EP4076857A1 - Procédé de commande d'un outil électrique portatif - Google Patents

Procédé de commande d'un outil électrique portatif

Info

Publication number
EP4076857A1
EP4076857A1 EP20824190.1A EP20824190A EP4076857A1 EP 4076857 A1 EP4076857 A1 EP 4076857A1 EP 20824190 A EP20824190 A EP 20824190A EP 4076857 A1 EP4076857 A1 EP 4076857A1
Authority
EP
European Patent Office
Prior art keywords
torque value
power tool
drive unit
time
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20824190.1A
Other languages
German (de)
English (en)
Inventor
Heiko Roehm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP4076857A1 publication Critical patent/EP4076857A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
    • B25B23/1475—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers for impact wrenches or screwdrivers

Definitions

  • the present invention relates to a method for operating a handheld power tool with a drive unit, a manual switch and a control unit.
  • the present invention is based on a method for operating a hand machine tool, in particular a rotary impact wrench, with a drive unit, a manual switch, a control unit and with a release operating mode for releasing a screw connection, in particular a fastening element from a fastening support, in which when the Manual switch a parameter of the drive unit is at least partially automatically controlled and / or regulated.
  • the invention provides a method for operating the handheld power tool with which a user can automatically loosen the screw connection by the user operating the manual switch and thereby automatically controlling and / or regulating the control unit.
  • a “hand-held machine tool” is to be understood in particular as a hand-held machine tool, preferably a battery-operated hand-held machine tool with a rotary hammer mechanism.
  • exemplary the handheld power tool can be designed as an impact wrench or as a rotary impact screwdriver.
  • the screw connection is a connection between the fastening element and the fastening support, the fastening element being screwed to the fastening support.
  • the fastening element can be a screw, a nut or other comparable rotatable fastening elements.
  • the fastening support can be a plastic fastening support, such as a wall, a metal workpiece, a threaded bolt or other comparable fastening support or a combination thereof. It is also conceivable that the fastening support is an elastic fastening support, such as a molded part made of rubber.
  • the handheld power tool has the manual switch and the control unit.
  • the manual switch can be operated by the user using at least one finger in order to control and / or regulate the drive unit of the handheld power tool.
  • the user can control and / or regulate the characteristic variable of the drive unit by means of the hand switch.
  • the manual switch also converts the actuation by the user into an electrical signal and transmits it to the control unit.
  • the control unit receives the electrical signal and controls and / or regulates the drive unit of the handheld power tool.
  • the handheld power tool has the drive unit, wherein the drive unit can also include a gear unit in addition to an electric motor.
  • the gear unit is designed to adapt a speed of the electric motor, in particular to reduce and / or increase it.
  • the gear unit can be designed as a planetary gear, it also being conceivable for the planetary gear to be switchable.
  • the electric motor of the handheld power tool is designed to provide a torque for a drive of a main output element.
  • the main output element is designed as a main output shaft.
  • the main output shaft preferably runs essentially parallel to a working direction of the handheld power tool. In the context of the present invention, “essentially parallel” is to be understood as an alignment of a direction relative to a reference direction, in particular in a plane.
  • the parameter of the hand power tool which is automatically controlled and / or regulated as soon as the manual switch is operated, is, for example, a speed of the drive unit, the torque of the drive unit, a voltage of the drive unit or a current of the drive unit, with other parameters of the An drive motor are conceivable.
  • the drive unit in particular the electric motor, is supplied with energy by an energy supply unit of the handheld power tool.
  • the hand tool machine includes a power supply unit.
  • the power supply unit of the handheld power tool is provided for supplying power to at least the drive unit, in particular the electric motor and the control unit.
  • the handheld power tool is preferably a battery-operated handheld power tool which can be operated by means of at least one rechargeable battery, in particular by means of a handheld power tool battery pack.
  • the energy is then provided by the at least one energy supply unit by means of the at least one rechargeable battery.
  • a “handheld power tool battery pack” is to be understood as a combination of at least one battery cell and a battery pack housing.
  • the handheld power tool battery pack is advantageously designed to supply energy to commercially available, battery-operated handheld power tools.
  • the at least one battery cell can be designed as a Li-ion battery cell with a nominal voltage of 3.6 V, for example.
  • the at least one battery can be arranged fixed to the housing essentially within the handheld power tool housing, in particular attached, in particular mounted.
  • the at least one battery is designed as an exchangeable battery, in particular as an exchangeable battery pack.
  • the handheld power tool can be a mains-operated handheld power tool, which can be connected to an external mains socket by means of a power supply cable.
  • the external power socket can provide a voltage of, for example, 100 V, 110 V, 120 V, 127 V, 220 V, 230 V or 240 V with 50 Hz or 60 Hz, but also a three-phase alternating voltage.
  • the possible configurations of the external mains socket and the associated voltages available are sufficiently known to the person skilled in the art.
  • the handheld power tool also has a tool holder for a connection with an insert tool.
  • the tool holder is assigned to the main output shaft, in particular connected to it, so that the drive of the main output shaft can be transmitted to the tool holder.
  • the insert tool can be designed, for example, in the form of a screwdriver bit, as a HEX bit or as a socket.
  • the tool receptacle can be designed as a polygonal internal receptacle, in particular a hexagonal internal receptacle. It is also conceivable that the tool holder is shaped as a polygonal external holder or as a chuck.
  • a counterclockwise rotation direction of the drive unit is set to loosen the screw connection.
  • the fastening element has a right-hand thread, so that the fastening element is detached from the fastening carrier by means of the insert tool by means of the counter-clockwise drive unit.
  • a clockwise direction of rotation of the drive unit is set to loosen the screw connection. If the fastening element has a left-hand thread, the clockwise drive unit releases the fastening element from the fastening carrier with the aid of the insert tool.
  • the release operating mode for releasing the screw connection is activated by the control unit receiving at least one signal for activating the release operating mode and releasing the manual switch for actuation.
  • the signal for activating the release operating mode comprises at least one piece of information that the user would like to activate the release operating mode.
  • the user can trigger the signal to activate the release operating mode by means of an input unit with at least one input element of the handheld power tool and / or an external electronic device.
  • the handheld power tool has the input unit with the input element.
  • the input unit can be arranged on the handheld power tool, connected to the handheld power tool, in particular in a detachable manner or be designed as a retrofittable input unit.
  • the input element can for example be designed as a rotary element, a push element or a sliding element.
  • the user can trigger the signal for activating the release operating mode.
  • the input unit transmits the activation signal to the control unit in a wired or wireless manner.
  • the signal for activating the release operating mode can also be triggered and sent by means of the external electronic device.
  • the external electronic device has a communication unit.
  • the external electronic device can be, for example, a smartphone, a tablet or a computer, a cloud-based interface also being conceivable.
  • the user can, for example, use a program, in particular an app, to trigger the signal to activate the release operating mode.
  • the external electronic device then uses the communication unit to send the signal for activating the release operating mode to the handheld power tool.
  • the handheld power tool includes a communication unit.
  • the communication unit is supplied with energy by the energy supply unit.
  • the communication unit of the handheld power tool receives the signal for activating the release operating mode and forwards it to the control unit wirelessly or by wire.
  • the handheld power tool can be switched on or switched off.
  • the communication unit is designed so that the signal for activating the release operating mode can be received even when the handheld power tool is switched off.
  • the communication unit can have its own energy supply unit. It is conceivable that the communication unit, when receiving the signal for activating the release operating mode, puts the hand-held power tool into an operational state.
  • the communication unit of the handheld power tool is assigned to the handheld power tool, but can also be arranged on the handheld power tool.
  • the communication unit is connected to the handheld power tool, in particular in a detachable manner.
  • the communication unit it is also possible for the communication unit to be designed as a retrofittable communication unit for retrofitting the handheld power tool.
  • Communication unit of the handheld power tool and the external electronic device designed to send and / or receive communication signals.
  • the communication unit of the external electronic device sends the signal for activating the release operating mode as the communication signal and the communication unit of the hand power tool receives the signal for activating the release operating mode.
  • the communication signals can be wired, via a wire connection or via conductor tracks on a printed circuit board, and / or the communication signals can be transmitted wirelessly.
  • a wireless transmission of the communication signals can be in the form of Bluetooth, WLAN, infrared, near-field communication (NFC) using RFID technology, as well as other wireless transmissions of the communication signals familiar to those skilled in the art.
  • the communication protocols used can be Bluetooth Smart, GSM, UMTS, LTE, ANT, ZigBee, LoRa, SigFox, NB-loT, BLE, IrDA, as well as other communication protocols familiar to those skilled in the art.
  • the communication unit of the handheld power tool can have its own energy supply unit for supplying energy.
  • its own energy supply unit can be a battery, in particular a button cell, a capacitor or at least a rechargeable battery.
  • the control unit receives the activation signal.
  • the control unit is designed to control and / or regulate the handheld power tool.
  • the parameter of the drive unit is at least partially automatically controlled and / or regulated after an impact mechanism, in particular rotary impact mechanism, of the handheld power tool has been activated.
  • the control unit is designed in such a way that it recognizes the activation of the striking mechanism as soon as the drive unit is put into operation. As soon as the control unit has recognized the activation of the striking mechanism, the control unit controls and / or regulates the characteristic variable of the drive unit. This enables the screw connection to be loosened piece by piece with a suitable torque.
  • the release operating mode is carried out from a first point in time t1 to a second point in time t2, the second point in time t2 following the first point in time t1.
  • the release operating mode is started, the drive unit being put into operation by actuating the manual switch. Furthermore, the release operating mode is carried out from the first point in time t1 to the second point in time t2. During the release operating mode, the hammer mechanism is activated in order to loosen screw connection by striking the hammer mechanism on the tool holder.
  • the release operating mode is carried out from a start time t0 to a second time t2, the drive unit being activated at the start time t0.
  • the release operating mode is started at the start time tO, the drive unit being activated at the start time tO.
  • the hammer mechanism can also be activated at the start time tO, depending on the screw connection that the user would like to loosen.
  • the release operating mode is carried out from the start time t0 to the first time t1, the hammer mechanism being activated at the first time t1. Furthermore, the release operating mode is carried out from the first point in time t1 to the second point in time t2 in order to release the screw connection.
  • the release operating mode is deactivated after the second point in time t2. As soon as the second point in time t2 is reached, the release operating mode is deactivated by the control unit. If the user continues to operate the hand switch after the second point in time t2, depending on the state of the fastening means, in particular the screw or the nut, the screw connection can be loosened essentially without a hammer mechanism or the fastening means, in particular the screw or the nut, is still applied with a torque, in particular a second torque value M2.
  • the fastening element can be released from the fastening carrier after the second point in time t2 in such a way that the hammer mechanism is essentially no longer activated when the fastening element is further released from the fastening carrier.
  • the parameter is a speed of the drive unit, the speed being assigned at least one torque value M, and the torque M is at least partially changed automatically up to a first torque value M1 of the handheld power tool with a first increase by changing the speed of the drive unit becomes.
  • the release operating mode can make it possible to change the speed of the drive unit.
  • the release operating mode can at least partially automatically lower the speed via the control unit and then increase it gradually or continuously up to the torque value M1. It is also conceivable that the release operating mode via the control unit when the striking mechanism is activated, depending on the screw connection, at least partially automatically increases the speed of the drive unit and increases it gradually or continuously until the torque value M1 is reached.
  • the first torque value M1 can be coupled to a first speed limit range.
  • the first torque moment value M1 can be applied to the main output shaft, in particular the tool holder.
  • a time period T1 can be from the starting time t0, when the manual switch is operated, to the first time t1. After time t1, the torque value M1 can be achieved by the control unit changing the speed.
  • the first slope S1 can be a change, in particular an increase, in the torque value M until the torque value M1 is reached.
  • the torque value M1 can be definable by the user.
  • the first torque value M1 is in a range from 10% to 80%, in particular 20% to 70%, very particularly 30% to 65%, of a maximum torque value M3.
  • the maximum torque value M3 is coupled to a maximum speed of the drive unit.
  • the speed is changed, in particular increased, up to a second torque value M2 of the handheld power tool with a second slope S2.
  • the second torque value M2 can be higher than the first torque value M1. It is also conceivable that the second torque value M2 is less than the first torque value M1.
  • the speed is at least partially automatically changed, in particular increased, until the second torque value M2 is reached.
  • the Time span T2 can be from the first point in time t1 to the second point in time t2 from which the torque value M2 can be reached.
  • the second torque value M2 can be coupled to a second speed limit range.
  • the control unit can set the drive unit to the second torque value M2 by at least partially automatically limiting the speed to the second speed limit range.
  • the second torque value M2 can be a maximum available torque.
  • the second torque value M2 can preferably be greater than the first torque value M1.
  • the second speed limit range is thus greater than the first speed limit range.
  • the time period T2 can be in a time range from 5 s to 30 s, in particular 10 s to 25 s, in particular 12 s to 20 s.
  • the first slope S1 can be adjustable by the user, whereas the second slope S2 can be preset from the release operating mode. This makes it possible for the screw connection to be carefully loosened so that damage, in particular destruction, of the fastening element is avoided.
  • the handheld power tool has the hammer mechanism, where the hammer mechanism is activated when the first torque value M1 is reached.
  • the striking mechanism can be activated from a starting torque value MO, the starting torque value MO being dependent on a mechanical design of the striking mechanism.
  • the hammer mechanism can be activated as soon as a resistance on the main output shaft, which can be applied to the tool holder, exceeds the starting torque value MO.
  • the hammer mechanism can be designed as the rotary hammer mechanism, as an oil hammer mechanism or as a pneumatic hammer mechanism.
  • the rotary hammer mechanism can be designed as a mechanical rotary hammer mechanism.
  • the hammer mechanism When the starting torque value MO is reached with the increase in torque, the hammer mechanism can be activated so that the hammer mechanism can generate torque impulses at constant or further increasing torque on the main drive shaft, in particular the tool holder.
  • torque pulses are to be understood as pulses that are generated by the hammer mechanism and transmitted to the main output shaft, in particular the tool holder.
  • the first torque value M1 can thus be derived from the starting torque value MO, from which the striking mechanism is activated and assemble the torque pulses in order to enable the screw connection to be loosened in the loosening operating mode.
  • control unit it is possible for the control unit to recognize after several blows of the hammer mechanism that the hammer mechanism is in hammering mode, so that the release operating mode at least partially automatically lowers the torque value M to the first torque value M1 via the control unit.
  • the second torque value M2 is in a range from 50% to 100% of the maximum torque value M3. This provides an efficient handheld power tool.
  • the hammer mechanism is activated during the time period T2.
  • the torque value M2 can be composed of the starting torque value MO and the torque pulses from the hammer mechanism. With the striking mechanism activated during the period T2, the screw connection can be loosened efficiently.
  • the speed is continuously increased during the time period T2.
  • the continuous increase in speed can be progressive or degressive.
  • the speed can be increased linearly, quadratically, logarithmically or exponentially.
  • the speed is increased discretely during the time period T2.
  • the discrete speed increase can be progressive or degressive.
  • the hammer mechanism can then execute at least two successive blows with essentially the same torque pulse level.
  • the speed is kept essentially constant, in particular until the hammer mechanism is deactivated.
  • the speed is kept essentially constant.
  • the time span T3 can be from the second point in time t2 to a third point in time t3.
  • the screw connection in particular the fastening element, experiences a torque pulse which corresponds to a torque value equal to M2.
  • the control unit can adjust the speed of the Allow the drive unit to be limited to the second speed limit range so that the second torque value M2 remains set during the period T3. This enables the screw connection to be released with the second torque value M2.
  • the release operating mode it is possible for the release operating mode to be ended after time t2 and for the user to release the screw connection essentially without the impact of the hammer mechanism.
  • the user automatically regulates the speed of the drive unit via the manual switch after the release operating mode has ended, in order to completely release the loosened fastening element from the fastening support.
  • the first torque value M1 and the second torque value M2 are preset in the control unit. This enables the user to directly use the handheld power tool to loosen the screw connection.
  • the first torque value M1 and the second torque value M2 can be set in the control unit.
  • the user can set the first torque value M1 and the second torque value M2 in such a way that the user can automatically loosen the screw connection efficiently.
  • the user can set the first torque value M1 and the second torque value M2 by means of the input unit of the handheld power tool and / or by means of the external electronic device.
  • the second slope S2 is preset in the control unit. This ensures that the user can automatically loosen the screw connection immediately when the hand switch is operated.
  • the second slope S2 can be set in the control unit. This allows the user to set the second slope S2 so that the user can automatically loosen the screw connection depending on the application.
  • the user can set the second incline S2 with the aid of the input unit of the handheld power tool and / or with the aid of the external electronic device.
  • a maximum speed of the drive unit can be set in one process step.
  • the user can set the maximum speed by means of the input unit, in particular the input element, and / or the external electronic device.
  • the speed is reduced when the hammer mechanism is activated.
  • at least one torque impulse is required in the method step in order to recognize that the hammer mechanism has been activated.
  • the speed can be reduced in order to weaken the following torque pulse of the striking mechanism on the fastening element, that is to say the first torque value M1. This makes it possible for the loosening of the fastening element to be continued cautiously in order to avoid damage, in particular destruction, of the fastening element.
  • a change in the speed of the drive unit can be set during the time period T 1 and / or a time period T2.
  • the user can set the speed change by means of the input unit, in particular the input element, and / or the external electronic device. This provides a method with which the user can efficiently process various use cases.
  • the invention also proposes a control unit, in particular a handheld tool machine, in particular a rotary impact wrench, for carrying out the method as described above.
  • the invention further provides a hand machine tool, as described above, for performing a method, as described above, for releasing a screw connection.
  • Fig. 1 is a schematic side view of a hand machine according to the invention
  • FIG. 2 shows a flow chart of a method according to the invention for operating the handheld power tool
  • FIG. 3 shows a torque-time diagram for the method according to the invention for operating the hand-held power tool
  • the handheld power tool 100 comprises a main output shaft 124, a tool holder 150 and an impact mechanism 122.
  • the impact mechanism 122 is designed as a rotary impact mechanism.
  • the handheld power tool 100 has a housing 110 with a handle 126.
  • the handheld power tool 100 can be mechanically and electrically connected to an energy supply for battery operation for a network-independent power supply, so that the handheld power tool 100 is designed as a battery-operated handheld power tool 100.
  • a handheld power tool battery pack 130 serves as the energy supply.
  • the present invention is not limited to battery-operated handheld power tools, but can also be used in network-dependent, that is, mains-operated, handheld power tools or pneumatically operated handheld power tools.
  • the housing 110 is T-shaped here, a pistol-shaped housing also being conceivable.
  • the housing 110 comprises a drive unit 111 and the hammer mechanism 122.
  • the handheld power tool 100 also has a control unit 102 for regulating and / or controlling the drive unit 111.
  • the drive unit 111 further comprises an electric motor 114, which is supplied with power from the handheld power tool battery pack 130, and a gear unit 118.
  • the gear unit 118 can be designed as at least one planetary gear.
  • the electric motor 114 is designed in such a way that it can be actuated via a manual switch 128, so that the electric motor 114 can be switched on and off.
  • the electric motor 114 can be any type of motor, such as, for example, an electronically commutated motor or a direct current motor.
  • the electric motor 114 can advantageously be controlled and / or regulated electronically, so that reversing operation and a desired speed can be implemented.
  • the structure and the mode of operation of a suitable electric motor are sufficiently known to the person skilled in the art, which is why they will not be discussed in more detail here.
  • the gear unit 118 is connected to the electric motor 114 via a motor shaft 116.
  • the gear unit 118 is provided to convert a rotation of the motor shaft 116 into a rotation between the gear unit 118 and the hammer mechanism 122 via a drive member 120, for example a drive shaft. This conversion preferably takes place in such a way that the drive member 120 rotates relative to the motor shaft 116 with increased torque, but at a reduced speed.
  • a motor housing 115 is assigned to the electric motor 114, as is a gear housing 119 to the gear unit 118.
  • the motor housing 115 and the gear housing 119 are arranged in the housing 110, for example.
  • the electric motor 114 and the gear unit 118 can be arranged directly in the housing 110 if the handheld power tool 100 is designed in an “open frame” design.
  • the striking mechanism 122 is connected to the drive member 120 and comprises an impact body 125 which generates sudden rotary impulses with high intensity. These sudden rotary impulses are transmitted via the impact body 125 to the main output shaft 124, for example a work spindle.
  • the striking mechanism 122 comprises a striking mechanism housing 123, wherein the striking mechanism 122 can also be arranged in another suitable housing, such as the gear housing 119, for example.
  • the striking mechanism 122 is designed to drive the main output shaft 124.
  • a tool holder 150 is provided on the main output shaft 124.
  • the tool holder 150 is preferably integrally formed and / or designed on the main output shaft 124. In this embodiment, the tool holder 150 is designed as a polygonal internal holder for connection to an insert tool 140.
  • the polygonal internal receptacle is shaped here in the manner of a bit holder with an internal hexagon receptacle and is designed to receive the insert tool 140 in the manner of a screwdriver bit.
  • the insert tool 140 has a matching external hexagon coupling 142 for this purpose.
  • the type of screwdriver bit for example of the HEX type, is sufficiently known to the person skilled in the art.
  • the present invention is not restricted to the use of HEX screwdriver bits, but rather additional insert tools that appear sensible to a person skilled in the art can also be used, such as HEX drills or SDS-Quick insert tools.
  • the tool holder 150 it is also possible for the tool holder 150 to be designed as a polygonal external holder. It is also conceivable that the tool holder 150 is shaped as a polygonal external holder for receiving a socket.
  • Handheld power tool 100 further comprises an input unit 170 with an input element 172 for triggering a signal for activating a release operating mode.
  • the input element 172 is designed as a pusher element, not shown in detail.
  • the signal for activating the release operating mode here has information that the user would like to activate the release operating mode for releasing a fastening element from a fastening carrier.
  • the fastening element and the fastening support are not shown in detail here.
  • the input unit 170 forwards the signal for activating the release operating mode to the control unit 102 in a wired manner.
  • the control unit 102 receives the signal for activating the release operating mode, the control unit 102 activates the release operating mode for releasing the fastening element.
  • handheld power tool 100 additionally comprises a communication unit 160.
  • Communication unit 160 is designed to have a Establish communication link 180.
  • the communication unit 160 is arranged within the housing 110.
  • the communication unit 160 is designed to receive the signal for activating the release operating mode from an external electronic device (not shown in detail) via the communication connection 180.
  • the user can trigger the signal for activating the release operating mode and transmit it to the communication unit 160 via the communication link 180.
  • the signal for activating the release operating mode is transmitted wirelessly from the external electronic device to the communication unit 160 by means of the communication connection 180.
  • the communication unit 160 transmits the signal for activating the release operating mode to the control unit 102 via a wired connection of the release operating mode and activates the release operating mode.
  • the method 200 releases a screw connection, for example a fastening element from a fastening carrier.
  • the method 200 controls and / or regulates a parameter of the drive unit 111 when the manual switch 128 is operated.
  • the parameter of the drive unit 111 is the speed of the drive unit 111 Signal to activate the release operating mode.
  • the release operating mode for releasing the fastening element is activated in a method step 220.
  • a direction of rotation of the drive unit 111 is set in order to release the fastening element.
  • a counterclockwise direction of rotation of the drive unit 111 is set if the fastening element has a right-hand thread.
  • a clockwise direction of rotation of the drive unit 111 is set if the fastening element has a left-hand thread.
  • a maximum speed of the drive unit 111 is preset at the factory.
  • the user can set the maximum speed with the aid of the input unit 170.
  • the user can set the maximum speed using the external electronic device.
  • a first torque value M1 of the drive unit 111 with a first slope S1 is determined by means of the control unit 102 in a method step 240 set.
  • the first torque value M1 can be set in a range from 10% to 80% of a maximum torque value M3.
  • the maximum torque value M3 is linked to the maximum speed that has been set.
  • the first torque value M1 and the first slope S1 are preset at the factory. The option 240a therefore enables the control unit 102 to set the first torque value M1 and the first slope S1 directly when the release operating mode is activated.
  • the user can select the first torque value M1 and the first incline S1 with the aid of the input unit 170.
  • the user can set the first torque value M1 and the first slope S1 by means of the external electronic device.
  • the speed of the drive unit 111 is automatically increased in a method step 250 up to the first torque value M1 with the first slope S1. This takes place essentially independently of a position of the manual switch 128.
  • the speed is automatically increased during a time period T1 until the first torque value M1 is reached, see also FIG it can also be set by the user using the input unit 170 or the external electronic device.
  • the speed of the drive unit 111 is preset at the factory at a starting time t0 when the manual switch 128 is actuated.
  • the speed at the start time t0 can be set by the user with the aid of the input unit 170.
  • the speed at the start time t0 can be set by the user by means of the external electronic device. While the first torque value M1 is automatically reached with increasing speed, the hammer mechanism 122 is activated in a method step 260, see also FIG.
  • the striking mechanism 122 is activated when the starting torque value MO is reached.
  • the speed can be reduced when the hammer mechanism is activated.
  • the speed is increased in a process step 270 up to a second torque value M2 with a second slope S2.
  • the second slope S2 is less than the first slope S1.
  • the second torque value M2 is increased during a time period T2, see also FIG. 3.
  • the second torque value M2 is in a range from 50% to 100% of the maximum torque value M3.
  • the time period T2 can be in a time range from 5 s to 30 s.
  • the time period T2 can be set by the user with the aid of the input unit 170 or the external electronic device, or the time period T2 can also be preset at the factory.
  • the second torque value M2 and the second slope S2 are preset at the factory.
  • the user can set the second torque value M2 and the second slope S2 through the input unit 170.
  • the user can set the second torque value M2 and the second slope S2 via the external electronic device.
  • the speed is increased continuously during the time period T2. The speed is increased discretely in an option 270e during the time period T2. After the second torque value M2 has been reached or after the time period T2, the loosening operating mode ends automatically and the operator or the state of the screw decide how to proceed, see also FIG. 3.
  • the first The slope S1 is defined by the operator using the manual switch 128.
  • 3 shows a torque M - time t diagram 300 for the method for operating the handheld power tool 100.
  • the torque M is in the unit Nm, whereas the time t is given in seconds. 3 is an idealized representation for the torque M - time t - diagram, in which all influencing factors are neglected.
  • the factors influencing the torque M-time t diagram can be, for example, a variable voltage on the drive unit 111, influences from the gear unit 118, the hammer mechanism 122, or the electric motor 114.
  • the torque M is increased up to the first torque value M1 with the first slope S1.
  • the time period T1 is from the starting time t0, when the manual switch is actuated, to a first time t1.
  • the hammer mechanism 122 is activated. In the time period T2, the speed is increased further until the second torque value M2 is reached.
  • the time period T2 is from the first point in time t1 to a second point in time t2.
  • the time periods T3 and T4 are after the release operating mode and thus defined by the operator.
  • the speed is kept essentially constant, so that the second torque value M2 is kept.
  • the time period T3 is from the second point in time t2 to a third point in time t3.
  • the striking mechanism 122 is deactivated and exemplifies the spinning out of a loosened screw.
  • the speed is kept essentially constant.
  • the time period T4 is from the third Point in time t3 to a fourth point in time t4, the fourth point in time t4 being an end point.
  • the hammer mechanism 122 kicks in and generates torque pulses as the speed increases.
  • Impact mechanism 122 a pulse for an additional torque on the main drive shaft 124 and the tool holder 150 can be generated. After each impact of the impact mechanism 122, the starting torque value MO is applied to the main output shaft 124 and the tool holder 150 until the impact mechanism 122 generates a next torque pulse.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention concerne un procédé de commande d'un outil électrique portatif (100), en particulier d'une visseuse à percussion rotative, comprenant une unité d'entraînement (111), un commutateur de déclenchement manuel (128), une unité de commande (102) et un mode de fonctionnement de séparation pour séparer un raccord vissé, en particulier pour séparer un élément de fixation d'un support de fixation, selon lequel une variable caractéristique de l'unité d'entraînement (121) est au moins partiellement commandée automatiquement en boucle ouverte et/ou en boucle fermée en cas d'actionnement.
EP20824190.1A 2019-12-19 2020-12-09 Procédé de commande d'un outil électrique portatif Pending EP4076857A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019220254 2019-12-19
DE102020208993.0A DE102020208993A1 (de) 2019-12-19 2020-07-17 Verfahren zum Betreiben einer Handwerkzeugmaschine
PCT/EP2020/085288 WO2021122225A1 (fr) 2019-12-19 2020-12-09 Procédé de commande d'un outil électrique portatif

Publications (1)

Publication Number Publication Date
EP4076857A1 true EP4076857A1 (fr) 2022-10-26

Family

ID=76205928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20824190.1A Pending EP4076857A1 (fr) 2019-12-19 2020-12-09 Procédé de commande d'un outil électrique portatif

Country Status (4)

Country Link
EP (1) EP4076857A1 (fr)
CN (1) CN115135459A (fr)
DE (1) DE102020208993A1 (fr)
WO (1) WO2021122225A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000054939A1 (fr) * 1999-03-16 2000-09-21 Kuken Co., Ltd. Procede de lecture d'angle de rotation de cle rotative a main, procede de detection de vibrations a la main, procede d'evaluation de serrage et procede de controle d'outil a main de desserrage mecanique
EP1769887B1 (fr) * 2000-03-16 2008-07-30 Makita Corporation Outils de puissance
CA2755763A1 (fr) * 2009-07-29 2011-02-03 Hitachi Koki Co., Ltd. Outil a impact
JP2011156629A (ja) * 2010-02-02 2011-08-18 Makita Corp モータ制御装置、電動工具、及びプログラム
DE102015211119A1 (de) * 2014-06-20 2015-12-24 Robert Bosch Gmbh Verfahren zum Steuern eines Elektromotors eines Elektrowerkzeuges
JP7132707B2 (ja) * 2017-10-17 2022-09-07 株式会社マキタ 電動作業機

Also Published As

Publication number Publication date
WO2021122225A1 (fr) 2021-06-24
DE102020208993A1 (de) 2021-06-24
CN115135459A (zh) 2022-09-30

Similar Documents

Publication Publication Date Title
KR20060098989A (ko) 보조핸들을 구비하는 회전구동 수공구
EP3260240B1 (fr) Machine-outil portative et procédé pour l'opération de cette machine-outil portative
WO2020064330A1 (fr) Procédé de contrôle ou de régulation d'une machine-outil portatif
DE102014224591A1 (de) Werkzeugvorsatz sowie Werkzeugsystem
DE102013212573B4 (de) Handwerkzeugmaschinenschaltvorrichtung
EP4364896A1 (fr) Procédé d'affichage d'une exposition cible d'une machine-outil portative
DE102015206015A1 (de) Akkupack für eine Handwerkzeugmaschine
WO2017021144A1 (fr) Machine-outil portative
DE102011007648A1 (de) Handwerkzeugmaschine
WO2021122225A1 (fr) Procédé de commande d'un outil électrique portatif
WO2021094152A1 (fr) Procédé de commande et de régulation d'une machine-outil et poignée pour machine-outil
EP4058246A1 (fr) Procédé permettant de commander et de régler une machine-outil
EP4058249A1 (fr) Procédé de commande et de réglage d'une machine-outil
WO2023016811A1 (fr) Procédé de commande d'outil électrique portatif
WO2021094155A1 (fr) Dispositif de type poignée pour une machine-outil
WO2016206861A1 (fr) Machine-outil portative
EP2195917B1 (fr) Montage électrique pour un outil électrique
EP3898121B1 (fr) Machine-outil portative
WO2019145156A1 (fr) Procédé de commande d'une visseuse à percussion
WO2021094153A1 (fr) Procédé de commande et de régulation d'une machine-outil
DE102022213034A1 (de) Handwerkzeugmaschine
DE102022213033A1 (de) Handwerkzeugmaschine
DE102023200535A1 (de) Handwerkzeugmaschine
EP3659754A1 (fr) Machine-outil manuelle
EP3646992A2 (fr) Machine-outil manuelle

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220719

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)