task correctly, in particular with a force transmission that corresponds to a target specification.

[0037] According to an exemplary embodiment, the control unit can be configured to modify the substrate processing based on the detection data acquired at the start of the processing task, ensuring that the subsequent processing is carried out according to the target specification. If, by evaluating the detection data acquired by the detection unit at the beginning of the setting process, it is determined that the force applied by the user during the start of the setting task deviates from the target specification, the control unit can automatically modify the force applied during substrate processing to bring the actual force transmission into line with the target value for completing the substrate processing task. For example, the rotational speed can be increased or decreased compared to a user setting.

[0038] According to an exemplary embodiment, the control unit can be configured to find and execute a target specification assigned to the current machining task from a database containing a set of target specifications assigned to different machining tasks, based on properties of the machining task currently being performed (in particular, user-entered via a user interface and / or detected by the detection unit). A machining task to be performed can, for example, depend on the substrate (in particular, substrate material, substrate hardness, and / or the presence or absence of voids in the substrate) and on a fastening element (in particular, the type of fastening element, the material of the fastening element, and / or the geometry of the fastening element).A fastening task can be defined by user input and / or by detection data that can be determined by the detection unit (for example, optical detection of the substrate, detection of an inserted bit or drill, detection of substrate resistance during a drilling or setting process), etc. Once the substrate preparation task has been identified or is already known, a suitable data record containing information regarding the target specification can be selected from the database and subsequently applied.

[0039] According to an exemplary embodiment, the handheld device can have a storage device containing the database. If the handheld device itself has a storage device containing data records relating to various surface preparation tasks, a suitable data record can be selected and applied without communication between the handheld device and its environment.

[0040] According to an exemplary embodiment, the handset can have a communication device for communicating with a database located outside the handset, particularly in a cloud. In such a configuration, the handset can be connected to a database in a cloud via a communication network (especially the internet). This saves storage resources in the handset, which also makes it more comfortable for the user to carry and hold.

[0041] According to an exemplary embodiment, the set of target specifications for different machining tasks (especially for machining tasks with different fastening elements) can have target characteristic curves with respect to at least one operating parameter (especially with respect to at least one operating parameter from a group consisting of torque, impact rate, rotational speed, and electrical drive current). Once a specific machining task has been identified or defined, the operating parameters of the handheld device can be set accordingly and used automatically (i.e., without additional user activity).

[0042] According to an exemplary embodiment, the control unit can be configured to modify at least one value of the at least one operating parameter, based on a comparison between the detection data and the target value, during the execution of the processing task using the handheld device. For example, the modified target value can be stored in a database. In this way, suitable data sets can be stored as future target values ​​for future surface processing tasks. This avoids redundant computational effort when the same surface processing task is performed repeatedly.

[0043] According to an exemplary embodiment, the control unit can be configured to store indicative documentation data for the actual execution of subsurface treatment. In particular, this documentation data can allow conclusions to be drawn at any later time as to how a subsurface treatment task was carried out. For example, a corresponding data record can be stored in a database for each subsurface treatment task. In this way, even complex construction projects can be documented in a traceable manner. For instance, documentation data stored in this way can also be used as a target specification for the future execution of subsurface treatment.

[0044] According to an exemplary embodiment, the handheld device can have a storage device for storing the documentation data. Alternatively or additionally, the handheld device can have a communication device for communicating the documentation data to an entity outside the handheld device, in particular to a database stored in a cloud. In this way, documentation data can be stored locally in the handheld device and / or centrally in a cloud.

[0045] According to an exemplary embodiment, the detection unit and the control unit can be configured to iteratively repeat the processes of detecting the detection data using the detection unit and controlling the substrate processing using the control unit according to the target specification at least once during substrate processing. If, in a first iteration, a discrepancy between a target specification and the actual execution of a substrate processing task was detected by the detection unit and at least partially corrected by the control unit, a second detection can be performed to characterize the correspondingly changed force transmission during substrate processing. The changed actual execution can then be compared again with the target specification, and any remaining discrepancy can be further corrected.This process can be repeated until the actual implementation approximates the target specification with sufficient accuracy.

[0046] According to an exemplary embodiment, the handheld device can have at least one insertion device for inserting at least one module from a group consisting of the control unit, the detection unit, and a communication unit. At a suitable location on the handheld device, an insertion slot or the like can be provided according to the described design, allowing for the intuitive insertion or removal of a control module, a detection module, a communication module, or a combination of two or three elements consisting of the control unit, the detection unit, and the communication unit. Such a configuration enables particularly easy retrofitting of a handheld device, which is designed without detection and control resources as standard, with the corresponding functionality.

[0047] According to an exemplary embodiment, the handheld device can have a data interface for user input of the target specification or a substrate preparation task. In this way, the user can define a substrate preparation task to be performed with particular ease. For example, the user can define the substrate to be prepared, a tool element to be attached to the processing device (in particular a drill bit or a drill bit), a fastener to be processed using the processing device (for example, a screw), and / or a description of the processing task to be performed (for example, pre-drilling or pre-drilled installation of a fastener with or without a dowel). The functionality of the detection unit (in particular, a definition of the detection data to be detected) and the control unit (how it is controlled or...)(which is to be regulated) can be adjusted to this user-entered target value.

[0048] According to an exemplary embodiment, the handheld device can have a manual user interface for manually entering the target value by a user. For this purpose, a touchpad or a keypad can be provided on the handheld device, for example.

[0049] According to an exemplary embodiment, the handheld device can have a communication device for communication between the data interface and an entity outside the handheld device (in particular, an app on a user device and / or a cloud). A user can then enter target parameter values ​​and / or control commands using the user device (for example, a smartphone or tablet), in particular via a user interface defined by an app installed on the user device. The commands conveniently entered on the user device can then be transmitted wirelessly to the handheld device, for example, via a mobile network or the internet.

[0050] According to one exemplary embodiment, the handheld device can have a scanner as a data interface for scanning an access code to make data indicative of the target specification available. For example, the packaging of a fastener to be installed can be equipped with a QR code that can encode parameter values ​​and / or control commands defining a target specification. If a camera on the handheld device detects such a QR code, it can be decoded and either provide the parameter values ​​and / or control commands itself or transmit a link via which the parameter values ​​and / or control commands can be retrieved. Such a configuration is particularly user-friendly.

[0051] According to an exemplary embodiment, the method can include retrofitting the handheld device with the detection unit and / or the control unit. The detection unit and the control unit can, for example, be designed as separate adapter modules or as a single, physically connected assembly that can be handled separately from the rest of the handheld device. Accordingly, the handheld device can have a removable retrofit kit with the features described above for providing the detection unit and the control unit. For retrofitting, it may be sufficient to attach a detection module and a control module to the handheld device. These modules can be designed for positive-locking attachment to the handheld device, so that the handheld device, together with these modules, forms a single, handleable unit.Furthermore, the modules can be designed to automatically install themselves on the handheld device when attached, for example, by completing a corresponding pairing protocol. A user therefore only needs to attach the module(s) to the handheld device and can then begin the surface preparation task.

[0052] According to one embodiment, the detection unit can be detachably attached to the outside of the machining device, particularly without tools. For example, the detection unit can be plugged onto the underside of the machining device, particularly without tools. Alternatively, the detection unit can be detachably attached between the machining device and the housing of the handheld device, particularly without tools. For this purpose, the detection unit can, for example, be inserted between the machining device and the device housing while the handheld device is mounted, or, after temporary disassembly of the machining device, it can be placed from the device housing onto the device housing or onto the machining device before the machining device, the mounted detection unit, and the device housing are fastened together (particularly without tools).

[0053] According to one embodiment, the control unit can be removablely inserted into the power supply unit, particularly without tools. For this purpose, the power supply unit can be designed with an insertion slot for a control unit configured as a module. Alternatively, the control unit can be removablely mounted between the power supply unit and the device housing of the handheld device, particularly without tools. For this, the power supply unit can first be detached from the rest of the handheld device (particularly without tools), and then the control unit can be attached either to the device housing or to the power supply unit before the device housing, mounted control unit, and power supply unit are assembled (particularly without tools).

[0054] According to an exemplary embodiment, the handheld device can be a drill. Alternatively or additionally, the handheld device can be a cordless screwdriver, a cordless drill / driver, a rotary screwdriver, an impulse screwdriver, a ratchet screwdriver, an impact driver, in particular a cordless impact driver, and / or a hammer drill, or have corresponding functionality.

[0055] Exemplary embodiments of the present invention are described in detail below with reference to the following figures. Figure 1 shows a handheld device according to an exemplary embodiment of the invention. Figure 2 shows a retrofit of a handheld device with a retrofit kit according to an exemplary embodiment of the invention. Figure 3 shows a handheld device according to another exemplary embodiment of the invention. Figure 4 shows a three-dimensional view of a handheld device and Figure 5shows a detail of the handheld device according to another exemplary embodiment of the invention.

[0056] Identical or similar components in different figures are provided with the same reference numerals.

[0057] Before describing exemplary embodiments of the invention with reference to the figures, some general aspects of exemplary embodiments of the invention will be explained: According to one exemplary embodiment of the invention, a handheld device is provided in which a detection unit enables the actual measurement of at least one force transmission parameter, preferably at a tip of the handheld device. This measurement can be used to control and / or adjust the control of the handheld device accordingly, particularly when discrepancies with a target value for carrying out a surface preparation task are detected by sensors. For example, such control can cause an adjustment of operating parameters or even the switching off of the handheld device. For example, in the case of a hammer drill, the actual transmitted torque can be detected and the rotational speed controlled based on this.For example, the number of subsequent strikes can be controlled accordingly (for example, three more strikes) and the striking mechanism can then be switched off.

[0058] In exemplary embodiments, it is particularly preferred to retrofit one or more modules with a detection unit and control unit into a handheld device that is otherwise operational but lacks such functionality, in order to provide such a handheld device with a defined detection and control function.

[0059] It is also preferred that, in the case of a handheld device with a detection unit and control unit, the detected detection data and / or control data used for control purposes be stored for documentation purposes, for example, as a data record in a database. Such documentation makes it possible to trace, even retrospectively, which surface preparation task was carried out and how. In this way, traceability of even complex work steps is made possible. This allows for advantageous applications in the field of digitized construction management.

[0060] According to an exemplary embodiment of the invention, one or more torque, documentation and / or control adapters are provided, which enable or enable actual torque measurement, documentation of a torque-transmitting surface preparation task and / or control of a handheld device based on recorded torque data.

[0061] In particular, according to exemplary embodiments of the invention, the screwing or tightening of fasteners can be carried out in an optimal manner, i.e., in accordance with a target specification, so that no marks or damage occur on the material surface (e.g., wood). By tightening anchors professionally and in compliance with certification standards (e.g., to a target torque of 40 Nm ± 2%), errors due to incorrect assembly can be avoided. Furthermore, exemplary embodiments of the invention enable the traceability of the specific work steps for project management purposes.

[0062] For example, according to exemplary embodiments of the invention, cordless power tools, such as a cordless impact wrench, can be retrofitted with a torque adapter. With the aid of such a torque adapter (as an example of a combined detection and control unit according to an exemplary embodiment of the invention), sensor-based, reactive control of the cordless power tool is enabled to tighten a fastener with a defined torque. The torque adapter can be formed from two components or modules. These are the detection or measuring unit (which can, for example, be attached as an intermediate attachment to a front part of the cordless power tool) and the control unit (which can, for example, be attached as an intermediate attachment between the battery and the housing of the power tool).These two modules can communicate with each other during operation to enable a desired or optimal torque for screwing in a fastener and to document the process.

[0063] According to one embodiment of the invention, the detection or measuring unit (advantageously designed as an intermediate attachment or adapter on the front part of the cordless power tool) can measure a state with regard to power transmission (in particular torque transmission) at the beginning of the screwing process, for example, a torque, a rotational speed, and / or a stroke rate. The detection or measuring unit can thus detect or measure an actual state during the execution of the surface preparation task. This actual state (i.e., the detected or measured values) can be sent or transmitted to a control unit (for example, designed as an adapter between the battery and the housing of the power tool).This can be done, for example, using a cable connection (especially in the outdoor area of ​​the cordless power tool or via a cable already integrated into the power tool) or wirelessly (for example, Bluetooth or Wi-Fi). The detected current state can then be communicated to the control unit.

[0064] Furthermore, the target state or a target setting of the control unit can be known, for example, stored in internal or external memory of the handheld device. The target state or target setting can, for example, be preset at the factory in the internal memory of the control unit or handheld device, or alternatively, it can be downloaded from a cloud via a communication network (e.g., the internet). This target state or target setting can include corresponding sets of rules for different fasteners and for different conditions or substrate preparation tasks. Such sets of rules can include, for example, curves or characteristic curves for torque, impact rate, rotational speed, or current. To ensure that the target state or target setting is maintained during the execution of a substrate preparation task (e.g., for screwing in),To achieve the target value, the relevant parameters, such as the transmitted torque, can be adjusted. This information, determined by the control unit, can then be sent to the detection or measuring unit and / or the processing unit and / or a power supply unit so that it can adjust the actual value to the target value. In this way, it can be ensured, for example, that a screw of a specific type can be optimally screwed into a specific substrate made of a specific material with the intended torque.

[0065] According to one embodiment, several iterations of the described process (detection or measurement using the detection unit, data transmission to the control unit, and subsequent adjustment of the handheld device's operation by the control unit based on the detected data) can be performed to achieve the target state or specification. These iterations and associated data can be stored as work steps on the control unit's internal memory or on other internal or external handheld device memory, thus documenting them. Documenting the sequence of work steps allows for traceability, certification, and verification of the screw-in processes and can be stored in a memory location. According to one embodiment, this documentation data can be uploaded to a cloud.

[0066] The control unit, which according to an exemplary embodiment can be arranged between a battery and a housing of the hand-held power tool, can also be inserted or slid into the hand-held power tool or the battery as a module, depending on whether there is a slot for a module in the hand-held power tool or in the battery.

[0067] According to one embodiment, target parameters can be manually entered by a user via buttons (for example, on the battery, the power tool, or the measuring and / or control unit). Alternatively or additionally, these parameters can also be entered via a mobile device, such as a smartphone or tablet, using an app via Bluetooth, etc.

[0068] According to one embodiment, a scanner can be integrated into the control unit, which can be designed to scan a code on a package of fasteners in order to automatically download and adjust a target specification (in particular in the form of appropriate settings for optimal screwing in).

[0069] Preferably, the documentation can be transferred to a cloud via an integrated transceiver and / or via a module that can be inserted or used, for example, in the hand tool or battery.

[0070] According to an exemplary embodiment, a combination of a torque adapter (particularly designed as an intermediate offset) and a control adapter (particularly between the battery and the handheld power tool) can be provided, and communication between them can be enabled. This allows for reactive control or regulation of a battery-powered handheld power tool or other handheld device.

[0071] By repeatedly driving a specific screw type into a particular material, the user can create a characteristic curve for torque, speed, impact rate, and / or current for that screw, which can then be retrieved or used for future setting operations. It is also possible to upload such a target specification to a cloud for future substrate preparation tasks.

[0072] It is advantageous to retrofit conventional cordless power tools with a detection adapter and a control adapter, or with a combined detection and control adapter, thus eliminating the need to purchase a new handheld device without sacrificing detection-data-based control of the tool's machining capabilities. A retrofit kit can also be equipped with backward compatibility, allowing it to be used with older handheld power tools.

[0073] According to exemplary embodiments of the invention, a simplification of the work process and / or the documentation of a substrate preparation task is made possible. In particular, exemplary embodiments allow for the avoidance of errors through torque monitoring of an actual state compared to a target state.

[0074] Figure 1Figure 1 shows a handheld device 100, designed, for example, as a cordless impact wrench, according to an exemplary embodiment of the invention. Such a cordless impact wrench can, for example, quickly drive long threaded screws at high speed and tighten them forcefully with an impact, using, for example, torques between 50 Nm and 500 Nm. With an impact wrench, the tightening and loosening of fasteners 112 (for example, screws) can be achieved by pulsed rotary movements. Impact wrenches can also be used to create and loosen screw connections, generating a high torque so that no counter-holding of the tool is necessary. Figure 1The illustrated cordless impact wrench is used to insert a fastening element 112, designed as a screw, into a pre-drilled hole 140 (or alternatively without pre-drilling) in a substrate 104, for example a masonry wall. To simplify and improve this substrate preparation task, the handheld device 100 can be specially designed, as described in more detail below.

[0075] The illustrated handheld device 100 is designed for manual operation by a user. The user can hold the handheld device 100 by a handle 142 and press an activation button 144 on the handle 142. A housing 146 of the handheld device 100 encloses a main body of the handheld device 100, which contains or houses functional components (for example, an electric drive motor) of the handheld device 100.

[0076] In particular, the handheld device 100 has a processing unit 102 at a substrate-side end, which is designed for processing the substrate 104. In the illustrated embodiment, the processing unit 102 can have a chuck into which a suitable tool element for screwing the fastening element 112 into the substrate 104 can be inserted, according to the substrate processing task to be performed. Such a tool element can, for example, be a bit with a drive (in particular a Phillips head bit) for engaging a drive (in particular a Phillips head slot) in a head of the fastening element 112. Such a tool element attached to the processing unit 102 can be set into rotation by means of the processing unit 102, which can be transmitted to the fastening element 112, thereby setting it into the substrate 104.In this way, a force transmission in the form of torque and / or impacts can be transferred from the hand device 100 to the fastening element 112 by means of the processing device 102, whereby the fastening element 112 is inserted into the substrate 104 and fixed there.

[0077] In the illustrated embodiment, a power supply unit 110, designed as a removable and rechargeable battery module, serves to provide electrical drive energy for powering the processing unit 102. For recharging after depletion, the power supply unit 110, designed as a battery module, can be temporarily removed from the handle 142 on the main body and recharged, for example, by means of a charging unit connected to a power grid.

[0078] If a suitable tool element (in particular a suitable bit) is clamped in the machining device 102, the output of the tool element engages the drive of the fastening element 112. If the user then presses the actuating button 144, electrical drive energy is transferred from the power supply unit 110 to the drive motor in the main body of the hand device 100, so that the drive motor rotates the machining device 102 to insert the fastening element 112 into the pre-drilled hole 140 in the substrate 104.

[0079] The handheld device 100 described so far contains components that are known per se. Advantageously, the illustrated handheld device 100 can be easily retrofitted in the manner described below using a one-piece retrofit kit 150 in the illustrated embodiment to provide improved functionality.

[0080] For retrofitting, a detection unit 106 from the retrofit kit 150 is attached to the machining device 102 or mounted between the machining device 102 and the main body of the handheld device 100, which is enclosed by the device housing 146. This detection unit 106 is designed to detect indicative detection data for force transmission during machining of the substrate 104 using the machining device 102. More precisely, the detection unit 106 has one or more sensors, for example, a torque sensor for detecting a transmitted torque, a longitudinal force sensor for detecting a transmitted longitudinal force or impact force, etc. By detecting a transmitted torque and / or a transmitted longitudinal force or impact force, the force transmission from the handheld device 100 to the fastening element 112 and the substrate 104 can be sensorially detected.The detection unit 106 can, for example, be placed onto the processing device 102 from the substrate side. Alternatively, the detection unit 106 can be adapted at its opposite ends to the geometry of the processing device 102 or the device housing 146 and therefore be positively fitted between the processing device 102 and the device housing 146.

[0081] Furthermore, for retrofitting, a control unit 108 of the retrofit kit 150 is inserted between the main body, bounded by the device housing 146, and the removable power supply unit 110 (in the form of a battery module). The control unit 108 is communicatively coupled to the detection unit 106, for example via an electrical or optical connection line in a connecting body 116 of the retrofit kit 150, designed, for example, as struts, between the detection unit 106 and the control unit 108. As in Figure 1As shown, the detection unit 106 and the control unit 108 are mechanically and communicatively connected by the connecting body 116 outside the rest of the handheld device 100. More precisely, the connecting body 116 preferably has a communication device 118 inside it for communicatively coupling the detection unit 106 and the control unit 108. Advantageously, the connecting body 116 can form a mechanical connection between the detection unit 106 and the control unit 108 in addition to a communication connection. By means of the communication device 118, detection data detected by the detection unit 106, which characterize the force transmission when processing the substrate 104, can be transmitted to the control unit 108. The control unit 108 can have a processor that can process the detection data in order to control or regulate the processing of the subsurface 104 based on the detection data.In particular, the control unit 108 can compare the detection data characterizing the actual processing of the substrate 104 with a target specification. The target specification can indicate how the substrate 104 should ideally be processed using the handheld device 100. If the control unit 108 detects discrepancies between the actual processing and the target specification, it can adjust the control of the functional components of the handheld device 100 to ensure compliance with, or at least a better approximation of, the target specification during further processing of the substrate 104. For this purpose, one or more operating parameters of the handheld device 100 can be set, changed, or adjusted. For example, the transmitted torque, the number and / or intensity of applied blows, etc., can be adjusted accordingly by the control unit 108.In particular, the control unit 108 can, for this purpose, control the power supply unit 110 in a suitable manner to provide electrical energy to the drive motor in the device housing 146, or limit the electrical energy accordingly to meet the target specification. Advantageously, the control unit 108 is adapted at its opposite ends to the geometry of the power supply unit 110 and the device housing 146, respectively, so that the control unit 108 can be positively fitted between the processing device 102 and the device housing 146 and can directly control the components of the handheld device 100 described above.

[0082] In the illustrated embodiment, the control unit 108 and the detection unit 106 are connected by means of the connecting body 116 to form a single, easily handled retrofit kit 150, so that the retrofit kit 150 can be attached as a whole to a conventional handheld device 100 by a user. For this purpose, the user simply places the detection unit 106 onto the processing unit 102. In an alternative embodiment, a user can detachably mount the detection unit 106 between the processing unit 102 and a processing-side interface of the device housing 146. Furthermore, the control unit 108 can be detachably mounted between the power supply unit 110 and a power supply-side interface of the device housing 146.The geometry of the connecting body 116 also defines the relative position and orientation between the detection unit 106 and the control unit 108, thus mechanically preventing incorrect assembly of the retrofit kit 150 on the handheld device 100. The formation of a mechanical connection between the one-piece retrofit kit 150 and the handheld device 100 also automatically creates a functional connection between the retrofit kit 150 and the handheld device 100. This functional connection forms a force coupling with the detection unit 106 on the side of the processing device 102, enabling the detection unit 106 to detect force transmission parameters during processing of the substrate 104.Furthermore, this functional connection on the side of the power supply unit 110 enables a control connection with the control unit 108, which controls or regulates the provision of electrical drive energy from the power supply unit 110 to the drive motor, for example designed as an electric motor, in the device housing 146.

[0083] In its assembled state, the connecting body 116 of the retrofit kit 150, designed as struts, runs along a direct, inclined connecting line between the detection unit 106 and the control unit 108, so that together with the device housing 146, the retrofitted handheld device 100 has an essentially triangular cross-section. This also ensures that the operating button 144 remains operable and the handle 142 remains accessible to a user, even when the retrofit kit 150 is attached to the handheld device 100.

[0084] Advantageously, the handheld device 100 is designed to be operated selectively with or without the detection unit 106 and / or with or without the control unit 108, so that the handheld device 100 is also operational without the detection unit 106 and / or control unit 108. The handheld device 100 can therefore also be operated in the conventional manner without the retrofit kit 150. Conversely, a conventional handheld device 100 can thus be easily retrofitted with the described detection and control functionality simply by mechanically attaching the one-piece retrofit kit 150. Advantageously, according to Figure 1 The detection unit 106 and the control unit 108 form a physically connected assembly that can be handled separately from the rest of the handheld device 100 (see reference numeral 114 in Figure 2 ).

[0085] Advantageously, the detection unit 106 can be configured to detect the indicative detection data for force transmission during machining of the substrate 104 using the machining device 102 at the beginning of a machining task. Thus, when the user begins to rotate the fastening element 112, which engages with the tool element on the machining device 102, by pressing the actuating button 144 and thereby inserting it into the pre-drilled hole 140 in the substrate 104, the detection of torque and / or axial force can begin. The corresponding detection data is transmitted from the detection unit 106 to the control unit 108 via the communication device 118.In the illustrated embodiment, the control unit 108 is designed to adjust the further processing of the substrate 104 based on the detection data detected at the start of the machining task, so that the machining task is carried out in accordance with a target specification. For example, if the control unit 108 determines that the actually transmitted sensor-detected torque is too high or too low compared to a target torque defined in the target specification, the control unit 108 can influence the power supply unit 110 and thus also the drive motor in the device housing 146, so that an actual torque of a suitable magnitude corresponding to the target torque is subsequently exerted by the machining device 102 on the fastening element 112.

[0086] As part of its operation, the control unit 108 can also be configured to find, select, and execute a target specification assigned to the current processing task from a set of target specifications assigned to different processing tasks stored in a database, based on user-entered properties of a processing task currently being executed via a user interface 130 and / or detected by the detection unit 106. For this purpose, the handheld device 100 can have an electronic storage device 120 in which corresponding data records from the target specification database are stored. In the illustrated embodiment, the storage device 120 is attached to the control unit 108.For example, the control unit 108 can infer a specific machining task from the detection data detected by the detection unit 106 or through user input via the user interface 130. For example, the control unit 108 can recognize that a user wants to insert an M8 screw (for example, optically detectable and / or detectable based on the forces occurring or defined by user input) into a pre-drilled hole 140 (for example, recognizable by a reduced force transmission compared to a hole without pre-drilling or optically detectable or defined by user input) in a substrate 104 made of brick (for example, optically detectable based on red drill dust or defined by user input).For the detection of the machining task, force transmission-related detection data, as well as other detection data (for example, optical detection data from an optical camera, not shown, on the machining unit 102), can be used. Alternatively or additionally, the handheld device 100 can have a data interface 126 in the form of a manual user interface 130 for manual input of the target specification and / or a machining task to be performed by a user. For example, the user interface 130 can be a touchpad via which a user can define a target specification or a machining task to be performed.

[0087] A multitude of data records corresponding to different processing tasks can be stored in the database of the storage device 120. Based on a defined and / or detected processing task, the control unit 108 can search the database and—for example, according to the best-match principle—select the most suitable data record, which can then be used as a target specification for executing the processing task. In other words, based on processing task data determined primarily by sensors and / or entered by the user, the control unit 108 can select a target specification that best suits this processing task, the execution of which is then implemented by the handheld device 100 through appropriate control by the control unit 108.Advantageously, the set of target specifications for different machining tasks, for example, for machining tasks with different fasteners 112 and / or different substrates 104, can include target characteristic curves with respect to at least one corresponding operating parameter of the handheld device 100. Such operating parameters can be, for example, a torque, a stroke rate, a rotational speed, an electrical drive current, etc. Such a target characteristic curve can specify a target time profile of the corresponding operating parameter, which is followed by a corresponding control of the handheld device 100 by means of the control unit 108 during machining of the substrate 104.

[0088] In particular, the control unit 108 can be configured to modify the values ​​of one or more operating parameters during the execution of the machining task using the handheld device 100, based on a comparison between the detection data with the target values ​​for those parameters, in order to carry out the machining task in accordance with the target values. It is also possible to store a target value that may have changed during the execution of the machining task in the database of the storage device 120. The database can thus be continuously updated and improved to take into account practical experience gained during the execution of machining tasks.

[0089] The control unit 108 can also be advantageously configured to store indicative documentation data for the actual execution of the substrate processing 104. Using data sets corresponding to the documentation data, it is possible to document retrospectively how a substrate processing task can actually be carried out. For this purpose, the documentation data detected by the detection unit 106 can, for example, be stored in the storage device 120.

[0090] Advantageously, the control unit 108 can be configured to iteratively repeat the processes of detecting the detection data using the detection unit 106 and controlling the processing of the substrate 104 according to the target specification at least once. This allows for the implementation of a control loop executed multiple times, which continuously updates the actual operating parameters of the handheld device 100 in several repeated iterations, thereby dynamically adapting the operating parameters to the target specification.

[0091] Figure 2 Figure 1 shows a retrofit of a handheld device 100 with a retrofit kit 150 according to an exemplary embodiment of the invention.

[0092] In a view 160, a conventional hand device 100 with processing unit 102, power supply unit 110, handle 142, operating button 144 and other functional components (for example, drive motor) is shown in a main body of the hand device 100 bounded by the device housing 146.

[0093] In a view 162, it is shown how the conventional hand device 100 according to view 160 has been retrofitted by simply attaching a one-piece retrofit kit 150, which is shown separately in a view 164.

[0094] The retrofit kit 150 shown in view 164 for retrofitting the hand device 100 according to view 160 has a detection unit 106 which can be subsequently attached to the processing device 102 and which is designed to detect indicative detection data for force transmission when processing the substrate 104 by means of the processing device 102.

[0095] Furthermore, the retrofit kit 150 includes a control unit 108 that can be retrofitted to the power supply unit 110, which is coupled to the detection unit 106 in a communicative manner and which is set up based on the detection data to control the processing of the subsurface 104 according to a target specification.

[0096] To retrofit the handheld device 100 according to Figure 160 using the retrofit kit 150 according to Figure 164, and to equip the retrofitted handheld device 160 according to Figure 162, the detection unit 106 is detachably mounted on the processing unit 102, and the control unit 108 is detachably mounted between the power supply unit 110 and the device housing 146 of the handheld device 100. To retrofit the handheld device 160, it is sufficient to handle a single retrofit body and detachably mount it on the conventional handheld device 160.

[0097] Thus, it shows Figure 2An exemplary design of a torque, documentation and control adapter in the form of the retrofit kit 150.

[0098] Figure 3 Figure 1 shows a handheld device 100 according to another exemplary embodiment of the invention.

[0099] The exemplary embodiment according to Figure 3 differs from the embodiment according to Figure 1 in particular by the fact that according to Figure 3 the communication device 118 for data communication of the handheld device 100 is configured in a different way than according to Figure 1 Furthermore, according to Figure 3 unlike Figure 1 The detection unit 106 and the control unit 108 are designed as separate modules.

[0100] Thus, according to Figure 3 The detection unit 106 can be attached and removed separately from the control unit 108 on the processing device 102 and is thus designed as a removable detection adapter.

[0101] In the corresponding manner, according to Figure 3 The control unit 108 can be attached to the power supply unit 110 separately from the detection unit 106 and is removable, and is thus designed as a removable control adapter. The connecting body 116 is designed according to Figure 3 unnecessary, so the retrofit kit 150 according to Figure 3 It can be designed to be particularly compact. The retrofit kit 150 according to Figure 5 It is designed in the form of two independently manageable modules: the detection adapter and the control adapter.

[0102] In order to fulfill the requirements in Figure 1 The described functionality of the detection unit 106 and the control unit 108 is to enable data communication between the detection unit 106 and the control unit 108, in particular to enable the transmission of detection data from the detection unit 106 to the control unit 108, according to Figure 3a communication line (for example, electrical or optical) is routed through the interior of the device housing 146 as a component of the communication device 118.

[0103] Furthermore, the handheld device 100 has a wirelessly operating component of the communication device 118, which is used for wireless communication with a device according to Figure 3 The entity located outside the handheld device 100 is configured with a database. More precisely, a wireless communication interface of the communication device 118 of the handheld device 100 communicates via a communication network 166, for example the Internet, with which, according to Figure 3The storage device 120 is located in a cloud 122. The latter forms a database in which, for example, target progress data records for different subsurface processing tasks, documentation data records, etc., can be stored. Thus, the wireless communication interface of the communication device 118 of the handheld device 100 also serves to transmit documentation data to the database stored in the cloud 122.

[0104] In the embodiment according to Figure 3The handheld device 100 can also be configured to communicate via the wireless communication interface of the communication device 118 between its internal data interface 126 and the cloud 122 and / or another entity 132. This communication can take place, for example, with an app that may be installed on a user terminal device 134. The user terminal device 134 could, for example, be a mobile device. A user can thus transmit data to the handheld device 100 via the user terminal device 134, such as defining a surface preparation task to be performed using the handheld device 100 and / or entering a target specification. Conversely, the handheld device 100 can also transmit data to the user terminal device 134, for example, documentation data.

[0105] Furthermore, the handheld device 100 has according to Figure 3A scanner 136 is connected to the data interface 126 for scanning an access code to make data indicative of the target specification available. For example, if a user holds a QR code on the packaging of a fastener 112 to the scanner 136, the scanner 136 can, based on the QR code, determine information describing a substrate preparation task using the fastener 112 and / or an associated target specification for carrying out this substrate preparation task, for example in the QR code itself or via a link encoded in the QR code (which may specify a corresponding address on the Internet).

[0106] Figure 4 shows a three-dimensional view of a handheld device 100 and Figure 5 shows a detail of the handheld device 100 according to another exemplary embodiment of the invention.

[0107] According to Figure 4 and Figure 5For example, the power supply unit 110, designed here as a removable battery module, can be equipped with a slot or shaft for inserting a module that can perform the described function of a control unit 108. Although this in Figure 4 and Figure 5 If not shown, such an insertion device 124, for example designed as a slot or shaft, for inserting a module that performs the above-described function of a communication device 118, can also be formed in the area of ​​the processing device 102.

[0108] It should also be noted that "having" does not exclude any other elements or steps, and "a" or "an" does not exclude a plurality. Furthermore, it should be noted that features or steps described with reference to one of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference numerals in the claims are not to be considered as limitations.

Claims

1. Handheld device (100) for manual operation by a user, the handheld device (100) comprising: a processing unit (102) designed for processing a substrate (104); a detection unit (106) designed for detecting detection data indicative of force transmission during processing of the substrate (104) by means of the processing unit (102); and a control unit (108) coupled communicatively with the detection unit (106) and configured to control the processing of the substrate (104) according to a target specification based on the detection data.

2. Handheld device (100) according to claim 1, comprising at least one of the following features: wherein the detection unit (106) is attachable to or mounted on the processing device (102), in particular is designed as a removable detection adapter; comprising a power supply device (110) configured to provide drive energy for powering the processing device (102), wherein in particular the control unit (108) is attachable to or mounted on the power supply device (110), in particular is designed as a removable control adapter; wherein the processing device (102) is configured as a setting device for setting a fastening element (112) into the substrate (104) and / or as a drilling device for drilling a hole in the substrate (104);wherein the handheld device (100) is configured to be operated selectively with or without the detection unit (106) and / or with or without the control unit (108), such that the handheld device (100) is also operational without the detection unit (106) and / or control unit (108); wherein the detection unit (106) and the control unit (108) form a physically connected assembly (114) that can be handled separately from the rest of the handheld device (100), in particular comprising a connecting body (116) outside the rest of the handheld device (100) that mechanically connects the detection unit (106) and the control unit (108), and wherein, in particular, the connecting body (116) further comprises a communication device (118) for communicative coupling of the detection unit (106) and the control unit (108);wherein the detection unit (106) is configured to detect the detection data indicative for force transmission during the processing of the substrate (104) by means of the processing device (102) at the start of a processing task, wherein in particular the control unit (108) is configured to adapt the processing of the substrate (104) based on the detection data detected at the start of the processing task so that the further execution of the processing task takes place in accordance with the target specification.

3. Handheld device (100) according to one of claims 1 to 2, wherein the control unit (108) is configured to select and execute a target specification assigned to the current processing task from a set of target specifications assigned to different processing tasks stored in the database, based on properties of a processing task currently to be performed entered by the user in a database, in particular by means of a user interface (130) and / or detected by means of the detection unit (106).

4. Handheld device (100) according to claim 3, comprising at least one of the following features: the handheld device (100) has a storage device (120) containing the database; the handheld device (100) has a communication device (118) for communicating with the database stored outside the handheld device (100), in particular in a cloud (122);wherein the set of target specifications for different machining tasks, in particular for machining tasks with different fastening elements (112), has target characteristic curves with respect to at least one operating parameter, in particular with respect to at least one operating parameter from a group consisting of a torque, a stroke rate, a rotational speed and an electrical drive current, wherein in particular the control unit (108) is designed, based on a comparison between the detection data with respect to the at least one operating parameter with the target specification with respect to the at least one operating parameter, to change at least one value of the at least one operating parameter during the execution of the machining task by means of the hand-held device (100) in accordance with the target specification, and in particular to store the changed target specification in a database.

5. Handheld device (100) according to one of claims 1 to 4, wherein the control unit (108) is configured to store indicative documentation data in a database for the actual execution of the processing of the substrate (104).

6. Handheld device (100) according to claim 5, comprising at least one of the following features: the handheld device (100) has a storage device (120) for storing the documentation data; the handheld device (100) has a communication device (118) for communicating the documentation data to an entity outside the handheld device (100), in particular to a database stored in a cloud (122).

7. Handheld device (100) according to one of claims 1 to 6, comprising at least one of the following features: wherein the detection unit (106) and the control unit (108) are configured to iteratively repeat the processes of detecting the detection data by means of the detection unit (106) and controlling the processing of the substrate (104) by means of the control unit (108) according to the target specification during the processing of the substrate (104) at least once; comprising at least one insertion device (124) for inserting at least one module from a group consisting of the control unit (108), the detection unit (106) and a communication device (118).

8. Handheld device (100) according to one of claims 1 to 7, comprising a data interface (126) for user input of the target specification.

9. Handheld device (100) according to claim 8, comprising at least one of the following features: the handheld device (100) has a manual user interface (130) as a data interface (126) for manual input of the target specification by a user; the handheld device (100) has a communication device (118) for communicating the data interface (126) with an entity (132) outside the handheld device (100), in particular with an app of a user terminal device (134) and / or with a cloud (122); the handheld device (100) has a scanner (136) as a data interface (126) for scanning an access code to make data indicative of the target specification accessible.

10. Hand-held device (100) according to any one of claims 1 to 9, comprising at least one of the following features: designed as at least one of a group consisting of a drill, a cordless screwdriver, a cordless drill / driver, a rotary screwdriver, an impulse screwdriver, a ratchet screwdriver, an impact wrench, in particular a cordless impact wrench, and a hammer drill; comprising a removable retrofit kit (150) according to claim 11 for providing the detection unit (106) and the control unit (108).

11. Retrofit kit (150) for retrofitting a handheld device (100) which has a processing unit (102) for processing a substrate (104) and a power supply unit (110) for providing drive energy to power the processing unit (102), wherein the retrofit kit (150) comprises: a detection unit (106) that can be retrofitted to the processing unit (102) and is configured to detect detection data indicative for force transmission when processing the substrate (104) by means of the processing unit (102); and a control unit (108) that can be retrofitted to the power supply unit (110) and is coupled to the detection unit (106) in a communicative manner and is configured to control the processing of the substrate (104) according to a target specification based on the detection data.

12. Method for retrofitting a handheld device (100) designed for manual operation by a user and equipped with a processing unit (102) for processing a substrate (104) and with a power supply unit (110) for providing drive energy to power the processing unit (102), with a retrofit kit (150) according to claim 11 and / or for forming a handheld device (100) according to any one of claims 1 to 10, wherein in the method the detection unit (106) is detachably attached to the processing unit (102) and the control unit (108) is detachably attached to the power supply unit (110).

13. Method according to claim 12, wherein in the method the detection unit (106) is detachably attached to the outside of the processing device (102) or is detachably attached between the processing device (102) and a device housing (146) of the handheld device (100) and / or the control unit (108) is detachably inserted into the power supply device (110) or is detachably attached between the power supply device (110) and the device housing (146) of the handheld device (100).

14. Method for controlling a handheld device (100) designed for manual operation by a user, in particular according to one of claims 1 to 10, wherein the method comprises: processing a substrate (104) by means of a processing device (102); detecting detection data indicative of force transmission during the processing of the substrate (104) by means of the processing device (102) by means of a detection unit (106); and controlling, based on the detection data, the processing of the substrate (104) according to a target specification by means of a control unit (108) which is communicatively coupled to the detection unit (106).

15. Method according to claim 14, wherein the method comprises retrofitting the handheld device (100) with the detection unit (106) and / or with the control unit (108), wherein in particular the detection unit (106) and the control unit (108) are designed as separate adapter modules or as an assembly (114) that is physically connected to each other and can be handled separately from the rest of the handheld device (100).