EP0461112A1 - Exzenterschleifer. - Google Patents
Exzenterschleifer.Info
- Publication number
- EP0461112A1 EP0461112A1 EP19890912898 EP89912898A EP0461112A1 EP 0461112 A1 EP0461112 A1 EP 0461112A1 EP 19890912898 EP19890912898 EP 19890912898 EP 89912898 A EP89912898 A EP 89912898A EP 0461112 A1 EP0461112 A1 EP 0461112A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- eccentric
- grinding plate
- roller
- rolling
- 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 29
- 102000015933 Rim-like Human genes 0.000 claims description 2
- 108050004199 Rim-like Proteins 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007789 sealing Methods 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
- B24B23/02—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 grinder according to the preamble of claim 1.
- Such an eccentric grinder is known from DE PS 36 25 655.
- This fuse is designed in the form of a friction brake.
- This requires a significant number of individual parts and high assembly costs.
- the friction brake is prone to failure and sensitive to dust. Therefore, a high level of sealing technology must be carried out.
- the reliability of the brake decreases with increasing wear of its individual parts, such as springs and brake linings. A considerable effort is required for their repair.
- the known eccentric grinder In hard, professional use, the known eccentric grinder has the following further disadvantages:
- the teeth of the rolling rings are subject to high wear as a result of grinding dust.
- the switchable gear for the additional processing step / which generates a medium roughness requires complicated adjusting means. These are prone to failure and not very robust. If the gear stages are not switched carefully, there is a risk of tooth breakage for the teeth of the gear rings.
- the eccentric grinder according to the invention with the characterizing features of the main claim has the advantage over the fine grinding operating mode, however, of high grinding performance with a simple, space-saving construction.
- the rolling rings are extremely resistant to mechanical wear and the service life of the gears is significantly increased. The damaging turning up of the sanding plate when idling is prevented in a particularly simple manner.
- Coarse and medium grinding modes which are known per se and which are implemented in a simple, gentle manner by changing the different rolling rings carried by the grinding plate.
- FIG. 1 shows a sectional illustration of an eccentric grinder
- FIG. 2 shows a grinding plate with a roller ring with a ring-like friction lining
- FIG. 3 shows a grinding plate with a rolling ring with bristle-coated friction lining
- FIG. 4 shows a grinding plate with a toothed ring consisting of a toothed belt with a rim-like carrier collar.
- the eccentric grinder 1 shown in FIG. 1 has an eccentric gear housing 2 for a grinding plate drive and a drive housing 3.
- the eccentric gear housing 2 is provided with a socket 4 for connecting a suction device 5 and flanged to the drive housing 3 by means of screws 6.
- a drive shaft 7 protrudes from the drive housing 3.
- the intermediate piece 8 is designed as a crank and has a cylindrical recess 9 mounted eccentrically to the drive shaft 7.
- the eccentricity, ie the distance between the axis of the drive shaft 7 and the axis of the recess 9, is denoted by e.
- two ball bearings 10 are inserted, which receive a support pin 11 for a grinding plate 12.
- the support pin 11 has a hexagon piece 13 and at its free end a threaded bore into which an Allen screw 14 can be screwed.
- the hexagon piece 13 and a securing washer 15 secure the support pin 11 against axial displacement in the ball bearings 10.
- the support plate 11 is connected to the support plate 12 by means of the hexagon socket screw 14.
- This carries a covering 16, for example with a Velcro fastener, which serves to receive a correspondingly designed sanding sheet 17.
- a rolling ring 18 designed as an internal ring gear is arranged non-rotatably, concentrically with the drive shaft 7.
- the grinding plate 12 On its end face facing the housing 2, the grinding plate 12 releasably and non-rotatably carries a rolling ring 20 designed as an external friction ring, which is oriented concentrically to the axis of the supporting pin 11 and thus eccentrically to the drive shaft 7.
- a non-positive connection for transmitting a rotary movement.
- the eccentric grinder works as follows: A motor, not shown, drives the drive shaft 7. This rotates the intermediate piece 8 and allows the support pin 11 held therein eccentrically and with it the grinding plate 12 to revolve around the axis of the drive shaft 7. Due to the freely rotatable mounting of the trunnion 11 in the ball bearings 10, the grinding plate 12 fastened thereon can also be freely rotated.
- the grinding plate 12 arranged on the support pin 11 When the grinder 12 is lifted off a surface to be machined, it rolls with minimal slip with its roller ring 20 in the roller ring 18 arranged in a rotationally fixed manner on the eccentric gear housing 2 and forces an additional rotational movement of the grinding plate 12.
- FIG. 2 shows a roller ring 20 of the grinding plate 12 in cooperation with the roller ring 18.
- the rolling ring 20 is provided with an elastic, ring-like friction lining 21 with knobs 22.
- FIG. 3 shows the rolling ring 40 with an elastic friction lining 41, equipped with bristles 42, which bring about increased frictional engagement with the rolling ring 38 fixed to the housing, which, however, is limited by the elastic bending of the bristles 42 and subsequent latching.
- the roller ring 20, 40 is dimensioned such that even when the grinding plate 12 is pressed lightly onto a surface to be machined, for example with the weight of the eccentric grinder 1, no forced ones Rolling movement of the rolling ring 20, 40 can take place on the rolling ring 18, 38, but that together with the rolling ring 20, 40 the grinding plate 12 rotates eccentrically without rotating.
- the friction between the rolling ring 20, 40 and the housing-fixed rolling ring 18, 38 around the grinding plate 12 is sufficient for rotation in a transmission ratio of here about 1:60 in relation to the drive shaft 7 to force.
- the roller ring 50 is a toothed part 51.
- This is formed from an annular toothed belt 52.
- This sits on a rim-shaped carrier collar 53 with at least part of its width.
- the carrier collar 53 supports the inherently flexible, pliable, ring-like toothed belt 52 / which can thereby act as a fixed friction wheel, the teeth 54 of which frictionally contact the rolling ring 48 without meshing teeth.
- Even an additional use of both the toothing sides and the toothed belt back of the toothed belt 52 as a friction ring on a non-toothed counter surface has proven to be advantageous.
- a rough grinding step can be implemented using a grinding plate (not shown) with an internal ring gear that meshes with an additional / not shown housing-fixed external ring gear.
- a machining step middle grinding can be realized in a known manner.
- a change between coarse, medium and fine sanding is possible by changing the sanding plate with the corresponding rolling rings.
- the invention can advantageously be used for the finishing step.
- the rolling ring 20, 40/50 is part of a turning wheel, so that e.g. a toothed belt is arranged on one side and a friction ring in the form of an elastic ring is arranged on the other side.
- Gearboxes according to the invention are of suitable design, e.g. by positive power transmission, also for the transmission of higher torques, i.e. suitable for forced rotation of the sanding pad under high pressure on the surfaces to be worked.
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)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3906549A DE3906549A1 (de) | 1989-03-02 | 1989-03-02 | Exzenterschleifer |
DE3906549 | 1989-03-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0461112A1 true EP0461112A1 (de) | 1991-12-18 |
EP0461112B1 EP0461112B1 (de) | 1993-02-10 |
Family
ID=6375280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89912898A Expired - Lifetime EP0461112B1 (de) | 1989-03-02 | 1989-11-17 | Exzenterschleifer |
Country Status (6)
Country | Link |
---|---|
US (1) | US5261190A (de) |
EP (1) | EP0461112B1 (de) |
JP (1) | JPH04503775A (de) |
BR (1) | BR8907881A (de) |
DE (2) | DE3906549A1 (de) |
WO (1) | WO1990009869A1 (de) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9111520U1 (de) * | 1991-09-17 | 1993-01-28 | Werkzeug GmbH, 5441 Weibern | Exzenterschleifkopf |
GB9123502D0 (en) * | 1991-11-06 | 1992-01-02 | Black & Decker Inc | Sanding apparatus |
DE4206962A1 (de) * | 1992-03-05 | 1993-09-09 | Bosch Gmbh Robert | Exzentertellerschleifer mit begrenzter drehzahl des schleiftellers |
DE4233729A1 (de) * | 1992-10-07 | 1994-04-14 | Bosch Gmbh Robert | Exzentertellerschleifer mit Schleiftellerbremse |
DE4233727A1 (de) * | 1992-10-07 | 1994-04-14 | Bosch Gmbh Robert | Exzentertellerschleifer |
DE4233728A1 (de) * | 1992-10-07 | 1994-04-14 | Bosch Gmbh Robert | Exzentertellerschleifer |
US5518442A (en) * | 1993-01-22 | 1996-05-21 | Porter-Cable Corporation | Sander |
IT1266572B1 (it) * | 1993-07-30 | 1997-01-09 | Guido Valentini | Congegno per il montaggio e la rimozione manuali di dischi operatori in utensili manuali per la lavorazione di superfici |
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 |
GB9415011D0 (en) * | 1994-07-26 | 1994-09-14 | Black & Decker Inc | Improved oscillating hand tool |
USD378183S (en) * | 1994-09-14 | 1997-02-25 | Black & Decker Inc. | Small angle grinder |
GB9423848D0 (en) * | 1994-11-25 | 1995-01-11 | Black & Decker Inc | Improved oscillating hand tool |
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 |
JP2839080B2 (ja) * | 1996-01-31 | 1998-12-16 | ユーエイチティー株式会社 | 手持ち式研削装置 |
US5941765A (en) * | 1996-11-19 | 1999-08-24 | Porter Cable Corporation | Sander |
US5885145A (en) * | 1997-05-01 | 1999-03-23 | O'mara; John E. | Powered drywall sander and painter |
USD411089S (en) * | 1997-05-23 | 1999-06-15 | Black & Decker Inc. | Right angle sander with vacuum attachment |
US5947804A (en) * | 1998-04-27 | 1999-09-07 | Ryobi North America, Inc. | Adjustable eccentricity orbital tool |
US6062960A (en) * | 1998-04-27 | 2000-05-16 | Ryobi North America, Inc. | Orbital tool |
US6213851B1 (en) | 1998-07-07 | 2001-04-10 | Delta International Machinery Corp. | Abrading apparatus |
DE10055246A1 (de) * | 2000-11-08 | 2002-05-16 | Bosch Gmbh Robert | Exzenterschleifer mit einer Vorrichtung zur Drehzahlbegrenzung des Schleiftellers |
US6666524B2 (en) * | 2001-05-23 | 2003-12-23 | The Gillette Company | End-rounding devices and methods for end-rounding |
US7824433B2 (en) * | 2005-05-03 | 2010-11-02 | Williams Lytton A | Bone anchored surgical mesh |
DE102006061634A1 (de) | 2006-12-27 | 2008-07-03 | Robert Bosch Gmbh | Exzenterschleifer |
US8100745B2 (en) * | 2007-03-16 | 2012-01-24 | Black & Decker Inc. | Low vibration sander with a flexible top handle |
US20090111364A1 (en) * | 2007-10-29 | 2009-04-30 | Jinding Group Co., Ltd. | Power tool having an eccentric mass |
US8172642B2 (en) * | 2008-08-20 | 2012-05-08 | Black & Decker Inc. | Multi-sander |
CN101890671B (zh) * | 2009-02-17 | 2014-05-28 | C.&E.泛音有限公司 | 用于振动驱动装置的磨削或磨光的工具 |
JP2012200794A (ja) * | 2011-03-23 | 2012-10-22 | Makita Corp | 電動工具 |
DE102011052247A1 (de) * | 2011-07-28 | 2013-01-31 | Rolf Tamm | Anordnung zum Schleifen von Elektroden |
CN104589189B (zh) * | 2015-02-02 | 2017-07-14 | 浙江金美电动工具有限公司 | 双轨迹偏心结构抛光机 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3287859A (en) * | 1965-08-23 | 1966-11-29 | Treffle J Leveque | Rotatable grinding and surfacing tool |
JPS55150964A (en) * | 1979-05-04 | 1980-11-25 | Kinichi Takeuchi | Grinding device capable of performing combined motion of rotation and circular motion |
DE3609441A1 (de) * | 1986-03-20 | 1987-09-24 | Bosch Gmbh Robert | Exzenterschleifer mit einer vorrichtung zum veraendern der schleifbewegung |
DE3615799C2 (de) * | 1986-05-10 | 1994-10-13 | Bosch Gmbh Robert | Exzenterschleifer mit einer Vorrichtung zum Verändern der Schleifbewegung |
DE3625655C1 (de) * | 1986-07-29 | 1988-01-07 | Festo Kg | Exzentertellerschleifer |
DE3642741A1 (de) * | 1986-12-13 | 1988-06-23 | Bosch Gmbh Robert | Exzenterschleifer |
-
1989
- 1989-03-02 DE DE3906549A patent/DE3906549A1/de active Granted
- 1989-11-17 DE DE8989912898T patent/DE58903553D1/de not_active Expired - Fee Related
- 1989-11-17 US US07/752,440 patent/US5261190A/en not_active Expired - Fee Related
- 1989-11-17 WO PCT/DE1989/000732 patent/WO1990009869A1/de active IP Right Grant
- 1989-11-17 JP JP2500120A patent/JPH04503775A/ja active Pending
- 1989-11-17 EP EP89912898A patent/EP0461112B1/de not_active Expired - Lifetime
- 1989-11-17 BR BR898907881A patent/BR8907881A/pt not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9009869A1 * |
Also Published As
Publication number | Publication date |
---|---|
US5261190A (en) | 1993-11-16 |
JPH04503775A (ja) | 1992-07-09 |
DE58903553D1 (de) | 1993-03-25 |
BR8907881A (pt) | 1991-12-17 |
DE3906549A1 (de) | 1990-09-06 |
EP0461112B1 (de) | 1993-02-10 |
DE3906549C2 (de) | 1992-07-30 |
WO1990009869A1 (de) | 1990-09-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0461112A1 (de) | Exzenterschleifer. | |
DE3615799C2 (de) | Exzenterschleifer mit einer Vorrichtung zum Verändern der Schleifbewegung | |
DE69412050T2 (de) | Exzenterschleifmaschine mit Bremskörper | |
EP0591876B1 (de) | Exzentertellerschleifer mit Schleiftellerbremse | |
DE4021500C3 (de) | Förderaggregat, insbesondere zum Fördern von Kraftstoff | |
DE3609441A1 (de) | Exzenterschleifer mit einer vorrichtung zum veraendern der schleifbewegung | |
DE19845166B4 (de) | Rotationswerkzeug in der Ausführungsform einer Ringscheibe zur Oberflächenbearbeitung | |
EP1552904A1 (de) | Werkzeug | |
DE19617478B4 (de) | Handschleifmaschine | |
DE3873584T2 (de) | Ratschen-mechanismus. | |
DE60018998T2 (de) | Verfahren und Vorrichtung zum Polieren von Aussenzahnrädern | |
DE3602571A1 (de) | Exzenterschleifer mit einer vorrichtung zum veraendern der schleifbewegung | |
EP0460133A1 (de) | Exzenterschleifmaschine. | |
EP1645364A1 (de) | Rotationswerkzeug | |
US4583328A (en) | Apparatus for high tolerance polishing of a workpiece surface | |
EP1581365B1 (de) | Lageranordnung zur schwingf higen lagerung eines schleiftell ers an einem schleifger t | |
DE19963831A1 (de) | Exzentertellerschleifer mit einem Gehäuse | |
DE60206678T2 (de) | Trommeltypmaschine mit einer Bewegungsübertragungsvorrichtung | |
DE1777055C3 (de) | Abrichlring zur Verwendung an Zweischeiben-Läpp- und/oder Honmaschinen | |
DE1810301A1 (de) | Bandsaegemaschine | |
DE1066319B (de) | I Zahnärztliches Bohrinstrument | |
DE2212601A1 (de) | Scheiben- und ringschwingmuehle | |
EP0137792A1 (de) | Transportable einrichtung zum beidseitigen nachbearbeiten von verschlissenen bremsscheiben an kraftfahrzeugen | |
DE930583C (de) | Schleifscheibe fuer Scheibenbohner | |
DE346791C (de) | Vorrichtung zum Abrichten von Schleifscheiben |
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: 19901215 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH |
|
17Q | First examination report despatched |
Effective date: 19920521 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 58903553 Country of ref document: DE Date of ref document: 19930325 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19930226 |
|
ITF | It: translation for a ep patent filed | ||
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 | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19940207 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Effective date: 19941130 Ref country code: LI Effective date: 19941130 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
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: FR Payment date: 20021123 Year of fee payment: 14 |
|
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: 20040730 |
|
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 Effective date: 20051117 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20061123 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20070116 Year of fee payment: 18 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20071117 |
|
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: 20080603 |
|
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: 20071117 |