EP3974112A1 - Machine outil électrique portable - Google Patents

Machine outil électrique portable Download PDF

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Publication number
EP3974112A1
EP3974112A1 EP20198937.3A EP20198937A EP3974112A1 EP 3974112 A1 EP3974112 A1 EP 3974112A1 EP 20198937 A EP20198937 A EP 20198937A EP 3974112 A1 EP3974112 A1 EP 3974112A1
Authority
EP
European Patent Office
Prior art keywords
tool
hand
sensor
held power
tof sensor
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.)
Withdrawn
Application number
EP20198937.3A
Other languages
German (de)
English (en)
Inventor
Dominik Buchner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP20198937.3A priority Critical patent/EP3974112A1/fr
Priority to US18/025,245 priority patent/US20230321808A1/en
Priority to CN202180051752.9A priority patent/CN115956015A/zh
Priority to EP21769488.4A priority patent/EP4221940A1/fr
Priority to PCT/EP2021/075685 priority patent/WO2022069262A1/fr
Publication of EP3974112A1 publication Critical patent/EP3974112A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F1/00—Combination or multi-purpose hand tools
    • B25F1/02—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/003—Stops for limiting depth in rotary hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/021—Construction of casings, bodies or handles with guiding devices

Definitions

  • the present invention relates to an electric handheld power tool with a housing and a tool holder.
  • hand tools for example in the form of hammer drills or drill drivers, are known in principle from the prior art.
  • the handheld power tool has a TOF sensor arranged on or in the housing whose field of view is oriented in the direction of the tool holder, so that the TOF sensor can detect a tool to be held in the tool holder.
  • the TOF sensor is a 3D camera system that can measure distances or distances using the time-of-flight method (TOF).
  • TOF sensors can also be referred to as TOF camera, PMD sensor or PMD camera.
  • the PMD sensor or PMD camera is a photomixing detector (also known as a photonic mixing device), which is essentially an optical sensor whose functional principle is based on the time-of-flight method.
  • the invention includes the knowledge that different tools, for example inserts such as drills or the like, can have different effects on the performance requirements of an electric hand-held power tool. For example, drilling a hole with a comparatively large diameter (e.g. 30 mm) requires considerably more power than drilling a comparatively small hole (e.g. 5 mm).
  • the tool itself can also be designed differently depending on its application. Since the tools can typically be used universally, the hand-held power tool does not "know" which tool is currently held in the tool holder.
  • the user is responsible for individually adapting the handheld power tool to the respective tool.
  • the individual adaptation can affect, for example, speed, torque, number of impacts or other similar operating parameters.
  • the hand-held power tool according to the invention enables a tool accommodated in the tool holder to be recognized by means of a TOF sensor and thus creates Basis for an automatic or at least partially automatic adaptation of the hand tool to the respective tool. This increases both comfort and safety for the user.
  • TOF sensors are typically very robust and tolerant of environmental influences such as light, background, etc.
  • the handheld power tool has sensor electronics that are designed to determine at least one tool-specific tool parameter on the basis of a sensor signal received from the TOF sensor. It has turned out to be advantageous if the at least one tool parameter is a length, a shape and/or size of the tool.
  • the tool parameter can also be a type of drill, for example "masonry drill”, “metal drill” or "wood drill”.
  • the hand-held power tool is equipped with control electronics that are designed to adapt one operating parameter on the basis of a control signal received from the sensor electronics.
  • the control signal received from the sensor electronics relates to the tool parameter or parameters. It has proven to be advantageous if comparison or reference values of the at least one tool parameter and/or operating parameter are stored in the sensor electronics and/or in the control electronics, preferably in the form of a look-up table.
  • the sensor electronics are designed to determine a penetration depth of the tool into a surface to be machined on the basis of the sensor signal received from the TOF sensor. It has turned out to be advantageous if the at least one operating parameter is adjusted by the control electronics on the basis of the determined penetration depth. For example, if the tool is provided in the form of a drill, a speed can be reduced by 50% (i.e. 50 percent) if the depth of penetration of the drill into the surface to be machined is, for example, 80% (i.e. 80 percent) of its total length.
  • the sensor electronics are designed to determine tool wear on the basis of a sensor signal received from the TOF sensor.
  • the hand-held power tool can have a display for displaying and/or acknowledging the at least one tool-specific operating parameter. It has turned out to be advantageous if the display shows a user the wear of the tool.
  • the housing has a battery foot on or in which the TOF sensor is arranged.
  • an angle between a central axis of the field of view and an axis of rotation of the tool is at least 30° (i.e. 30 degrees).
  • the tool holder is designed to hold a rotating and/or percussive tool.
  • the object is also achieved by using a TOF sensor for detecting a tool accommodated in a tool holder of an electric hand-held power tool, the TOF sensor being included in the electric hand-held power tool.
  • the use according to the invention can be further developed in a corresponding manner by the features described with reference to the hand-held power tool.
  • FIG. 1 A preferred embodiment of an electric hand tool 100 is figure 1 shown.
  • the hand-held power tool 100 is equipped with a housing 90 and a tool holder 80 .
  • the battery base 95 is understood to be part of the housing 90 .
  • the hand-held power tool 100 has a TOF sensor 30 arranged on the housing 90 in the area of the battery base 95 .
  • a field of view FOV of the TOF sensor 30 is oriented in the direction of the tool holder 80 so that the TOF sensor 30 can detect a tool 200 clamped in the tool holder 80 .
  • the tool holder 80 is designed to hold a rotating tool 200 .
  • the tool 200 is provided, for example, in the form of a drill with an axis of rotation RA.
  • the TOF sensor 30 emits a modulated infrared light by means of a transmitter array 31 . This is at least partially reflected by the tool 200 and received again by a receiver array 33 of the TOF sensor 30 .
  • the measured phase difference between emitted and received light and the amplitude of the received light are evaluated by sensor electronics 40, which is signal-connected to TOF sensor 30, and result in very precise distance information and contours of tool 200 and size can be recognized very accurately and reliably.
  • sensor electronics 40 are included in handheld power tool 100 and are designed to determine at least one tool parameter of tool 200, in particular length, shape and/or size, based on a sensor signal received from TOF sensor 30.
  • an angle WA between a central axis MA of the field of view FOV and a rotation axis RA of the tool 200 is approximately 45 degrees, ie at least 30 degrees. This means that the tool 200 is detected obliquely or laterally by the TOF sensor 30, which leads to a distorted image of the tool 200. However, this distortion can be “calculated out” by the sensor electronics 40 .
  • angle WA is meant which is located between a tip 201 of the tool 200 and the axis of rotation RA of the tool 200 on the side of the axis of rotation RA facing away from the battery base 95 .
  • the hand-held power tool 100 also has control electronics 50 which are designed to have at least one operating parameter of hand-held power tool 100 on the basis of a control signal received from sensor electronics 40.
  • the tool 200 is provided in the form of a drill.
  • the drill is detected by the TOF sensor 30 , the TOF sensor 30 being signal-connected to the sensor electronics 40 .
  • reference values for typical drill diameters, lengths, types, etc. are stored in the sensor electronics 40 in a look-up table.
  • the sensor electronics 40 can now determine that a masonry drill with a length of 150 mm and a diameter of 10 mm is clamped in the tool holder 80. For example, a maximum speed of the tool holder of 1000 rpm can be set for this drill by means of the control electronics 50 . This maximum speed is a tool-specific operating parameter.
  • hand-held power tool 100 also has a display 70 for displaying and acknowledging the at least one tool-specific operating parameter. For example, a maximum speed of the tool holder of 1000 rpm is displayed for the drill type determined. The user can acknowledge this operating parameter via the display 70, whereupon the electronic control unit 50 implements this specification. Alternatively, the user can, for example, decrease or increase this operating parameter via the display 70 and then acknowledge it.
  • the use of a TOF sensor 30 for detecting a tool 200 accommodated in a tool holder 80 of an electric hand-held power tool 100 is proposed, with the TOF sensor 30 being comprised by the electric hand-held power tool 100 .
EP20198937.3A 2020-09-29 2020-09-29 Machine outil électrique portable Withdrawn EP3974112A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20198937.3A EP3974112A1 (fr) 2020-09-29 2020-09-29 Machine outil électrique portable
US18/025,245 US20230321808A1 (en) 2020-09-29 2021-09-17 Electric hand-held power tool
CN202180051752.9A CN115956015A (zh) 2020-09-29 2021-09-17 手持式电动动力工具
EP21769488.4A EP4221940A1 (fr) 2020-09-29 2021-09-17 Outil électrique portatif
PCT/EP2021/075685 WO2022069262A1 (fr) 2020-09-29 2021-09-17 Outil électrique portatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20198937.3A EP3974112A1 (fr) 2020-09-29 2020-09-29 Machine outil électrique portable

Publications (1)

Publication Number Publication Date
EP3974112A1 true EP3974112A1 (fr) 2022-03-30

Family

ID=72670555

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20198937.3A Withdrawn EP3974112A1 (fr) 2020-09-29 2020-09-29 Machine outil électrique portable
EP21769488.4A Pending EP4221940A1 (fr) 2020-09-29 2021-09-17 Outil électrique portatif

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP21769488.4A Pending EP4221940A1 (fr) 2020-09-29 2021-09-17 Outil électrique portatif

Country Status (4)

Country Link
US (1) US20230321808A1 (fr)
EP (2) EP3974112A1 (fr)
CN (1) CN115956015A (fr)
WO (1) WO2022069262A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10118034A1 (de) * 2001-04-11 2002-10-24 Bosch Gmbh Robert Werkzeugmaschine mit wechselbarem Werkzeughalter
DE102009045235A1 (de) * 2009-10-01 2011-04-28 Robert Bosch Gmbh Werkzeugmaschine, insbesondere handgehaltene Werkzeugmaschine
US20120267134A1 (en) * 2009-10-23 2012-10-25 Wolf Matthias Handheld Tool, Handheld Tool Add-On Measuring Device and Handheld Tool Battery
EP3200313A1 (fr) * 2016-01-28 2017-08-02 Black & Decker Inc. Système permettant d'améliorer des outils électriques
DE102016218775A1 (de) * 2016-09-29 2018-03-29 Robert Bosch Gmbh Handwerkzeugmaschinensystem
DE102018107726A1 (de) * 2018-03-31 2019-10-02 Natev GmbH Werkzeug zur Bearbeitung eines Werkstücks und zur Erfassung von Bearbeitungsstellen
WO2019223954A1 (fr) * 2018-05-24 2019-11-28 Atlas Copco Industrial Technique Ab Outil électrique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10118034A1 (de) * 2001-04-11 2002-10-24 Bosch Gmbh Robert Werkzeugmaschine mit wechselbarem Werkzeughalter
DE102009045235A1 (de) * 2009-10-01 2011-04-28 Robert Bosch Gmbh Werkzeugmaschine, insbesondere handgehaltene Werkzeugmaschine
US20120267134A1 (en) * 2009-10-23 2012-10-25 Wolf Matthias Handheld Tool, Handheld Tool Add-On Measuring Device and Handheld Tool Battery
EP3200313A1 (fr) * 2016-01-28 2017-08-02 Black & Decker Inc. Système permettant d'améliorer des outils électriques
DE102016218775A1 (de) * 2016-09-29 2018-03-29 Robert Bosch Gmbh Handwerkzeugmaschinensystem
DE102018107726A1 (de) * 2018-03-31 2019-10-02 Natev GmbH Werkzeug zur Bearbeitung eines Werkstücks und zur Erfassung von Bearbeitungsstellen
WO2019223954A1 (fr) * 2018-05-24 2019-11-28 Atlas Copco Industrial Technique Ab Outil électrique

Also Published As

Publication number Publication date
WO2022069262A1 (fr) 2022-04-07
US20230321808A1 (en) 2023-10-12
CN115956015A (zh) 2023-04-11
EP4221940A1 (fr) 2023-08-09

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