EP0820838A1 - Ponçeuse à plateau excentrique - Google Patents

Ponçeuse à plateau excentrique Download PDF

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Publication number
EP0820838A1
EP0820838A1 EP97112604A EP97112604A EP0820838A1 EP 0820838 A1 EP0820838 A1 EP 0820838A1 EP 97112604 A EP97112604 A EP 97112604A EP 97112604 A EP97112604 A EP 97112604A EP 0820838 A1 EP0820838 A1 EP 0820838A1
Authority
EP
European Patent Office
Prior art keywords
eccentric
fan wheel
eccentric sleeve
bore
tool
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
Application number
EP97112604A
Other languages
German (de)
English (en)
Other versions
EP0820838B1 (fr
Inventor
Jürgen Dipl.-Ing. Blickle
Walter Penka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP0820838A1 publication Critical patent/EP0820838A1/fr
Application granted granted Critical
Publication of EP0820838B1 publication Critical patent/EP0820838B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a grinder with a with eccentric stroke driven tool in the generic term of claim 1 closer designated Art.
  • Such a grinder is known from DE 35 17 766 C2.
  • the motor shaft is at the tool end Hollow shaft executed and has an eccentric bore in which an eccentric pin engages.
  • This eccentric pin in turn carries one at its tool end Drive eccentric for the grinding tool, which is relative to the eccentric bore of the motor shaft can be turned.
  • the minimum results when the motor runs clockwise Eccentricity and the maximum when the motor runs counterclockwise Eccentricity for the eccentric stroke of the grinding tool is decisive.
  • the grinding tool of the well-known Grinder is connected to the machine housing via elastic intermediate links connected to a rotation of the grinding tool to prevent its drive eccentric.
  • the well-known Machine requires a considerable height. So is the motor shaft with the eccentric bore at the end still necessary for the dust extraction Fan wheel passed coaxially, this fan wheel is not included in the tool eccentric drive.
  • the invention has for its object a grinder with adjustable eccentric stroke according to the generic type Way of creating a more compact nesting of the eccentric members which can be rotated relative to one another the overall height is reduced.
  • the grinder shown in FIG. 1 has a housing 1 on, in which an electric motor is arranged upwards from which the lower end of the armature 2 can be seen.
  • the pot-like down Opening fan wheel 4 has an eccentric bore 5, in an eccentric sleeve 6 is arranged.
  • the eccentric sleeve 6 is concentric with the outer circumference in the eccentric Bore 5 of the fan wheel 4 fitted and opposite the fan wheel 4 in a special manner, whereupon will be discussed in more detail below.
  • the eccentric sleeve 6 has an eccentric bore opening downwards 7, in which a driver 10 engages coaxially a bearing 8 on the wall of the eccentric bore 7 supports, which is firmly connected to the driver 10 Pin 10a sits.
  • the driver carries a tool 11, with which it is fixed by means of a screw 9, but detachable is connected, with which the tool 11 are replaced can.
  • the tool 11 preferably has the shape of a circular grinding plate and is accordingly on his lower working side with an abrasive such as a Sandpaper 12, coated.
  • the tool 11 is not supported from the machine housing 1 but is over the driver 10 rotatable in the eccentric sleeve 6 by means of the bearing 8 added, however, a rotation of the grinding tool 11 is only possible in one direction of rotation.
  • the grinder is equipped with a dust extractor and so the grinding tool 11 has dust suction openings 13 that continue through the abrasive 12.
  • the dust suction openings 13 open at the top a housing interior 14 in which the fan wheel 4 turns.
  • the fan wheel 4 is also part of the dust extraction here and conveys the suctioned dust through a channel 15 in the housing 1 in a connected dust bag.
  • the fan wheel 4 with its eccentric bore 5 and Eccentric sleeve 6 with its driver 10 on tool 11 eccentrically receiving eccentric bore 7 put two against each other rotatable eccentric members represent their eccentricity add or subtract depending on the rotary position can.
  • the rotation takes place the eccentric sleeve 6 with respect to the fan wheel 4 via the Tool 11, and this is the bearing 8 between the driver 10 and the eccentric sleeve 6 with an integrated one-way clutch equipped, which - as mentioned - a free Rotation of the tool 11 relative to the eccentric sleeve 6 only allowed in one of the two directions of rotation, while in the opposite direction of rotation with twisting the tool 11 taken over the bearing 8, the eccentric sleeve 6 becomes. So that the eccentric sleeve 6 compared to the Fan wheel 4 adjusted to the resulting eccentricity The fan wheel 4 be stopped from the outside.
  • locking button 16 that can be pushed in against the pressure of a spring, whereby an inner portion 17 of the locking button 16 between the wings 18 of the fan wheel 4 engages, which thus by a stop on the inner section 17 of the locking button 16 is secured against twisting.
  • the locking device 19 comprises a spring-loaded locking member 22, which in the eccentric sleeve 6 is embedded axially parallel and in corresponding recesses of the fan wheel 4 engages.
  • FIG. 2 basically has the same structure as the grinder of FIG. 1, which is why the same reference numbers are used here for the same parts are.
  • Only the locking device 19 and the one-way clutch between the tool 11 and the eccentric sleeve 6 are designed differently here. So are the fan 4 and the eccentric sleeve 6 at its bottom, towards the tool 11 lying open side covered by an washer 20, for which purpose the eccentric sleeve 6 with the fan wheel 4 is flush at the bottom.
  • the washer 20 is firmly connected to the air wheel 4 by means of screws 28.
  • the locking recesses 21 of the locking device 19 are in the Integrated inside the washer 20, accordingly is the locking member 22 of the locking device 19 in the eccentric sleeve 6 of the washer 20 opposite.
  • the one-way clutch 23 is supported in a Bore 24 from, which is also eccentric to the outer circumference the eccentric sleeve 6 attached in the upper end wall 26 thereof is.
  • the rotation of the eccentric sleeve 6 with respect to the fan wheel 4 takes place here in the same way as in the exemplary embodiment according to Fig. 1.
  • the eccentric sleeve 6 is twisted compared to the fan 4 in the embodiment according to Fig. 3.
  • the eccentric sleeve 6 has an upper approach, which carries an external toothing 29.
  • Another gear is in engagement with the gear 28 30, which has an axial extension downwards with a Has actuator 27, which has an interior for one Has adjusting key.
  • This key can with appropriate Alignment of the rotatable tool 11 by a of the suction openings 13 are introduced into the actuator 27 be, after which by turning the actuator 27th the eccentric sleeve 6 can be rotated via the gear 28 - 30 can, with a separate fixation of the fan wheel 4 superfluous, since the entire transmission 28-30 in the Fan wheel 4 is arranged.
  • Locking device 19 also present and in the same way as in the embodiment of the grinder according to FIG. 2 educated.
  • a second fan 31 which for the ventilation, so the Cooling of the drive motor is provided.
  • Fan wheel 4 instead the fan wheel 31 analog be trained so that it in the manner described can be nested with the eccentric sleeve 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP97112604A 1996-07-25 1997-07-23 Ponçeuse à plateau excentrique Expired - Lifetime EP0820838B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19629989 1996-07-25
DE19629989A DE19629989C2 (de) 1996-07-25 1996-07-25 Schleifer mit einem mittels eines Antriebmotors mit Exzenterhub angetriebenen Werkzeug

Publications (2)

Publication Number Publication Date
EP0820838A1 true EP0820838A1 (fr) 1998-01-28
EP0820838B1 EP0820838B1 (fr) 2000-08-16

Family

ID=7800780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97112604A Expired - Lifetime EP0820838B1 (fr) 1996-07-25 1997-07-23 Ponçeuse à plateau excentrique

Country Status (2)

Country Link
EP (1) EP0820838B1 (fr)
DE (2) DE19629989C2 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000029170A1 (fr) * 1998-11-12 2000-05-25 Robert Bosch Gmbh Ponceuse a main entrainee par moteur
WO2002068151A1 (fr) * 2001-02-27 2002-09-06 E.I. Dupont De Nemours And Company Tete a orbite aleatoire dotee d'une caracteristique de detection vers le haut
EP1688217A2 (fr) * 2005-02-04 2006-08-09 Positec Power Tools (Suzhou) Co., Ltd. Dispositif de réglage de la course d'un excentrique pour un outil motorisé
EP1729023A2 (fr) 2005-06-03 2006-12-06 Positec Power Tools (Suzhou) Co., Ltd. Mécanisme d'embrayage
US7721861B2 (en) 2005-02-04 2010-05-25 Positec Power Tools (Suzhou) Co., Ltd. Clutch mechanism for use in power tools
EP3162499A3 (fr) * 2015-11-02 2017-05-10 Lake Country Manufacturing, Inc. Mécanisme de course réglable pour machine orbitale aléatoire
WO2017097701A1 (fr) * 2015-12-08 2017-06-15 Festool Gmbh Machine-outil à main
US10518384B2 (en) 2015-11-02 2019-12-31 Lake Country Tool, Llc Adjustable stroke mechanism for random orbital machine
WO2022105833A1 (fr) * 2020-11-18 2022-05-27 Milwaukee Electric Tool Corporation Ponceuse orbitale
US11493115B2 (en) 2017-10-30 2022-11-08 Lake Country Tool, Llc Adjustable stroke device with cam
US11592055B2 (en) 2018-08-30 2023-02-28 Lake Country Tool, Llc Adjustable stroke device with cam
US11878391B2 (en) 2022-03-04 2024-01-23 Lake Country Tool, Llc Adjustable stroke device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013114469A1 (de) * 2013-12-19 2015-06-25 Flex-Elektrowerkzeuge Gmbh Handgehaltene Schleifmaschine

Citations (7)

* Cited by examiner, † Cited by third party
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
US3364625A (en) * 1965-10-21 1968-01-23 Albertson & Co Inc Drive for surface-finishing tool
DE3517766A1 (de) * 1984-09-08 1986-03-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schwingschleifer
DE3620136A1 (de) * 1986-06-14 1987-12-17 Bosch Gmbh Robert Handschleifmaschine mit einer vorrichtung zum absaugen
JPS63156652A (ja) * 1986-12-17 1988-06-29 Yasuhara Kk 加工装置
EP0558885A2 (fr) * 1992-01-31 1993-09-08 Robert Bosch Gmbh Machine-outil portative, en particulier scie circulaire portative à main
EP0691180A2 (fr) * 1994-07-08 1996-01-10 Metabowerke GmbH & Co. Système d'arrêt pour mandrin d'une machine à main

Patent Citations (7)

* Cited by examiner, † Cited by third party
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
US3364625A (en) * 1965-10-21 1968-01-23 Albertson & Co Inc Drive for surface-finishing tool
DE3517766A1 (de) * 1984-09-08 1986-03-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schwingschleifer
DE3620136A1 (de) * 1986-06-14 1987-12-17 Bosch Gmbh Robert Handschleifmaschine mit einer vorrichtung zum absaugen
JPS63156652A (ja) * 1986-12-17 1988-06-29 Yasuhara Kk 加工装置
EP0558885A2 (fr) * 1992-01-31 1993-09-08 Robert Bosch Gmbh Machine-outil portative, en particulier scie circulaire portative à main
EP0691180A2 (fr) * 1994-07-08 1996-01-10 Metabowerke GmbH & Co. Système d'arrêt pour mandrin d'une machine à main

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 419 (M - 760) 8 November 1988 (1988-11-08) *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000029170A1 (fr) * 1998-11-12 2000-05-25 Robert Bosch Gmbh Ponceuse a main entrainee par moteur
WO2002068151A1 (fr) * 2001-02-27 2002-09-06 E.I. Dupont De Nemours And Company Tete a orbite aleatoire dotee d'une caracteristique de detection vers le haut
US7530881B2 (en) 2005-02-04 2009-05-12 Positec Power Tools (Suzhou) Co., Ltd. Eccentric stroke adjusting mechanism
EP1688217A2 (fr) * 2005-02-04 2006-08-09 Positec Power Tools (Suzhou) Co., Ltd. Dispositif de réglage de la course d'un excentrique pour un outil motorisé
EP1688217A3 (fr) * 2005-02-04 2006-08-23 Positec Power Tools (Suzhou) Co., Ltd. Dispositif de réglage de la course d'un excentrique pour un outil motorisé
CN100453271C (zh) * 2005-02-04 2009-01-21 苏州宝时得电动工具有限公司 偏心距调节机构
US7721861B2 (en) 2005-02-04 2010-05-25 Positec Power Tools (Suzhou) Co., Ltd. Clutch mechanism for use in power tools
EP1729023A3 (fr) * 2005-06-03 2009-03-18 Positec Power Tools (Suzhou) Co., Ltd. Mécanisme d'embrayage
EP1729023A2 (fr) 2005-06-03 2006-12-06 Positec Power Tools (Suzhou) Co., Ltd. Mécanisme d'embrayage
US10518384B2 (en) 2015-11-02 2019-12-31 Lake Country Tool, Llc Adjustable stroke mechanism for random orbital machine
EP3162499A3 (fr) * 2015-11-02 2017-05-10 Lake Country Manufacturing, Inc. Mécanisme de course réglable pour machine orbitale aléatoire
US10981258B2 (en) 2015-11-02 2021-04-20 Lake Country Tool, Llc Adjustable stroke mechanism for random orbital machine
US10144106B2 (en) 2015-11-02 2018-12-04 Lake Country Manufacturing, Inc. Adjustable stroke mechanism for random orbital machine
WO2017097701A1 (fr) * 2015-12-08 2017-06-15 Festool Gmbh Machine-outil à main
CN108290265A (zh) * 2015-12-08 2018-07-17 费斯托工具有限责任公司 手持式工具机
EP4292760A3 (fr) * 2015-12-08 2024-02-21 Festool GmbH Machine-outil à main
US11493115B2 (en) 2017-10-30 2022-11-08 Lake Country Tool, Llc Adjustable stroke device with cam
US11674571B2 (en) 2017-10-30 2023-06-13 Lake Country Tool, Llc Adjustable stroke device with cam
US11927250B2 (en) 2017-10-30 2024-03-12 Lake Country Tool, Llc Adjustable stroke device with cam
US11592055B2 (en) 2018-08-30 2023-02-28 Lake Country Tool, Llc Adjustable stroke device with cam
WO2022105833A1 (fr) * 2020-11-18 2022-05-27 Milwaukee Electric Tool Corporation Ponceuse orbitale
US11878391B2 (en) 2022-03-04 2024-01-23 Lake Country Tool, Llc Adjustable stroke device

Also Published As

Publication number Publication date
DE19629989C2 (de) 1999-01-28
DE19629989A1 (de) 1998-02-05
DE59702189D1 (de) 2000-09-21
EP0820838B1 (fr) 2000-08-16

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