EP0406247A1 - Exzenterschleifer. - Google Patents
Exzenterschleifer.Info
- Publication number
- EP0406247A1 EP0406247A1 EP19890901938 EP89901938A EP0406247A1 EP 0406247 A1 EP0406247 A1 EP 0406247A1 EP 19890901938 EP19890901938 EP 19890901938 EP 89901938 A EP89901938 A EP 89901938A EP 0406247 A1 EP0406247 A1 EP 0406247A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eccentric
- grinding plate
- grinding
- housing
- grinder
- 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
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
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
- B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
Definitions
- the invention is based on an eccentric grinder according to the preamble of the main claim.
- a grinder as described in DE-OS 36 09 441
- the sprockets forming the eccentric gear are partly fixed on a toothed ring, partly directly on the grinding plate. This has the result that a pressure exerted on the edge of the grinding plate while working leads to twisting of the toothed ring arranged thereon due to the elasticity of the grinding plate and thus to interference with the eccentric gear.
- the gearbox with six sprockets is relatively complex.
- the eccentric grinder according to the invention with the characterizing features of the main claim has the advantage that the grinding plate has no gear parts and is only rotatably connected to the next component in its central part. This enables the use of elastic plastic for the grinding plate without deformation of the plate propagating into the gear. In addition, a reduction in the cost of the transmission is achieved because two sprockets are unnecessary compared to the prior art.
- Advantageous further developments and improvements of the eccentric grinder specified in the main claim are possible through the measures listed in the subclaims. It is particularly advantageous that the washers according to claim 5 reach up to the eccentric shaft and have a heat-conducting connection therewith. As a result, the heat generated in the bearings of the eccentric shaft can be dissipated into the washer and released by the latter to the ventilation flow passing through the ventilation openings. The ventilation openings also make it easier to remove the washer by hand.
- the arrangement of the ventilation openings on the sanding plate according to claim 10 enables the use of both the commercially available six-hole sanding papers and those with eight holes.
- FIG. 1 shows a cross section through the eccentric grinder
- FIG. 2 shows a perspective view of the fan wheel and one of the Intermediate discs
- Figure 3 shows the arrangement of the ventilation openings on the grinding plate.
- An eccentric grinder 1 has a motor housing 2 and a grip shell 3, which is arranged above a gear housing 4 for an angular gear with an output shaft 5.
- a fan housing 6 is attached, which has an exhaust port 7.
- a fan wheel 8 which is firmly connected to the output shaft 5.
- An eccentric shaft 9 with the eccentricity X to the axis of the drive shaft 4 is inserted in the fan wheel 8 from below and is supported by means of the bearings 10 and 11.
- the eccentric shaft 9 has a collar 12 and a square end section 13 with an internal thread for a fastening screw 14.
- the intermediate disk 17 is slipped onto the end section 12.
- the intermediate disc 17 is preferably made of aluminum, which is provided with a hard, wear-resistant surface by anodizing.
- the washer 17 has a raised ring 19 on both sides, which rests on the collar 12 of the eccentric shaft 9 for centering. Radially outside the ring 19, the washer 17 has ventilation openings 20.
- the intermediate disk 17 carries on each side a friction or toothed ring 21, 22 of preferably different diameters.
- the ring gears 21, 22 can be made of aluminum, the base material of the intermediate disk 17, or of plastic. With its raised central region 23, a grinding plate 24 bears against the intermediate disk 17. It is also attached to the end section 13 with a central square opening 25.
- the grinding plate 24 carries a projecting collar 26 pointing toward the intermediate disc 17.
- An elastic pad 27 is placed on the grinding plate 24.
- the grinding plate 24 and the on Läge 27 have ventilation openings 28, 29.
- the ventilation openings 20 and 28 and 29 are arranged so that they lie congruently one above the other when the intermediate disc 17 and the grinding plate 24 are plugged onto the square section 13.
- An abrasive paper 30 is fastened to the support 27, for example by means of a Velcro fastener.
- a toothed disc 31 is fastened to the fixed fan housing 6 by means of three screws 32. To prevent rotation and for centering, the toothed disk 31 has pins 33 which engage in corresponding recesses in the fan housing 5. Instead of using screws 32, the toothed disk can also be fastened to the fan housing 6 by means of snap locks.
- the toothed disk 31 On the side facing the intermediate disk 17, the toothed disk 31 carries two friction or toothed rings 34, 35 of different diameters, which can be brought into engagement with the toothed rings 21, 22 on the intermediate disk 17.
- the sprockets 34, 35 are either made of plastic or in a wear-resistant metal, so that each with the sprockets 21, 22 results in a pair of metal and plastic, in which wear can only occur on the easily replaceable plastic teeth.
- FIG. 2 shows a second intermediate plate 37 which has rings 38, 39 on the circumference which correspond to the toothed rings 34, 35 on the intermediate plate 17, but are toothless.
- the intermediate disk 37 like the intermediate disk 17, has a raised ring 40 on both sides and a central square opening 41.
- the ventilation openings 42 correspond to the through breaks 20.
- the intermediate disk 37 On one of its two sides, the intermediate disk 37 carries webs 43 which extend radially outward from the ring 40 and which can be inserted in a form-fitting manner in recesses 44 on the fan wheel 8. This creates a rotationally fixed connection between the fan wheel 8 and the intermediate disk 37.
- the webs 43 are missing on the rear side, not shown, so that the intermediate disk 37, when it faces the rear of the fan wheel 8, can rotate freely without contact with it, as is also the case with the intermediate disk 17 (see FIG. 1).
- the arrangement of the ventilation openings 28 in the grinding plate 24 is shown in FIG. Six of the openings are arranged in a circular symmetry on a diameter 46 of approximately 80 mm and approximately eight openings 47 on a diameter of approximately 65 mm.
- the fan wheel 8 fulfills several functions. In addition to generating the eccentric movement and compensating for imbalances, it generates a suction air flow that also serves to cool the bearings and the gears. Grinding dust-laden air is sucked in through the ventilation openings 29 and 28 in the grinding plate and 20 in the intermediate disc and is released again via the exhaust air connector 7. At the same time, the intermediate disk 17 or 37 is cooled by the ventilation flow, to which the heat generated in the bearings 10 and 11 is released via the eccentric shaft 12.
- the invention is not limited to the exemplary embodiment shown. Instead of the two reversible intermediate discs 17 and 37, four individual discs can also be used, each of which can be firmly connected to its own grinding plate in the central area. This would also result in a flatter design for the grinder.
- the four grinding movements can also be generated by means of a single washer, which carries the two differently sized sprockets on the same side and whose webs that can be inserted into the fan wheel can be detached, folded back or switched from the outside during the fine, medium-sized and rough grinding movement.
- they would be non-rotatably connected to the housing Sprockets axially displaceable so that either one, the other or neither of the two come into engagement with the sprockets of the washer. This has the advantage that the different grinding movements can be adjusted from the outside without removing the grinding plate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3809930A DE3809930A1 (de) | 1988-03-24 | 1988-03-24 | Exzenterschleifer |
DE3809930 | 1988-03-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0406247A1 true EP0406247A1 (de) | 1991-01-09 |
EP0406247B1 EP0406247B1 (de) | 1992-12-02 |
Family
ID=6350574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89901938A Expired - Lifetime EP0406247B1 (de) | 1988-03-24 | 1989-02-02 | Exzenterschleifer |
Country Status (4)
Country | Link |
---|---|
US (2) | US5170588A (de) |
EP (1) | EP0406247B1 (de) |
DE (2) | DE3809930A1 (de) |
WO (1) | WO1989009114A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5458533A (en) * | 1992-10-07 | 1995-10-17 | Robert Bosch Gmbh | Eccentric disk sander |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9003410U1 (de) * | 1990-03-23 | 1990-06-28 | Nied, Hans Rainer, 8760 Miltenberg | Handschleifmaschine |
US5081794A (en) | 1990-08-17 | 1992-01-21 | Haney Donald E | Sander with orbiting platen and abrasive |
GB9123502D0 (en) * | 1991-11-06 | 1992-01-02 | Black & Decker Inc | Sanding apparatus |
JP3063872B2 (ja) * | 1992-06-08 | 2000-07-12 | 株式会社マキタ | 研磨機 |
DE4233727A1 (de) * | 1992-10-07 | 1994-04-14 | Bosch Gmbh Robert | Exzentertellerschleifer |
US5319888A (en) * | 1992-11-13 | 1994-06-14 | Dynabrade, Inc. | Random orbital sander |
US5392568A (en) * | 1993-12-22 | 1995-02-28 | Black & Decker Inc. | Random orbit sander having braking member |
US5580302A (en) * | 1994-02-28 | 1996-12-03 | Black & Decker Inc. | Random orbit sander having air directing baffle |
GB9423848D0 (en) * | 1994-11-25 | 1995-01-11 | Black & Decker Inc | Improved oscillating hand tool |
DE19608969A1 (de) * | 1996-03-08 | 1997-09-11 | Bosch Gmbh Robert | Elektrische Handschleifmaschine |
CA2220776A1 (en) * | 1996-11-13 | 1998-05-13 | Allen Sommers | Eccentric grinder loading system |
US5851141A (en) * | 1996-12-09 | 1998-12-22 | Elmore; Ronald W. | Elongated orbital power sander |
US5879228A (en) * | 1997-11-14 | 1999-03-09 | Sun; Yung-Yung | Pneumatic grinding/polishing machine |
US6007414A (en) * | 1998-05-13 | 1999-12-28 | Tsai; James | Polishing machine |
US6213851B1 (en) | 1998-07-07 | 2001-04-10 | Delta International Machinery Corp. | Abrading apparatus |
DE19945060B4 (de) * | 1999-09-20 | 2010-12-02 | Robert Bosch Gmbh | Schleifhandwerkzeugmaschine |
DE19952108B4 (de) * | 1999-10-29 | 2007-09-20 | Robert Bosch Gmbh | Exzentertellerschleifmaschine |
DE20023967U1 (de) * | 2000-03-14 | 2008-02-28 | Robert Bosch Gmbh | Elektrohandschleifmaschine, insbesondere Exzenterschleifer |
US6343982B1 (en) * | 2000-08-15 | 2002-02-05 | Yung Yung Sun | Pneumatic sander structure |
DE10047202A1 (de) * | 2000-09-23 | 2002-04-11 | Bosch Gmbh Robert | Motorgetriebene Handschleifmaschine |
DE10134308A1 (de) * | 2001-07-14 | 2003-01-30 | Bosch Gmbh Robert | Handwerkzeugmaschine |
US6758731B2 (en) * | 2001-08-10 | 2004-07-06 | One World Technologies Limited | Orbital sander |
US6743086B2 (en) * | 2001-08-10 | 2004-06-01 | 3M Innovative Properties Company | Abrasive article with universal hole pattern |
AU2003298893A1 (en) * | 2002-12-03 | 2004-06-23 | S. C. Johnson & Son, Inc. | Powered cleaner/polisher |
US7565712B2 (en) * | 2003-11-26 | 2009-07-28 | S.C. Johnson & Son, Inc. | Powered cleaner/polisher |
DE102004055271A1 (de) * | 2004-11-17 | 2006-05-18 | Robert Bosch Gmbh | Exzentervorrichtung |
US8087977B2 (en) * | 2005-05-13 | 2012-01-03 | Black & Decker Inc. | Angle grinder |
US7625265B2 (en) | 2007-01-12 | 2009-12-01 | I.T., Inc. | Hood plates for handheld grinding tools |
DE102010027205A1 (de) * | 2010-07-06 | 2012-01-12 | C. & E. Fein Gmbh | Handwerkzeug |
US10099343B2 (en) | 2010-11-15 | 2018-10-16 | 3M Innovative Properties Company | Abrasive disc with universal hole pattern |
CN102229108B (zh) * | 2011-06-29 | 2013-02-27 | 郑爱军 | 金刚石无尘泵水磨头 |
DE102012214382A1 (de) * | 2012-08-13 | 2014-05-22 | Robert Bosch Gmbh | Wechselbares Schleifmittel für ein Schleifgerät mit Absaugvorrichtung |
DE102014109904A1 (de) * | 2014-07-15 | 2016-01-21 | C. & E. Fein Gmbh | Exzenterschleifer |
US20160184963A1 (en) * | 2014-12-16 | 2016-06-30 | Dustless Depot, Llc | Dust shroud with internal impeller and adjustable mounting mechanism |
DE102017108426A1 (de) * | 2017-04-20 | 2018-10-25 | Ferrobotics Compliant Robot Technology Gmbh | Schleifmaschine zum robotergestützten Schleifen |
US10818450B2 (en) | 2017-06-14 | 2020-10-27 | Black & Decker Inc. | Paddle switch |
CN108527124A (zh) * | 2018-03-30 | 2018-09-14 | 陈长胜 | 一种新型的医疗器械加工设备 |
US11123839B2 (en) | 2018-10-23 | 2021-09-21 | Dustless Depot Llc | Grinder dust shroud with input shaft gasket and adjustable mounting mechanism |
USD908149S1 (en) | 2018-10-23 | 2021-01-19 | Dustless Depot Llc | Angle grinder dust shroud with variable position slots for mounting brackets |
US11273505B2 (en) | 2019-03-27 | 2022-03-15 | Dustless Depot, Llc | Circular saw dust collection shroud |
DE102020215737A1 (de) * | 2020-12-11 | 2022-06-15 | Flex-Elektrowerkzeuge Gmbh | Werkzeugmaschine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4467565A (en) * | 1982-08-02 | 1984-08-28 | Chicago Pneumatic Tool Company | Rotary and orbital sander |
DE3602571C2 (de) * | 1986-01-29 | 1998-09-24 | Bosch Gmbh Robert | Exzentertellerschleifer mit einer Vorrichtung zum Verändern der Schleifbewegung |
DE3609441A1 (de) * | 1986-03-20 | 1987-09-24 | Bosch Gmbh Robert | Exzenterschleifer mit einer vorrichtung zum veraendern der schleifbewegung |
DE3625671C1 (en) * | 1986-07-29 | 1988-01-07 | Festo Kg | Eccentric plate grinder |
DE3625655C1 (de) * | 1986-07-29 | 1988-01-07 | Festo Kg | Exzentertellerschleifer |
-
1988
- 1988-03-24 DE DE3809930A patent/DE3809930A1/de not_active Withdrawn
-
1989
- 1989-02-02 EP EP89901938A patent/EP0406247B1/de not_active Expired - Lifetime
- 1989-02-02 DE DE8989901938T patent/DE58902911D1/de not_active Expired - Fee Related
- 1989-02-02 US US07/566,378 patent/US5170588A/en not_active Expired - Fee Related
- 1989-02-02 WO PCT/DE1989/000064 patent/WO1989009114A1/de active IP Right Grant
-
1992
- 1992-05-18 US US07/885,171 patent/US5453040A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO8909114A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5458533A (en) * | 1992-10-07 | 1995-10-17 | Robert Bosch Gmbh | Eccentric disk sander |
Also Published As
Publication number | Publication date |
---|---|
EP0406247B1 (de) | 1992-12-02 |
US5453040A (en) | 1995-09-26 |
DE3809930A1 (de) | 1989-10-05 |
WO1989009114A1 (en) | 1989-10-05 |
US5170588A (en) | 1992-12-15 |
DE58902911D1 (de) | 1993-01-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0406247A1 (de) | Exzenterschleifer. | |
DE3906549C2 (de) | ||
DE69412050T2 (de) | Exzenterschleifmaschine mit Bremskörper | |
DE69608251T2 (de) | Antriebsvorrichtung mit drehschwingungsdämfern | |
EP1741515B1 (de) | Werkzeug | |
EP1586417A2 (de) | Schleifteller mit Eigenabsaugeinrichtung und Verfahren zum Entfernen von Schleifpartikeln | |
DE3620136A1 (de) | Handschleifmaschine mit einer vorrichtung zum absaugen | |
EP0591876A1 (de) | Exzentertellerschleifer mit Schleiftellerbremse | |
DE102006011663A1 (de) | Angetriebenes Werkzeug mit Staubsammelfunktion | |
DE10361810A1 (de) | Handwerkzeugmaschine mit Spanneinrichtung | |
DE19512991C2 (de) | Vorrichtung zum Befestigen eines Werkzeugs an einer Spindel eines Drehwerkzeuges | |
DE20312499U1 (de) | Schleifteller für Schleifmaschine | |
DE2138022C3 (de) | Zentrifugalventilator | |
DE202007004949U1 (de) | Schleifsystem | |
DE69800732T2 (de) | Vorrichtung zur Ausgabe von scheibenförmigen Gegenständen | |
DE10360252A1 (de) | Werkzeugadapter | |
DE112019003340T5 (de) | Abdeckung und werkzeug | |
EP0087057B1 (de) | Drehstromgenerator mit kraftschlüssig gekuppeltem Lüfterrad | |
DE3630257A1 (de) | Stuetzscheibe fuer die rotorwelle einer oe-spinnmaschine | |
DE60117316T2 (de) | Vorrichtung zum Schleifen und Schmirgeln von Oberflächen | |
DE102006054267A1 (de) | Handwerkzeugmaschine mit bürstenlosem Motor | |
DE2265379C2 (de) | Luftdrehfilter | |
DE2944833C2 (de) | Vorrichtung zur lösbaren Befestigung eines Stirnschleifringes | |
DE4206962A1 (de) | Exzentertellerschleifer mit begrenzter drehzahl des schleiftellers | |
DE69108096T2 (de) | Riemenscheibe. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19900825 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
17Q | First examination report despatched |
Effective date: 19911015 |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19921211 |
|
REF | Corresponds to: |
Ref document number: 58902911 Country of ref document: DE Date of ref document: 19930114 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030127 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20030221 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20030325 Year of fee payment: 15 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040901 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20040202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041029 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050202 |