Tool kit for cutting, deinsulating and / or crimping electrical conductors

Abstract

The invention relates to a tool set for cutting, deinsulating and / or crimping electrical conductors (L), having a hand-held automatic device (1) which can be manually operated by a user and which has a tool interface (11) and a drive (12), and at least one tool head (2, 2a, 2b, 2c, 2d) which is configured for carrying out a function, can be connected to the hand-held automatic device (1) via the tool interface (11) and can be driven in the connected position via the drive (12). It is provided here that the hand-held automatic device (1) has a force determinator (13) for determining an adjustment force which is caused by the drive (12) on at least one tool head (2, 2a, 2b, 2c, 2d) which is connected to the hand-held automatic device (1).

Description

Technical Field

[0001] The present invention relates to a tool kit for cutting, deinsulating and / or crimping electrical conductors as described in the preamble of claim 1.

[0002] This tool kit has a handheld automatic device and at least one tool head. The handheld automatic device can be manually operated by the user and has a tool interface and an electric drive. At least one tool head is configured to perform functions, can be connected to the handheld automatic device (1) via the tool interface (11), and can be driven by the drive (12) in the connected position. Background Technology

[0003] In circuit wiring or conductor mass production, the following steps are typically performed to prepare conductors: cutting them to appropriate lengths, removing insulation, and crimping. Here, crimping means clamping the conductor to the electrical connector. It is known that hand-held tools, operated manually, electrically, or pneumatically, can be used for these steps. Furthermore, electrically or pneumatically operated benchtop equipment and devices for fully automated conductor mass production are also known.

[0004] Furthermore, good quality of electrical connections established using the tool and good ergonomics of the tool are desirable. For handheld tools, this especially means that the user requires minimal force to operate the tool and that the handheld tool is lightweight. Additionally, the tool should be flexible in use; that is, for example, it should be able to be used for different cross-sections of conductors and electrical connectors. It should also provide high process reliability. That is, for example, it should allow for maintaining high quality in cutting, deinsulation, and crimping, regardless of the user's skill level. Furthermore, the cost of the tool should be low, and it should generate as little waste as possible in consumables (such as electrical conductors and connectors). Moreover, short processing time and ease of operation per conductor are desirable.

[0005] Several hand tools are known from the prior art, suitable for cutting and removing insulation. Some hand tools are also known for crimping. Electrically driven hand tools, such as those described in DE 10 2013 107 217 A1, which are manually operated and, if necessary, supported by a motor drive, are used in particularly strenuous or energy-intensive processes, such as cutting or crimping wires with large cross-sections. Hand tools are also known that can be used in three steps: cutting, removing insulation, and crimping. Hand tools can be adapted to different applications in part by interchangeable tool heads.

[0006] A crimping pliers is known from DE 199 32 962B4, wherein the crimping quality is monitored by the crimping force. Faults can be identified by recording force-stroke variations and comparing them with preset values ​​determined through crimping tests.

[0007] However, in handheld tools designed to perform different functions, users must estimate the adjustment force for each function, or use the same adjustment force for each function, but this may come with the risk of performing these functions incorrectly. Summary of the Invention

[0008] Therefore, the object of the present invention is to provide a tool kit for cutting, deinsulating and crimping electrical conductors, having a handheld automatic device and at least one tool head, which provides high process reliability.

[0009] This objective is achieved by means of a subject matter having the features of claim 1.

[0010] Therefore, the handheld automatic device has a force determiner for determining the adjustment force induced by the actuator on at least one tool head connected to the handheld automatic device.

[0011] By determining the adjusting force through a force determiner, which is then actuated by an actuator on tool heads connected to a handheld automation device, process reliability can be improved, at least during cutting, insulation removal, and crimping. Other functions, such as conductor torsion or sheath removal, can also be considered. To achieve these functions, multiple tool heads can be designed, and process reliability can be improved when these functions are implemented via a handheld automation device.

[0012] In one embodiment, a first tool head among a plurality of tool heads is configured to perform a first function. Conversely, a second tool head among the plurality of tool heads is configured to perform a second function different from the first function. Each tool head can be connected to the handheld automation device via a tool interface and can be driven by a driver in the connected position. Therefore, in this configuration, different tool heads configured to perform different functions can be detachably connected to the handheld automation device via tool interfaces. Here, each tool head can be connected to the tool interface to perform the function assigned to that tool head. This tool head can be replaced with another tool head so that the handheld automation device can be operated with another tool head and thus perform another function.

[0013] Instead of replacing tool heads with tool heads of different functions, tool heads of the same type can also be used, for example, in the event of damage, to replace the tool head and thus repair the tool. However, in any case, the tool head is replaceable and is detachably connected to the handheld automatic device via a tool interface.

[0014] In one design, a first tool head is constructed for performing a cutting function, a second tool head for performing an insulation removal function, and a third tool head for performing a crimping function. Additional tool heads can be constructed to perform one or more of the following functions: cutting, insulation removal, twisting, sheath removal, and crimping of conductors. For example, this additional tool head can be designed to cut and twist a conductor. Specifically, this additional tool head can be designed to cut, remove insulation, twist, remove sheaths, and crimp a conductor. Multiple such additional tool heads can be provided if necessary. Therefore, the tool kit can be flexibly used for multiple work steps, different electrical connectors, and different electrical conductors.

[0015] Crimping a conductor may involve pressing a conductor against an electrical connector. The electrical connector may, for example, have a wiring sleeve, rotating contacts, cable connectors, a B-type crimp, or other electrical contacts. Here, the electrical conductor may be the core wire of a cable. In particular, the electrical conductor may have multiple stranded wires.

[0016] Each of the multiple tool heads can be connected to the handheld automatic device via a tool interface. Each tool head can thus be attached to the tool interface. The tool interface may in particular have a snap-lock or rotary lock, which allows the tool head to be secured to the handheld automatic device.

[0017] In one design, at least one tool head has a carrier. The carrier can be configured to move the tool head to perform a function. The actuator may have a piston for transmitting adjusting force. The carrier may be coupled to the piston to transmit the adjusting force. The handheld automation device can obtain energy from an accumulator, such as a battery, to operate the electric actuator. In one embodiment, the handheld automation device is battery-powered.

[0018] The actuator can generate regulating force using energy from an accumulator and transmit this force to the tool head via a transmission mechanism. For example, the actuator can have a spindle drive. The spindle drive converts the rotary motion of the actuator's motor into linear motion. This linear motion can be transmitted via the spindle drive, for example, to a piston that can reciprocate. The tool head, particularly its drive mechanism, can be coupled to the piston, so that the regulating force is transmitted to the tool head via the piston. The compact structure of a handheld automaton helps to achieve a lower weight.

[0019] The actuator can be controlled by a control unit. The control unit may, for example, have a circuit board housed within the handheld automatic device. The control unit can be coupled to a force determiner, which can transmit a determined adjustment force, for example, for analysis and / or recording, to the control unit. The control unit can also be coupled to the actuator, allowing it to control the actuator according to user needs. For this purpose, the user can, for example, manipulate a button that triggers the operating process. During one operating cycle, the piston can move back and forth once. The length of the adjustment stroke and the maximum applied adjustment force can be matched to the corresponding application by adjusting the motor current. The control unit can be configured to adjust the motor current. Therefore, the mechanism in the tool head does not necessarily need to be designed so that all tool heads in a plurality of tool heads operate with the same maximum force.

[0020] In one design, the handheld automation device includes an identification device for recognizing a corresponding connected tool head. The identification device can be configured to identify the connected tool head. This can involve different types of tool heads or tool heads used to perform different functions. Therefore, the handheld automation device can identify which tool head is being used.

[0021] In one design, the identification device is configured to identify the attached tool head via mechanical, magnetic, electrical, and / or optical signals. Mechanical signals can be generated, for example, by mechanical encoding of the tool head, such as by pins, the presence of which can be detected by buttons or sensors on a handheld automaton. Electrical signals can be generated, for example, by inductive or capacitive sensors or reed contacts. Magnetic signals can be generated, for example, by a magnet disposed on the tool head, the magnetic field strength of which can be measured using a Hall sensor disposed on the handheld automaton. Optical signals can be generated, for example, by a grating that interrupts the tool head in a predetermined manner. Optical identification can also be achieved by optically reading information about the tool head. For example, the tool head can be identified by the identification device based on its shape or by a barcode or binary code disposed on the tool head. In principle, no additional electronic devices are required in the tool head for identification.

[0022] In one design, the identification device may also be configured as an RFID reader to read the RFID tag (so-called label) on at least one tool head.

[0023] In one embodiment, multiple additional electronic devices are arranged on the tool head, allowing the tool head to be identified by the identification device. For example, the tool head can be identified wirelessly via RFID or NFC. Tool head identification can also be performed via a direct electrical connection or a cable connection. Here, electrical signals can be transmitted through the physical structure between the tool head and the handheld automation device. For example, tool head identification can be performed via electrical contact, such as wire contact.

[0024] The control unit can be coupled to the identification device. Information about the identified tool head can be transmitted from the identification device to the control unit. The control unit can be configured to predict the adjustment force used to perform the function using the identified tool head, based on the identified tool head. In particular, the control unit can provide a reference value or reference curve for the adjustment force used to perform the function using the identified tool head.

[0025] In one embodiment, the control unit presets parameters, such as adjustment force. The adjustment force can be preset by the control unit, for example, by presetting the motor current driving the electric actuator. The control unit can also preset the actuator speed. The actuator speed can be determined by a rotary encoder. The rotary encoder, in particular, can measure the piston speed.

[0026] In the case of an electric driver with a stepper motor, the speed can be determined by counting the number of steps. The control unit can also preset the torque of the driver. Specifically, the adjustment force can be preset using the driver torque. Furthermore, the control unit can alternatively or additionally preset the adjustment stroke, along which the tool head can adjust when performing the corresponding function. The adjustment stroke can provide a series of adjustment positions along which the tool head can be adjusted when performing the corresponding function. In particular, the control unit can preset the adjustment force, driver speed, driver torque, and / or adjustment stroke according to the connected tool head, along which the tool head can adjust when performing the corresponding function. For example, the control unit can preset a different adjustment stroke for a first tool head used to perform a first function than for a second tool head used to perform a second function. Therefore, a handheld automatic device can be adapted to adjust parameters such as motor speed, motor torque, adjustment force to be input to the tool head, and / or adjustment stroke according to the connected tool head.

[0027] In one embodiment, the handheld automatic device has a stroke determiner for determining the adjustment position along the adjustment stroke. This adjustment position can be the instantaneous position of the tool head when performing a corresponding function. For example, the adjustment position can be the angle of the tool head's opening into which a conductor can be inserted.

[0028] With the stroke determiner and force determiner, the handheld automation device can be configured to determine the adjustment force and adjustment position during the performance of functions for processing, such as cutting electrical conductors. Additionally, the handheld automation device can be configured to record the adjustment force and adjustment stroke. To record the adjustment stroke and adjustment force, the control unit can have a storage device in which the adjustment force and adjustment stroke, and especially the numerical pairs consisting of the adjustment position and adjustment force, can be stored.

[0029] In one design, the control unit is configured to compare a numerical pair consisting of adjustment position and adjustment force with a reference value, and / or compare an adjustment stroke-adjustment force curve with at least one reference curve, in order to monitor the correct execution of the corresponding function. Comparing the numerical pair with the reference value and / or comparing the adjustment stroke-adjustment force curve with at least one reference curve may include calculating the difference between the value and the reference value and / or at least one reference curve, respectively. Monitoring the correct execution of the corresponding function may include evaluating the magnitude of the difference between the value and the reference value and / or at least one reference curve, respectively.

[0030] By monitoring the correct execution of corresponding functions, different faults can be identified for each function. When cutting electrical conductors, faults in the execution of the function, such as damaged or worn tools, can be identified based on incorrect cutting force. Incorrect cutting force can cause deviations in the adjustment force from the reference value and / or at least one reference curve. During insulation removal, a sudden increase in adjustment force may occur when the tool head blade, such as an insulation removal blade, contacts the stranded wire of the conductor. Therefore, by monitoring changes in adjustment force with the adjustment stroke, damage to the stranded wire can be identified and, if necessary, prevented.

[0031] In the case of crimping, at least two scenarios can be considered.

[0032] In the first scenario, after the initial contact between the tool head and the electrical connector to be pressed against the conductor, or during connector deformation, the adjusting force may not increase sufficiently compared to the typical adjusting force-adjusting stroke curve, especially the reference curve, for the tool head used for connection. This can lead to a failure where a conductor with a cross-section too small for the tool head to be connected is inserted into the connector. Similarly, the conductor may be missing strands, or a portion of the stranded wire may not be inserted into the connector.

[0033] In the second scenario, after the initial contact between the tool head and the electrical connector to be pressed against the conductor, or during connector deformation, the adjusting force may increase very rapidly compared to the typical adjusting force-adjustment stroke curve, especially the reference curve, for a connecting tool head, causing the maximum force to be reached after an excessively short adjustment stroke. In this case, the fault may be the use of an incorrect or inappropriate connector. For example, an overly hard material may have been used in the socket. Similarly, the wrong conductor may have been inserted into the connector. For instance, the conductor may have a cross-section that is too large for the connector.

[0034] A handheld automatic device can be configured to display to the user a fault derived from a deviation of a numerical pair and / or an adjustment force-adjustment stroke curve. In one embodiment, the handheld automatic device has a quality display configured to show an indication when the deviation of the numerical pair from a reference value and / or the deviation of the adjustment stroke-adjustment force curve from at least one reference curve exceeds a preset difference. For example, the indication may be the illumination of an LED on the quality display. The quality display may also include a display showing the deviation. The quality display may also indicate the deviation to the user via an audible signal or vibration.

[0035] In one embodiment, the control unit is coupled to the identification device to preset reference values ​​and / or at least one reference curve based on the connected toolhead. The control unit may provide reference values ​​and / or at least one reference curve for each toolhead. Thus, the control unit can provide corresponding matching reference values ​​and / or envelope curves obtained from at least two reference curves for monitoring the execution of functions related to the connected toolhead, based on the connected toolhead.

[0036] In one embodiment, the handheld automation device and / or at least one tool head has a storage device in which reference values ​​and / or at least one reference curve for the respective tool head are stored. The reference values ​​and / or at least one reference curve can be stored in a storage device of the control unit corresponding to an identifier of the tool head, which the control unit can obtain from an identification device. At least one tool head may have an additional storage device in which its identifier is stored. Specifically, the tool head identifier may include identification data, such as an identification number. The reference values ​​and / or at least one reference curve for the respective tool head may also be additionally stored in this additional storage device. Thus, the tool head can be used independently of the handheld automation device that stores the reference values ​​and / or at least one reference curve for the respective tool head. For example, these tool heads can be used on another handheld automation device that provides monitoring of the correct execution of the corresponding function.

[0037] Reference values ​​and / or at least one reference curve may be defined within permissible ranges on a plane defined by the possible values ​​of adjustment force and adjustment position. By determining the reference values ​​and / or at least one reference curve, the permissible range is selected such that if the measured adjustment force and the measured adjustment position are within permissible ranges during the conductor processing, the required quality is ensured to be maintained.

[0038] Reference values ​​and / or at least one reference curve can be preset at the factory, for example. In one design, the control unit is configured to generate additional reference values ​​from a numerical pair consisting of adjustment position and adjustment force, or to generate at least one additional reference curve from an adjustment stroke-adjustment force curve, and to store these in a storage device in addition to the already stored reference values ​​and / or at least one already stored reference curve. Therefore, in addition to the pre-stored reference values ​​and / or pre-stored reference curves, additional reference values ​​and / or reference curves can be stored by the user. Thus, the measured numerical pairs and / or the measured adjustment stroke-adjustment force curves can be converted into reference values ​​and / or reference curves to generate templates for performing functions for the tool head.

[0039] The control unit can be set to preset the adjustment stroke. This can be done based on the connected tool head, or it can be based on a function selected by the user. For example, the tool head can be configured to cut conductors. When the adjustment stroke is shortened, the same tool head can be used to de-insulate the conductor, thus cutting only the insulation instead of completely cutting the conductor.

[0040] In one embodiment, the control unit is designed to preset a shortened adjustment stroke such that the tool head connected to the handheld automatic device, used to perform the insulation removal function, can only partially remove the insulation from the conductor via the preset adjustment stroke, leaving the section of the conductor's insulation jacket separated during insulation removal on the conductor. Therefore, in this embodiment, the control unit shortens the adjustment stroke along the conductor's longitudinal axis. Thus, the separated section of the conductor's insulation jacket is not removed from the conductor but remains at one end of the conductor. The separated section can be used, for example, to twist the conductor or to protect the conductor. Therefore, the handheld automatic device can be adjusted according to the desired application without complexity or automatically adjust itself according to the desired application.

[0041] In one design, the handheld automation device has a data interface through which a computer device can be coupled to the handheld automation device to transfer data between the computer device and the handheld automation device. The data interface may include, for example, a connection via USB, WiFi, or Bluetooth. The control unit, in particular, can exchange data with the computer device through the data interface.

[0042] Through a data interface, data, such as identification data of the tool head used, recorded numerical pairs consisting of adjustment force and adjustment position on the adjustment stroke, reference values, recorded adjustment stroke-adjustment force curves and / or reference curves, can be transmitted to or from a computer device. The data can therefore be transmitted from the computer device to the control unit and from the control unit to the computer device. The control unit may in particular be configured to transmit data stored in a storage device to the computer device. The computing device may be, for example, a computer or mobile device, such as a smartphone or tablet.

[0043] The control unit may be configured to transmit the numerical pairs and / or the recorded adjustment stroke-adjustment force curves, along with the corresponding reference values ​​and / or reference curves, recorded for the connected tool head, to a computer device via a data interface for analysis using software or an app.

[0044] In one design, additional reference values ​​and / or at least one additional reference curve can be transmitted via a data interface for storage in a storage device. The computer device can make the additional reference values ​​and / or at least one additional reference curve accessible to the handheld automation device via the data interface. The additional reference values ​​and / or the at least one additional reference curve may, for example, be recorded, stored, or calculated using another handheld automation device and / or at an earlier point in time. Data received from the computer device can be additionally or alternatively stored in another storage device of the tool head. Similarly, data can be transferred from another storage device of the tool head to the computer device via the data interface.

[0045] The data interface can also transmit information about the total number of work cycles performed using the tool head or handheld automatic device. Based on the number of cycles, potential wear can be inferred, allowing for the generation of warnings regarding wear or maintenance intervals when necessary.

[0046] In one design, the manual / automatic device and / or multiple tool heads each have a storage device capable of storing information about the wear and / or number of times the multiple tool heads have been used to perform a function. For example, the number of times can be used to prevent overloading the handheld automatic device due to excessive number of function executions. This is particularly important in mobile applications of handheld automatic devices and improves process reliability.

[0047] The control device can be configured to preset parameters, such as adjustment stroke-adjustment force curves, based on the wear of the connected toolheads. Therefore, it can be ensured that toolheads requiring higher adjustment forces due to wear do not produce erroneous indications of logarithmic pairs or deviations between the adjustment stroke-adjustment force curve and a reference value or at least one reference curve. Furthermore, due to wear, the user of the handheld automation device can be informed of the maintenance required for the connected toolheads. Wear can scale, for example, with the number of times each toolhead performs its function. Therefore, the number of times can be stored in the storage device of the handheld automation device or in a separate storage device of the toolheads. This number can, for example, include the number of completed (machining) cycles of the toolheads or the number of conductors processed. More specific information about toolhead wear can also be stored if necessary.

[0048] Wear on the tool head causes increased friction when performing its function. Increased friction may necessitate a greater adjustment force. In one design, the control unit controls the driver based on wear and / or the number of times the function is executed. By controlling based on wear and / or the number of times, the increased adjustment force due to wear can be compensated. The number of times can be determined by counting the number of times the function is executed.

[0049] Friction can be determined, for example, by reference operation of the tool head without inserting a conductor. A method for calibrating handheld automatic devices can be used for this purpose.

[0050] In one design, the handheld automation device includes a lighting device that illuminates the tool head being connected. The lighting device can be, for example, an LED, oriented towards the connected tool head. This facilitates the processing of conductors inserted into the tool head even in low-light conditions.

[0051] In a method for calibrating a handheld automatic device for a tool kit, the handheld automatic device can be manually operated by a user. The handheld automatic device has a tool interface and an electrically driven actuator. A tool head is connected to the handheld automatic device via the tool interface and is driven by the actuator in the connected position. In this method, preferably without an electrical conductor placed on the tool head, the tool head is adjusted along an adjustment stroke, and an adjustment force for adjusting the tool head along this adjustment stroke is determined. Adjusting the tool head along the adjustment stroke without a conductor may include a reference run for calibrating the tool head.

[0052] In currently unused tool heads, the adjustment force along the adjustment stroke without a conductor inserted can be the initial baseline value. As the tool head wears more, additional friction may occur, undesirably increasing the adjustment force. Therefore, when adjusting without a conductor inserted, the adjustment force can also be higher than the baseline value. Using the aforementioned calibration, the increased adjustment force obtained by increasing the baseline value can be calculated. This ensures that the adjustment force required for machining the conductor can be accurately determined. Attached Figure Description

[0053] The ideas based on the present invention will now be explained in detail with the aid of embodiments shown in the accompanying drawings. The drawings show:

[0054] Figure 1 A view is shown of an electrical conductor and a handheld automatic device connected to a tool head;

[0055] Figure 2 A schematic diagram of a handheld automated device connected to a computing device is shown;

[0056] Figure 3 A perspective view of a handheld automatic device is shown;

[0057] Figures 4A-4D A view showing tool heads with different functions is provided;

[0058] Figure 5 A graphical view of the adjustment stroke-adjustment force curve is shown;

[0059] Figure 6 A graphical view of three adjustment stroke-adjustment force curves and two reference curves is shown;

[0060] Figure 7 A schematic diagram of a handheld automatic device is shown; and

[0061] Figure 8 It shows according to Figure 7 A schematic diagram of a handheld automatic device, along with a tool head. Detailed Implementation

[0062] Figure 1 A view of a handheld automatic device 1 with an electrically driven actuator 12 is shown. The handheld automatic device 1 has a tool interface 11 on which a tool head 2 is arranged. The tool head 2 is actuated by the electrically driven actuator 12. The handheld automatic device 1 is held by a user's hand H. The user's hand H surrounds the housing 10 of the handheld automatic device 1 in the view shown. For better operability, the housing 10 is ergonomically fitted to the hand H.

[0063] The handheld automatic device 1 is part of a tool kit for cutting, deinsulating, and crimping an electrical conductor L. In the illustrated embodiment, conductor L is a cable with a sheath M. The sheath M covers three core wires, each of which is covered by insulation I. The tool kit may include at least one handheld automatic device 1. In one design, the tool kit includes multiple handheld automatic devices 1, which may differ, for example, in the strength of the electric actuator 12. Furthermore, the tool kit preferably includes multiple different or, if necessary, identical tool heads. Using the tool head 2 shown in the view, the core wires of conductor L are deinsulated, exposing three electrical contacts E. The contacts E are not covered by insulation I.

[0064] The tool head 2, connected to the handheld automatic device 1, is therefore configured for removing insulation. In principle, the tool head 2 can also be configured to cut conductor L. The tool head 2 can also be configured to rotate conductor L, particularly the contact E, especially the stranded wire of the core. The tool head 2 can also be configured to remove the sheath of conductor L, particularly cables. Thus, the tool head 2 can be used to remove the cable sheath M.

[0065] The handheld automatic device 1 has a force determiner 13 for determining the adjustment force induced by the driver 12 on the tool head 2 connected to the handheld automatic device 1. Therefore, the force determiner 13 can be used to determine the adjustment force induced by the driver 12 on the tool head 2. Thus, the force acting on the conductor L is determinable, acting on the conductor L within the range required to perform the function for which the tool head 2 is constructed. In the illustrated embodiment, there is a risk, for example, of damaging the stranded wire when deinsulating the core wire due to cutting too deeply into the insulation portion I. However, since the adjustment force when cutting the insulation portion I is less than the adjustment force when cutting the stranded wire, the force determiner 13 will record an increase in force when the tool head 2 cuts the stranded wire, thereby providing a warning to the user of the tool kit.

[0066] Figure 2 A schematic diagram of a handheld automatic device 1 is shown. The tool head 2 of the handheld automatic device 1 is shown only schematically and is aligned with an electrical conductor L, which is to be processed by the tool head 2. The tool head 2 is connected to the handheld automatic device 1 via a tool interface 11. For example, the tool interface 11 may have a snap-fit ​​or rotary lock.

[0067] The tool head 2 is connected to an electrically driven actuator 12, which is mounted on the handheld automatic device 1, via a tool interface 11. The actuator 12 includes a motor 121, which drives the tool head 2 via a transmission 122. The motor 121 may be, for example, an electric motor. Through the transmission 122, the motor 121 may, for example, drive a spindle that converts the rotational motion of the motor 121 into linear motion, which the tool head 2 can then adjust. Therefore, the tool head 2 can be driven by the stroke generated by the motor 121.

[0068] The tool head 2 has a carrier 22 that works in conjunction with the driver 12 of the handheld automatic device 1 to adjust the tool head 2. For example, the driver 12 may have a piston 124, to which the carrier 22 can be coupled to transmit the adjusting force. The piston 124 may be reciprocated, for example, by means of a spindle driver.

[0069] Furthermore, the handheld automation device 1 has an identification device 15 for identifying the tool head 2. The identification device 15 is disposed on the tool interface 11, thereby enabling mechanical identification of the tool head 2. For example, the tool head 2 can mechanically interact with the handheld automation device 1, allowing the handheld automation device 1 to identify the tool head 2. In one embodiment, the tool head 2 is identified by mechanical coding. In another embodiment, the identification device 15 is configured to identify the connected tool head 2 via electrical signals. For example, identification can be performed via a direct electrical connection, such as a plug-in connection. The identification device 15 can also be configured to optically identify the tool head 2, for example, by reading a barcode on the connected tool head 2.

[0070] In principle, the tool head 2 can exchange data wirelessly or wiredly with the handheld automation device 1. The data may include identification data for identifying the tool head 2, so that the identification device 15 can identify the tool head 2 by means of the identification data. Additionally or alternatively, for example, the number of times the function of the tool head 2 has been performed can also be read and / or stored in the tool head 2 through data exchange.

[0071] The handheld automatic device 1 includes a storage device 160, in which identification data of the tool head 2 can be stored, for example. Additionally or alternatively, the storage device 160 may store the number of functions performed by the tool head 2 with the identification data. The tool head 2 includes a separate storage device 21, in which the identification of the tool head 2 and, if necessary, the number of functions performed by the tool head 2 can be stored. For example, the storage devices 21 and 160 may store the number of cutting or de-insulation processes performed for a single tool head 2.

[0072] When data such as the number of functions performed is stored in the storage device 160 of the handheld automatic device 1, this data can be transferred to the additional storage device 21 of the tool head 2. This allows the additional handheld automatic device 1 to identify how many times the function of the tool head 2 has been performed when the tool head 2 is used on another handheld automatic device 1. From this, for example, the wear of the tool head 2 or other usage-specific parameters of the tool head 2 can be determined.

[0073] Furthermore, an energy accumulator 18 is provided on the handheld automatic device 1, which provides an energy source for the actuator 12. The actuator 12 and the energy accumulator 18 are arranged in the housing 10. The housing 10 can be configured as a handle.

[0074] To control the drive 12, the handheld automatic device 1 includes a control unit 16. The drive 12 can be controlled using the control unit 16. The control unit 16 can be configured to adjust the speed of the drive 12, particularly the motor speed, and the torque applied by the drive 12 to the connected tool head 2, particularly the motor torque. Two operating devices 17 are provided on the handheld automatic device 1, which can be operated by the user of the handheld automatic device 1. The operating devices 17 are configured as buttons or keys. By operating one of these operating devices 17, the user can use a signal to instruct the control unit 16 to start or stop the drive 12. Through the simple operation using the operating devices 17, ergonomic operation is achieved for the user because high operating forces can be avoided.

[0075] Furthermore, the control unit 16 is connected to the energy storage unit 18. The control unit 16 reads the charging status of the energy storage unit 18. An energy display 104 is provided on the handheld automatic device 1, which can display the charging status of the energy storage unit 18 to the user of the handheld automatic device 1. For example, when the energy storage unit 18 needs to be replaced, the energy display 104 can display the low charging status of the energy storage unit 18 to the user. Additionally, the control unit 16 is coupled to the identification device 15. Currently, the identification device 15 transmits the identifier of the tool head 2 to the control unit 16. The control unit 16 compares the transmitted identifier with a list of tool head identifiers stored in the storage device 160, thereby retrieving the parameters of the tool head 2 stored in conjunction with the identifier of the tool head 2. For example, the control unit 16 can preset the speed of the driver 12, especially the motor speed, and / or the torque of the driver 12, especially the motor torque, according to the connected tool head 2.

[0076] Furthermore, according to the tool head 2, the control unit 16 can preset an adjustment force, which the tool head 2 applies to the conductor L when machining the conductor L. This adjustment force can be adjusted, for example, by the current input to the driver 12 via the accumulator 18. In particular, the adjustment force can be adjustable by the motor current.

[0077] Furthermore, the handheld automatic device 1 has a stroke determiner 14, which is used to determine the adjustment position of the tool head 2. This adjustment position is located on the adjustment stroke, along which the tool head 2 can be adjusted when performing the corresponding function. During cutting, the adjustment stroke may be, for example, the stroke that the blade 20a of the tool head 2 must travel in order to cut the conductor L.

[0078] Control unit 16 is configured to preset the adjustment stroke, along which tool head 2 can be adjusted to perform corresponding functions, such as deinsulating the core wire without damaging the strands. This is particularly important when core wires of different diameters need to be deinsulated using a single tool head. For core wires with larger diameters, the adjustment stroke is smaller than that for core wires with smaller diameters. Therefore, different tool heads can be designed to process conductors L with different diameters. Control unit 16 is configured to preset the adjustment stroke according to the diameter of the conductor L and / or according to the tool head 2 used. Of course, control unit 16 can also be configured to preset the adjustment position according to the connected tool head 2.

[0079] By combining information about the adjusting force determined by the force determiner 13 and the adjusting position of the tool head 2, the control unit 16 can perform analysis to monitor the conformity of the tool head 2 to its intended function. For example, if a tool head 2 unsuitable for machining conductor L is used, the adjusting force and adjusting position may deviate from the reference values ​​associated with the tool head 2 for conductor L. Therefore, the control unit 16 is configured to compare the numerical values ​​consisting of the adjusting position and adjusting force with the reference values. Thus, the control unit can monitor the correct execution of the corresponding function.

[0080] Reference values ​​or reference curves R can be transmitted from computer device S to handheld automation device 1. For communication with computer device S, handheld automation device 1 has a data interface 19 through which computer device S is coupled to handheld automation device 1. Data interface 19 includes a USB-C interface. Handheld automation device 1 is configured to receive reference values ​​from computer device S, particularly for connecting and identifying tool heads, and store them in storage device 160. Similarly, reference values ​​or reference curves R can be obtained by processing conductor L using tool head 2 preset with identification data. Reference curves R here may include an arrangement of reference values. For example, one can consider a scenario where a skilled worker processes a conductor L, the reference values ​​or reference curves R are stored in handheld automation device 1, and an unskilled worker can use the previous worker's reference values ​​or reference curves R to monitor their work when further processing conductor L with the same structure. Reference values ​​and / or reference curves R generated by handheld automation device 1 can be transmitted to computer device S via data interface 19.

[0081] Similarly, a reference curve R can be generated by recording the adjustment stroke-adjustment force curve K during the processing of conductor L and subsequently evaluating the processing quality of conductor L. If the processing quality of conductor L has been evaluated as good, the reference curve R can be generated from the recorded adjustment stroke-adjustment force curve K. An envelope curve or envelope band can be generated from at least two reference curves R, and when a function is subsequently performed, the adjustment stroke-adjustment force curve K should lie within the envelope curve or envelope band. On the one hand, this allows for monitoring the implementation of a function based on a reference value or reference curve R. On the other hand, it also allows for identifying the implemented function or characteristics of the conductor L, such as the cross-section of conductor L, based on the curve of the adjustment force changing with respect to the adjustment stroke during function implementation.

[0082] The handheld automatic device 1 is equipped with a quality display 103 for the processing quality of conductor L. When the value deviates from the reference value, or when the deviation exceeds a preset difference, the quality display 103 can notify the user by means of a signal. For example, the quality display 103 can notify the user of the deviation by means of a red LED light.

[0083] Additionally, a status display 102 for the status of the automatic device is provided on the handheld automatic device 1, which can, for example, show to the user that the handheld automatic device 1 is ready to operate.

[0084] Furthermore, a lighting device 101 is provided on the handheld automatic device 1, which illuminates the tool head 2. The lighting device 101 is provided on the tool head 2 side of the housing 10 of the handheld automatic device 1, thereby illuminating a processing area in which the conductor L can be arranged on the tool head 2.

[0085] Figure 3 An exemplary illustration of a handheld automatic device 1 is shown in a partially cut-away view. The handheld automatic device 1 has a driver 12, which includes a motor 121, a transmission 122, and a spindle 123. The spindle 123 is coupled to a piston 124 (threadedly engaged with the spindle 123 in the form of a spindle nut), and a tool head 2 can be coupled to this piston via a tool interface 11. The rotation generated by the motor 121 via the spindle 123 can be converted into linear motion. The range of linear motion, i.e., the stroke, determines the adjustment stroke of the coupled tool head 2.

[0086] The force used to generate the linear motion of piston 124, i.e., the adjusting force, can be determined by a force determiner 13 disposed on the handheld automatic device 1. The force determiner 13 is coupled to, for example, motor 121, so that the adjusting force can be determined by the motor current. The force determiner 13 may also include a force sensor, such as a strain gauge DMS. It is also conceivable and feasible for the force determiner 13 to include a spring assembly that receives the adjusting force. The adjusting force can then be determined by measuring the deflection of said spring assembly.

[0087] Furthermore, an accumulator 18 is provided on the handheld automatic device 1. The accumulator 18 is arranged parallel to the actuator 12. This allows for a space-saving arrangement of the accumulator 18 and the actuator 12. Moreover, this arrangement of the accumulator 18 parallel to the actuator 12 allows for a simple handle-shaped design of the handheld automatic device 1. The section of the handheld automatic device 1 on which the accumulator 18 is provided can be positioned for placement on the ring finger area of ​​the user's hand. When used correctly, the tool head 2 extends from a region of the handheld automatic device 1 adjacent to the thumb area of ​​the user's hand.

[0088] Furthermore, a control device 17 is provided on the handheld automatic device 1. When used as specified, the control device 17 can be operated by the user's index finger. For this purpose, the control device 17 is arranged between the area where the accumulator 18 is arranged and the tool head 2.

[0089] Furthermore, the handheld automatic device 1 includes a control unit 16, which is coupled to the actuator 12 and the operating device 17, such that operation of the operating device 17 can trigger the actuator 12. Additionally, the control unit 16 is coupled to a force determiner 13, so that the value of the adjusting force determined by the force determiner 13 can be acquired by the control unit 16.

[0090] Figures 4A to 4D The view shows the different tool heads, each configured to perform a different function.

[0091] Figure 4A The first tool head 2a shown is configured to perform a cutting function. For cutting, the first tool head 2a includes two opposing blades 20a, between which the conductor L to be cut can be inserted. The blades 20a can be adjusted to face each other along an adjustable stroke, such that the conductor L is cut when the blades 20a collide with each other.

[0092] Figure 4B The second tool head 2b shown is designed to perform the insulation removal function. Figure 4C The third tool head 2c shown is designed to perform crimping functions.

[0093] For crimping, the third tool head 2c includes two opposing plates 20c, between which the conductor L to be crimped can be inserted. The plates 20c can be adjusted toward each other along an adjustment stroke, so that the electrical connector, such as a sleeve mounted on the conductor L, is crimped with the conductor L when the plates 20c are close to each other.

[0094] Figure 4D The fourth tool head 2d shown is also designed to perform crimping. For crimping, the fourth tool head 2d includes four spikes 20d pointing towards a common center, between which the conductor L to be crimped can be inserted. The spikes 20d can be adjusted along an adjustment stroke towards the common center, allowing the connector to be pressed against the conductor L by the proximal spikes 20d, thus centrally positioned on the conductor L at the common center.

[0095] Figure 5 An exemplary adjustment stroke-adjustment force curve K is shown, measured during the crimping function of tool head 2. The adjustment force of tool head 2 is plotted on the y-axis as a function of the adjustment stroke of tool head 2 on the x-axis. The adjustment stroke is between an adjustment position of 0 mm and an adjustment position of 2.4 mm. In principle, any length of adjustment stroke can certainly be considered and is achievable. The adjustment force is between zero and 3000 N. In principle, any magnitude of adjustment force is certainly conceivable and possible.

[0096] When adjusting tool head 2, the connector arranged on conductor L deforms first. The deformation of the connector requires a relatively small force. In this example, the force applied to deform the connector is less than 400 N. Therefore, in the first curve segment K1 of the adjustment stroke-adjustment force curve K, the rise in the force curve is relatively small. In this case, the adjustment stroke is measured from an adjustment position (where tool head 2 is opened to its maximum extent) to a maximum closed adjustment position (where the connector is pressed against conductor L). In the second curve segment K2 of the adjustment stroke-adjustment force curve K, the adjustment force rises smoothly and linearly with respect to the adjustment stroke. The connector is compressed into a predetermined shape, such as a rectangle, in the second curve segment K2, and conductor L itself is also deformed. The deformation of conductor L can, for example, include the aggregation and contact of the strands of conductor L with each other. In this example, the adjustment force used in the second curve segment K2 is less than 1000 N. In the third curve segment K3, conductor L itself is compressed. Compressing conductor L itself can, for example, include deforming the strands of conductor L. The adjustment force increases more strongly in the third curve segment K3 than in the second curve segment K2. The increase in the third curve segment K3 is also linear. In this example, the adjustment force used in the third curve segment K3 is less than 2500 N.

[0097] By using parameters such as the length of the adjustment stroke that increases approximately linearly with the adjustment force, and / or the maximum adjustment force to be consumed in each curve segment K1, K2, K3, the correct use of the handheld automatic device 1 can be monitored.

[0098] Monitoring the proper use of the handheld automatic device 1 can be done, for example, with the aid of a reference curve R, such as in... Figure 6 The diagram shows three exemplary adjustment stroke-adjustment force curves K, measured while performing the function of a tool head 2. The relationship between the adjustment force (in Newtons) of the tool head 2 and the adjustment stroke (in millimeters) of the tool head 2 is plotted on the y-axis. Additionally, two reference curves R, indicated by dashed lines, are shown. The reference curves R form an envelope that defines the permissible range of the numerical pairs consisting of adjustment force and adjustment stroke, which may occur when processing a preset conductor L using the tool head 2 connected to the handheld automatic device 1. Numerical pairs outside the permissible range can indicate errors in operation or processing, such as a worn tool head 2, a mismatched conductor L, or a mismatched tool head 2.

[0099] The adjustment stroke-adjustment force curve does not initially rise when the adjustment stroke is small. The adjustment force is almost zero in this region. Then, the adjustment force rises very steeply over short adjustment strokes, and then remains almost constant for the three adjustment stroke-adjustment force curves over slightly longer sections of the adjustment stroke. After the section with constant adjustment force, the adjustment force of the three adjustment stroke-adjustment force curves rises steeply but linearly with the adjustment stroke. Here, one of the three adjustment stroke-adjustment force curves rises more steeply than the others. It intersects one of the reference curves R and therefore contains numerical pairs outside the permissible range. This can be an indication that an error has occurred when processing conductor L, when the adjustment stroke-adjustment force curve is locally outside the permissible range between the reference curves. Because the adjustment force rises faster than in the other adjustment stroke-adjustment force curves, an unsuitable connector may have been used, for example, during the processing of conductor L. The control unit 16 can determine this deviation of the numerical pair from the reference value and, in response to the difference exceeding a preset value, provide an indication of a possible error to the user of the handheld automatic device 1 via the quality display 103.

[0100] Figure 7 and Figure 8 A schematic diagram of an embodiment of a handheld automatic device 1 is shown, which is configured to... Figure 3 The handheld automatic device 1 shown in one embodiment is configured in a manner that...

[0101] The handheld automatic device 1 has a housing 10, in which a driver 12 consisting of a motor 121 and a transmission device 122 is disposed. The motor 121 and the transmission device 122 enable the spindle 123 to rotate. The spindle is coupled to a piston 124 constructed in the manner of a spindle nut. A tool interface 11 for detachable connection with a tool head 2 is connected to the piston.

[0102] By driving the spindle 123, the piston 124 can move linearly along the spindle 123 and manipulate the tool head 2 to perform functions associated with the tool head 2, such as deinsulating or crimping electrical conductors.

[0103] Force determiner 13 may be arranged, for example, between the drivetrain of driver 12 and housing 10 to absorb the force between driver 12 and housing 10 and thereby derive the force on tool interface 11 and, consequently, tool head 2. Force determiner 13 may have a spring assembly, for example, so that driver 12 can be elastically adjusted axially relative to housing 10 along the extension direction of spindle 123, wherein, for example, the positional change of driver 12 relative to housing 10 can be detected optically or mechanically.

[0104] like Figure 7 As schematically shown, for example, the actuating segment 130 can be connected to the actuator 12, which interacts with a sensor device 131 on the housing 10. The sensor device 131 can be configured, for example, as an optical sensor device, to determine the distance relative to the actuating segment 130 and thus detect positional changes of the actuator 12 relative to the housing 10. Alternatively, the sensor device 131 can be configured, for example, as a microswitch, which interacts with the actuating segment 130 to detect positional changes of the actuator 12.

[0105] Force measurement in the transmission system and therefore on the tool head 2 can also be performed in other ways, such as by analyzing the motor current of the motor 121 when using strain gauges or piezoelectric elements, or by using a torque sensor. For example, the torque on the spindle 23 can be detected, for example by using a force sensor in the form of a piezoelectric element, which detects the torque load between the drive 12 and the housing 10.

[0106] Explanation of reference numerals in the attached figures

[0107] 1. Handheld automatic device

[0108] 10. Shell

[0109] 101 Lighting Equipment

[0110] 102 Status Display

[0111] 103 Quality Display

[0112] 104 Energy Display

[0113] 11 Tool Interface

[0114] 12 drives

[0115] 121 motor

[0116] 122 Transmission device

[0117] 123 Spindle

[0118] 124 pistons

[0119] 13 Force Determiner

[0120] 130 Functional Section

[0121] 131 Sensor Device

[0122] 14. Stroke Determiner

[0123] 15 Identification devices

[0124] 16 Control Unit

[0125] 160 storage devices

[0126] 17. Operating equipment

[0127] 18. Accumulator

[0128] 19 Data Interface

[0129] 2, 2a, 2b, 2c, 2d tool heads

[0130] 20a blade

[0131] 20c board

[0132] 20d spiked parts

[0133] 21. Other storage devices

[0134] 22 Carrying parts

[0135] E Electrical Contact

[0136] H hand

[0137] I Insulation

[0138] K Adjustment stroke-adjustment force curve

[0139] K1, K2, K3 curve sections

[0140] L electrical conductor

[0141] M sheath

[0142] R reference curve

[0143] S Computer equipment

Claims

1. A tool kit for cutting, deinsulating, and / or crimping electrical conductors (L), comprising: a handheld automatic device (1) operable by a user and having a tool interface (11) and a driver (12); and at least one tool head (2, 2a, 2b, 2c, 2d) configured to perform a function, connectable to the handheld automatic device (1) via the tool interface (11) and actuated via the driver (12) in a connected position, wherein, The handheld automatic device (1) has a force determiner (13) for determining the adjustment force caused by the driver (12) on at least one tool head (2, 2a, 2b, 2c, 2d) connected to the handheld automatic device (1), characterized in that the driver (12) has a spindle driver, and the at least one tool head (2, 2a, 2b, 2c, 2d) has a carrier (22), wherein the driver (12) has a piston (124), and the carrier (22) is coupled to the piston (124) to transmit the adjustment force.

2. The tool kit according to claim 1, characterized in that, Multiple tool heads (2, 2a, 2b, 2c, 2d) are provided, wherein a first tool head (2a) is configured to perform a first function and a second tool head (2b) is configured to perform a second function different from the first function, wherein each tool head (2, 2a, 2b, 2c, 2d) can be connected to a handheld automatic device (1) via a tool interface (11) and can be driven via a driver (12) in the connected position.

3. The tool kit according to claim 1, characterized in that, The at least one tool head (2) is configured to perform one or more of the following functions: cutting, removing insulation, twisting, removing sheath and crimping conductor (L).

4. The tool kit according to claim 1, characterized in that, The tool interface (11) has a snap lock or a rotary lock.

5. The tool kit according to claim 1, characterized in that, A control unit (16) is provided, which can control the driver (12).

6. The tool kit according to claim 5, characterized in that, The control unit (16) is configured to preset the adjustment force, the speed of the driver (12), the torque of the driver (12), and / or the adjustment stroke according to the at least one tool head (2, 2a, 2b, 2c, 2d), wherein the at least one tool head (2, 2a, 2b, 2c, 2d) can be adjusted along the adjustment stroke when performing the corresponding function.

7. The tool kit according to claim 1, characterized in that, The handheld automatic device (1) has an identification device (15) for identifying the corresponding connected tool head (2).

8. The tool kit according to claim 7, characterized in that, The identification device (15) is configured to identify the connected tool head (2) by means of mechanical, magnetic, electrical and / or optical signals.

9. The tool kit according to claim 1, characterized in that, The handheld automatic device (1) has a stroke determiner (14) for determining the adjustment position on the adjustment stroke, wherein at least one tool head (2, 2a, 2b, 2c, 2d) can be adjusted along the adjustment stroke when performing the corresponding function.

10. The tool kit according to claim 9, characterized in that, The handheld automatic device (1) is configured to compare a numerical pair consisting of adjustment position and adjustment force with a reference value, and / or compare an adjustment stroke-adjustment force curve (K) with at least one reference curve (R) in order to monitor the correct implementation of the corresponding function.

11. The tool kit according to claim 10, characterized in that, The handheld automatic device (1) has a quality display (103) configured to display an indication when the deviation of the value from the reference value or the deviation of the adjustment stroke-adjustment force curve (K) from the at least one reference curve (R) exceeds a preset difference.

12. The tool kit according to claim 10, characterized in that, The handheld automatic device (1) is configured to preset the reference value and / or the at least one reference curve according to the corresponding connected tool head (2, 2a, 2b, 2c, 2d).

13. The tool kit according to claim 10, characterized in that, The handheld automatic device (1) and / or the at least one tool head (2, 2a, 2b, 2c, 2d) have storage devices (21, 160) storing reference values ​​and / or at least one reference curve (R) for the at least one tool head (2, 2a, 2b, 2c, 2d).

14. The tool kit according to claim 13, characterized in that, The handheld automatic device (1) is configured to generate additional reference values ​​from the numerical pair consisting of adjustment position and adjustment force, or to generate at least one additional reference curve (R) from the adjustment stroke-adjustment force curve (K), and to store additional reference values ​​or additional reference curves in storage devices (21, 160) in addition to the reference values ​​already stored and / or at least one reference curve (R) already stored.

15. The tool kit according to claim 10, characterized in that, The handheld automatic device (1) is designed to preset a shortened adjustment stroke, so that by using the tool head (2, 2a, 2b, 2c, 2d) connected to the handheld automatic device (1) for performing the insulation removal function (2b), the insulation of the conductor (L) is partially removed by means of the preset adjustment stroke, so that the section of the insulation jacket (I, M) of the conductor (L) that is separated during the insulation removal remains on the conductor (L).

16. The tool kit according to claim 1, characterized in that, The handheld automatic device (1) has a data interface (19), through which a computer device (S) can be coupled to the handheld automatic device (1) to transmit data between the computer device (S) and the handheld automatic device (1).

17. The tool kit according to claim 16, characterized in that, The data interface (19) can transmit the identification data of the tool head (2, 2a, 2b, 2c, 2d), the recorded numerical pairs consisting of adjustment force and adjustment position on the adjustment stroke, the reference value for the numerical pairs, the recorded adjustment stroke-adjustment force curve (K) and / or the reference curve (R) for the adjustment stroke-adjustment force curve (K) to or from the computer device (S), wherein the tool head (2, 2a, 2b, 2c, 2d) can adjust along the adjustment stroke when performing the corresponding function.

18. The tool kit according to claim 2, characterized in that, The handheld automatic device (1) and / or the at least one tool head (2, 2a, 2b, 2c, 2d) have a storage device (21, 160) capable of storing information and / or the number of times the plurality of tool heads (2, 2a, 2b, 2c, 2d) have been worn, the number indicating how many times the plurality of tool heads (2, 2a, 2b, 2c, 2d) have been used to perform a function.

19. The tool kit according to claim 18, characterized in that, The driver (12) is configured to drive the at least one tool head (2, 2a, 2b, 2c, 2d) according to wear and / or number of times.

20. The tool kit according to claim 1, characterized in that, The handheld automatic device (1) has a lighting device (101) for illuminating the connected tool heads (2, 2a, 2b, 2c, 2d).

21. A method for calibrating a handheld automatic device (1) of the tool kit according to claim 1, wherein, The handheld automatic device (1) is manually operable by a user and has a tool interface (11) and an electric drive (12), wherein tool heads (2, 2a, 2b, 2c, 2d) are connected to the handheld automatic device (1) via the tool interface (11) and driven via the drive (12) in the connected position, characterized in that the tool heads (2, 2a, 2b, 2c, 2d) are adjusted along an adjustment stroke, and an adjustment force is obtained for adjusting the tool heads (2, 2a, 2b, 2c, 2d) along the adjustment stroke.

Images