EP2639402A2 - Round shaft bit with a retaining sleeve - Google Patents
Round shaft bit with a retaining sleeve Download PDFInfo
- Publication number
- EP2639402A2 EP2639402A2 EP13171907.2A EP13171907A EP2639402A2 EP 2639402 A2 EP2639402 A2 EP 2639402A2 EP 13171907 A EP13171907 A EP 13171907A EP 2639402 A2 EP2639402 A2 EP 2639402A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- chisel
- region
- bit
- support element
- guide
- 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.)
- Ceased
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/19—Means for fixing picks or holders
- E21C35/197—Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/188—Mining picks; Holders therefor characterised by adaptations to use an extraction tool
Definitions
- the invention relates to a chisel, in particular round shank chisel with a chisel head and a chisel shank, wherein in the region of the chisel shank a fastening sleeve is held and having a support member having a guide portion, wherein the support member has on its underside a projecting spigot.
- the fastening sleeve is designed as a clamping sleeve, which is formed from a resilient material, such as steel sheet. It has a longitudinal slot which is bounded by sleeve edges.
- the longitudinal slot of the mounting sleeve diameter can be varied, with the sleeve edges to move toward each other (small diameter) or spaced from each other (large diameter sleeve). In this way, different clamping states can be achieved.
- On the mounting sleeve which is designed as a wear protection disc Mounted supporting element. This support member has a circular cross-section and is penetrated by a bore.
- the bore is dimensioned such that the fastening sleeve is held in a bias state with reduced outer diameter relative to its relaxed state.
- the outer diameter thus produced is selected such that the clamping sleeve can be inserted with little or no effort in a bit holder of a chisel holder.
- the insertion movement is limited by means of the support element.
- the support member Upon further insertion of the drill collar in the bore, the support member is moved in a non-covered by the clamping sleeve portion of the drill collar. Then, the fastening sleeve jumps radially and clamped in the bore of the chisel holder.
- the round shank bit is axially captive, but freely rotatably supported in the circumferential direction.
- To disassemble the chisel it is driven out of the chisel holder by means of a mandrel acting on the back of the chisel shaft.
- a wear shield is also used as a support member which holds the mounting sleeve in a bias state.
- the support element may be in the direction of the chisel head to be shifted until the mounting sleeve rebounds radially. Then, the support member engages with projections in receptacles of the mounting sleeve, whereby a non-rotatable mounting between the mounting sleeve and the support element is formed.
- Such non-rotatable bearings have proven to be disadvantageous because they cause increased and uneven wear.
- a chisel in which also a support member can be deported from a mounting sleeve.
- the support element comes to lie between the chisel head and the free end of the mounting sleeve.
- the support member has on its side facing the mounting sleeve on a circumferential projection.
- the centering approach has a centering surface inclined to the central longitudinal axis of the bit, which merges via a recessed recess in a circumferential side surface extending radially to the central longitudinal axis.
- a centered alignment of the support member relative to the bit holder can be achieved in that the support member has on its underside a projecting spigot. This can intervene in a centering of the chisel holder. Between centering and centering a kind of seal is again formed, which prevents penetration of space material.
- the support element has a deflection section in the region of its underside facing away from the bit head.
- the fastening sleeve can be brought into operative connection with the deflection section.
- the fastening sleeve is brought into the fastening sleeve section formed by the guide region.
- the mounting sleeve is then again in a clamping state that allows easier removal of the bit from the bit holder.
- this clamping state then also makes it possible to use the chisel for reuse without or with little effort in a chisel holder.
- the bit for the initial assembly is already configured such that the guide portion holds the mounting sleeve in a clamping state.
- the fastening sleeve can be moved by means of the deflection section from a relaxed position into a clamping position. This is for example advantageous if the support member of the mounting sleeve was unintentionally deported and is in his chisel head facing working position. Then, by means of the deflection section, a mounting position can easily be restored by pushing the support element onto the fastening sleeve.
- the deflection section can also serve to bring the fastening sleeve from a partial clamping position into a clamping position.
- the partial clamping position is usually present when the bit is mounted in the bit holder and acts with a residual clamping force on the bore wall of the bit holder.
- a conceivable variant of the invention is such that the support element has an insertion region which is indirectly or directly transferred into the deflection section.
- the fastening sleeve can then be threaded into the insertion region with a section facing the support element and brought into the deflection section via the latter. It has proved to be particularly advantageous if it is provided that the fastening sleeve has a guide which is held in the region of the insertion. Then a spatial assignment of the mounting sleeve is already made in the mounting position to the support element.
- mounting sleeve and support element Due to this overlap between mounting sleeve and support element creates a labyrinth-like closure, which reduces the risk of ingress of dirt. In this way, the rotational behavior between the bit and the support element is improved. It is also conceivable that the guide is in the axial direction of the bit at a distance from the insertion. Then, the insertion should be dimensioned so that the leadership of the mounting sleeve can be reliably inserted during disassembly. In particular, wear-related deformations, for example, of the fastening sleeve in its region facing the support element are also to be taken into account.
- a particularly preferred embodiment of the invention is such that a centering section is arranged in the transition area of the bit head in the bit shaft, which is formed on its outer periphery such that it forms a pivot bearing together with the guide region.
- the pivotal mounting allows the support member to rotate independently of the mounting sleeve. This achieves a wear-optimized design of the entire chisel.
- this pivotal mounting results in a centered alignment of the bit with respect to the support element, which leads to the improvement of the milling result and to the reduction of rotary wear.
- a chisel according to the invention may be such that the support element has on its upper side facing the chisel head an importer extension which merges directly or indirectly into the guide region.
- This introducer upgrade simplifies the initial assembly of the bit. First, the mounting sleeve is placed on the drill collar. Then, the support member is pushed onto the relaxed mounting sleeve, the Ein mecanicweittation serves as Einfädel Anlagen.
- a particularly simple construction results from the fact that the guide region and the insertion region are each formed by a bore, and that the bore forming the insertion region has a larger diameter than the bore forming the guide region.
- the support member is fixed against rotation relative to the bit holder, as this then can work unevenly due to impact stresses in the facing bearing surface of the bit holder. For this reason, a relative mobility of the support element relative to the bit holder should be maintained.
- the support element is at its radially outer circumferential region according to a variant of the invention provided with recesses. These recesses form attack areas for removed space material, which then introduces a circumferential force in the support element. It thus induces a rotational movement of the support element.
- a further wear-optimized chisel design is achieved if it is provided that the centering projection has a centering surface which extends inclined to the central longitudinal axis of the chisel and which passes over a recessed recess into a peripheral seat surface running radially to the central longitudinal axis.
- the recessed recess forms a kind of stress relieving throat.
- this recess exposes the associated edge region of the bit holder, which leads to an improved free rotation.
- An inventive chisel may be characterized in that the fastening sleeve has one or more holding elements which engage in a circumferential groove of the chisel shank to form a rotary bearing. In this way, the free rotation of the bit with respect to the mounting sleeve is guaranteed in the circumferential direction. It is particularly advantageous if it is provided that the holding elements are separated from the mounting sleeve along two, extending in the circumferential direction, separating edges, and that the separating edges of the holding elements in each case opposite the groove side walls of the groove. The holding elements can be very accurately punched out of the sleeve material and tuned to the groove width.
- the FIG. 1 shows a chisel 10, which is designed as a round shank chisel. It has a drill collar 11, which essentially forms a cylindrical geometry. In the drill collar a circumferential groove 15 is introduced.
- the drill collar 11 is connected to a chisel head 13 via a centering section 12.
- the chisel head 13 has at its end facing away from the chisel shank 11 a chisel tip 14 consisting of hard material, such as hard metal, on.
- a cup is incorporated into the end of the chisel head 13, into which the chisel tip 14 is soldered.
- FIG. 1 shows a chisel 10, which is designed as a round shank chisel. It has a drill collar 11, which essentially forms a cylindrical geometry. In the drill collar a circumferential groove 15 is introduced.
- the drill collar 11 is connected to a chisel head 13 via a centering section 12.
- the 1 can recognize, has the chisel head 13 in the connection region to the centering 12 a collar 13.2.
- the collar 13.2 forms a downward bearing surface 13.1.
- the bit 10 is formed with its chisel shank 11, its chisel head 13 and its chisel tip 14 rotationally symmetrical to the running through the chisel tip 14 center longitudinal axis.
- a fastening sleeve 20 is arranged in the area of the chisel shank 11.
- the fastening sleeve 20 is made of a sheet material, such as steel sheet. In this case, holding elements 21 are punched free from the sheet material and expressed in the area enclosed by the fastening sleeve 20 area.
- the holding elements 21 are thereby cut free along two punched edges, which extend in the circumferential direction of the fastening sleeve 20.
- the fastening sleeve 20 is rolled in such a way that a circular cross-section results, leaving a clamping slot 23.
- a support member 30 On the mounting sleeve 20, a support member 30 is pushed.
- the support member 30 is disc-shaped.
- the configuration of the support member 30 will be described with reference to FIGS FIG. 3 explained in more detail.
- the support member 30 on its side facing the chisel head side a cup-shaped recess 31 into which the chisel head 13 can be adjusted with its collar 13.2.
- the chisel head 13 lies with its bearing surface 13.1 on a facing support surface 31.1 of the recess 31 plan.
- the support member 30 has a seat surface 33 which is arranged plane parallel to the support surface 31.1. This seat surface 33 merges via a recess 35 into a centering shoulder 34.
- the recess 35 is formed in a hollow-chevron shape in order to achieve a voltage-optimized transition.
- the adjoining the recess 35 centering of the spigot 34 is disposed inclined to the central longitudinal axis of the bit 10 and extends as well as the seat 33 annularly about the central longitudinal axis of the bit 10 to.
- a bore is incorporated centrally in the support member 30, which forms a guide portion 36.
- the insertion region 36 passes over a rounded-out Ein mecanicweittation 36.3 in the support surface 31.1.
- a deflection section 36.1 is formed by a draft which is inclined relative to the central longitudinal axis of the bit 10 or the central longitudinal axis of the support element 30. This passion can be formed by a linear section or by a curved section.
- An insertion region 36.2 adjoins the deflection section 36.1.
- the insertion region 36.2 is in turn formed by a bore, wherein the bore diameter is greater than the diameter of the bore 36 producing the guide portion. About the deflection section 36.1 of the insertion 36.2 is transferred to the guide portion 36.
- the chisel head 13 is inserted with its collar 13.2 in the recess 31 of the support member 30.
- the centering section 12 of the drill collar 11 is assigned to the guide region 36.
- the play between these two components should be chosen so that the smallest possible lateral offset (transverse to the central longitudinal axis of the bit (10)) is formed.
- FIG. 3 shows that the drill collar 11 has a rounded portion 12.1, which leads from a diameter-reduced shaft portion in the enlarged diameter portion of the centering portion 12.
- the fastening sleeve 20 is arranged in the diameter-reduced area.
- the support member 30 facing end portion of the mounting sleeve 20 forms an end guide 22.
- This guide 22 is closed with a chamfer 22.1.
- the guide 22 is arranged in the region of the insertion region 36.2. The assignment is made such that between the outer wall of the mounting sleeve 20 and the insertion 36.2 a game remains. This clearance should be greater than the clearance between the centering portion 12 and the guide portion 36, so that contact between the mounting sleeve 20 and the support member 30 is avoided in the mounting position.
- the centering 12 and the guide portion 36 takes over the unique pivot bearing.
- the support member 30 is shown again in isolation.
- the recess 31 is bounded by a peripheral edge 31.2, are incorporated in the recesses 32.
- the recesses 32 are designed as radially extending grooves.
- the representation after FIG. 4 also shows that the support member 30 is formed rotationally symmetrical to its central longitudinal axis.
- the bit holder 40 has a base portion 41 to which a male tab 42 protruding on the underside is formed.
- the base member 41 also carries a one-piece molded retaining lug 43, in which a bit holder 46 is introduced as a cylindrical bore.
- the bit receptacle 46 is designed as a through hole, which is open at its two longitudinal ends.
- the plug projection 42 remote from the end of the bit holder 46 opens into a cylindrical portion 44 of the retaining projection 43.
- This cylindrical portion 44 has an annular bearing surface on which the seat surface 33 of the support member 30 is placed.
- the centering projection 34 of the support member 30 is inserted into a correspondingly shaped centering of the chisel holder 40.
- FIG. 6 further shows that the Einstattweit für 36.3 of the support member 30 is formed such that the associated edge region between the collar 13.2 and the centering 12 is free (throat 12.2), so that a good rotation of the bit 10 relative to the support member 30 is maintained. Furthermore, the leaves FIG. 6 recognize that the recess 35 releases the associated edge region of the chisel holder 40, so that the planar support of the seat surface 33 is guaranteed on the associated support surface of the chisel holder 40.
- a disassembly tool For disassembly of the bit 10 from the bit holder 40, a disassembly tool, as already mentioned above, can be used.
- This disassembly tool has a support section, which is supported on the edge 31.2 of the support element 30 at the front.
- An expelling mandrel of this tool can be moved back through the bit receptacle 46 so that it acts on the free end of the drill collar 11 and pushes it out of the bit receptacle 46.
- the support portion of the expelling tool holds the support member 30 in position.
- the guide 22 of the fastening sleeve 20 is pushed into the region of the deflection section 36.1 of the support element 30.
- the deflection section 36.1 then biases the end of the fastening sleeve 20 formed by the guide 22 radially inwards, a diameter reduction of the fastening sleeve 20 being achieved at least in this area.
- the fastening sleeve 20 passes with its jacket area in the guide portion 36 of the support member 30. This sliding movement can be continued until, for example, in the FIG. 1 achieved position of the support member 30 is made. Then the bit 10 can be lifted with little or no effort from the bit holder 46. He is then available for a new assembly.
Abstract
Description
Die Erfindung betrifft einen Meißel, insbesondere Rundschaftmeißel mit einem Meißelkopf und einem Meißelschaft, wobei im Bereich des Meißelschaftes eine Befestigungshülse gehalten ist und mit einem Stützelement, das einen Führungsbereich aufweist, wobei das Stützelement an seiner Unterseite einen vorstehenden Zentrieransatz aufweist.The invention relates to a chisel, in particular round shank chisel with a chisel head and a chisel shank, wherein in the region of the chisel shank a fastening sleeve is held and having a support member having a guide portion, wherein the support member has on its underside a projecting spigot.
Ein derartiger Meißel ist aus der
Es gibt nun Anwendungsfälle, bei denen der Meißel, dann, wenn er teilverschlissen ist, nicht mehr für bestimmte Fräsaufgaben verwendet werden kann. Dann wird er ausgebaut und es werden neue unverschlissene Meißel eingebaut. Die teilverschlissenen Meißel eignen sich dann aber noch für grobe Bearbeitungsaufgaben. Da das Stützelement aber bereits von der Befestigungshülse abgeschoben ist, gestaltet sich die Montage dann komplizierter. Es kommen separate Spannwerkzeuge zum Einsatz, mit denen die Spannhülse zangenartig vorgespannt werden kann. Der Meißel lässt sich dann ohne Kraftaufwand in die Meißelaufnahme einsetzen. Das Spannwerkzeug wird in einem teileingesetzten Zustand des Meißels abgenommen und der Meißel dann mit einem Hammer komplett in die Meißelaufnahme eingeschlagen.There are now applications in which the bit, when it is partially worn, can not be used for certain milling tasks. Then it is removed and new unsoldered chisels are installed. The partially worn chisels are then still suitable for rough machining tasks. But since the support element is already deported from the mounting sleeve, the assembly is then complicated. There are separate clamping tools are used, with which the clamping sleeve can be biased like a pliers. The chisel can then be used without effort in the bit holder. The chuck is removed in a partially inserted state of the chisel and then the chisel hammered completely into the chisel holder with a hammer.
Aus der
In der
Es ist Aufgabe der Erfindung, einen Meißel der eingangs erwähnten Art zu schaffen, der verschleißoptimiert ausgelegt ist.It is an object of the invention to provide a chisel of the type mentioned, which is designed wear-optimized.
Diese Aufgabe wird dadurch gelöst, dass der Zentrieransatz eine zur Mittellängsachse des Meißels geneigt verlaufende Zentrierfläche aufweist, die über eine zurückversetzte Ausnehmung in eine radial zur Mittellängsachse verlaufende, umlaufende Seitenfläche übergeht.This object is achieved in that the centering approach has a centering surface inclined to the central longitudinal axis of the bit, which merges via a recessed recess in a circumferential side surface extending radially to the central longitudinal axis.
Ein wesentliches Konstruktionskriterium bei Meißeln ist, wie bereits vorstehend erwähnt, die verschleißoptimierte Auslegung. Dabei soll ein möglichst geringer Verschleiß an dem kostenintensiven Meißelhalter auftreten, in den der Meißel eingesetzt ist. Daher ist es vorteilhaft, wenn das Stützelement gegenüber dem Meißelhalter möglichst wenig drehenden Verschleiß ausübt. Gleichzeitig soll jedoch der Meißel möglichst gut drehen, damit er über seinem Gesamtumfang gleichmäßig abgenutzt wird. Um dies zu gewährleisten, vorgesehen, dass das Stützelement an seiner Oberseite eine Ausnehmung aufweist, in der ein zugewandter Bereich des Meißelkopfes aufgenommen ist, und dass sich der Meißelkopf mit einer Auflagefläche auf einer Stützfläche der Ausnehmung abstützt. Die Ausnehmung und der zugewandte Bereich des Meißelkopfes bilden einen labyrinthartigen Verschluss, der ein Eindringen von Abraummaterial behindert. Auf diese Weise bleibt eine gute Drehbarkeit des Meißels gegenüber dem Stützelement erhalten.An essential design criterion for chisels is, as already mentioned above, the wear-optimized design. The least possible wear on the costly chisel holder should occur, in which the chisel is used. It is therefore advantageous if the support element exerts the least possible rotary wear against the bit holder. At the same time, however, the chisel should turn as well as possible, so that it is evenly worn over its entire circumference. To ensure this, provided that the support element at its top a recess in which a facing portion of the bit head is received, and that the bit head is supported with a bearing surface on a support surface of the recess. The recess and the facing portion of the bit head form a labyrinth-like closure which impedes the penetration of space material. In this way, a good rotation of the bit relative to the support element is maintained.
Eine zentrierte Ausrichtung des Stützelementes gegenüber dem Meißelhalter kann dadurch erreicht werden, dass das Stützelement an seiner Unterseite einen vorstehenden Zentrieransatz aufweist. Dieser kann in eine Zentrieraufnahme des Meißelhalters eingreifen. Zwischen Zentrieransatz und Zentrieraufnahme ist wieder eine Art Dichtung gebildet, die ein Eindringen von Abraummaterial verhindert.A centered alignment of the support member relative to the bit holder can be achieved in that the support member has on its underside a projecting spigot. This can intervene in a centering of the chisel holder. Between centering and centering a kind of seal is again formed, which prevents penetration of space material.
Gemäß einer Konstruktionsvariante kann es vorgesehen sein, dass das Stützelement im Bereich seiner dem Meißelkopf abgewandten Unterseite einen Auslenkabschnitt aufweist. Bei der Demontage des Meißels aus der Meißelaufnahme kann die Befestigungshülse mit dem Auslenkabschnitt in Wirkverbindung gebracht werden. Dadurch wird die Befestigungshülse in den durch den Führungsbereich gebildeten Befestigungshülsenabschnitt gebracht. Die Befestigungshülse liegt dann wieder in einem Spannzustand vor, der eine erleichterte Demontage des Meißels aus der Meißelaufnahme ermöglicht. Dieser Spannzustand erlaubt es aber dann auch, den Meißel bei einer Wiederverwendung ohne oder mit geringem Kraftaufwand in eine Meißelaufnahme einzusetzen. Bevorzugterweise ist der Meißel für die Erstmontage bereits derart konfiguriert, dass der Führungsbereich die Befestigungshülse in einem Spannzustand hält.According to a design variant, it may be provided that the support element has a deflection section in the region of its underside facing away from the bit head. When dismantling the bit from the bit holder, the fastening sleeve can be brought into operative connection with the deflection section. As a result, the fastening sleeve is brought into the fastening sleeve section formed by the guide region. The mounting sleeve is then again in a clamping state that allows easier removal of the bit from the bit holder. However, this clamping state then also makes it possible to use the chisel for reuse without or with little effort in a chisel holder. Preferably, the bit for the initial assembly is already configured such that the guide portion holds the mounting sleeve in a clamping state.
Gemäß einer Erfindungsalternative kann die Befestigungshülse mittels des Auslenkabschnittes aus einer entspannten Stellung in eine Spannstellung verbracht werden. Dies ist beispielsweise dann von Vorteil, wenn das Stützelement von der Befestigungshülse unbeabsichtigt abgeschoben wurde und in seiner dem Meißelkopf zugewandten Arbeitsstellung steht. Dann lässt sich mittels des Auslenkabschnittes einfach wieder eine Montageposition herstellen, indem das Stützelement auf die Befestigungshülse aufgeschoben wird. Der Auslenkabschnitt kann auch dazu dienen, die Befestigungshülse aus einer Teil-Spannstellung in eine Spannstellung zu bringen. Die Teil-Spannstellung liegt üblicherweise dann vor, wenn der Meißel in der Meißelaufnahme montiert ist und mit einer Restspannkraft auf die Bohrungswandung der Meißelaufnahme einwirkt.According to a variant of the invention, the fastening sleeve can be moved by means of the deflection section from a relaxed position into a clamping position. This is for example advantageous if the support member of the mounting sleeve was unintentionally deported and is in his chisel head facing working position. Then, by means of the deflection section, a mounting position can easily be restored by pushing the support element onto the fastening sleeve. The deflection section can also serve to bring the fastening sleeve from a partial clamping position into a clamping position. The partial clamping position is usually present when the bit is mounted in the bit holder and acts with a residual clamping force on the bore wall of the bit holder.
Um ein sicheres Überleiten der Befestigungshülse in den Auslenkabschnitt zu gewährleisten, ist eine denkbare Erfindungsvariante derart, dass das Stützelement einen Einführbereich aufweist, der mittelbar oder unmittelbar in den Auslenkabschnitt übergeleitet ist. Die Befestigungshülse kann mit einem dem Stützelement zugewandten Abschnitt dann in den Einführbereich eingefädelt und über diesen in den Auslenkabschnitt gebracht werden. Hierbei hat es sich als besonders vorteilhaft erwiesen, wenn vorgesehen ist, dass die Befestigungshülse eine Führung aufweist, die im Bereich des Einführbereiches gehalten ist. Dann ist bereits in der Montagestellung eine räumliche Zuordnung der Befestigungshülse zu dem Stützelement getroffen. Aufgrund dieser Überdeckung zwischen Befestigungshülse und Stützelement entsteht ein labyrinthartiger Verschluss, der die Gefahr des Eindringens von Schmutz verringert. Auf diese Weise wird das Drehverhalten zwischen dem Meißel und dem Stützelement verbessert. Denkbar ist es auch, dass die Führung in Achsrichtung des Meißels im Abstand zum Einführbereich steht. Dann sollte der Einführbereich so dimensioniert sein, dass die Führung der Befestigungshülse bei der Demontage zuverlässig eingeführt werden kann. Insbesondere sind dabei auch verschleißbedingte Verformungen beispielsweise der Befestigungshülse in ihrem dem Stützelement zugewandten Bereich zu berücksichtigen.In order to ensure a safe passage of the fastening sleeve into the deflection section, a conceivable variant of the invention is such that the support element has an insertion region which is indirectly or directly transferred into the deflection section. The fastening sleeve can then be threaded into the insertion region with a section facing the support element and brought into the deflection section via the latter. It has proved to be particularly advantageous if it is provided that the fastening sleeve has a guide which is held in the region of the insertion. Then a spatial assignment of the mounting sleeve is already made in the mounting position to the support element. Due to this overlap between mounting sleeve and support element creates a labyrinth-like closure, which reduces the risk of ingress of dirt. In this way, the rotational behavior between the bit and the support element is improved. It is also conceivable that the guide is in the axial direction of the bit at a distance from the insertion. Then, the insertion should be dimensioned so that the leadership of the mounting sleeve can be reliably inserted during disassembly. In particular, wear-related deformations, for example, of the fastening sleeve in its region facing the support element are also to be taken into account.
Eine besonders bevorzugte Erfindungsausgestaltung ist derart, dass im Übergangsbereich des Meißelkopfes in den Meißelschaft ein Zentrierabschnitt angeordnet ist, der an seinem Außenumfang derart ausgebildet ist, dass er zusammen mit dem Führungsbereich eine Drehlagerung bildet. Die Drehlagerung ermöglicht, dass das Stützelement unabhängig von der Befestigungshülse rotieren kann. Dadurch wird eine verschleißoptimierte Auslegung des Gesamtmeißels erreicht. Darüber hinaus entsteht mit dieser Drehlagerung eine zentrierte Ausrichtung des Meißels gegenüber dem Stützelement, was zur Verbesserung des Fräsergebnisses und zur Verringerung von Drehverschleiß führt.A particularly preferred embodiment of the invention is such that a centering section is arranged in the transition area of the bit head in the bit shaft, which is formed on its outer periphery such that it forms a pivot bearing together with the guide region. The pivotal mounting allows the support member to rotate independently of the mounting sleeve. This achieves a wear-optimized design of the entire chisel. In addition, this pivotal mounting results in a centered alignment of the bit with respect to the support element, which leads to the improvement of the milling result and to the reduction of rotary wear.
Ein erfindungsgemäßer Meißel kann derart sein, dass das Stützelement auf seiner dem Meißelkopf zugewandten Oberseite eine Einführerweiterung aufweist, die mittelbar oder unmittelbar in den Führungsbereich übergeht. Diese Einführerweiterung vereinfacht die Erstmontage des Meißels. Dabei wird zunächst die Befestigungshülse auf den Meißelschaft aufgesetzt. Dann wird das Stützelement auf die entspannte Befestigungshülse aufgeschoben, wobei die Einführerweiterung als Einfädelhilfe dient.A chisel according to the invention may be such that the support element has on its upper side facing the chisel head an importer extension which merges directly or indirectly into the guide region. This introducer upgrade simplifies the initial assembly of the bit. First, the mounting sleeve is placed on the drill collar. Then, the support member is pushed onto the relaxed mounting sleeve, the Einführerweiterung serves as Einfädelhilfe.
Eine besonders einfache Konstruktion ergibt sich dadurch, dass der Führungsbereich und der Einführbereich jeweils von einer Bohrung gebildet sind, und dass die den Einführbereich bildende Bohrung einen größeren Durchmesser aufweist als die den Führungsbereich bildende Bohrung.A particularly simple construction results from the fact that the guide region and the insertion region are each formed by a bore, and that the bore forming the insertion region has a larger diameter than the bore forming the guide region.
Es hat sich gezeigt, dass es unvorteilhaft ist, wenn das Stützelement gegenüber dem Meißelhalter drehfest fixiert ist, da sich dieses dann aufgrund von Stoßbeanspruchungen ungleichmäßig in die zugewandte Auflagefläche des Meißelhalters einarbeiten kann. Aus diesem Grunde soll eine relative Beweglichkeit des Stützelementes gegenüber dem Meißelhalter erhalten bleiben. Um dies zu gewährleisten, ist das Stützelement an seinem radial außenliegenden Umfangsbereich gemäß einer Erfindungsvariante mit Ausnehmungen versehen. Diese Ausnehmungen bilden Angriffbereiche für abgetragenes Abraummaterial, das dann eine Umfangskraft in das Stützelement einbringt. Es induziert somit eine Drehbewegung des Stützelementes.It has been found that it is unfavorable when the support member is fixed against rotation relative to the bit holder, as this then can work unevenly due to impact stresses in the facing bearing surface of the bit holder. For this reason, a relative mobility of the support element relative to the bit holder should be maintained. To ensure this, the support element is at its radially outer circumferential region according to a variant of the invention provided with recesses. These recesses form attack areas for removed space material, which then introduces a circumferential force in the support element. It thus induces a rotational movement of the support element.
Eine weitere verschleißoptimierte Meißelauslegung wird dann erreicht, wenn vorgesehen ist, dass der Zentrieransatz eine zur Mittellängsachse des Meißels geneigt verlaufende Zentrierfläche aufweist, die über eine zurückversetzte Ausnehmung in eine radial zur Mittellängsachse verlaufende, umlaufende Sitzfläche übergeht. Die zurückversetzte Ausnehmung bildet eine Art spannungsentlastende Kehle. Zudem stellt diese Ausnehmung den zugeordneten Kantenbereich des Meißelhalter frei, was zu einer verbesserten freien Drehbarkeit führt.A further wear-optimized chisel design is achieved if it is provided that the centering projection has a centering surface which extends inclined to the central longitudinal axis of the chisel and which passes over a recessed recess into a peripheral seat surface running radially to the central longitudinal axis. The recessed recess forms a kind of stress relieving throat. In addition, this recess exposes the associated edge region of the bit holder, which leads to an improved free rotation.
Ein erfindungsgemäßer Meißel kann dadurch gekennzeichnet sein, dass die Befestigungshülse ein oder mehrere Halteelemente aufweist, die in eine umlaufende Nut des Meißelschaftes zur Bildung einer Drehlagerung eingreifen. Auf diese Weise wird die freie Drehbarkeit des Meißels gegenüber der Befestigungshülse in Umfangsrichtung garantiert. Besonders vorteilhaft ist es dabei, wenn vorgesehen ist, dass die Halteelemente aus der Befestigungshülse längs zweier, in Umfangsrichtung verlaufender, Trennkanten abgeteilt sind, und dass die Trennkanten der Halteelemente jeweils den Nutseitenwänden der Nut gegenüberliegen. Die Halteelemente lassen sich sehr maßgenau aus dem Hülsenmaterial ausstanzen und auf die Nutbreite abstimmen. Dabei wird ein geringes Axialspiel des Meißelschaftes gegenüber der Befestigungshülse zugelassen. Die Trennkanten bilden je nach Lage des Meißels linienförmige Anlagekanten an den zugewandten Nutseitenwänden. Diese Ausgestaltung ermöglicht eine exakte Führung des Meißelschaftes, was zu einer verbesserten Dreheigenschaft führt.An inventive chisel may be characterized in that the fastening sleeve has one or more holding elements which engage in a circumferential groove of the chisel shank to form a rotary bearing. In this way, the free rotation of the bit with respect to the mounting sleeve is guaranteed in the circumferential direction. It is particularly advantageous if it is provided that the holding elements are separated from the mounting sleeve along two, extending in the circumferential direction, separating edges, and that the separating edges of the holding elements in each case opposite the groove side walls of the groove. The holding elements can be very accurately punched out of the sleeve material and tuned to the groove width. In this case, a slight axial play of the drill collar against the mounting sleeve is allowed. Depending on the position of the bit, the separating edges form linear contact edges on the facing groove side walls. This embodiment allows an exact guidance of the drill collar, which leads to an improved turning property.
Die Erfindung wird im Folgenden anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:
- Figur 1
- einen Meißel in einer vorbereiteten Ausgangsstellung,
- Figur 2
- in Seitenansicht den in
Figur 1 dargestellten Meißel in einer Montagestellung, - Figur 3
- ein in der
Figur 2 mit III. markiertes Detail, - Figur 4
- in perspektivischer Ansicht ein in den
Figuren 1 bis 3 gezeigtes Stützelement, - Figur 5
- in Seitenansicht den in den
Figuren 1 bis 3 gezeigten Meißel in seiner Montagestellung an einem Meißelhalter, - Figur 6
- ein in der
Figur 5 mit VI markiertes Detail.
- FIG. 1
- a chisel in a prepared starting position,
- FIG. 2
- in side view the in
FIG. 1 illustrated chisel in an assembly position, - FIG. 3
- an Indian
FIG. 2 with III. marked detail, - FIG. 4
- in perspective view in the
FIGS. 1 to 3 shown supporting element, - FIG. 5
- in side view the in the
FIGS. 1 to 3 shown chisel in its mounting position on a chisel holder, - FIG. 6
- an Indian
FIG. 5 VI marked detail.
Die
Auf die Befestigungshülse 20 ist ein Stützelement 30 aufgeschoben. Das Stützelement 30 ist scheibenförmig ausgebildet. Im Folgenden wird die Gestaltung des Stützelementes 30 unter Bezugnahme auf die
Wie
In der Montagestellung, die in den
Die
In der
In den
Zur Demontage des Meißels 10 aus dem Meißelhalter 40 kann ein Demontagewerkzeug, wie bereits vorstehend erwähnt, verwendet werden. Dieses Demontagewerkzeug weist einen Stützabschnitt auf, der frontseitig auf dem Rand 31.2 des Stützelementes 30 abgestützt ist. Ein Austreibdorn dieses Werkzeuges kann rückseitig durch die Meißelaufnahme 46 hindurch bewegt werden, sodass er auf das freie Ende des Meißelschaftes 11 einwirkt und diesen aus der Meißelaufnahme 46 herausschiebt. Der Stützabschnitt des Austreibwerkzeuges hält das Stützelement 30 in seiner Lage. Dadurch wird die Führung 22 der Befestigungshülse 20 in den Bereich des Auslenkabschnittes 36.1 des Stützelementes 30 geschoben. Der Auslenkabschnitt 36.1 spannt dann das durch die Führung 22 gebildete Ende der Befestigungshülse 20 radial nach innen, wobei eine Durchmesserverringerung der Befestigungshülse 20 zumindest in diesem Bereich erreicht wird. Infolge einer weiteren Verschiebung des Meißels 10 gelangt die Befestigungshülse 20 mit ihrem Mantelbereich in den Führungsbereich 36 des Stützelementes 30. Diese Schiebebewegung kann so lange fortgesetzt werden, bis beispielsweise die in der
Claims (13)
wobei das Stützelement (30) an seiner Unterseite einen vorstehenden Zentrieransatz (34) aufweist,
dadurch gekennzeichnet,
dass der Zentrieransatz (34) eine zur Mittellängsachse des Meißels (10) geneigt verlaufende Zentrierfläche aufweist, die über eine zurückversetzte Ausnehmung (35) in eine radial zur Mittellängsachse verlaufende, umlaufende Seitenfläche (33) übergeht.Chisel, in particular round shank chisel with a chisel head (13) and a chisel shank (11), wherein in the region of the chisel shank (11) a fastening sleeve (20) is held and with a support element (30) having a guide portion (36),
the support element (30) having on its underside a projecting centering projection (34),
characterized,
in that the centering projection (34) has a centering surface which runs inclined relative to the central longitudinal axis of the bit (10) and merges via a recessed recess (35) into a circumferential side face (33) running radially to the central longitudinal axis.
dadurch gekennzeichnet,
dass der Führungsbereich (36) die Befestigungshülse (20) in einem Spannzustand hält.Chisel according to claim 1,
characterized,
in that the guide region (36) holds the fastening sleeve (20) in a tensioned state.
dadurch gekennzeichnet,
dass mittels des Auslenkabschnittes (36.1) die Befestigungshülse (20) aus einer entspannten Stellung in eine Spannstellung oder von einer Teil-Spannstellung in eine Spannstellung bringbar ist.Chisel according to claim 1 or 2,
characterized,
in that the fastening sleeve (20) can be brought from a relaxed position into a clamping position or from a partial clamping position into a clamping position by means of the deflection section (36.1).
dadurch gekennzeichnet,
dass das Stützelement (30) einen Einführbereich (36.2) aufweist, der mittelbar oder unmittelbar in den Auslenkabschnitt (36.1) übergeleitet ist.A bit according to any one of claims 1 to 3,
characterized,
in that the support element (30) has an insertion region (36.2) which is indirectly or directly transferred into the deflection section (36.1).
dadurch gekennzeichnet,
dass die Befestigungshülse (20) eine Führung (22) aufweist, die im Bereich des Einführbereiches (36.2) gehalten ist, oder dass die Führung (22) in Achsrichtung des Meißels (10) im Abstand zum Einführbereich (36.2) steht.Chisel according to claim 4,
characterized,
in that the fastening sleeve (20) has a guide (22) which is held in the region of the insertion region (36.2), or in that the guide (22) is spaced from the insertion region (36.2) in the axial direction of the bit (10).
dadurch gekennzeichnet,
dass im Übergangsbereich des Meißelkopfes (13) in den Meißelschaft (11) ein Zentrierabschnitt (12) angeordnet ist, der an seinem Außenumfang derart ausgebildet ist, dass er zusammen mit dem Führungsbereich (36) eine Drehlagerung bildet.Chisel according to one of claims 1 to 5,
characterized,
that in the transition region of the chisel head (13) in the drill collar (11) a centering portion (12) is arranged, which is formed on its outer periphery such that it forms a pivot bearing together with the guide portion (36).
dadurch gekennzeichnet,
dass das Stützelement (30) auf seiner dem Meißelkopf (13) zugewandten Oberseite eine Einführerweiterung (36.3) aufweist, die mittelbar oder unmittelbar in den Führungsbereich (36) übergeht.Chisel according to one of claims 1 to 6,
characterized,
that the support element (30) has on its side facing the chisel head (13) a top Einführerweiterung (36.3), which passes directly or indirectly into the guide portion (36).
dadurch gekennzeichnet,
dass der Führungsbereich (36) und der Einführbereich (36.2) jeweils von einer Bohrung gebildet sind, und dass die den Einführbereich (36.2) bildende Bohrung einen größeren Durchmesser aufweist als die den Führungsbereich (36) bildende Bohrung.Chisel according to one of claims 1 to 7,
characterized,
in that the guide region (36) and the insertion region (36.2) are each formed by a bore, and in that the bore forming the insertion region (36.2) has a larger diameter than the bore forming the guide region (36).
dadurch gekennzeichnet,
dass das Stützelement (30) an seiner Oberseite eine Ausnehmung (31) aufweist, in der ein zugewandter Bereich des Meißelkopfes (13) aufgenommen ist, und dass sich der Meißelkopf (13) mit einer Auflagefläche (13.1) auf einer Stützfläche (31.1) der Ausnehmung (31) abstützt.Chisel according to one of claims 1 to 8,
characterized,
that the support element (30) has on its upper side a recess (31) in which a facing area of the chisel head (13) is accommodated, and in that the chisel head (13) with a support surface (13.1) on a support surface (31.1) of Recess (31) is supported.
dadurch gekennzeichnet,
dass das Stützelement (30) an seinem radial außenliegenden Umfangsbereich Ausnehmungen (32) aufweist.A bit according to any one of claims 1 to 9,
characterized,
that the support element (30) at its radially outer peripheral region of recesses (32).
dadurch gekennzeichnet,
dass das Stützelement (30) im Bereich seiner dem Meißelkopf (13) abgewandten Unterseite einen Auslenkabschnitt (36.1) aufweist.Chisel according to one of claims 1 to 10,
characterized,
that the support element (30) has a deflection section (36.1) facing away from underside in the region of the chisel head (13).
dadurch gekennzeichnet,
dass die Befestigungshülse (20) ein oder mehrere Halteelemente (21) aufweist, die in eine umlaufende Nut (15) des Meißelschaftes (11) zur Bildung einer Drehlagerung eingreifen.A bit according to any one of claims 1 to 11,
characterized,
in that the fastening sleeve (20) has one or more holding elements (21) which engage in a circumferential groove (15) of the drill shank (11) to form a rotary bearing.
dadurch gekennzeichnet,
dass das/die Haltelemente (21) aus der Befestigungshülse (20) längs zweier in Umfangsrichtung verlaufender Trennkanten abgeteilt sind, und dass die Trennkanten der Halteelemente (21) jeweils den Nutseitenrändern der Nut (15) gegenüberliegen.Chisel according to claim 12,
characterized,
in that the holding element (s) (21) are divided off from the fastening sleeve (20) along two circumferentially extending separating edges, and in that the separating edges of the holding elements (21) lie opposite the groove side edges of the groove (15).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009049780.3A DE102009049780B4 (en) | 2009-10-19 | 2009-10-19 | Chisel, in particular round shank chisel |
EP10770785.3A EP2491228B1 (en) | 2009-10-19 | 2010-10-14 | Round shaft bit with a retaining sleeve |
Related Parent Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10770785.3 Division | 2010-10-14 | ||
EP10770785.3A Division-Into EP2491228B1 (en) | 2009-10-19 | 2010-10-14 | Round shaft bit with a retaining sleeve |
EP10770785.3A Division EP2491228B1 (en) | 2009-10-19 | 2010-10-14 | Round shaft bit with a retaining sleeve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2639402A2 true EP2639402A2 (en) | 2013-09-18 |
EP2639402A3 EP2639402A3 (en) | 2018-02-28 |
Family
ID=43770513
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10770785.3A Active EP2491228B1 (en) | 2009-10-19 | 2010-10-14 | Round shaft bit with a retaining sleeve |
EP13171907.2A Ceased EP2639402A3 (en) | 2009-10-19 | 2010-10-14 | Round shaft bit with a retaining sleeve |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10770785.3A Active EP2491228B1 (en) | 2009-10-19 | 2010-10-14 | Round shaft bit with a retaining sleeve |
Country Status (10)
Country | Link |
---|---|
US (2) | US9074472B2 (en) |
EP (2) | EP2491228B1 (en) |
JP (1) | JP5409923B2 (en) |
CN (1) | CN102812206B (en) |
AU (1) | AU2010309987B2 (en) |
BR (1) | BR112012009213A2 (en) |
DE (2) | DE102009049780B4 (en) |
PL (1) | PL2491228T3 (en) |
RU (2) | RU2522607C2 (en) |
WO (1) | WO2011048006A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014104040A1 (en) | 2014-03-24 | 2015-09-24 | Betek Gmbh & Co. Kg | Chisel, in particular round shank chisel |
US20180161888A1 (en) * | 2016-12-09 | 2018-06-14 | Wirtgen Gmbh | Apparatus for metal-cutting machining of wear-affected bit holders of road milling machines, and use of an apparatus for overhauling such wear-affected bit holders |
EP3467255A1 (en) * | 2017-10-09 | 2019-04-10 | Wirtgen GmbH | Pick holder |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD775247S1 (en) * | 2015-01-22 | 2016-12-27 | Betek Gmbh & Co. Kg | Flat chisel |
CN106149535B (en) * | 2015-03-27 | 2019-04-12 | 永沛得股份有限公司 | Cutting tool gripper |
CA2982209A1 (en) * | 2015-04-10 | 2016-10-13 | Joy Mm Delaware, Inc. | Cutting bit and extraction tool for same |
DE102016108808A1 (en) * | 2016-05-12 | 2017-11-16 | Betek Gmbh & Co. Kg | Chisel with a support element with a spigot |
CA3025632C (en) | 2016-05-27 | 2024-01-02 | Joy Global Underground Mining Llc | Cutting device with tapered cutting element |
CA2985772A1 (en) | 2016-11-18 | 2018-05-18 | Harnischfeger Technologies, Inc. | Modular ground engagement tooling system |
DE102018109150A1 (en) * | 2018-04-17 | 2019-10-17 | Betek Gmbh & Co. Kg | Tooth |
AU201816544S (en) | 2018-08-01 | 2018-11-27 | Betek Gmbh & Co Kg | A chisel |
CN111576174A (en) * | 2020-05-31 | 2020-08-25 | 苏州五元素机械制造有限公司 | Chisel knife |
US11746652B2 (en) | 2021-04-07 | 2023-09-05 | XCal Tools—Bristol, LLC | Tool bit assembly |
USD1015136S1 (en) | 2022-02-21 | 2024-02-20 | Kennametal Inc. | Washer for cutting tools |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3701905C1 (en) | 1987-01-23 | 1988-09-15 | Betek Bergbau & Hartmetall | Attachment of a round shank chisel |
EP1427913B1 (en) | 2001-09-10 | 2006-02-15 | Kennametal Inc. | Embossed washer |
DE102005042663A1 (en) | 2004-09-28 | 2006-03-30 | The Sollami Company, Herrin | Non-rotatable wear ring and retaining sleeve for a rotatable tool |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9211739U1 (en) | 1992-09-01 | 1992-11-05 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co Kg, 7234 Aichhalden, De | |
DE4322401C2 (en) | 1993-07-06 | 1996-06-20 | Betek Bergbau & Hartmetall | Attachment of a cutting tool to a cutting body |
RU2123594C1 (en) * | 1995-11-27 | 1998-12-20 | Совместное российско-германское предприятие "Мосвирт" | Protective member of cutting tool |
US5725283A (en) * | 1996-04-16 | 1998-03-10 | Joy Mm Delaware, Inc. | Apparatus for holding a cutting bit |
DE19803166C2 (en) | 1998-01-28 | 2000-05-11 | Betek Bergbau & Hartmetall | Round shank chisels for a cutting machine or the like |
US6113195A (en) | 1998-10-08 | 2000-09-05 | Sandvik Ab | Rotatable cutting bit and bit washer therefor |
UA73489C2 (en) * | 1998-12-08 | 2005-08-15 | Genisis Mining Technologies Pr | Cutting arrangement and sleeve for it |
DE19856916C1 (en) | 1998-12-10 | 2000-08-31 | Betek Bergbau & Hartmetall | Attachment for a round shank chisel |
DE19902766C2 (en) | 1999-01-25 | 2002-03-21 | Betek Bergbau & Hartmetall | Tool for a road milling, cutting, mining machine or the like. |
DE19964291C2 (en) | 1999-05-14 | 2003-03-13 | Betek Bergbau & Hartmetall | Tool for a cutting, mining or road milling machine |
DE19922208C2 (en) | 1999-05-14 | 2002-02-21 | Betek Bergbau & Hartmetall | Attack cutting tools |
DE19922320C5 (en) | 1999-05-14 | 2004-11-25 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Tool for a cutting, mining or road milling machine |
US6702393B2 (en) | 2001-05-23 | 2004-03-09 | Sandvik Rock Tools, Inc. | Rotatable cutting bit and retainer sleeve therefor |
RU2198292C1 (en) * | 2001-11-12 | 2003-02-10 | Леванковский Игорь Анатольевич | Device for breakage of mineral and artificial materials |
US6863352B2 (en) * | 2002-01-24 | 2005-03-08 | The Sollami Company | Rotatable tool assembly |
US20040004389A1 (en) * | 2002-06-14 | 2004-01-08 | Latham Winchester E. | Replacable wear surface for bit support |
RU2258808C1 (en) * | 2004-03-19 | 2005-08-20 | Гриневицкий Юрий Александрович | Mineral and artificial material cutting device |
USD520035S1 (en) | 2004-06-17 | 2006-05-02 | Betek Bergbau-Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Chisel |
DE102004030691B4 (en) * | 2004-06-24 | 2008-12-18 | Wirtgen Gmbh | Tool-holding device |
US20060125306A1 (en) * | 2004-12-15 | 2006-06-15 | The Sollami Company | Extraction device and wear ring for a rotatable tool |
DE102005051449B3 (en) * | 2005-10-27 | 2007-03-01 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Circular shank chisel, has retaining units divided between edges, which are at distance from each other and extend over part of circumference of clamping sleeve, where units form co-axial concave central section turned to convex groove base |
DE102005051450B4 (en) | 2005-10-27 | 2010-08-05 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Round shank chisel and chisel holder |
USD572735S1 (en) | 2006-05-02 | 2008-07-08 | Betek Bergbau- Und Hartmetalltechnik | Chisel-tip for a cutter-bit |
US20070257545A1 (en) * | 2006-05-08 | 2007-11-08 | Sandvik Intelectual Property Ab | Cutting tool and method of assembling the cutting tool |
DE102006029300B3 (en) | 2006-06-23 | 2007-11-29 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Round shaft chisel fits into chuck, in which it can rotate, inner contour of chuck and outer contour of shaft allowing chisel to swivel about its longitudinal axis |
US7413256B2 (en) * | 2006-08-11 | 2008-08-19 | Hall David R | Washer for a degradation assembly |
DE102007030658A1 (en) * | 2007-07-02 | 2009-01-15 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | shank bits |
DE202007010047U1 (en) | 2007-07-02 | 2007-09-27 | Wirtgen Gmbh | Tool |
DE102007051911B4 (en) | 2007-10-29 | 2011-06-16 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | shank bits |
US20100181820A1 (en) * | 2009-01-22 | 2010-07-22 | Latham Winchester E | Wear insert and retainer |
WO2011016765A1 (en) * | 2009-08-04 | 2011-02-10 | Sandvik Intellectual Property Ab | Non-rotating washer for tool pick, tool and block assembly, method to reduce erosive wear and material removal machine |
-
2009
- 2009-10-19 DE DE102009049780.3A patent/DE102009049780B4/en active Active
-
2010
- 2010-10-14 CN CN201080047367.9A patent/CN102812206B/en active Active
- 2010-10-14 EP EP10770785.3A patent/EP2491228B1/en active Active
- 2010-10-14 WO PCT/EP2010/065446 patent/WO2011048006A2/en active Application Filing
- 2010-10-14 US US13/502,376 patent/US9074472B2/en active Active
- 2010-10-14 PL PL10770785T patent/PL2491228T3/en unknown
- 2010-10-14 RU RU2012120741/03A patent/RU2522607C2/en active
- 2010-10-14 BR BR112012009213A patent/BR112012009213A2/en not_active IP Right Cessation
- 2010-10-14 JP JP2012534631A patent/JP5409923B2/en active Active
- 2010-10-14 RU RU2014107889/03A patent/RU2580119C2/en active
- 2010-10-14 DE DE202010018061.9U patent/DE202010018061U1/en not_active Expired - Lifetime
- 2010-10-14 EP EP13171907.2A patent/EP2639402A3/en not_active Ceased
- 2010-10-14 AU AU2010309987A patent/AU2010309987B2/en active Active
-
2015
- 2015-07-01 US US14/788,993 patent/US9234424B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3701905C1 (en) | 1987-01-23 | 1988-09-15 | Betek Bergbau & Hartmetall | Attachment of a round shank chisel |
EP1427913B1 (en) | 2001-09-10 | 2006-02-15 | Kennametal Inc. | Embossed washer |
DE102005042663A1 (en) | 2004-09-28 | 2006-03-30 | The Sollami Company, Herrin | Non-rotatable wear ring and retaining sleeve for a rotatable tool |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102014104040A1 (en) | 2014-03-24 | 2015-09-24 | Betek Gmbh & Co. Kg | Chisel, in particular round shank chisel |
WO2015144450A1 (en) * | 2014-03-24 | 2015-10-01 | Betek Gmbh & Co. Kg | Pick, in particular a round shaft pick |
US10260341B2 (en) | 2014-03-24 | 2019-04-16 | Betek Gmbh & Co. Kg | Pick, in particular a round shaft pick |
EP3492696A1 (en) | 2014-03-24 | 2019-06-05 | Betek GmbH & Co. KG | Chisel, in particular round shaft chisel |
US10662770B2 (en) | 2014-03-24 | 2020-05-26 | Betek Gmbh & Co. Kg | Pick, in particular a round shaft pick |
US20180161888A1 (en) * | 2016-12-09 | 2018-06-14 | Wirtgen Gmbh | Apparatus for metal-cutting machining of wear-affected bit holders of road milling machines, and use of an apparatus for overhauling such wear-affected bit holders |
US11273502B2 (en) * | 2016-12-09 | 2022-03-15 | Wirtgen Gmbh | Apparatus for metal-cutting machining of wear-affected bit holders of road milling machines, and use of an apparatus for overhauling such wear-affected bit holders |
EP3467255A1 (en) * | 2017-10-09 | 2019-04-10 | Wirtgen GmbH | Pick holder |
Also Published As
Publication number | Publication date |
---|---|
EP2491228A2 (en) | 2012-08-29 |
US20120326488A1 (en) | 2012-12-27 |
JP5409923B2 (en) | 2014-02-05 |
CN102812206A (en) | 2012-12-05 |
WO2011048006A3 (en) | 2012-07-19 |
DE102009049780B4 (en) | 2016-02-18 |
DE202010018061U1 (en) | 2013-12-16 |
EP2491228B1 (en) | 2019-07-10 |
EP2639402A3 (en) | 2018-02-28 |
DE102009049780A1 (en) | 2011-04-21 |
RU2014107889A (en) | 2015-09-10 |
AU2010309987B2 (en) | 2015-01-22 |
US9234424B1 (en) | 2016-01-12 |
US9074472B2 (en) | 2015-07-07 |
JP2013508579A (en) | 2013-03-07 |
PL2491228T3 (en) | 2020-01-31 |
RU2580119C2 (en) | 2016-04-10 |
RU2012120741A (en) | 2013-11-27 |
US20150369044A1 (en) | 2015-12-24 |
WO2011048006A2 (en) | 2011-04-28 |
AU2010309987A1 (en) | 2012-06-07 |
RU2522607C2 (en) | 2014-07-20 |
CN102812206B (en) | 2015-04-01 |
BR112012009213A2 (en) | 2016-08-16 |
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