DE4337023B4 - Motor-driven hand tool machine - Google Patents
Motor-driven hand tool machine Download PDFInfo
- Publication number
- DE4337023B4 DE4337023B4 DE4337023A DE4337023A DE4337023B4 DE 4337023 B4 DE4337023 B4 DE 4337023B4 DE 4337023 A DE4337023 A DE 4337023A DE 4337023 A DE4337023 A DE 4337023A DE 4337023 B4 DE4337023 B4 DE 4337023B4
- Authority
- DE
- Germany
- Prior art keywords
- work spindle
- outer flange
- support ring
- flange
- spindle
- 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 - Fee Related
Links
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000981 bystander Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
- B23Q11/0092—Safety devices protecting the operator, e.g. against accident or noise actuating braking or stopping means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Portable Power Tools In General (AREA)
Abstract
Motorgetriebene Handwerkzeugmaschine mit einer Spindelarretierung (20) oder -bremse und einer Arbeitsspindel (12), auf der ein scheibenförmiges Werkzeug (26) mit einer die Arbeitsspindel (12) mit Spiel übergreifenden zentralen Ausnehmung (28) zwischen einem Innenflansch (18) und einem Außenflansch (25, 75) festgespannt ist, wobei der Außenflansch (25, 75) auf ein Außengewinde (27) an einem freien Ende (24) der Arbeitsspindel (12) entgegen deren Arbeitsdrehrichtung festschraubbar ist, wobei die Arbeitsspindel (12) und der Außenflansch (25, 75) mit Abflachungen (32, 39) versehen sind, die den Außenflansch (25, 75) drehfest auf der Arbeitsspindel (12) halten und das selbsttätige Lösen des Außenflansches (25, 75) von dem freien Ende (24) der Arbeitsspindel (12) verhindern, und der Außenflansch (25, 75) einen Stützring (42) aufweist, der sich beim Abbremsen der Arbeitsspindel (12) von dem Werkzeug (26) axial wegbewegt und den Spanndruck auf das Werkzeug (28) selbsttätig verringert, wobei der Außenflansch (25, 75) anschließend ohne Hilfswerkzeug von Hand abschraubbar ist.motorized Hand tool with a spindle lock (20) or brake and a work spindle (12) on which a disk-shaped tool (26) with a work spindle (12) with game cross central recess (28) between an inner flange (18) and a outer flange (25, 75) is clamped, wherein the outer flange (25, 75) on an external thread (27) at a free end (24) of the work spindle (12) opposite whose working direction of rotation is festschraubbar, wherein the work spindle (12) and the outer flange (25, 75) with flats (32, 39) are provided, which the outer flange (25, 75) against rotation on the work spindle (12) hold and the automatic release of the outer flange (25, 75) from the free end (24) of the work spindle (12) prevent and the outer flange (25, 75) a support ring (42), which during braking of the work spindle (12) of the tool (26) moved axially and the clamping pressure on the tool (28) automatically reduced, with the outer flange (25, 75) afterwards can be unscrewed by hand without auxiliary tools.
Description
Stand der TechnikState of technology
Die Erfindung betrifft eine motorgetriebene Handwerkzeugmaschine.The The invention relates to a motor-driven hand tool machine.
Durch
die
Die bekannte Handwerkzeugmaschine hat den Nachteil, daß beim plötzlichen Anhalten der Arbeitsspindel nach Abstellen des Antriebsmotors durch Betätigen der Spindelstopeinrichtung die Schleifscheibe infolge ihrer Trägheit dazu neigt, sich weiter zu drehen und dabei die Spannvorrichtung und sich selbst von der Arbeitsspindel zu lösen.The known hand tool has the disadvantage that the sudden Stopping the work spindle after switching off the drive motor Actuate the Spindelstopeinrichtung the grinding wheel due to their inertia tends to continue turning while holding the jig and yourself to release itself from the work spindle.
Dieses unbeabsichtigte Lösen der Spannvorrichtung kann dazu führen, daß die Schleifscheibe sich bei hoher Drehzahl von der Arbeitsspindel löst und infolge der ihr innenwohnenden hohen Energie den Bedienenden oder Umstehende gefährdet.This unintentional release the tensioner can cause that the Abrasive disc loosens at high speed from the work spindle and due the inhuman high energy to the operator or bystanders endangered.
Aufgabe der Erfindung ist es, diesen Nachteil zu vermeiden.task The invention is to avoid this disadvantage.
Vorteile der ErfindungAdvantages of invention
Gelöst wird diese Aufgabe durch eine motorgetriebene Handwerkzeugmaschine mit den Merkmalen des Anspruchs 1. Sie hat den Vorteil, daß ein unbeabsichtigtes Lösen des scheibenförmigen Werkzeugs, insbesondere der Schleifscheibe auch bei Betätigen der Spindelarretierung bei hoher Drehzahl der Arbeitsspindel verhindert wird. Damit ist ein hoher Gewinn an Sicherheit verbunden.Is solved this task by a motor-driven hand tool with The features of claim 1. It has the advantage that an unintentional Solve the discoid Tool, in particular the grinding wheel even when pressing the Spindle locking at high speed of the work spindle prevented becomes. This is associated with a high level of security.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.Further advantageous embodiments of the invention will become apparent from the dependent Claims.
Zeichnungdrawing
Ausführungsbeispiele der Erfindung sind in der nachfolgenden Beschreibung anhand der zugehörigen Zeichnung näher erläutert.embodiments The invention are described in the following description with reference to associated Drawing closer explained.
Es
zeigen
Beschreibung der Ausführungsbeispieledescription the embodiments
Die
in
Die
Arbeitsspindel
Am
freien Ende
Die
Drehrichtung der Arbeitsspindel
Die
Arbeitsspindel
Der
Außenflansch
Der
Sicherungsring
Die
Flanschfläche
Zwischen
dem Stützring
Auf
seiner der Schleifscheibe
Der
Außenflansch
Das
Innengewinde
Der
in
Aus
der
Das
in
Beim
Schrauben des Außenflansches
Ist
die Schleifscheibe
Wird
dabei die Schleifscheibe
Durch
die hohe Oberflächenrauhigkeit
der Flanschfläche
Bei
Erreichen des Höchstspannmoments zwischen
dem Stützring
Nach
Abschalten des nicht dargestellten Motors wird bei hoher Bremsbeschleunigung,
beispielsweise durch eine nicht dargestellte elektromagnetische
Bremse oder durch Einrasten der Spindelarretierung
Dieser kann anschließend ohne Hilfswerkzeug von Hand vollends mit geringem Kraftaufwand abgeschraubt werden.This can subsequently unscrewed completely by hand with little effort without auxiliary tool become.
Das
bei herkömmlichen
Spannmuttern unbeabsichtigte, lösende
Mitdrehen mit der Schleifscheibe
Bei einem weiteren Ausführungsbeispiel eines Außenflansches sind zwischen dem Stützring und dem Außenring reibungsarme Dichtmittel angeordnet, so daß kein Staub in das Innere des Außenflansches gelangt und die Verdrehung des Grundkörpers gegenüber dem Sicherungsring bzw. des Stützrings gegenüber dem Sicherungsring erschwert wird.at a further embodiment an outer flange are between the support ring and the outer ring low-friction sealant arranged so that no dust in the interior of the outer flange reaches and the rotation of the body relative to the circlip or of the support ring across from the circlip is difficult.
Claims (5)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4337023A DE4337023B4 (en) | 1993-10-29 | 1993-10-29 | Motor-driven hand tool machine |
FR9411671A FR2711570B1 (en) | 1993-10-29 | 1994-09-29 | Hand-held machine tool driven by a motor. |
GB9419776A GB2283191B (en) | 1993-10-29 | 1994-09-30 | Motor-driven hand machine tool |
ITMI942184A IT1271698B (en) | 1993-10-29 | 1994-10-25 | PORTABLE MACHINE TOOL OPERATED BY MOTOR |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4337023A DE4337023B4 (en) | 1993-10-29 | 1993-10-29 | Motor-driven hand tool machine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4337023A1 DE4337023A1 (en) | 1995-05-04 |
DE4337023B4 true DE4337023B4 (en) | 2007-08-09 |
Family
ID=6501386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4337023A Expired - Fee Related DE4337023B4 (en) | 1993-10-29 | 1993-10-29 | Motor-driven hand tool machine |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE4337023B4 (en) |
FR (1) | FR2711570B1 (en) |
GB (1) | GB2283191B (en) |
IT (1) | IT1271698B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE507264C2 (en) * | 1996-06-13 | 1998-05-04 | Atlas Copco Tools Ab | Handheld power tool |
DE10056211A1 (en) * | 2000-11-13 | 2002-05-23 | Neudecker & Jolitz Gmbh & Co | Rapid clamp nut is divided into inner body with spindle opening and connected outer body movable relative to each other via gears to allow very high pressure of pressing body on tool |
DE10205848C2 (en) * | 2002-02-13 | 2003-12-04 | Metabowerke Gmbh | Clamping nut for fixing a disk-shaped tool |
US8087977B2 (en) | 2005-05-13 | 2012-01-03 | Black & Decker Inc. | Angle grinder |
US7988538B2 (en) | 2006-10-13 | 2011-08-02 | Black & Decker Inc. | Large angle grinder |
CN101264578B (en) * | 2007-03-14 | 2010-11-24 | 苏州宝时得电动工具有限公司 | Power tool |
DE102014102705B4 (en) | 2014-02-28 | 2020-06-18 | Metabowerke Gmbh | Clamping nut |
DE102016220367A1 (en) * | 2016-10-18 | 2018-04-19 | Robert Bosch Gmbh | Quick-clamping device for a portable power tool having at least one output shaft which can be driven in rotation, in particular an angle grinder |
US10818450B2 (en) | 2017-06-14 | 2020-10-27 | Black & Decker Inc. | Paddle switch |
FR3118431B1 (en) * | 2020-12-29 | 2023-03-24 | Renault Georges Ets | Portable tool, grinder or grinder type. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3731026C2 (en) * | 1987-09-16 | 1990-03-01 | Metabowerke Gmbh & Co, 7440 Nuertingen, De | |
DE3917345A1 (en) * | 1989-05-27 | 1990-11-29 | Licentia Gmbh | Non-slip wheel clamping device for angle grinder - has serrated collar and wheel flange faces to increase clamping according to wheel loading |
DE4105340C2 (en) * | 1991-02-21 | 1993-09-30 | Atlas Copco Elektrowerkzeuge | Hand-held angle grinder with a brake arrangement and a device having a spur toothing or similar form-fitting connection for securing the clamping flange against automatic loosening during the braking process |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3644440A1 (en) * | 1986-12-24 | 1988-07-07 | Bosch Gmbh Robert | TENSIONING DEVICE FOR DETACHABLE FASTENING OF A TOOL, IN PARTICULAR A DISC |
DE3644441A1 (en) * | 1986-12-24 | 1988-07-07 | Bosch Gmbh Robert | TENSIONING DEVICE FOR DETACHABLE FASTENING OF A TOOL, IN PARTICULAR A DISC |
US5464365A (en) * | 1991-09-21 | 1995-11-07 | Robert Bosch Gmbh | Motor-driven hand-held machine tool |
GB9204345D0 (en) * | 1992-02-28 | 1992-04-08 | Black & Decker Inc | Improvements in or relating to flange locks |
JP3280715B2 (en) * | 1992-08-31 | 2002-05-13 | 大治郎 中村 | Tightening screw |
FR2698032B1 (en) * | 1992-11-16 | 1995-10-06 | Metabowerke Gmbh | QUICK TIGHTENING DEVICE FOR AXIAL TIGHTENING OF A DISC-SHAPED TOOL. |
GB9304539D0 (en) * | 1993-03-05 | 1993-04-21 | Black & Decker Inc | A device having a flange lock |
-
1993
- 1993-10-29 DE DE4337023A patent/DE4337023B4/en not_active Expired - Fee Related
-
1994
- 1994-09-29 FR FR9411671A patent/FR2711570B1/en not_active Expired - Fee Related
- 1994-09-30 GB GB9419776A patent/GB2283191B/en not_active Expired - Fee Related
- 1994-10-25 IT ITMI942184A patent/IT1271698B/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3731026C2 (en) * | 1987-09-16 | 1990-03-01 | Metabowerke Gmbh & Co, 7440 Nuertingen, De | |
DE3917345A1 (en) * | 1989-05-27 | 1990-11-29 | Licentia Gmbh | Non-slip wheel clamping device for angle grinder - has serrated collar and wheel flange faces to increase clamping according to wheel loading |
DE4105340C2 (en) * | 1991-02-21 | 1993-09-30 | Atlas Copco Elektrowerkzeuge | Hand-held angle grinder with a brake arrangement and a device having a spur toothing or similar form-fitting connection for securing the clamping flange against automatic loosening during the braking process |
Also Published As
Publication number | Publication date |
---|---|
IT1271698B (en) | 1997-06-04 |
GB9419776D0 (en) | 1994-11-16 |
ITMI942184A1 (en) | 1996-04-25 |
FR2711570B1 (en) | 1996-07-19 |
GB2283191A (en) | 1995-05-03 |
FR2711570A1 (en) | 1995-05-05 |
ITMI942184A0 (en) | 1994-10-25 |
GB2283191B (en) | 1997-07-02 |
DE4337023A1 (en) | 1995-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8120 | Willingness to grant licences paragraph 23 | ||
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110502 |