EP4140650A1 - Verfahren zum betreiben eines trockenbauschraubers, computerprogramm und trockenbauschrauber - Google Patents

Verfahren zum betreiben eines trockenbauschraubers, computerprogramm und trockenbauschrauber Download PDF

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Publication number
EP4140650A1
EP4140650A1 EP22191407.0A EP22191407A EP4140650A1 EP 4140650 A1 EP4140650 A1 EP 4140650A1 EP 22191407 A EP22191407 A EP 22191407A EP 4140650 A1 EP4140650 A1 EP 4140650A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
individual pulses
screw
rotation
pulses
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
EP22191407.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Frank Matheis
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP4140650A1 publication Critical patent/EP4140650A1/de
Pending legal-status Critical Current

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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
    • 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
    • B25B21/002—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose for special purposes
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49764—Method of mechanical manufacture with testing or indicating
    • Y10T29/49771—Quantitative measuring or gauging
    • Y10T29/49773—Quantitative measuring or gauging by radioactive tracing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49764—Method of mechanical manufacture with testing or indicating
    • Y10T29/49778—Method of mechanical manufacture with testing or indicating with aligning, guiding, or instruction
    • Y10T29/4978—Assisting assembly or disassembly

Definitions

  • the invention relates to a method for operating a drywall screwdriver, with an electric motor of the drywall screwdriver being driven by means of a plurality of individual pulses spaced apart in time, according to the preamble of claim 1.
  • the invention also relates to a computer program.
  • the invention also relates to a drywall screwdriver, having an electric motor and a control device, the control device being set up and electrically connected to the electric motor in order to drive the electric motor by means of a plurality of individual pulses spaced apart in time, according to the preamble of claim 12.
  • Power tools such as drill drivers or cordless screwdrivers are generally used to actuate or countersink the screws.
  • drill drivers With conventional drill drivers, however, it is comparatively difficult for the user to influence the countersinking of the screw in a controlled manner. This often means that the screw does not end up flat, for example it penetrates too deeply into the workpiece or the screw head still protrudes from the surface of the workpiece.
  • resetting a screw that has already been partially screwed in is usually difficult to control, since the starting torque can be comparatively high and then fast can decrease, which is why the user can no longer stop the screwing process in good time before the screw has finally screwed too deep into the workpiece.
  • the known drywall screwdrivers have, for example, a mechanical depth stop.
  • a mechanical depth stop it has been shown that even with a mechanical depth stop, the screwing process sometimes does not lead to a satisfactory result, particularly if the user of the drywall screwdriver does not align the drywall screwdriver sufficiently orthogonally to the panel-shaped component.
  • drywall screwdrivers which have a so-called “pulse mode”.
  • the electric motor of the drywall screwdriver is driven by means of a plurality of individual pulses spaced apart in time, which allows the user to influence the countersinking of the screw in the workpiece in pulses and thus in a more controllable manner.
  • the user has enough time between the individual pulses to check the screwdriving result and, if necessary, to interrupt the screwdriving process.
  • the object of the present invention is to provide a method for operating a drywall screwdriver that gives the user better control over the countersinking of a screw, in particular to insert a screw with high precision to a specified depth to screw in the workpiece.
  • the present invention is also based on the object of providing an advantageous computer program for carrying out such a method.
  • the object is achieved for the method with the features listed in claim 1.
  • the object is achieved by the features of claim 11.
  • the object is achieved by the features of claim 12.
  • a method for operating a drywall screwdriver is provided, with an electric motor of the drywall screwdriver being driven by means of a plurality of individual pulses spaced apart in time in order to enable a user to influence the countersinking of a screw in a workpiece in pulsed fashion.
  • the user By operating the electric motor by means of the time-spaced individual pulses, the user is given sufficient time to assess between each of the individual pulses whether or not another individual pulse is required to countersink the screw. The user can thus, if necessary, stop the screwing process in good time.
  • a screwdriving tool that is mechanically coupled to the electric motor and can be brought into engagement with the screw (e.g. a screw bit that can be brought into engagement with a screw head of the screw) is moved further by a predetermined angle of rotation with each of the individual pulses.
  • the screwing tool can preferably be releasably or interchangeably connected to the drywall screwdriver, for example to a drive shaft of the drywall screwdriver, which is driven by a rotor of the electric motor directly or via a gear.
  • a path-controlled pulse mode is provided for the drywall screwdriver in order to countersink screw heads in a particularly controlled manner.
  • the repositioning of a screw can be improved according to the invention.
  • the amplitude and/or duration of the individual pulses are determined independently of the actual torque of the screwing process.
  • the actuation of the electric motor can therefore be independent of the actual torque.
  • the amplitude and/or duration of the individual pulses are determined exclusively in a path-controlled manner as a function of the angle of rotation of the screwing tool.
  • the current actual angle of rotation of the screwing tool can be determined at the beginning of each individual pulse (if this is not already known) and the electric motor can only be driven until a target angle of rotation is reached in order to turn the screwing tool by the specified angle of rotation (difference between the target Angle of rotation and the actual angle of rotation) to move on. This process can be repeated for each individual pulse.
  • the specified angle of rotation is identical for all individual pulses.
  • an angle of rotation that is identical for all individual pulses can be advantageous in order to give the user a good control effect and influence on the screwing process.
  • the specified angle of rotation differs between the individual pulses.
  • the angle of rotation is reduced with each individual pulse in order to enable the user to control the screw with increasing depth (or as the screw head approaches the workpiece) with increasing precision.
  • the individual pulses are rectangular or at least essentially rectangular. In principle, however, a different pulse shape can also be provided, for example a triangular individual pulse.
  • the individual pulses in particular the rectangular individual pulses, preferably have a ramped rise (soft start) and/or a ramped fall.
  • the time interval between the successive individual pulses is increased over time in order to give the user more and more time to appreciate the screwing result in question as the depth of screwing-in increases (or as the screw head approaches the workpiece). Check and, if necessary, stop the screwing process.
  • successive individual pulses are spaced apart from one another by between 0.1 seconds and 4.0 seconds, preferably by 0.5 seconds to 2.0 seconds, for example by 1.0 seconds to 1.5 seconds are.
  • the time spacing of the individual pulses can in particular be selected such that the user has sufficient time between the individual pulses to detect the screw-in depth optically or in some other way and, if necessary, to interrupt the screwing process before another individual pulse follows.
  • the length of time between the individual pulses can optionally also be adjustable, for example via a potentiometer that is accessible to the user and can be operated.
  • measured values of a position sensor of the electric motor are used to detect the angle of rotation of the screwing tool, which detects the position of a rotor of the electric motor relative to a stator of the electric motor.
  • the detection of the angle of rotation in the electric motor, in the area of the electric motor or on the drive shaft has proven to be particularly suitable. In principle, however, the angle of rotation can also be detected on the screwing tool itself.
  • Any sensors can be suitable for detecting the angle of rotation, for example yaw rate sensors or rotary encoders, in particular incremental encoders or absolute value encoders.
  • a brushless DC motor is used as the electric motor.
  • a brushless DC motor can be advantageous because brushless DC motors can be used particularly efficiently with battery-operated power tools and because brushless DC motors also usually already have a corresponding sensor system for detecting the position of the rotor relative to the stator, whereby the angle of rotation for the inventive Process using the existing sensors can be detected particularly easily.
  • a defined number of motor steps of the brushless DC motor can preferably be run with each individual pulse.
  • a mechanical depth stop is provided for the drywall screwdriver.
  • a combination of a depth stop with the suggested impulse mode can further improve the precision when driving the screw.
  • the invention is therefore particularly advantageous for use with a drywall screwdriver that has a corresponding depth stop.
  • the inventive method is particularly suitable for use in drywall for screwing screws into plasterboard or wood panels.
  • the invention also relates to a computer program, comprising control commands which, when the program is executed by a control device, cause the latter to carry out the method according to the above and subsequent statements.
  • the control device can preferably be a control device of the drywall screwdriver.
  • the control device can be designed in particular as a microprocessor. Instead of a microprocessor, any other device for implementing the control device can also be provided, for example one or more arrangements of discrete electrical components on a printed circuit board, a programmable logic controller (PLC), an application-specific integrated circuit (ASIC) or another programmable circuit, for example also a field programmable gate array (FPGA) and/or a programmable logic array (PLA).
  • PLC programmable logic controller
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • PLA programmable logic array
  • the invention also relates to a drywall screwdriver, having an electric motor and a control device, the control device being set up and electrically connected to the electric motor in order to drive the electric motor by means of a plurality of individual pulses spaced in time, in order to enable a user to influence the countersinking of a screw in a workpiece in pulses to allow.
  • the control device is set up to move a screwing tool, which can be mechanically coupled to the electric motor and which can be brought into engagement with the screw, further by a predetermined angle of rotation with each of the individual pulses.
  • the proposed drywall screwdriver can thus have a path-controlled impulse mode or a path-controlled impulse function and thereby enable a defined and particularly controllable screwing in and/or repositioning of screws. Incorrect screw connections in the form of screws screwed in too deeply can advantageously be avoided.
  • the values and parameters described here are deviations or fluctuations of ⁇ 10% or less, preferably ⁇ 5% or less, more preferably ⁇ 1% or less, and very particularly preferably ⁇ 0.1% or less of the respectively named Include value or parameter, provided that these deviations are not excluded in the implementation of the invention in practice.
  • the specification of ranges by means of initial and final values also includes all those values and fractions that are enclosed by the range specified in each case, in particular the initial and final values and a respective mean value.
  • FIG. 1 shows a drywall screwdriver 1 according to the invention according to an embodiment of the invention in a schematic representation.
  • a battery-powered drywall screwdriver 1 that can have a replaceable battery pack 2 is shown as an example.
  • the drywall screwdriver 1 also has an electric motor 3 and a control device 4 .
  • a rotor (not shown) of the electric motor 3 is connected via a drive shaft 5 to a tool holder 6 in which a screwing tool 8 that can be brought into engagement with a screw 7 is fastened.
  • the drywall screwdriver 1 can be actuated by a user by means of an actuating switch 9 in order to screw the screw 7 into a workpiece 10 or countersink it into a workpiece 10 in as controlled a manner as possible.
  • the control device 4 is set up and electrically connected to the electric motor 3 in order to drive the electric motor 3 by means of a plurality of individual pulses 11 spaced apart in time in order to enable the user to influence the countersinking of the screw 7 in the workpiece 10 in pulses.
  • the screwing tool 8 is moved further by a predetermined, defined angle of rotation ⁇ with each of the individual pulses 11 .
  • a computer program which includes suitable control commands can be executed on the control device 4 .
  • time-spaced individual pulses 11 for driving the electric motor 3 are shown by way of example in figure 2 shown.
  • the amplitude P and/or duration t n of the individual pulses 11 can be determined independently of the actual torque of the screwing process.
  • the amplitude P and/or the duration t n of the individual pulses 11 are exclusively path-controlled and determined as a function of the intended angle of rotation ⁇ of the screwing tool 8 .
  • the angle of rotation ⁇ is preferably identical for all individual pulses 11 .
  • the respective duration t n of the individual pulses 11 can thus vary depending on the load actually applied to the screwing tool 8 or the torque actually applied. Nevertheless, it is preferably provided that all successive individual pulses 11 are spaced equally in time (cf. constant time T in figure 2 ). In particular, the successive individual pulses 11 can be spaced between 0.5 seconds and 2.0 seconds, for example 1.0 seconds to 1.5 seconds, in order to give the user sufficient time to interrupt the screwing process if necessary.
  • measured values of a position sensor 12 or rotary sensor of the electric motor 3 can be used to detect the angle of rotation ⁇ of the screwing tool 8 , which detects the position of the rotor of the electric motor 3 relative to the stator of the electric motor 3 .
  • a brushless DC motor usually already has a corresponding sensor system.
  • the drywall screwdriver 1 has a mechanical depth stop (not shown) in order to further optimize the screwing-in process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Control Of Ac Motors In General (AREA)
EP22191407.0A 2021-08-23 2022-08-22 Verfahren zum betreiben eines trockenbauschraubers, computerprogramm und trockenbauschrauber Pending EP4140650A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021121777.6A DE102021121777B4 (de) 2021-08-23 2021-08-23 Verfahren zum Betreiben eines Trockenbauschraubers, Computerprogramm und Trockenbauschrauber

Publications (1)

Publication Number Publication Date
EP4140650A1 true EP4140650A1 (de) 2023-03-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22191407.0A Pending EP4140650A1 (de) 2021-08-23 2022-08-22 Verfahren zum betreiben eines trockenbauschraubers, computerprogramm und trockenbauschrauber

Country Status (5)

Country Link
US (1) US20230116331A1 (zh)
EP (1) EP4140650A1 (zh)
JP (1) JP2023031270A (zh)
CN (1) CN115890550A (zh)
DE (1) DE102021121777B4 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19824495A1 (de) * 1998-06-02 1999-12-09 Gardner Denver Gmbh & Co Kg De Verfahren zum Antreiben einer elektrischen Schraubvorrichtung
DE102012223664A1 (de) * 2012-12-19 2014-06-26 Robert Bosch Gmbh Tragbare Werkzeugmaschine
WO2017122866A1 (ko) * 2016-01-11 2017-07-20 계양전기 주식회사 전동 공구의 제어 방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144350C2 (de) 1981-11-07 1986-07-17 Felo-Werkzeugfabrik Holland-Letz GmbH, 3577 Neustadt Schaltungsanordnung zur elektronischen Drehzahleinstellung eines Elektromotors für einen Handbohrer oder Handschrauber
US7552781B2 (en) * 2004-10-20 2009-06-30 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
US8733216B1 (en) * 2010-07-06 2014-05-27 Jore Corporation Depth setter bit holder
DE102011078385A1 (de) * 2011-06-30 2013-01-03 Robert Bosch Gmbh Trockenbauschrauber
DE102013108721A1 (de) 2013-08-12 2015-02-12 C. & E. Fein Gmbh Verfahren zum Steuern eines Elektrowerkzeuges mit einem elektronisch kommutierten Elektromotor
EP3170624A1 (de) 2015-11-17 2017-05-24 HILTI Aktiengesellschaft Steuerungsverfahren für eine werkzeugmaschine
CN106896763B (zh) * 2015-12-17 2020-09-08 米沃奇电动工具公司 用于配置具有冲击机构的电动工具的系统和方法
JP7027235B2 (ja) * 2018-04-16 2022-03-01 株式会社マキタ 電動工具
EP3756826A1 (de) 2019-06-27 2020-12-30 Hilti Aktiengesellschaft Verfahren zum betreiben einer werkzeugmaschine und werkzeugmaschine
DE102019215415A1 (de) * 2019-10-09 2021-04-15 Robert Bosch Gmbh Verfahren zum Einlernen von Anwendungsabschaltungen mit Hilfe des Auffindens von charakteristischen Signalformen bei einem Betrieb einer Handwerkzeugmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19824495A1 (de) * 1998-06-02 1999-12-09 Gardner Denver Gmbh & Co Kg De Verfahren zum Antreiben einer elektrischen Schraubvorrichtung
DE102012223664A1 (de) * 2012-12-19 2014-06-26 Robert Bosch Gmbh Tragbare Werkzeugmaschine
WO2017122866A1 (ko) * 2016-01-11 2017-07-20 계양전기 주식회사 전동 공구의 제어 방법

Also Published As

Publication number Publication date
US20230116331A1 (en) 2023-04-13
DE102021121777B4 (de) 2024-07-11
CN115890550A (zh) 2023-04-04
DE102021121777A1 (de) 2023-02-23
JP2023031270A (ja) 2023-03-08

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