EP3359334A1 - Hand-werkzeugmaschine - Google Patents
Hand-werkzeugmaschineInfo
- Publication number
- EP3359334A1 EP3359334A1 EP16805468.2A EP16805468A EP3359334A1 EP 3359334 A1 EP3359334 A1 EP 3359334A1 EP 16805468 A EP16805468 A EP 16805468A EP 3359334 A1 EP3359334 A1 EP 3359334A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- shaft
- hand
- machine
- rotation
- 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
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 137
- 230000000903 blocking effect Effects 0.000 claims abstract description 29
- 230000033001 locomotion Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 36
- 239000000428 dust Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 25
- 239000002775 capsule Substances 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/26—Accessories, e.g. stops
Definitions
- the handheld machine tool The handheld machine tool
- the invention relates to a hand-held machine tool, in particular a grinding machine and / or polishing machine, with an eccentric gear arranged in a machine housing and an electric or pneumatic drive motor for rotatably driving a drive shaft of the eccentric gear about a drive axis, wherein the eccentric gear has a tool shaft for carrying out eccentric rotatably supported by eccentric movements based on at least one tool shaft bearing on the drive shaft and a tool holder for a plate tool, in particular a grinding plate or polishing plate, wherein a forced rotation guide is provided which imposes rotational movements with respect to the machine housing in a forced rotation eccentric mode of the tool shaft in that a rolling element of the forced rotation guide rolls on another rolling element of the forced rotation guide, wherein one rolling element on the machine housing and the other W älz emotions is supported on the tool shaft.
- Such a hand-held machine tool is explained, for example, in DE 10 2010 012 025.
- the operator can manually switch the machine between forced rotation eccentric mode and a free wheel eccentric mode.
- the tool shaft makes defined rotational motions by rolling a planetary gear connected to the tool shaft against a ring gear supported on the machine housing.
- the ring gear is out of engagement with the planetary gear, the tool shaft can rotate relatively freely and is carried along by the at least one tool shaft bearing.
- the switching between the Bet ebsmodi is complicated.
- a freewheel device is arranged, the at least one rolling element on the machine housing or the tool shaft in a first direction of rotation of the tool shaft , which corresponds to a locking direction of the freewheel device, supported with a roll suitable for rolling the other supporting force, in particular rotatably coupled, so that one, supported on the tool shaft rolling elements can roll on the other, supported on the machine housing rolling elements, and in a second direction of rotation the tool shaft, which corresponds to a freewheeling direction of the freewheel device rotatably releases, so that the tool shaft without relative rotation of the rolling elements to each other with respect to the machine housing is rotatable and / or supported on the tool shaft W älzConsequently can take the rotationally supported on the machine housing rolling elements and / or the tool shaft associated rolling elements can be kept wholly or substantially rotationally fixed by the rolling body associated with the machine housing.
- supported on the tool shaft rolling elements can take the rotationally supported on the machine housing rolling elements.
- the tool shaft associated rolling elements in the second rotational direction is rotatable, so that it can be held stationary or substantially stationary supported on the machine housing and supported in the second rotational direction non-rotatable rolling elements.
- the forced rotation eccentric mode is therefore active in the first direction of rotation of the tool shaft, so that the forced rotation guide of the tool shaft can force a certain rotation relative to the machine housing, so to speak.
- the freewheel device locks in this case.
- the rolling element can no longer rotate freely relative to the component on which it is supported by the freewheel device, ie the machine housing or the tool shaft.
- the rolling element which is still supported in the first direction of rotation of the tool shaft or the blocking direction of the freewheel device is released, so it can rotate freely and be carried along by the other rolling element or remain supported on the other rolling element.
- the tool shaft is no longer guided by the forced rotation guide, that is no longer in the forced rotation eccentric mode.
- the forced rotation eccentric mode is thus activated in the reverse direction of the freewheel device, deactivated in the freewheeling direction of the freewheel device.
- the tool shaft expediently uses the forced rotation guide to carry out a forced rotation about its axis of rotation that changes its rotational angle position relative to the machine housing of the hand-held machine tool.
- the freewheel device completely locks, so a mobility of the locked rolling element relative to the component on which it is supported via the freewheel device is completely prevented.
- a ring gear in this case no longer rotate relative to the machine housing.
- lower supporting force provided by the freewheel device in the blocking position is, but a rotation inhibition.
- the rolling element is then not completely blocked relative to the supporting component, so the machine housing or the tool shaft, but can not rotate freely, but is inhibited in terms of rotation.
- the support force may thus be slightly less than a force which is necessary for a complete blocking or blocking of a relative movement of the supported rolling element to the supporting component, the machine housing or the tool shaft.
- the forced rotation eccentric mode is off, there is a free rotation eccentric mode.
- the tool shaft in the second rotational direction in a free rotation eccentric mode wherein the tool shaft rotates due to a bearing friction of the at least one tool shaft bearing during a rotation of the drive shaft and is freely rotatable relative to the drive axle.
- the mobility is still limited by a certain bearing friction, but in the sense of a free mobility is to be understood that the previously still supporting rolling elements can be taken from the other rolling elements.
- the manual machine tool expediently has braking means for braking the tool shaft or the plate tool arranged thereon.
- the braking means comprise, for example, a brake body, a sealing collar or other brake means which act on the tool shaft or the tool or both the brake means are in particular for the operation
- Hand machine tool provided with disabled forced rotation eccentric mode.
- one of the rolling elements is a ring gear and the other rolling elements is or has a planetary gear.
- the planet gear is received in the ring gear and can roll on this.
- the ring gear is assigned to the machine housing, while the planet gear is associated with the tool shaft.
- a planetary gear is provided on the machine housing to the Ring gear circles so to speak, which in turn is fixed to the tool shaft.
- one of the rolling bodies is designed as a sun wheel, around which a rolling body configured as a planetary wheel revolves, as it were, or a planet wheel rolls over.
- the rolling elements have a toothing, so that they would come together with their teeth. But it is also possible that the rolling elements are frictionally moved along each other due to a frictional engagement, i. that the one rolling element frictionally rolls on the other rolling elements or rolls off when the first direction of rotation is set and the freewheel device assumes the blocking direction or blocking position.
- the hand tool machine can also have several freewheel devices.
- a freewheel device it is possible for a freewheel device to be arranged between the rolling element, which is assigned to the tool shaft, and the tool shaft, while a further freewheel device is arranged between the machine housing and the rolling element, which is assigned to the machine housing. It is for example possible that one of these freewheel devices in the blocking position completely blocks a rotational movement of the rolling element arranged on it, while the other freewheel device brakes the rolling elements arranged on it in the blocking position, thus inhibiting its rotational movement or rotational mobility. The other freewheel device thus does not cause a complete blockage of the rotational movement of the rolling element associated therewith.
- the rolling body which is rotatably supported on the basis of the at least one freewheel device with respect to the machine housing or the tool shaft, based on a pivot bearing, in particular a rolling bearing, be particularly preferably a ball bearing, with respect to the machine housing or the tool shaft is rotatable when the freewheel device assumes the freewheeling direction and rotates the tool shaft in the second direction of rotation.
- the freewheel device is arranged on a bearing or forms part of a bearing with which the rolling element is rotatably mounted with respect to the machine housing or the tool shaft. It is possible, for example, for a bearing, in particular a rotary bearing, particularly preferably a ball bearing, to be used which has an integral freewheel device.
- the at least one tool shaft bearing has a first and a second tool shaft bearing, which have a distance with respect to the drive axis or the longitudinal extent of the drive shaft. It is particularly preferred if the two tool shaft bearings are provided on the respective longitudinal end regions of the tool shaft and / or the respective longitudinal end regions of the drive shaft.
- the tool shaft is a hollow shaft, in the interior of which the drive shaft is arranged.
- the drive shaft is arranged in an inner space of the tool shaft or engages in an inner space of the tool shaft.
- the tool shaft can be mounted eccentrically on the outside of the drive shaft.
- the drive shaft has an interior, for example, designed as a hollow shaft, in which the tool shaft is arranged. It is advantageous if the drive shaft has a hollow shaft or is designed as a hollow shaft, in which the tool shaft is arranged.
- the tool shaft is accommodated eccentrically in the drive shaft.
- the at least one tool shaft bearing is arranged for example in the interior of the drive shaft and supports the tool shaft.
- the tool shaft protrudes at a side remote from the tool holder portion in front of the drive shaft and carries one of the rolling elements, such as the planet or a ring gear.
- the drive motor between the tool holder and at least one of the rolling elements, such as a planetary gear, arranged. This results in favorable weight distribution.
- the drive motor is arranged between the tool holder and the forced rotation guide.
- the drive motor directly drives the drive shaft.
- the drive motor is a direct drive.
- the drive shaft is preferably provided or formed by the motor shaft of the drive motor.
- the drive shaft in the form of a hollow shaft can e.g. be the motor shaft.
- the drive motor 30 has a stator 31, in the interior of which a rotor 32 is rotatably received.
- the drive motor 30 further has an excitation coil arrangement 33, which is energized by the energizing device 25.
- the excitation coil assembly 33 is arranged on a laminated core 34, which allows an optimal magnetic flux.
- the tool shaft 50 is rotatably mounted on the drive shaft.
- the tool shaft bearings 42, 44 are provided on bearing receivers 41, 43 in the interior H of the hollow shaft 36 or drive shaft 35.
- an electrical direction of rotation of the drive motor 30 by a certain key sequence, for example trigger by corresponding long or short operation of the switch 30.
- a switching sequence of two or three short presses of the switch 30 may be associated with the direction of rotation D1 and thus the forced rotation eccentric mode, while pressing the switch 30 twice or three times with predetermined pauses is associated with the direction of rotation D2 and thus with the free rotation eccentric mode ,
- a suction chamber 96 is provided, which communicates with the suction channel 21. If air dust S is sucked through the suction channel 21, a lower pressure prevails in the suction chamber 96 than on the side facing away from the suction chamber 96, the drive motor 30 facing portion of the fan 39, so dust D not in the range of the drive motor 30 and ultimately in the The region of the forced rotation guide 54 and the freewheel assembly 60 flows, but conversely at best from this, so to speak, clean region or fresh air region in the direction of the suction chamber 96. As a result, the dust load of the drive motor is increased. sector 30 and the forced rotation guide 54 and the freewheel assembly 60 low.
- Hand machine tool 1 10 are essentially the same components as in the hand-held machine tool 10 already described, in particular designed as a direct drive drive motor 30.
- the drive motor 30 is not or only schematically shown, as well as its drive shaft 35, but in the drive shaft 35 arranged and driven by the drive shaft 35 tool shaft 50.
- At the upper longitudinal end of the tool shaft 50 of the example designed as a planetary roller 55 is provided, which can roll on the designed as a ring gear 58 rolling elements 57 in principle, when a freewheel assembly 160 with a freewheel device 162 in their blocking position is.
- the rolling element 55 can take the rolling element 57 when the freewheel device 162 assumes its freewheeling position.
- the associated directions of rotation D1 and D2 of the tool shaft 50 are shown in FIGS. 6 and 7.
- a holding projection 148 which serves to hold a holding body 170.
- the holding body 170 serves in principle to keep the freewheel device 160 with respect to the machine housing 1 1 stationary and also a bearing assembly with a bearing 161 for rotatable bearings of the rolling body 57 to hold.
- the holding body 170 is provided, for example, with a holding projection 171 which is connected to the holding projection 148 of the motor housing 145. For example, corresponding plug receptacles and plug-in projections engage each other.
- a bearing projection 159 projects in front of the rolling elements 57, on whose radial outer circumference the bearing 161 is provided.
- the bearing projection 159 is configured, for example, in the manner of a pin or a sleeve.
- the output of the drive motor 230 thus initially drives the transmission gear 281.
- an actuating element 282 for example, a first gear stage and a second gear stage, which represent different gear ratios, can be switched.
- the actuating element 282 projects, for example, in front of the machine housing 21 1.
- the output 283 of the transmission gear 281 drives the direction of rotation gearbox or manual transmission 284.
- the gearbox 284 which is actuated via an actuating element 285, for example, the direction of rotation of an output 286 of the gearbox 284 is switchable.
- the drive motor 230 between a first and a second rotational direction of the drive shaft 235 can be switched.
- the rolling element 357 is fixedly arranged on retaining projections 348 which protrude, for example, against a peripheral wall of the machine housing 21 1.
- the free-wheel parts 363 and 364 are not rotatable relative to each other, which is why the ring gear or the rolling element 355 rolls on the outer circumference of the rolling element 357.
- friction surfaces provided or a toothing.
- the freewheeling parts 363 and 364 can rotate relative to each other, which is why the rolling elements 355 can remain stationary with respect to the machine housing 21 1, so to speak. In this case, so rotates the tool shaft 250 with respect to the machine housing 21 1 apart from a braking by the brake body 20 free.
- the suction chamber 296 can be sucked off via the already explained suction channel 21 and the suction connection 22. Dusty air S can flow via inlet openings 93 on the plate tool 14 into the suction chamber 296.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP23200233.7A EP4292760A3 (de) | 2015-12-08 | 2016-12-05 | Hand-werkzeugmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015121305.2A DE102015121305A1 (de) | 2015-12-08 | 2015-12-08 | Hand-Werkzeugmaschine |
PCT/EP2016/079745 WO2017097701A1 (de) | 2015-12-08 | 2016-12-05 | Hand-Werkzeugmaschine |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23200233.7A Division EP4292760A3 (de) | 2015-12-08 | 2016-12-05 | Hand-werkzeugmaschine |
EP23200233.7A Division-Into EP4292760A3 (de) | 2015-12-08 | 2016-12-05 | Hand-werkzeugmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3359334A1 true EP3359334A1 (de) | 2018-08-15 |
EP3359334B1 EP3359334B1 (de) | 2023-11-08 |
Family
ID=57471904
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16805468.2A Active EP3359334B1 (de) | 2015-12-08 | 2016-12-05 | Hand-werkzeugmaschine |
EP23200233.7A Pending EP4292760A3 (de) | 2015-12-08 | 2016-12-05 | Hand-werkzeugmaschine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23200233.7A Pending EP4292760A3 (de) | 2015-12-08 | 2016-12-05 | Hand-werkzeugmaschine |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP3359334B1 (de) |
CN (1) | CN108290265B (de) |
DE (2) | DE102015121305A1 (de) |
WO (1) | WO2017097701A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11085420B2 (en) * | 2017-07-06 | 2021-08-10 | Amber Kinetics, Inc. | Grease channel for reducing gas permeation into vacuum chambers |
EP3656503B1 (de) * | 2018-10-29 | 2023-10-18 | Guido Valentini | Handhaltbares und handgeführtes elektrowerkzeug zum exzenterpolieren oder -schleifen |
WO2020136086A1 (de) * | 2018-12-27 | 2020-07-02 | Robert Bosch Gmbh | Handwerkzeugmaschine |
EP3736084B1 (de) * | 2019-05-07 | 2021-03-10 | Guido Valentini | Handhaltbares elektrowerkzeug zum schleifen oder polieren eines werkstücks |
DE202019106967U1 (de) * | 2019-12-13 | 2021-03-16 | C. & E. Fein Gmbh | Elektrische Handwerkzeugmaschine |
US20220143775A1 (en) * | 2020-11-10 | 2022-05-12 | Snap-On Incorporated | Pneumatic tool with gear train |
CN113333868B (zh) * | 2021-06-30 | 2022-05-27 | 燕山大学 | 基于摩擦离合的失气制动式气动切割机 |
CN113369574B (zh) * | 2021-06-30 | 2022-05-27 | 燕山大学 | 设有抱刹的切割装置 |
WO2023146487A1 (en) * | 2022-01-25 | 2023-08-03 | Silica-Gem Turizm Sanayi Ticaret Limited Sirketi | Spiral shaft configuration in corrosion and polishing machines |
EP4342632A1 (de) * | 2022-09-21 | 2024-03-27 | Guido Valentini | Handgeführtes, motorisch angetriebenes polier- oder schleifwerkzeug |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3364625A (en) * | 1965-10-21 | 1968-01-23 | Albertson & Co Inc | Drive for surface-finishing tool |
JPS63288657A (ja) * | 1987-05-21 | 1988-11-25 | Yasuhara Kk | 研磨装置 |
DE4012774C1 (en) * | 1990-04-21 | 1991-10-10 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De | Manual eccentric grinder with rotation reverser - which is used for grinding wheel switching on and off, with eccentric spindle hub centring machine gear |
DE19629989C2 (de) * | 1996-07-25 | 1999-01-28 | Metabowerke Kg | Schleifer mit einem mittels eines Antriebmotors mit Exzenterhub angetriebenen Werkzeug |
DE59709119D1 (de) * | 1996-12-05 | 2003-02-13 | Bosch Gmbh Robert | Handwerkzeugmaschine |
WO1998038014A1 (de) * | 1997-02-28 | 1998-09-03 | Robert Bosch Gmbh | Motorisch angetriebenes handaggregat |
DE19901122A1 (de) * | 1999-01-14 | 2000-07-20 | Bosch Gmbh Robert | Motorgetriebener Exzentertellerschleifer |
DE10134308A1 (de) * | 2001-07-14 | 2003-01-30 | Bosch Gmbh Robert | Handwerkzeugmaschine |
GB0500469D0 (en) * | 2005-01-11 | 2005-02-16 | Positec Group Ltd | Tool |
CN101172331A (zh) * | 2006-11-02 | 2008-05-07 | 苏州宝时得电动工具有限公司 | 多功能砂光机 |
DE102010012025B4 (de) | 2010-03-19 | 2022-02-03 | Festool Gmbh | Hand-Werkzeugmaschine mit einem Drehwinkel-Führungsmittel aufweisenden Exzentergetriebe |
DE102011103559B3 (de) * | 2011-05-30 | 2012-11-15 | Benz GmbH Werkzeugsysteme | Schleifaggregat mit einer in einer Schleifspindel angeordneten Exzenterwelle |
-
2015
- 2015-12-08 DE DE102015121305.2A patent/DE102015121305A1/de not_active Withdrawn
-
2016
- 2016-12-05 WO PCT/EP2016/079745 patent/WO2017097701A1/de active Application Filing
- 2016-12-05 DE DE112016004577.8T patent/DE112016004577A5/de not_active Withdrawn
- 2016-12-05 CN CN201680071717.2A patent/CN108290265B/zh active Active
- 2016-12-05 EP EP16805468.2A patent/EP3359334B1/de active Active
- 2016-12-05 EP EP23200233.7A patent/EP4292760A3/de active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2017097701A1 (de) | 2017-06-15 |
DE102015121305A1 (de) | 2017-06-08 |
EP4292760A3 (de) | 2024-02-21 |
EP4292760A2 (de) | 2023-12-20 |
CN108290265A (zh) | 2018-07-17 |
DE112016004577A5 (de) | 2018-06-28 |
EP3359334B1 (de) | 2023-11-08 |
CN108290265B (zh) | 2021-06-08 |
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