EP0962283B1 - Kraftgetriebenes Handwerkzeug - Google Patents
Kraftgetriebenes Handwerkzeug Download PDFInfo
- Publication number
- EP0962283B1 EP0962283B1 EP99106257A EP99106257A EP0962283B1 EP 0962283 B1 EP0962283 B1 EP 0962283B1 EP 99106257 A EP99106257 A EP 99106257A EP 99106257 A EP99106257 A EP 99106257A EP 0962283 B1 EP0962283 B1 EP 0962283B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- clamping
- hand
- strutting
- mounting flange
- 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 - Lifetime
Links
Images
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
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
-
- 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 power-driven hand tool according to the The preamble of claim 1 or 6.
- Such a power-driven hand tool is from the EP-B-0 244 465 known.
- a grinding tool is used an oscillation drive with high frequency and small swivel angle in an oscillating movement around the longitudinal axis of the tool.
- the attachment of the Tool on the work spindle usually by means of a central Fastening screw or by means of a central Mounting flange.
- US-A-3 376 675 is a rotatingly driven one Hand tool known that has a grinding head, on the Underside of sandpaper using a conical mounting flange can be spanned by a spring-loaded The tension anchor is applied in such a way that the sandpaper is securely clamped.
- the well-known hand tool is only for a rotating drive suitable and has the disadvantage that the clamping and Loosening the sandpaper is relatively expensive and that Clamping device is relatively complicated and therefore expensive to build is.
- an angle grinder is known from JP-A-49-6431, in which the grinding wheel with the help of a flange-like elastic Clamping element in a central fastening opening the grinding wheel engages with the interposition of a Spreading element with a central, axially displaceable Mandrel is connected to the work spindle can be clamped.
- Such a clamping device is in particular for production particularly high clamping forces, such as those found in high-speed grinding wheels are necessary.
- the jig is therefore designed and made correspondingly complex no easy interchangeability of the tool to be clamped, like an oscillating tool is required.
- the object of the invention is therefore based, an improved, oscillating powered hand tool to create a manual tool change is possible.
- the structure and handling should be as possible be kept simple.
- tension anchor and expansion element are preferred or adapter sleeve and work spindle matched to each other, that in normal operation even without a large one Clamping force a sufficiently secure connection to the drive of the Tool through the work spindle.
- FIG. 1 shows a power-driven hand tool according to the invention designated overall by the number 10.
- a housing 29 is purely schematic indicated, in which an electric motor 31 is received, the a work spindle via an oscillation drive 30 of a known type 11 drives by the oscillation drive 30 with high frequency in the order of about 10,000 and 25,000 oscillations per minute and with a small swivel angle approximately in the range between 0.5 and 7 ° around the longitudinal axis 32 is driven oscillating.
- outer end 12 of the work spindle is a tool designated overall with the number 22 in the following attached described in more detail. With the tool it is a triangular grinding disc with convex Outer edges, as known from EP-B-0 244 465 is.
- the tool 22 thus comprises a support plate 23 which by a central fastening opening 27 is penetrated.
- a support plate On the support plate is a relatively hard foam Support body 24 added, on the underside of a Velcro adhesive material 25 is provided.
- a Velcro adhesive material 25 On the Velcro adhesive material 25 can a grinding or polishing element 26 by means of the Velcro adhesive material be attached in a known manner.
- Below the fastening opening 27 is inside the support body 24 a recess 28 is provided which accommodates a mounting flange 15 allowed.
- the mounting flange 15 is with a cylindrical tension anchor 17 rigidly connected to the the mounting flange 15 facing away from a conical end Section 18 is provided.
- a spreading element 19 coaxially penetrates that in the area of conical section 18 of the tension anchor 17 one on the conical Section of the slope after the adjusted expansion cone 20 having.
- an intermediate flange 16 is molded onto the expansion element 19, the support plate 23 against the holding portion 14 of the work spindle 11 acted upon.
- a compression spring 21 provided through which the conical section 18 of the tension anchor 17 is applied against the expansion cone 20.
- tension anchor 17, expansion element 19 and the inner surface of the work spindle designed as a hollow spindle 11 are now coordinated so that the spreading, the expansion element 19 through the conical section 18th experienced, sufficient to have an adequate, force-locking connection to produce between work spindle 11 and tool 22.
- there can also be a positive connection between Work spindle and tool may be provided.
- the attachment of the tool 22 takes place in the opposite direction.
- the tension anchor 17 is together with the Spreading element 19 through the fastening opening 27 of the tool 22 inserted into the work spindle 11 and against the action of the compression spring 21 pressed in the direction of the arrow 34, until the intermediate flange in the recess 28 from the inside abuts the support plate 23 and finally under spring tension is held so that the tool 22 against the Holding section 14 of the work spindle 11 is clamped.
- a piece of sandpaper 26 by means of the Velcro adhesive material 25 are attached to the surface of the support body 24.
- a positive connection between the two e.g. be provided as profiling or corrugation 33, as indicated in Fig. 2.
- FIG. 3 A variant of the embodiment according to FIG. 1 is shown in FIG. 3 and designated overall by the number 40.
- the hand tool 40 has one not shown in FIG Has oscillating driven work spindle 41, having a first, outer end 42 on which a holding section 44 is in the form of a flange, and with a second, end 43 opposite end 43.
- a total Tool designated with the number 52 which in turn as Grinding tool according to that previously described with reference to FIG. 1 Execution can be formed with its support plate 53 on the holding section 44 by means of a fastening flange 45 held with a rigid anchor 47 held in a spreading element 49 under the tension of a spring 51 is.
- the tension anchor 47 has on its the mounting flange 45 opposite end a conical section 48 on, which is followed by an extension 54 by a Pressure piece 46 is completed.
- the expansion element 49, the tension anchor 47 is penetrated, points in the region of the conical Section 48 a correspondingly inclined expansion cone 50 on.
- a spring 51 Between the end face of the expansion element 49 and the Pressure piece 46 is held a spring 51 through which the Tension anchor 47 with its conical section 48 against the Expansion cone 50 of the expansion element is applied.
- the Spreading element 49 is spread slightly under the action of spring 51, so that the tension anchor 47 frictionally in the work spindle 41 is included.
- the tool is 52 frictionally between the mounting flange 45 and the holding portion 44 clamped.
- the tension anchor 47 can be used for the purpose of achieving a better one Preload force can also be hollow and in the area of the conical Section 48 may be slotted.
- an actuating element 55 in the form of a foldable bracket provided on which the entire tensioning unit can be pulled out. If the work spindle 41 its end facing away from the tool 52 is accessible can alternatively be the pressure piece 46 against the action the spring 51 are pressed so that the spread of the Expansion element 49 is lifted and the tension anchor 47 together Spreading element 49 are pulled out of the work spindle 41 can.
- FIG. 4 Another exemplary embodiment of the invention is shown in FIG. 4 designated overall by the number 60.
- a work spindle 61 designed as a hollow spindle provided in a known manner by a not shown Oscillation drive is driven.
- an adapter sleeve 69 is received on the tool 72 facing end is spread out conically and with a conical section 70 on a conical inner surface 76 of the work spindle 61 abuts in this area.
- a mounting flange 64 molded by means of which the tool 72 against a holding section 64 in the form of a flange at the first, outer end 62 the work spindle 61 can be clamped.
- a clamping anchor 67 is received within the clamping sleeve 69, that at its outer, tool-side end by a clamping cone 68 is completed, the slope of the conical section 70 of the adapter sleeve 69 is adapted.
- the adapter sleeve 69 has a shoulder 79a approximately in the middle of its longitudinal extent on which a compression spring 71 rests, the other End engages a shoulder 79b of the tension anchor 67 to this towards the second, first end 62 of the work spindle 61 act opposite end.
- the tension anchor 67 can therefore include the tensioning sleeve 69 through the fastening opening 77 of the tool 72 into the Work spindle 61 inserted and pressed until they under spring tension in the work spindle 61 frictionally is held so that the tool 72 with its support plate 73rd through the mounting flange 65 securely against the holding portion 64 is braced.
- the tension anchor 67 is on its opposite the tool 72 End extended by a pressure piece 66 that outwards protrudes from the housing 79.
- the mounting flange 65 be that this when moving the tension cone 68 so far retracts that the mounting flange 65 through the mounting opening 77 can be pulled.
- the tool 72 can in turn, as previously based on the Fig. 1 shown on the underside of the support plate 73 with be provided a support body 74 on which a Velcro adhesive material intended to hold an abrasive or polishing agent is.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
- Fig. 1
- ein erstes Ausführungsbeispiel der Erfindung in geschnittener, stark vereinfachter Ausführung;
- Fig. 2
- einen Schnitt längs der Linie II-II gemäß Fig. 1, auf dem lediglich Arbeitsspindel, Spannelement und Spannanker dargestellt sind;
- Fig. 3
- eine zweite Alternative der Erfindung in geschnittener, stark vereinfachter Darstellung;
- Fig. 4
- eine weitere Variante der Erfindung in stark vereinfachter, geschnittener Darstellung;
- Fig. 5
- einen vergrößerten Ausschnitt aus Fig. 4 im Bereich des Befestigungsflansches.
Claims (9)
- Kraftgetriebenes Handwerkzeug mit einem Oszillationsbetrieb, der eine Arbeitsspindel (11, 41) zum Antrieb eines Werkzeugs (22, 52) um ihre Längsachse (32) oszillierend antreibt, wobei das werkzeug (22, 52) zwischen einem Halteabschnitt (14, 44) an einem ersten werkzeugseitigen Ende (12, 42) der Arbeitsspindel (11, 41) und einem Befestigungsflansch (15, 45) fixierbar ist, dadurch gekennzeichnet, daß der Befestigungsflansch (15, 45) mit einem axial verschiebbaren Spannanker (17, 47) starr verbunden ist, der ein Spreizelement (19, 49) durchsetzt, mittels dessen der Spannanker (17, 47) gegen die Arbeitsspindel (11, 41) verspannbar ist, und daß die Arbeitsspindel (11, 41) als Hohlspindel ausgebildet ist, in die das Spreizelement (19, 49) zusammen mit dem Spannanker (17, 47) von außen einführbar ist.
- Handwerkzeug nach Anspruch 1, bei dem ein mit dem Spreizelement (19) verbundener Zwischenflansch (16) vorgesehen ist, der zwischen dem Befestigungsflansch (15) und dem Halteabschnitt (14) angeordnet ist.
- Handwerkzeug nach Anspruch 1 oder 2, bei dem der Spannanker (17, 47) einen konisch ausgebildeten Spannabschnitt (18, 48) aufweist, der mit einem Spreizkonus (20, 50) am Spreizelement (19, 49) zur Aufweitung des Spreizelements (19, 49) zusammenwirkt.
- Handwerkzeug nach Anspruch 1, 2 oder 3, bei dem der Spannanker (17, 47) gegen das Spreizelement (19, 49) elastisch vorgespannt ist.
- Handwerkzeug nach Anspruch 3 oder 4, bei dem der Spreizkonus (20, 50) an einem zweiten (13, 43), dem ersten (12, 42) Ende gegenüberliegenden Ende der Arbeitsspindel (11, 41) vorgesehen ist.
- Kraftgetriebenes Handwerkzeug mit einem Oszillationsantrieb, der eine Arbeitsspindel (61) zum Antrieb eines Werkzeugs (72) um ihre Längsachse (32) oszillierend antreibt, bei dem das Werkzeug (72) zwischen einem Halteabschnitt (64) an einem ersten werkzeugseitigen Ende (62) der Arbeitsspindel (61) und einem Befestigungsflansch (65) fixierbar ist, dadurch gekennzeichnet, daß der Befestigungsflansch (65) mit einer Spannhülse (69) verbunden ist, die von einem Spannanker (67) durchsetzt ist, der zwischen einer Spannstellung, in der die Spannhülse (69) gegen die Arbeitsspindel (61) verspannt ist, und einer Lösestellung verschiebbar ist, und daß die Arbeitsspindel als Hohlspindel ausgebildet ist, in die die Spannhülse (69) zusammen mit dem Spannanker (67) von außen einführbar ist.
- Handwerkzeug nach Anspruch 6, bei dem die Spannhülse (69) einen konischen Abschnitt (70) aufweist, in den der Spannanker (67) mit einem Spannkegel (68) eingreift, der mittels eines elastischen Elements (71) gegen den konischen Abschnitt (70) verspannt ist, um den Befestigungsflansch (65) gegen den Halteabschnitt (64) zu beaufschlagen.
- Handwerkzeug nach Anspruch 7, bei dem der konische Abschnitt (70) der Spannhülse (69) in Axialrichtung geschlitzt ausgeführt ist.
- Handwerkzeug nach einem der Ansprüche 1 bis 5 bei dem am Spannanker (47) oder am Spreizelement (19) ein von der Werkzeugseite her zugängliches Betätigungselement (55, 16) zum Herausziehen von Spannanker und Spreizelement (17, 47, 19, 49) vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19824387A DE19824387A1 (de) | 1998-05-30 | 1998-05-30 | Kraftgetriebenes Handwerkzeug |
DE19824387 | 1998-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0962283A1 EP0962283A1 (de) | 1999-12-08 |
EP0962283B1 true EP0962283B1 (de) | 2003-12-10 |
Family
ID=7869510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99106257A Expired - Lifetime EP0962283B1 (de) | 1998-05-30 | 1999-04-14 | Kraftgetriebenes Handwerkzeug |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0962283B1 (de) |
DE (2) | DE19824387A1 (de) |
ES (1) | ES2210883T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100574993C (zh) * | 2004-04-23 | 2009-12-30 | C.&E.泛音有限公司 | 具有工具夹紧装置的手持动力工具 |
US9555554B2 (en) | 2013-05-06 | 2017-01-31 | Milwaukee Electric Tool Corporation | Oscillating multi-tool system |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005047402B4 (de) * | 2005-10-04 | 2016-02-11 | Metabowerke Gmbh | Elektrowerkzeuggerät mit einer Werkzeugaufnahme und Werkzeug hierfür |
US7736216B2 (en) * | 2008-08-20 | 2010-06-15 | Black & Decker Inc. | Sander having removable platen |
US9073195B2 (en) | 2010-04-29 | 2015-07-07 | Black & Decker Inc. | Universal accessory for oscillating power tool |
US9186770B2 (en) | 2010-04-29 | 2015-11-17 | Black & Decker Inc. | Oscillating tool attachment feature |
US8925931B2 (en) | 2010-04-29 | 2015-01-06 | Black & Decker Inc. | Oscillating tool |
US9149923B2 (en) | 2010-11-09 | 2015-10-06 | Black & Decker Inc. | Oscillating tools and accessories |
USD832666S1 (en) | 2012-07-16 | 2018-11-06 | Black & Decker Inc. | Oscillating saw blade |
DE202017100297U1 (de) * | 2016-04-11 | 2017-02-10 | Zhejiang Jinmei Electric Tools Co., Ltd. | Schnellwechselstruktur für multifunktionale Säge |
US10265778B2 (en) | 2017-01-16 | 2019-04-23 | Black & Decker Inc. | Accessories for oscillating power tools |
USD814900S1 (en) | 2017-01-16 | 2018-04-10 | Black & Decker Inc. | Blade for oscillating power tools |
EP3892419A1 (de) * | 2020-04-06 | 2021-10-13 | Guido Valentini | Doppelseitiges polier- oder schleifelement zur befestigung an einem handgeführten elektrowerkzeug und elektrowerkzeug mit einem solchen polier- oder schleifelement |
EP4378625A1 (de) * | 2022-12-01 | 2024-06-05 | IPS - Innovative Produktionssysteme GmbH | Spannvorrichtung und vorrichtung zum gleitschleifen |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1383188A (en) * | 1972-08-14 | 1975-02-05 | Stauffer Chemical Co | Sulphoxide and sulphone derivatives of thiocarbamates and the use thereof in herbicidal compositions |
DE3414148A1 (de) * | 1984-04-14 | 1985-10-24 | C. & E. Fein Gmbh & Co, 7000 Stuttgart | Werkzeugbefestigung |
DE3603384A1 (de) * | 1986-02-05 | 1987-08-06 | Bosch Gmbh Robert | Vorrichtung zum loesbaren befestigen eines scheibenfoermigen werkzeugs |
DE8711311U1 (de) * | 1987-08-20 | 1987-10-08 | Marton, Miksa, Windsor, Ontario | Schleifmaschine mit rotierendem Schleifteller |
DE3907567A1 (de) * | 1988-03-10 | 1989-09-28 | Werner Hermann Wera Werke | Schraubendrehereinsatz |
DE4336620C2 (de) * | 1993-10-27 | 1997-07-03 | Fein C & E | Elektrowerkzeug mit einer nur bei ausgeschaltetem Motor betätigbaren Spannvorrichtung |
DE4442978A1 (de) * | 1994-12-02 | 1995-06-08 | Stefan Koenigsheim | Schnellspannvorrichtung für Schleifmittelträger |
DE4444496C2 (de) * | 1994-12-14 | 1999-01-14 | Metec Cnc Praezisionsteile Gmb | Adapter zum Anschluß wechselbarer Werkzeuge an ein Arbeitsgerät |
JPH0929627A (ja) * | 1995-07-13 | 1997-02-04 | Disco Abrasive Syst Ltd | 切削装置のブレード脱着機構 |
DE19526755A1 (de) * | 1995-07-21 | 1997-01-23 | Guehring Joerg Dr | Spannvorrichtung |
SE507850C2 (sv) * | 1996-01-25 | 1998-07-20 | Normek Foersaeljnings Ab | Excenterslipanordning som medger rörlig och snedlutningsbar inställning av slipmedelsbärare relativt verktygshållare |
-
1998
- 1998-05-30 DE DE19824387A patent/DE19824387A1/de not_active Ceased
-
1999
- 1999-04-14 DE DE59907988T patent/DE59907988D1/de not_active Expired - Lifetime
- 1999-04-14 EP EP99106257A patent/EP0962283B1/de not_active Expired - Lifetime
- 1999-04-14 ES ES99106257T patent/ES2210883T3/es not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100574993C (zh) * | 2004-04-23 | 2009-12-30 | C.&E.泛音有限公司 | 具有工具夹紧装置的手持动力工具 |
US9555554B2 (en) | 2013-05-06 | 2017-01-31 | Milwaukee Electric Tool Corporation | Oscillating multi-tool system |
Also Published As
Publication number | Publication date |
---|---|
DE59907988D1 (de) | 2004-01-22 |
EP0962283A1 (de) | 1999-12-08 |
ES2210883T3 (es) | 2004-07-01 |
DE19824387A1 (de) | 1999-12-02 |
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