EP1270150B1 - Tournevis éléctrique avec DISPOSITIF D'ACCOUPLEMENT A LIMITATION DE TORSION et liaison de transmission sans fil avec une station de base - Google Patents

Tournevis éléctrique avec DISPOSITIF D'ACCOUPLEMENT A LIMITATION DE TORSION et liaison de transmission sans fil avec une station de base Download PDF

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Publication number
EP1270150B1
EP1270150B1 EP02011720A EP02011720A EP1270150B1 EP 1270150 B1 EP1270150 B1 EP 1270150B1 EP 02011720 A EP02011720 A EP 02011720A EP 02011720 A EP02011720 A EP 02011720A EP 1270150 B1 EP1270150 B1 EP 1270150B1
Authority
EP
European Patent Office
Prior art keywords
base station
radio
controller
screwdriver
microcontroller unit
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.)
Expired - Lifetime
Application number
EP02011720A
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German (de)
English (en)
Other versions
EP1270150A3 (fr
EP1270150A2 (fr
Inventor
Christian Sack
Ronny Thielens
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.)
Tool Express-Service Schraubertechnik GmbH
Original Assignee
Tool Express-Service Schraubertechnik 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
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Application filed by Tool Express-Service Schraubertechnik GmbH filed Critical Tool Express-Service Schraubertechnik GmbH
Publication of EP1270150A2 publication Critical patent/EP1270150A2/fr
Publication of EP1270150A3 publication Critical patent/EP1270150A3/fr
Application granted granted Critical
Publication of EP1270150B1 publication Critical patent/EP1270150B1/fr
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
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • 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

Definitions

  • the invention relates to an arrangement comprising an electric driven, surrounded by a housing screwdriver with an electrochemical energy storage, a shutdown clutch with a upon reaching a torque setpoint operated switching contact, one connected to the screwdriver Control at least for the acquisition and transmission of operating data of the screwdriver using a wireless transmission link with a base station at least for transmission and processing the operating data communicates.
  • Screw connections in automated processes Data collection and control of the production of Screw connections in automated processes is for the Quality assurance of the bolted object of special Meaning, in particular omitted screwed connections, for example, as a result of work stoppages, many times initially not noticeable, especially if they have a visual inspection are withdrawn. Make missing screw connections However, often disturbing after prolonged use of the object noticeable. This can e.g. in automobile production too unwanted rattling noises and thus costly rework to lead.
  • Target parameters of the screw connection such as For example, the maximum tightening torque, in the Entered the nutrunner control, which is the electric screwdriver in Dependence of the setpoint parameters controls.
  • the nutrunner control detects whether a screw connection has taken place and the target parameters were met. The detected signals will be sent to the line control in automobile production returned.
  • cordless screwdriver In addition, come in the automotive production not wired Cordless screwdriver is used, which is a shutdown clutch exhibit. The shut-off interrupts when reaching a Torque setpoint the power supply of the motor of the Cordless screwdriver.
  • the cordless screwdrivers have to be wired Electric screwdrivers have the decisive advantage of complete freedom of movement. A check, whether all screw connections is done on an object, but is not possible. Cordless screwdrivers are therefore mostly only for attachment of plastic parts in the engine or interior of the Vehicle used, no special control and control require the screw.
  • an electric screwdriver in which by an electronic control the torque of Wrench is being monitored. This is done by evaluating the when driving the screwdriver flowing current, which is proportional to the torque. The evaluation takes place in such a way that from the electronics the slope of the time course of the torque is detected. After a certain predetermined Torque is turned off by the electronics triggered by the screwdriver.
  • the tightening results are stored in a circuit of the screwdriver and after the screw connection to a stationary control unit for Evaluation and / or documentation transmitted. The transmission the tightening results are wireless, for example via infrared light.
  • JP 11 129164 A discloses an electrically driven Screwdriver with a sensor arranged therein according to the preamble of claim 1, whose data to be used, not or not with sufficient torque produced screwed at to avoid a mounting process.
  • An embodiment has an electrically driven screwdriver with a Torque sensor on. Once the target torque at the Screwing is achieved, this is from an LED display displayed, which is arranged on the electric screwdriver. It should also be noted that the number of Tripping usually in electric screwdrivers detected and counted existing torque clutches can be. The counting result can be displayed are displayed. How the number of trips the Torque clutch is detected and counted is not disclosed.
  • US-A-6076438 discloses a mechanical nutrunner Shutdown clutch, which when reaching a preset Triggering a microswitch is actuated, the one electrical signal to a control device outputs to a Shutdown of the screwdriver motor to effect.
  • the task is based, with little effort, in particular low wiring costs producible or retrofittable Arrangement using a conventional, not wired Cordless screwdriver to propose, at least one Control of the number of performed glands allows as well as the recognition of a so-called "Double Hit" allows, that is the repeated attempt, one already performed until reaching the target torque Screw again screwed.
  • the bi-directional transmission permitting radio link is used to transmit a protocol that the radio transmission the data between the controller and the base station regulates. As a result, is a complex transponder technology not required for data transfer.
  • the wiring effort between the controller and the electrical Screwdriver is minimal. In the simplest case is only the microcontroller unit with a contact of the motor and with the switching contact of the shut-off and the Power supply of the screwdriver connected, which thus also the module is powered.
  • the use of wireless technology in conjunction with the low Wiring effort, allows the summary of Control components in a module.
  • the module is for example by screwing to the housing of a conventional Cordless screwdriver and making the few cable connections easy to retrofit.
  • the base station transmits and processes the operating data and gives these, for example via an interface to a Line control in the automotive industry.
  • microcontroller unit of the control signals for a switch for interrupting the power supply generated by the electric drive can be connected with the bidirectional radio link of the screwdriver depending on of belt condition or work progress turn a production line on and off.
  • the controller and / or the base station have an advantageous Embodiment of the invention at least one particular acoustic or optical signal transmitter, the For example, a correct connection, the so-called "IO-screw connection” signaled.
  • a correct connection lies before, when the target torque has been reached. Furthermore, can the operational readiness of the screwdriver, the state of charge of the Energy storage or a faulty radio link signals become.
  • An arranged on the module light source allows illumination the screwing point, the controller being the lighting to protect the energy storage preferably only during powered by screwing.
  • conventional cordless screwdriver consists essentially of a battery A of a motor M supplied via line connections 2, 3 with power. Between the battery A and the motor M is a control logic S, for making and interrupting the power supply from the battery to the Engine.
  • the control logic S allows a reverse current direction between battery A and motor M and a change the speed of the motor M.
  • About at least one operating element B can be the various control functions of Trigger control logic S.
  • a gear G is flanged over which the reduced engine speed transmitted to a tool holder W. becomes.
  • a mechanical shut-off clutch K with a not arranged electrical switching contact arranged at the Reaching a torque setpoint is opened.
  • the electrical switching contact is via line connections 4 with an input 5 of the control logic S connected. Will the switching contact when the torque setpoint is reached, it interrupts the control logic S independent of the control B, the power supply of the motor M. This is a to high tightening torque prevents screwing.
  • the cordless screwdriver 1 On top of the cordless screwdriver 1 is a total with Screwed 6 designated control, via a radio link with a total of 7 designated base station communicated.
  • the controller 6 and the base station 7 have in each case a radio transmitter TX1, TX2 and a radio receiver RX1, RX2 for bidirectional transmission of radio signals on.
  • a microcontroller L1, L2 in the Control 6 and the base station 7 provide the regulated Transmission of radio signals safely and generate control signals.
  • the microcontroller L1 of the controller 6 generates control signals for a breaker relay R in the line connection 2 between the battery A and the control logic S and for one the microcontroller L1 connected signal generator M1.
  • the Control signals are transmitted via line connectors 8, 9.
  • An input 11 of the microcontroller L1 is via a Line connection 14 is connected to a contact of the motor M.
  • Another input 12 of the microcontroller L1 is over a line connection 13 directly to the switching contact the shutdown clutch K connected.
  • the microcontroller L2 generates control signals for one of the Base station 7 connected belt control 15 of an automobile production as well as for a connected to the microcontroller L2 Signaling device M2.
  • the control signals are over Line connections 16, 17 transferred.
  • An entrance 18 of the Microcontroller L2 is connected via a line connection 19 with the band control 15 connected.
  • the band controller 15 transmits via the line connection 19 to the input 18 at the base station 7 a signal "Enable", if a new object to be bolted with a defined Number of screw connections has arrived.
  • This Signal is evaluated by the micro-controller L2 and over transmitter TX2 is sent to receiver RX1 to controller 6.
  • the microcontroller L1 evaluates the incoming signal and switches over the connecting line 8 by means of the breaker relay R the power supply to the motor M a. additionally the microcontroller L1 generates a signal that is transmitted via the Signaling device M1, e.g. a buzzer or a light emitting diode that Operating readiness of the cordless screwdriver indicates.
  • the microcontroller L1 By polling the inputs 11, 12 is the microcontroller L1 known whether the motor M is on or off and whether the shut-off clutch K has reached the target torque. These Information allows the recognition of the operating status the cordless screwdriver and the production of a screw connection until reaching the target torque.
  • so-called "IO-screwing” is a signal from the microcontroller L1 generated via the signal generator M1 displayed and via the transmitter TX1 to the receiver RX2 the Base station is transmitted.
  • the base station 7 shows the recognized "IO screw connection" also via their signal generator M2 and transmits the signal via the line connection 17 to the band control 15th
  • Has been the implementation of all intended for the object Screw connections to the band controller 15 signals transmits the tape control 15 to the input 18 of the base station 7 is a signal for turning off the cordless screwdriver 1, the sent via the radio link to the controller 6 of the cordless screwdriver 1 becomes.
  • the microcontroller L1 detects the shutdown signal and interrupts via the breaker relay R the power supply to the motor M. At the same time, the successful production of all Screw connections indicated by the signal generator M1.
  • FIG. 2 a shows a side view of a conventional cordless screwdriver 1 with a retrofitted controller 6 and a shown in Figure 2 b, at a distance from the cordless screwdriver set up base station 7.
  • the base station 7 instructs her housing front a slot 21 for receiving a plug-in card 22 having electrical connectors on.
  • the plug-in card 22 is the micro-controller L2 of the base station 7, with the other components via the electrical connectors by inserting into the slot can be brought into connection.
  • Microcontroller L1 each cordless screwdriver 1 an electronic Identification, for example in the form of a serial no. saved is, and for each cordless screwdriver 1 a plug-in card 22 with a corresponding electronic identification heard is every cordless screwdriver 1 with such plug-in card 22 at any base stations 7 without programming used.
  • Cordless Screwdriver 18th entrance Second line connections 19th line connections Third line connections 20th - 4th line connections 21st slot 5th entrance 22nd plug 6th control A. battery pack 7th base station B. operating element 8th. line connections S. control logic 9th line connections M. engine 10th - G. transmission 11th entrance K. shut-off 12th entrance W. tool holder 13th line connections TX1,2 Radio transmitter 14th line connections RX1,2 Radio receiver 15th belt control L1,2 microcontroller 16th line connections M1.2 Indicator lights, acoustic signalers, screw-on lighting 17th line connections R. Breaker relay

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)

Claims (8)

  1. Dispositif comprenant une visseuse entraínée électriquement, entourée par un logement, comportant un accumulateur électrochimique, un limiteur de couple mécanique avec un contact d'interrupteur actionné lorsqu'une valeur de consigne de couple de rotation est atteinte, une commande reliée à la visseuse au moins pour enregistrer et transmettre des données de fonctionnement de la visseuse, qui communique par une voie de transmission sans fil avec une station de base au moins pour transmettre et traiter les données de fonctionnement, caractérisé en ce que
    la voie de transmission est une liaison radio bidirectionnelle pour la transmission d'un protocole, lequel règle la transmission radio des données entre la commande (6) et la station de base (7),
    la commande (6) présente un émetteur radio (TX1) relié à une unité de microcontrôleur (L1) ainsi qu'un récepteur radio (RX1) pour la transmission bidirectionnelle de signaux radio, moyennant quoi un système de gestion du temps est intégré dans la commande (6), lequel enregistre le temps entre l'allumage du moteur (M) et le moment où la valeur de consigne du couple de rotation du limiteur de couple (K) est atteinte,
    l'unité de microcontrôleur (L1) est reliée à un contact du moteur (M) et au contact d'interrupteur du limiteur de couple (K) mécanique, moyennant quoi ce câblage permet l'enregistrement des données de fonctionnement à l'allumage et l'arrêt du moteur (M) et au moment où le couple de rotation de consigne du limiteur de couple est atteint, et
    la station de base (7) présente un émetteur radio (TX2) et un récepteur radio (RX2) pour la transmission bidirectionnelle de signaux radio ainsi qu'une unité de microcontrôleur (L2) au moins pour traiter, transmettre et délivrer les données de fonctionnement.
  2. Dispositif selon la revendication 1, caractérisé en ce que les composants de la commande (6) sont assemblés dans un module, qui est fixé de l'extérieur sur le logement de la visseuse (1).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'unité de microcontrôleur (L1) de la commande (6) produit des signaux de commande destinés à un interrupteur (R) pour interrompre l'alimentation en énergie électrique de l'entraínement électrique (M).
  4. Dispositif selon une des revendications 1 à 3, caractérisé en ce que la commande (6) et/ou la station de base (7) présentent au moins un générateur de signaux (M1,M2).
  5. Dispositif selon une des revendications 2 à 4, caractérisé en ce que au moins une source de lumière est disposée sur le module.
  6. Dispositif selon une des revendications 1 à 5, caractérisé en ce que la station de base (7) présente une fente (21) pour un élément enfichable (22) présentant des connecteurs électriques, sur lequel l'unité de microcontrôleur (L2) de la station de base (7) est disposée et qui peut être relié aux autres composants de la station de base par l'intermédiaire des connecteurs électriques en l'enfichant dans la fente (21).
  7. Dispositif selon la revendication 6, caractérisé en ce que, dans une zone de stockage de l'unité de microcontrôleur (L1) de la commande et dans une zone de stockage de l'unité de microcontrôleur (L2) de l'élément enfichable (22), des identifications électroniques correspondantes sont stockées, lesquelles sont transmises par la liaison radio bidirectionnelle entre la commande (6) et la station de base (7) correspondante.
  8. Système constitué de plusieurs dispositifs selon une des revendications 1 à 7, caractérisé en ce que la fréquence radio de l'émetteur radio (TX1,TX2) et du récepteur radio (RX1,RX2) de tous les dispositifs concordent, moyennant quoi un protocole stocké dans les zones de stockage des unités de microcontrôleurs (L1,L2), notamment en transmettant les identifications électroniques selon la revendication 7, garantit une coordination claire des signaux à transmettre entre la commande (6) et la station de base (7) correspondante de chaque dispositif.
EP02011720A 2001-06-07 2002-05-25 Tournevis éléctrique avec DISPOSITIF D'ACCOUPLEMENT A LIMITATION DE TORSION et liaison de transmission sans fil avec une station de base Expired - Lifetime EP1270150B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10127821 2001-06-07
DE10127821A DE10127821C5 (de) 2001-06-07 2001-06-07 Anordnung zum Betrieb eines Elektro-Schraubers

Publications (3)

Publication Number Publication Date
EP1270150A2 EP1270150A2 (fr) 2003-01-02
EP1270150A3 EP1270150A3 (fr) 2003-09-03
EP1270150B1 true EP1270150B1 (fr) 2005-08-31

Family

ID=7687612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011720A Expired - Lifetime EP1270150B1 (fr) 2001-06-07 2002-05-25 Tournevis éléctrique avec DISPOSITIF D'ACCOUPLEMENT A LIMITATION DE TORSION et liaison de transmission sans fil avec une station de base

Country Status (4)

Country Link
EP (1) EP1270150B1 (fr)
AT (1) ATE303233T1 (fr)
DE (2) DE10127821C5 (fr)
ES (1) ES2248441T3 (fr)

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US9917457B2 (en) 2015-02-02 2018-03-13 Black & Decker Inc. Power tool with USB connection

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CN103732361B (zh) 2011-07-24 2017-03-01 株式会社牧田 用于电动工具的适配器、电动工具系统和其操作方法
EP2734340B1 (fr) 2011-07-24 2017-12-20 Makita Corporation Système anti-vol pour système de machine électrique, et adaptateur et procédé pour ce système
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Publication number Priority date Publication date Assignee Title
US9917457B2 (en) 2015-02-02 2018-03-13 Black & Decker Inc. Power tool with USB connection

Also Published As

Publication number Publication date
EP1270150A3 (fr) 2003-09-03
DE10127821C1 (de) 2002-07-18
DE10127821C5 (de) 2005-05-12
DE50204058D1 (de) 2005-10-06
ES2248441T3 (es) 2006-03-16
EP1270150A2 (fr) 2003-01-02
ATE303233T1 (de) 2005-09-15

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