EP0666147B1 - Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte - Google Patents
Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte Download PDFInfo
- Publication number
- EP0666147B1 EP0666147B1 EP94810732A EP94810732A EP0666147B1 EP 0666147 B1 EP0666147 B1 EP 0666147B1 EP 94810732 A EP94810732 A EP 94810732A EP 94810732 A EP94810732 A EP 94810732A EP 0666147 B1 EP0666147 B1 EP 0666147B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- groove
- longitudinal groove
- section
- tool according
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
- B25D17/084—Rotating chucks or sockets
- B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/003—Details relating to chucks with radially movable locking elements
- B25D2217/0034—Details of shank profiles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17042—Lost motion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/907—Tool or Tool with support including detailed shank
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/94—Tool-support
- Y10T408/95—Tool-support with tool-retaining means
- Y10T408/953—Clamping jaws
Definitions
- the invention relates to a tool for insertion into a tool holder for the Chisels and / or impact drilling hand tools with a clamping shank with at least one axially closed locking groove, at least one of the Locking groove diametrically opposite to the free end of the Clamping shaft open longitudinal groove and two mutually essentially diametrically opposite rotary driving grooves open towards the free end of the clamping shaft, the different cross sections with different sizes, radially outwards have directed opening surfaces.
- the tools mentioned are used in hand tool devices and their tool holder two carrier bars and one or two radially displaceable locking elements exhibit.
- the driver strips are for connection to the rotary driver grooves provided and serve to transmit the torque.
- the radial displaceable locking elements, which are designed as balls or rollers can come into contact with the axially closed locking grooves and serve thus the axial fixation of the tools in the tool holder.
- a serious disadvantage of the aforementioned, provided with a longitudinal groove in the clamping shaft Tool is that it is in hand tool devices, their tool holder has two locking elements, can not be used because the second Locking element cannot enter the longitudinal groove. Will the tool against it used in a tool holder with only one locking element Carrier strips of the same cross-section rotated the possibility of insertion by 180 °. Due to the existing games or the resilient mounting of the locking elements the means for radial displacement can still be operated, so that the locking elements with the clamping shaft in a sometimes quite strong Friction. This incorrect locking is not without it for the operator further recognizable, since the frictional engagement itself is the usual control movement withstands to detect the axial fixation. Unintentional loosening of the axial Fixing the tool in the tool holder is therefore completely unforeseen and unintentionally in the event of an accident, so that accidents are not excluded.
- the invention is therefore based on the object to provide a tool for Transmission of high torques in appropriately trained tool holders is suitable and enables use in conventional tool holders, there, however, a possible incorrect locking can be sufficiently recognized.
- the object is achieved in that the axial projection surface of the clear cross-section of the longitudinal groove of at least the axial projection surface of the clear Cross-section of the locking groove corresponds and that the two rotary driving grooves in radial direction measured have a smaller depth than the locking groove or the rotary driving groove.
- the tool with the clamping shank according to the invention can be conventional Insert tool holders with two locking elements without problems. Becomes this tool in conventional tool holders with only one locking element properly inserted, there is sufficient axial fixation. In contrast, the tool is rotated through 180 ° in such a tool holder incorrectly inserted, the locking element occurs without further hindrance in the clear cross-section of the longitudinal groove, but does not come with the system there any circumferential parts of the clamping shaft. There is no connection in any way between the clamping shaft and the locking element, so that it is for the operator by failing to make the axial fixation or at the latest when the control handle is used anyway, it can be seen that the Tool has been inserted incorrectly into the tool holder. It is complete excluded that the operator with an incorrectly inserted tool starts machining components.
- the axial projection surface of the clear cross section preferably corresponds to the Longitudinal groove of the axial projection surface of the clear cross section of the locking groove. It is expedient here, based on the axis of symmetry of the Rotary driving grooves to form the longitudinal groove axially symmetrical to the locking groove.
- the longitudinal groove is advantageously trough-shaped.
- Trough-shaped is understood to mean a longitudinal groove, the bottom of which is in cross section seen adapted to the application of the rotationally symmetrical locking bodies is.
- the axial projection surface of the clear cross section of the longitudinal groove is the axial projection area of the clear cross section exceed the locking groove.
- the longitudinal groove preferably has at least one substantially radial one Flank on.
- the flank of the longitudinal groove on the driving side runs essentially radially.
- the remaining Flanks can run in different ways, for example tendon-like or also radial.
- the tool according to the invention is, on the one hand about the fact that it is in the hand tools that are widespread on the market can be used.
- the other task is to use the tool like this to train that it is also suitable for the transmission of larger torques.
- This the latter task can be solved by an appropriately trained tool holder, which cooperates with at least one axially closed locking groove, radially displaceable locking element, two with the rotary driving grooves cooperating slats, which are of different widths with different cross sections are provided, as well as at least one with the longitudinal groove cooperating longitudinal bar.
- the tool shown in FIG. 1 has a clamping shank 1. Diametrically mutually opposite the clamping shank 1, two rotary driving grooves 2, 3, the rotary driving groove 3 having a larger cross section with a larger, radial has outward opening area. In addition, it is axially closed Locking groove 4 provided. This locking groove 4 is diametrically opposite a trough-shaped longitudinal groove 5 is arranged, which to the free end of the clamping shaft 1 is open.
- the tool according to FIG. 2 has a clamping shank 6, which with two each other diametrically opposite rotary driving grooves 7, 8 is provided.
- the Rotary driving groove 8 has a larger cross section with a larger radial outward open area.
- the axial projection surface of the clear cross section of the longitudinal groove 10 exceeds the axial projection surface of the clear cross section of the locking groove 9.
- the drive-side flank 10a of the longitudinal groove 10 is essentially radial formed continuously, for example in the present clamping shaft 6 around a symmetrically formed longitudinal groove 10 with radially extending on both sides Flanks.
- Fig. 3 shows a section through a simplified tool holder ⁇ in which a tool with a clamping shank 1 according to FIG. 1 is used.
- the Tool holder consists essentially of a guide 11, an actuating sleeve 12 and a cage 13.
- the guide 11 has two diametrically opposite one another Carrier strips 11a, 11b.
- the drive bar 11b is opposite the driving bar 11a with a larger cross section with a greater width.
- the guide 11 has a driving bar 11c, which in the present example seen in cross section is dome-shaped.
- For the axial fixation of the tool is also a radially displaceable locking element 14 in the form of a ball intended.
Description
- Fig. 1
- einen Schnitt durch einen Einspannschaft des erfindungsgemässen Werkzeuges;
- Fig. 2
- einen Schnitt durch den Einspannschaft eines weiteren erfindungsgemässen Werkzeuges;
- Fig. 3
- einen Schnitt durch eine vereinfacht dargestellte Werkzeugaufnahme mit einem Werkzeug, das einen Einspannschaft entsprechend Fig. 1 aufweist.
Claims (8)
- Werkzeug zum Einsetzen in eine Werkzeugaufnahme für dem Meisseln und/oder Schlagbohren dienenden Handwerkzeuggeräte mit einem Einspannschaft (1, 6) mit wenigstens einer axial geschlossenen Verriegelungsnut (4, 9), wenigstens einer der Verriegelungsnut (4, 9) diametral gegenüberliegenden, zum freien Ende des Einspannschaftes (1, 6) hin offenen Längsnut (5, 10) sowie zwei einander im wesentlichen diametral gegenüberliegenden, zum freien Ende des Einspannschaftes (1, 6) hin offenen Drehmitnahmenuten (2, 3, 7, 8), die unterschiedliche Querschnitte mit verschieden grossen, radial nach aussen gerichteten Öffnungsflächen haben, dadurch gekennzeichnet, dass die axiale Projektionsfläche des lichten Querschnitts der Längsnut (5, 10) wenigstens der axialen Projektionsfläche des lichten Querschnitts der Verriegelungsnut (4, 9) entspricht und dass die beiden Drehmitnahmenuten (2, 3, 7, 8) in radialer Richtung gemessen eine geringere Tiefe aufweisen, als die Verriegelungsnut (4, 9) oder die Drehmitnahmenut (5, 10).
- Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die axiale Projektionsfläche des lichten Querschnitts der Längsnut (5) der axialen Projektionsfläche des lichten Querschnitts der Verriegelungsnut (4) entspricht.
- Werkzeug nach Anspruch 2, dadurch gekennzeichnet, dass die Längsnut (5) bezogen auf die Symmetrieachse der Drehmitnahmenuten (2, 3) achssymmetrisch zur Verriegelungsnut (4) ausgebildet ist.
- Werkzeug nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Längsnut (5) muldenförmig ausgebildet ist.
- Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die axiale Projektionsfläche des lichten Querschnitts der Längsnut (10) die axiale Projektionsfläche des lichten Querschnitts der Verriegelungsnut (9) übersteigt.
- Werkzeug nach Anspruch (5), dadurch gekennzeichnet, dass die Längsnut (10) wenigstens eine im wesentlichen radial verlaufende Flanke aufweist.
- Werkzeug nach Anspruch 6, dadurch gekennzeichnet, dass die mitnahmeseitige Flanke (10a) der Längsnut (10) im wesentlichen radial verläuft.
- Werkzeugaufnahme mit Aufnahmeöffnung für ein Werkzeug nach einem der Ansprüche 1 bis 7, gekennzeichnet durch mindestens ein, mit der axial geschlossenen Verriegelungsnut zusammenwirkendes, radial verschiebbares Verriegelungselement (14), durch zwei mit den Drehmitnahmenuten zusammenwirkende Mitnahmeleisten (11a, 11b), die durch unterschiedliche Breite mit unterschiedlichen Querschnitten versehen sind sowie durch mindestens eine, mit der Längsnut zusammenwirkende Längsleiste (11c).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4403303 | 1994-02-03 | ||
DE4403303A DE4403303A1 (de) | 1994-02-03 | 1994-02-03 | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0666147A1 EP0666147A1 (de) | 1995-08-09 |
EP0666147B1 true EP0666147B1 (de) | 1999-08-25 |
Family
ID=6509378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94810732A Expired - Lifetime EP0666147B1 (de) | 1994-02-03 | 1994-12-16 | Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte |
Country Status (8)
Country | Link |
---|---|
US (1) | US5529445A (de) |
EP (1) | EP0666147B1 (de) |
JP (1) | JPH07223174A (de) |
CN (1) | CN1112865A (de) |
DE (2) | DE4403303A1 (de) |
DK (1) | DK0666147T3 (de) |
FI (1) | FI950414A (de) |
HU (1) | HU216379B (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4338953A1 (de) * | 1993-11-15 | 1995-05-18 | Krupp Widia Gmbh | Spannvorrichtung zur Verbindung eines Werkzeugkopfes und eines Werkzeughalters an Werkzeugmaschinen |
AU681927B2 (en) * | 1994-01-14 | 1997-09-11 | Robert Bosch Gmbh | Device on hand machine tools for rotary tool drive |
DE20204416U1 (de) * | 2002-03-19 | 2002-07-11 | Heller Dinklage Gmbh Geb | Werkzeug für eine Handwerkzeugmaschine |
EP1535704B1 (de) * | 2003-11-26 | 2010-03-10 | HILTI Aktiengesellschaft | Werkzeugaufnahme für ein drehendes und schlagendes Werkzeug |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7536182U (de) * | 1975-11-14 | 1978-02-02 | Robert Bosch Gmbh, 7000 Stuttgart | Einrichtung zur drehmomentuebertragung |
DE3941646A1 (de) * | 1989-12-16 | 1991-06-20 | Heller Werkzeug Gmbh Geb | Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge |
DE4137120A1 (de) * | 1991-11-12 | 1993-05-13 | Hilti Ag | Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge |
DE4200643A1 (de) * | 1992-01-13 | 1993-07-15 | Hilti Ag | Werkzeug zum schlagbohren und meisseln und werkzeugaufnahme fuer diese werkzeuge |
DE4210451A1 (de) * | 1992-03-30 | 1993-10-07 | Plica Werkzeugfabrik Ag Mollis | Einrichtung zur Drehmomentübertragung |
-
1994
- 1994-02-03 DE DE4403303A patent/DE4403303A1/de not_active Withdrawn
- 1994-12-16 DK DK94810732T patent/DK0666147T3/da active
- 1994-12-16 DE DE59408658T patent/DE59408658D1/de not_active Expired - Lifetime
- 1994-12-16 EP EP94810732A patent/EP0666147B1/de not_active Expired - Lifetime
-
1995
- 1995-01-27 CN CN95101642A patent/CN1112865A/zh active Pending
- 1995-01-31 FI FI950414A patent/FI950414A/fi unknown
- 1995-02-02 US US08/382,726 patent/US5529445A/en not_active Expired - Fee Related
- 1995-02-02 JP JP7016031A patent/JPH07223174A/ja active Pending
- 1995-02-02 HU HU9500315A patent/HU216379B/hu not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
HU216379B (hu) | 1999-06-28 |
JPH07223174A (ja) | 1995-08-22 |
DE4403303A1 (de) | 1995-08-10 |
US5529445A (en) | 1996-06-25 |
DK0666147T3 (da) | 2000-02-07 |
HUT69578A (en) | 1995-09-28 |
HU9500315D0 (en) | 1995-03-28 |
DE59408658D1 (de) | 1999-09-30 |
FI950414A (fi) | 1995-08-04 |
FI950414A0 (fi) | 1995-01-31 |
EP0666147A1 (de) | 1995-08-09 |
CN1112865A (zh) | 1995-12-06 |
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