EP0666147A1 - Tool and tool holding fixture for implements - Google Patents
Tool and tool holding fixture for implements Download PDFInfo
- Publication number
- EP0666147A1 EP0666147A1 EP94810732A EP94810732A EP0666147A1 EP 0666147 A1 EP0666147 A1 EP 0666147A1 EP 94810732 A EP94810732 A EP 94810732A EP 94810732 A EP94810732 A EP 94810732A EP 0666147 A1 EP0666147 A1 EP 0666147A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- longitudinal groove
- groove
- section
- projection surface
- 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
Links
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
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 chiselling and / or impact drilling hand tool devices with a clamping shaft with at least one axially closed locking groove, at least one of the locking groove substantially diametrically opposite longitudinal groove open towards the free end of the clamping shaft and two essentially mutually diametrically opposite rotary driving grooves open towards the free end of the clamping shank, which have different cross-sections with differently sized, radially outward opening surfaces.
- the tools mentioned are used in hand tool devices, the tool holders of which have two carrier bars and one or two radially displaceable locking elements.
- the drive bars are provided for connection to the rotary drive grooves and serve to transmit the torque.
- the radially displaceable locking elements which can be designed as balls or rollers, come into contact with the axially closed locking grooves and thus serve to axially fix the tools in the tool holder.
- the axial fixing of the tools in the tool holder is not particularly demanding, in addition to the use of two locking elements, the use of only one locking element is extremely common.
- This axial fixing essentially involves ensuring that the tool does not unintentionally come loose from the tool holder, so that tools fall down on construction sites in particular no dangers arise.
- the axial fixing serves to allow the tool and the hand tool to be removed from the component again after the machining process has ended.
- a serious disadvantage of the aforementioned tool, which is provided with a longitudinal groove in the clamping shank, is that it cannot be used in hand tool devices, the tool holder of which has two locking elements, since the second locking element cannot enter the longitudinal groove. If, on the other hand, the tool is used in a tool holder with only one locking element, there is the possibility of insertion rotated by 180 ° with drive strips of the same cross-section. Due to the existing games or the resilient mounting of the locking elements, the means for radial displacement can still be actuated, so that the locking elements come into contact with the clamping shaft in a sometimes very strong frictional engagement.
- the invention is therefore based on the object of providing a tool which is suitable for transmitting high torques in appropriately designed tool holders and which enables use in conventional tool holders, but which can sufficiently detect any incorrect locking there.
- the object is achieved in that the axial projection surface of the clear cross section of the longitudinal groove corresponds at least to the axial projection surface of the clear cross section of the locking groove.
- the tool with the clamping shank according to the invention can be inserted into conventional tool holders with two locking elements without problems. If this tool is correctly inserted into conventional tool holders with only one locking element, sufficient axial fixing is achieved. If, on the other hand, the tool is incorrectly inserted rotated by 180 ° in such a tool holder, the locking element will fully enter the clear cross section of the longitudinal groove without further hindrance, but will not come into contact with any circumferential parts of the clamping shaft. As a result, there is no connection of any kind between the clamping shank and the locking element, so that the operator can recognize that the tool has been incorrectly inserted into the tool holder due to the axial fixing not being achieved or at the latest when the control handle is used anyway. It is therefore completely out of the question for the operator to start machining components with the wrong tool.
- the axial projection surface of the clear cross section of the longitudinal groove preferably corresponds to the axial projection surface of the clear cross section of the locking groove.
- the longitudinal groove is advantageously trough-shaped.
- Trough-shaped is understood to mean a longitudinal groove, the bottom of which, viewed in cross section, is adapted to the rotationally symmetrical locking bodies used.
- the axial projection area of the clear cross section of the longitudinal groove can exceed the axial projection area of the clear cross section of the locking groove.
- the longitudinal groove preferably has at least one essentially radially extending flank.
- the flank of the longitudinal groove on the driving side runs essentially radially.
- the other flanks can run in different ways, for example tendon-like or also radially.
- the tool according to the invention is, on the one hand, that it can be used in the hand tool devices which are widely used on the market.
- the further task is to design the tool in such a way that it is also suitable for the transmission of larger torques.
- This latter task can be solved by a suitably designed tool holder, which has at least one radially displaceable locking element interacting with the axially closed locking groove, two driving bars interacting with the rotary driving grooves, which are provided with different cross sections due to different widths, and at least one interacting with the longitudinal groove Has longitudinal bar.
- the tool shown in FIG. 1 has a clamping shank 1. Diametrically opposite one another, the clamping shank 1 has two rotary driving grooves 2, 3, the rotating driving groove 3 having a larger cross section with a larger, radially outward opening surface. In addition, an axially closed locking groove 4 is provided. This locking groove 4 is arranged diametrically opposite a trough-shaped longitudinal groove 5, which is open to the free end of the clamping shaft 1.
- the tool according to FIG. 2 has a clamping shank 6 which is provided with two rotational driving grooves 7, 8 lying diametrically opposite one another.
- the rotary driving groove 8 has a larger cross section with a larger radially outward opening area.
- an axially closed locking groove 9 is provided, which diametrically opposite a longitudinal groove 10.
- 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.
- at least the flank 10a of the longitudinal groove 10 on the entrainment side is also essentially radially extending, whereby, for example in the present clamping shaft 6, it is symmetrical trained longitudinal groove 10 with radially extending flanks on both sides.
- FIG. 3 shows a section through a tool holder shown in simplified form, into which a tool with a clamping shank 1 corresponding to FIG. 1 is inserted.
- the tool holder essentially consists 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 driving bar 11b is provided with a larger cross section with a greater width than the driving bar 11a.
- the guide 11 has a driving bar 11c which, in the present example, is of dome-shaped design seen in cross section.
- a radially displaceable locking element 14 in the form of a ball is also provided for axially fixing the tool.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Werkzeug zum Einsetzen in eine Werkzeugaufnahme für dem Meisseln und/oder Schlagbohren dienende Handwerkzeuggeräte mit einem Einspannschaft mit wenigstens einer axial geschlossenen Verriegelungsnut, wenigstens einer der Verriegelungsnut im wesentlichen diametral gegenüberliegenden zum freien Ende des Einspannschaftes hin offenen Längsnut sowie zwei einander im wesentlichen diametral gegenüberliegenden, zum freien Ende des Einspannschaftes hin offenen Drehmitnahmenuten, die unterschiedliche Querschnitte mit verschieden grossen, radial nach aussen gerichteten Oeffnungsflächen haben.The invention relates to a tool for insertion into a tool holder for chiselling and / or impact drilling hand tool devices with a clamping shaft with at least one axially closed locking groove, at least one of the locking groove substantially diametrically opposite longitudinal groove open towards the free end of the clamping shaft and two essentially mutually diametrically opposite rotary driving grooves open towards the free end of the clamping shank, which have different cross-sections with differently sized, radially outward opening surfaces.
Entsprechend der DE-PS 25 51 125 sind heute weltweit in ausserordentlich grossem Umfange Werkzeuge verbreitet, deren Einspannschaft zwei einander diametral gegenüberliegende, axial geschlossene Verriegelungsnuten und zwei einander ebenfalls diametral gegenüberliegende, zum freien Ende des Einspannschaftes hin offene Drehmitnahmenuten aufweisen. Sowohl die Verriegelungsnuten untereinander als auch die Drehmitnahmenuten untereinander weisen gleiche Querschnitte auf.According to DE-PS 25 51 125, tools are widely used worldwide today, the clamping shank of which have two diametrically opposed, axially closed locking grooves and two diametrically opposed, rotational driving grooves open towards the free end of the clamping shank. Both the locking grooves with each other and the rotary driving grooves with each other have the same cross sections.
Zum Einsatz kommen die genannten Werkzeuge in Handwerkzeuggeräten, deren Werkzeugaufnahme zwei Mitnahmeleisten sowie ein oder zwei radial verschiebbare Verriegelungselemente aufweisen. Die Mitnahmeleisten sind zur Verbindung mit den Drehmitnahmenuten vorgesehen und dienen der Uebertragung des Drehmomentes. Die radial verschiebbaren Verriegelungselemente, welche als Kugeln oder Walzen ausgebildet sein können, treten in Verbindung mit den axial geschlossenen Verriegelungsnuten und dienen somit der axialen Festlegung der Werkzeuge in der Werkzeugaufnahme.The tools mentioned are used in hand tool devices, the tool holders of which have two carrier bars and one or two radially displaceable locking elements. The drive bars are provided for connection to the rotary drive grooves and serve to transmit the torque. The radially displaceable locking elements, which can be designed as balls or rollers, come into contact with the axially closed locking grooves and thus serve to axially fix the tools in the tool holder.
Da an die axiale Festlegung der Werkzeuge in der Werkzeugaufnahme nicht besonders hohe Anforderungen gestellt werden, ist nebst der Verwendung von zwei Verriegelungselementen in ausserordentlich starkem Umfange die Verwendung von nur einem Verriegelungselement verbreitet. Bei dieser axialen Festlegung geht es im wesentlichen darum, sicherzustellen, dass das Werkzeug sich nicht unbeabsichtigt aus der Werkzeugaufnahme löst, so dass insbesondere auf Baustellen durch herunterfallende Werkzeuge keine Gefahren entstehen. Darüber hinaus dient die axiale Festlegung dazu, dass das Werkzeug samt dem Handwerkzeuggerät nach Beendigung des Bearbeitungsvorganges vom Bauteil wieder entfernt werden kann.Since the axial fixing of the tools in the tool holder is not particularly demanding, in addition to the use of two locking elements, the use of only one locking element is extremely common. This axial fixing essentially involves ensuring that the tool does not unintentionally come loose from the tool holder, so that tools fall down on construction sites in particular no dangers arise. In addition, the axial fixing serves to allow the tool and the hand tool to be removed from the component again after the machining process has ended.
Im Zusammenhang mit der Uebertragung des Drehmomentes werden dagegen wesentlich höhere Anforderungen gestellt. Insbesondere aufgrund der laufend grösseren, zum Einsatz kommenden Arbeitsdurchmesser der Werkzeuge, samt der damit verbundenen Steigerung der Leistung der Handwerkzeuggeräte treten in zunehmendem Masse höhere, zu übertragende Drehmomente auf. Dies hat zur Folge, dass bei den Werkzeugen im Einspannschaft, insbesondere im Bereich der Drehmitnahmenuten ein vorzeitiger Verschleiss auftritt, welcher lange vor dem einsatzbedingten Verschleiss der übrigen Teile der Werkzeuge liegt.In connection with the transmission of the torque, however, much higher demands are made. In particular due to the continuously larger working diameters of the tools used, together with the associated increase in the performance of the hand tool devices, increasing torques to be transmitted are occurring to an increasing extent. The consequence of this is that the tools in the clamping shank, in particular in the area of the rotary driving grooves, experience premature wear, which is long before the use of the other parts of the tools due to use.
Zur Behebung der Problematik, insbesondere betreffend höherer, zu übertragender Drehmomente, wird gemäss DE-A-39 41 646 vorgeschlagen, eine der Drehmitnahmenuten mit einem grösseren Querschnitt zu versehen. Diese Massnahme ermöglicht die Vergrösserung der damit zusammenwirkenden Mitnahmeleiste der Werkzeugaufnahme, so dass insgesamt eine grössere Verschleissreserve erzielt wird.In order to remedy the problem, in particular with regard to higher torques to be transmitted, it is proposed according to DE-A-39 41 646 to provide one of the rotary driving grooves with a larger cross section. This measure makes it possible to enlarge the cooperating drive bar of the tool holder, so that overall a larger wear reserve is achieved.
Nebst der genannten Querschnittsvergrösserung wird gemäss DE-A-39 41 646 zur weiteren Steigerung der Verschleissreserve bei grösseren Drehmomenten zudem vorgeschlagen, anstelle der einen Verriegelungsnut eine zum freien Ende des Einspannschaftes hin offene Längsnut vorzusehen. Diese Längsnut ermöglicht das Vorsehen einer damit zusammenwirkenden Längsleiste in einer entsprechend ausgebildeten Werkzeugaufnahme, so dass eine zusätzliche Flanke für die Uebertragung des Drehmomentes zur Verfügung steht.In addition to the above-mentioned cross-sectional enlargement, according to DE-A-39 41 646, to further increase the wear reserve at higher torques, it is also proposed to provide a longitudinal groove which is open towards the free end of the clamping shaft instead of the one locking groove. This longitudinal groove makes it possible to provide a cooperating longitudinal bar in a suitably designed tool holder, so that an additional flank is available for the transmission of the torque.
Alle vorgenannten Massnahmen haben ihre Berechtigung und ihre Vorteile bei Verwendung der Werkzeuge in dafür abgestimmten Werkzeugaufnahmen. Wie eingangs geschildert, darf jedoch nicht ausser acht gelassen werden, dass aufgrund der bisher verwendeten Werkzeuge Handwerkzeuggeräte weltweit stark verbreitet sind, deren Aufnahme zwei Mitnahmeleisten gleichen Querschnitts und ein oder zwei radial verschiebbare Verriegelungselemente aufweist. Somit ist es eine wichtige Aufgabe, neue, für höhere Drehmomente ausgelegte Werkzeuge so auszubilden, dass sie mit den Werkzeugaufnahmen der heute sich noch am Markt befindlichen Handwerkzeuggeräte kompatibel sind, wenn auch unter Vernachlässigung der mit den neuen Werkzeugen erzielten Vorteile.All of the above measures have their justification and their advantages when using the tools in coordinated tool holders. As described at the beginning, however, it should not be forgotten that, because of the tools used to date, hand tool devices are very widespread worldwide, the holder of which has two drive bars of the same cross section and one or two radially displaceable locking elements. It is therefore an important task to design new tools designed for higher torques in such a way that they are compatible with the tool holders of the hand tool devices still on the market today, even if the advantages achieved with the new tools are neglected.
Ein gravierender Nachteil des vorgenannten, mit einer Längsnut im Einspannschaft versehenen Werkzeuges besteht darin, dass es in Handwerkzeuggeräten, deren Werkzeugaufnahme zwei Verriegelungselemente aufweist, nicht einsetzbar ist, da das zweite Verriegelungselement nicht in die Längsnut eintreten kann. Wird das Werkzeug dagegen in einer Werkzeugaufnahme mit nur einem Verriegelungselement verwendet, besteht bei Mitnahmeleisten gleicher Querschnitte die Möglichkeit des Einführens um 180° verdreht. Aufgrund der vorhandenen Spiele bzw. der federnden Lagerung der Verriegelungselemente lassen sich die Mittel für radiale Verschiebung trotzdem betätigen, so dass die Verriegelungselemente mit dem Einspannschaft in einen zum Teil recht starken Reibschluss treten. Für die Bedienungsperson ist diese Fehlverriegelung nicht ohne weiteres erkennbar, da der Reibschluss selbst der an sich üblichen Kontrollbewegung zur Erkennung der axialen Festlegung standhält. Das unbeabsichtigte Lösen der axialen Festlegung des Werkzeuges in der Werkzeugaufnahme tritt somit völlig unvorhergesehen und ungewollt im Einsatzfalle auf, so dass Unfälle nicht ausgeschlossen sind.A serious disadvantage of the aforementioned tool, which is provided with a longitudinal groove in the clamping shank, is that it cannot be used in hand tool devices, the tool holder of which has two locking elements, since the second locking element cannot enter the longitudinal groove. If, on the other hand, the tool is used in a tool holder with only one locking element, there is the possibility of insertion rotated by 180 ° with drive strips of the same cross-section. Due to the existing games or the resilient mounting of the locking elements, the means for radial displacement can still be actuated, so that the locking elements come into contact with the clamping shaft in a sometimes very strong frictional engagement. This incorrect locking is not readily recognizable for the operator, since the frictional engagement itself withstands the control movement, which is conventional per se, for recognizing the axial fixing. The unintentional loosening of the axial fixation of the tool in the tool holder thus occurs completely unforeseen and unintentionally in the event of an accident, so that accidents cannot be ruled out.
Der Erfindung liegt demnach die Aufgabe zugrunde, ein Werkzeug zu schaffen, das zur Uebertragung grosser Drehmomente in entsprechend ausgebildeten Werkzeugaufnahmen geeignet ist und eine Anwendung in herkömmlichen Werkzeugaufnahmen ermöglicht, dort aber eine allfällige Fehlverriegelung ausreichend erkennen lässt.The invention is therefore based on the object of providing a tool which is suitable for transmitting high torques in appropriately designed tool holders and which enables use in conventional tool holders, but which can sufficiently detect any incorrect locking there.
Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass die axiale Projektionsfläche des lichten Querschnitts der Längsnut wenigstens der axialen Projektionsfläche des lichten Querschnitts der Verriegelungsnut entspricht.According to the invention, the object is achieved in that the axial projection surface of the clear cross section of the longitudinal groove corresponds at least to the axial projection surface of the clear cross section of the locking groove.
Das Werkzeug mit dem erfindungsgemässen Einspannschaft lässt sich in herkömmliche Werkzeugaufnahmen mit zwei Verriegelungselementen ohne Probleme einführen. Wird dieses Werkzeug in herkömmliche Werkzeugaufnahmen mit nur einem Verriegelungselement richtig eingeführt, kommt eine ausreichende axiale Festlegung zustande. Wird das Werkzeug dagegen in einer solchen Werkzeugaufnahme um 180° verdreht falsch eingeführt, tritt das Verriegelungselement ohne weitere Behinderung vollumfänglich in den lichten Querschnitt der Längsnut ein, kommt dort aber nicht zur Anlage mit irgendwelchen Umfangsteilen des Einspannschaftes. Es kommt dadurch keine Verbindung in irgendeiner Art zwischen Einspannschaft und Verriegelungselement zustande, so dass es für die Bedienungsperson durch Nichtzustandekommen der axialen Festlegung oder allerspätestens beim ohnehin üblichen Kontrollgriff erkennbar ist, dass das Werkzeug falsch in die Werkzeugaufnahme eingesetzt worden ist. Es ist damit völlig ausgeschlossen, dass die Bedienungsperson mit einem falsch eingesetzten Werkzeug die Bearbeitung von Bauteilen aufnimmt.The tool with the clamping shank according to the invention can be inserted into conventional tool holders with two locking elements without problems. If this tool is correctly inserted into conventional tool holders with only one locking element, sufficient axial fixing is achieved. If, on the other hand, the tool is incorrectly inserted rotated by 180 ° in such a tool holder, the locking element will fully enter the clear cross section of the longitudinal groove without further hindrance, but will not come into contact with any circumferential parts of the clamping shaft. As a result, there is no connection of any kind between the clamping shank and the locking element, so that the operator can recognize that the tool has been incorrectly inserted into the tool holder due to the axial fixing not being achieved or at the latest when the control handle is used anyway. It is therefore completely out of the question for the operator to start machining components with the wrong tool.
In bevorzugter Weise entspricht die axiale Projektionsfläche des lichten Querschnitts der Längsnut der axialen Projektionsfläche des lichten Querschnitts der Verriegelungsnut. Dabei bietet es sich zweckmässigerweise an, bezogen auf die Symmetrieachse der Drehmitnahmenuten die Längsnut achssymmetrisch zur Verriegelungsnut auszubilden.The axial projection surface of the clear cross section of the longitudinal groove preferably corresponds to the axial projection surface of the clear cross section of the locking groove. In this case, it is expedient to design the longitudinal groove axially symmetrical with respect to the locking groove with respect to the axis of symmetry of the rotary driving grooves.
Im Hinblick auf die Anwendung findenden rotationssymmetrischen Verriegelungskörper, wie Kugeln oder Zylinder ist vorteilhafterweise die Längsnut muldenförmig ausgebildet. Unter muldenförmig wird dabei eine Längsnut verstanden, deren Boden im Querschnitt gesehen den Anwendung findenden, rotationssymmetrischen Verriegelungskörpern angepasst ist.With regard to the use of rotationally symmetrical locking bodies, such as balls or cylinders, the longitudinal groove is advantageously trough-shaped. Trough-shaped is understood to mean a longitudinal groove, the bottom of which, viewed in cross section, is adapted to the rotationally symmetrical locking bodies used.
Gemäss einer weiteren Ausführungsform der Erfindung kann die axiale Projektionsfläche des lichten Querschnitts der Längsnut die axiale Projektionsfläche des lichten Querschnitts der Verriegelungsnut übersteigen. Dadurch eröffnen sich Möglichkeiten verschiedenartiger Ausbildung, insbesondere im Hinblick auf das Zusammenwirken mit entsprechend ausgebildeten Längsleisten neuer Werkzeugaufnahmen.According to a further embodiment of the invention, the axial projection area of the clear cross section of the longitudinal groove can exceed the axial projection area of the clear cross section of the locking groove. This opens up possibilities of various types of training, in particular with regard to the interaction with appropriately designed longitudinal strips of new tool holders.
Vorzugsweise weist die Längsnut wenigstens eine, im wesentlichen radial verlaufende Flanke auf. Im Hinblick auf das zu übertragende Drehmoment ist es dabei zweckmässig, wenn die mitnahmeseitige Flanke der Längsnut im wesentlichen radial verläuft. Die übrigen Flanken können verschiedenartig verlaufen, beispielsweise sehnenartig oder ebenfalls radial.The longitudinal groove preferably has at least one essentially radially extending flank. In view of the torque to be transmitted, it is expedient if the flank of the longitudinal groove on the driving side runs essentially radially. The other flanks can run in different ways, for example tendon-like or also radially.
Wie bereits darauf hingewiesen, geht es beim erfindungsgemässen Werkzeug zum einen darum, dass es in die sich in grossem Umfange am Markt verbreiteten Handwerkzeuggeräte einsetzbar ist. Die weitere Aufgabe besteht aber darin, das Werkzeug so auszubilden, dass es auch zur Uebertragung grösserer Drehmomente geeignet ist. Diese letztere Aufgabe lässt sich lösen durch eine entsprechend ausgebildete Werkzeugaufnahme, welche mindestens ein mit der axial geschlossenen Verriegelungsnut zusammenwirkendes, radial verschiebbares Verriegelungselement, zwei mit den Drehmitnahmenuten zusammenwirkende Mitnahmeleisten, die durch unterschiedliche Breite mit unterschiedlichen Querschnitten versehen sind, sowie mindestens eine mit der Längsnut zusammenwirkende Längsleiste aufweist.As already pointed out, the tool according to the invention is, on the one hand, that it can be used in the hand tool devices which are widely used on the market. However, the further task is to design the tool in such a way that it is also suitable for the transmission of larger torques. This latter task can be solved by a suitably designed tool holder, which has at least one radially displaceable locking element interacting with the axially closed locking groove, two driving bars interacting with the rotary driving grooves, which are provided with different cross sections due to different widths, and at least one interacting with the longitudinal groove Has longitudinal bar.
Durch die erfindungsgemäss ausgebildete breitere Ausbildung einer Mitnahmeleiste steht mehr Verschleissreserve zur Verfügung. Darüber hinaus wird durch die Längsleiste eine weitere, der Drehmomentübertragung dienende Flanke geschaffen.As a result of the wider design of a driving bar designed according to the invention, more wear reserve is available. In addition, a further flank serving for torque transmission is created by the longitudinal bar.
Die Erfindung wird nachstehend, anhand der sie beispielsweise wiedergebenden Zeichnungen, näher erläutert. Es zeigen:
- 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.
- Fig. 1
- a section through a clamping shaft of the tool according to the invention;
- Fig. 2
- a section through the clamping shank of a further tool according to the invention;
- Fig. 3
- a section through a tool holder shown in simplified form with a tool that has a clamping shaft according to FIG. 1.
Das in Fig. 1 dargestellte Werkzeug weist einen Einspannschaft 1 auf. Einander diametral gegenüberliegend weist der Einspannschaft 1, zwei Drehmitnahmenuten 2, 3 auf, wobei die Drehmitnahmenut 3 einen grösseren Querschnitt mit einer grösseren, radial nach aussen gerichteten Oeffnungsfläche besitzt. Darüber hinaus ist eine axial geschlossene Verriegelungsnut 4 vorgesehen. Dieser Verriegelungsnut 4 ist diametral gegenüberliegend eine muldenförmige Längsnut 5 angeordnet, welche zum freien Ende des Einspannschaftes 1 hin offen ist.The tool shown in FIG. 1 has a clamping shank 1. Diametrically opposite one another, the clamping shank 1 has two
Das Werkzeug gemäss Fig. 2 weist einen Einspannschaft 6 auf, der mit zwei einander diametral gegenüberliegenden Drehmitnahmenuten 7, 8 versehen ist. Dabei weist die Drehmitnahmenut 8 einen grösseren Querschnitt mit einer grösseren radial nach aussen gerichteten Oeffnungsfläche auf. Ferner ist eine axial geschlossene Verriegelungsnut 9 vorgesehen, welcher diametral eine Längsnut 10 gegenüberliegt. Die axiale Projektionsfläche des lichten Querschnitts der Längsnut 10 übersteigt die axiale Projektionsfläche des lichten Querschnitts der Verriegelungsnut 9. Zur optimalen Drehübertragung ist ferner wenigstens die mitnahmeseitige Flanke 10a der Längsnut 10 im wesentlichen radial vertaufend ausgebildet, wobei es sich beispielhaft beim vorliegenden Einspannschaft 6 um eine symmetrisch ausgebildete Längsnut 10 mit beidseits radial verlaufenden Flanken handelt.The tool according to FIG. 2 has a clamping shank 6 which is provided with two
Fig. 3 zeigt einen Schnitt durch eine vereinfacht dargestellte Werkzeugaufnahme` in welche ein Werkzeug mit einem Einspannschaft 1 entsprechend Fig. 1 eingesetzt ist. Die Werkzeugaufnahme besteht im wesentlichen aus einer Führung 11, einer Betätigungshülse 12 sowie einem Käfig 13. Die Führung 11 weist zwei einander diametral gegenüberliegende Mitnahmeleisten 11a, 11b auf. Dabei ist die Mitnahmeleiste 11b gegenüber der Mitnahmeleiste 11a mit einem grösseren Querschnitt mit grösserer Breite versehen. Ferner weist die Führung 11 eine Mitnahmeleiste 11c auf, die im vorliegenden Beispiel im Querschnitt gesehen kuppenförmig ausgebildet ist. Zur axialen Festlegung des Werkzeuges ist zudem ein radial verschiebbares Verriegelungselement 14 in Form einer Kugel vorgesehen.FIG. 3 shows a section through a tool holder shown in simplified form, into which a tool with a clamping shank 1 corresponding to FIG. 1 is inserted. The tool holder essentially consists of a
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4403303A DE4403303A1 (en) | 1994-02-03 | 1994-02-03 | Tool and tool holder for hand tools |
| DE4403303 | 1994-02-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0666147A1 true EP0666147A1 (en) | 1995-08-09 |
| EP0666147B1 EP0666147B1 (en) | 1999-08-25 |
Family
ID=6509378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94810732A Expired - Lifetime EP0666147B1 (en) | 1994-02-03 | 1994-12-16 | Tool and tool holding fixture for implements |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5529445A (en) |
| EP (1) | EP0666147B1 (en) |
| JP (1) | JPH07223174A (en) |
| CN (1) | CN1112865A (en) |
| DE (2) | DE4403303A1 (en) |
| DK (1) | DK0666147T3 (en) |
| FI (1) | FI950414L (en) |
| HU (1) | HU216379B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4338953A1 (en) * | 1993-11-15 | 1995-05-18 | Krupp Widia Gmbh | Clamping device for connecting a tool head and a tool holder on machine tools |
| CZ287520B6 (en) * | 1994-01-14 | 2000-12-13 | Bosch Gmbh Robert | Mechanism of hand-held cutting device for rotary driving of impact and/or drilling tools, a tool and a tool holder |
| DE20204416U1 (en) * | 2002-03-19 | 2002-07-11 | Gebrüder Heller Dinklage GmbH, 49413 Dinklage | Tool for a hand machine tool |
| ATE460255T1 (en) * | 2003-11-26 | 2010-03-15 | Hilti Ag | TOOL HOLDER FOR A ROTATING AND IMPACTING TOOL |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2551125A1 (en) * | 1975-11-14 | 1977-05-26 | Bosch Gmbh Robert | DEVICE FOR TORQUE TRANSMISSION |
| DE3941646A1 (en) * | 1989-12-16 | 1991-06-20 | Heller Werkzeug Gmbh Geb | IMPACT DRILLING TOOL AND TOOL ADAPTER FOR IMPACT DRILLING TOOLS |
| EP0551795A1 (en) * | 1992-01-13 | 1993-07-21 | HILTI Aktiengesellschaft | Tool for impact drilling and chiseling and chuck therefor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4137120A1 (en) * | 1991-11-12 | 1993-05-13 | Hilti Ag | IMPACT DRILLING TOOL AND TOOL ADAPTER FOR IMPACT DRILLING TOOLS |
| DE4210451A1 (en) * | 1992-03-30 | 1993-10-07 | Plica Werkzeugfabrik Ag Mollis | Torque transmission device |
-
1994
- 1994-02-03 DE DE4403303A patent/DE4403303A1/en not_active Withdrawn
- 1994-12-16 EP EP94810732A patent/EP0666147B1/en not_active Expired - Lifetime
- 1994-12-16 DK DK94810732T patent/DK0666147T3/en active
- 1994-12-16 DE DE59408658T patent/DE59408658D1/en not_active Expired - Lifetime
-
1995
- 1995-01-27 CN CN95101642A patent/CN1112865A/en active Pending
- 1995-01-31 FI FI950414A patent/FI950414L/en unknown
- 1995-02-02 US US08/382,726 patent/US5529445A/en not_active Expired - Fee Related
- 1995-02-02 HU HU9500315A patent/HU216379B/en not_active IP Right Cessation
- 1995-02-02 JP JP7016031A patent/JPH07223174A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2551125A1 (en) * | 1975-11-14 | 1977-05-26 | Bosch Gmbh Robert | DEVICE FOR TORQUE TRANSMISSION |
| DE3941646A1 (en) * | 1989-12-16 | 1991-06-20 | Heller Werkzeug Gmbh Geb | IMPACT DRILLING TOOL AND TOOL ADAPTER FOR IMPACT DRILLING TOOLS |
| EP0551795A1 (en) * | 1992-01-13 | 1993-07-21 | HILTI Aktiengesellschaft | Tool for impact drilling and chiseling and chuck therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| FI950414A0 (en) | 1995-01-31 |
| DE4403303A1 (en) | 1995-08-10 |
| HU9500315D0 (en) | 1995-03-28 |
| EP0666147B1 (en) | 1999-08-25 |
| DK0666147T3 (en) | 2000-02-07 |
| CN1112865A (en) | 1995-12-06 |
| HU216379B (en) | 1999-06-28 |
| US5529445A (en) | 1996-06-25 |
| HUT69578A (en) | 1995-09-28 |
| JPH07223174A (en) | 1995-08-22 |
| DE59408658D1 (en) | 1999-09-30 |
| FI950414L (en) | 1995-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0500489B1 (en) | Tool and toolholder for hand held machine | |
| EP0598208B1 (en) | Selfclamping drill chuck | |
| DE4340726C1 (en) | Device on powered hand tools for the rotary driving of tools | |
| DE2500216B2 (en) | Tool for cutting out discs from sheet metal or the like | |
| DE10044387A1 (en) | Tool holder for a hand machine tool | |
| EP0605602A1 (en) | Device fitted on hand power tools. | |
| EP0109666A1 (en) | Hand tool with depth adjuster | |
| EP0614731B1 (en) | Tool and toolchuck for handtools | |
| DE4401663A1 (en) | Tool holder | |
| EP0768151B1 (en) | Tool holder | |
| DE2823104C2 (en) | Disc cutter | |
| EP0742082B1 (en) | Device for torque transmission for hand tools | |
| EP0739267A1 (en) | Device on hand machine tools for rotary tool drive | |
| EP0563727B1 (en) | Device for torque transmission | |
| DE4400969A1 (en) | Device on hand-held machine tools for turning tools | |
| DE2346323A1 (en) | HANDPIECE, IN PARTICULAR FOR DENTAL PURPOSES | |
| EP0666147B1 (en) | Tool and tool holding fixture for implements | |
| EP0565482B1 (en) | Tool and toolholder for handtools | |
| EP0662370A1 (en) | Tool and tool holder for hand-held machine tools | |
| DE3432918A1 (en) | TENSIONING DRILL CHUCK | |
| EP0665088A1 (en) | Tool and check for hand tool | |
| EP0657253A2 (en) | Tool and tool chuck for hand tools | |
| DE10206164B4 (en) | clamping | |
| EP0579580B1 (en) | Tool and chuck for a portable tool | |
| EP0662369A1 (en) | Tool and tool holder for hand-held machine tools |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE DK FR GB IT LI NL SE |
|
| 17P | Request for examination filed |
Effective date: 19950824 |
|
| 17Q | First examination report despatched |
Effective date: 19970522 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| ITF | It: translation for a ep patent filed | ||
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE DK FR GB IT LI NL SE |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 59408658 Country of ref document: DE Date of ref document: 19990930 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19991025 Year of fee payment: 6 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19991028 |
|
| ET | Fr: translation filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19991206 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19991231 Year of fee payment: 6 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001216 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001217 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010701 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20001216 |
|
| EUG | Se: european patent has lapsed |
Ref document number: 94810732.1 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20010701 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20051215 Year of fee payment: 12 Ref country code: CH Payment date: 20051215 Year of fee payment: 12 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051216 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061231 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070102 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20101117 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20111219 Year of fee payment: 18 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20130830 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130702 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59408658 Country of ref document: DE Effective date: 20130702 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130102 |