EP0147545A2 - Dispositif pour fixer de préférence un disque à meuler de façon démontable sur une machine portative à moteur - Google Patents

Dispositif pour fixer de préférence un disque à meuler de façon démontable sur une machine portative à moteur Download PDF

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Publication number
EP0147545A2
EP0147545A2 EP84112112A EP84112112A EP0147545A2 EP 0147545 A2 EP0147545 A2 EP 0147545A2 EP 84112112 A EP84112112 A EP 84112112A EP 84112112 A EP84112112 A EP 84112112A EP 0147545 A2 EP0147545 A2 EP 0147545A2
Authority
EP
European Patent Office
Prior art keywords
base part
closing part
bore
collar
locking
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.)
Withdrawn
Application number
EP84112112A
Other languages
German (de)
English (en)
Other versions
EP0147545A3 (fr
Inventor
E Fein Gmbh Co C
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein 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 C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Publication of EP0147545A2 publication Critical patent/EP0147545A2/fr
Publication of EP0147545A3 publication Critical patent/EP0147545A3/fr
Withdrawn legal-status Critical Current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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools

Definitions

  • the invention relates to a device for releasably attaching a disk-shaped tool, preferably a grinding wheel or the like, to the work spindle of a power-driven hand tool, in particular an angle grinder.
  • a power-driven hand tool in particular an angle grinder.
  • Each tool of a power-operated hand tool is usually subject to wear and, as a result, it must either be exchanged for a new one or removed and overhauled, for example sharpened. Of course, this also applies to grinding wheels of electrical or other driven devices, such as grinders and angle grinders.
  • the tools especially with high-revving engines, must be held securely so that they can work properly.
  • safety measures are also to be taken into account here, with which an automatic opening of the holding device for the tool is avoided.
  • the object of the invention is to provide a device of the type mentioned, with the help of which the rotating disk-shaped tool, in particular a grinding wheel, can be quickly and safely connected to the work spindle of the hand tool and removed if necessary, the use of auxiliary tools not applicable.
  • the invention proposes that the device according to the preamble of claim 1 is formed according to the characterizing part of the claim.
  • the main part of this device is connected in a conventional manner to the work spindle, one being self. understandably chooses a type of connection that cannot be released by the forces and moments acting on the tool. Then you put the tool, which has a corresponding center hole, on the peg-shaped shoulder of the base part and then you mount the locking part, whereby the disc-shaped tool, for example, clamped or in another known manner, is held between the two parts of the device.
  • the gap between the support flange of the base part and the counter flange of the closing part is adapted in terms of its shape, in particular its width, the thickness of the tool or the grinding wheel.
  • the former After attaching the locking part to the base part, the former is rotated by a predetermined amount based on a bayonet lock, for example a quarter or half a turn, whereby on the one hand the tool, in particular the grinding wheel, is clamped between the two parts of the device and on the other hand due to the associated axial Force on the flange and counterflange in connection with the self-locking coupling of the two parts, a secure hold of the disc-shaped tool - for the sake of simplicity, only grinding is required disc spoken, without this being meant restrictively - causes.
  • a bayonet lock for example a quarter or half a turn
  • the direction of rotation when "closing" the device runs counter to the working direction of rotation of the work spindle, so that the torques that occur when the motor is switched on, in particular the electric motor, and also when grinding in the closing sense, act on this rotary catch connection.
  • This rotation opening of the device is achieved in a particularly advantageous manner by letting the motor start up briefly against the working direction of rotation.
  • the closing part and the grinding wheel can be removed in the axial direction in the manner mentioned.
  • an advantage of this device is that it can also be retrofitted to an existing hand tool.
  • the support surface against the support flange of the bottom partially facing groove wall of a receiving groove for the locking member is formed.
  • the width of the receiving groove is adapted to the thickness or width of the locking member, so that the pin remains quite stable despite the recesses.
  • the locking member is formed as a web which extends through the insertion bore of the closure member radially, and that the base part has two 180 ° offset from each other support surfaces or grooves .
  • the web can, for example, be manufactured separately and designed as a bolt. It is pressed into corresponding radial bores so that it penetrates the central bore of the closing part radially in the center.
  • Another variant of the invention is characterized in that the two support surfaces or receiving grooves for the locking member are limited inwards by a central bore of the base part and their distance in the circumferential direction corresponds approximately to the thickness of the locking member. In this way, a rotational closing movement can be in the order of 90 ° easy access to about 120 0 without the spigot to weaken particularly.
  • part of the central bore of the base part has a nut thread, the design of which corresponds to that of a bolt thread at the free end of the work spindle.
  • the work spindle is connected to the base part and thus the entire device via a bolt and nut thread.
  • the thread is expediently in an enlarged part of the axial bore of the base part, so that it can extend into the interior of the pin.
  • a preferred embodiment of the invention is characterized in that the closing part has the shape of an annular disc and on its surface facing the support flange of the base part there is an inner collar extending in the axial direction, the outer diameter of which corresponds approximately to the diameter of the central tool bore.
  • Another embodiment of the invention is characterized in that the closing part is provided on its end face facing away from the base part with a cover which prevents the ingress of contaminants into the closing mechanism.
  • the closing part On its circumference that does not engage in the grinding wheel, the closing part can e.g. receive a corrugation. The corrugation makes it easier to turn the locking part.
  • an elastic ring in particular an O-ring or the like, which rests elastically clamping on the pin of the base part.
  • the edge-open groove for the elastic ring is expediently in the region of the collar of the striker.
  • the elastic ring increases the frictional resistance when turning in both the opening and closing directions of rotation, ie its friction is added to that of self-locking. Since an O-ring is subject to a certain amount of wear, this can be replaced, for example, by inserting radially arranged, spring-loaded bolts into the bore of the closing part, which have the same inhibiting effect as the O-ring.
  • the base part 1 consists essentially of a support flange 2 and a peg-shaped projection 3. At the transition from the support flange 2 to the peg-shaped projection 3, a shoulder-like transition can be provided, which forms a counter collar 4. Its outer diameter corresponds to the inner diameter 5 of a grinding wheel 6, shown schematically broken off. The latter is largely supported on a collar 7 of the closing part 8 of the device when the device is assembled. In order to of course, the outer diameter of the collar 7 also corresponds to the inner diameter 5 of the grinding wheel 6. Otherwise, the grinding wheel 6 can be supported only on the collar or only on the counter collar, the other being omitted and the supporting one having a length which essentially corresponds to the grinding wheel thickness .
  • the grinding wheel it is also conceivable for the grinding wheel to be placed directly on the peg-shaped extension 3 without a collar 4 and a counter collar 7 on the closing part 8 or base part 1.
  • a prerequisite is of course an adaptation of the diameter of the peg-shaped extension 3 to the inside diameter 5 of the grinding wheel 6 or the other way around.
  • the closing part simultaneously forms a counter flange.
  • the closing part 8 has an essentially annular shape, and the diameter of its mounting hole 9 corresponds to the diameter of the pin-shaped extension 3, a sliding fit between the two being expedient.
  • the locking part 8 is provided with a locking member 10 which cooperates with a radial receptacle 11 of the base part 1 attached to the free pin end.
  • the locking member 10 is designed as a web 12, which is formed by a bolt which penetrates the push-on bore 9 of the locking part 8 radially centrally.
  • the receptacle 11 consists of a groove 13, which is attached to the free end of the pin and runs in the radial direction and has an internally arcuate contour which is adapted to the cross section of the web 12 or bolt. This allows the closing part 8 to be pushed onto the peg-shaped extension 3 of the base part 1 so far, until the bolt or web 12 occurs on the arcuate groove base.
  • the base part 1 has a central bore 14 which is widened like a shoulder in the area of the counter collar 4. .
  • the enlarged bore part 15 is provided with a nut thread 16.
  • the thread corresponds to that at the free end of a drive spindle of a hand tool, in particular an electrically driven angle grinder.
  • the direction of inclination of the support surfaces 17, 18 or the receiving grooves 19 against the support flange 2 falls against the direction of rotation of the work spindle of the angle grinder or the like.
  • the two parts of the device are held together in the closing direction.
  • the device only opens automatically when the direction of rotation of the work spindle is reversed, in that the self-locking is overcome when the drive motor starts up.
  • the closing part 8 can also be opened by hand in the opposite direction of the arrow 21. Subsequently, in both cases, the closing part 8 is withdrawn from the peg-shaped extension 3 in the opposite direction of the arrow A, so that the grinding wheel 6 or another rotating tool can be removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP84112112A 1983-12-21 1984-10-10 Dispositif pour fixer de préférence un disque à meuler de façon démontable sur une machine portative à moteur Withdrawn EP0147545A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833346148 DE3346148A1 (de) 1983-12-21 1983-12-21 Vorrichtung zum loesbaren befestigen vorzugsweise einer schleifscheibe an einem kraftgetriebenen handwerkzeug
DE3346148 1983-12-21

Publications (2)

Publication Number Publication Date
EP0147545A2 true EP0147545A2 (fr) 1985-07-10
EP0147545A3 EP0147545A3 (fr) 1986-09-10

Family

ID=6217534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112112A Withdrawn EP0147545A3 (fr) 1983-12-21 1984-10-10 Dispositif pour fixer de préférence un disque à meuler de façon démontable sur une machine portative à moteur

Country Status (3)

Country Link
EP (1) EP0147545A3 (fr)
JP (1) JPS60150963A (fr)
DE (1) DE3346148A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2613268A1 (fr) * 1987-04-02 1988-10-07 Briot Int Dispositif d'application d'un adaptateur pour machine a centrer les verres optiques
FR2620365A1 (fr) * 1987-09-16 1989-03-17 Metabowerke Gmbh Dispositif de serrage d'outils en forme de disques sur la broche de travail d'une machine-outil portative, en particulier d'une meuleuse
EP0495181A1 (fr) * 1991-01-16 1992-07-22 C. & E. FEIN GmbH & Co. Meuleuse portative avec dispositif d'accouplement rapide
EP0521259A1 (fr) * 1991-07-05 1993-01-07 C. & E. FEIN GmbH & Co. Machine-outil portative
WO2002051588A1 (fr) * 2000-12-22 2002-07-04 Pro-Laser Weco Gmbh Dispositif de fixation amovible d"une meule ou d"un paquet de meules sur une broche porte-meule
EP1454595A1 (fr) * 2003-03-06 2004-09-08 Dental Forschung Schleicher GmbH Mandrin pour disques d'usinage
CN100534720C (zh) * 2008-05-07 2009-09-02 常熟市中恒数控设备制造有限公司 磨床主轴端头机构
CN102029565A (zh) * 2009-10-05 2011-04-27 杨泰和 内转式马达直接驱动的手持转角砂轮机
WO2012126543A1 (fr) * 2011-03-18 2012-09-27 Robert Bosch Gmbh Dispositif de serrage pour machine-outil
EP2548697A2 (fr) 2011-07-19 2013-01-23 Flex-Elektrowerkzeuge GmbH Dispositif porte-outil, combinaison de dispositif porte-outil et d'outil et machine-outil
EP2428314A3 (fr) * 2010-08-23 2014-08-13 Huusko Kalevi Support d'outil
KR200480909Y1 (ko) * 2015-04-03 2016-07-25 계양전기 주식회사 그라인더용 척
DK178917B1 (da) * 2016-05-31 2017-05-22 Kadicma Aps Bajonetkobling samt bearbejdningsenhed med sådan bajonetkobling
CN113118881A (zh) * 2021-04-29 2021-07-16 郑州科技学院 旋转多刀冲齿机保障多刀安装基准重合精度的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520417C2 (de) * 1985-06-07 1994-01-20 Fein C & E Vorrichtung zum lösbaren Befestigen eines scheibenförmigen Werkzeugs, vorzugsweise einer Schleifscheibe oder dgl., an der Arbeitsspindel eines kraftgetriebenen Handwerkzeugs
CH670063A5 (fr) * 1985-08-24 1989-05-12 Hauni Werke Koerber & Co Kg

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426170A (en) * 1946-01-28 1947-08-26 Raymond F Akers Grinding wheel arbor
LU55244A1 (fr) * 1967-01-19 1968-03-27
DE2156770A1 (de) * 1971-11-16 1973-05-30 Hermann Hefner Vorrichtung zur loesbaren befestigung einer schleifscheibe oder dergleichen auf einer treibspindel
US3912411A (en) * 1971-09-22 1975-10-14 Robert H Moffat Thread latching mechanism
JPS5633206A (en) * 1979-08-21 1981-04-03 Miyagawa Kogyo Kk Tap collet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426170A (en) * 1946-01-28 1947-08-26 Raymond F Akers Grinding wheel arbor
LU55244A1 (fr) * 1967-01-19 1968-03-27
US3912411A (en) * 1971-09-22 1975-10-14 Robert H Moffat Thread latching mechanism
DE2156770A1 (de) * 1971-11-16 1973-05-30 Hermann Hefner Vorrichtung zur loesbaren befestigung einer schleifscheibe oder dergleichen auf einer treibspindel
JPS5633206A (en) * 1979-08-21 1981-04-03 Miyagawa Kogyo Kk Tap collet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, Band 5, Nr. 87 (M-72)[759], 6. Juni 1981; & JP - A - 56 33 206 (MIYAGAWA KOGYO K.k.) 03-04-1981 *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2613268A1 (fr) * 1987-04-02 1988-10-07 Briot Int Dispositif d'application d'un adaptateur pour machine a centrer les verres optiques
FR2620365A1 (fr) * 1987-09-16 1989-03-17 Metabowerke Gmbh Dispositif de serrage d'outils en forme de disques sur la broche de travail d'une machine-outil portative, en particulier d'une meuleuse
EP0495181A1 (fr) * 1991-01-16 1992-07-22 C. & E. FEIN GmbH & Co. Meuleuse portative avec dispositif d'accouplement rapide
EP0521259A1 (fr) * 1991-07-05 1993-01-07 C. & E. FEIN GmbH & Co. Machine-outil portative
WO2002051588A1 (fr) * 2000-12-22 2002-07-04 Pro-Laser Weco Gmbh Dispositif de fixation amovible d"une meule ou d"un paquet de meules sur une broche porte-meule
DE10064163A1 (de) * 2000-12-22 2002-07-11 Wernicke & Co Gmbh Anordnung zum lösbaren Befestigen einer Schleifscheibe oder eines Schleifscheibenpakets an einer Schleifspindel
DE10064163C2 (de) * 2000-12-22 2003-04-17 Wernicke & Co Gmbh Anordnung zum lösbaren Befestigen einer Schleifscheibe oder eines Schleifscheibenpakets an einer Schleifspindel
US6966824B2 (en) 2000-12-22 2005-11-22 Weco Optik Gmbh Arrangement for detachably securing a grinding wheel or a group of grinding wheels on a wheel spindle
EP1454595A1 (fr) * 2003-03-06 2004-09-08 Dental Forschung Schleicher GmbH Mandrin pour disques d'usinage
WO2004078054A1 (fr) * 2003-03-06 2004-09-16 Dental Forschung Schleicher Gmbh Mandrin pour disques de travail
US7367874B2 (en) 2003-03-06 2008-05-06 Dfs-Diamon Gmbh Mandrel for working disks
CN100534720C (zh) * 2008-05-07 2009-09-02 常熟市中恒数控设备制造有限公司 磨床主轴端头机构
CN102029565A (zh) * 2009-10-05 2011-04-27 杨泰和 内转式马达直接驱动的手持转角砂轮机
CN102029565B (zh) * 2009-10-05 2014-11-12 杨泰和 内转式马达直接驱动的手持转角砂轮机
EP2428314A3 (fr) * 2010-08-23 2014-08-13 Huusko Kalevi Support d'outil
WO2012126543A1 (fr) * 2011-03-18 2012-09-27 Robert Bosch Gmbh Dispositif de serrage pour machine-outil
EP2548697A2 (fr) 2011-07-19 2013-01-23 Flex-Elektrowerkzeuge GmbH Dispositif porte-outil, combinaison de dispositif porte-outil et d'outil et machine-outil
DE102011051938A1 (de) * 2011-07-19 2013-01-24 Flex-Elektrowerkzeuge Gmbh Werkzeugaufnahmevorrichtung, Werkzeugaufnahmevorrichtung-Werkzeug-Kombination und Werkzeugmaschine
EP2548697A3 (fr) * 2011-07-19 2015-09-23 Flex-Elektrowerkzeuge GmbH Dispositif porte-outil, combinaison de dispositif porte-outil et d'outil et machine-outil
KR200480909Y1 (ko) * 2015-04-03 2016-07-25 계양전기 주식회사 그라인더용 척
DK178917B1 (da) * 2016-05-31 2017-05-22 Kadicma Aps Bajonetkobling samt bearbejdningsenhed med sådan bajonetkobling
WO2017207007A1 (fr) * 2016-05-31 2017-12-07 Kadicma Aps Raccord à baïonnette et unité d'usinage ayant un tel raccord à baïonnette
US11346401B2 (en) 2016-05-31 2022-05-31 Flex Trim A/S Bayonet coupling and machining unit with such bayonet coupling
CN113118881A (zh) * 2021-04-29 2021-07-16 郑州科技学院 旋转多刀冲齿机保障多刀安装基准重合精度的方法

Also Published As

Publication number Publication date
JPS60150963A (ja) 1985-08-08
EP0147545A3 (fr) 1986-09-10
DE3346148A1 (de) 1985-07-04

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