EP0615483B1 - Exzentertellerschleifer - Google Patents
Exzentertellerschleifer Download PDFInfo
- Publication number
- EP0615483B1 EP0615483B1 EP93920676A EP93920676A EP0615483B1 EP 0615483 B1 EP0615483 B1 EP 0615483B1 EP 93920676 A EP93920676 A EP 93920676A EP 93920676 A EP93920676 A EP 93920676A EP 0615483 B1 EP0615483 B1 EP 0615483B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eccentric
- shaft
- hollow
- gearwheel
- disc
- 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.)
- Expired - Lifetime
Links
- 230000033001 locomotion Effects 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 238000005498 polishing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
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
- B24B23/02—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
Definitions
- the invention is based on an eccentric disc grinder according to the preamble of claim 1. From document DE-C-422 285 are the features of the preamble of claim 1 known.
- EP 406 247 (US Serial No. 566 378) is a Eccentric disc grinder known. Its grinding plate is made by one Motor driven. The rotation of the motor is via an angular gear converted into the working movement resulting from a rotary movement and a circular movement of the grinding plate. The The output shaft of the angular gear is non-rotatable at its free end coupled with an eccentric. This bears a pivot, on the rotationally fixed the grinding disc with an eccentricity "e” for Output shaft is held. The grinding disc circles with the eccentricity "e” around the axis of the output shaft and rotates at the same time as a result of bearing friction and thereby leads the labor movement out.
- the rolling bearings between the eccentric and the journal are non-uniform loads exposed. This leads to heat development and wear. Furthermore is with the known eccentric disc grinders, which are mostly from Angle grinder constructions come from, the distance between grinding plates and bevel gear big. This makes it special when grinding high bearing forces effective. The vibrations also stress of the sanding plate to a high degree is the physical strength of the operator.
- FIG. 1 shows an eccentric disc grinder according to the invention
- FIG 2 shows an enlarged detail according to FIG. 1 with the view of FIG Arrangement of the eccentric shaft carrier with slightly varying function
- Figure 3 shows a further embodiment of an inventive Eccentric disc grinder.
- the eccentric disc grinder 1 shown in Figure 1 has a motor housing 3, on which an electrical connection cable 5 and an on and off switch 7 are arranged.
- an angular drive housing designed housing 9 flanged, which is an upper housing cover 11 carries and one with a grinding plate 13 operatively connected
- the angle drive 14 consists of a small one Bevel gear 15, which sits on a motor shaft 16 and the engine speed transfers to a large bevel gear 17.
- the bevel gear 17 surrounds concentrically, rotatably a hollow shaft 19 rotatable about an axis of rotation 18 designed eccentric.
- the hollow shaft 19 is in the housing 9 in one near the sanding plate and an area distant from the sanding plate in bearings 21, 23 mounted and at the same time forms the output shaft of the angular drive 14.
- the hollow shaft 19 has a bore 25 which is eccentric to the axis of rotation 18 an axis 26.
- the axis 26 is spaced parallel to the axis of rotation 18 with the eccentricity "e”.
- In the eccentric bore 25 is concentric to the axis 26 an eccentric shaft 27 in an upper ball bearing 29 and a lower needle bearing 31.
- a fan sits in a rotationally fixed manner 33 for dust extraction, which also acts as a leveling compound.
- the free end of the eccentric shaft 27 carries an elastic coupling 35, for example an injected plastic part. That follows a rotatably arranged nut 37 with a threaded bore 39 on which is screwed onto the grinding plate 13 by means of a bolt 41.
- the elastic coupling 35 transmits the torsionally and flexibly Force from the eccentric shaft 27 to the grinding plate 13.
- the grinding plate 13 is with recesses regularly distributed over its surface 43 provided, through which grinding dust is extracted from the workpiece can.
- the grinding plate 13 follows the movement of the eccentric shaft 27 it is supported by the elastic coupling 35 on the eccentric shaft 27 from.
- the sanding plate 13 can easily Adjust workpiece surfaces or swivel without tilting the eccentric shaft axis compared to the normal to the workpiece at follow handling of the eccentric disc grinder. Workpieces can do this processed particularly gently, without jerky movements.
- the arrangement of the roller or needle bearing 31 in the vicinity of the grinding plate 13 and the arrangement of the ball bearing 29 far from the grinding plate 13 between eccentric shaft 27 and hollow shaft 19 improves the efficiency the transmission of motion and increases the life of the eccentric disc grinder 1 compared to the prior art, because the radial and axial bearing forces are absorbed separately and so that they are more manageable.
- slightly modified eccentric disc grinder 101 illustrates the arrangement of the designed as an angular gear housing Housing 109 with the upper housing cover 111, the one with the not shown Sanding disc operatively connected angle drive 114 with the small bevel gear 115, motor shaft 116 and large bevel gear 117, the hollow shaft 119 encompassed by the bevel gear 117 in a concentric, rotationally fixed manner and bearings 121, 123.
- the bore 125 which is eccentric to the axis of rotation 118 is particularly good to recognize an axis 126 in which the eccentric shaft is concentric to axis 126 127 in the upper ball bearing 129 and the lower needle bearing 131 is performed.
- the lower end region of the eccentric shaft 127 is non-rotatable arranged leveling compound 133 without fan and without grinding plate shown. At the upper end area, that meshes with the hollow gear 147 Spur gear 145 shown.
- FIG. 1 In contrast to the exemplary embodiment in FIG. 1, this is the case in FIG Hollow shaft 119 longer designed so that it at the lower, free end can carry the balancing mass 133.
- the ring gear 147 Lockable by a locking rod 151, rotatable in a plain bearing 149 arranged on the bevel gear housing 109.
- Eccentric shaft 127 corresponds to the description of Figure 1. Is the locking rod 151 out of engagement with the locking recess 153 in the hollow gear 147, this can rotate and roll the spur gear Dodge 145 so that it does not turn around its own axis 126 but can only circle around axis 118. This movement will passed on to the grinding plate via the eccentric shaft 127 and means a comparatively lower removal rate than at the same time rotating and rotating grinding disc.
- FIG. 3 shows another one, which is basically the same as that of FIGS. 1 and 2 Embodiment of an eccentric disc grinder 161 shown.
- This has a motor housing 162 on which an electrical connection cable 163 and an on and off switch 164 are arranged.
- a housing 165 configured as an angular gear housing is flanged, one with an angular drive that is operatively connected to a grinding plate 167 168 contains.
- the angular drive 168 consists of a small bevel gear 169, which on a motor shaft 170 sits and the motor speed on a large bevel gear 171 transmits.
- the bevel gear 171 grips concentrically, non-rotatably a designed as a hollow shaft 173 rotatable about an axis of rotation 172 Eccentric.
- the hollow shaft 173 is in the housing 165 in a near the grinding plate Roller or needle bearing 175 and in a ball bearing remote from the grinding wheel 174 stored.
- the hollow shaft 173 has an axis of rotation 172 eccentric bore 176 with an axis 177.
- the axis 177 runs spaced parallel to the axis of rotation 172 with the eccentricity "e”.
- In the eccentric bore 176 is an eccentric shaft concentric to the axis 177 178 in an upper ball bearing 179 and a lower needle bearing 180 led.
- a balancing mass sits in a rotationally fixed manner 181.
- the free end of the eccentric shaft 178 carries the Sanding disc 167, which was regularly distributed over its surface Provide recesses 182 through which grinding dust is extracted can.
- a spur gear is seated on the upper end region of the eccentric shaft 178 in a rotationally fixed manner 183, which meshes with a housing-fixed hollow gear 184.
- the Hollow gear 184 is axially displaceably mounted in the housing 165 and by means of a switch button 186 via means not shown in detail engageable or disengageable with spur gear 183.
- roller or needle bearings 175, 180 i.e. the radial Force-absorbing bearing
- the ball bearings 174, 179 i.e. of the axial forces Bearing
- far from the grinding plate 167 between eccentric shaft 178 and hollow shaft 173 as well as between eccentric 173 and housing 165 also improved here the efficiency of motion transmission and increases the service life of the eccentric disc grinder 101 compared to the known eccentric disc grinders clear.
- the adjustment means for changing the processing level or the gear position according to DE-OS 36 02 571 with the housing Hollow gear connected bolts that are in inclined guides or oblique slots in the housing.
- the ring gear is axially displaced in the slots.
- the bolt carries at least one clamping or locking device, by tightening them the adjustment means can be determined.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
Claims (8)
- Exzentertellerschleifer (1, 101, 161) mit einem, insbesondere mehrteiligen, Gehäuse (3, 103, 9, 109, 162, 165), in dem ein Motor mit einer Motorwelle (16, 116, 170) über einen Exzenter (19, 119, 173) einen Schleifteller (13, 113, 167) bewegt, wobei der Exzenter (19, 119, 173) den Schleifteller (13, 113, 167) mit einer Exzentrizität "e" um eine Drehachse (18, 118, 172) kreisend und gleichzeitig um eine zur Drehachse (18, 118, 172) mit der Exzentrizität "e" exzentrische Achse (26, 126, 177) rotierend mitnimmt, wobei
der Exzenter (19, 119, 173) als beidenends offene Hohlwelle mit einer exzentrischen Bohrung (25, 125, 176) ausgestaltet ist, über die eine den Schleifteller (13, 113, 167) tragende Exzenterwelle (27, 127, 178) zumindest einenends hinausragt, undwobei auf der dem Schleifteller (13, 113, 167) fernen Seite der Exzenterwelle (27, 127, 178) ein Stirnzahnrad (45, 145, 183) angeordnet ist, das an einem, insbesondere am Gehäuse (9, 109, 165) angeordneten, als Hohlzahnrad (47, 147, 184) ausgestalteten Gegenrad abrollt, dadurch gekennzeichnet, daß die Exzenterwelle (27, 127, 178) in mindestens zwei Lagern (29, 129, 31, 131; 179, 180) in der Hohlwelle (19, 119, 173) drehbar, insbesondere axial unverschieblich, gehalten wird,in dem zwischen Hohlwelle (19, 119, 173) und Exzenterwelle (27, 127, 178) nahe dem Schleifteller (13, 113, 167) ein Rollenlager (31, 131, 180), insbesondere Nadellager, zur Aufnahme radialer Kräfte angeordnet ist und fern dem Schleifteller (13, 113, 167) ein Kugellager (29, 129, 179) zur Aufnahme axialer Kräfte, angeordnet ist,wobei an der Hohlwelle (19, 119, 173) auf der dem Stirnzahnrad (45, 145, 173) entgegengesetzten Seite mindestens eine, insbesondere als Ventilator dienende, Ausgleichsmasse (33, 133, 181) drehfest angeordnet ist und daß an der Hohlwelle (19, 119, 173) ein Kegel rad (17, 117, 171) drehfest angeordnet ist. - Exzentertellerschleifer nach Anspruch 1, dadurch gekennzeichnet, daß das Hohlzahnrad (147) am Gehäuse (109) mit verstellbarer Reibung drehbar, insbesondere in einem Gleitlager (149), angeordnet ist.
- Exzentertellerschleifer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Stirnzahnrad (45, 145, 173) als Ausgleichsmasse dient.
- Exzentertellerschleifer nach einem der vorhergenden Ansprüche, dadurch gekennzeichnet, daß das Hohlzahnrad (147) durch Arretiermittel (151) an seiner Drehbewegung gehindert werden kann.
- Exzentertellerschleifer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen der Exzenterwelle (27) und dem Schleifteller (13) eine elastische Kupplung (35) angeordnet ist.
- Exzentertellerschleifer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Hohlzahnrad (184) über Verstellmittel (186) axial in eine Einkuppelposition und aus dieser heraus zum Stirnzahnrad (183) verschiebbar ist.
- Exzentertellerschleifer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verstellmittel aus mit dem Hohlzahnrad drehfest verbundenen Bolzen bestehen, die in Schrägschlitzen im Gehäuse geführt sind.
- Exzentertellerschleifer nach Anspruch 7, dadurch gekennzeichnet, daß der Bolzen mindestens eine Klemm- oder Rastvorrichtung trägt, durch deren Festziehen die Verstellmittel festgelegt werden können.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4233728A DE4233728A1 (de) | 1992-10-07 | 1992-10-07 | Exzentertellerschleifer |
DE4233728 | 1992-10-07 | ||
PCT/DE1993/000933 WO1994007654A1 (de) | 1992-10-07 | 1993-10-04 | Exzentertellerschleifer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0615483A1 EP0615483A1 (de) | 1994-09-21 |
EP0615483B1 true EP0615483B1 (de) | 1999-06-09 |
Family
ID=6469861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93920676A Expired - Lifetime EP0615483B1 (de) | 1992-10-07 | 1993-10-04 | Exzentertellerschleifer |
Country Status (7)
Country | Link |
---|---|
US (1) | US5458533A (de) |
EP (1) | EP0615483B1 (de) |
JP (1) | JP3288379B2 (de) |
CN (1) | CN1088000C (de) |
BR (1) | BR9305662A (de) |
DE (2) | DE4233728A1 (de) |
WO (1) | WO1994007654A1 (de) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9423848D0 (en) * | 1994-11-25 | 1995-01-11 | Black & Decker Inc | Improved oscillating hand tool |
US6012213A (en) * | 1995-06-07 | 2000-01-11 | Chang; Joseph J. | Method for forming a rib on a cannula for a tip protection device |
US5595531A (en) * | 1995-07-26 | 1997-01-21 | Ryobi North America | Random orbit sander having speed limiter |
US5582541A (en) * | 1995-08-24 | 1996-12-10 | Hutchins Manufacturing Company | Abrading tool with water feed and removal system |
US5851141A (en) * | 1996-12-09 | 1998-12-22 | Elmore; Ronald W. | Elongated orbital power sander |
DE19848918A1 (de) * | 1998-07-28 | 2000-02-10 | Bernhard Ganser | Schleifvorrichtung für gebogene Flächen |
US6386961B1 (en) * | 1999-07-19 | 2002-05-14 | Thomas D. Cureton | Hand held grinder |
DE19952108B4 (de) | 1999-10-29 | 2007-09-20 | Robert Bosch Gmbh | Exzentertellerschleifmaschine |
JP4558154B2 (ja) * | 2000-07-28 | 2010-10-06 | ケヰテック株式会社 | 偏心量調整装置 |
DE10047202A1 (de) | 2000-09-23 | 2002-04-11 | Bosch Gmbh Robert | Motorgetriebene Handschleifmaschine |
DE10104993A1 (de) * | 2001-02-03 | 2002-08-22 | Bosch Gmbh Robert | Handwerkzeugmaschine zum Schleifen, Polieren oder dergleichen |
US6758731B2 (en) * | 2001-08-10 | 2004-07-06 | One World Technologies Limited | Orbital sander |
DE102006054265B3 (de) * | 2006-11-17 | 2008-04-10 | Festool Gmbh | Handwerkzeugmaschine |
DE102007007787A1 (de) * | 2007-02-16 | 2008-08-21 | Robert Bosch Gmbh | Schleifteller für eine Exzenterschleifmaschine |
US20090111364A1 (en) * | 2007-10-29 | 2009-04-30 | Jinding Group Co., Ltd. | Power tool having an eccentric mass |
AT10804U1 (de) * | 2009-06-04 | 2009-10-15 | Neustifter Johann | Verfahren zum umbau eines verteilergetriebes für mehrere abtriebe |
DE102010043185A1 (de) * | 2010-10-29 | 2012-05-03 | Robert Bosch Gmbh | Werkzeugmaschinenbremsvorrichtung |
DE102011075222A1 (de) * | 2011-05-04 | 2012-11-08 | Robert Bosch Gmbh | Werkzeugmaschinenbremsvorrichtung |
US20120322350A1 (en) * | 2011-06-19 | 2012-12-20 | Mr. ROBERT SCHYWALSKY | Cordless drywall sander |
EP2700473B1 (de) * | 2011-10-26 | 2018-12-19 | Keitech Co., Ltd. | Schleifwerkzeug mit exzentrischer drehwelle |
WO2014083243A1 (en) * | 2012-11-29 | 2014-06-05 | Oy Kwh Mirka Ab | Arrangement and method for grinding spherical products |
CN103862338B (zh) * | 2012-12-12 | 2016-08-17 | 苏州宝时得电动工具有限公司 | 具有推杆式止动机构的角磨机 |
ITVI20130116A1 (it) * | 2013-04-23 | 2014-10-24 | Costa Levigatrici Spa | Macchina levigatrice multiutensile |
CN103286689B (zh) * | 2013-05-30 | 2015-05-27 | 杨文武 | 一种偏心抛光机 |
WO2015164920A1 (en) * | 2014-05-01 | 2015-11-05 | Arbortech Industries Limited | Random orbital sander |
JP6464017B2 (ja) * | 2014-05-09 | 2019-02-06 | 株式会社マキタ | 研磨機 |
DE102014109904A1 (de) * | 2014-07-15 | 2016-01-21 | C. & E. Fein Gmbh | Exzenterschleifer |
DE102014116598A1 (de) * | 2014-11-13 | 2016-05-19 | Vorwerk & Co. Interholding Gesellschaft mit beschränkter Haftung | Vorrichtung, Verwendung einer Vorrichtung und Verfahren zur Oberflächenbearbeitung |
US20180009084A1 (en) * | 2016-07-07 | 2018-01-11 | Stone Pro Equipment Company | Abrading Disc |
DE102016223508A1 (de) * | 2016-11-28 | 2018-05-30 | Robert Bosch Gmbh | Tragbare Werkzeugmaschine |
CN209408223U (zh) * | 2018-01-15 | 2019-09-20 | 苏州宝时得电动工具有限公司 | 打磨工具 |
DE102018115303A1 (de) * | 2018-06-26 | 2020-01-02 | C. & E. Fein Gmbh | Getriebekopf und Handwerkzeugmaschine |
EP3646987B1 (de) * | 2018-10-29 | 2023-06-14 | Guido Valentini | Handgeführtes elektrowerkzeug zum exzenterpolieren oder -schleifen |
EP3693132B1 (de) * | 2019-02-08 | 2023-09-06 | Guido Valentini | Handhaltbares und handgeführtes elektrowerkzeug zum exzenterpolieren oder -schleifen |
DE102021111672A1 (de) * | 2021-05-05 | 2022-11-10 | Georg Weber | Vorrichtung zum Bearbeiten von flächigen Werkstücken |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE422285C (de) * | 1924-11-16 | 1925-11-27 | Julius Geiger G M B H | Poliermaschine zur Holzbearbeitung |
US3496680A (en) * | 1967-08-18 | 1970-02-24 | Alma A Hutchins | Powered revoling abrasive tool |
DE1900889A1 (de) * | 1969-01-09 | 1970-09-24 | Metabowerke Kg | Schwingschleifer |
DE7436615U (de) * | 1974-11-02 | 1976-05-06 | Robert Bosch Gmbh, 7000 Stuttgart | Insbesondere hochtouriger schwingschleifer |
DE2938704C2 (de) * | 1979-09-25 | 1984-03-15 | Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen | Exzentertellerschleifer |
GB8407058D0 (en) * | 1984-03-19 | 1984-04-26 | Black & Decker Inc | Attachments for power tools |
DE3602571C2 (de) * | 1986-01-29 | 1998-09-24 | Bosch Gmbh Robert | Exzentertellerschleifer mit einer Vorrichtung zum Verändern der Schleifbewegung |
US4671019A (en) * | 1986-02-18 | 1987-06-09 | Hutchins Manufacturing Company | Portable power operated sander |
DE3609441A1 (de) * | 1986-03-20 | 1987-09-24 | Bosch Gmbh Robert | Exzenterschleifer mit einer vorrichtung zum veraendern der schleifbewegung |
IT209516Z2 (it) * | 1986-12-22 | 1988-10-10 | Valentini Guido | Utensile elettrico portatile con movimento orbitale bilanciato. |
DE3809930A1 (de) * | 1988-03-24 | 1989-10-05 | Bosch Gmbh Robert | Exzenterschleifer |
DE3906549A1 (de) * | 1989-03-02 | 1990-09-06 | Bosch Gmbh Robert | Exzenterschleifer |
DE3916495A1 (de) * | 1989-05-20 | 1990-11-22 | Bosch Gmbh Robert | Handwerkzeug mit einem getriebegehaeuse mit dichtring |
-
1992
- 1992-10-07 DE DE4233728A patent/DE4233728A1/de not_active Withdrawn
-
1993
- 1993-10-04 EP EP93920676A patent/EP0615483B1/de not_active Expired - Lifetime
- 1993-10-04 BR BR9305662A patent/BR9305662A/pt not_active Application Discontinuation
- 1993-10-04 WO PCT/DE1993/000933 patent/WO1994007654A1/de active IP Right Grant
- 1993-10-04 DE DE59309642T patent/DE59309642D1/de not_active Expired - Lifetime
- 1993-10-04 US US08/232,212 patent/US5458533A/en not_active Expired - Lifetime
- 1993-10-04 JP JP50858894A patent/JP3288379B2/ja not_active Expired - Fee Related
- 1993-10-06 CN CN93118902A patent/CN1088000C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4233728A1 (de) | 1994-04-14 |
CN1086758A (zh) | 1994-05-18 |
US5458533A (en) | 1995-10-17 |
CN1088000C (zh) | 2002-07-24 |
DE59309642D1 (de) | 1999-07-15 |
BR9305662A (pt) | 1996-11-26 |
WO1994007654A1 (de) | 1994-04-14 |
JPH07501756A (ja) | 1995-02-23 |
EP0615483A1 (de) | 1994-09-21 |
JP3288379B2 (ja) | 2002-06-04 |
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