EP3439830B1 - Procédé de commande d'une visseuse à percussion - Google Patents

Procédé de commande d'une visseuse à percussion Download PDF

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Publication number
EP3439830B1
EP3439830B1 EP17713969.8A EP17713969A EP3439830B1 EP 3439830 B1 EP3439830 B1 EP 3439830B1 EP 17713969 A EP17713969 A EP 17713969A EP 3439830 B1 EP3439830 B1 EP 3439830B1
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EP
European Patent Office
Prior art keywords
impact
anvil
angle
operating mode
hammer
Prior art date
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Active
Application number
EP17713969.8A
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German (de)
English (en)
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EP3439830A1 (fr
Inventor
Christian WOETZL
Dario BRALLA
Matthaeus ALBERDING
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.)
Hilti AG
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Hilti AG
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Publication date
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Publication of EP3439830A1 publication Critical patent/EP3439830A1/fr
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Classifications

    • 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
    • B25B21/026—Impact clutches
    • 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 control method for an impact wrench for fastening steel structural elements by means of screw connections as shown in FIG DE 694 00 774 T2 known.
  • the control method includes two operating modes which are executed in response to a position of a selector switch.
  • the first operating mode includes the following steps: Making initial blows of the hammer on the anvil; Detecting the event of an impact of the hammer on the anvil with an impact sensor; Detecting an angular position of the anvil with an angle sensor; Estimating a single impact angle of the anvil from the most recently recorded impact based on the angular position of the anvil before the most recently recorded impact and the angular position of the anvil after the most recently recorded impact and comparing the single impact angle with a target single impact angle.
  • the first operating mode is ended when the single lay angle falls below a single lay target angle.
  • the second operating mode provides the following steps: detecting the angular position of the anvil with the angular sensor as the starting position; Making second blows of the hammer on the anvil; and detecting a relative angle of rotation of the anvil to the starting position during the second strikes.
  • the second operating mode is ended when the relative angle of rotation exceeds a standard angle.
  • the combined control methods are both unsuitable for securely fastening steel construction elements with screwing elements, for example screws, bolts, nuts, using an electromechanical impact wrench.
  • the combination of the two methods enables the screw elements to be tightened reliably with the limited sensory means of an impact wrench.
  • One embodiment provides for a rotational movement of the machine housing to be detected with a rotational movement sensor during the second operating mode and the relative rotational angle to be determined based on the angular position of the anvil and the rotational movement of the machine housing.
  • pivoting movements of the impact wrench by the user are preferably taken into account when determining the switch-off criterion.
  • One embodiment provides that, during the first operating mode, a predetermined number of third blows are carried out with the hammer after the target single blow angle is undershot. If a selected screw connection requires very small single stroke target angles, the method can approximately be ended at a higher single stroke target angle and supplemented by a fixed number N of strokes.
  • the single beat angle to the first beat can be determined and compared with the single beat target angle. If the single lay angle exceeds the single lay target angle, the second operating mode is canceled. The screw connection and possibly neighboring screw connections are not yet properly tightened in the first operating mode.
  • the setting of the screw connections can log the first operating mode and the second operating mode individually for each screw.
  • Fig. 1 shows schematically the structure of an impact wrench 1.
  • One application of the impact wrench 1 is screwing a steel plate 2 onto a steel girder 3.
  • the steel plate 2 and the steel girder 3 are connected to one another by a screw 4 and a nut 5.
  • the typical steel plates and steel girders have undefined curved surfaces which, when screwed together, exert a counterforce like a steel spring.
  • the impact wrench 1 supports the user in a secure screw connection.
  • the steel plate should lie flat against the steel beam and the screw 4 should not be overstretched.
  • the screw 4 or the nut 5 are tightened in two phases.
  • the screw head of the screw 4 is advantageously fixed and the nut 5 is tightened.
  • the nut 5 is tightened until the screw 4 is stretched to approximately 40% to 60% of its elastic limit.
  • the elongation is not measured directly, but estimated by a single stroke angle theta through which the nut 5 rotates with a single stroke. It was recognized that for the targeted range of the yield point, ie 40% to 60%, the single lay angle theta is largely solely dependent on the screw 4 and the nut 5 , and only to a small extent on the unknown stresses of the steel girder 3 and the Steel plate 2 are.
  • an upper limit is determined in test series for each screw type, i.e.
  • a subsequent second phase the nut 5 is tightened until the screw 4 is stretched to approximately 70% to 80% of its elastic limit.
  • the elongation is not measured directly, but is estimated by a relative angle of rotation dphi of the nut 5 with respect to the screw 4. It was recognized that this expansion can no longer be determined with sufficient accuracy by means of the single lay angle theta .
  • the a priori unknown influences e.g. scattering coefficients of friction, individual properties of the Steel plate 2 etc., the dependence of the single lay angle theta on the elongation dominate.
  • the relative rotation angle dphi is a robust measure for the expansion from the expansion already achieved through the first phase.
  • an upper limit (standard angle dPhibz) is determined in test series for each screw type, i.e. depending on the diameter, length, thread pitch, material pairing of screw 4 and nut 5 etc. It can be advantageous to set the standard angle dPhi as a function of the total thickness of the steel beam 3 and the steel plate 2 to be determined.
  • the relative angle of rotation is determined from the beginning of the second phase, eg set to zero at the beginning of the second phase.
  • the nut 5 is tightened by turning it by the standard angle dPhi.
  • the step-by-step tightening of the screw 4 proves to be tolerant of different tensions between the steel plate 2 and the steel girder 3. A possible overstretching of the screw 4 by tightening it in one step up to a predetermined torque can be avoided.
  • the impact wrench 1 has an electric motor 7, an impact mechanism 8 and an output spindle 9.
  • the impact mechanism 8 is continuously driven by the electric motor 7.
  • a retroactive torque M of the output spindle 9 exceeds a load value M0
  • the percussion mechanism 8 periodically exerts impacts on the output spindle 9 with a brief but very high torque.
  • the output spindle 9 rotates accordingly initially continuously and then gradually around a working axis 10.
  • the electric motor 7 can be fed via a battery 11 or can be mains-fed.
  • the impact wrench 1 has a handle 12 by means of which the user can hold and guide the impact wrench 1 during operation.
  • the handle 12 can be attached to a machine housing 13 in a rigid manner or by means of damping elements.
  • the electric motor 7 and the hammer mechanism 8 are arranged in the machine housing 13 .
  • the electric motor 7 can be switched on and off by means of a button 14.
  • the button 14 is arranged, for example, directly on the handle 12 and can be actuated by the hand surrounding the handle.
  • the impact wrench 1 has an operating mode switch 15 for switching between a first operating mode and a second operating mode.
  • the striking mechanism 8 has a hammer 16 and an anvil 17.
  • the hammer 16 has claws 18 which rest against claws 19 of the anvil 17 in the direction of rotation.
  • the hammer 16 can transmit a continuous torque or brief rotary impulses to the anvil 17 via the claws 18 .
  • a coil spring 20 tensions the hammer 16 in the direction of the anvil 17 , whereby the hammer 16 is held with the anvil 17 in engagement. If the torque exceeds the threshold value, the hammer 16 is displaced against the force of the helical spring 20 until the claws 18 are no longer in engagement with the anvil 17 .
  • the electric motor 7 can accelerate the hammer 16 in the direction of rotation until the hammer 16 is again forced into engagement with the anvil 17 by the helical spring 20. The meanwhile obtained kinetic energy is transferred by the hammer 16 to the anvil 17 in a short pulse.
  • One embodiment provides that the hammer 16 is positively guided on a drive spindle 21 along a spiral path 22 .
  • the positive guidance can be implemented, for example, as a spiral recess in the drive spindle 21 and a pin of the hammer 16 engaging in the recess.
  • the drive spindle 21 is driven by the electric motor 7 .
  • the output spindle 9 protrudes from the machine housing 13 .
  • the protruding end forms a tool holder 23.
  • the tool holder 23 has a square cross-section.
  • a socket 24 or a similar tool can be plugged onto the tool holder 23 .
  • the socket 24 has a socket 25 with a square, hollow cross-section, the dimensions of which essentially correspond to the tool holder 23.
  • the socket 24 has a mouth 26 for receiving the hexagonal screw 4 or a hexagonal nut.
  • the impact wrench 1 has an impact sensor 27 for detecting impacts.
  • the impact sensor 27 is, for example, an acceleration sensor 28 or a microphone.
  • the blows lead to a vibration of the impact wrench 1 with a characteristic signature.
  • the amplitude of the detected acceleration or the volume of the detected noises can be compared with a limit value.
  • the impact sensor 27 includes an evaluation of the power consumption of the electric motor 7.
  • the power consumption shows a characteristic brief jump in the power consumption when the hammer 16 hits the anvil 17.
  • the impact sensor 27 can, for example, filter the power consumption signal by means of a high-pass filter and compare it with a limit value. Instead of or in addition to the power consumption, brief changes in the rotary movement of the hammer 16 or the electric motor 7 can be detected. During the impact, the speed U of the electric motor 7 is reduced, for example, for a short time.
  • the impact wrench 1 has an angle sensor 29 for detecting an angular position phi of the anvil 17 or of the tool holder 23.
  • the angle sensor 29 can directly detect the angular position phi of the anvil 17.
  • optically detectable markings for example grooves, can be embossed on the anvil 17.
  • the angle sensor 29 is based on an optical sensor system which detects the markings.
  • the angle sensor 29 can estimate the progress of the angular position phi of the tool holder 23.
  • the angle sensor 29 estimates, for example, the angular position phi based on the rotary movement of the drive spindle 21 during the period between two strokes.
  • the hammer 16 and the anvil 17 were in the meantime disengaged exactly once.
  • the anvil 17 does not rotate during the missing intervention.
  • the next engagement occurs when the pawls 18, 19 are rotated back into an engaging position.
  • These positions are typically offset from one another by the angular spacing of the claws 18 of the hammer 16.
  • the anvil 17 has rotated by this angular distance less than the hammer 16 during the period between two blows.
  • the rotary movement of the hammer 16 can be detected directly on the hammer 16, the drive spindle 21 or indirectly on the electric motor 7 .
  • the device control 30 detects the position of the operating mode switch 15.
  • the device control 30 executes a first operating mode or a second operating mode according to the position of the operating mode switch.
  • the first operating mode can begin with an optional preliminary phase.
  • the screw 4 rotated continuously.
  • the impact wrench 1 rotates the tool holder 23 at a continuous speed U, which is equal to the speed Uh of the hammer 16 (step S1 ).
  • the speed U can be specified by the user via the button 14 or can be stored as a specified value in the device control 30.
  • the impact wrench 1 can lower the speed Uh of the hammer 16 in order to suppress the impact mechanism from hitting.
  • the speed Uh can be reduced down to a minimum value.
  • An angular position phi of the tool holder 23 increases continuously. The continuous turning enables a high working speed.
  • the impact wrench 1 stops the continuous rotation of the tool holder 23 as soon as the retroactive torque M on the tool holder 23 exceeds a predetermined load value M0 (step S2 ).
  • the impact wrench 1 changes automatically to an impacting operation.
  • the change is preferably implemented by the mechanical structure of the impact wrench 1 .
  • the load value M0 is specified by the spring strength of the helical spring 20 and the inclination of the track 22.
  • the load value M0 can be varied, for example, by means of an adjustable preload of the helical spring 20.
  • the impact wrench 1 strikes the hammer 16 repeatedly in the direction of rotation 31 on the anvil 17 (step S3 ).
  • the angular position phi of the tool holder 23 now changes discontinuously, ie gradually.
  • the anvil 17 rotates through each individual impact through a single impact angle theta in the direction of rotation 31.
  • the anvil 17 rests between the impacts.
  • the single impact angle theta is dependent on the counter-torque of the nut 5.
  • the impact energy is preferably constant.
  • the counter-torque of the nut 5 increases with the progressive tightening of the nut 5 , so the single lay angle theta is reduced.
  • the single beat angle theta can decrease uniformly and monotonously. However, there can also be jumps in the single-stroke angle theta .
  • An interim increase in the single lay angle theta is also possible if, for example, the steel plate 2 relaxes.
  • the point in time at the impact events H1, H2, Hn of a strike is indefinite a priori.
  • the single impact angle theta is recorded for each individual impact.
  • the impact sensor 27 detects when or whether an impact occurs (step S4 ).
  • the angle sensor 29 continuously detects the angular position phi of the anvil 17 (step S5 ).
  • the device control 30 determines the single impact angle theta of the anvil 17 by each individual impact (step S6 ) based on the angular position phi before and after the respective impact.
  • the single impact angle theta is compared with a single impact setpoint angle theta (step S7).
  • the first operating mode changes.
  • the impact wrench 1 ends the first operating mode and deactivates the electric motor 7.
  • a fixed number N of impacts is carried out (step S8 ).
  • the number N is in the range between 5 beats and 20 beats. Striking with a fixed number N is particularly advantageous if the single strike target angle theta specified by the screw 4 is below the resolution limit of the available sensors. It was recognized that in this case, from the prestress that has already been reached, a fixed The number N of strokes is more robust to influences unknown a priori, for example in comparison to the relative angle of rotation dphi.
  • the impact wrench 1 terminates the first operating mode and deactivates the impact mechanism 8, for example by switching off the electric motor 7 (step S9 ).
  • the target single-stroke angle Theta and, if applicable, the fixed number N of strokes can be stored in a memory 32 for different fastening elements 4.
  • the user selects the fastening element 4 via an operating element 33 on the impact wrench 1 or a console 34 that communicates externally with the impact wrench 1 .
  • the device control 30 adjusts the target single stroke angle Theta and, if necessary, the fixed number N of strokes for the control method of the first phase according to the choice of the user.
  • the second operating mode or second phase can begin with a test of the elongation that has already been achieved.
  • the impact wrench 1 strikes a few times, for example once to three times (step S11 ).
  • the impact wrench 1 detects the single impact angle theta (step S12 ) .
  • the detection of the single lay angle theta can take place as described above.
  • the single impact angle theta is compared with the single impact setpoint angle theta (step S13). If the single stroke angle theta does not fall below the assigned single stroke target angle Theta , the device control 30 aborts the second operating mode and issues a warning to the user (step S14 ).
  • the user is preferably asked to tighten the screws according to the first mode of operation. If the target single stroke angle Theta is not reached, the actual second operating mode begins.
  • the current angular position phi of the anvil 17 is recorded and stored as the starting position Phi (step S15 ).
  • the starting position Phi is preferably recorded before the test in order to also record the rotation that has taken place during the test for the subsequent method.
  • the impact wrench 1 applies blows to the anvil 17 (step S16 ).
  • the angle sensor 29 detects the current angular position phi of the anvil 17 (step S17 ).
  • the current angular position phi is continuously compared with the starting position Phi .
  • the current relative rotation angle dphi is determined from the current angular position phi based on the starting position Phi.
  • the relative angle of rotation dphi is, for example, simply the difference between the current angular position phi of the anvil 17 and the starting position Phi.
  • the current relative angle of rotation dphi is compared with the standard angle dPhi .
  • step S18 the device control 30 stops the hammer mechanism 8, for example by deactivating the electric motor 7 (step S19 ) .
  • the screw 4 is now tightened up to the final stretch.
  • the impact wrench 1 has, for example, a rotary motion sensor 35 for determining an angular speed about the working axis 10 based on the Coriolis force or an acceleration sensor for determining rotary accelerations about the working axis 10.
  • the device control 30 determines an angle omega by which the impact wrench 1 is based on the rotary motion has rotated about the working axis 10.
  • the current angular position phi of the anvil 17 is corrected by the angle omega (step S20 ).
  • the standard angle dPhi can be stored in a memory 32 for various fastening elements 4.
  • the user selects the fastening element 4 via an operating element 33 on the impact wrench 1 or a console 34 external to the impact wrench 1 .
  • the device control 30 adjusts the standard angle dPhi for the control method of the second phase according to the user's choice.
  • the external console 34 has an interface 36 for wireless communication, which can communicate with a corresponding interface 37 of the impact wrench 1 .
  • the external console 34 contains , for example, the database 38 with parameters such as single stroke target angle theta and standard angle dPhi for different fasteners, screws, etc ..
  • the external console 34 can be implemented, for example, by a software application on a conventional mobile device, such as a smartphone .
  • the tightening of the screw 4 with the first operating mode and the second operating mode is preferably automatically logged for each screw 4.
  • the protocol records, for example, the point in time at which a screw 4 with the first Operating mode and on which the screw 4 was tightened with the second operating mode. From this it can be seen, for example, whether, as desired, all the screws on a steel beam 3 are first tightened with the first operating mode before the first of the screws is tightened to the final extension with the second operating mode.
  • the impact wrench 1 can assign the protocol to the individual screws, for example based on their position in space.
  • a tracking device 39 detects the position of the impact wrench 1 in space, which is essentially the same as the position of the screw 4 in the space.
  • the tracking device 39 can communicate with a corresponding interface 37 of the device controller 30 via a wireless interface 40. Alternatively, the tracking device 39 transmits the position to the external console 34.
  • a database 38 for recording the log can be provided in the impact wrench 1 or in the console 34 .

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

Claims (8)

  1. Procédé de commande pour une clé à chocs portable (1) destinée à fixer des éléments structurels en acier au moyen d'assemblages vissés, qui présente une poignée (12), un moteur électrique (7), un impacteur (16) entraîné par le moteur électrique (7), une enclume (17) pour recevoir des chocs de l'impacteur (16) agissant dans une direction périphérique (31), un porte-outil (23) disposé sur l'enclume (17) et un sélecteur de mode (15), comprenant les étapes consistant à :
    exécuter un premier mode de fonctionnement si le sélecteur de mode (15) se trouve dans une première position, dans lequel, pendant le premier mode de fonctionnement, des premiers chocs de l'impacteur (16) sont appliqués sur l'enclume (17),
    le résultat d'un choc de l'impacteur (16) sur l'enclume (17) est détecté par un capteur de choc (27),
    une position angulaire (phi) de l'enclume (17) est détectée par un capteur d'angle (29), un angle de choc individuel (thêta) de l'enclume (17) par le choc détecté en dernier est estimé sur la base de la position angulaire (phi) de l'enclume (17) avant le choc détecté en dernier et de la position angulaire (phi) de l'enclume (17) après le choc détecté en dernier,
    l'angle de choc individuel (thêta) est comparé avec un angle théorique de choc individuel (Thêta),
    le premier mode de fonctionnement est terminé lorsque l'angle de choc individuel (thêta) soupasse un angle théorique de choc individuel (Thêta),
    et exécuter un deuxième mode de fonctionnement si le sélecteur de mode (15) se trouve dans une deuxième position, dans lequel, pendant le deuxième mode de fonctionnement,
    la position angulaire (phi) de l'enclume (17) est détectée par le capteur d'angle (29) comme la position initiale (Phi) avant les deuxièmes chocs,
    appliquer des deuxièmes chocs de l'impacteur (16) sur l'enclume (17), dans lequel, pendant les deuxièmes chocs, un angle de rotation (dphi) de l'enclume (17) par rapport à la position initiale (Phi) est déterminé, et
    le deuxième mode de fonctionnement est terminé lorsque l'angle de rotation relatif (dphi) dépasse un angle normal (dPhi),
    dans lequel le deuxième mode de fonctionnement applique au moins un premier choc avant l'application des deuxièmes chocs, détermine l'angle de choc individuel (thêta) par rapport au premier choc, et le compare avec l'angle théorique de choc individuel (Thêta), et dans lequel, lorsque l'angle de choc individuel (thêta) dépasse l'angle théorique de choc individuel (Thêta), le deuxième mode de fonctionnement est abandonné.
  2. Procédé de commande selon la revendication 1, caractérisé en ce que l'événement d'un choc est détecté au moyen d'un capteur d'accélération ou d'un microphone.
  3. Procédé de commande selon la revendication 1, caractérisé en ce que des variations de la puissance absorbée du moteur électrique (7) ou du régime du moteur électrique (7) sont détectées, et un instant où survient une brève variation dépassant une valeur seuil est attribué à un événement d'un choc.
  4. Procédé de commande selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un mouvement de rotation de l'impacteur (16) et un nombre des chocs sont détectés, et la position angulaire (phi) de l'enclume (17) est déterminée sur la base du mouvement de rotation de l'impacteur (16) et du nombre des chocs.
  5. Procédé de commande selon la revendication 4, caractérisé en ce qu'un mouvement de rotation du moteur électrique est déterminé pour détecter le mouvement de rotation de l'impacteur (16).
  6. Procédé de commande selon la revendication 4 ou 5, caractérisé en ce qu'un mouvement de rotation de la poignée (12) est détecté par un capteur de mouvement de rotation (35), et l'angle de rotation relatif (dphi) est déterminé sur la base de la position angulaire (phi) de l'enclume (17) et du mouvement de rotation de la poignée (12).
  7. Procédé de commande selon l'une quelconque des revendications précédentes, caractérisé en ce qu'immédiatement après les premiers chocs, un nombre prédéfini de troisièmes chocs est appliqué par l'impacteur (16).
  8. Procédé de commande selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier mode de fonctionnement et le deuxième mode de fonctionnement sont enregistrés, enregistrés individuellement pour chaque vis (4).
EP17713969.8A 2016-04-04 2017-03-29 Procédé de commande d'une visseuse à percussion Active EP3439830B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16163630 2016-04-04
PCT/EP2017/057402 WO2017174415A1 (fr) 2016-04-04 2017-03-29 Procédé de commande d'une clé à choc

Publications (2)

Publication Number Publication Date
EP3439830A1 EP3439830A1 (fr) 2019-02-13
EP3439830B1 true EP3439830B1 (fr) 2021-06-16

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US (1) US11465263B2 (fr)
EP (1) EP3439830B1 (fr)
WO (1) WO2017174415A1 (fr)

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EP3501740A1 (fr) 2017-12-20 2019-06-26 HILTI Aktiengesellschaft Procédé de pose pour raccord à vis au moyen de clé à percussion
EP3501741A1 (fr) * 2017-12-20 2019-06-26 HILTI Aktiengesellschaft Procédé de pose pour raccord à vis au moyen de clé à percussion
FR3087371B1 (fr) * 2018-10-18 2021-02-12 Renault Georges Ets Procede de vissage a impulsions a rebond optimise
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JP7450221B2 (ja) * 2020-07-31 2024-03-15 パナソニックＩｐマネジメント株式会社 インパクト工具、インパクト工具の制御方法及びプログラム
EP4192654A4 (fr) 2020-08-05 2024-08-07 Milwaukee Electric Tool Corp Outil à percussion rotatif
DE102020215988A1 (de) * 2020-12-16 2022-06-23 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Betrieb einer Handwerkzeugmaschine
JP2022106194A (ja) * 2021-01-06 2022-07-19 株式会社マキタ インパクト工具
TWI842451B (zh) * 2023-03-23 2024-05-11 瞬豐實業股份有限公司 手工具操作管理裝置
EP4438230A1 (fr) * 2023-03-30 2024-10-02 Hilti Aktiengesellschaft Clé à chocs et procédé de commande d'une clé à chocs

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WO2017174415A1 (fr) 2017-10-12
US11465263B2 (en) 2022-10-11
US20190118353A1 (en) 2019-04-25

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