EP2803452A1 - Machine-outil, porte-outil et unité de moteur d'entraînement comprenant une liaison de signaux sans fil - Google Patents

Machine-outil, porte-outil et unité de moteur d'entraînement comprenant une liaison de signaux sans fil Download PDF

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Publication number
EP2803452A1
EP2803452A1 EP14163651.4A EP14163651A EP2803452A1 EP 2803452 A1 EP2803452 A1 EP 2803452A1 EP 14163651 A EP14163651 A EP 14163651A EP 2803452 A1 EP2803452 A1 EP 2803452A1
Authority
EP
European Patent Office
Prior art keywords
drive motor
handpiece
motor unit
machine tool
transmitter
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
EP14163651.4A
Other languages
German (de)
English (en)
Other versions
EP2803452B1 (fr
EP2803452B8 (fr
Inventor
Ralph Köhler
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.)
Schmid and Wezel GmbH and Co
Original Assignee
Schmid and Wezel 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 Schmid and Wezel GmbH and Co filed Critical Schmid and Wezel GmbH and Co
Priority to SI201430013A priority Critical patent/SI2803452T1/sl
Priority to PL14163651T priority patent/PL2803452T3/pl
Publication of EP2803452A1 publication Critical patent/EP2803452A1/fr
Publication of EP2803452B1 publication Critical patent/EP2803452B1/fr
Application granted granted Critical
Publication of EP2803452B8 publication Critical patent/EP2803452B8/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
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
    • B25H3/006—Storage means specially adapted for one specific hand apparatus, e.g. an electric drill

Definitions

  • the present invention relates to a machine tool according to the preamble of claim 1, a handpiece according to the preamble of claim 10 and a drive motor unit according to the preamble of claim 13.
  • Such a machine tool has a drive motor unit having a drive motor unit, a flexible shaft and a handpiece, wherein the handpiece has a tool holder, which is movably mounted in the handpiece and which can be driven by the drive motor via the flexible shaft.
  • the handpiece has an operator request timer set up for manual operation by an operator, and the Drive motor unit is adapted to control the drive motor in response to the operation of the operator request generator.
  • Such a handpiece has a tool holder, which is movably mounted in the handpiece and adapted to be driven via a flexible shaft by a drive motor unit.
  • the handpiece has an operator request timer set up for manual operation by an operator.
  • the drive motor unit has a drive motor and is adapted to drive a tool holder movably mounted in a handpiece with a flexible shaft.
  • Such a machine tool such a handpiece and such a drive motor unit are known per se.
  • Such machine tools are used in many fields of technology, for example, the handpiece serves as a grinding tool or as a cutting tool.
  • such machine tools are used to drive so-called rotary blades, which are circular blades rotating in a bearing, the bearing having a handle body.
  • the handpiece is a hand-held and manageable meat machine, as used in slaughter animal processing.
  • the drive motor When working with the machine tool, the drive motor is actuated by the operator via an actuation of the machine tool Operator input, which is a part of the handpiece, turned on and off.
  • the machine tool according to the invention is characterized in that it has radio means set up for establishing a wireless signal connection between the handpiece and the drive motor unit, which are adapted to respond to a manual actuation of the user request generator and wherein the drive motor unit is adapted to the drive motor in dependence to control from the reaction of the radio.
  • the handpiece according to the invention is characterized in that the handpiece for establishing a wireless signal connection between the handpiece and the drive motor unit has established radio means, which are adapted to respond to a manual operation of the user request generator.
  • the drive motor unit according to the invention is characterized in that the machine tool is equipped to set up a wireless signal connection between the handpiece and the drive motor unit and is adapted to control the drive motor in response to signals of the radio.
  • the invention thus allows a waiver of a wired signal transmission between the handpiece and drive motor unit.
  • the structure of the flexible shaft is simplified, since not only the cable, but in particular also connections for connecting the cable to the handpiece and / or the drive motor unit can be omitted.
  • the radio means comprise a transmitter arranged in the handpiece and a receiver arranged in the drive motor unit.
  • the handpiece of the machine tool has an energy converter and an energy store, from which the transmitter is supplied with electrical energy.
  • the energy converter ensures a subsequent supply of energy for the activation of the drive motor influencing signal function of the handpiece, which can be easily diverted from the drive of the handpiece.
  • the energy storage ensures that even when not hand-operated handpiece sufficient energy for the said signal function of the handpiece is ready.
  • the energy converter prefferably has a generator of electrical energy connected in a rotationally fixed manner to the tool holder. This allows a technically simple and efficient diversion of mechanical energy from the drive of the handpiece and a simple conversion into electrical energy.
  • the energy store has a capacitor and / or an accumulator in the form of a rechargeable battery. Both alternatives represent simple and inexpensive energy storage for the purpose of ensuring the aforementioned signal function.
  • the operator request transmitter has a mechanical actuating means set up for manual actuation and an electrical switching element coupled to the mechanical actuating means.
  • the electrical arming of the drive is linked to a mechanical actuation by the operator, which increases safety.
  • the receiver arranged in the drive motor unit is adapted to control a switching element which is adapted to control the electrical power supply of the drive motor.
  • the radio means comprise a transmitter arranged in the drive motor unit and a reception circuit arranged in the handpiece, and are adapted to map the user request by a load modulation method in the transmission signal.
  • the receiving circuit is electrically coupled to the operator request generator and is designed so that its impedance depends on the operation of the user request generator. Turning on the drive motor unit thus requires a manual gripping of the handpiece and thus a control of the handpiece by the operator, which increases the safety in handling the handpiece.
  • the radio means comprise a transmitter arranged in the handpiece.
  • the radio means have a receiving circuit which is electrically coupled to the operator request generator and which is designed such that its impedance depends on the operation of the user request generator.
  • the radio means have a receiver arranged in the drive motor unit.
  • the radio means have a transmitter and are adapted to respond to an operator request represented by a load modulation in the transmission signal.
  • this fail safe is executed to stop the drive motor in the event of failure or interference of the radio signals.
  • This is preferably realized in that a drive motor receiving electronics is adapted to stop the drive motor in the absence or disturbed radio signal.
  • the first exemplary embodiment has a transmitter 22, 24 integrated in the handpiece 18 and a receiver 28, 30 integrated in the drive motor unit 14.
  • the second embodiment has a transmitter 33, 36 integrated in the drive motor unit 14 and operates with a load modulation method as shown in FIG similar form in RFID (Radio Frequency Identification) applications is used.
  • RFID Radio Frequency Identification
  • FIG. 1 a machine tool 10 with a drive motor 12 having a drive motor unit 14, a flexible shaft 16 and a handpiece 18th
  • the drive motor 12 is preferably an electric motor which can be connected to an electrical power supply network via a mains connection 14.1.
  • the electric motor is preferably a permanently excited synchronous motor.
  • Such an electric motor is characterized in that the rotor has no current-carrying windings, but permanent magnets which are driven by a rotating field generated by current flows in stator windings.
  • the designation as a synchronous motor indicates that the rotor rotates synchronously with the rotating field of the stator during operation. There are no ohmic losses in the rotor that would heat it up. As a result, a flow of the rotor with cool ambient air is not required, so that the electric motor can be accommodated in a sealed housing, which is particularly advantageous for some work environments.
  • the required cleaning in the meat processing of the implement is greatly facilitated by the tightness, because it allows the use of cleaning fluids and steam jets.
  • the handpiece 18 is a butcher's machine, in particular, but not exclusively, a circular blade.
  • the electric motor is turned on in the illustrated embodiment only when an electric Main switch switching element 14.3 and a second electrical switching element 14.4 allow a current flow to the electric motor.
  • This two-stage turn-on enhances operational safety by reducing the likelihood of accidental turn-on.
  • the main electrical switch switching element 14.3 is closed by a manually operable main switch 14.5 to allow current flow and opened to interrupt current flow.
  • the eincryptde operation of the main switch 14.5 thus forms a first necessary condition for operation of the drive motor 12th
  • the second electrical switching element 14.4 is closed to allow current flow and opened to interrupt current flow.
  • the switch-on actuation of the second electrical switching element 14.4 thus forms a second necessary condition for operation of the drive motor 12.
  • the handpiece 18 has a tool holder 18.1, which is movably mounted in the handpiece and which can be driven by the drive motor 12 via the flexible shaft 16.
  • the tool holder 18.1 is, for example, a bearing for a circular blade or a collet or a chuck or the like.
  • the flexible shaft 16 has a rotatable inner core 16.1 and a resting protective cover 16.2.
  • the inner liner 16.1 has at each of its two ends depending on a connection coupling.
  • a first connection coupling 16.3 is set up to be coupled in a torque-proof manner to an output 12.1 of the drive motor.
  • a second Coupling 16.4 is adapted to be coupled to a drive 18.4 of a drive shaft 18.2 of the handpiece 18.
  • the drive shaft 18.2 is rotatably connected to the tool holder 18.1.
  • the handpiece 18 has an operator request generator 20 set up for manual operation by an operator.
  • the operator request transmitter 20 has a movably connected to a handle 18.3 of the handpiece 18 mechanical actuating means 20.1, which can be easily operated by the operator when manually grasping the handle 18.3, and automatically returns to a switch-off position when releasing the handle 18.3.
  • the mechanical actuating means 20.1 is in the illustrated embodiment, a movable hinged to the handle 18.3 lever whose free end is pressed when grasping the handle 18.3 to the handle 18.3.
  • the operator-desired encoder 20 further has a first electrical switching element 20.2, which is coupled to the mechanical actuating means 20.1 and which is spring-loaded here, so that its mechanical load occurring during the actuation is limited to the spring force.
  • the mechanical actuating means 20.1 actuates the first electrical switching element 20.2 so that a handpiece transmission electronics 22 is supplied with electrical energy from an energy store 46 of the handpiece 18 with electrical energy when the operator grasps the handpiece 18 and actuates the user request transmitter 20.
  • the handpiece transmitter electronics 22 is electrically connected to a handpiece transmitter antenna 24 and is configured to receive a transmit signal 26 when the power supply is turned on generated, which is radiated via the handpiece transmitting antenna 24 and which implements a wireless connection of the handpiece 18 to the drive motor unit 14.
  • the drive motor unit 14 has a drive motor receiving antenna 28 and a drive motor unit receiving electronics 30 which are connected to and evaluate the signals of the drive motor receiving antenna 28 and are connected to the drive motor receiving antenna 28.
  • the drive motor unit receiving electronics 30 actuates the second electrical switching element 14.4, which is realized, for example, as a line transistor controlled by the drive motor unit receiving electronics 30.
  • the transmit signal 26 is preferably a signal having handpiece-individual coding so as to ensure that a particular handpiece 18 controls only its own drive motor unit 14 and does not interfere with adjacent drive motor units of other handpieces.
  • the second electrical switching element 14.4 is closed to allow a current flow, and opened to interrupt a current flow, so that the turn-on operation of the second electrical switching element 14.4 forms a second necessary condition for operation of the drive motor 12.
  • the illustrated drive motor unit 14 is configured to control the drive motor 12 in response to the operation of the user-requested encoder 20.
  • the machine tool 10 thus has to set up a wireless signal connection between the handpiece 18 and the drive motor unit 14 equipped radio.
  • these radio transmitters are the handpiece transmitter electronics 22 with the handpiece transmitter antenna 24 and the drive motor unit receiver electronics 30 with the drive motor receiver antenna 28.
  • radio resources are set up to respond to a manual actuation of the user request generator 20.
  • the reaction is performed by generating, transmitting, and receiving a transmission signal 26 representative of the operation of the user-requested encoder 20.
  • the drive motor unit 14 is configured to control the drive motor 12 in response to the response of the radio.
  • the radio means comprise a transmitter 22, 24 arranged in the handpiece 18 and a receiver 28, 30 arranged in the drive motor unit 14.
  • the FIG. 1 in particular also shows a handpiece 18 which has a tool holder 18.1, which is movably mounted in the handpiece 18 and is adapted to be driven by a drive motor unit 14 via a flexible shaft 16.
  • the handpiece 18 has an operator request generator 20 set up for manual operation by an operator. Further, it has wireless means configured to establish a wireless signal connection between the handpiece 18 and the drive motor unit 14. These radio resources are set up to respond to a manual actuation of the user request generator 20.
  • the radio means have, in particular, a transmitter 22, 24 arranged in the handpiece 18.
  • the handpiece 18 in addition to the energy storage 46 already mentioned an energy converter 32.
  • the energy converter 32 is a generator 34 of electrical energy that is connected in a rotationally fixed manner to the tool holder 18.1.
  • the energy store 46 has a capacitor 36 and / or an accumulator in the form of a rechargeable battery.
  • the user-desired encoder 20 has a mechanical actuating means 20.1 set up for manual actuation and a first electrical switching element 20.2 coupled to the mechanical actuating means 20.1.
  • the receiver 28, 30 arranged in the drive motor unit 14 is configured to control a second electrical switching element 14.4, which is set up to control the electrical power supply of the drive motor 12.
  • FIG. 1 in particular also shows a drive motor unit 14, which has a drive motor 12 and is adapted to drive a tool holder 18.1 movably mounted in a handpiece 18 with a flexible shaft 16.
  • the drive motor unit 14 has radio means set up for establishing a wireless signal connection between the handpiece 18 and the drive motor unit 14 and is adapted to control the drive motor 12 in response to transmission signals 26 of the radio resources.
  • the radio means have a receiver 28, 30 arranged in the drive motor unit.
  • the radio means comprise a transmitter 33, 36 arranged in the drive motor unit 14 and a handpiece receiving circuit arranged in the handpiece 18 54 and are adapted to map the user request by a load modulation method in the transmission signal 38.
  • a voltage is modulated on a transmitting oscillating circuit in a connection of a transmitting oscillating circuit and a receiving oscillating circuit by reacting a change of a voltage in a receiving resonant circuit.
  • RFID Radio Frequency Identification
  • a transmitting oscillating circuit supplies an inductively coupled receiving resonant circuit with energy and reads out data via the receiving resonant circuit.
  • the transmitter oscillation circuit generates a high-frequency magnetic field, which induces an alternating voltage in an inductance of a receiving resonant circuit, which is located in the vicinity of the transmitter oscillation circuit.
  • the so-called load modulation is used, which requires a sufficient proximity (distance less than 0.16 * wavelength) of the transmitting oscillating circuit and the resonant circuit.
  • transformer coupling in which the energy absorption of a Empfangsindukt technically reflected by a retroactive effect on the Sendeschwing Vietnamese in voltage changes to the transmitter oscillation circuit.
  • Controlled modulations of the load ie the impedance of the receiving resonant circuit, therefore cause voltage changes in the transmitting oscillating circuit, which can be evaluated for data transmission.
  • ISM bands Industrial, Scientific and Medical Band
  • the drive motor unit 14 has a transmitter 33, 36, which has a drive motor unit transmission electronics 33 and a drive motor unit transmitting antenna 36 connected thereto.
  • the handpiece 18 has a handpiece receiving antenna 40 and the handpiece receiving circuit, which is electrically coupled by a first electrical switching element 20. 2 to the user-desired encoder 20 and designed so that its impedance depends on the operation of the user-requested encoder 20. In the Fig. 2 this dependence is shown schematically by an inductor 42, which is connected depending on the switching position of the first electrical switching element 20.2 with a handpiece receiving circuit 44 or not.
  • the handpiece receiving circuit 44 together with the inductor 42 forms the receiving circuit.
  • the handpiece 18 of the second embodiment is thus characterized in that the radio means have a receiving circuit which is electrically coupled to the user-requested encoder 20 and which is designed so that its impedance depends on the operation of the user-requested encoder 20.
  • the drive motor unit 14 of the second embodiment is characterized in that the radio means of the drive motor unit 14 have a transmitter 33, 36 and are adapted to respond to an operator request depicted by a load modulation in the transmission signal 38.
  • the transmitter 33, 36 has a drive motor unit transmission electronics 33 and a drive motor unit transmitting antenna 36 connected thereto.
  • the drive motor unit transmission electronics 33 is set up to detect and evaluate a transmission voltage which changes at a load modulation taking place by closing the first electrical switching element 20. 2 in the handpiece 18. In this way, the drive motor unit transmission electronics 33 is able to detect an actuation of the mechanical actuating means 20.1 of the user request transmitter 20 of the handpiece 18.
  • the drive motor unit transmission electronics 33 is also capable of operating the second electrical switching element 14.4, which in the subject matter of FIG. 2 has the same function as the subject matter of FIG. 1 ,
  • the in the FIG. 2 illustrated drive motor unit 14 configured to control the drive motor 12 in response to the operation of the user request encoder 20.
  • FIG. 2 illustrated machine tool 10 for establishing a wireless signal connection between the handpiece 18 and the drive motor unit 14 equipped radio.
  • These radio are in the illustrated embodiment, the drive motor unit transmission electronics 33 with the drive motor unit transmitting antenna 36 and the handpiece receiving circuit 44 with the handpiece receiving antenna 40th
  • radio resources are set up to respond to a manual actuation of the user request generator 20.
  • the reaction is done by generating, sending and receiving the the operation of the user request transmitter imaging transmit signal 38.
  • the drive motor unit 14 is adapted to control the drive motor 12 in response to the reaction of the radio.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Surgical Instruments (AREA)
EP14163651.4A 2013-05-17 2014-04-07 Machine-outil, porte-outil et unité de moteur d'entraînement comprenant une liaison de signaux sans fil Active EP2803452B8 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201430013A SI2803452T1 (sl) 2013-05-17 2014-04-07 Obdelovalno orodje, držalo in pogonska motorna enota z brezžično signalno povezavo
PL14163651T PL2803452T3 (pl) 2013-05-17 2014-04-07 Obrabiarka, uchwyt narzędziowy i zespół silnika napędowego z bezprzewodowym połączeniem sygnałowym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013209271.7A DE102013209271B3 (de) 2013-05-17 2013-05-17 Werkzeugmaschine, Handstück und Antriebsmotoreinheit mit kabelloser Signalverbindung

Publications (3)

Publication Number Publication Date
EP2803452A1 true EP2803452A1 (fr) 2014-11-19
EP2803452B1 EP2803452B1 (fr) 2016-02-03
EP2803452B8 EP2803452B8 (fr) 2016-07-13

Family

ID=50478720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14163651.4A Active EP2803452B8 (fr) 2013-05-17 2014-04-07 Machine-outil, porte-outil et unité de moteur d'entraînement comprenant une liaison de signaux sans fil

Country Status (6)

Country Link
EP (1) EP2803452B8 (fr)
DE (1) DE102013209271B3 (fr)
ES (1) ES2564758T3 (fr)
HK (1) HK1203892A1 (fr)
PL (1) PL2803452T3 (fr)
SI (1) SI2803452T1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1075857A (en) * 1963-12-13 1967-07-12 Burndept Ltd Battery operated mechanical power unit
FR2565772A1 (fr) * 1984-06-14 1985-12-20 Stihl Andreas Appareil pour emonder les vignes
DE10233504A1 (de) * 2002-07-24 2004-02-05 Marquardt Gmbh Arbeitsgerät mit einer Sperrvorrichtung
DE102004001550A1 (de) 2004-01-10 2005-08-04 Robert Bosch Gmbh Elektrische Handwerkzeugmaschine
US20120007748A1 (en) * 2008-07-25 2012-01-12 Sylvain Forgues Controlled electro-pneumatic power tools and interactive consumable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1075857A (en) * 1963-12-13 1967-07-12 Burndept Ltd Battery operated mechanical power unit
FR2565772A1 (fr) * 1984-06-14 1985-12-20 Stihl Andreas Appareil pour emonder les vignes
DE10233504A1 (de) * 2002-07-24 2004-02-05 Marquardt Gmbh Arbeitsgerät mit einer Sperrvorrichtung
DE102004001550A1 (de) 2004-01-10 2005-08-04 Robert Bosch Gmbh Elektrische Handwerkzeugmaschine
US20120007748A1 (en) * 2008-07-25 2012-01-12 Sylvain Forgues Controlled electro-pneumatic power tools and interactive consumable

Also Published As

Publication number Publication date
HK1203892A1 (en) 2015-11-06
DE102013209271B3 (de) 2014-10-09
ES2564758T3 (es) 2016-03-28
SI2803452T1 (sl) 2016-05-31
PL2803452T3 (pl) 2016-06-30
EP2803452B1 (fr) 2016-02-03
EP2803452B8 (fr) 2016-07-13

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