WO2011072908A1 - Power tool - Google Patents
Power tool Download PDFInfo
- Publication number
- WO2011072908A1 WO2011072908A1 PCT/EP2010/065518 EP2010065518W WO2011072908A1 WO 2011072908 A1 WO2011072908 A1 WO 2011072908A1 EP 2010065518 W EP2010065518 W EP 2010065518W WO 2011072908 A1 WO2011072908 A1 WO 2011072908A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power tool
- destructive interference
- drill
- processor
- tool
- Prior art date
Links
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
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/11—Arrangements of noise-damping means
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/221—Sensors
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/121—Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general
Definitions
- Power tool The present invention relates to a power tool according to the preamble of
- a drilling machine is in particular a tool with which holes can be drilled in a respective body by means of a drill.
- the drill is rotated by a torque generator, usually an electric motor, in the required rotational movement.
- a torque generator usually an electric motor
- a significant reduction of acoustic emissions of power tools can be achieved.
- Passive means to reduce the impact of noise on an operator can be substantially eliminated.
- the device for generating destructive interference has a processor and a transmitter interacting with the processor and / or a loudspeaker unit interacting with the processor.
- a processor By means of such a processor sound waves of suitable frequency, amplitude and phase for generating destructive interference in superimposition can be generated with occurring during operation of the power tool sound emissions, which can then be emitted by the transmitter and / or the speaker unit accordingly.
- the device according to the invention for generating destructive interferences comprises means for generating destructive interferences with respect to noises generated by the power tool, which have previously known amplitudes or amplitude responses and / or frequencies or frequency responses.
- noises generated by the power tool which have previously known amplitudes or amplitude responses and / or frequencies or frequency responses.
- inherent machine noise, z As engine or transmission noise, be compensated in a simple manner, since their frequencies and amplitudes known from the outset Furthermore, these frequencies and amplitudes are substantially constant or change in a known manner.
- the device according to the invention for generating destructive interference has a sensor, in particular a microphone, and a processor unit cooperating with the microphone.
- a sensor in particular a microphone
- a processor unit cooperating with the microphone.
- processors can be embodied as individual processors, and / or in any desired manner, for example as a common processor.
- the invention is particularly advantageous in drilling machines, such as impact drills, rotary hammers, impact hammers or Akkubohrmaschinen, as well as sawing machines or grinding machines used.
- Figure 1 shows schematically a preferred embodiment of an inventively designed drill.
- FIG. 1 shows, by way of example, a hand-held impact drill with a tool holder 10 for receiving a drill 12, which has an electric motor 14 arranged in a housing 40 via a gear 24 and a counter stage 25 with several rotational frequencies and via a pneumatic percussion mechanism 42 with a percussion frequency is drivable.
- the impact mechanism 42 has a guided in a hammer tube 44 exciter piston 46 which acts on the shaft end of the drill via an air cushion 48, a bat or flying piston 50 and a striker 52.
- a Schlager- generation can also be done on grid disks.
- the impact production shown here via a striking mechanism with piston, racket and striker is preferred in the case of rotary hammers.
- the electric motor 14 can be controlled or regulated by means of a control and / or regulating device 26 which can be actuated by a switch 15.
- the illustrated drilling machine further comprises a device 21 for generating destructive interference, by means of which noise emissions occurring during operation of the drilling machine can be reduced or completely suppressed.
- the device 21 expediently has a processor device 21a and a loudspeaker unit 23 for emission of suitable frequencies by means of which destructive interferences can be generated.
- the destructive interferences are generated by generating and transmitting corresponding phase-shifted sound waves or frequencies based on sound waves of particular frequency and amplitude which arise during operation of the drilling machine, which superimpose themselves with the original waves to produce destructive interferences.
- Destructive interferences can be provided especially when additional sound waves with the same frequency and amplitude, but correspondingly opposite phase, are generated.
- the device 21 When operating the drill, however, there are also sound waves whose frequencies and amplitudes are not known from the outset, and which in particular depend on a machined body or material.
- the device 21 furthermore has a sensor, in particular a microphone, by means of which sound waves produced in this way can be detected.
- the processor unit 21 a which is provided in the device 21, then corresponding sound waves with suitable amplitudes, frequencies and / or phases for generating destructive interference can be generated, which can be emitted via the transmitter or the speaker 23.
- the processor is capable of generating, in real time, a corresponding counter-sound with respect to the sound waves picked up by the microphone 25. In practice, efforts should be made to minimize the time lag between emissions and counter-noise.
- the positioning of the device 21 shown in Figure 1, together with the positioning of the processor 21 a or the transmitter or speaker 23 and the microphone 25 is purely schematic and exemplary. It is also possible to position the four components 21, 21 a, 23 and 25 separately from each other at respective suitable locations within the housing 40.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080057235.4A CN102655989B (en) | 2009-12-15 | 2010-10-15 | Electric tool |
EP10770790A EP2512748A1 (en) | 2009-12-15 | 2010-10-15 | Power tool |
RU2012129662/02A RU2012129662A (en) | 2009-12-15 | 2010-10-15 | ELECTRIC TOOL |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009054648.0 | 2009-12-15 | ||
DE102009054648A DE102009054648A1 (en) | 2009-12-15 | 2009-12-15 | power tool |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011072908A1 true WO2011072908A1 (en) | 2011-06-23 |
Family
ID=43216295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/065518 WO2011072908A1 (en) | 2009-12-15 | 2010-10-15 | Power tool |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2512748A1 (en) |
CN (1) | CN102655989B (en) |
DE (1) | DE102009054648A1 (en) |
RU (1) | RU2012129662A (en) |
WO (1) | WO2011072908A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3610989A1 (en) * | 2018-08-14 | 2020-02-19 | Hilti Aktiengesellschaft | Headset for active noise suppression, helmet comprising such a headset, system comprising such a headset and a hand-held machine tool |
USD906409S1 (en) * | 2018-07-31 | 2020-12-29 | Jins Holdings Inc. | Nose pad for eyeglasses |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015213155A1 (en) * | 2015-07-14 | 2017-01-19 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Method for operating an electric motor and associated control unit |
CN105415294A (en) * | 2015-12-28 | 2016-03-23 | 河南广度超硬材料有限公司 | Percussion drill with magnetic excitation device |
EP4067004A1 (en) * | 2021-03-30 | 2022-10-05 | Andreas Stihl AG & Co. KG | Method and apparatus with noise adjustment |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4566118A (en) * | 1981-11-26 | 1986-01-21 | Sound Attenuators Limited | Method of and apparatus for cancelling vibrations from a source of repetitive vibrations |
US5668744A (en) * | 1995-05-05 | 1997-09-16 | Owens-Corning Fiberglas Technology Inc. | Active noise control using piezoelectric sensors and actuators |
EP1221359A1 (en) * | 2001-01-05 | 2002-07-10 | Robert Bosch Gmbh | Vibration isolating device |
EP1270151A1 (en) * | 2001-06-21 | 2003-01-02 | HILTI Aktiengesellschaft | Percussive electric tool with active damping vibration system |
EP1518638A1 (en) * | 2003-09-02 | 2005-03-30 | Schwäbische Werkzeugmaschinen GmbH | Machine tool with active noise reduction |
EP1736284A1 (en) * | 2005-06-24 | 2006-12-27 | C. & E. Fein GmbH | Hand-held power tool with a damping devic |
DE102006054603A1 (en) * | 2006-11-20 | 2008-05-21 | Robert Bosch Gmbh | Diagnosing e.g. components damages detecting, method for e.g. diesel engine of motor vehicle, involves recording sound of engine using microphone, and converting sound into electrical signal for diagnosing operating condition of engine |
DE102006059351A1 (en) * | 2006-12-15 | 2008-06-19 | Robert Bosch Gmbh | Method for influencing sound |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1199925A (en) * | 1966-09-08 | 1970-07-22 | Midland Transformer Company Lt | Improvements in or relating to Noise Reduction |
DE4124574A1 (en) * | 1991-07-24 | 1993-01-28 | Wolf Woco & Co Franz J | Hammer drill with vibration isolated handgrip - is hinged onto tool body at one end and connected to other end by preloaded spring coupling |
US5322131A (en) * | 1993-05-20 | 1994-06-21 | Chicago Pneumatic Tool Company | Vibration-reduced pneumatic tool |
DE19646622B4 (en) * | 1996-11-12 | 2004-07-01 | Wacker Construction Equipment Ag | Tool that can be carried in one movement |
CN103268764B (en) * | 2013-05-09 | 2015-11-18 | 浙江大学 | A kind of converter plant based on active noise control in space |
-
2009
- 2009-12-15 DE DE102009054648A patent/DE102009054648A1/en not_active Withdrawn
-
2010
- 2010-10-15 EP EP10770790A patent/EP2512748A1/en not_active Withdrawn
- 2010-10-15 CN CN201080057235.4A patent/CN102655989B/en not_active Expired - Fee Related
- 2010-10-15 RU RU2012129662/02A patent/RU2012129662A/en not_active Application Discontinuation
- 2010-10-15 WO PCT/EP2010/065518 patent/WO2011072908A1/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4566118A (en) * | 1981-11-26 | 1986-01-21 | Sound Attenuators Limited | Method of and apparatus for cancelling vibrations from a source of repetitive vibrations |
US5668744A (en) * | 1995-05-05 | 1997-09-16 | Owens-Corning Fiberglas Technology Inc. | Active noise control using piezoelectric sensors and actuators |
EP1221359A1 (en) * | 2001-01-05 | 2002-07-10 | Robert Bosch Gmbh | Vibration isolating device |
EP1270151A1 (en) * | 2001-06-21 | 2003-01-02 | HILTI Aktiengesellschaft | Percussive electric tool with active damping vibration system |
EP1518638A1 (en) * | 2003-09-02 | 2005-03-30 | Schwäbische Werkzeugmaschinen GmbH | Machine tool with active noise reduction |
EP1736284A1 (en) * | 2005-06-24 | 2006-12-27 | C. & E. Fein GmbH | Hand-held power tool with a damping devic |
DE102006054603A1 (en) * | 2006-11-20 | 2008-05-21 | Robert Bosch Gmbh | Diagnosing e.g. components damages detecting, method for e.g. diesel engine of motor vehicle, involves recording sound of engine using microphone, and converting sound into electrical signal for diagnosing operating condition of engine |
DE102006059351A1 (en) * | 2006-12-15 | 2008-06-19 | Robert Bosch Gmbh | Method for influencing sound |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD906409S1 (en) * | 2018-07-31 | 2020-12-29 | Jins Holdings Inc. | Nose pad for eyeglasses |
EP3610989A1 (en) * | 2018-08-14 | 2020-02-19 | Hilti Aktiengesellschaft | Headset for active noise suppression, helmet comprising such a headset, system comprising such a headset and a hand-held machine tool |
Also Published As
Publication number | Publication date |
---|---|
CN102655989B (en) | 2016-06-15 |
CN102655989A (en) | 2012-09-05 |
RU2012129662A (en) | 2014-01-27 |
EP2512748A1 (en) | 2012-10-24 |
DE102009054648A1 (en) | 2011-06-16 |
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