EP0516581B1 - Drilling and chiselling tool with basic body and cutting element - Google Patents
Drilling and chiselling tool with basic body and cutting element Download PDFInfo
- Publication number
- EP0516581B1 EP0516581B1 EP92810283A EP92810283A EP0516581B1 EP 0516581 B1 EP0516581 B1 EP 0516581B1 EP 92810283 A EP92810283 A EP 92810283A EP 92810283 A EP92810283 A EP 92810283A EP 0516581 B1 EP0516581 B1 EP 0516581B1
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- EP
- European Patent Office
- Prior art keywords
- recess
- main body
- tool
- reliefs
- tool according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
-
- 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
- Y10T408/909—Having peripherally spaced cutting edges
Definitions
- the invention relates to a drilling and chiseling tool according to the generic term of claim 1.
- Drilling and chiseling tools of the type mentioned have been around for many Years and have been used accordingly also proven. However, due to the extremely different material properties between the steel used as the base body and that as the cutting body used carbide problems. On the one hand, these problems can during production and on the other hand only during use of the tools arise.
- FR-A-1.05.105 there are different cross-sectional shapes for Recesses for hard metal inserts and for hard metal inserts in rock drills described.
- the recesses have an essentially U-shaped axial section Profile on and can expand or to the free front end of the body narrow.
- the gap between the hard metal insert and the boundary walls the recess in the base body is completely filled with solder.
- a rock drill is known, the main body of which Has recess for a hard metal insert, the one in axial section has a substantially U-shaped shape.
- the base of the recess is designed in this way and the hard metal insert is soldered in such a way that the thickness of the solder layer on the Sides of the carbide insert is greater than its thickness between the base of the Carbide insert and the recess.
- the gap between the carbide insert and the boundary walls of the recess are filled with solder.
- the solder seeps into the area below the base of the hard metal insert by capillary action. This range is depending on the flow behavior of the solder, gap width and capillary action more or less completely filled with solder.
- the invention has for its object a drilling and chiseling tool to create, with the resulting stresses in use of the individual parts can be avoided so that this increases the overall service life of the tool.
- the object is achieved in that additional cutouts are provided, being such Recesses are provided in the area of the longitudinal ends of the side walls of the recess and expediently normal to the main axis and extend parallel to the side walls of the recess and are free of solder.
- the effect of such cutouts essentially exists in that a certain flexibility of the basic body in the critical areas, ie in the area of the longitudinal ends of the Recess is achieved.
- the measure according to the invention on a drilling and chiseling tool builds shear stress peaks in the area of the longitudinal ends the recess. This creates about the parallel length extending to the main axis even distribution of the shear stresses in the the connection between Basic body and cutting body creating solder seam. Overuse, those to destroy the solder seam as well as the neighboring one Lead areas of base body and cutting body, are avoided.
- the variation the thickness of the solder seam is expediently such that that the thickness increases towards both longitudinal ends.
- the solder seam is thus in those areas where the highest shear stresses occur, formed thicker. As a result, in there is more material available in those areas, so that these areas are able to handle the shear stresses to better balance and thus reduce peaks.
- the recesses can, for example, as bores be formed, which the base body in the area of the Machining end of the tool facing away from the longitudinal end of the side walls. Through such holes the base body in the bottom area of the recess a certain Compliance. This allows shear stress peaks be dismantled and above all one if necessary in the floor area relieves the existing solder seam in such a way that breaks no longer occur here.
- the recesses For reducing the shear stress peaks in the area of the machining side
- the recesses In the end it is suggested the recesses to be designed as open grooves. These preferably run Grooves parallel to the cutting body over the entire front Cross section of the tool.
- the greater the ratio between thickness of the Cutting body and thickness of the surrounding the cutting body Area of the base body is between the recess and grooves remaining wall thickness of the base body preferably 0.1 to 0.8 times the width of the recess. It is therefore also the one in this area of the recess Reduction of the shear stress peaks serving compliance Basic body achieved.
- Fig. 1 shows the machining end of a drilling and Chisel tool with base body 1 and cutting body 2.
- the base body 1 has a receptacle for the cutting body 2 Recess 3 on. Between the recess 3 and the cutting body 2 is the solder seam 4.
- the solder seam 4 along the length parallel to the main axis different thickness so that the thickness at the is greatest at both longitudinal ends.
- the different The thickness of the solder seam 4 comes in the example shown that the side walls of the recess 3 are light are convexly curved.
- Fig. 2 is a machining end of a drilling and Chisel tool can be seen that a body 5 with has a recess 7, wherein in the recess 7 Cutting body 6 is arranged. Between cutting body 6 and Recess 7 is a solder seam 8. The base body 5 is penetrated by holes 9, which the function of relief notches comes to.
- a machining end of another drilling and chiseling tool 3 again shows a base body 10 and a cutting body 11 within a recess 12.
- a solder seam 13 is between the cutting body 11 and the recess 12 arranged.
- a recess 14 is provided in the recess 12, which penetrates the base body 10. Because of this recess 14 the solder seam 13 is interrupted at the bottom of the recess 12.
- the machinable end of FIG. 4 of a The drilling and chiseling tool has a base body 15 Recess 17 and the cutting body 16 arranged therein. There is between the cutting body 16 and the recess 17 an emergency seam 18.
- the base body 15 points in the area of the machining side End grooves 19 on which the base body 15 enforce and open towards the machining end are.
- the between the recess 17 and the grooves 19th remaining wall thickness w is less than the width b of the Recess 17, ie the wall thickness w is 0.1 to 0.8 times the width b of the recess 17.
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
Description
Die Erfindung betrifft ein Bohr- und Meisselwerkzeug
gemäss dem Oberbegriff
des Patentanspruchs 1.The invention relates to a drilling and chiseling tool
according to the generic term
of
Bohr- und Meisselwerkzeuge der genannten Art sind seit vielen Jahren verbreitet und haben sich dementsprechend im Einsatz auch bewährt. Allerdings entstehen aufgrund der äusserst unterschiedlichen Materialeigenschaften zwischen dem als Grundkörper verwendeten Stahl und dem als Schneidkörper verwendeten Hartmetall Probleme. Diese Probleme können einerseits bei der Fertigung und andererseits erst beim Einsatz der Werkzeuge entstehen.Drilling and chiseling tools of the type mentioned have been around for many Years and have been used accordingly also proven. However, due to the extremely different material properties between the steel used as the base body and that as the cutting body used carbide problems. On the one hand, these problems can during production and on the other hand only during use of the tools arise.
Zu den bei der Fertigung entstehenden Probleme zählen beispielsweise die Wärmespannungen, welche durch die unterschiedlichen Wärmeausdehnungskoeffizienten der verwendeten Materialien hervorgerufen werden. Um diesem Problem entgegenzutreten, wird beispielsweise entsprechend DE-A-34 26 977 vorgeschlagen, der Ausnehmung im Grundkörper eine im Vergleich zum Schneidkörper grössere Längserstreckung zu verleihen.Problems that arise during production include, for example the thermal stresses caused by the different Coefficient of thermal expansion of the used Materials are evoked. To counter this problem becomes, for example, accordingly DE-A-34 26 977 proposed the recess in the base body a greater longitudinal extension than the cutting body to rent.
Mit dieser bekannten Lösung können die im Einsatz der Werkzeuge entstehenden wesentlich einschneidenderen Probleme keineswegs gelöst werden. Diese Probleme im Einsatz der Werkzeuge bestehen vor allem darin, dass durch die sehr unterschiedlichen Elastizitätsmodule der verwendeten Materialien Ueberbeanspruchungen auftreten, welche zu Beschädigungen führen, die die Lebensdauer der Werkzeuge beeinträchtigen. Die Ursache dieser Ueberbeanspruchungen liegt vor allem in den entlang der Hauptachse der Werkzeuge sehr unterschiedlichen Schubspannungen, welche ihre Spitzenwerte an den beiden Längsenden der Ausnehmung aufweisen. Dadurch entstehen im Bereich dieser Längsenden sowohl Beschädigungen der Lotnaht als auch Beschädigungen des Grundkörpers sowie des Schneidkörpers.With this known solution you can use the tools arising far more drastic problems by no means be solved. These problems in using the The main tools are that through the very different moduli of elasticity of the materials used Overuse occurs, which leads to damage that affect the service life of the tools. The cause of these overstressing exists especially in those very different along the main axis of the tools Shear stresses which reach their peak values have the two longitudinal ends of the recess. This creates both damage in the area of these longitudinal ends the solder seam and damage to the base body as well of the cutting body.
In der FR-A-1.05,105 sind verschiedene Querschnittsformen für Ausnehmungen für Hartmetalleinsätze und für Hartmetalleinsätze bei Gesteinsbohrem beschrieben. Die Ausnehmungen weisen im Axialschnitt ein im wesentlichen U-förmiges Profil auf und können sich zum freien Vorderende des Grundkörpers erweitem oder verengen. Der Spalt zwischen dem Hartmetalleinsatz und den Begrenzungswandungen der Ausnehmung im Grundkörper ist vollständig mit Lot verfüllt. Durch die beschriebene Ausbildung der Ausnehmungen sollen bei diesem bekannten Gesteinsbohrer die Hartmetalleinsätze leichter ausrichtbar und einlötbar sein. Auf das Problem der im Betrieb auftretenden Schubspannungen wird in dieser Druckschrift nicht eingegangen.In FR-A-1.05.105 there are different cross-sectional shapes for Recesses for hard metal inserts and for hard metal inserts in rock drills described. The recesses have an essentially U-shaped axial section Profile on and can expand or to the free front end of the body narrow. The gap between the hard metal insert and the boundary walls the recess in the base body is completely filled with solder. By the described Formation of the recesses should be in this known rock drill Carbide inserts are easier to align and solder. On the problem of im Shear stresses occurring during operation are not dealt with in this document.
Aus der DE-A-28 02 119 ist ein Gesteinsbohrer bekannt, dessen Grundkörper eine Ausnehmung für einen Hartmetalleinsatz aufweist, der im Axialschnitt eine im wesentlichen U-förmige Form aufweist. Die Basis der Ausnehmung ist derart gestaltet und der Hartmetalleinsatz ist derart eingelötet, dass die Dicke der Lötmittelschicht an den Seiten des Hartmetalleinsatzes grösser ist als ihre Dicke zwischen der Basis des Hartmetalleinsatzes und der Ausnehmung. Der Spalt zwischen dem Hartmetalleinsatz und den Begrenzungswandungen der Ausnehmung ist mit Lötmittel verfüllt. Das Lötmittel sickert durch Kapillarwirkung in den Bereich unterhalb der Basis des Hartmetalleinsatzes. Je nach Fliessverhalten des Lötmittels, Spaltweite und Kapillarwirkung ist dieser Bereich mehr oder weniger vollständig mit Lötmittel verfüllt. Bei diesem bekannten Gesteinsbohrer sind die Ausbildung der Lötmittelschicht und die Verfüllung des Spalts zwischen dem Hartmetalleinsatz und den Begrenungswandungen der Ausnehmung nicht vollständig kontrollierbar und unterliegen Schwankungen, die sich auf die Qualität und die Haltbarkeit der Befestigung der Hartmetalleinsätze negativ auswirken kann. Das Problem der im Betrieb auftretenden Schubspannungen ist in dieser Druckschrift nicht angesprochen.From DE-A-28 02 119 a rock drill is known, the main body of which Has recess for a hard metal insert, the one in axial section has a substantially U-shaped shape. The base of the recess is designed in this way and the hard metal insert is soldered in such a way that the thickness of the solder layer on the Sides of the carbide insert is greater than its thickness between the base of the Carbide insert and the recess. The gap between the carbide insert and the boundary walls of the recess are filled with solder. The solder seeps into the area below the base of the hard metal insert by capillary action. This range is depending on the flow behavior of the solder, gap width and capillary action more or less completely filled with solder. In this well-known Rock drills are the formation of the solder layer and the filling of the gap not between the hard metal insert and the boundary walls of the recess fully controllable and subject to fluctuations that affect quality and the durability of the attachment of the hard metal inserts can have a negative impact. The There is no problem with the shear stresses occurring during operation in this document addressed.
Der Erfindung liegt die Aufgabe zugrunde, ein Bohr- und Meisselwerkzeug zu schaffen, bei dem im Einsatz entstehende Ueberbeanspruchungen der einzelnen Teile vermieden werden, so dass dadurch die Lebensdauer des Werkzeuges insgesamt erhöht wird.The invention has for its object a drilling and chiseling tool to create, with the resulting stresses in use of the individual parts can be avoided so that this increases the overall service life of the tool.
Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass zusätzliche Aussparungen vorgesehen sind, wobei solche Aussparungen im Bereich der Längsenden der Seitenwände der Ausnehmung vorgesehen sind und sich zweckmässigerweise normal zur Hauptachse und parallel zu den Seitenwänden der Ausnehmung erstrecken und frei von Lot sind. Die Wirkung solcher Aussparungen besteht im wesentlichen darin, dass eine gewisse Nachgiebigkeit des Grundkörpers in den kritischen Bereichen, dh im Bereich der Längsenden der Ausnehmung erzielt wird.According to the invention the object is achieved in that additional cutouts are provided, being such Recesses are provided in the area of the longitudinal ends of the side walls of the recess and expediently normal to the main axis and extend parallel to the side walls of the recess and are free of solder. The The effect of such cutouts essentially exists in that a certain flexibility of the basic body in the critical areas, ie in the area of the longitudinal ends of the Recess is achieved.
Die erfindungsgemässe Massnahme an einem Bohr- und Meisselwerkzeug baut Schubspannungsspitzen im Bereich der Längsenden der Ausnehmung ab. Dadurch entsteht über die sich parallel zur Hauptachse erstreckende Länge eine gleichmässige Verteilung der Schubspannungen in der die Verbindung zwischen Grundkörper und Schneidkörper schaffenden Lotnaht. Ueberbeanspruchungen, die zur Zerstörung der Lotnaht sowie der benachbarten Bereiche von Grundkörper und Schneidkörper führen, werden dadurch vermieden.The measure according to the invention on a drilling and chiseling tool builds shear stress peaks in the area of the longitudinal ends the recess. This creates about the parallel length extending to the main axis even distribution of the shear stresses in the the connection between Basic body and cutting body creating solder seam. Overuse, those to destroy the solder seam as well as the neighboring one Lead areas of base body and cutting body, are avoided.
Die Variation der Dicke der Lotnaht ist zweckmässigerweise derart ausgebildet, dass die Dicke zu beiden Längsenden hin zunimmt. Die Lotnaht ist damit in jenen Bereichen, wo die höchsten Schubspannungen auftreten, dicker ausgebildet. Dies hat zur Folge, dass in jenen Bereichen mehr Material an Lot zur Verfügung steht, so dass diese Bereiche in der Lage sind, die Schubspannungen besser auszugleichen und somit Spitzen abzubauen.The variation the thickness of the solder seam is expediently such that that the thickness increases towards both longitudinal ends. The solder seam is thus in those areas where the highest shear stresses occur, formed thicker. As a result, in there is more material available in those areas, so that these areas are able to handle the shear stresses to better balance and thus reduce peaks.
Die Erzielung einer solchen Lotnaht mit unterschiedlicher Dicke kann in verschiedenartiger Weise erfolgen. Zum einen kann dies durch eine entsprechende Form des Schneidkörpers geschehen, so dass dieser in seiner Längserstreckung leicht konvex ausgebildet ist. Zum anderen kann in analoger Weise die Ausnehmung eine entsprechende Formgebung aufweisen, was zu einer leicht konvexen Ausbildung der Seitenwände in Längserstreckung führt. Darüber hinaus ist selbstverständlich auch eine Kombination dieser beiden Massnahmen möglich.The achievement of such a solder seam with different Thickness can be done in various ways. On the one hand this can be done by an appropriate shape of the cutting body happen so that this is easy in its longitudinal extent is convex. Secondly, in an analogous manner the recess have a corresponding shape, what for a slightly convex formation of the side walls in Longitudinal extension leads. In addition, it goes without saying a combination of these two measures is also possible.
Die Aussparungen können beispielsweise als Bohrungen ausgebildet sein, welche den Grundkörper im Bereich des vom bearbeitungsseitigen Ende des Werkzeuges abgewandten Längsende der Seitenwände durchsetzen. Durch solche Bohrungen wird dem Grundkörper im Bodenbereich der Ausnehmung eine gewisse Nachgiebigkeit verliehen. Damit können Schubspannungsspitzen abgebaut werden und vor allem wird eine gegebenenfalls im Bodenbereich der Ausnehmung vorhandene Lotnaht derart entlastet, dass Brüche hier nicht mehr auftreten.The recesses can, for example, as bores be formed, which the base body in the area of the Machining end of the tool facing away from the longitudinal end of the side walls. Through such holes the base body in the bottom area of the recess a certain Compliance. This allows shear stress peaks be dismantled and above all one if necessary in the floor area relieves the existing solder seam in such a way that breaks no longer occur here.
Den vorgenannten Gedanken noch konsequenter weiterverfolgend, wird gemäss einer weiteren Ausführungsform vorgeschlagen, die Aussparungen derart vorzusehen, dass sie sich an das vom bearbeitungsseitigen Ende des Werkzeuges abgewandten Längsende der Ausnehmung anschliessen. Dadurch wird eine gewisse Nachgiebigkeit des Grundkörpers erreicht, was zu einer Vermeidung von Spannungsspitzen führt.Pursuing the above thought even more consistently, is proposed according to a further embodiment, to provide the recesses in such a way that the end of the tool on the machining side Connect the opposite longitudinal end of the recess. Thereby a certain flexibility of the base body is achieved, which leads to the avoidance of voltage peaks.
Zum Abbau der Schubspannungsspitzen im Bereich des bearbeitungsseitigen Endes wird vorgeschlagen, die Aussparungen als offene Nuten auszubilden. Bevorzugt verlaufen diese Nuten parallel zum Schneidkörper über den gesamten stirnseitigen Querschnitt des Werkzeuges. Unter Anwendung der Erkenntnis, dass, je mehr Schubspannungsspitzen abgebaut werden, desto grösser das Verhältnis zwischen Dicke des Schneidkörpers und Dicke des die Schneidkörper umstehenden Bereiches vom Grundkörper ist, beträgt die zwischen Ausnehmung und Nuten verbleibende Wandstärke des Grundkörpers vorzugsweise das 0,1- bis 0,8-fache der Breite der Ausnehmung. Es wird damit auch in diesem Bereich der Ausnehmung eine dem Abbau der Schubspannungsspitzen dienende Nachgiebigkeit des Grundkörpers erzielt.For reducing the shear stress peaks in the area of the machining side In the end it is suggested the recesses to be designed as open grooves. These preferably run Grooves parallel to the cutting body over the entire front Cross section of the tool. Using the Realization that the more shear stress peaks are reduced become, the greater the ratio between thickness of the Cutting body and thickness of the surrounding the cutting body Area of the base body is between the recess and grooves remaining wall thickness of the base body preferably 0.1 to 0.8 times the width of the recess. It is therefore also the one in this area of the recess Reduction of the shear stress peaks serving compliance Basic body achieved.
Das Wesen der Erfindung soll nunmehr anhand der einzelne Merkmale des erfindungsgemäßen Werkzeugs wiedergebenden Zeichnungen näher erläutert werden. Es zeigen:
- Fig. 1
- das bearbeitungsseitige Ende eines Werkzeuges mit unterschiedlich dicker Lotnaht;
- Fig. 2
- das bearbeitungsseitige Ende eines Werkzeuges mit Bohrungen;
- Fig. 3
- das bearbeitungsseitige Ende eines Werkzeuges mit Aussparung;
- Fig. 4
- das bearbeitungsseitige Ende eines Werkzeuges mit Nuten.
- Fig. 1
- the machining end of a tool with solder seam of different thickness;
- Fig. 2
- the machining end of a tool with holes;
- Fig. 3
- the machining end of a tool with a recess;
- Fig. 4
- the machining end of a tool with grooves.
Fig. 1 zeigt das bearbeitungsseitige Ende eines Bohr- und
Meisselwerkzeuges mit Grundkörper 1 und Schneidkörper 2. Zur
Aufnahme des Schneidkörpers 2 weist der Grundkörper 1 eine
Ausnehmung 3 auf. Zwischen der Ausnehmung 3 und dem Schneidkörper
2 befindet sich die Lotnaht 4.Fig. 1 shows the machining end of a drilling and
Chisel tool with
Wie aus der Fig. 1 zu entnehmen ist, weist die Lotnaht 4
entlang der parallel zur Hauptachse verlaufenden Länge eine
unterschiedliche Dicke derart auf, dass die Dicke an den
beiden Längsenden am grössten ist. Die unterschiedliche
Dicke der Lotnaht 4 kommt im gezeigten Beispiel dadurch
zustande, dass die Seitenwände der Ausnehmung 3 leicht
konvex gewölbt ausgebildet sind.As can be seen from FIG. 1, the solder seam 4
along the length parallel to the main axis
different thickness so that the thickness at the
is greatest at both longitudinal ends. The different
The thickness of the solder seam 4 comes in the example shown
that the side walls of the
Aus Fig. 2 ist ein bearbeitungsseitiges Ende eines Bohr- und
Meisselwerkzeuges ersichtlich, das einen Grundkörper 5 mit
einer Ausnehmung 7 aufweist, wobei in der Ausnehmung 7 ein
Schneidkörper 6 angeordnet ist. Zwischen Schneidkörper 6 und
Ausnehmung 7 besteht eine Lotnaht 8. Der Grundkörper 5 wird
von Bohrungen 9 durchsetzt, welchen die Funktion von Entlastungskerben
zukommt.From Fig. 2 is a machining end of a drilling and
Chisel tool can be seen that a
Ein bearbeitungsseitiges Ende eines weiteren Bohr- und Meisselwerkzeuges
zeigt Fig. 3 wiederum mit einem Grundkörper 10
und einem Schneidkörper 11 innerhalb einer Ausnehmung 12.
Eine Lotnaht 13 ist zwischen Schneidkörper 11 und Ausnehmung
12 angeordnet. Zur Erzielung der Wirkung von Entlastungskerben
ist entgegen dem bearbeitungsseitigen Ende anschliessend
an die Ausnehmung 12 eine Aussparung 14 vorgesehen, welche
den Grundkörper 10 durchsetzt. Aufgrund dieser Aussparung 14
ist am Grund der Ausnehmung 12 die Lotnaht 13 unterbrochen.A machining end of another drilling and
Das aus Fig. 4 entnehmbare bearbeitungsseitige Ende eines
Bohr- und Meisselwerkzeuges weist einen Grundkörper 15 mit
Ausnehmung 17 sowie darin angeordnetem Schneidkörper 16 auf.
Zwischen dem Schneidkörper 16 und der Ausnehmung 17 besteht
eine Notnaht 18. Der Grundkörper 15 weist im Bereich des bearbeitungsseitigen
Endes Nuten 19 auf, welche den Grundkörper
15 durchsetzen und zum bearbeitungsseitigen Ende hin offen
sind. Die zwischen der Ausnehmung 17 und den Nuten 19
verbleibende Wandstärke w ist geringer als die Breite b der
Ausnehmung 17, dh die Wandstärke w beträgt das 0,1- bis
0,8-fache der Breite b der Ausnehmung 17.The machinable end of FIG. 4 of a
The drilling and chiseling tool has a
Die vorstehend beschriebenen Ausführungsformen zeigen alle Beispiele, welche der Lösung der Aufgabe zur vorliegenden Erfindung dienen. Die Beispiele können an einem Bohr- und Meisselwerkzeug einzeln oder in geeigneter Kombination untereinander Anwendung finden, wobei eine Kombination den Vorteil hat, dass sich die vorteilhaften Wirkungen gegebenenfalls addieren.The embodiments described above all show Examples of the solution to the problem at hand Serve invention. The examples can be seen on a drilling and Chisel tools individually or in a suitable combination find application among themselves, a combination of which The advantage is that the beneficial effects add if necessary.
Claims (6)
- A drilling and chiselling tool having a main body (1, 5, 10, 15) which is made of steel and which has a recess (3, 7, 12, 17) open towards the machining end of the tool, which recess has sidewalls which extend substantially in an axial direction and which pass through a cross-section which is formed normal to the main axis of the main body, and having a cutting body (2, 6, 11, 16) which is made of hard metal and which is fixed in the recess (3, 7, 12, 17) in the main body (1, 5, 10, 15) by means of a soldered seam (4, 8, 13, 18) which is of varying thickness over its length which extends parallel to the main axis, characterised in that additional reliefs (9, 14, 19) are provided in the region of the longitudinal ends of the sidewalls of the recess (7, 12, 17) for the cutting body (6, 11, 16) in the main body (5, 10, 15), which reliefs extend normal to the main axis and parallel to the sidewalls and are free from solder.
- A tool according to claim 1, characterised in that the thickness of the soldered seam (4) increases towards its two longitudinal ends over its length which extends parallel to the main axis.
- A tool according to claim 1 or 2, characterised in that the reliefs are bores (9) which pass through the main body (5) in the region of the longitudinal end of the sidewalls remote from the machining end.
- A tool according to claim 1 or 2, characterised in that the reliefs (14) adjoin the longitudinal end of the recess (12) remote from the machining end and pass through the main body (10).
- A tool according to claim 1 or 2, characterised in that the reliefs are open channels (19) which pass through the main body (15) in the region of the machining end.
- A tool according to claim 5, characterised in that the wall thickness (w) of the main body (15) which remains between the recess (17) and the channels (19) amounts to 0.1 to 0.8 times the width (b) of the recess (17).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4114271 | 1991-05-02 | ||
| DE4114271A DE4114271A1 (en) | 1991-05-02 | 1991-05-02 | DRILLING AND CHISELING TOOL WITH BASIC BODY AND CUTTING BODY |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0516581A2 EP0516581A2 (en) | 1992-12-02 |
| EP0516581A3 EP0516581A3 (en) | 1993-07-07 |
| EP0516581B1 true EP0516581B1 (en) | 1998-07-15 |
Family
ID=6430780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92810283A Expired - Lifetime EP0516581B1 (en) | 1991-05-02 | 1992-04-16 | Drilling and chiselling tool with basic body and cutting element |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5265989A (en) |
| EP (1) | EP0516581B1 (en) |
| JP (1) | JP3426614B2 (en) |
| DE (2) | DE4114271A1 (en) |
| DK (1) | DK0516581T3 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4442266A1 (en) * | 1994-11-28 | 1996-05-30 | Hilti Ag | Tool with carrier body and cutting body |
| US5918105A (en) * | 1994-12-12 | 1999-06-29 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
| TW299385B (en) | 1994-12-12 | 1997-03-01 | Black & Decker Inc | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
| SE507542C2 (en) * | 1996-12-04 | 1998-06-22 | Seco Tools Ab | Milling tools and cutting part for the tool |
| US6250404B1 (en) | 1999-06-08 | 2001-06-26 | The Charles Machine Works, Inc. | Directional boring head |
| DE102013108233A1 (en) * | 2013-07-31 | 2015-02-05 | Drebo Werkzeugfabrik Gmbh | drill |
| JP6634301B2 (en) * | 2016-01-29 | 2020-01-22 | 株式会社技研製作所 | Cutter bit |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2101376A (en) * | 1934-10-09 | 1937-12-07 | Wallramit Handel Mij Nv | Percussive boring tool |
| DE671959C (en) * | 1937-08-25 | 1939-02-17 | Meutsch Voigtlaender & Co Vorm | Tool with hard metal cutting edges, in particular rock percussion drill |
| CH272188A (en) * | 1948-01-14 | 1950-12-15 | Sandvikens Jernverks Ab | Push drill bit with at least two carbide cutting inserts. |
| FR981182A (en) * | 1948-02-28 | 1951-05-23 | Sandvikens Jernverks Ab | Percussion drill bit crown |
| FR1006219A (en) * | 1947-12-05 | 1952-04-21 | Sharpener with extra hard insert | |
| DE765003C (en) * | 1941-10-19 | 1953-10-26 | Hartmetallwerkzeugfabrik Meuts | Tool with hard metal inserts or pads |
| FR1414023A (en) * | 1964-09-03 | 1965-10-15 | Forges & Ateliers Du Saut Du T | Tool consisting of a support and inserts held elastically in said support |
| DE2802119A1 (en) * | 1977-01-20 | 1978-08-03 | Boart Int Ltd | SOLDERING AND METHOD FOR ITS INSTALLATION |
| US4181187A (en) * | 1977-03-03 | 1980-01-01 | Sandvik Aktiebolag | Rock drill bit with stress relief insert sockets |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA631619A (en) * | 1961-11-28 | B. Baker John | Rock drill bit with inserts | |
| US2614813A (en) * | 1949-07-08 | 1952-10-21 | Ingersoll Rand Co | Rock drilling tool |
| US2628072A (en) * | 1949-09-01 | 1953-02-10 | Timken Roller Bearing Co | Drill bit having groove with hard metal cutter insert brazed therein |
| FR1051105A (en) * | 1951-03-01 | 1954-01-13 | Skf Svenska Kullagerfab Ab | Rock punch with hard metal tip |
| GB707021A (en) * | 1951-03-01 | 1954-04-07 | Skf Svenska Kullagerfab Ab | Improvements relating to rock drills |
| US2784943A (en) * | 1952-11-03 | 1957-03-12 | Sandvikens Jernverks Ab | Rock drill bit with cutting insert |
| CH357692A (en) * | 1959-10-13 | 1961-10-31 | Dionisotti Joseph | Rock drilling tool |
| DE3426977A1 (en) * | 1984-07-21 | 1986-01-30 | Hawera Probst Gmbh + Co, 7980 Ravensburg | ROCK DRILL |
-
1991
- 1991-05-02 DE DE4114271A patent/DE4114271A1/en not_active Withdrawn
-
1992
- 1992-04-16 DE DE59209416T patent/DE59209416D1/en not_active Expired - Fee Related
- 1992-04-16 EP EP92810283A patent/EP0516581B1/en not_active Expired - Lifetime
- 1992-04-16 DK DK92810283T patent/DK0516581T3/en active
- 1992-04-28 US US07/875,065 patent/US5265989A/en not_active Expired - Fee Related
- 1992-05-01 JP JP11283492A patent/JP3426614B2/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2101376A (en) * | 1934-10-09 | 1937-12-07 | Wallramit Handel Mij Nv | Percussive boring tool |
| DE671959C (en) * | 1937-08-25 | 1939-02-17 | Meutsch Voigtlaender & Co Vorm | Tool with hard metal cutting edges, in particular rock percussion drill |
| DE765003C (en) * | 1941-10-19 | 1953-10-26 | Hartmetallwerkzeugfabrik Meuts | Tool with hard metal inserts or pads |
| FR1006219A (en) * | 1947-12-05 | 1952-04-21 | Sharpener with extra hard insert | |
| CH272188A (en) * | 1948-01-14 | 1950-12-15 | Sandvikens Jernverks Ab | Push drill bit with at least two carbide cutting inserts. |
| FR981182A (en) * | 1948-02-28 | 1951-05-23 | Sandvikens Jernverks Ab | Percussion drill bit crown |
| FR1414023A (en) * | 1964-09-03 | 1965-10-15 | Forges & Ateliers Du Saut Du T | Tool consisting of a support and inserts held elastically in said support |
| DE2802119A1 (en) * | 1977-01-20 | 1978-08-03 | Boart Int Ltd | SOLDERING AND METHOD FOR ITS INSTALLATION |
| US4181187A (en) * | 1977-03-03 | 1980-01-01 | Sandvik Aktiebolag | Rock drill bit with stress relief insert sockets |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05124027A (en) | 1993-05-21 |
| DK0516581T3 (en) | 1999-04-19 |
| EP0516581A2 (en) | 1992-12-02 |
| US5265989A (en) | 1993-11-30 |
| DE59209416D1 (en) | 1998-08-20 |
| JP3426614B2 (en) | 2003-07-14 |
| DE4114271A1 (en) | 1992-11-05 |
| EP0516581A3 (en) | 1993-07-07 |
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