WO2004056535A1 - Getriebe, insbesondere für elektrohandwerkzeugmaschinen - Google Patents
Getriebe, insbesondere für elektrohandwerkzeugmaschinen Download PDFInfo
- Publication number
- WO2004056535A1 WO2004056535A1 PCT/DE2003/002427 DE0302427W WO2004056535A1 WO 2004056535 A1 WO2004056535 A1 WO 2004056535A1 DE 0302427 W DE0302427 W DE 0302427W WO 2004056535 A1 WO2004056535 A1 WO 2004056535A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gear
- output shaft
- driver
- radial
- pockets
- 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
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/124—Elastomeric springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/14—Construction providing resilience or vibration-damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/14—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19633—Yieldability in gear trains
Definitions
- Gearboxes in particular for electric hand machine tools
- the invention relates to a gear, in particular for electric hand machine tools, according to the preamble of patent claim 1.
- Sintered gears with spiral or straight toothing are used in gearboxes for electric hand machine tools for cost reasons. Cut gears, the production costs of which are relatively high, are only used if high demands are placed on smooth running. Plastic gearwheels, which can be manufactured at a similar cost to sintered gearwheels, can only transmit small torques and are therefore only used in a few exceptional cases in electric hand machine tools.
- Gear pairs composed of sintered gears have the disadvantage of large tolerances due to production, which causes a loud running noise and has a negative effect on the service life.
- Electric hand machine tools with the features of claim 1, have the advantage that the damping elements switched on between the drive gear and the output shaft, which are preferably made of rubber or a rubber-like material with a high damping factor and act in the circumferential direction or tangential direction, not only in the gear pairing
- Existing tolerances, in particular pitch errors, profile deviation and concentricity errors are compensated for, as a result of which gear noises and vibrations caused by the gearbox decrease significantly, but also the very high starting forces acting on the teeth, which occur when the drive motor rotating the drive shaft is switched on due to the inertia of the drive and driven masses occur, and the load peaks occurring on the teeth during operation are reduced.
- this leads to a great smoothness of sintered gears and regardless of the type of gears (sintered or cut) due to the reduced mechanical load to a long service life of the gear.
- the driven gear is rotatably seated on the driven shaft and has pockets delimited by radial side walls and offset in the circumferential direction from one another.
- the damping elements lie in the pockets in contact with the radial side walls and are held on a driver connected in a rotationally fixed manner to the output shaft, which is fixed axially immovably on the output shaft.
- the driver has a ring which is positively and positively seated on the output shaft and a number of radial webs corresponding to the number of pockets in the output gearwheel, one of which projects into a pocket.
- each pocket there are two damping elements lying on each side of the radial web, of which each damping element is supported on the one hand on the radial web and on the other hand on a radial side wall of the pocket.
- the damping elements can be placed in the pockets or connected to the radial webs, for example sprayed onto the radial webs.
- Fig. 1 is an angular gear for an electric hand machine tool in
- Fig. -2 is a perspective view of the composite
- Fig. 3 shows a matrix for a clear compilation of possible
- the exploded view of the bevel gear in FIG. 1 for an electric hand machine tool as an exemplary embodiment of a general gear has a drive shaft 11 which can be driven by an electric motor the drive shaft 11 rotationally seated drive gear 12, which is designed here as a bevel pinion with pinion teeth 121, an output gear 13 meshing with the drive gear 12, which is designed as a ring gear with spur gear teeth 131, and one driven by the output gear 3 Output shaft 14 on.
- the output gear 13 is rotatably and axially immovably seated on the output shaft 14, wherein it is supported in the axial direction on the one hand on an annular shoulder 15 formed on the output shaft 14 (FIG.
- the driver 16 has a ring 17 enclosing the output shaft 14 and a plurality, in the exemplary embodiment three radial webs 18 which are offset in the circumferential direction and which are formed in one piece with the ring 17 or instead are in several parts.
- the output shaft 14 carries in the area of the ring 17 two diametrically arranged axial grooves 19 and the ring 17 two diametrically arranged cams 20 which protrude on the inner ring surface and which positively immerse in the axial grooves 19.
- the radial webs 18 are offset by the same circumferential angle and each protrude centrally into pockets 21 which are formed in the output gear 13 at the same angular distance from one another as the radial webs 18.
- the pockets 21 are each delimited in the circumferential direction by radially aligned side walls 211.
- Two damping elements 22 made of resilient material, for example rubber, are arranged in each pocket 21, each damping element 22 abutting a radial web 18 on the one hand and a side wall 211 of the pocket 21 on the other hand.
- the damping elements 22 are either inserted into the pockets 21 during assembly of the gearbox or previously connected to the radial webs 18.
- the output gear 13 can initially by compressing the in the direction of rotation. turn the rear damping element 22 by a few degrees, then to rotate the driver 16 via the radial webs 18 and - since the driver 16 is non-rotatably seated on the output shaft 14 - to drive the output shaft 14.
- the damping elements 22 thus ensure that rotation already takes place in the output gear 13 without a rotation occurring on the output shaft 14. As a result of this deceleration, the maximum acceleration occurring is reduced and the time until the full idling speed of the output shaft 14 is extended. The high load on the toothing between the drive gear 12 and the output gear 13 is thus reduced during startup.
- the damping elements 22 dampen the clashing of the teeth between the pinion toothing 121 and the front toothing 131, which leads to a significant reduction in the rattle of the gear, which can be clearly heard in conventional electric hand-held power tools, particularly when the electric hand-held power tool starts or stops.
- Decisive for this are in particular the front damping elements 22, which dampen the shocks occurring in the opposite direction to the direction of rotation.
- the tool When working with the electric hand machine tool, the tool may briefly hook into the workpiece. For example, when working with angle grinders and cutting discs, this is a frequently occurring work case. With this hooking, which is equivalent to a brief blocking of the tool, extreme forces are exerted on the toothings 121, 131 between the drive gear 12 and the output gear 13. These force peaks are effectively weakened by the damping elements 22, which leads to a reduction in the recoil moment which the operator has to absorb and thus represents an increase in comfort for the operator, overall the mechanical loads on the transmission are reduced, which leads to longer service life and is noticeable leads to greater comfort because gear vibrations, Gear shocks u. transferred to the machine housing in a greatly reduced manner.
- the pockets 21 are designed with a rectangular, clear cross section, which are delimited in the circumferential direction by two radial, flat side walls 211.
- the radial webs 18 projecting into the pockets 21 have a rectangular cross section.
- the damping elements 22 can have any geometry. In the exemplary embodiment they are e.g. formed as a roller-shaped, elastic body, which are aligned parallel to the axis of the output shaft 14. Modified geometries of the pockets 21 and the radial webs 18 are of course possible, it also being possible to vary the number of radial webs 18 and accordingly the number of pockets 21.
- FIG. 3 shows a matrix which shows possible combinations of pocket geometries and radial web geometries.
- Various clear profiles of the pockets 21 are shown in the top line and various profiles of the radial webs 18 are indicated in the left column. All pocket profiles A, B, C and D can be combined with the corresponding radial web profiles in lines 1, 2, 3 and 4.
- the matrix is self-explanatory, so that only a few special features are pointed out:
- the pocket 21, as in the exemplary embodiment in FIGS. 1 and 2, has flat side walls.
- the side walls are provided with bulges, which can be either arched or angular.
- the profiles of the radial webs 18 can, as shown in the left column " , be rectangular, wedge-shaped, and rectangular with indentations (line 3) and indentations (Line 4).
- the damping elements 22 are still supported on the radial web 18 and on the two side walls 211 of the pockets 21.
- the damping elements 22 are either spherical or cylindrical in shape, with the cylindrical shape extending in the radial direction.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03813519A EP1575742B1 (de) | 2002-12-19 | 2003-07-21 | Getriebe, insbesondere für elektrohandwerkzeugmaschinen |
DE50306932T DE50306932D1 (de) | 2002-12-19 | 2003-07-21 | Getriebe, insbesondere für elektrohandwerkzeugmaschinen |
US10/528,987 US20060191365A1 (en) | 2002-12-19 | 2003-07-21 | Gearset, in particular for electric hand machine tools |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10259519.4 | 2002-12-19 | ||
DE10259519A DE10259519A1 (de) | 2002-12-19 | 2002-12-19 | Getriebe, insbesondere für Elektrohandwerkzeugmaschinen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004056535A1 true WO2004056535A1 (de) | 2004-07-08 |
Family
ID=32403966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/002427 WO2004056535A1 (de) | 2002-12-19 | 2003-07-21 | Getriebe, insbesondere für elektrohandwerkzeugmaschinen |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060191365A1 (de) |
EP (1) | EP1575742B1 (de) |
CN (1) | CN100467232C (de) |
DE (2) | DE10259519A1 (de) |
WO (1) | WO2004056535A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007025805A2 (de) * | 2005-08-31 | 2007-03-08 | Robert Bosch Gmbh | Bohrhammer |
WO2007068535A2 (de) * | 2005-12-12 | 2007-06-21 | Robert Bosch Gmbh | Handwerkzeugmaschine mit einem antriebsstrang und einer entkopplungseinheit |
WO2007087909A1 (de) * | 2006-01-16 | 2007-08-09 | Robert Bosch Gmbh | Getriebe, insbesondere für elektrohandwerkzeugmaschinen |
WO2007089039A1 (en) * | 2006-02-03 | 2007-08-09 | Hitachi Koki Co., Ltd. | Power tool |
CN104455342A (zh) * | 2014-12-10 | 2015-03-25 | 衡阳泰豪通信车辆有限公司 | 一种手动力矩输入装置 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4730580B2 (ja) * | 2004-04-12 | 2011-07-20 | 日立工機株式会社 | 電動工具及び歯車装置 |
JP2007050454A (ja) * | 2005-08-12 | 2007-03-01 | Hitachi Koki Co Ltd | インパクト工具 |
WO2007057168A1 (de) * | 2005-11-16 | 2007-05-24 | Ims Gear Gmbh | Kraftfahrzeug-zahnrad-anordnung für ein kraftfahrzeug-hilfsgetriebe und lenkkraftunterstützungsantriebs-zahnradanordnung |
DE102006040090A1 (de) * | 2006-08-28 | 2008-03-06 | Rieth, Stephan, Dipl.-Ing. | Fräswerkzeug, insbesondere einer Handfräsmaschine zum Fräsen von Fasen |
DE102007008834A1 (de) * | 2006-12-18 | 2008-06-19 | Borgwarner Inc.(N.D.Ges.D.Staates Delaware), Auburn Hills | Torsionsschwingungsdämpfer mit mehrteiligem Primärelement |
DE202007010699U1 (de) * | 2007-08-01 | 2007-10-04 | Robert Bosch Gmbh | Handwerkzeugmaschine |
DE102009000065A1 (de) * | 2009-01-08 | 2010-07-15 | Robert Bosch Gmbh | Werkzeuggerät mit einer durch eine Antriebsvorrichtung angetriebenen Spindel |
JP5501891B2 (ja) * | 2009-10-23 | 2014-05-28 | 株式会社マキタ | ギヤ列の緩衝機構 |
DE102010030494A1 (de) * | 2010-06-24 | 2011-12-29 | Robert Bosch Gmbh | Ankerwellenlagereinheit |
JP5566840B2 (ja) * | 2010-10-04 | 2014-08-06 | 株式会社マキタ | 回転工具 |
TWI441992B (zh) * | 2011-09-27 | 2014-06-21 | Hon Hai Prec Ind Co Ltd | 齒輪傳動裝置 |
DE102012215458A1 (de) * | 2012-08-31 | 2014-03-06 | Robert Bosch Gmbh | Werkzeugmaschine |
DE102012220415A1 (de) * | 2012-11-09 | 2014-05-28 | Robert Bosch Gmbh | Handwerkzeuggetriebeeinheit |
DE102012224442A1 (de) | 2012-12-27 | 2014-07-03 | Robert Bosch Gmbh | Werkzeugmaschinenvorrichtung |
CN107139140B (zh) * | 2017-07-05 | 2024-03-19 | 永康市皇冠电动工具制造有限公司 | 一种具有对中装置的手持式工具机 |
AT520740B1 (de) * | 2018-02-15 | 2019-07-15 | Miba Sinter Austria Gmbh | Zahnrad |
DE102020200919A1 (de) | 2020-01-27 | 2021-07-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Zahnrad für einen elektrischen Antrieb |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3922552A1 (de) * | 1989-07-08 | 1991-01-17 | Licentia Gmbh | Handgefuehrtes elektrowerkzeug |
WO1996041087A1 (en) * | 1995-06-07 | 1996-12-19 | Fenelon Paul J | Stress reduction gear and apparatus using same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1425616A (en) * | 1921-01-03 | 1922-08-15 | Spicer Mfg Corp | Flexible coupling |
US2764003A (en) * | 1953-09-30 | 1956-09-25 | Louis P Croset | Flexible couplings |
US2961856A (en) * | 1957-01-30 | 1960-11-29 | Int Harvester Co | Cog wheel construction |
US4328879A (en) * | 1978-04-27 | 1982-05-11 | The Gates Rubber Company | Shock-absorbing sprocket, drive assembly, and the like |
ES480783A1 (es) * | 1979-05-09 | 1980-01-16 | Damper Iberica Sa | Perfeccionamientos en los mecanismos para el acoplamiento - elastico de un eje motor con uneje conducido. |
US5797540A (en) * | 1997-01-27 | 1998-08-25 | Generac Corporation | Method of making a power-transmitting coupling |
-
2002
- 2002-12-19 DE DE10259519A patent/DE10259519A1/de not_active Withdrawn
-
2003
- 2003-07-21 WO PCT/DE2003/002427 patent/WO2004056535A1/de active IP Right Grant
- 2003-07-21 US US10/528,987 patent/US20060191365A1/en not_active Abandoned
- 2003-07-21 EP EP03813519A patent/EP1575742B1/de not_active Expired - Lifetime
- 2003-07-21 DE DE50306932T patent/DE50306932D1/de not_active Expired - Lifetime
- 2003-07-21 CN CNB038256908A patent/CN100467232C/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3922552A1 (de) * | 1989-07-08 | 1991-01-17 | Licentia Gmbh | Handgefuehrtes elektrowerkzeug |
WO1996041087A1 (en) * | 1995-06-07 | 1996-12-19 | Fenelon Paul J | Stress reduction gear and apparatus using same |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007025805A2 (de) * | 2005-08-31 | 2007-03-08 | Robert Bosch Gmbh | Bohrhammer |
WO2007025805A3 (de) * | 2005-08-31 | 2007-06-07 | Bosch Gmbh Robert | Bohrhammer |
WO2007068535A2 (de) * | 2005-12-12 | 2007-06-21 | Robert Bosch Gmbh | Handwerkzeugmaschine mit einem antriebsstrang und einer entkopplungseinheit |
WO2007068535A3 (de) * | 2005-12-12 | 2007-10-11 | Bosch Gmbh Robert | Handwerkzeugmaschine mit einem antriebsstrang und einer entkopplungseinheit |
WO2007087909A1 (de) * | 2006-01-16 | 2007-08-09 | Robert Bosch Gmbh | Getriebe, insbesondere für elektrohandwerkzeugmaschinen |
JP2009523973A (ja) * | 2006-01-16 | 2009-06-25 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 伝動装置、殊に電動式手持ち工作機械のための伝動装置 |
JP4928566B2 (ja) * | 2006-01-16 | 2012-05-09 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 伝動装置、殊に電動式手持ち工作機械のための伝動装置 |
US8534378B2 (en) | 2006-01-16 | 2013-09-17 | Robert Bosch Gmbh | Transmission, in particular for electric hand-held power tools |
WO2007089039A1 (en) * | 2006-02-03 | 2007-08-09 | Hitachi Koki Co., Ltd. | Power tool |
CN104455342A (zh) * | 2014-12-10 | 2015-03-25 | 衡阳泰豪通信车辆有限公司 | 一种手动力矩输入装置 |
Also Published As
Publication number | Publication date |
---|---|
DE50306932D1 (de) | 2007-05-10 |
CN100467232C (zh) | 2009-03-11 |
CN1717301A (zh) | 2006-01-04 |
DE10259519A1 (de) | 2004-07-01 |
US20060191365A1 (en) | 2006-08-31 |
EP1575742B1 (de) | 2007-03-28 |
EP1575742A1 (de) | 2005-09-21 |
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