Method for using a hand-held pull and push device for repairing motor vehicle components

Description

[0001] The invention relates to a method for using a hand-held pulling and pushing device for repairing motor vehicle components and to a system for carrying out the method.

[0002] Hand-held pulling devices, i.e. devices that can be used by a person in a mobile manner, such as, for example, hand-held riveting tools for setting blind rivet elements, such as blind rivets and blind rivet nuts, which have a drive unit with an electric motor-driven screw drive, are known in a variety of designs from the prior art. Furthermore, electric pressing devices also exist which, likewise using a screw drive, convert the rotary movement generated by an electric motor into a linear movement of the pressing tool, for example, to carry out punching processes or to set punch rivets. A method for using a hand-held pulling and pushing device for repairing motor vehicle components is disclosed, for example, in DE 10 2016 116879 A1.

[0003] The riveting and pressing devices described above are used, for example, in workshops, particularly in motor vehicle workshops, as part of repair work on the body of vehicles, defective systems, devices, equipment or the like. The difficulty in repairing defective motor vehicle components, in particular defective body components, for example rivets or defective vehicle electronic components, e.g. crimped cables, lies in the fact that a large number of different motor vehicle components are used due to the large number of different vehicles and vehicle variants. This diversity makes it a major challenge to select a tool for the hand-held pulling and pushing device that is suitable for repairing the motor vehicle component, since motor vehicle components, especially of the same type, often differ only slightly from one another, namely in just a few features.

[0004] Even for specialists, selecting the right tool represents a major challenge, one that is highly prone to errors. An incorrect selection of the component to be replaced leads to longer downtimes and higher costs.

[0005] Based on this, the object of the invention is to provide a method for using a hand-held pulling and pushing device for repairing motor vehicle components and a system for carrying out the method that enables a quick and reliable selection of a suitable tool in a simple manner.

[0006] The invention solves the problem by a method having the features of claim 1 and a system having the features of claim 9. Advantageous further developments are specified in the dependent claims.

[0007] The handheld pull-and-push device comprises a drive unit with a battery-operated electric motor and a threaded drive connected to the electric motor for transmitting the pull and push forces resulting from the direction of rotation of the electric motor to a coupling unit. Furthermore, the pull-and-push device comprises a tool holder connected to the coupling unit.

[0008] In the method according to the invention for using the hand-held pulling and pushing device for repairing motor vehicle components, the following method steps are carried out: Identifying a motor vehicle component to be machined by means of a mobile handheld device with a display unit and a transmitting and receiving unit for wirelessly transmitting information to a server unit; selecting a tool suitable for machining the identified motor vehicle component by means of the mobile handheld device and / or the server unit; displaying information about the suitable tool on the display unit of the mobile handheld device; arranging the suitable tool on the tool holder of the handheld pulling and pushing device; machining the motor vehicle component by means of the handheld pulling and pushing device.

[0009] The method according to the invention is characterized in that it enables simple and reliable selection of the appropriate tool using a mobile handheld device. For this purpose, the mobile handheld device has a display unit for presenting information and a transmitting and receiving unit for wirelessly transmitting information to a server unit.

[0010] Particularly when used in repair shops, especially motor vehicle repair shops, this method can be used to assist workshop employees in selecting the appropriate tool for the handheld pulling and pushing device in a simple, convenient, and reliable manner. By selecting a suitable tool for the identified motor vehicle component using the mobile handset and / or the server unit, the time required to set up the handheld pulling and pushing device and the risk of selecting the wrong tools are reduced. This can reduce the repair time and thus the costs for processing and / or repairing the motor vehicle component.

[0011] The defective motor vehicle component, for example a cable, a pipe, a rivet or a crimp connection, is identified by the workshop employee using the mobile handheld device. Based on the identified motor vehicle component, the suitable tool for processing the identified motor vehicle component is selected using the mobile handheld device and / or the server unit communicating with the mobile handheld device via the transmitting and receiving unit. The information on the suitable tool is shown on the display unit of the mobile handheld device, for example in the form of written, visual and / or audiovisual instructions, e.g. as images or videos. The workshop employee arranges the tool that matches the information displayed on the mobile handheld device on the tool holder of the hand-held pull and push device.The machining process then begins, in which the workshop employee processes, in particular repairs, the motor vehicle component using the hand-held pulling and pushing device.

[0012] The workshop employee is able to retrieve the required tool from a toolbox and / or storage area, if available, or reserve it. Particularly advantageous is that reservation options are already displayed in addition to the information provided on the display unit. It is particularly advantageous that the workshop employee has the option of reserving the desired tool directly on the display unit, for example, in an IT system.This makes it particularly easy for the workshop employee to select a suitable tool for processing and / or repairing a defective motor vehicle component, to arrange the suitable tool on the hand-held pull and push device or, if necessary, to reserve it for use when required, for example by activating a corresponding signaling device at its storage location, so that the processing and / or repair of the defective motor vehicle component can then be planned or can take place within a very short time.

[0013] The identification of the motor vehicle component to be processed can in principle be carried out in any desired manner, with the workshop employee, for example, using the mobile handheld device to display images of motor vehicle components to be identified stored in a database on the server unit on the display unit of the mobile handheld device and to compare them with the motor vehicle component. According to an advantageous development of the invention, however, it is provided that, in order to identify the motor vehicle component, an electronic image of the motor vehicle component to be identified is created using a camera unit of the mobile handheld device. The electronic image is transmitted to an evaluation unit of the server unit via the transmitting and receiving unit for identifying the motor vehicle component in the server unit by comparing it with images of motor vehicle components to be identified stored in a database.The information stored in the database for the identified motor vehicle component for selecting the appropriate tool is transmitted to the handheld device.

[0014] To create the electronic image, the workshop employee points the handheld device with the camera unit at the motor vehicle component to be identified. After the workshop employee has created the electronic image using the camera unit of the mobile handheld device, it is transmitted to the server unit via the transmitting and receiving unit. Within the server unit, the evaluation unit then compares the electronic image with the images stored in the server unit's database. The data for a matching motor vehicle component stored in the database, e.g. a product name of the identified motor vehicle component, is then transmitted from the server unit to the mobile handheld device for selection of the appropriate tool. Wireless data transmission takes place, for example, via Bluetooth, a mobile network or a WLAN connection within the repair shop.The information on the identified motor vehicle component is preferably displayed on the display unit of the mobile handset, usually an electronic display.

[0015] The use of a mobile handheld device enables simple and reliable identification of motor vehicle components. By linking the database to a central server unit, the user can always be provided with up-to-date information by centrally updating the linked data. Unlike with identification that only runs locally on the mobile handheld device, there is no need to regularly update the information stored on the handheld device.

[0016] The selection of a suitable tool can in principle be carried out in any manner using the mobile handheld device and / or the server unit, wherein a suitable tool is selected, for example, by manually entering the product name of the identified motor vehicle component displayed on the display unit and comparing it with information stored on this motor vehicle component on the mobile handheld device or the server unit. According to an advantageous development of the invention, however, it is provided that the information on the tool suitable for machining the motor vehicle component is stored in the database, the suitable tool is selected based on the identified motor vehicle component using the evaluation unit, and the information is transmitted to the mobile handheld device for display on the display unit. The information on a suitable tool type, e.g.of a pressing tool are preferably linked to the electronic images of the motor vehicle components stored in the database, so that after the motor vehicle component has been identified by the evaluation unit, only the appropriate tool size and / or a suitable insert for the tool is selected. Because the information for a suitable tool is also stored in the server unit's database and is preferably linked to the stored electronic images of the motor vehicle components, a particularly fast and reliable selection of the appropriate tool is enabled.After selection by the evaluation unit, the information on the suitable tool is recorded via the transmitting and receiving unit of the mobile handheld device and displayed on the display unit for the workshop employee, so that in order to select a tool suitable for machining the motor vehicle component, the workshop employee only needs to create an electronic image of the motor vehicle component using the mobile handheld device.

[0017] The processing operation, e.g., a drawing or pressing operation, can be controlled, for example, by means of a control unit arranged on the hand-held pulling and pressing device and connected to the drive unit. For this purpose, the control unit is preferably designed to control the drawing and pressing operations and / or to archive the drawing and pressing operations. For example, the control unit can be used to set the required pulling or pressing forces particularly easily, so that the drawing and pressing operations can be carried out particularly reliably. The control unit can also be designed to archive the drawing and pressing operations performed, so that the work carried out can be reliably documented.

[0018] The control unit is particularly preferably connected to a sensor unit for monitoring the drawing and pressing processes. The sensor unit can be configured to monitor the adjustment path, the drawing or pressing forces, the torque, or the like required for the execution of the work processes and their successful completion.

[0019] According to an advantageous development of the invention, it is further provided that the hand-held pulling and pushing device for processing the motor vehicle component is controlled by means of the control unit, wherein the control unit, via a communication unit of the hand-held pulling and pushing device, retrieves a program stored in the database of the server unit or on the mobile hand-held device for the suitable tool via the mobile hand-held device. The control unit is provided, for example, with a display that allows the workshop employee to operate the hand-held pulling and pushing device independently of the mobile hand-held device. The control unit is connected to the communication unit, for example, via a cable or preferably wirelessly, e.g.via Bluetooth or via a WLAN connection within the repair shop to the mobile handset and / or via suitable wireless transmission means as described above to the central database of the server unit.

[0020] Preferably, the program is stored in the server unit and linked to the electronic images and / or the information on the suitable tool. The program stored in the server unit is particularly preferably transferred to the mobile handheld device and / or the communication unit of the handheld push-pull device along with the information on the identified motor vehicle component and / or the information on the suitable tool. To control the operating process, the program is executed, for example, on the mobile handheld device, so that the operating process is controlled via a permanent connection between the mobile handheld device and the communication unit and the control unit.The communication unit preferably has sufficient memory for at least one, preferably several programs, so that a program stored for a suitable tool is transferred directly from the server unit or indirectly via the mobile handheld device to the memory of the communication unit before the start of the machining process and is stored there at least for the duration of the program execution. This can counteract errors caused by connection interruptions. Particularly preferably, the program transmitted from the server unit to the mobile handheld device can be adapted by the workshop employee before transmission to the communication unit, so that, for example, a torque different from the program can be set for the electric motor or alternative actual tensile or compressive forces can be defined.

[0021] Using the programs stored in the database for various tools, the appropriate control program for the appropriate tool can be automatically transferred to the mobile handset and / or the communication unit of the handheld push-pull device. The manual adjustment option of the transferred program on the mobile handset still allows the workshop employee to make individual changes for specific repairs.

[0022] The design of the identification of the motor vehicle component performed in the evaluation unit can, in principle, be implemented in any desired manner, whereby various methods for object recognition can be applied. According to an advantageous development of the invention, for the identification of the motor vehicle component in the mobile handset or in the evaluation unit, the shape type of the motor vehicle component and / or at least one object identifier of a license plate arranged on the motor vehicle component to be identified is determined by automatically capturing the shape of the electronic image.

[0023] In the case of the intended use of the method for repairing a crimp connection in the automotive sector, for example, the shape type represents the external shape of the cable and / or the crimp connection. When determining the geometric shape of the cable or a crimp contact, its diameter, width, length and / or height as well as the shape of a sleeve of the crimp contact can be determined. The determined object characteristics can then be compared with the object characteristics of the electrical images of the automotive components stored in the database. In addition to or as an alternative to pattern recognition based on the shape type of the automotive component, the further developed method provides for an object identification of the automotive component to be identified to be determined during or before the electronic image is created.An object identifier can be specific features of the motor vehicle component to be identified that are independent of its shape, such as special markings, embossing, and color design, as well as labels or the like applied to the surface. Furthermore, the object identifier is preferably formed by a coding arranged on the motor vehicle component. In addition to a two-dimensional code, such as a barcode or QR code, this can also be a three-dimensional code that has protruding elevations, e.g., in the form of dots or bars, and which are particularly advantageously provided with reflective coatings, so that this object identifier can be particularly reliably recognized during the creation of the electronic image.

[0024] In particular, with a combined recording of the shape type and the object identification, the identification of the motor vehicle component to be identified can be carried out particularly reliably and quickly within the evaluation unit by comparing it with the motor vehicle components stored in the database, since misidentification can be reduced by an increasing number of matching features.

[0025] When selecting a suitable tool, it is important not only to choose the right tool type but also the right tool size. For example, the tool size for a tool type can be determined by the workshop employee manually measuring a characteristic dimension of the motor vehicle component, e.g., in the case of a cable, its diameter, and entering this data into the mobile handheld device. However, according to an advantageous development of the invention, when creating the electronic image, the size of the motor vehicle component to be identified is determined using a sensor unit of the mobile handheld device. The sensor unit is designed, for example, as a distance sensor or a motion sensor. Furthermore, the sensor unit can be designed as a LIDAR.The size of the motor vehicle component to be identified can also be determined during automatic shape detection using several interacting sensor units on the mobile handheld device. When creating the electronic image, the size of the motor vehicle component to be identified is determined using the sensor unit and transmitted to the server unit with the electronic image for identification of the motor vehicle component. To select the appropriate tool, the determined size of the motor vehicle component is preferentially taken into account in the evaluation unit, so that information about a suitable tool of the appropriate tool type and size is transmitted to the mobile handheld device for representation on the display unit. By detecting the size of the motor vehicle component using the sensor unit on the mobile handheld device, the risk of incorrect tool selection can be further reduced.

[0026] According to an advantageous development of the invention, the mobile handheld device is connected to the vehicle before the motor vehicle component is repaired, vehicle data is read out using the mobile handheld device, and a processing history of the identified motor vehicle component to be processed is displayed on the display unit based on the vehicle data. The mobile handheld device is preferably connected to the vehicle via an on-board diagnostic access (OBD) using a cable connection or wirelessly, e.g., via Bluetooth. Vehicle data is understood to mean information that is usually read out for repairing a vehicle, e.g., the vehicle type, error messages, or the vehicle's repair history. The processing history of motor vehicle components that have already been repaired, e.g., the motor vehicle component identified using the mobile handheld device, is stored in the vehicle's repair history.

[0027] According to an advantageous development of the invention, it is provided that in order to initialize the machining process of the motor vehicle component by means of the hand-held pulling and pushing device, two switching elements arranged on the pulling and pushing device are actuated simultaneously. In this case, simultaneous is understood to mean that both switching elements are actuated, for example by the workshop employee, at the same time. For this purpose, the switching elements are preferably connected to the control unit. A first switching element is arranged, for example, on a housing body of the hand-held pulling and pushing device. A second switching element is also arranged, for example, on the housing body or, for example, in the case of a riveting tool, preferably on the rivet bracket.

[0028] Actuating just one of the switching elements is not sufficient to initialize the machining process. Particularly preferably, a visual error message is shown on the display of the hand-held pull and push device if only one of the switching elements is actuated. Alternatively or additionally, an error message is transmitted to the mobile handset via the communication unit connected to the control unit and displayed visually on the display unit and / or audiovisually in conjunction with a loudspeaker of the mobile handset. By simultaneously actuating both switching elements, the machining process for repairing the identified motor vehicle component is initialized and preferably the program retrieved from the server unit and / or the mobile handset is executed for the suitable tool selected and arranged on the tool holder.By requiring the activation of two switching elements to initiate the machining process, unwanted initialization of the machining process, for example, due to the carelessness of the workshop employee, can be advantageously counteracted. This ensures that the machining process only begins after the identification of the motor vehicle component and the selection and arrangement of the appropriate tool.

[0029] The system for carrying out the method according to the invention comprises, in addition to the hand-held pulling and pushing device, the mobile handset with a camera unit, a display unit and a transmitting and receiving unit for wireless data transmission of information to a server unit.

[0030] The screw drive comprises a threaded spindle connected to the electric motor and rotatably mounted on a housing body, as well as a threaded nut rotatably mounted on the threaded spindle and non-rotatably mounted on the housing body via a bearing unit. The coupling unit is connected to the threaded nut in such a way that both tensile and compressive forces resulting from the direction of movement of the threaded spindle and the resulting linear adjustment of the threaded nut are reliably transmitted from the threaded nut to the tool holder via the coupling unit.

[0031] In addition, the system is particularly advantageously connected to a server unit that a database with stored images of the motor vehicle components to be identified, information on tools and programs for controlling the hand-held pulling and pushing device and an evaluation unit for identifying the motor vehicle component in the server unit by comparing the image to be transmitted with the images stored in the database and for selecting a suitable tool has.

[0032] The system has at least two different tools, e.g. a pulling tool and a pressing tool. The pressing tool is designed, for example, as a rivet punch, which is used in conjunction with a rivet bracket arranged on the pressing device to set rivets. The pressing tool is also designed, for example, for pressing pipes and / or pipe connections. Furthermore, the pressing tool is designed, for example, as a crimping punch, which is used in conjunction with a crimping die arranged on the pressing device to produce a crimp connection. When used as a pulling device, a suitable clamping device for a blind rivet shank or other means for transmitting tensile forces is arranged on the tool holder. Alternatively or additionally, corresponding pulling tools are arranged on the tool holder, wherein the pulling tools have, for example, clamping means by means of which the tensile forces can then be transmitted.

[0033] A system designed in this way enables the user, using only the mobile handheld device, for example in a workshop, to select a suitable tool for processing and / or repairing a motor vehicle component. This can be done directly on the vehicle in a motor vehicle workshop, for example, without the need to remove it. The mobile handheld device is characterized by its high flexibility and ease of use. The data of the motor vehicle component to be identified is sent as an electronic image directly from the handheld device to the server unit, which can be located locally in the company or at a central location with which the handheld device communicates, for example via a mobile phone connection or a WLAN connection.

[0034] The system's handheld device is primarily designed for manual input of information. This allows the user, for example, to individually adapt the program transmitted to the mobile device for the appropriate tool.

[0035] The mobile handheld device is particularly preferably a tablet or a smartphone. The use of a smartphone is characterized by the fact that these devices typically already have a display unit, a camera unit, and a motion sensor or a distance sensor, so that the creation of the electronic image with the size detection of the motor vehicle component can then be carried out using a program application (app) running on the mobile device. During the creation of the electronic image, the app can, for example, display frame lines or application instructions on the display unit of the mobile device.

[0036] The app can also establish a link to an IT system, which then allows the selected tool to be easily reserved directly via the smartphone for future machining and / or repair work. Preferably, the handheld pull-and-push device can be controlled by the workshop employee using the app in conjunction with the smartphone via voice and / or gesture control. Data exchange between the handheld pull-and-push device and the mobile handset preferably takes place between the communication unit of the handheld pull-and-push device and the transmitting and receiving unit of the mobile handset.

[0037] The system preferably has a plurality of pulling and pressing tools with interchangeable inserts. The inserts have, for example, different component holders, in particular for motor vehicle components. A component holder is a free area of ​​the insert for arranging the motor vehicle component to be processed with the pulling and pressing device. For example, the component holders differ in type and size due to different geometries, e.g. a cylindrical geometry for holding a cable, a pipe or a strut. Different inserts for common cable diameters can be arranged on a pressing tool designed as a crimping die. In addition, the crimping die can preferably be combined with different crimping dies for producing different crimp connections, e.g. a C-crimp or an F-crimp.

[0038] The wide range of different drawing and pressing tools enables a broad range of applications for this handheld pulling and pushing device. The inserts ensure the use of a suitable tool for processing, particularly for repairing, various automotive components, thanks to their broad coverage of different geometries of different or similar automotive components.

[0039] An embodiment of the invention is explained below with reference to the drawings. In the drawings: Fig. 1 is a schematic representation of a system for carrying out a method for using a hand-held pulling and pushing device for repairing motor vehicle components.

[0040] A system 1 for carrying out a method for using a hand-held pulling and pushing device 2 for repairing motor vehicle components 3 is described in Fig. 1shown schematically. The system 1 comprises, in addition to the hand-held pulling and pushing device 2, a mobile handset designed as a smartphone 4 and a plurality of pulling and pressing tools. Fig.1 An example of a pressing tool in the form of a rivet punch 5 in conjunction with a rivet bracket 6 is shown.

[0041] The handheld pulling and pushing device 2 has a drive unit 9 with an electric motor 8 powered by a battery 7 and a screw drive 10 connected to the electric motor 8 for transmitting pulling and pushing forces resulting from the direction of rotation of the electric motor 8 to a coupling unit 11. Furthermore, the pulling and pushing device 2 has a tool holder 12 connected to the coupling unit 11. The pulling and pushing forces can be transmitted to the tool holder 12 via the coupling unit 11.

[0042] The hand-held pull and push device 2 also includes a control unit 13 and a sensor unit connected to the control unit 13, designed as a rotation sensor, for detecting the torque of the electric motor 8. The control unit 13 is connected to a communication unit 15 for data exchange with the smartphone 4.

[0043] The smartphone 4 has a display unit in the form of an electronic display 16 for displaying information and a transmitting and receiving unit 17a, 17b for wirelessly transmitting information to a server unit 18. Furthermore, the smartphone 4 has a camera unit for creating an electronic image of a motor vehicle component 3 to be identified, as well as a distance sensor for determining the size of the motor vehicle component 3 when creating the electronic image.

[0044] The server unit 18 has a database 19 with stored images of motor vehicle components 3, information on tools 5, and programs for controlling the hand-held pulling and pushing device 2. Furthermore, the server unit 18 has an evaluation unit 20 for identifying the motor vehicle component 3 in the server unit 18.

[0045] To use the handheld pull and push device 2 to repair a motor vehicle component in the form of a rivet 3 shown here as an example, the rivet 3 is first identified using the smartphone 4. To do this, a user creates an electronic image of the rivet 3 using the camera unit of the smartphone 4. The distance sensor of the smartphone 4 determines the size of the rivet 3 when creating the electronic image.

[0046] The electronic image created in the smartphone 4 is transmitted to the server unit 18 via a wireless connection, e.g., a mobile phone connection, along with the determined size of the rivet 3. The data transmission 17a, 17b can take place from the smartphone 4 to the server unit 18 and vice versa. Within the server unit 18, the electronic image is analyzed within the evaluation unit 20 and, for example, as part of a shape detection process—in this case, the edge shape of the rivet 3—is compared with the electronic images of rivets 3 stored in the database 19.

[0047] Information on tool types in the form of rivet punches suitable for processing different rivets is linked to the electronic images of the rivets stored in the database 19, so that after the rivet 3 has been identified by the evaluation unit 20, the appropriate size of the rivet punch is determined based on the determined size of the rivet 3. In addition, a program for controlling the hand-held pulling and pushing device 2 is stored in the database for the suitable rivet punch 5. For this purpose, the program is retrieved from the server unit 18 via the transmitting and receiving unit of the smartphone 4, together with the information on the identified rivet 3 and the rivet punch 5 suitable for processing the rivet 3.The program is forwarded to the communication unit 15 connected to the control unit 13 and the information on the identified rivet 3 and the rivet punch 5 suitable for processing the rivet 3 is displayed on the electronic display 16 of the smartphone 4.

[0048] The user, e.g., a workshop employee, places the rivet punch 5 matching the information displayed on the smartphone 4 on the tool holder 12 of the hand-held pull-and-push device 2. The machining process then begins, in which the workshop employee attaches the rivet 3 to a body part using the hand-held pull-and-push device 2. The control unit 13 controls the machining process by executing the program retrieved from the server unit 18 in response to the signals from the rotary encoder.

[0049] The scope of the present invention is given by the claims and is not limited by the features explained in the description or shown in the figures. List of reference symbols

[0050] 1System 2Handheld pull and push device 3Vehicle component / rivet 4Smartphone 5Tool / rivet punch 6Rivet clamp 7Battery 8Electric motor 9Drive unit 10Screw drive 11Coupling unit 12Tool holder 13Control unit 15Communication unit 16Display unit / electronic display 17a, 17bWireless data transmission 18Server unit 19Database 20Evaluation unit

Claims

1. Method of using a handheldable pulling and compressing device for the repair of motor vehicle components, having - a drive unit (9) comprising a battery-operated electric motor (8), - a screw drive (10) connected to the electric motor (8) for transmitting tensile and compressive forces resulting from the direction of rotation of the electric motor (8) to a coupling unit (11), and - a tool holder (12) connected to the coupling unit (11), with the steps - identifying a motor vehicle component (3) to be machined by means of a mobile handheld device (4) comprising a display unit (16) and a transmitting and receiving unit for wireless data transmission of information to a server unit (18); - selecting a tool (5) suitable for machining the identified motor vehicle component (3) by means of the mobile handheld device (4) and / or the server unit (18); - displaying information about the appropriate tool (5) on the display unit (16) of the mobile handheld device (4); - arranging the appropriate tool (5) on the tool holder (12) of the handheldable pulling and compressing device (2); - machining the motor vehicle component (3) by means of the handheldable pulling and compressing device (2).

2. Method according to claim 1, characterized in that, for identification of the motor vehicle component - an electronic image of the motor vehicle component (3) to be identified is created with a camera unit of the mobile handheld device (4), - the electronic image is transmitted to an evaluation unit (20) of the server unit (18) via the transmitting and receiving unit for identifying the motor vehicle component (3) in the server unit (18) by comparison with images of motor vehicle components to be identified stored in a database (19), and - the information stored in the database (19) for the identified motor vehicle component (3) is transmitted to the handheld device (4) for selection of the suitable tool (5).

3. Method according to claim 1 or 2, characterized in that the information on the tool (5) suitable for machining the motor vehicle component (3) is stored in the database (19), the suitable tool (5) is selected by means of the evaluation unit (20) on the basis of the identified motor vehicle component (3), and the information is transmitted to the mobile handheld device (4) for display on the display unit (16).

4. Method according to one or more of the preceding claims, characterized in that the handheldable pulling and compressing device (2) for machining the motor vehicle component (3) is controlled by means of a control unit (13), the control unit (13) calling up a program stored in the database (19) of the server unit (18) or on the mobile handheld device (4) for the suitable tool (5) via a communication unit (15) of the handheldable pulling and compressing device (2) via the mobile handheld device (4).

5. Method according to one or more of the preceding claims, characterized in that, in order to identify the motor vehicle component (3) in the mobile handheld device (4) or in the evaluation unit (20), the shape type of the motor vehicle component (3) and / or at least one object marking of a label arranged on the motor vehicle component (3) to be identified is determined by automatic shape detection of the electronic image.

6. Method according to one or more of the preceding claims, characterized in that during the creation of the electronic image, the size of the motor vehicle component (3) to be identified is determined by means of a sensor unit of the mobile handheld device (4).

7. Method according to one or more of the preceding claims, characterized in that the mobile handheld device (4) is connected to the vehicle before the repair of the motor vehicle component (3), vehicle data is read out by means of the mobile handheld device (4), and a machining history of the motor vehicle component (3) identified and to be machined is displayed on the display unit (16) based on the vehicle data.

8. Method according to one or more of the preceding claims, characterized in that two switching elements arranged on the pulling and compressing device (2) are actuated simultaneously in order to initialize the machining operation of the motor vehicle component (3) by means of the handheldable pulling and compressing device (2).

9. System for carrying out a method of using a handheldable pulling and compressing device for the repair of motor vehicle components, according to any one of claims 1 - 8, comprising - a handheldable pulling and compressing device (2) comprising a drive unit (9) having a battery-operated electric motor (8), a screw drive (10) connected to the electric motor (8) for transmitting tensile and compressive forces resulting from the direction of rotation of the electric motor (8) to a coupling unit (11), and a tool holder connected to the coupling unit (11), - a mobile handheld device (4) with a camera unit, a display unit (16) and a transmitting and receiving unit for wireless data transmission of information to a server unit (18), and - at least two different tools (5).

10. System according to claim 9, characterized by a plurality of pulling and compressing tools (5) with exchangeable inserts.