EP3663046A1 - Dispositif tournevis ainsi que procédé de fonctionnement d'un dispositif tournevis - Google Patents

Dispositif tournevis ainsi que procédé de fonctionnement d'un dispositif tournevis Download PDF

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Publication number
EP3663046A1
EP3663046A1 EP18211023.9A EP18211023A EP3663046A1 EP 3663046 A1 EP3663046 A1 EP 3663046A1 EP 18211023 A EP18211023 A EP 18211023A EP 3663046 A1 EP3663046 A1 EP 3663046A1
Authority
EP
European Patent Office
Prior art keywords
bit holder
control electronics
sensor
motor
arrangement
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.)
Granted
Application number
EP18211023.9A
Other languages
German (de)
English (en)
Other versions
EP3663046B1 (fr
Inventor
Andreas Ushakov
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.)
Swedex Industrieprodukte GmbH
Original Assignee
Swedex Industrieprodukte 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 Swedex Industrieprodukte GmbH filed Critical Swedex Industrieprodukte GmbH
Priority to EP18211023.9A priority Critical patent/EP3663046B1/fr
Priority to PL18211023T priority patent/PL3663046T3/pl
Publication of EP3663046A1 publication Critical patent/EP3663046A1/fr
Application granted granted Critical
Publication of EP3663046B1 publication Critical patent/EP3663046B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • 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
    • 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
    • B25B23/0064—Means for adjusting screwing depth

Definitions

  • the present invention relates to a screwdriver arrangement with a housing, a drive arrangement arranged in the housing, which has a motor, in particular an electric motor, a bit holder for fixing a screw bit, which is connected to an output shaft of the drive arrangement in a rotationally fixed but axially displaceable manner relative to it, elastic Resetting means which press the bit holder into an axially forward starting position, a sensor which is designed and / or set up to detect an axial displacement of the bit holder from the starting position against the restoring force of the elastic resetting means and a control electronics , which is coupled to the sensor and the motor in order to switch the motor on and off in dependence on output signals from the sensor.
  • the invention also relates to a method for operating a screwdriver arrangement.
  • Screwdriver arrangements for tightening or loosening screws are generally known. These include a housing, a motor arranged in the housing with an output shaft, a bit holder for fixing a screw bit, which is non-rotatably connected to the output shaft, and a trigger, such as a start lever or start button.
  • the motor is activated by manually actuating or pressing the respective trigger.
  • the motor it is problematic that if the motor is activated before a screw bit received in the bit holder is pressed sufficiently strongly against a screw to be turned, the screw bit turns off during the turning the screw head profile of the screw jumps. This leads to damage or high wear of the screw head profile as well as incorrect or insufficient tightening torque which is exerted on the screw. As a result, a qualitative statement about the tightening torque can no longer be guaranteed.
  • screwdriver arrangements are known from the prior art, in which the triggering of a screwing process takes place in a force-controlled manner.
  • the US5701961 , US4442738 , WO2015 / 123660A1 and CN2815620Y in each case a screwdriver arrangement with a so-called "push-to-start" function, which makes it possible to automatically activate the motor as soon as a screw bit received in the bit holder is pressed against a screw to be rotated with a predetermined contact pressure.
  • the screwdriver arrangement of the CN2815620Y Like the previously mentioned screwdriver arrangements without a "push-to-start” function, it comprises a housing, a motor arranged in the housing with an output shaft and a bit holder for fixing a screw bit. In order to implement the "push-to-start" function, the bit holder is connected to the output shaft in a rotationally fixed but axially displaceable manner.
  • the screwdriver arrangement further comprises a helical compression spring arranged between the output shaft and the bit holder, which presses the bit holder into an axially forward starting position, a digital Hall sensor, which is arranged and formed on the housing, and which is directed backwards into the housing against the restoring force of the helical compression spring to detect axial displacement of the bit holder from its initial position, a magnetic element arranged on the bit holder and a motor control circuit, which is operatively connected to both the motor and the digital Hall sensor, around the motor switch on and off depending on the sensor output signals.
  • a contact pressure is applied to the screw head of a screw to be turned, the bit holder and thus the magnetic element move in the axial direction relative to the digital Hall sensor.
  • the digital Hall sensor As soon as the digital Hall sensor detects the presence of a magnetic field on the digital Hall sensor after a predetermined, covered distance of the magnetic element, ie as soon as a non-zero magnetic field is measured, the digital Hall sensor outputs a digital switching signal to the motor control circuit, whereupon the motor control circuit switches the motor on. As long as a magnetic field is measured, the motor remains activated. As soon as the digital Hall sensor no longer detects the presence of a magnetic field on the digital Hall sensor, ie as soon as a magnetic field is measured to be zero, the digital Hall sensor again outputs a digital switching signal to the motor control circuit, whereupon the motor control circuit switches the motor off. The motor control is therefore only used to switch the motor on or off when a switching signal is received.
  • the distance traveled by the magnetic element i.e. the contact pressure when the digital Hall sensor detects the magnetic field of the magnetic element and the motor is switched on, cannot be varied without either replacing the Hall sensor with a more sensitive or less sensitive Hall sensor or the magnetic element with a magnetic element exchange with a stronger or weaker magnetic field.
  • the invention is therefore based on the object of providing a screwdriver arrangement of the type mentioned at the outset, which makes it possible to set the contact pressure exerted on the bit holder, at which the motor is triggered, without structural changes to the screwdriver arrangement.
  • the invention is therefore based on the idea of creating a motor-driven screwdriver arrangement in which the triggering force, that is to say the pressing force which must be exerted on the bit holder so that the motor is switched on, can be set by means of control electronics.
  • a switching point for the motor can therefore be set as a reference, which corresponds to a desired axial position / length of the axial adjustment path that the bit holder must have reached or exceeded during its rearward axial adjustment in order to switch the motor on can.
  • a set switching point corresponds to the position / length of the axial adjustment path and the spring constant of the restoring means of a desired release force.
  • the sensor detects the length of the axial adjustment path covered and / or the axial position of the bit holder during the axial adjustment of the bit holder.
  • the sensor can be designed and / or set up to record the length / position continuously and / or at predetermined, preferably evenly spaced times.
  • the sensor transmits output signals corresponding to the detected length / position or an output signal which changes corresponding to the detected length / position to the control electronics.
  • This / these output signal / output signals can be evaluated and, in contrast to the switching signals from the prior art, allow a conclusion to be drawn about the contact pressure applied to the screw.
  • the control electronics On the basis of the output signals received from the sensor and the reference previously set on the control electronics, the control electronics is now able to automatically switch on / keep on the motor when the reference is reached or exceeded, but otherwise switch off the motor / keep off.
  • the control electronics thus decide whether or not to trigger the motor based on a previously made user setting or user input on the control electronics.
  • the triggering force can be variably set, for example, depending on the screw bit used, without having to make a structural change to the screwdriver arrangement.
  • a sufficient contact force is always ensured during the screwing process, whereby the risk of the screw bit slipping out during the screwing process is considerably reduced and the quality of the screw connection is increased.
  • a specific value of the output signal is advantageous since it can be compared directly, that is to say without conversion, with a detected output signal.
  • a specific contact pressure, a type of screw bit, a type of screw head profile or another operational characteristic can also be set on the control electronics.
  • the control electronics can be designed and / or set up to automatically set a specific value of the output signal corresponding to the operational characteristic set by a user.
  • the sensor is preferably designed as a magnetic field sensor and a magnetic element attached to the bit holder is assigned to the magnetic field sensor. wherein the magnetic field sensor is designed and / or configured to transmit a signal proportional to the magnetic flux density detected by it as an output signal to the control electronics.
  • the magnetic field sensor can advantageously be an analog magnetic field sensor that transmits an analog signal, such as a current or voltage signal, as an output signal to the control electronics.
  • an analog measurement signal has the greatest possible information content.
  • the magnetic field sensor can be, in particular, an analog Hall sensor.
  • the output signal proportional to the magnetic flux density is a Hall voltage signal.
  • Another type of magnetic field sensor can also be used.
  • the magnetic field sensor can be a field plate, in particular an analog field plate.
  • the magnetic element is advantageously a permanent or permanent magnet, since no power supply is necessary for it.
  • the magnetic element can also be an electromagnet.
  • the magnetic element - which may be annular and then surrounds the bit holder - is preferably arranged between an axially front end of the elastic restoring means and a contact surface of the bit holder, the magnetic element in particular being firmly connected to the bit holder.
  • a ring-shaped magnetic element can also be referred to as a magnetic ring. It is conceivable that the magnetic element comprises several magnets.
  • the sensor can also be designed as an optical sensor.
  • a plurality of optically detectable markings arranged one behind the other in the axial direction on the bit holder are then assigned to the optical sensor.
  • the optical sensor is designed and / or set up to transmit a signal as an output signal to the control electronics which represents a marking detected by it.
  • the senor is arranged at the axial height of the elastic return means, the sensor being preferably separated from the magnetic element or the optically detectable markings and / or the elastic return means in the radial direction only by a cavity filled with ambient air. If a magnetic field sensor is separated from the magnetic element only by air, the magnetic field of the magnetic element is not disturbed or shielded, so that the magnetic field can be detected without problems. Because an optical sensor is only separated from the markings by air, a clear view of the optical sensor on the markings and thus a problem-free optical detection of the markings is ensured.
  • the control electronics can be internal control electronics arranged on the housing, in particular at least partially arranged inside the housing, external control electronics arranged away from the housing and / or a higher-level controller.
  • the control electronics expediently comprise a memory for storing a plurality of predefined references and / or a user interface or a setting and / or input means, in particular a touch-sensitive screen, a jog wheel and / or a membrane keyboard, for setting a reference stored in particular in the memory.
  • a user can display an operational characteristic, such as a specific desired value of the output signal (s), a specific desired contact pressure, set a type of screw bit or a type of screw head profile via the user interface or the setting and / or input means by entering the corresponding operational feature via the user interface or the setting and / or input means or from several stored in the memory and for example selections displayed on the touch screen.
  • control electronics can comprise any other display means.
  • This can be, for example, an optical display device, such as a display, or an acoustic display device.
  • An associated value of the output signal (s) can be stored in the memory in the form of a database for a large number of selectable operational features.
  • the bit holder is connected to the output shaft of the drive arrangement via a coupling arrangement which comprises a coupling element which is arranged in the housing and is detachably fixed to the output shaft of the drive arrangement, and the bit holder is rotatably fixed to the coupling arrangement, but is connected axially displaceable relative to this.
  • the coupling arrangement comprises an outer coupling element which is arranged in the housing and is detachably connected, in particular screwed, to the output shaft of the drive arrangement, and has an inner coupling element which is arranged in the outer coupling element and detachably connected to it, is screwed in particular, the axially rear end of the bit holder being in non-rotatable but axially displaceable engagement with the inner coupling element.
  • the bit holder is fixed to the output shaft of the drive arrangement via the coupling arrangement, with it being one, preferably the inner coupling element is in a rotationally fixed but axially displaceable engagement.
  • the bit holder can have a male coupling member at its axially rear end, which engages with a correspondingly designed female coupling member, which is formed on the coupling arrangement, preferably on a coupling element of the coupling arrangement, in particular on the inner coupling element, by a rotary movement to transmit the coupling arrangement to the bit holder.
  • the male coupling member of the bit holder is preferably designed at its axially rear end in the form of an external hexagon which engages with a female coupling member in the form of a correspondingly designed receptacle on the coupling element.
  • the coupling arrangement can also have only one coupling element. In principle, other suitable shaft-hub connections are also possible for connecting the bit holder to the coupling arrangement.
  • the elastic restoring means are expediently supported axially between a coupling element, in particular the inner coupling element, and the bit holder and / or a magnetic element.
  • the bit holder in the coupling arrangement in particular the outer coupling element, is advantageously guided axially displaceably via a bearing, for example a plain bearing.
  • the sensor can be attached to the housing or the coupling arrangement, in particular the outer coupling element, preferably on the inside of the housing or a coupling element of a coupling arrangement. If, in the case of a magnetic field sensor / optical sensor, the magnetic element / the optically detectable markings are attached to the bit holder is / are, the magnetic field sensor / optical sensor is preferably attached to the coupling arrangement. It is also conceivable to attach the sensor to the bit holder and the magnetic element / the markings on the coupling arrangement or on the housing.
  • the elastic return means comprise at least one helical compression spring and / or disc spring and / or rubber spring, which preferably encompasses / encompasses the bit holder in order to be supported on the inside thereof. This prevents the spring (s) from buckling during compression.
  • other known elastic return means can also be used.
  • the elastic return means can be positioned, for example, within the female coupling member, which is formed on the coupling arrangement, in particular on the inner coupling element. It is also conceivable for the helical compression spring, plate spring and / or rubber spring to be guided both outside the male coupling member of the bit holder and inside the female coupling member of the coupling arrangement.
  • the Figures 1 and 2nd show a screwdriver assembly 1 according to an embodiment of the present invention.
  • the screwdriver arrangement 1 has an electric screwdriver 2 and an external control electronics 3a connected to it.
  • the electric screwdriver 2 comprises a housing 4, which consists of an axially front housing section 4a, a middle housing section 4b and an axially rear housing section 4c.
  • the electric screwdriver 2 comprises a drive arrangement 5 with a motor 5a in the form of an electric motor and a gear 5b connected to the motor 5a and a bit holder 6 which has a bit receptacle 7 at its front end for fixing a screw bit 8.
  • the bit holder 6 is connected to an output shaft, not shown, of the drive arrangement 5, here the output shaft of the transmission 5b, via a clutch arrangement 9.
  • This comprises an outer coupling element 9a, which is essentially hollow cylindrical and is connected to the output shaft in a rotationally fixed manner, and is screwed here. In the Figure 2 the through bores 10a of the outer coupling element 9a can be seen for corresponding fastening screws.
  • the coupling arrangement 9 also has an inner coupling element 9b, which is arranged inside the outer coupling element 9a and detachably connected to it, is screwed here.
  • an inner coupling element 9b which is arranged inside the outer coupling element 9a and detachably connected to it, is screwed here.
  • the corresponding through holes 10b for the connecting screws in the peripheral wall of the outer coupling element 9a are shown.
  • the bit holder 6 is axially displaceably guided in the outer coupling element 9a via a bearing 11 and is axially displaceable but non-rotatably engaged with the inner coupling element 9b.
  • the bit holder 6 has at its axially rear end a male coupling member 12 in the form of an external hexagon, which engages with a female coupling member 13 in the form of a correspondingly designed receptacle in the axially front end section of the inner coupling element 9b.
  • the bit holder 6 is pressed into an axially forward starting position by elastic return means 14 in the form of a helical compression spring.
  • elastic return means 14 in the form of a helical compression spring.
  • a plate and / or rubber spring can also be used.
  • the helical compression spring is supported axially between the front end face 15 of the inner coupling element 9b and a rear end face of the bit holder 6, wherein it is placed on the axially rear end section of the bit holder 6, so that it engages around and is supported by the inside thereof.
  • a housing cap 16 is screwed onto the axially front end of the housing 4 to close it on the front side and is penetrated by the bit holder 6.
  • corresponding threaded sections 17 are formed on the housing cap 16 and the housing 4.
  • the electric screwdriver 2 comprises a measuring device 18 with a magnetic element 19 fastened to the bit holder 6 in the form of a permanent magnet and a sensor 20 in the form of an analog Hall sensor attached to the inside of the outer coupling element 9a at the axial level of the elastic return means 14 Magnetic element 19 is assigned.
  • the magnetic element 19 is annular and is pushed onto the axially rear end section of the bit holder 6, wherein it is positioned axially between the front end of the elastic restoring means 14 and an axial contact surface 21 of the bit holder 6 is.
  • the sensor 20 is separated from the magnetic element 19 and the elastic return means 14 in the radial direction only by ambient air.
  • the electric screwdriver 2 comprises internal control electronics 3b, which together with the external control electronics 3a are referred to as control electronics 3 of the screwdriver arrangement 1.
  • the internal control electronics 3b is arranged within the axially rear housing section 4c.
  • the external control electronics 3a lies outside of the screwdriver 2 and comprises a memory 22 and a user interface 23 in the form of a touch-sensitive screen. In another embodiment, not shown here, any other user interface 23 can also be used.
  • the internal control electronics 3b is connected to the external control electronics 3a at the axially rear end of the housing 4 of the screwdriver 2 via a transmission line 24.
  • the control electronics 3 is coupled to the sensor 20 and the motor 5a in order to switch the motor 5a on and off as a function of output signals from the sensor 20.
  • the sensor 20 and the control electronics 3 are designed and / or set up in such a way that the screwdriver arrangement 1 according to the invention can be operated according to the method explained below.
  • a user can set a switching point for the motor 5a via the user interface 23 as a reference, which corresponds to a desired axial position / length of the axial adjustment path which the bit holder 6 must have reached or exceeded during its rearward axial displacement in order to be able to switch on the motor 5a.
  • the user can have a specific value of the output signal of the sensor 20 designed as a Hall sensor, So set a specific Hall voltage value, a specific contact pressure with which the bit holder 6 is pressed against a screw to be rotated, a type of screw bit, a type of screw head profile or another operational characteristic via the user interface 23 by entering the corresponding operational characteristic or selects from several predefined selection options stored in the memory 22 of the external evaluation electronics 3a. If the user did not enter or select a Hall voltage value, but selected another operational characteristic stored in the memory 22, the external control electronics 3a automatically sets a Hall voltage value corresponding to the selected operational characteristic and stored in the memory 22 as belonging to the characteristic.
  • the sensor 20 detects the length of the axial adjustment path covered and / or the axial position of the bit holder 6 and transmits an output signal corresponding to the detected length / position to the internal control electronics 3b. More specifically, the sensor 20 continuously measures the Hall voltage proportional to the magnetic flux density at the sensor 20 during the axial displacement of the magnetic element 19 and outputs an analog measurement signal, namely an analog Hall voltage signal, as an output signal to the internal control electronics 3b.
  • the internal Control electronics 3b converts the analog measurement signal into a digital measurement signal and forwards this via the transmission line 24 to the external control electronics 3a.
  • the control electronics 3 On the basis of the output signal obtained from the sensor 20 or the digitized output signal received from the internal control electronics 3b and the reference previously set on the external control electronics 3a, the control electronics 3 then automatically switches the motor 5a on or keeps it switched on when the reference is reached or is exceeded.
  • the external control electronics 3a compares the level of the Hall voltage signal with the set Hall voltage value and automatically switches the motor 5a on or keeps it on when the set Hall voltage value is reached or exceeded. Otherwise, it switches the motor 5a off or keeps it switched on.
  • the external control electronics 3a determines a contact pressure from a Hall voltage measured value of the digitized output signal, which is applied to the bit holder 6 and with which the screw bit 8 is applied to the screw head rotating screw is pressed.
  • the axial position of the magnetic element 19 or the spring travel S is first determined on the basis of the rest position of the helical compression spring, which corresponds to the axially forward starting position of the bit holder 6, that is to say the distance by which the helical compression spring has been compressed.
  • the external control electronics 3a then compares the calculated or determined contact pressure with the specific contact pressure previously set on the external control electronics 3a and automatically switches the motor 5a on or keeps it switched on when the set specific contact pressure is reached or exceeded. Otherwise, it switches the motor 5a off or keeps it off.
  • the internal control electronics 3b can only be provided to forward the analog output signal to the external control electronics 3a without converting it.
  • the analog output signal is then digitized for further processing only in the external control electronics 3a.
  • the communication between the internal control electronics 3b and the external control electronics 3a can also take place wirelessly. In this case, the digitization must already take place in the internal control electronics 3b.
  • either the internal control electronics 3b can be omitted and the analog output signal from the sensor 20 can be output directly to the external control electronics 3a, or the external control electronics 3a can be dispensed with and the entire measurement data processing can be carried out by the internal control electronics 3b.
  • the internal control electronics 3b include the memory 22 and the user interface 23, the user interface 23 then preferably being arranged on the outside of the housing 4.
  • the senor 20 is not designed as a magnetic field sensor, but rather as an optical sensor.
  • the magnetic element 19 instead of the magnetic element 19, a plurality of optically detectable markings arranged one behind the other in the axial direction are provided on the bit holder 6.
  • the helical compression spring can be changed in such a way that a clear view of the optical sensor on the markings is made possible.
  • the optical sensor is designed and / or set up to transmit a signal as an output signal to the control electronics 3, which represents a marking detected by it. Otherwise, the mode of operation and the structural design correspond to that of the screwdriver arrangement 1 described above.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP18211023.9A 2018-12-07 2018-12-07 Dispositif tournevis ainsi que procédé de fonctionnement d'un dispositif tournevis Active EP3663046B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18211023.9A EP3663046B1 (fr) 2018-12-07 2018-12-07 Dispositif tournevis ainsi que procédé de fonctionnement d'un dispositif tournevis
PL18211023T PL3663046T3 (pl) 2018-12-07 2018-12-07 Układ wkrętarkowy oraz sposób eksploatacji układu wkrętarkowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18211023.9A EP3663046B1 (fr) 2018-12-07 2018-12-07 Dispositif tournevis ainsi que procédé de fonctionnement d'un dispositif tournevis

Publications (2)

Publication Number Publication Date
EP3663046A1 true EP3663046A1 (fr) 2020-06-10
EP3663046B1 EP3663046B1 (fr) 2021-08-25

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Application Number Title Priority Date Filing Date
EP18211023.9A Active EP3663046B1 (fr) 2018-12-07 2018-12-07 Dispositif tournevis ainsi que procédé de fonctionnement d'un dispositif tournevis

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EP (1) EP3663046B1 (fr)
PL (1) PL3663046T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022227633A1 (fr) * 2021-04-28 2022-11-03 歌尔股份有限公司 Machine de blocage de vis et procédé de commande d'alimentation en vis pour celle-ci

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442738A (en) 1982-03-29 1984-04-17 Standard Pneumatic Motor Co., A Division Of Hamilton Company Automatic push-to-start screwdriver
US5701961A (en) 1996-07-05 1997-12-30 Ingersoll-Rand Company Electronic push to start nutrunner
US6892431B2 (en) * 2000-11-06 2005-05-17 Meikle Ny, Inc. Hand held spin-pull tool for installing threaded inserts and method for using same
CN2815620Y (zh) 2005-08-10 2006-09-13 常熟市东联电器制造有限责任公司 一种无触点电磁感应启动的电动螺丝刀结构
US20070144753A1 (en) * 2005-12-22 2007-06-28 Microtorq, L.L.C. Transducerized rotary tool
US7828077B1 (en) * 2008-05-27 2010-11-09 Jergens, Inc. Rotary angle tool
DE102013100986A1 (de) * 2013-01-31 2014-07-31 C. & E. Fein Gmbh Schrauber mit elektronischer Tiefenabschaltung
US20150122523A1 (en) * 2013-11-07 2015-05-07 Makita Corporation Power tool
WO2015123660A1 (fr) 2014-02-17 2015-08-20 Vidacare LLC Commande motorisée actionnée par une force sur un arbre de transmission et trousses, composants et procédés associés

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009007977B4 (de) * 2009-02-06 2019-10-31 Hilmar Konrad Handwerkzeugmaschine mit Drehratensensor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442738A (en) 1982-03-29 1984-04-17 Standard Pneumatic Motor Co., A Division Of Hamilton Company Automatic push-to-start screwdriver
US5701961A (en) 1996-07-05 1997-12-30 Ingersoll-Rand Company Electronic push to start nutrunner
US6892431B2 (en) * 2000-11-06 2005-05-17 Meikle Ny, Inc. Hand held spin-pull tool for installing threaded inserts and method for using same
CN2815620Y (zh) 2005-08-10 2006-09-13 常熟市东联电器制造有限责任公司 一种无触点电磁感应启动的电动螺丝刀结构
US20070144753A1 (en) * 2005-12-22 2007-06-28 Microtorq, L.L.C. Transducerized rotary tool
US7828077B1 (en) * 2008-05-27 2010-11-09 Jergens, Inc. Rotary angle tool
DE102013100986A1 (de) * 2013-01-31 2014-07-31 C. & E. Fein Gmbh Schrauber mit elektronischer Tiefenabschaltung
US20150122523A1 (en) * 2013-11-07 2015-05-07 Makita Corporation Power tool
WO2015123660A1 (fr) 2014-02-17 2015-08-20 Vidacare LLC Commande motorisée actionnée par une force sur un arbre de transmission et trousses, composants et procédés associés

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022227633A1 (fr) * 2021-04-28 2022-11-03 歌尔股份有限公司 Machine de blocage de vis et procédé de commande d'alimentation en vis pour celle-ci

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Publication number Publication date
PL3663046T3 (pl) 2022-01-10
EP3663046B1 (fr) 2021-08-25

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