• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Portable tool, in particular screw tool (1) with a tool head (2) for machining a workpiece, with a drive device (4) for driving the work head (2) and with a single control device (6) for controlling the drive device, wherein at least one working parameter (P1 ) of the drive device (4) is variable. According to the invention, the tool has a signal recording device (10) in signal communication (10) which is in communication with the control device (6) at least occasionally, these signals being characteristic of at least one operating parameter (P1) and wherein the control device (6) is designed in response to a signal registered by the signal recording device (10) determines said at least one operating parameter (P1). (Figure 2)
    公开号:SE538138C2
    申请号:SE1151174
    申请日:2011-12-09
    公开日:2016-03-15
    发明作者:Martin Eckert
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    Portable tool and method for performing workflows with this tool Description The present invention relates to a portable tool and in particular to a portable screwdriver. Such screw tools are often used in recent manufacturing procedures. These are usually battery-powered portable screwdrivers, which in particular communicate with a central unit, for example a central computer. Usually, these professional screw tools, unlike consumables, have a number of work programs for assembling different screws. In this case, for example, maximum torques, maximum speeds, maximum angles of rotation and the like can be determined.
    For this purpose, these tools usually have a control device in which a plurality of such work programs are stored. In the prior art, the selection of a proper screw program is usually done manually or via a fieldbus. In this case, it is also possible for the configuration and screwing parameters to be transmitted via a usage software. However, this means an increased error rate when manually selecting the screw program. If the configuration is sent via single-use software, a PC with one-use software is required to configure and store the program.
    The object which forms the basis of the present invention is thus to facilitate the adaptation of certain screwing parameters or screwing programs subsequent work processes and screw processes, respectively. This is achieved according to the invention by the features of the independent claims. Advantageous embodiments and further developments are apparent from the dependent claims.
    A portable tool according to the invention, and in particular a screw tool, has a tool head for machining a workpiece, and in particular for mounting screws in this workpiece. Furthermore, the tool has a drive device for driving the tool head (or a part of the tool head, for example a drive shaft) and a single control device for controlling the drive device. Furthermore, at least one operating parameter of the drive device is variable.
    According to the invention, the tool has at least one signal recording device at least occasionally with the control device in signal connection for wireless reception of signals, these signals being characteristic of said at least one working parameter and the control device being designed so that it determines at least one signal registered by the signal recording device.
    It is thus proposed that said at least one working parameter is not made available by single control software, but is determined by means of said signal recording device. Advantageously, the tool configures itself via such a loaded configuration code and in particular a configuration bar code and executes screwing programs as it has obtained via this code. The appropriate code or bar code can then be entered by a usage software.
    Advantageously, the control device is designed so that it can select several machining programs for machining the workpiece, and particularly preferably the working parameter is characteristic of at least one of these work programs. Advantageously, each work program has a specific set of work parameters.
    In an advantageous embodiment, the signal recording device has an optical recording device and in particular a bar code reader. In this way, said bar code can be read in and on the basis of this bar code said at least one parameter, preferably a plurality of working parameters, is set. Advantageously, this is in particular a bar code characteristic of the present screw process. In this case, it is possible to load the screw program belonging to the workpiece in question directly before screwing in, thereby reducing the risk of the wrong screw program being used. In this case, it would also be possible, after the screw process in question, also to transfer the corresponding information to a central unit, in order in this way to document which screw program has been used for which screw. A further advantage of the method according to the invention is that a device or an accumulator-driven screwdriver can be commissioned quickly without further operating programs.
    In a further advantageous embodiment, the tool has a processor device, which determines the working parameter from the signal recorded by the signal recording device. In this way it would be possible, for example, to read a specific code from a bar code, then compare this code with codes stored in a storage device and in this way determine the correct working parameter. However, it would also be possible to determine the existing working parameter directly from the bar code.
    In a further advantageous embodiment, the tool has an accumulator for its power supply.
    In a further advantageous embodiment, the working parameter is selected from a group working parameters, which contains a driving torque for the driving device, a speed of the driving device, a rotation angle for a screw course, a maximum rotation angle, an electric current, an electric voltage, combinations thereof or the like. Advantageously, several signals or a signal which is characteristic of several of said operating parameters are registered with the signal recording device. Particularly preferably, a set of working parameters is read in, which in their entirety constitute the above-mentioned screw program.
    Furthermore, in the case of working parameters, it can also be a process of a first quantity depending on another quantity, for example a screw angle-dependent torque process. Working parameters can thus also refer to so-called screw curves, which describe the screw process.
    In a further advantageous embodiment, the device has a transmitting device and / or a receiving device, for communicating with a central unit. In this way, for example, the loaded parameters can also be transmitted to this central unit, so that it, for example, carries out a plausibility check. Furthermore, as mentioned above, the working parameters used for a specific screw process can actually be transmitted to this central unit for documentation.
    In this way, it can be verified, for example, whether the correct screw program has been used for a specific screw. If it is established in this way that a screw has been mounted with an incorrect screw program, this can also be documented, so that the exchange of information concerning screw processes is possible.
    Advantageously, in the case of a drive device, it is an electric motor and preferably a single-servo motor. In a further advantageous design, the tool has at least one sensor sensor device for detecting a working parameter, such as a rotation sensor or current or voltage measuring devices or temperature sensors. In addition, a comparison device can also be provided, which compares the quantities registered by a servo device with the working parameters.
    The present invention further relates to a method for carrying out workpiece machining processes and in particular screw processes, wherein the method is carried out with a portable tool and wherein the tool comprises a tool head for machining the workpiece, a drive device for driving the work head and at least a part of the control device and a control device. wherein at least one operating parameter of the drive device is variable.
    According to the invention, the tool registers wirelessly by means of a signal recording device a signal which is characteristic of the working parameter and the control device sets the working parameter in response to this signal.
    With regard to the method, it is thus also proposed that a signal be registered, for example the bar code reader, which is either characteristic of the drive parameter or transmits data, from which the working parameter can be determined, and the control device sets or said said parameters in response to this signal.
    Advantageously, the registration of the signal takes place immediately before the execution of a work sequence with the set working parameter. In this way, the risk of incorrect screw processes can be reduced.
    In a further advantageous method, a workflow with the working parameter is permitted only when a time period between the registration of the signal and the beginning of the workflow has not exceeded a predetermined maximum value. In this way it is ensured that a screw process with a certain working parameter is only possible when this working parameter was set or changed in time close to the existing screw process. In a further advantageous method, the signal from a bar code is determined. This means that the tool - as mentioned above - advantageously has a bar code reader, which reads bar codes in order in this way to determine the operating parameters in question.
    Additional advantages and embodiments will be apparent from the accompanying drawings.
    Therein: figure 1 shows a schematic representation of a portable tool, figure 2 a block diagram-like representation of a device according to the invention.
    Figure 1 shows a schematic representation of a portable tool 1. This portable tool then has a tool head 2 with a drive shaft 12, on which a screw member (not shown) is arranged or can be fastened. The tool 1 is here designed as an angle screwdriver, however, it would also be possible to design the tool head rectilinearly or to the left on the tool 1 in figure 1. The reference numeral 24 identifies a switch device, such as a button, with which the tool can be activated. In a switch area 26, multi-switch devices can be arranged, for example for activating a reader / scanner (not shown). The reference numeral 18 identifies an accumulator which serves to drive the tool.
    There is also a pistol version of the screwdriver.
    Figure 2 shows a block diagram-like representation of the device according to the invention. The reference numeral 10 identifies a signal recording device, such as a reader, which serves to read a bar code. The signal recorded by the output signal recording device 10 is passed on to a control device 6, this control device 6 serving to control the drive device 4, in which case it is, for example, a servomotor.
    The reference numeral 22 identifies a transmission / reception device which can wirelessly transmit signals to a central unit 20, for example a computer. In addition, the control device 6 can also have a comparison device 14, which compares the operating parameters P1 transmitted from the signal recording device 10 with, for example, stored reference values in order to indicate a suitable work program for driving the driving device 4. The signal recording device 10 can then be activated by switching device 26 (compare Figure 1). A proper bar code can, for example, be arranged on the workpiece to be processed.
    In connection with the device according to the invention, various sources of error are conceivable. For example, it is conceivable that users load or scan an incorrect parameter set. This can lead to a screw being pulled in with incorrect parameters and an incorrect set of parameters, respectively. This in turn can lead to the screw connection becoming identifiable incorrectly and thus the error immediately can be identified. However, it is also conceivable that the screw connection is established, but with, for example, incorrect parameters, for example an incorrect tightening torque. This can result in such screw joints becoming too loose, too hard or not sufficiently durable.
    It would then be possible for each individual screw connection and each group of similar screw connections to have their own set of parameters. In this way, it would be possible, after each reading of this parameter, the tool was only released for a certain time. In this context, the control device 6 could also have a time measuring device 16, which after each reading of a set of parameters was activated and caused that an operation of the drive device 4 was only made possible for a certain time.
    An additional source of error is that the user loads a specific set of parameters and screws in too many or too few screw connections with it. Here too, it would be possible for separate screw connections to be identifiable and thus immediately identifiable. However, it would also be possible here that some screw connections are established with an incorrect tightening torque or incorrect parameters or that loose screws are present. This fault could be eliminated by each individual screw point having a readable parameter set. In this way, coordination errors can be reduced.
    In a further possible method, it would also be conceivable for the user to first read in a total screw connection sequence on the workpiece and with this process also read in information, or determine via the control device 6, which produces how many screw connections should take place on the workpiece and, where applicable, what parameter sets be used. During assembly, the user can be guided through the processing via instructions, which can for example be delivered via a display device 30. Advantageously, the tool according to the invention thus also has an instruction device 30, which preferably gives the user instructions concerning a specific work process.
    An acoustic operator line is also conceivable (for example via Bluetooth headsets).
    An additional possible source of error is that the user reads a certain set of parameters, but then screws together a workpiece that does not belong to this set of parameters. In this case, an incorrect coordination of the screw result relative to the workpiece takes place.
    A possible solution for this source of error is that the screwdriver and the tool 1, respectively, are only released in a specific spatial area, which is located in the vicinity of the workpiece which is being created. For this purpose, the tool can, for example, have a single-position recording device, which determines the position of the tool in the space. It would also be possible, as mentioned above, for only a certain time for a workflow or the operation of the drive device to be released after loading, which is advantageous when, for example, the data set to be loaded is in the vicinity of the workpiece to be machined.
    In the embodiments shown in the figures, the working parameters are read in via a single-bar code reader. However, other possibilities for the wireless data transmission would also be possible, such as loading an RFID tag, transmission of radio signals or infrared signals and the like.
    The loaded parameters can also be forwarded to the central unit 20, in order in this way also to document the individual completed screw processes for a long time.
    In a further embodiment, the tool could also have a single alarm triggering device, which announces to the user when the user has the concept that with a specific work program he carries out a screw sequence which is not suitable for this work program.
    The applicant considers all the features shown in the application documents to be essential to the invention, unless they individually or in combination are new relatively known techniques.
    List of reference numerals 1 tool 2 tool head 4 drive device 6 control device 10 signal recording device 12 drive shaft 14 comparison device 16 time measuring device 18 accumulator 20 central unit 22 transmission / reception device 24 switch device 26 switch area 30 display device P1 working parameter
    权利要求:
    Claims (10)
    [1]
    A portable screwdriver (1) having a tool head (2) for machining a workpiece, a drive device (4) for driving the working head (2) and a signal recording device (10) for wirelessly receiving a signal characteristic of at least one working parameter (P1) for the drive device (4), a control device (6) for determining the at least one working parameter (P1). In response to a signal registered by the signal recording device (10) and disturbing the drive device (4) with the at least one working parameter (P1) the control device (6) is designed so that a workflow with the working parameter (P1) is only permitted when a time period between the registration of the signal and the beginning of the workflow does not exceed a predetermined maximum value, and / or when the screwdriver (1) is arranged in a specific spatial area for the workpiece to be machined and / or the screwdriver (1) has a display device (30), for dispensing instructions based on a total screw connection process loaded on the workpiece, to guide the user through the machining of the workpiece with the screwdriver.
    [2]
    Portable screwdriver according to Claim 1, characterized in that the signal recording device (10) has a bar code reader or is designed for reading an RFID tag or from radio or infrared signals.
    [3]
    Portable screwdriver according to at least one of the preceding claims, characterized in that the screwdriver has a processor device (12), which determines the operating parameter from the signal registered by the signal recording device.
    [4]
    Portable screwdriver according to at least one of the preceding claims, characterized in that the screwdriver (1) has an accumulator (18) for its power supply.
    [5]
    Portable screwdriver according to at least one of the preceding claims, characterized in that the working parameter (P1) is a screw curve which describes the screwing process with the screwdriver (1) or is selected from a group of working parameters which contains a driving torque for the drive device, a speed for the drive device. an angle of rotation for a screw thread, an electric current, an electric voltage, combinations thereof.
    [6]
    Portable screwdriver according to at least one of the preceding claims, characterized in that the screwdriver has a transmitting device and / or a receiving device, for transmitting the information of a screw sequence performed with the screwdriver to a central unit (20).
    [7]
    Portable screwdriver according to at least one of the preceding claims, characterized in that the screwdriver has a switch device (26) for activating the signal detection device (10).
    [8]
    Method for carrying out machining operations in the form of unscrewing operations with a portable screwdriver, the screwdriver (1) comprising a tool head (2) for machining a workpiece, a drive device (4) displacing the work head (2), a signal recording device (10) for wireless reception of a signal characteristic of at least one operating parameter (P1) of the drive device (4), the control device (6) determining the at least one operating parameter (P1) in response to a signal registered by the signal recording device (10) and the control drive device (4) with the at least one determined working parameter (P1) and wherein a workflow with the working parameter (P1) is only allowed when a time period between the registration of the signal and the beginning of the workflow does not exceed a predetermined maximum value, and / or when the screwdriver (1) is arranged in a predetermined area for the workpiece to be machined and / or wherein a display device (30) shown on the screwdriver (1), delivery instructions based on a total screw connection process which is loaded on the workpiece, to guide a user of the screwdriver (1) through the machining of the workpiece (1). ß
    [9]
    Method according to Claim 8, characterized in that the registration of the signal takes place immediately before the execution of a work sequence with the set working parameter (P1).
    [10]
    Method according to claim 8, characterized in that the signal is determined from a bar code, or from an RFID tag or from radio or infrared signals.
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    申请号 | 申请日 | 专利标题
    DE102010056524.5A|DE102010056524B4|2010-12-29|2010-12-29|Portable tool and method for performing operations with this tool|
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