Method for using a handheld pulling and pushing device for repairing motor vehicle components

Abstract

Method for using a handheld pulling and pushing device for repairing motor vehicle components, comprising: a drive unit (9) having a battery-operated electric motor (8); a threaded 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), comprising the steps of: identifying a motor vehicle component (3) to be processed by means of a mobile handheld device (4) with a display unit (16) and a transmit and receive unit for wireless data transmission of information to a server unit (18); and selecting a tool (5) suitable for processing 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); - Positioning the appropriate tool (5) on the tool holder (12) of the handheld pulling and pushing device (2); - Machining the motor vehicle component (3) using the handheld pulling and pushing device (2).;

Description

The invention relates to a method for using a handheld pulling and pushing device for repairing motor vehicle components and to a system for carrying out the method. Handheld pulling devices, i.e., devices that can be used mobilized by one person, such as handheld riveting tools for setting blind rivet elements like blind rivets and blind rivet nuts, which have a drive unit with an electrically driven threaded drive, are known in various embodiments from the prior art. DE 10 2016 116879 A1, for example, discloses a riveting adapter for a hydraulic riveting device operated under tension and / or pressure. DE 10 2019 114 975 B4 discloses a hydraulic tool unit with a pressure intensifier. US 2021 / 0397155 A1 discloses a portable, handheld, and battery-operated hydraulic tool. DE 10 2014 217 568 A1 discloses the arrangement and a method for monitoring the position of a hand tool within a working area.A method and a tool that guide an operator during use are known from DE 10 2015 215 666 A1. Furthermore, there are also electric pressing devices that, likewise using a threaded drive, convert the rotary motion generated by an electric motor into a linear motion of the pressing tool, for example, to perform punching processes or to set self-piercing rivets. For instance, DE 10 2018 124 646 A1 discloses a hand tool for forming and / or separating plastic or metal workpieces. WO 02 / 102555 A1 teaches a pressing tool with a clamping jaw held in a receptacle by means of a bolt. The riveting and pressing devices described above are used, for example, in workshops, particularly automotive repair shops, for repair work on vehicle bodies, defective systems, equipment, devices, or the like. The difficulty in repairing defective automotive components, especially defective body parts such as rivets or defective vehicle electronic components, e.g., crimped cables, lies in the fact that, due to the large number of different vehicles and vehicle variants, a large number of different automotive components are used. This diversity poses a significant challenge in selecting a suitable tool for the handheld pulling and pushing device to repair the automotive component, since automotive components, especially of the same type, often differ only slightly, namely in just a few characteristics.For example, EP 3 528 187 A1 discloses a method and a system for identifying an object and providing information about the identified object on a mobile handheld device. DE 10 2021 131 294 A1 also discloses a handheld pulling and pushing device. Even for experts, selecting the appropriate tool presents a significant challenge, one fraught with a high risk of error. An incorrect selection of the component to be replaced then leads to longer downtimes and higher costs. Based on this, the invention aims to provide a method for using a handheld pulling and pushing device for repairing motor vehicle components, as well as a system for carrying out the method, which enables a quick and reliable selection of a suitable tool in a simple manner. The invention solves the problem by means of a method with the features of claim 1 and a system with the features of claim 9. Advantageous further developments are specified in the dependent claims. The handheld pulling and pushing device comprises a drive unit with a battery-powered electric motor and a threaded drive connected to the electric motor for transmitting the pulling and pushing forces resulting from the electric motor's direction of rotation to a coupling unit. Furthermore, the pulling and pushing device includes a tool holder connected to the coupling unit. In the inventive method for using the handheld pulling and pushing device for repairing motor vehicle components, the following process steps are carried out: - Identifying a motor vehicle component to be processed using a mobile handheld device with a display unit and a transmitter and receiver unit for wireless data transmission of information to a server unit; - Selecting a tool suitable for processing the identified motor vehicle component using the mobile handheld device and / or the server unit; - Displaying information about the suitable tool on the display unit of the mobile handheld device; - Positioning the suitable tool on the tool holder of the handheld pulling and pushing device; - Processing the motor vehicle component using the handheld pulling and pushing device. The method according to the invention is characterized in that it enables a 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 showing information and a transmitter and receiver unit for wirelessly transmitting information to a server unit. Particularly when used in repair shops, especially automotive repair shops, this method can facilitate the selection of the appropriate tool for the handheld pulling and pushing device for the workshop employee in a simple, convenient, and reliable manner. By selecting a suitable tool for the identified automotive component using the mobile handheld device and / or the server unit, the time required to set up the handheld pulling and pushing device, as well as the risk of selecting the wrong tool, is reduced. This can reduce repair time and thus the costs of processing and / or repairing the automotive component. The defective vehicle component, such as a cable, pipe, rivet, or crimp connection, is identified by the workshop employee using the mobile handheld device. Based on the identified component, the appropriate tool for working on the component is selected using the mobile handheld device and / or the server unit communicating with the mobile handheld device via the transmitter and receiver unit. Information about the appropriate tool is displayed on the mobile handheld device's display unit, for example, in the form of written, visual, and / or audiovisual instructions, such as images or videos. The workshop employee then positions the tool matching the information displayed on the mobile handheld device at the tool holder of the handheld pulling and pushing device.The processing procedure then begins, in which the workshop employee processes the motor vehicle component using the handheld pulling and pushing device, in particular repairing it. The workshop employee can retrieve the appropriate tool from a toolbox and / or storage area, if available, or reserve it. Particularly advantageous is the display unit, which also shows reservation options alongside the information provided. Even more beneficial is the ability for the workshop employee to reserve the desired tool directly on the display unit, for example, in a computer system.This makes it particularly convenient for the workshop employee to select a suitable tool for processing and / or repairing a defective motor vehicle component, to arrange the appropriate tool on the handheld pulling and pushing device, or, if necessary, to reserve it for use, 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 carried out within a very short time. The identification of the vehicle component to be processed can, in principle, be carried out in any way. For example, the workshop employee can use the mobile handheld device to display images of vehicle components to be identified, stored in a database on the server unit, on the display unit of the mobile handheld device and compare them with the vehicle component. However, according to an advantageous embodiment of the invention, an electronic image of the vehicle component to be identified is created using a camera unit of the mobile handheld device. The electronic image is transmitted via the transmitting and receiving unit to an evaluation unit of the server unit for identification of the vehicle component by comparison with images of vehicle components to be identified stored in a database.The information stored in the database for the identified vehicle component, used to select the appropriate tool, is transmitted to the handheld device. To create the electronic image, the workshop employee points the handheld device with the camera unit at the vehicle component to be identified. After the employee has created the electronic image with the camera unit of the mobile device, it is transmitted to the server unit via the transmitter and receiver. Within the server unit, the evaluation unit then compares the electronic image with the images stored in the server's database. Data relating to a matching vehicle component stored in the database, such as the product name of the identified component, is then transmitted from the server unit back to the mobile device to select the appropriate tool. Wireless data transmission occurs, for example, via Bluetooth, a mobile network, or a Wi-Fi connection within the repair shop.The information about the identified motor vehicle component is preferably displayed on the display unit of the mobile handheld device, usually an electronic display. The use of the mobile handheld device enables simple and reliable identification of automotive components. By linking the database to a central server, the user always has access to up-to-date information through centralized updates of the linked data. Therefore, unlike identification processes that only take place locally on the mobile handheld device, it is not necessary to regularly update the information stored on the device itself. The selection of a suitable tool can, in principle, be carried out in any way using the mobile handheld device and / or the server unit. For example, a suitable tool can be selected by manually entering the product name of the identified automotive component displayed on the display unit and comparing it with information stored on the mobile handheld device or the server unit for this automotive component. However, according to an advantageous embodiment of the invention, the information on the tool suitable for machining the automotive component is stored in the database. Based on the identified automotive component, the suitable tool is selected 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.,The information for a press tool is preferably linked to the electronic images of the automotive components stored in the database, so that after the automotive component has been identified by the evaluation unit, only the appropriate tool size and / or a suitable insert for the tool needs to be selected. Because the information for a suitable tool is also stored in the server unit's database and preferably linked to the stored electronic images of the automotive components, a particularly fast and reliable selection of the appropriate tool is enabled.After selection by the evaluation unit, information on the appropriate tool is captured via the transmitter and receiver unit of the mobile handheld device and displayed on the display unit for the workshop employee, so that to select a tool suitable for processing the motor vehicle component, the workshop employee only needs to create an electronic image of the motor vehicle component using the mobile handheld device. The machining process, e.g., a drawing or pressing operation, can be controlled, for example, by means of a control unit arranged on the handheld pulling and pressing device and connected to the drive unit. For this purpose, the control unit is preferably designed to control and / or archive the drawing and pressing operations. This allows, for example, the respective pulling or pressing forces to be set particularly easily via the control unit, so that the drawing and pressing operations can be carried out with exceptional reliability. The control unit can also be designed to archive the completed drawing and pressing operations, thus enabling reliable documentation of the work performed. The control unit is preferably connected to a sensor unit for monitoring the drawing and pressing processes. The sensor unit can be configured to monitor the adjustment range, the drawing or pressing forces, the torque, or similar parameters required for carrying out the work processes and their successful completion. According to an advantageous embodiment of the invention, it is further provided that the handheld pulling and pushing device for processing the motor vehicle component is controlled by the control unit, wherein the control unit retrieves a program stored in the database of the server unit or on the mobile handheld device for the appropriate tool via a communication unit of the handheld pulling and pushing device. The control unit is, for example, equipped with a display, which enables the workshop employee to operate the handheld pulling and pushing device independently of the mobile handheld device. The control unit is connected to the communication unit, for example, via a cable or preferably wirelessly, e.g.connected via Bluetooth or via a WLAN connection within the repair shop to the mobile handheld device and / or via suitable wireless transmission means described above to the central database of the server unit. Preferably, the program is stored in the server unit and linked to the electronic images and / or information about the appropriate tool. The program stored in the server unit is particularly preferably transferred, along with the information about the identified automotive component and / or the information about the appropriate tool, to the mobile handheld device and / or the communication unit of the handheld pulling and pushing device. 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 continuous connection between the mobile handheld device and the communication unit and the control unit.Preferably, the communication unit has sufficient memory for at least one, and 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 stored there, at least for the duration of the program's execution. This prevents errors caused by connection interruptions. Particularly preferably, the program transmitted from the server unit to the mobile handheld device can be adjusted by the workshop operator before being transmitted to the communication unit, so that, for example, a torque for the electric motor that deviates from the program can be set, or alternative tensile or compressive forces can be defined. The programs stored in the database for various tools allow the appropriate control program to be automatically transferred to the mobile handheld device and / or the communication unit of the handheld pulling and pushing device. The manual setting option for the transferred program on the mobile handheld device still allows the workshop employee to make individual adjustments for specific repairs. The design of the identification of the motor vehicle component carried out in the evaluation unit can, in principle, be implemented in any way, whereby various object recognition methods can be applied. According to an advantageous embodiment of the invention, it is provided that, for the identification of the motor vehicle component in the mobile handheld device or in the evaluation unit, the shape type of the motor vehicle component and / or at least one object identifier of a marking arranged on the motor vehicle component to be identified is determined by automatic shape recognition of the electronic image. In the case of the intended use of the method for repairing a crimp connection in the automotive sector, for example, the form 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 crimp contact sleeve, can be determined. The determined object characteristics can then be compared with the object characteristics of the electrical representations of the automotive components stored in the database. In addition to or as an alternative to pattern recognition via the form type of the automotive component, the enhanced method provides that an object identifier of the automotive component to be identified is determined during or before the creation of the electronic representation.Object identification can consist of specific characteristics of the vehicle component to be identified, independent of its shape. Examples include special markings, embossing, and color schemes, as well as labels or similar features affixed to the surface. Furthermore, object identification is preferably achieved through a code applied to the vehicle component. This code can be a two-dimensional code, such as a barcode or QR code, or a three-dimensional code with raised features, such as dots or bars, which are advantageously coated with reflective material to ensure highly reliable recognition of the object identification during the creation of the electronic image. Particularly when the shape type and object identification are combined, the identification of the motor vehicle component to be identified can be carried out particularly reliably and quickly within the evaluation unit by comparison with the motor vehicle components stored in the database, since the risk of misidentification can be reduced by an increasing number of matching characteristics. In addition to choosing the appropriate tool type, selecting the appropriate tool size is also crucial for choosing a suitable tool. For example, the tool size for a given tool type can be determined by the workshop employee manually measuring a characteristic dimension of the vehicle component, such as the diameter of a cable, and entering this measurement into a handheld device. However, according to an advantageous embodiment of the invention, the size of the vehicle component to be identified is determined by a sensor unit in the handheld device when creating the electronic image. This sensor unit can be configured, for example, as a distance sensor or a motion sensor. Furthermore, the sensor unit can be configured as a LiDAR scanner.The size of the automotive component to be identified can also be determined using multiple interacting sensor units of the mobile handheld device during automatic shape recognition. When creating the electronic image, the size of the automotive component is determined by the sensor unit and transmitted to the server unit for identification of the automotive component within the electronic image. For selecting the appropriate tool, the determined size of the automotive component is given priority 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 display on the screen. By recognizing the size of the automotive component using the sensor unit of the mobile handheld device, the risk of incorrect tool selection can be further reduced. According to an advantageous embodiment of the invention, the mobile handheld device is connected to the vehicle before the repair of the vehicle component. Vehicle data is then read out using the mobile handheld device, and a processing history of the identified vehicle component to be repaired is displayed on the display unit based on this vehicle data. The connection between the mobile handheld device and the vehicle is preferably established via an on-board diagnostics (OBD) port using a cable connection or wirelessly, e.g., via Bluetooth. Vehicle data refers to standard information typically read out for vehicle repair, such as the vehicle type, error messages, or the vehicle's repair history. The vehicle's repair history contains the processing history of previously repaired vehicle components, for example, the vehicle component identified using the mobile handheld device. According to an advantageous embodiment of the invention, two switching elements arranged on the handheld pull-and-push device are actuated simultaneously to initiate the machining process of the automotive component. "Simultaneously" here means 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, for example, arranged on a housing body of the handheld pull-and-push device. A second switching element is, for example, also arranged on the housing body or, for example, in the case of a riveting tool, preferably on the riveting jaw. Actuating only one of the switching elements is insufficient to initiate the machining process. Preferably, a visual error message is displayed on the screen of the handheld pull-and-push device if only one of the switching elements is actuated. Alternatively or additionally, an error message is transmitted to the mobile handheld device via the communication unit connected to the control unit and displayed visually on the display unit and / or audibly via a speaker on the mobile handheld device. Simultaneous actuation of both switching elements initiates the machining process for repairing the identified automotive component and preferably executes the program retrieved from the server unit and / or the mobile handheld device for the selected, suitable tool mounted on the tool holder.By requiring the activation of two switching elements to initiate the machining process, an undesired initiation 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 takes place after the identification of the vehicle component and the selection and positioning of the appropriate tool have been completed. The system for carrying out the method according to the invention comprises, in addition to the handheld pulling and pushing device, the mobile handheld device with a camera unit, a display unit and a transmitter and receiver unit for wireless data transmission of information to a server unit. The screw drive comprises a threaded spindle connected to the electric motor and rotatably mounted on a housing body, and a threaded nut rotatably mounted on the threaded spindle and fixed to 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 consequent linear adjustment of the threaded nut, are reliably transmitted from the threaded nut to the tool holder via the coupling unit. Furthermore, the system is particularly advantageously connected to a server unit which has a database with stored images of the vehicle components to be identified, information on tools and programs for controlling the handheld pulling and pushing device, and an evaluation unit for identifying the 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. The system comprises at least two different tools, e.g., a drawing tool and a pressing tool. The pressing tool is, for example, designed as a rivet setter, which, in conjunction with a rivet shank mounted on the pressure device, is used to set rivets. The pressing tool is also designed, for example, for pressing pipes and / or pipe connections. Furthermore, the pressing tool is, for example, designed as a crimping die, which, in conjunction with a crimping die mounted on the pressure device, is used to create a crimp connection. When used as a pulling device, a suitable clamping device for a blind rivet shank or other means of transmitting tensile forces is, for example, arranged on the tool holder. Alternatively or additionally, corresponding drawing tools are, for example, arranged on the tool holder, wherein the drawing tools have, for example, clamping means by means of which the tensile forces can then be transmitted. This system, designed in this way, allows the user, for example in a workshop, to select a suitable tool for processing and / or repairing a vehicle component using only the mobile handheld device. This can be done directly on the vehicle, for example in a workshop, without the need for disassembly. The mobile handheld device is characterized by its high flexibility and ease of use. The data of the 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 workshop or in a central location, with the handheld device communicating via a mobile network or Wi-Fi connection. The system's handheld device is primarily designed for manual information input. This allows, for example, the user to individually customize the program transferred to the mobile handheld device for the appropriate tool. The preferred mobile device is a tablet or smartphone. Using a smartphone is advantageous because these devices typically already have a display, camera, and either a motion or distance sensor. This allows the creation of the electronic model, including size recognition of the vehicle component, to be performed using a program application (app) running on the mobile device. During the creation of the electronic model, the app can, for example, display frame lines or application instructions on the mobile device's display. The app can also establish a link to a computer system, allowing the selected tool to be easily reserved directly via smartphone for future machining and / or repair work. Preferably, the handheld pulling and pushing device can be controlled by the workshop employee using voice and / or gesture control in conjunction with the app and smartphone. Data exchange between the handheld pulling and pushing device and the mobile device preferably takes place between the communication unit of the handheld pulling and pushing device and the transmitting and receiving unit of the mobile device. Preferably, the system comprises multiple drawing and pressing tools with interchangeable inserts. These inserts feature, for example, different component receptacles, particularly for automotive components. A component receptacle is a free area within the insert for arranging the automotive component to be processed by the drawing and pressing device. For instance, the component receptacles differ in type and size due to different geometries, such as a cylindrical geometry for accommodating a cable, a pipe, or a strut. Different inserts for common cable diameters can be arranged on a pressing tool designed as a crimp die. Additionally, the crimping die is preferably combinable with various crimping dies for producing different crimp connections, such as C-crimps or F-crimps. The wide variety of drawing and pressing tools allows for a broad range of applications for the handheld pulling and pushing device. The inserts, thanks to their broad coverage of different geometries for various or identical automotive components, ensure that a suitable tool can be used for machining, and especially repairing, different automotive parts. An embodiment of the invention is explained below with reference to the drawings. In the drawings, Fig. 1 shows a schematic representation of a system for carrying out a method for using a handheld pulling and pushing device for repairing motor vehicle components. A system 1 for carrying out a method for using a handheld pulling and pushing device 2 for repairing motor vehicle components 3 is schematically shown in Fig. 1. In addition to the handheld pulling and pushing device 2, the system 1 comprises a mobile handheld device designed as a smartphone 4 and a plurality of pulling and pressing tools. Fig. 1 shows, by way of example, a pressing tool in the form of a rivet setter 5 in conjunction with a rivet mandrel 6. The handheld pulling and pushing device 2 comprises a drive unit 9 with an electric motor 8 powered by a battery 7 and a threaded 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. Furthermore, the pulling and pushing device 2 has a tool holder 12 connected to the coupling unit 11. The tensile and compressive forces can be transmitted to the tool holder 12 via the coupling unit 11. The handheld pulling and pushing device 2 is further equipped with a control unit 13 and a sensor unit designed as a rotary encoder, connected to the control unit 13, 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. The smartphone 4 has a display unit in the form of an electronic display 16 for displaying information and a transmit and receive unit for wireless data transmission 17a, 17b of information to a server unit 18. In addition, the smartphone 4 has a camera unit for creating an electronic image of a vehicle component 3 to be identified, as well as a distance sensor for determining the size of the vehicle component 3 when creating the electronic image. Server unit 18 has a database 19 containing images of motor vehicle components 3, information on tools 5, and programs for controlling the handheld pulling and pushing device 2. Server unit 18 also has an evaluation unit 20 for identifying the motor vehicle component 3 within the server unit 18. For the use of the handheld pulling and pushing device 2 for repairing 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. For this purpose, a user creates an electronic image of the rivet 3 with the camera unit of the smartphone 4. The size of the rivet 3 is determined by the distance sensor of the smartphone 4 during the creation of the electronic image. The electronic image created in the smartphone 4 is transmitted via a wireless connection, e.g., a mobile network connection, along with the determined dimensions of the rivet 3, to the server unit 18. Data transmission 17a, 17b can occur between the smartphone 4 and the server unit 18. Within the server unit 18, the electronic image is analyzed within the evaluation unit 20 and, for example, compared with the electronic images of rivets 3 stored in the database 19 as part of a shape analysis, in this case, the edge shape of the rivet 3. Information on suitable tool types for processing different rivets, in the form of rivet setters, is linked to the electronic images of the rivets stored in database 19. This allows the evaluation unit 20 to determine the appropriate rivet setter size based on the identified size of the rivet 3 after the rivet 3 has been identified. Additionally, the database contains a program for controlling the handheld pulling and pushing device 2 for the appropriate rivet setter 5. This program, along with the information on the identified rivet 3 and the rivet setter 5 suitable for processing the rivet 3, is retrieved from server unit 18 via the smartphone's transmitter and receiver unit 4.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 setter 5 suitable for processing the rivet 3 is displayed on the electronic display 16 of the smartphone 4. The user, e.g., a workshop employee, positions the rivet setter 5, matching the information displayed on the smartphone 4, on the tool holder 12 of the handheld pulling and pushing device 2. The machining process then begins, in which the workshop employee fastens the rivet 3 to a body panel using the handheld pulling and pushing device 2. The control unit 13 controls the machining process by executing the program retrieved from the server unit 18, depending on the signals from the rotary encoder. All features described in connection with individual embodiments of the invention can be provided in different combinations for the method of using the handheld pulling and pushing device 2 for repairing motor vehicle components 3 and / or the system 1 for carrying out the method in order to realize their advantageous effects, even if these have been described for different embodiments. The scope of protection of the present invention is defined by the claims and is not limited by the features explained in the description or shown in the figures. Reference symbol list 1 System 2 Handheld pulling and pushing device 3 Automotive component / rivet 4 Smartphone 5 Tool / rivet setter 6 Rivet mandrel 7 Battery 8 Electric motor 9 Drive unit 10 Threaded drive 11 Coupling unit 12 Tool holder 13 Control unit 15 Communication unit 16 Display unit / electronic display 17a, 17b Wireless data transmission 18 Server unit 19 Database 20 Evaluation unit

Claims

Method for using a handheld pulling and pushing device for repairing motor vehicle components, comprising: a drive unit (9) having a battery-operated electric motor (8); a threaded 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), comprising the steps of: identifying a motor vehicle component (3) to be processed by means of a mobile handheld device (4) with a display unit (16) and a transmit and receive unit for wireless data transmission of information to a server unit (18); and selecting a tool (5) suitable for processing 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); - Positioning the appropriate tool (5) on the tool holder (12) of the handheld pulling and pushing device (2); - Machining the motor vehicle component (3) using the handheld pulling and pushing device (2).; Method according to claim 1, characterized in that, for the 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 via the transmitting and receiving unit for the identification of 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) to an evaluation unit (20) of the server unit (18), and the information stored in the database (19) for the identified motor vehicle component (3) for the selection of the suitable tool (5) is transmitted to the handheld device (4). 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 on the basis of the identified motor vehicle component (3) by means of the evaluation unit (20) and the information is transferred to the mobile handheld device (4) for display on the display unit (16). Method according to one or more of the preceding claims, characterized in that the handheld pulling and pushing device (2) for processing the motor vehicle component (3) is controlled by means of a control unit (13), wherein the control unit (13) retrieves 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 handheld pulling and pushing device (2) via the mobile handheld device (4). Method according to one or more of the preceding claims, characterized in that, for the identification of 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 identifier of a mark arranged on the motor vehicle component (3) to be identified is determined by an automatic shape recognition of the electronic image. Method according to one or more of the preceding claims, characterized in that, when creating 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). 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, based on the vehicle data, a processing history of the identified and to be processed motor vehicle component (3) is displayed on the display unit (16). Method according to one or more of the preceding claims, characterized in that, to initiate the machining process of the motor vehicle component (3) by means of the handheld pull and push device (2), two switching elements arranged on the pull and push device (2) are actuated simultaneously. System for carrying out a method for using a handheld pulling and pushing device for repairing motor vehicle components according to one of claims 1-8, comprising: a handheld pulling and pushing device (2) with a drive unit (9) having a battery-operated electric motor (8), a threaded 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), 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 transmitter and receiver unit for wireless data transmission of information to a server unit (18), and at least two different tools (5). System according to claim 9, characterized by a plurality of drawing and pressing tools (5) with interchangeable inserts.

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