EP3077160A1 - Dispositif de machine-outil - Google Patents

Dispositif de machine-outil

Info

Publication number
EP3077160A1
EP3077160A1 EP14795622.1A EP14795622A EP3077160A1 EP 3077160 A1 EP3077160 A1 EP 3077160A1 EP 14795622 A EP14795622 A EP 14795622A EP 3077160 A1 EP3077160 A1 EP 3077160A1
Authority
EP
European Patent Office
Prior art keywords
unit
sensor
drive unit
machine tool
designed
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
EP14795622.1A
Other languages
German (de)
English (en)
Inventor
Bernd Wirnitzer
Helge SPRENGER
Hagen Philipp Keinath
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3077160A1 publication Critical patent/EP3077160A1/fr
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D11/00Portable percussive tools with electromotor or other motor drive
    • B25D11/005Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D11/00Portable percussive tools with electromotor or other motor drive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION 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
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2250/00General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/195Regulation means
    • B25D2250/201Regulation means for speed, e.g. drilling or percussion speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2250/00General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/221Sensors

Definitions

  • Machine tool devices in particular handheld power tool devices, are already known, which have a control and / or regulating unit for controlling and / or regulating a drive unit and at least one sensor unit, wherein the sensor unit comprises at least one sensor element designed as an acceleration sensor.
  • the invention is based on a machine tool device, in particular a handheld power tool device, with at least one control and / or regulating unit for controlling and / or regulating a drive unit and with at least one sensor unit which comprises at least one sensor element designed as an acceleration sensor.
  • control and / or regulating unit is at least provided to determine at least one actual rotational speed of the drive unit from a signal of the sensor element designed as an acceleration sensor.
  • provided is meant in particular specially programmed, specially designed and / or specially equipped.Assuming that an element and / or a unit is provided for a particular function, should be understood in particular that the element and / or the unit this fulfills / fulfills and / or executes / performs certain function in at least one application and / or operating state is preferably designed as a handheld power tool control device, which is provided for controlling a target rotational speed of the drive unit.
  • the drive unit is preferably designed as an electric motor unit.
  • the drive unit can be designed as an AC electric motor unit or as a DC motor unit.
  • the control and / or regulating unit is preferably provided to control and / or regulate a rotational speed of the drive unit.
  • a "control and / or regulating unit” is to be understood as meaning, in particular, a unit having at least one control electronics.
  • Control electronics are to be understood in particular as meaning a unit having a processor unit and a memory unit as well as an operating program stored in the memory unit.
  • the control and / or regulating unit preferably receives electrical signals of the sensor unit, which are taken into account in a control and / or regulation of the drive unit.
  • the sensor element designed as an acceleration sensor is preferably provided to record acceleration values which, at least in the sentlichen parallel to a drive axis, in particular a rotation axis, the drive unit are aligned and / or are aligned at least substantially parallel to a rotational axis of a tool holder of the machine tool.
  • the sensor element designed as an acceleration sensor it is also conceivable for the sensor element designed as an acceleration sensor to be provided alternatively or additionally to receive acceleration values which are aligned at least essentially perpendicular to a drive axis, in particular a rotation axis, of the drive unit.
  • substantially parallel is meant in particular an orientation of a direction relative to a reference direction, in particular in a plane, wherein the direction opposite to
  • Reference direction has a deviation, in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.
  • the term "substantially perpendicular" is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in one plane, including an angle of 90 ° and the angle a maximum deviation of, in particular, smaller 8 °, advantageously smaller than 5 ° and particularly advantageously smaller than 2 ° .
  • the sensor element designed as an acceleration sensor is particularly preferably designed to absorb acceleration-unit-related acceleration values. It can therefore be advantageously dispensed with already known speed sensors, which are arranged, for example, on a fan wheel be saved, since due to a loss of a fan speed sensor arranged on the high manufacturing tolerances in the fan wheel are possible.
  • control and / or regulating unit is at least provided to set a rotational speed of the drive unit as a function of a signal of the sensor element designed as an acceleration sensor.
  • the sensor unit has at least one further sensor element designed as a current sensor.
  • the further sensor element designed as a current sensor is preferably provided for measuring a drive unit current, in particular a current received by the drive unit.
  • a further drive unit characteristic can be detected, which can be used for further processing by means of the control and / or regulating unit.
  • control and / or regulating unit is provided at least to set a rotational speed of the drive unit as a function of a signal of the sensor element designed as an acceleration sensor and as a function of a signal of the further sensor element designed as a current sensor.
  • a detection of an operating state in particular a striking operation or an idling operation of a hammer mechanism unit, can be made possible.
  • an advantageous adaptation of a rotational speed of the drive unit to an operating state can take place.
  • a safe starting of the percussion device can also advantageously be achieved, since the percussion work device can be approached from a low start impact number.
  • a power increase of the striking mechanism device can be achieved.
  • a low-vibration behavior of the power tool in an idling operation due to a low rotational speed can advantageously be made possible.
  • control and / or regulating unit comprises at least one voltage and / or current regulator to a speed setting of the drive unit, which is intended to a from a signal of as
  • the voltage and / or current regulator preferably additionally takes into account the signals of the further sensor element designed as a current sensor and the additional sensor element designed as a voltage sensor for setting a speed in addition to a speed setting.
  • a deviation of a desired rotational speed of the drive unit can advantageously be kept low, since an actual rotational speed of the drive unit can be taken into account when controlling a rotational speed by means of the voltage and / or current regulator.
  • Figure 1 shows a machine tool 66a, which is designed as a drill and / or chisel hammer.
  • the machine tool 66a is a hand-held power tool. ne trained.
  • the portable power tool 66a is formed in an alternative embodiment, not shown here as a demolition hammer or as another, a person skilled in the useful appearing hand tool.
  • the machine tool 66a comprises at least one percussion device 34a. Impact device 34a is in
  • the control and / or regulating unit 12a is at least provided to determine at least one actual rotational speed of the drive unit 14a from a signal of the sensor element 18a designed as an acceleration sensor.
  • the control and / or regulating unit 12a has a Phasenregelschleifenein- unit 68a ( Figure 2), which is intended to determine a frequency from a detected by the acceleration sensor sensor element 18a as a signal.
  • the control and / or regulating unit 12a instead of the phase locked loop unit 68a a
  • the sensor unit 16a has at least one further sensor element 20a designed as a current sensor.
  • the further sensor element 20a designed as a current sensor is provided for detecting a current received by the drive unit 14a.
  • a current value detected by the further sensor element 20a designed as a current sensor is transmitted to the control and / or regulating unit 12a.
  • the control and / or regulating unit 12a is at least provided to set a rotational speed of the drive unit 14a as a function of a signal of the sensor element 18a designed as an acceleration sensor and as a function of a signal of the further sensor element 20a designed as a current sensor.
  • the sensor unit 16a comprises at least one additional sensor element 22a designed as a voltage sensor.
  • a plurality of parameter identification fields 28a, 30a, 32a are adapted simultaneously or successively, or that the parameter characteristic fields 28a, 30a, 32a are shifted not only up or down by an offset, but an increase of the stored parameter characteristic fields 28a, 30a, 32a varied.
  • the control and / or regulating unit 12a thus performs at least one adaptation of a parameter map 28a, 30a, 32a of the drive unit 14a stored in a memory unit 26a of the control and / or regulating unit 12a to a setting of a set speed of the drive unit 14a.
  • FIG. 5 shows a further embodiment of the invention.
  • the following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, wherein, with regard to identically named components, in particular with regard to components having the same reference numbers, in principle also to the drawings and / or the description of the other embodiments, in particular FIGS to 4, can be referenced.
  • the letter a is the reference numerals of the embodiment in the figures 1 to 4 adjusted. In the embodiment of Figure 5, the letter a is replaced by the letter b.
  • Machine tool device 10b may be referred to the description of Figure 4.

Abstract

L'invention concerne un dispositif de machine-outil, en particulier un dispositif de machine-outil portative, comprenant au moins une unité de commande et/ou de régulation (12a ; 12b), servant à commander et/ou réguler une unité d'entraînement (14a ; 14b), et au moins une unité de détection (16a ; 16b) qui comporte au moins un élément de détection (18a ; 18b) conçu sous la forme d'un capteur d'accélération. Selon l'invention, l'unité de commande et/ou de régulation (12a ; 12b) est destinée au moins à déterminer au moins une vitesse de rotation réelle de l'unité d'entraînement (14a ; 14b) à partir d'un signal de l'élément de détection (18a ; 18b) conçu sous la forme d'un capteur d'accélération.
EP14795622.1A 2013-12-03 2014-11-06 Dispositif de machine-outil Pending EP3077160A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013224759.1A DE102013224759A1 (de) 2013-12-03 2013-12-03 Werkzeugmaschinenvorrichtung
PCT/EP2014/073924 WO2015082169A1 (fr) 2013-12-03 2014-11-06 Dispositif de machine-outil

Publications (1)

Publication Number Publication Date
EP3077160A1 true EP3077160A1 (fr) 2016-10-12

Family

ID=51868230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14795622.1A Pending EP3077160A1 (fr) 2013-12-03 2014-11-06 Dispositif de machine-outil

Country Status (6)

Country Link
US (1) US10556333B2 (fr)
EP (1) EP3077160A1 (fr)
CN (1) CN105792992B (fr)
DE (1) DE102013224759A1 (fr)
RU (1) RU2690583C1 (fr)
WO (1) WO2015082169A1 (fr)

Cited By (1)

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EP3881992A1 (fr) * 2020-03-20 2021-09-22 Andreas Stihl AG & Co. KG Appareil de travaux de jardinage, de foresterie et/ou de construction guidé à la main et procédé de fonctionnement d'un appareil de travaux de jardinage, de foresterie et/ou de construction guidé à la main

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Also Published As

Publication number Publication date
CN105792992B (zh) 2019-05-07
RU2690583C1 (ru) 2019-06-04
US10556333B2 (en) 2020-02-11
DE102013224759A1 (de) 2015-06-03
US20160279776A1 (en) 2016-09-29
CN105792992A (zh) 2016-07-20
WO2015082169A1 (fr) 2015-06-11

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