DE102018207070A1 - drilling - Google Patents

Abstract

The invention relates to a drilling tool, in particular a rock drill, which extends along a longitudinal axis, comprising a drill head, a spigot end, a base body, a sleeve element, a transport region which is arranged between the drill head and the spigot, at least one transport channel which extends along the transport region extends, wherein the transport channel is arranged radially between the sleeve member and the base body. It is proposed that the drilling tool has a damping unit which is designed to damp an impulse emanating from the main body.

Description

State of the art

In the DE 3237721 A1 describes a rock drill for cuttings extraction, wherein the rock drill has a drill stem with a longitudinal central bore. In order to create channels for the supply air and exhaust air, the drill shank on a sheath, so that between the drill shank and sheathing creates a free or cavity through which the Bohrstaub can be sucked.

Disclosure of the invention

The invention relates to a drilling tool, in particular a rock drill, which extends along a longitudinal axis, comprising a drill head, a spigot, a base body, a sleeve member, a transport region, which is arranged radially between the drill head and the insertion end, and at least one transport channel extends along the transport region, wherein the transport channel is arranged radially between the sleeve member and the base body. It is proposed that the sleeve element is rotatably mounted on the base body. Advantageously, a cost-producible and easy to clean drilling tool can be realized thereby.

The drilling tool is designed in particular as a rock drill, which is provided for a hammer drill. At its end facing away from the drill head, the drilling tool has an insertion end, which is designed for coupling to a hand tool, such as a hammer drill. Preferably, the drilling tool is designed in the region of the insertion end such that the drilling tool can be coupled to a tool receptacle of the hand tool machine. By way of example, the drilling tool can have form-locking elements designed as special grooves in the region of the insertion end, which form an SDS-plus interface or an SDS-max interface. For machining a workpiece, the drilling tool is set by means of the hammer drill in a rotating and linear oscillating or beating state. The drilling tool penetrates into the workpiece during machining in the feed direction of the drilling tool. The feed direction of the drilling tool runs coaxially to the longitudinal axis and starting from the insertion end in the direction of the drill head. The longitudinal axis of the drilling tool corresponds in particular to a working or rotational axis of the drilling tool. In this context, a drill head is to be understood as meaning, in particular, a region of the drilling tool which has at least one cutting body. The cutting body has at least one cutting element, which may be formed as a main cutting element or as a secondary cutting element. The cutting elements are formed in particular from a hard metal. Preferably, the cutting elements have a higher hardness than the main body. Each cutting element has at least one cutting edge. The cutting edge corresponds to the cutting line of a chip surface and an open surface of the cutting element. Preferably, each cutting element has a single cutting edge. Alternatively, the cutting element may also have a plurality of cutting edges, which merge in particular. In particular, the region of the drill head is clamped by the at least one cutting body. The transport channel is in particular designed to transport a fluid, preferably an air stream, within the drilling tool. The transport channel is preferably provided for the extraction of cuttings within a borehole during a drilling operation. The drill cuttings are preferably transported counter to the feed direction of the drilling tool. The transport channel has a suction opening and a suction opening, whose distance corresponds to the length of the transport channel. The transport channel may be eccentric or concentric. An eccentric or concentric transport channel should in particular be understood to mean a transport channel which extends to at least 70% of its length, preferably to at least 90% of its length, preferably substantially completely along its length, eccentrically or concentrically with the longitudinal axis of the drilling tool. The drill cuttings can enter the transport channel via the intake opening. Preferably, the drill head comprises at least one suction opening. The suction opening and the suction opening may be arranged substantially parallel to one another, preferably substantially perpendicular to one another. The cutting body preferably has at least two cutting elements, preferably at least four cutting elements. The connection of the cutting body with the drilling tool takes place in particular via a cohesive connection. Preferably, the drill head is designed as a solid carbide head, wherein a single cutting body is connected to at least one cutting element via a blunt surface with the body preferably via a welded joint. Alternatively, it is also conceivable that the drilling tool has cuts into which the at least one cutting body is inserted and in particular is connected via a solder joint. In this context, the welded connection differs from the soldered connection in that a partial melting of the components to be connected takes place in the welded connection. In particular, the connection region has at least one securing element, which is designed to connect the drilling tool with a suction adapter. Preferably, the Suction adapter in the connected state partially movable to the drilling tool, in particular movable to the base body of the drilling tool formed. In particular, the suction adapter is so axially immovable and rotatably connected, that the suction adapter is axially fixed on the drilling tool substantially and the drilling tool can rotate within the suction adapter. In particular, the suction adapter is fixed to the drilling tool with play. The suction opening is arranged in particular in the connection area. Preferably, the transport channel is partially arranged in the connection area. The main body is preferably materially connected to the drill head, in particular to the cutting body. Preferably, the base body intersects the longitudinal axis of the drilling tool. The main body is in particular at least partially, preferably completely axially on the drill head or on the cutting body. The main body is designed in particular for transmitting a shock pulse from the power tool to the drill head. The main body consists of a metallic material, in particular of a steel. The main body is in particular rotatably coupled to the insertion end. The base body may be formed integrally with the insertion ends. In particular, the sleeve member is formed as a tubular and elongate sheath disposed about the body. The sleeve member may rest against the base body, but it is also conceivable that a gap is formed radially between the sleeve member and the base body. The gap preferably has a size between 0.05 mm and 0.5 mm, in particular a size of substantially 0.3 mm. In particular, the base body and the sleeve element in the transport region are substantially parallel to one another. The sleeve member may be closed or partially open. A closed sleeve element should be understood to mean a sleeve element which completely encloses the base body at least in the transport area. A partially open sleeve element is to be understood as a sleeve element which surrounds the base body in the transport area in the circumferential direction by at least 180 °. A lateral surface of the sleeve element may be flat, with a uniform radial distance to the longitudinal axis or uneven with a non-uniform, in particular periodically varying, radial distance from the longitudinal axis. The sleeve element may consist of a metallic material or of a plastic-containing material. Preferably, the base body and the sleeve member made of the same material. Under a transport channel, which is arranged radially between the base body and the sleeve member, should be understood in particular that a straight line which intersects the longitudinal axis perpendicular, the base body, the transport channel and the sleeve member intersects in this order.

Furthermore, it is proposed that the transport channel is formed by a groove in the base body and / or in the sleeve element. Advantageously, a transport channel can be realized in a structurally simple manner. The groove may be arranged on the outside of the main body or on the inside of the sleeve member.

Furthermore, it is proposed that the sleeve element is rotatably connected to a suction adapter, wherein the suction adapter for connecting the drilling tool is formed with a suction device. Advantageously, the sleeve element can thereby be released and connected together with the suction adapter from the drilling tool or the base body. In particular, the sleeve member is immovably connected to the sleeve member.

In addition, it is proposed that the sleeve element with the suction adapter is positively and / or non-positively connected. Alternatively or additionally, it is proposed that the sleeve element is materially connected to the suction adapter or that the sleeve element and the suction adapter are integrally formed. It is conceivable, for example, for the sleeve element and the suction adapter to be produced in an injection molding process. Preferably, the sleeve member is used as an insert in the manufacture of the suction adapter via an injection molding process. The cohesive connection can take place, for example, via an adhesive connection, a solder connection or a welded connection.

Furthermore, it is proposed that the sleeve element is mounted on a securing element in at least one direction, in particular in two directions, axially on the base body. Advantageously, thereby the sleeve member can be stored safely on the body. The sleeve element can be mounted directly or indirectly on the base body via the securing element. The sleeve element is preferably mounted indirectly on the base body via the suction adapter. The drilling tool may have more than one securing element. For example, it is conceivable that the drilling tool has a first securing element, which is associated with the base body, and a second securing element, which is associated with the suction adapter. The securing element can be designed, for example, as a stop element that restricts or essentially prevents a movement possibility of the sleeve element along a degree of freedom, in particular along a translational degree of freedom. The fuse element may, for example, as a Forming element or be designed as a traction element. The securing element may be formed in one piece or in one piece with the drilling tool, in particular the base body of the drilling tool. By one piece is meant in particular also cohesively interconnected components. By one piece is intended to be understood, in particular, that all the elements associated with the component consist of the same material, there is no non-positive and / or positive connection between the elements and, in particular, there is no material connection. Alternatively, it is conceivable that the securing element is designed as a separate component.

Furthermore, it is proposed that the securing element is designed as a securing ring, which is arranged on the side facing away from the drill head of the sleeve member. Advantageously, the sleeve element can thereby be axially mounted in a structurally simple manner. The securing ring can be configured, for example, as a snap ring.

In addition, it is proposed that the securing element is non-positively and / or positively connected to the base body. In particular, the securing element is formed in one piece or in one piece with the suction adapter.

Furthermore, it is proposed that the suction adapter is designed to be deformable for producing and / or releasing the connection with the base body. Advantageously, a particularly simple assembly of the suction adapter can be realized on the drilling tool. Preferably, the suction adapter is made of an elastic material, in particular an elastic plastic. In addition, it is conceivable that the formability of the suction adapter specifically influences the deformability in a connection region, for example by means of a recess in the material.

Furthermore, the invention relates to a drilling tool, in particular a rock drill, which extends along a longitudinal axis, comprising a drill head, a plug-in end, a transport region, and at least one transport channel, which extends along the transport region. It is proposed that the drilling tool has a connection region in which a multipart suction adapter for connecting the drilling tool to a suction device is arranged. Advantageously, this allows a part of the suction adapter to be adapted specifically to the drilling tool, in particular to the size of the drilling tool, and the other part of the suction adapter can be universally designed so that it fits all specific parts.

In addition, it is proposed that the suction adapter has at least a first housing element and a second housing element, which can be connected to one another via a housing interface. In particular, the housing interface is designed such that the housing elements to be connected are always connected to one another with the same connection movement. Preferably, the housing interface is formed such that the interconnected housing elements are always connected together in the same end position. Alternatively, it is also conceivable that the housing interface is formed such that the housing elements can be connected to one another in different end positions.

Furthermore, it is proposed that the first housing element is non-positively and / or positively connected to a drilling element which rotates during operation relative to the suction adapter and / or linearly oscillates. The drilling element can be designed, for example, as a base body of the drilling tool or as a sleeve element of the drilling tool.

Furthermore, it is proposed that the first housing element is permanently attached to the drilling element. Under a non-detachable connection of the first housing member to the drilling element is to be understood in particular that the connection is possible only by means of a tool or preferably only by means of damage or destruction of a component. In particular, the first housing element is permanently connected to the sleeve element.

In addition, it is proposed that the housing interface is designed for non-positive and / or positive connection. In particular, these have the first housing element and the second housing element to each other corresponding connecting elements. In this case, mutually corresponding connecting elements should be understood to mean at least two connecting elements which are designed to establish a connection with each other. The connecting elements can be designed, for example, as non-positive elements, as interlocking elements, as guide elements, as latching elements, etc.

Furthermore, it is proposed that the housing interface comprises at least one latching element and / or at least one hook-and-loop fastener element. Advantageously, thereby a flexible connection can be realized in a simple manner.

In addition, it is proposed that the second housing element has a second housing interface, which is designed to connect the suction adapter with a suction device. The second housing interface is designed in particular as a suction device interface. The first housing interface and the second housing interface are preferably arranged on opposite sides of the second housing element. The second housing interface preferably has non-positive and / or positive locking elements for releasable coupling of the suction device.

Furthermore, the invention relates to a multi-part suction adapter for a drilling tool as described above.

Furthermore, the invention relates to a drilling tool, in particular a rock drill, which extends along a longitudinal axis, comprising a drill head, a spigot, a base body, a sleeve member, a transport region disposed between the drill head and the spigot, at least one transport channel extending extends along the transport region, wherein the transport channel is arranged radially between the sleeve member and the base body. It is proposed that the drilling tool has a damping unit which is designed to damp an impulse emanating from the main body. Advantageously, thereby the wear of the drilling tool can be effectively reduced. The transport channel can be formed by a groove in the base body and / or in the sleeve member. In this case, an impulse emanating from the main body should in particular be understood as an impulse which is transmitted via the insertion end by a drive movement which is transmitted from the tool receptacle of the handheld power tool to the drilling tool, in particular to the main body of the drilling tool. The pulse to be damped is in particular a striking movement formed parallel or coaxial with the longitudinal extension of the drilling tool, which is used, for example, in a hammer drill mode or in a chisel mode of a hammer drill or percussion hammer for driving the drilling tool.

In addition, it is proposed that the damping unit is designed to damp an impulse acting on a suction adapter. Additionally or alternatively, it is conceivable that the damping unit is designed to damp a pulse acting on the sleeve element. Advantageously, the wear between the base body and the suction adapter or the sleeve element can thereby be reduced.

Furthermore, it is proposed that the damping unit has at least one first damping element, which bears against the base body and / or on the sleeve element or on the suction adapter. The first damping element is preferably designed as a B-impact damping element. A B-impact damping element should be understood to mean, in particular, a damping element that dampens a pulse proceeding from the base body counter to the feed direction of the boring train. Furthermore, it is proposed that the damping unit has a second damping element, which is arranged in particular in the longitudinal direction adjacent to the first damping element. The second damping element is preferably designed as an A-impact damping element. An A-impact damping element should be understood in particular to mean a damping element that dampens an impulse starting from the base body along the feed direction of the boring train. Preferably, at least one of the damping elements, preferably all damping elements, is arranged concentrically to the longitudinal axis of the drilling tool.

In addition, it is proposed that at least one of the damping elements is designed as a circular or oval-shaped rubber element. The damping element may be formed, for example, as an O-ring. Alternatively, it is also conceivable that the damping element is designed as a Teflon sleeve or as a Teflon ring.

Furthermore, it is proposed that at least one of the damping elements is designed as a spring element. In this context, a spring element is to be understood in particular as meaning a component which is elastically deformable in such a way that the momentum emanating from the base body is at least partially absorbed via the deformation. The spring element may be formed from a metallic material or from a plastic. The spring element is designed in particular as an annular spring. By way of example, the spring element may be substantially cylindrical or conical.

Furthermore, it is proposed that at least one of the damping elements is designed as a gas spring element. A gas spring element should in particular be understood to mean a pneumatic spring in which a gas volume in a defined space is under high pressure. Advantageously, a high damping effect can be realized with a small footprint by a gas spring element.

In addition, it is proposed that at least one of the damping elements is formed in one piece or in one piece with the suction adapter. Advantageously, this can be realized in a cost effective manner damping.

Furthermore, the invention relates to a system or a tool system comprising a drilling tool and a suction adapter, wherein the Drill along a longitudinal axis, a drill head, a spigot, a transport region, which is arranged between the drill bit and the insertion end, and at least one transport channel, which extends along the transport region, wherein an outer diameter of the transport region is different from an outer diameter of the spigot, having. It is proposed that the drilling tool has a connection region in which the suction adapter is arranged, wherein the connection region overlaps with the transport region and the insertion end. Advantageously, can be dispensed with a separate coupling region, as is known in the art, and the drilling tool can thus be manufactured inexpensively and material-saving. By overlapping in this context is to be understood, in particular, that the connection region overlaps axially with the transport region and with the insertion end, and thus along the longitudinal axis of the drilling tool. In this case, an outer diameter of the transport region should be understood as meaning, in particular, an outer diameter in the transport region which is constant between the intake opening and the suction opening of the transport channel at least along 50%, preferably at least along 70%, preferably at least 90%, of the length of the transport channel. Particularly preferably, an outer diameter of the base body of the drilling tool in an area in which the base body has at least one groove forming a transport channel is to be understood as the outer diameter of the transport area. An outer diameter of the insertion end should in particular be understood to mean an outer diameter which corresponds to an outer diameter of the region of the drilling tool which is arranged in the tool receptacle of the handheld power tool in the state connected to the handheld power tool. In particular, the outer diameter of the insertion end is a standardized outer diameter.

Furthermore, it is proposed that the suction adapter comprises a first coupling region and a second coupling region, wherein the first coupling region overlaps with the transport region and the second coupling region overlaps with the insertion end. Preferably, the first coupling region and the second coupling region are formed differently. In particular, the suction adapter is connected in the first coupling region and in the second coupling region with the drilling tool. In particular, the connection of the suction adapter with the drilling tool in the first coupling region takes place in a different way than in the second coupling region.

In addition, it is proposed that the first coupling region has at least one connecting element, which is designed for non-positive and / or positive connection of the suction adapter with the drilling tool. Furthermore, it is proposed that the second coupling region has at least one connecting element, which is designed for non-positive and / or positive connection of the suction adapter with the drilling tool. In particular, at least one of the connecting elements of the suction adapter is designed to produce a positive connection in the axial direction. Preferably, both connecting elements of the suction adapter are designed to produce a positive connection in the radial direction.

Furthermore, it is proposed that the drilling tool has a connecting element in the transport region, which corresponds to the connecting element of the suction adapter in the first coupling region. In addition, it is proposed that the connecting element of the drilling tool extends radially outward. The connecting element is arranged in particular in the transport area and / or in the connection area. The connecting element has a coupling diameter which corresponds to its outer diameter. The coupling diameter is formed in particular larger than the outer diameter of the transport region.

Furthermore, it is proposed that the transport channel is arranged radially between a sleeve element and a base body of the drilling tool and that the connecting element of the drilling tool is formed as a collar of the sleeve member or as a materially connected disc element. Advantageously, this can be realized in a cost effective manner, a connecting element.

In addition, it is proposed that the system comprises a second boring tool, wherein an outer diameter of the insertion end of the second boring tool corresponds to the outer diameter of the insertion end of the first boring tool and the outer diameter of the transport region of the second boring tool is different from the outer diameter of the transport region of the first boring tool, characterized in that the suction adapter is connectable to the first drilling tool and to the second drilling tool. In particular, both the first drilling tool and the second drilling tool have a connecting element, wherein the ratio between the coupling diameter of the first drilling tool and the outer diameter of the insertion end of the first drilling tool substantially the ratio between the coupling diameter of the second drilling tool and the outer diameter of the insertion end of the second Drill corresponds. Advantageously, the same suction adapter can thus be connected to both drilling tools.

Furthermore, the invention relates to a drilling tool or a suction adapter as described above.

Furthermore, the invention relates to an Anbohrabsaughilfsvorrichtung for a trained as a suction drill drill, which is formed axially movable with the drilling tool connectable. Advantageously, the intake of cuttings by the drilling tool can be improved by the Anbohrabsaughilfsvorrichtung. Under a suction drill is to be understood in particular a drilling tool with a transport channel. The drilling tool has an intake opening, which is preferably arranged in the drill head, at the transition between the drill head and the main body or adjacent to the drill head. The Anbohrabsaughilfsvorrichtung invention is particularly intended to support the Anbohrvorgangs with suction drills, in which the at least one suction opening of the transport channel spaced from the frontal tip of the drill head is arranged. The length of the drill head corresponds to the distance between the tip of the drill head and a joining surface of the cutter body of the drill head which extends transversely or perpendicular to the longitudinal axis of the drill tool. A suction opening arranged at a distance from the tip of the drill head should in particular be understood as meaning a distance between the tip of the drill head and the suction opening which corresponds to at least 30%, preferably at least 60%, preferably at least 90% of the length of the drill head. The Anbohrabsaabsilfsvorrichtung is in particular one piece, preferably in one piece, formed. In particular, the Anbohrabsaughilfsvorrichtung no connection interface to any type of suction device.

In particular, the Anbohrabsaabsilfsvorrichtung is axially movably connected to the drilling tool that the Anbohrabsaabsilfsvorrichtung is displaced in the connected state between a position in the transport area and a position in the region of the drill head. Preferably, the Anbohrabsaabsilfsvorrichtung is axially movably mounted on the drilling tool, that the Anbohrabsaabsilfsvorrichtung changes its position during the drilling operation relative to the drill head and maintains relative to the workpiece.

In addition, it is proposed that the Anbohrabsaughilfsvorrichtung is designed so elastically deformable that the connection of the Anbohrabsaughilfsvorrichtung takes place with the drilling tool via an elastic deformation. Advantageously, a connection between the Anbohrabsaughilfsvorrichtung and the drilling tool can be realized in a simple manner. The elastic deformation may be, for example, a stretching, stretching or spreading of the Anbohrabsaughilfsvorrichtung.

Furthermore, it is proposed that the Anbohrabsaabsilfsvorrichtung is formed at least partially slotted. Preferably, a slot formed thereby extends parallel to the longitudinal extension of the drilling tool. Advantageously, the Anbohrabsaughilfsvorrichtung be spread in the region of the slot for connection to the drilling tool.

Alternatively or additionally, it is proposed that the Anbohrabsaughilfsvorrichtung is designed in several parts, in particular has two housing halves. The individual parts of the Anbohrabsaughilfsvorrichtung or the housing halves can be formed connected to each other for example via a clip connection or via a screw.

It is also proposed that the Anbohrabsaabsilfsvorrichtung a connection portion, via which the Anbohrabsaughilfsvorrichtung is mounted on the drilling tool, and a suction portion, which is adapted to partially enclose a drill head of the drilling tool during drilling, having.

In addition, it is proposed that the connection section has a connection element which rests on the drilling tool in the connected state. In particular, the connecting element is in the connected state on at least two opposite sides of the drilling tool. Preferably, the connection element is formed as a hollow cylindrical contact surface, which is arranged on the radially inner side of the Anbohrabsaughilfsvorrichtung.

Furthermore, it is proposed that the suction section has an inner diameter which is larger than an inner diameter of the connection section. Advantageously, the drill head can thereby be enclosed by the Anbohrabsaughilfsvorrichtung.

Furthermore, it is proposed that the suction section has teeth on the front side. The toothing is designed in particular as an axial toothing. Advantageously can be realized on the teeth on air intake.

list of figures

Further advantages emerge from the following description of the drawing. The drawings, the Description and claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations. Reference numerals of features of different embodiments of the invention which substantially correspond to each other are given the same number and a letter characterizing the embodiment.

• 1 eine schematische Seitenansicht eines Werkzeugsystems mit einem Bohrwerkzeug, einer Handwerkzeugmaschine und einer Absaugvorrichtung;
• 2a eine perspektivische Ansicht einer ersten Ausführungsform des Bohrwerkzeugs;
• 2b einen Teilschnitt durch das Bohrwerkzeug gemäß 2a;
• 2c einen Querschnitt durch das Bohrwerkzeug gemäß 2a im Transportbereich;
• 2d einen Querschnitt durch das Bohrwerkzeug gemäß 2a im Anschlussbereich;
• 3 einen Längsschnitt einer zweiten Ausführungsform des Bohrwerkzeugs;
• 4 einen Querschnitt durch eine dritte Ausführungsform des Bohrwerkzeugs im Transportbereich;
• 5a einen Längsschnitt einer vierten Ausführungsform des Bohrwerkzeugs;
• 5b einen Längsschnitt einer fünften Ausführungsform des Bohrwerkzeugs;
• 5c einen Längsschnitt einer fünften Ausführungsform des Bohrwerkzeugs;
• 5d ein Querschnitt einer sechsten Ausführungsform des Bohrwerkzeugs im Anschlussbereich;
• 5e eine perspektivische Ansicht einer siebten Ausführungsform des Bohrwerkzeugs im unmontierten Zustand;
• 5f einen Querschnitt durch das Bohrwerkzeug gemäß 5e;
• 5g einen Querschnitt einer achten Ausführungsform des Bohrwerkzeugs;
• 6a eine perspektivische Ansicht eines mehrteiligen Absaugadapters einer neunten Ausführungsform des Bohrwerkzeugs;
• 6b eine perspektivische Ansicht eines mehrteiligen Absaugadapters einer zehnten Ausführungsform des Bohrwerkzeugs;
• 6c eine perspektivische Ansicht eines mehrteiligen Absaugadapters einer elften Ausführungsform des Bohrwerkzeugs;
• 7a einen Teilschnitt einer zwölften Ausführungsform des Bohrwerkzeugs;
• 7b eine perspektivische Ansicht eines Grundkörpers des Bohrwerkzeugs gemäß 7a;
• 7c eine perspektivische Ansicht eines Hülsenelements des Bohrwerkzeugs gemäß 7a;
• 8 einen Teilschnitt einer dreizehnten Ausführungsform des Bohrwerkzeugs;
• 9 einen Teilschnitt einer vierzehnten Ausführungsform des Bohrwerkzeugs;
• 10 einen Teilschnitt einer fünfzehnten Ausführungsform des Bohrwerkzeugs;
• 11a eine perspektivische Ansicht einer sechszehnten Ausführungsform des Bohrwerkzeugs;
• 11b einen Längsschnitt eines ersten Bohrwerkzeugs gemäß der Ausführungsform der 11a;
• 11c einen Längsschnitt eines zweiten Bohrwerkzeugs gemäß der Ausführungsform der 11a;
• 12 einen Längsschnitt einer alternativen Ausführungsform des Hülsenelements gemäß 11a;
• 13 einen Längsschnitt einer alternativen Ausführungsform eines Absaugadapters;
• 14a eine perspektivische Ansicht eines Bohrwerkzeugs mit einer Anbohrabsaughilfsvorrichtung;
• 14b einen Längsschnitt der Anbohrabsaugshilfsvorrichtung gemäß 14a.

Show it:

• 1 a schematic side view of a tool system with a drilling tool, a power tool and a suction device;
• 2a a perspective view of a first embodiment of the drilling tool;
• 2 B a partial section through the drilling tool according to 2a ;
• 2c a cross section through the drilling tool according to 2a in the transport sector;
• 2d a cross section through the drilling tool according to 2a in the connection area;
• 3 a longitudinal section of a second embodiment of the drilling tool;
• 4 a cross section through a third embodiment of the drilling tool in the transport area;
• 5a a longitudinal section of a fourth embodiment of the drilling tool;
• 5b a longitudinal section of a fifth embodiment of the drilling tool;
• 5c a longitudinal section of a fifth embodiment of the drilling tool;
• 5d a cross section of a sixth embodiment of the drilling tool in the connection area;
• 5e a perspective view of a seventh embodiment of the drilling tool in the unmounted state;
• 5f a cross section through the drilling tool according to 5e ;
• 5g a cross section of an eighth embodiment of the drilling tool;
• 6a a perspective view of a multi-part suction adapter of a ninth embodiment of the drilling tool;
• 6b a perspective view of a multi-part suction adapter of a tenth embodiment of the drilling tool;
• 6c a perspective view of a multi-part suction adapter of an eleventh embodiment of the drilling tool;
• 7a a partial section of a twelfth embodiment of the drilling tool;
• 7b a perspective view of a base body of the drilling tool according to 7a ;
• 7c a perspective view of a sleeve member of the drilling tool according to 7a ;
• 8th a partial section of a thirteenth embodiment of the drilling tool;
• 9 a partial section of a fourteenth embodiment of the drilling tool;
• 10 a partial section of a fifteenth embodiment of the drilling tool;
• 11a a perspective view of a sixteenth embodiment of the drilling tool;
• 11b a longitudinal section of a first drilling tool according to the embodiment of 11a ;
• 11c a longitudinal section of a second drilling tool according to the embodiment of 11a ;
• 12 a longitudinal section of an alternative embodiment of the sleeve member according to 11a ;
• 13 a longitudinal section of an alternative embodiment of a suction adapter;
• 14a a perspective view of a drilling tool with a Anbohrabsaughilfsvorrichtung;
• 14b a longitudinal section of the Anbohrabsaugshilfsvorrichtung according to 14a ,

Description of the embodiments

In 1 is a schematic view of a tooling system 200 shown. The tool system 200 includes a drilling tool 10 , a hand tool 300 and a suction device 400 , The hand tool machine 300 is exemplified as a hammer drill. The hand tool machine 300 has a tool holder 302 on which to pick up a as a drilling tool 10 trained insert tool is formed. The hand tool machine 300 has an unillustrated drive unit comprising an electric motor and a transmission comprising a pneumatic percussion mechanism. About the drive unit and the gearbox, the drilling tool 10 in the coupled state rotatory about one longitudinal axis 12 of the drilling tool 10 and linearly oscillating or striking along the longitudinal axis 12 are driven.

The drilling tool 10 is designed as a rock drill and in 2a shown in an enlarged perspective view. In addition, the drilling tool 10 in 2 B shown in a partial section. The drilling tool 10 is particularly intended to drill a hole in a workpiece 14 , which is exemplified as a masonry to produce. The borehole is over a beating movement of the drilling tool 10 along the longitudinal axis 12 and a rotary movement of the drilling tool 10 around the longitudinal axis 12 generated. The drilling tool 10 has an insertion end 16 on, that for coupling the drilling tool 10 with the hand tool 300 is trained. The insertion end 16 is formed substantially cylindrical. The tool holder 302 the hand tool machine 300 has jaws, not shown, in the coupled state with the insertion 16 of the drilling tool 10 are connected. Alternatively, it is also conceivable that the insertion end 16 Has positive locking elements, which are formed as elongated grooves and a standardized interface, such as SDS-plus or SDS-max are assigned. Starting from the insertion end 16 has the drilling tool 10 along its longitudinal extension a connection area 20 for connecting the drilling tool 10 with a suction adapter 100 , a transport area 22 and a drill head 24 on. The front end of the drilling tool 10 is from the drill head 24 and the rear end of the drilling tool 10 gets from the insertion end 16 educated.

The suction adapter 100 is via a suction hose 402 with the example designed as an industrial vacuum suction device 400 connected. The suction adapter 100 is formed in several parts and has a first housing element 102 and a second housing member 104 on top of a case interface 106 connected to each other. The suction adapter 100 and the drilling tool 10 are rotatably connected relative to each other.

The drill head 24 is formed as a solid carbide head and has a single cutting body 28 on. The cutting body 28 is on a frontal blunt surface of a body 32 of the drilling tool 10 welded. The cutting body 28 includes four cutting elements 30 , in particular two main cutting elements and two secondary cutting elements. The cutting body 28 is formed star-shaped or cross-shaped, with the cutting elements 30 starting from the center of the cutter body 28 extend radially outward. The cutting body 28 is integrally formed. The drill head 24 has a tip formed as a centering tip 26 which protrudes so frontally that they are first in contact with the workpiece 14 comes. The drilling tool 10 points in the transport area 22 a basic body 32 and a sleeve member 34 on. Radially between the main body 32 and the sleeve member 34 are transport channels 36 arranged for the removal of cuttings from the wellbore. The transport channels 36 extend along the longitudinal axis 12 completely through the transport area 22 , The transport channels 36 have suction openings 38 , about the cuttings during the production of the borehole in the transport channel 36 enters, and suction 40 over which the cuttings transport channels 36 leaves, on.

The main body 32 has four outboard grooves 42 on, which are straight and parallel to the longitudinal axis 12 through the transport area 22 extend. The grooves 42 are at their the drill head 24 facing the end axially open, at its the drill head 24 opposite end are the grooves 42 axially closed and radially outwardly opening. The grooves become radial 42 in the transport area 22 through the sleeve element 34 completed in such a way that the transport channels 36 in the transport area 22 are closed in the circumferential direction. The sleeve element 34 is formed closed in the circumferential direction. The sleeve element 34 has a constant inner diameter. The transport channels 36 each have a cross-sectional area 43 which is essentially constant. The cross-sectional area 43 of the transport channel 36 is preferred over the entire transport area 22 constant education. In other words, the profile of the transport channel 36 a substantially straight skeleton line up. In particular, the skeleton line is substantially along the entire transport channel 36 preferably between the suction port 38 and the suction opening 40 , formed substantially straight. Alternatively, it is also conceivable that the grooves 42 spiral around the longitudinal axis 12 extend.

In 2c is a cross section through the transport area 22 of the drilling tool 10 shown. The four transport channels 36a have the same size cross-sectional areas 43 on. The sleeve element 34 lies in this embodiment on the body 32 at. Thus, the cuttings can not move between the transport channels. Alternatively, however, it is also conceivable that the radially between the sleeve member 34 and the body 32 a gap (not shown) is arranged. The gap may, for example, have a size of 0.3 mm. About the gap, the cuttings between the transport channels 36 move. Advantageously, through the gap of the connection process between the sleeve member 34 and the body 32 be improved.

The intake opening 38 is in the area of the drill head 24 arranged. In particular, the suction port 38 at the top 26 opposite side of the drill head 24 arranged. The intake opening 38 is through the axially open end of the transport channel 36 educated. In particular, the suction port 38 in the transition area between the transport area 22 and the drill head 24 arranged. The intake opening 38 extends substantially perpendicular to the longitudinal axis 12 of the drilling tool 10 , In particular, the suction opening opens 38 in the feed direction of the drilling tool 10 Forward. The suction opening is so from the drill head 24 or the cutting body 28 limited that the suction port 38 smaller than the cross-sectional area 43 of the transport channel 36 is in the adjacent area.

The sleeve element 34 is rotatable relative to the main body 32 educated. The sleeve element 34 is non-rotatable with the suction adapter 100 , in particular with the first housing element 102 the suction adapter 100 , connected. The sleeve element 34 is exemplified molded from a metallic material and cohesively with the existing of a plastic suction adapter 100 connected. The cohesive connection takes place via an adhesive bond. Alternatively, it would also be conceivable that the sleeve element 34 and the suction adapter 100 be produced via a multi-component injection molding process. It would also be conceivable that both the sleeve element 34 as well as the suction adapter 100 are made of a plastic, in particular are made in one piece from the same plastic.

The sleeve element 34 is shorter than the transport channels 36 forming grooves 42 educated. At the front, the drill head 24 facing, end close the sleeve element 34 and the main body 32 essentially at the same height and thus form the intake openings 38 , At the back, the insertion end 16 facing, the ends extend the grooves 42 in the main body 32 over the sleeve element 34 and thus form the suction openings 40 of the drilling tool 10 , The suction openings 40 open substantially perpendicular to the suction openings 38 or radially to the longitudinal axis 12 of the drilling tool 10 , The cross-sectional area 43 of the transport channel 36 decreases in the connection area 20 , in particular in the region of the suction opening 40 , The grooves 42 close in particular axially by a curved or rounded shape. Im with the suction adapter 100 connected state are the suction holes 40 of the drilling tool 10 inside the suction adapter 100 arranged.

The suction adapter 100 is via a connection interface 108 with the drilling tool 10 , in particular with the basic body 32 of the drilling tool 10 , connected. In 2c is a cross section through the connection interface 108 shown. Via the connection interface 108 becomes the drilling tool 10 with the suction adapter 100 connected in such a form-fitting manner that during operation the drilling tool 10 inside the suction adapter 100 rotates or rotates and oscillates linearly. The first housing element 102 the suction adapter 100 has a cylindrical recess in which the drilling tool 10 in the connected state. The cylindrical recess is partially of a contact surface 110 limited in the connected state on the drilling tool 10 is applied. The contact surface 110 is exemplary cylindrical and is located on the body 32 of the drilling tool 10 ,

The connection interface 108 has, for example, two mutually corresponding securing elements 44 . 112 on, over which the first housing element 102 the suction adapter 100 axially on the body 32 of the drilling tool 10 is secured. The first security element 44 is the drilling tool 10 assigned. The first security element 44 is formed as an annular groove in the body 32 of the drilling tool 10 is arranged. The first security element 44 is in the feed direction of the drilling tool 10 in front of the transport channel 36 arranged. The second security element 112 is the suction adapter 100 assigned. The second security element 112 is designed as a form-fitting element and exemplified as a metal plate. The suction adapter 100 exemplifies two security elements 112 on. The security elements 112 can with the suction adapter 100 be connected cohesively and / or non-positively and / or positively. In this embodiment, the suction adapter 100 two receiving pockets 114 on which, to receive the security elements 112 are formed. About the receiving pockets 114 can the fuse elements 112 from the outside into the suction adapter 100 , in particular in the first housing element 102 the suction adapter 100 to be inserted. The connection takes place in this embodiment, a material fit via an adhesive bond. However, it would also be conceivable that the receiving bag 114 has a tapered profile to the fuse element 112 frictionally absorb. Furthermore, it would also be conceivable that the formed as a metal plate fuse elements 112 already in the manufacturing process of the existing plastic suction adapter 100 be connected by the metal plates are used as an insert by injection molding. In the connected state of the drilling tool 10 with the suction adapter 100 the metal plates are partially arranged in the groove such that a rotation of the body 32 relative to the suction adapter 100 or the sleeve element 34 is possible and an axial movement of the body 32 relative to the suction adapter 100 or the sleeve element 34 is essentially prevented. Advantageously, both consist of securing elements 44 . 112 forming components made of a metallic material in order to achieve the longest possible durability.

The suction adapter 100 , and thus the sleeve element 34 , are detachable with the main body 32 of the drilling tool 10 connected. A releasable connection should be understood in this context, in particular a tool-releasable connection. Advantageously, with a blockage of the transport channels 36 the sleeve element 34 from the main body 32 be solved, eliminating the transport channel 36 is exposed and can be cleaned. For this purpose, the suction adapter 100 , in particular the first housing element 102 the suction adapter 100 , at least partially elastic. Preferably, the suction adapter 100 designed so elastic that in the connected state by a force on the suction adapter 100 a relative movement between the two security elements 112 and / or one of the security elements 112 to a fixed area of the suction adapter 100 , in particular of the first housing element 102 , is possible. By way of example, the first housing element 102 a slot 116 on, which is the first housing element 102 partially in two housing sections 118 shares, which are relatively movable. The slot 116 is preferably arranged centrally and preferably extends parallel to the longitudinal axis 12 of the drilling tool 10 , Furthermore, the housing sections 118 one handle element each 119 which is designed to simplify handling. Each one of the security elements 112 is with one of the housing sections 118 connected so that a force on the first housing element 102 the suction adapter 100 the two housing sections 118 , and thus the two security elements 112 , Can be moved away from each other and thus the positive connection between the suction adapter 100 and the drilling tool 10 or the sleeve element 34 and the body 32 can be solved.

Is the insertion end 16 as in this embodiment, integral with the body 32 of the drilling tool 10 formed, so the sleeve member 34 with the suction adapter 100 only on the main body 32 of the drilling tool 10 be deferred if an outside diameter 17 the insertion end is smaller than an outer diameter 23 of the transport area 22 ,

In 2d is a section through the two-piece suction adapter 100 shown. The housing interface 106 over which the first and the second housing element 102 . 104 are interconnected, is formed by way of example to form a locking connection. The first housing element 102 has an undercut element 120 in, in which an example designed as a latching arm locking element 122 of the second housing element 104 intervenes. The locking element 122 is preferably integral with the second housing member 104 educated. The second housing element 104 is preferably formed of a plastic. To the undercut between the undercut element 120 and the locking element 122 To solve, the locking element 122 be pushed away by a user directly. Preferably, the second housing element 104 at least one actuating element 124 on, about the position of the locking elements 122 is changeable. The actuators 124 are mechanical with the locking elements 122 connected. In particular, the actuators 124 such with the locking elements 122 connected, that a force acting on the actuating element inwardly a movement of the locking element 122 causes to the outside. The actuators 124 are integral with the second housing element 104 educated. The actuators 124 are as a marked outer region of the second housing element 104 trained so that it is recognizable to the user, at which point the operation has to be done. In the field of actuators 124 is the second housing element 104 formed hollow inside, in particular, the wall thickness in the range of actuators 124 reduced. In addition, the suction adapter 100 , in particular the second housing element 104 the suction adapter 100 , a second housing interface 126 on, for coupling the suction adapter 100 with a suction device 400 is trained. The second housing interface 126 is exemplified as a conically shaped cavity formed with a suction hose 402 a suction device 400 is connectable. However, there are other connection options with a suction device 400 or a suction hose 402 a suction device 400 conceivable, such as a bayonet lock. The first and the second housing interface 106 . 126 are on different sides of the second housing element 104 arranged. The suction hose is preferred 402 such in the suction adapter 100 added that he is up in the range of actuators 124 protrudes, whereby the second housing element 104 is amplified and actuation of the actuators 124 is prevented. This can ensure that no unintentional release of the two housing elements 102 . 104 from each other.

In 3 is schematically an alternative embodiment of the drilling tool 10 according to 2a shown in which an outer diameter 17a a plugin 16a larger than an outer diameter 23a of the transport area 22a , In This embodiment is a sleeve member 34a also rotatable to a base body 32a of the drilling tool 10a formed in the connected state. The sleeve element 34a is cohesive with a suction adapter 100a connected and as previously described axially on the body 32a secured (not shown). The main body 32a is formed in two parts, wherein a first body part 33a in the transport area 22a is arranged and a second body part 35a the insertion end 16a forms. The first basic body part 33a is with the second body part 35a non-positively and positively connected, in particular via a joint formed as a thread 37a connected. The joint 37a is preferably designed such that the two main body parts 33a . 35a are releasably connected together. To the transport area 22a To clean thus can first the insertion 16a from the transport area 22a be solved and in a second step, the connection between the suction adapter 100a and the body 32a be solved to the transport channels 36a expose.

In 4 is a cross section through a transport area 22b an alternative embodiment of the drilling tool 10 according to 2a-d shown. The drilling tool 10b differs from the drilling tool 10 in the embodiment of the transport channels 36b , The transport channels 36b are radially between a body 32b and a sleeve member 34b arranged. The main body 32b is in the transport area 22b of the drilling tool 10b formed cylindrical, wherein the lateral surface of the main body 32b has no grooves.

The sleeve element 34b has webs 39b on, which extend radially inward. In particular, the webs are 39b at least partially on the body 32b at. The bridges 39b extend along the longitudinal axis 12b of the drilling tool 10b over the entire transport area 22b consistently, so between the bars 39b one transport channel each 36b is formed. The sleeve element 34b is made in this embodiment of a plastic material and preferably integrally formed with a suction adapter, not shown, in particular a first housing element of a suction adapter. The main body 32b is made of a metal.

In 5a to 5h are alternative embodiments of the drilling tool 10 according to 2a-d shown, where always the transport channels 36c-j radially between a base body 32c-j and a sleeve member 34c-j are arranged, with the drilling tools 10c-j in the connection of the suction adapter 100c-j differ. The sleeve elements 34c-j are rotatable to the main body 32c-j connected and rotationally fixed with the suction adapter 100c-j connected. The suction adapter 100c-j can be made in one piece or as described above in several parts.

In the embodiment according to 5a is the sleeve element 34c tubular and formed at its the drill head 24c formed opposite end bent outwards so that forms a collar. The sleeve element 34c is formed of a metallic material. The sleeve element 34c is cohesive and non-rotatable with the suction adapter 100c connected. The suction adapter 100c is one-piece and made of a plastic. The suction adapter 100c is with the main body 32c of the drilling tool 10c via a connection interface 108c connected. The connection interface 108c has two mutually corresponding securing elements 44c . 112c on, over which the suction adapter 100c axially on the body 32c of the drilling tool 10c is secured. The first security element 44c is the drilling tool 10c assigned. The first security element 44c is formed as an annular groove in the body 32c of the drilling tool 10c between the insertion end 16c and the transport area 22c is arranged. The second security element 112c is the suction adapter 100c assigned. The second security element 112c is as a locking element 128c formed in the form of a detent ball. The locking element 128c is linearly movable in the suction adapter 100c stored, in particular radially to the longitudinal axis 12c of the drilling tool 10c stored. The locking element 128c consists of an example of a metallic ball 130c and a spring 132c that the ball 130c acted upon with a force. The feather 132c is so between the ball 130c and a housing part of the suction adapter 100c arranged that the ball 130c in the direction of the main body 32c of the drilling tool 10c is applied with a force and when connecting the suction adapter 100c in the form of a groove securing element 44c of the drilling tool 10c snaps. The connection interface 108c exemplifies two second security elements 112c on, which are formed opposite to each other. However, it is also conceivable that the connection interface 108c only a second security element 112c or more than two second security elements 112c having.

In the embodiment according to 5b is the sleeve element 34d tubular formed with a constant outer diameter. The sleeve element 34d is formed of a metallic material. The sleeve element 34d is cohesive and non-rotatable with the suction adapter 100d connected. The suction adapter 100d is one-piece and made of a plastic. The suction adapter 100d is with the main body 32d of the drilling tool 10d via a connection interface 108d connected. The connection interface 108d instructs fuse element 134d on, about the suction adapter 100d axially on the body 32d of the drilling tool 10d is secured. The fuse element 134d is as a circlip 136d , For example, a snap ring formed. For connecting the suction adapter 100d with the drilling tool 10d becomes the suction adapter 100d with the sleeve element 34d ahead over the insertion end 16d on the main body 32d of the drilling tool 10d postponed. Is the suction adapter 100d Arrived at its end position, is in the feed direction behind the suction adapter 100d the circlip 136d on the body 32d appropriate. The circlip 136d becomes non-positively and axially immovable on the body 32d of the drilling tool 10d attached. The circlip 136d stores the suction adapter 100d in the axial direction.

In the embodiment according to 5c is the sleeve element 34e tubular. The sleeve element 34e is made of a plastic and integral with the suction adapter 100e educated. The suction adapter 100e is with the main body 32e of the drilling tool 10e via a connection interface 108e connected. The connection interface 108e has two mutually corresponding securing elements 44e . 112e on, over which the suction adapter 100e axially on the body 32d of the drilling tool 10e is secured. The first security element 44e is the drilling tool 10e assigned. The first security element 44e is formed as an annular groove in the body 32e of the drilling tool 10e between the insertion end 16e and the transport area 22e is arranged. The second security element 112e is the suction adapter 100e assigned. The second security element 112e is integral with suction adapter 100e educated. Preferably, the second securing element 112e as a nose 138e formed, extending radially in the direction of the longitudinal axis 12e of the drilling tool 10e extends. In particular, the suction adapter 100e two second security elements 112e on, which are arranged opposite to each other. There are also alternative arrangement conceivable, such as adjacent to each other. It is also conceivable that the suction adapter 100e more than two second security elements 112e or only a single second fuse element 112e having. The suction adapter 100e is designed so elastic that by a force on the suction adapter 100e the position of the second securing elements 112e and / or whose shape is changeable. In the connected state are as noses 138e trained security elements 112e in engagement with the first securing element designed as an annular groove 44e of the drilling tool 10e , To release the connection can advantageously by applying force to an outer surface of the suction adapter 100e the radial position of the noses 138e with respect to the longitudinal axis 12e be changed so that the noses 138e move out of the annular groove and the connection can be solved.

In 5d is another embodiment of the connection interface 108f in a cross section through a suction adapter 100f shown. The sleeve element 34f is formed of a metallic material and cohesively and rotationally fixed with the suction adapter 100f connected. The suction adapter 100f is multi-part and made of a plastic. Shown here is only a first housing element 102f , which is formed connectable with a second housing element, not shown. The connection can be made via a housing interface 106 as described above, or as will be described in the following embodiments, take place. It is also conceivable, the suction adapter 100f to train in one piece.

The connection interface 108f has two mutually corresponding securing elements 112f on, over which the suction adapter 100f axially on the body 32f of the drilling tool 10f is secured. The first securing element (not shown) is assigned to the drilling tool and formed as an annular groove in the base body (not shown) of the drilling tool. The second security element 112f is the suction adapter 100f assigned. For connection of the first housing element 102f with the main body of the drilling tool as in the previous embodiments, the suction adapter 100f with the sleeve element 34f pushed forward over the insertion end on the body. The main body is in a recess of the first housing element 102f taken up, extending through the first housing element 102f extends through and thereby at least partially a substantially circular cross-section 140f having. The circular cross section 140f is particularly adapted to the outer geometry of the body. Thus, the recess or the cross section 140f the recess at least partially of contact surfaces 110 limited, where the suction adapter 100f when connecting or in the connected state rests on the drilling tool. The second security elements 112f the connection interface 108f are as metal plates 142f formed, which partially overlap with the recess. The metal plates 142f have a thickness which substantially corresponds to the width of the first securing element designed as an annular groove. The suction adapter 100f exemplifies two second security elements 112f on, which are arranged opposite to each other. The second security elements 112f are in particular arranged such that they are in the cross section 140f protrude the recess. The second security elements 112f can cohesively with the suction adapter 100f be connected or Alternatively, be designed as inserts in an injection molding process. In the connected state, the metal platelets are arranged in the annular groove of the drilling tool and thus prevent axial movement of the suction adapter 100f relative to the drilling tool.

The suction adapter is advantageous 100f , in particular the first housing element 102f , so elastically formed that over a pressure 143f on the outer surface of the suction adapter 100f the second securing element 112f are movable radially outward so that they and the first securing element are disengaged. The pressure 143f takes place in the embodiment shown substantially perpendicular to the direction of movement of the second securing elements 112f , The required elasticity can be provided by way of example via the choice of material or the choice of the plastic. It is also conceivable that the suction adapter 100f material weaknesses 144f , For example in the form of further recesses which are connected to the recess, so that the suction adapter 100f in this area is more elastic and easier to deform.

In the embodiments according to the 5e - j indicates the suction adapter 100 in contrast to the previous embodiments no firmly connected second securing element 112 but it gets in an extra step with a third fuse element 146 the axial fuse made.

In 5e is in a perspective view a material fit with a suction adapter 100 g connected sleeve element 34g shown. The suction adapter 100 g is designed in several parts. The suction adapter 100 g , in particular the first housing element 102g the suction adapter 100 g , Has a fuse element receptacle 148g on that for receiving a third security element 146g is trained. The sleeve element 34g is detachably connectable to a base body 32g a drilling tool 10g formed, which at its rear end a Einsteckende 16g has and at its front end a drill head 24g is attached via a welded joint. The main body 32g has straight grooves 42g which extend from the front end to the rear end and before the insertion end 16g end up. Between the grooves 42g and the insertion end 16g indicates the basic body 32g a trained as an annular groove first fuse element 44g on. The connection is made in a first step by sliding the sleeve member 34g on the main body 32g about the insertion end 16g , The sleeve element 34g is pushed so far until the fuse element receptacle 148g in the area of the first fuse element 44g is positioned. For axial securing is now in a second step, the third securing element 148g , which is formed as a clip, on the fuse element receptacle 148g with the first fuse element 44g engaged. Advantageously, the inner contour of the fuse element holder extends 148g at least partially conical, to provide a traction between the suction adapter 100 g , in particular the securing element receiving 148g , and the third securing element 146g manufacture. However, it is also conceivable that the third securing element 146g from a second housing element 104g the suction adapter 100 g in the fuse element holder 148g is held over a positive connection (see 5f) ,

The first security element 44g , the fuse element holder 148g and the third securing element 146g form a connection interface 108g , In 5f is a cross section through the connection interface 108g shown in the connected state. The trained as a clip third security element 146g surrounds the body 32g of the drilling tool 10g pliers in the region of the annular groove and lies partially radially in the annular groove on the base body 32g at. A relative movement in the axial direction is prevented by the clip by the clip both a drill stop area 150g in which the clip is axially on the base body 32g , in particular on the diameter extension of the body 32g immediately adjacent to the annular groove, abuts, as well as an adapter stopper area 152g , in which the clip on the suction adapter 100 g , in particular on the first housing element 102g the suction adapter 100 g , strikes, has.

In 5g is an alternative embodiment of the third securing element 146h in a cross section through the connection interface 108h shown. The third security element 146h differs from the security element described above 146h essentially by the connection of the third securing element 146h with the suction adapter 100h , which is positive and positive. The third security element 146h is formed of a metallic material and the suction adapter made of a plastic, which preferably has a minimum elasticity. For non-positive and positive connection, the fuse element 146h laterally projecting arms 154h on, in corresponding pockets 156h in the suction adapter 100h , in particular in the first housing element 102h the suction adapter 100h , are arranged and thus form an undercut. The arms have an oblique to the connecting direction extending outer contour 155h on. The outer contour 155h is exemplified pyramid-shaped. Both when inserting the clip in the fuse element holder 148h the suction adapter 100h when also when loosening the clip from the suction adapter 100h is due to the elasticity of the suction adapter 100h and the oblique outer contour 155h the poor 154h the suction adapter 100h partially spread. To release the connection between the third securing element 146h and the suction adapter 100h To facilitate, the third securing element has 146h advantageously a recess 157h on. The recess 157h is exemplary rectangular and formed on the body 32h arranged away from the clip side. About a not shown hook-shaped tool, in the recess 157h engages, the clip can be solved easily.

In 5h is another alternative embodiment of the port interface 108 shown. The first security element 44i is as an annular groove in a body 32i of the drilling tool 10i trained and the suction adapter 100i has two cylindrical securing element receptacles 148i on, which allows for the inclusion of two third security elements 146i are formed. The third security elements 146i are as a pin 158i trained and are non-positively in Absaugadapter 100i held. The pins 158i are in the connected state on two opposite sides in the annular groove of the drilling tool 10i arranged so that a rotational movement is possible but an axial movement of the body 32i relative to the suction adapter 100i is prevented. Preferably, the suction adapter 100i Housing openings (not shown) whose size or diameter is smaller than the diameter of the pins 158i , via which by means of a tool, such as a small thin needle, the pins 158i from the fuse element holder 148i are solvable.

In 5i is an alternative embodiment of the pin 158i trained third fuse element 146i shown. The two third security elements 146j are connected together at one of their ends. In particular, the two third securing elements 146j formed in one piece and U-shaped, wherein the ends of the third securing element 146j one pin element each 159j form.

In 6a to 6c are alternative embodiments of the multi-part suction adapter 100 shown. The suction adapter 100k . 1001 . 100m differ in particular in their housing interface 106k . 1001 . 100m ,

In the embodiment according to 6a has the multi-part suction adapter 100k a first housing element 102k and a second housing member 104k on top of the housing interface 106k connected to each other. The first housing element 102k is as in the embodiments previously with a sleeve member 34k rotatably connected and is connectable to a base body (not shown) of a drilling tool. The housing interface 106k is adapted to a Velcro connection between the first housing element 102k and the second housing member 104k manufacture. The housing interface 106k has two Velcro elements 160k . 161k on, which correspond to each other and which are adapted to enter into a Velcro connection with each other. The first hook and loop fastener element 160k is exemplified as a hook and loop fastener, the second hook and loop fastener element 161k is exemplified as a Velcro tape with loops. The first and second hook-and-loop fastener elements 160k . 161k are on the second housing element 104k attached. The first hook and loop fastener element 160k is on a first page 162k of the second housing element 104k attached. The first hook and loop fastener element 160k is advantageously movable on the second housing element 104k attached. The second Velcro element 161k is on a second page 163k of the second housing element 104k attached. In particular, the second hook and loop fastener element 161k immovable on the second housing element 104k attached. The first and the second page 162k . 163k of the housing element 104k lie opposite each other and form outer surfaces of the suction adapter 100k , For the preparation of the connection, first the first housing element 102k to the second housing element 104k created and then the movable Velcro element 161k around the first housing element 102k looped and with the immovable Velcro fastener element 161k connected. By connecting the two Velcro elements 161j . 162k becomes the first housing element 102k on the second housing element 104k held.

In the embodiment according to 6b has the multi-part suction adapter 1001 a first housing element 1021 and a second housing member 1041 on top of the housing interface 1061 connected to each other. The first housing element 1021 is as in the embodiments previously with a sleeve member 341 rotatably connected and is connectable to a base body (not shown) of a drilling tool. The housing interface 1061 is adapted to a frictional connection between the first housing element 1021 and the second housing member 1041 manufacture. The suction adapter 1001 has two opposite sides 1621 . 1631 on, which are each formed as outer surfaces. On each of the pages 1621 . 1631 has both the first and the second housing element 1021 . 1041 a holding means 1651 on. The holding means 165 are exemplified identical. The holding means 1651 extend bolt-shaped from the suction adapter 1001 out. The holding means 1651 show at their free end 1661 a button-like Extension on, at the diameter of the holding means 1651 is extended. For establishing the connection between the first and the second housing element 1021 . 1041 each become a holding means 1651 of the first housing element 1021 and a holding means 1651 of the second housing element 1041 with an elastic connecting means 1671 connected with each other. The elastic connecting means 1671 may be exemplified as a rubber ring or rubber band. In the connected state is by the elastic connection means 1671 the first housing element 1021 in the direction of the second housing element 1041 acted upon by a force such that the two housing elements 1021 . 1041 be held together. By the button-like extension at the free end 1661 of the holding agent 1651 be ensured advantageous that the elastic connection means 1671 does not slip out of engagement.

In the embodiment according to 6c has the multi-part suction adapter 100m a first housing element 102m and a second housing member 104m on top of the housing interface 106m connected to each other. The first housing element 102m is as in the embodiments previously with a sleeve member 34m rotatably connected and is connectable to a base body (not shown) of a drilling tool. The suction adapter 100m is in 6c shown in a disconnected state. The housing interface 106m the suction adapter 100m has a leadership unit 168m and a fuse unit 169m on. The leadership unit 168m has a few guide rails 170m and a few to the guide rails 170m corresponding guide grooves 171m on. The guide rails 170m are exemplary of the first housing element 102m assigned and the guide grooves 171 are exemplary of the second housing element 104m assigned. Preferably, the guide rails 170m and the guide grooves 171m integral with the first housing element 102m or the second housing element 104m educated. For making the connection between the first housing element 102m and the second housing member 104m becomes the second housing element 104m along a guide direction 172m in the first housing element 102 , in particular on the guide rails 170m of the first housing element 102m , postponed. The direction of leadership 172m is exemplary parallel to a longitudinal axis of a drilling tool (not shown). However, it is also conceivable that the leadership direction 172m the longitudinal axis of the drilling tool crosses or runs perpendicular to it. The fuse unit 169m is designed to the two housing elements 102 . 104m locked in the connected state and thus secure against loosening. The fuse unit 169m has a linearly movable operating element 173m on, on the second housing element 104 , in particular on the outer surface of the second housing element 104m , is arranged. The fuse unit 169m advantageously has a non-illustrated restoring element, which is the operating element 173m acted upon in the direction of a locking position with a force. The return element is exemplified as a spring. The operating element 173m is in the direction of leadership 172m in front of the guide grooves 171m arranged. Due to the force effect of the return element, the operating element moves 173m at the end of the sliding of the second housing element 104m automatically upwards into a locking position. In the locking position is the operating element 173m frontally on the first housing element 102m at. The operating element 173m thus forms in the locking position a stop which prevents the two housing elements 102m . 104 relative to each other along the guide direction 172m move. By means of a force against the force of the return element, a user can lock by the operating element 173m solve and the two housing elements 102m . 104m separate each other. Alternatively, it is also conceivable that the first housing element 102m at its the second housing element 104m one side facing the operating element 173m has corresponding pocket into which the operating element 173m engaged in the connected state. The operating element 173m is exemplary on the rear, a drill head facing away from the suction adapter 100m arranged. However, it is also conceivable that the operating element 173m is arranged on a rear side or laterally. The operation of the operating element 173m is preferably perpendicular to the guide direction 172m , Alternatively, however, would be other directions of actuation, such as parallel to the guide direction 172m conceivable.

In 7a is an alternative embodiment of a drilling tool 10n shown in a partial section. The drilling tool 10n has an insertion end 16n , a connection area 20n , a transport area 22n and a drill head 24n on. In the transport area 22n are radially between a body 32n and a sleeve member 34n transport channels 36n arranged parallel to a longitudinal axis 12n of the drilling tool 10n through the transport area 22n extend. In particular, the transport channels 36n eccentric to the longitudinal axis 12n of the drilling tool 10n arranged and thus cut the longitudinal axis 12n Not. The main body 32n and the sleeve member 34n are in 7b and in 7c shown in a perspective view. The transport channels 36n be through grooves 42n formed, the straight line in the main body 32n of the drilling tool 10n and in particular eccentric to the longitudinal axis 12n run. The grooves 42n begin at the front, the drill head 24n facing the end of the body 32n and ends in the area of the transition to the insertion end 16n , The drill head 24n is formed as a solid carbide head and has a single cutting body 28n on. The cutting body 28n is on a frontal blunt surface of the body 32n of the drilling tool 10n welded. The cutting body 28n includes four cutting elements 30n extending from the center of the cutter body 28n extend radially outward. The cutting body 28n is integrally formed. The main body 32n and the sleeve member 34n are in contrast to the previous embodiments rotatably and releasably connected to each other. The insertion end 16n is integral with the main body 32n educated. During operation of the drilling tool 10n is a drive movement starting from a tool holder 302 a hand tool 300 about the insertion end 16n on the main body 32n transfer. By a positive connection between the body 32n and the sleeve member 34n is a torque in the direction of rotation of the body 32n on the sleeve element 34n transfer. The non-rotatable connection between the body 32n and the sleeve member 34n takes place by means of a first positive connection region 46n and a second positive engagement region 48n , The first form-locking area 46n is in the area of the drill head 24n arranged. In the first form-fit area 46n In particular, a positive connection between the sleeve member 34n and the drill head 24n educated. The sleeve element 34n indicates at its the drill head 24n facing frontal end a toothing 50n on, which is designed in particular as an axial toothing. The gearing 50n is by axial recesses 51n educated. The axial recesses 51n have a width 52n on, which is essentially the width of the cutting elements 30n of the cutting body 28n correspond. Between the recesses 51n protrudes the sleeve element 34n between the cutting elements 30n axially into the drill head 24n into it. Advantageously, thereby the suction 38n by drilling cuttings into the transport channels during the drilling process 36n be sucked, compared to the embodiment according to 1 continue towards the top of the drill head 24n positioned, which improves the uptake of the drill cuttings during tapping. The sleeve element 34n has an outer diameter that is smaller than an envelope of the drill head, which ensures that when drilling always the cutting body 28n is in contact with the material to be processed.

The second form-locking area 48n is exemplary in the area between the transport area 22n and the insertion end 16n arranged. In the second form-locking area 48n show the basic body 32n and the sleeve member 34n mutually corresponding positive locking elements 54n . 56n on. The positive locking elements 54n . 56n are exemplary as mutually corresponding gears 55n . 57n formed, which are designed in particular as a radial toothing. That over the intake openings 38n absorbed cuttings leave the transport channels 36n via suction openings 40n , The suction openings 40n are as cross holes in the sleeve element 34n educated. The suction openings 40n are in the connected state radially outside of the grooves 42n in the main body 32n arranged. The grooves 42n extend over the suction holes 40 out in the direction of the insertion end 16n and thus form the teeth 55n formed positive-locking elements 54n of the basic body 32n , The sleeve element 34n points to his the drill head 24n opposite end of a corresponding toothing 57n as positive locking element 56n on. About the form-locking elements 54n . 56n becomes a torque from the main body 32n on the sleeve element 34n transfer. Axial is the sleeve element 34n on the body 32n also about that as a gearing 57n formed positive locking element 56n of the sleeve element 34n between two axial bearings 61n . 62n stored. The first depository 61n is in the feed direction of the drilling tool 10n behind the second depository 62n arranged. The first depository 61n gets hit by a stop 58n of the basic body 32n formed, on which the positive-locking element 56n of the sleeve element 34n is applied. The stop 58n is exemplified by a sudden diameter taper of the body 32n in the region of the positive-locking element 54n of the basic body 32n educated. In particular, the basic body 32n in the area where the grooves 42n the positive-locking element 54n form a smaller outer diameter than in the region in which the grooves 42n the transport channels 36n form. The second depository 62n is through a circlip 64n educated. The circlip 64n is exemplified as a snap ring. In the connected state, this is the drill head 24n opposite end face 65n of the sleeve element 34n on the circlip 64n at. By loosening the locking ring 64n Advantageously, the sleeve member 34n from the main body 32n of the drilling tool 10n be solved to the transport channels 36n to uncover and clean.

Alternatively, it is also conceivable that the rotationally fixed and detachable connection of the main body 32n with the sleeve element 34n only over the first form-locking area 46n or only over the second positive engagement region 48n is realized.

In the connection area 20n has the drilling tool 10n a one-piece suction adapter 100n on that with the sleeve element 34n connected via an O-ring (not shown). The O-ring is in an internal annular groove 164n the suction adapter 100n held. The suction adapter 100n becomes the connection with the drilling tool 10n as long as the sleeve element 34n deferred until the suction adapter 100n on the sleeve element 34n locks. The sleeve element 34n has for this purpose an annular groove 66n on, in the feed direction in front of the suction 40n is arranged.

In 8th is a partial longitudinal section through an alternative embodiment of the drilling tool 10n shown. The drilling tool 10o is essentially identical to the drilling tool 10n formed, however, additionally has a damping unit 66o which is adapted to receive an impulse from the main body 32o on the sleeve element 34o is transmitted to attenuate. Advantageously, the wear of drilling tools, in which the sleeve element is not materially connected to the base body, can be significantly reduced. The drilling tool 10o according to 8th has a second positive engagement region 48o on, over which the sleeve element 34o with the main body 32o connected is. The second form-locking area 48o includes as already described one as a gearing 55o trained positive-locking element 54o that the body 32o is assigned, and as a toothing 57o trained positive-locking element 56o that the sleeve element 34o is assigned to. In addition, has drilling tool 10o a first and a second axial bearing 61o . 62o on.

The first depository 61o is in the feed direction of the drilling tool 10o behind the second depository 62o arranged. The first depository 61o gets hit by a stop 58o of the basic body 32o educated. The stop 58o is due to a sudden diameter taper of the body 32o in the region of the positive-locking element 54o of the basic body 32o educated. In particular, the basic body 32o in the area where the grooves 42o the positive-locking element 54o form a smaller outer diameter than in the region in which the grooves 42o the transport channels 36o form. The second depository 62n is through a circlip 64n educated. The circlip 64n is exemplified as a snap ring. The damping unit 68o includes at least one damping element 69o , By way of example, the damping unit comprises 68o two damping elements 69o , 70o. The damping unit 68o is especially in the field of axial bearings 61o . 62o arranged, wherein a first damping element 69o the first depository 61o assigned and the second damping element 70o the second depository 62o assigned. Preferably, the damping unit comprises 68o per axial bearing point 61o . 62o at least one damping element 69o , The damping elements 69o , 70o are elastic, in particular as rubber rings or O-rings, formed.

In the area of the first axial bearing point 61o is designed as a rubber ring first damping element 69o concentric with a longitudinal axis 12o of the drilling tool 10o arranged. The first damping element 69o is arranged such that the sleeve member 34n on the body 32n axially in particular in the feed direction over the first damping element 69o is applied. In particular, the damping element 69o arranged such that as a toothing 57o formed positive locking element 56o of the sleeve element 34o axially not directly, but via the first damping element 69o at the stop 58o of the basic body 32o is applied. In the area of the second axial bearing point 62o is designed as a rubber ring second damping element 70o concentric with the longitudinal axis 12o of the drilling tool 10o arranged. The second damping element 69o is arranged such that the sleeve member 34n on the circlip 64o axially, in particular not counter to the feed direction directly, but via the second damping element 70o , is present. In particular, the second damping element 70o arranged such that as a toothing 57o formed positive locking element 56o of the sleeve element 34o axially over the second damping element 70o at the stop 58o of the basic body 32o is applied. Alternatively, it is also conceivable that a front end facing away from the drill head (not shown) 65o of the sleeve element 34o axially over the second damping element 70o on the circlip 64o is applied. The trained as rubber rings damping elements 69o . 70o can loose on the body 32o be arranged. Alternatively, it is also conceivable that designed as rubber rings damping elements 69o . 70o on the body 32o are clamped so that they are frictionally on the body 32o are attached.

In 9 and 10 are two alternative embodiments of the damping unit 68o according to 8th shown. The drilling tool 10p according to 9 and the drilling tool 10q according to 10 are essentially identical to the drilling tool 10o according to 8th trained and distinguished by the design of the damping units 68p . 68q ,

The damping unit 68p according to 9 has two damping elements 69p . 70p on, which are designed as spring elements. The spring elements are exemplified as in particular metallic annular springs. The damping elements designed as spring elements 69p . 70p lie axially on two opposite sides of the positive-locking element 56p of the sleeve element 34p and dampen one during operation of the drilling tool 10p from the main body 32p outgoing impulse on the sleeve element 34p ,

The damping unit 68q according to 10 has two damping elements 69Q . 70q on, which are designed as gas spring elements. The gas spring elements are exemplified as air springs. The formed as a gas spring elements damping elements 69Q . 70q lie axially on two opposite sides of the positive-locking element 56q of the sleeve element 34q and dampen one during operation of the drilling tool 10q from the main body 32q outgoing impulse on the sleeve element 34q , The gas spring elements are in particular by a sealed cavity 71q between the sleeve element 34q and the body 32q educated. In particular, the cavity 71q sealed so that the pressure of the air inside the cavity 71q by a relative movement of the basic body 32q relative to the sleeve element 34q , Especially in a linear oscillating movement of the body 32q , changes. Preferably, the damping elements 69Q . 70q formed such that the sleeve member 34q not on the body during operation 32q strikes, whereby the wear is minimized. By the pressure change or the compression of the air in the cavity 71q the pulse is advantageously damped on the sleeve member 34q transfer. To seal the cavity 71q to optimize, points the drilling tool 10q sealing elements 72q on, radially between the sleeve member 34q and the body 32q are arranged.

The sealing elements 72 are exemplified as rubber rings. The drilling tool 10q has, by way of example, three sealing elements 72q on. The first sealing element 72q is in the area of the first axial bearing point 61q arranged, in particular in the region of the base body 32q arranged in which the grooves (not shown) of the main body 32q the transport area 22q form. The second sealing element 72q is in the second form-locking area 48q , in particular between the positive-locking elements 54q . 56q arranged. The third sealing element 72q is in the range of the second axial bearing point 62q , in particular between the circlip 64q and the sleeve member 34q arranged. Advantageously, by the sealing elements 72q the effectiveness of designed as a gas spring elements damping elements 70q . 71q be improved.

In 11a to 11c is a system of a first drilling tool 10r and a second drilling tool 10r ' shown, the drilling tool 10r . 10r ' designed for drilling holes of different sizes and with the same suction adapter 100r are connectable.

In 11a is the first drilling tool 10r shown in a perspective view along its longitudinal axis 12r a shank end 16r , a transport area 22r and a drill head 24r having. The drilling tool 10r has a basic body 32r on, the spanking 16r forms and from the spit 16r to the drill head 24r extends. The main body 32r has grooves on its outer surface 42r up, straight from the drill head 24r facing end beginning in the direction of the insertion end 16r extend. The drill head 24r has a cutting body 28r on, the cohesively via a welding process on a blunt, frontally arranged joining surface of the body 32r connected to this. In the transport area 22r has the drilling tool 10r a sleeve element 34r on, which is exemplified cohesively connected to the body. The cohesive connection can take place, for example, via a welded connection or via a soldered connection. The sleeve element 34r is rotatable with the body 32r connected. Alternatively, it would also be conceivable that the connection is non-positive and / or positive fit and / or the sleeve member 34r rotatable on the body 32r is stored. The sleeve element 34r closes the grooves 42r of the basic body 32r so off in the transportation area 22r closed transport channels 36r form.

The drilling tool 10r is with a suction adapter 100r releasably connected. In 11b is a longitudinal section through the first drilling tool 10r and through the suction adapter 100r shown in the connected state. The suction adapter 100r is exemplified in one piece. The suction adapter 100r has a housing interface 126r on, for example, as a particular conical cavity and for connection to a suction hose 402 a suction device 400 is trained. However, it is also conceivable that the suction adapter 100r is formed in several parts as previously described. The insertion end 16r has an outer diameter 17r up, extending from an outside diameter 23r of the transport area 22r different. In particular, the outer diameter 23r of the transport area 22r larger than the outer diameter 17r of the insertion 16r , The outer diameter 17r The insertion end is usually standardized, such as an outer diameter of 10 mm for an SDS-plus drill stem or an outer diameter of 18 mm for an SDS-max drill stem. Under an outer diameter 23r of the transport area 22r should in particular a diameter of the body 32r be understood in the area in which the transport channel 36r is formed closed. The suction adapter 100r is in a connection area 20r arranged in which the transport area 22r and the insertion end 16r overlap. In the connection area 20r has the suction 100r a first coupling area 174R and a second coupling region 176R on, wherein the first coupling region 174R with the transport area 22r and the second coupling region 176R with the insertion end 16r overlaps. In particular, the first coupling region 174R in the area of the drill head 24r zugewandten opening of the suction adapter 100r and the second coupling region 176R in the region of an opening of the suction adapter facing the 16r 100r arranged. In the coupling areas 174R . 176R is the suction adapter 100r with the main body 32r and / or the sleeve member 34r connected, in particular non-positively and / or positively connected.

In the first coupling area 174R is the suction adapter 100r positive fit with the drilling tool 10r , in particular with the sleeve element 34r of the drilling tool 10r connected. For this purpose, the suction adapter 100r exemplary in the first coupling area 174R a as a groove, in particular an internal annular groove, formed connecting element 175R on. The sleeve element 34r points to the connecting element 175R of the first coupling area 174R corresponding connecting element 74r on. The connecting element 74r is exemplary one piece with the sleeve member 34r educated. Preferably, the sleeve member 34r on his the drill head 24r bent end formed bent, so that the connecting element 74r of the sleeve element 34r is designed as a collar. The collar extends radially outward. The suction adapter 100r is made of an elastic plastic and is used to connect the suction adapter 100r with the drilling tool 10r about the insertion end 16r on the drilling tool 10r postponed. The suction adapter 100r is in the first coupling area 174R so elastically shaped that the suction adapter 100r in the first coupling area 174R initially slightly deformed or extended to the collar formed as a connecting element 74r in the formed as a groove connecting element 175R engages and thus a positive connection is made. In the first coupling area 174R has the drilling tool 10r a coupling diameter 180r on. The coupling diameter 180r corresponds to an outer diameter of the connecting element 74r of the drilling tool 10r , The coupling diameter 180r is larger than the outside diameter 23r of the transport area 22r ,

In the second coupling area 176R has the drilling tool 10r another connecting element 177R on. The connecting element 177R is as a contact surface 178R formed, which is exemplified hollow cylindrical. The hollow cylindrical bearing surface 178R has an inner radius that is substantially the outer radius 17r of the insertion 16r equivalent. During operation of the drilling tool 10r Guide the drilling tool 10r a rotating and / or linear oscillating movement relative to the suction adapter 100r by. As a result, the first and the second connecting element form 175R . 177R in particular also a sliding bearing in which the drilling tool 10r is stored.

In 11c is the second drilling tool 10r ' shown in a longitudinal section. The second drilling tool 10r ' has substantially the same structural features as the first drilling tool 10r but differs in dimensioning. In particular, the dimensioning of the second drilling tool 10r ' designed such that the second drilling tool 10r ' for drilling smaller holes than the first drilling tool 10r is trained. In particular, the transport area 22r ' a smaller outer diameter 23r ' and a smaller diameter of the drill head 24r ' on, as the drill tool 10r , By way of example, the outer diameter corresponds 23r ' of the transport area 22r ' of the second drilling tool 10r ' essentially the outer diameter 17r ' of the insertion 16r ' of the second drilling tool 10r ' , The second drilling tool 10r ' is with the same suction adapter 100r like the first drilling tool 10r connectable. Because the insertion end 16r ' is standardized, is no adjustment of the drilling tool 10r ' , in particular of the basic body 32r ' , in the second coupling area 176R ' necessary. The second connection element 74r ' is also formed as a collar which extends radially outwardly. The second connection element 74r ' is advantageously shaped such that by the second connecting element 74r ' formed coupling diameter 180r ' of the second drilling tool 10r ' the coupling diameter 180r of the first drilling tool 10r essentially corresponds. In particular, a difference between the coupling diameter 180r and the outside diameter 23r of the transport area 22r at the first drilling tool 10r smaller than the second drilling tool 10r ' , This can ensure that the suction adapter 100r both with the first drilling tool 10r as well as with the second drilling tool 10r ' is connectable.

In 12 is an alternative embodiment of the sleeve member 34r according to 11 shown. The sleeve element 34s is cohesively with a formed as a hollow disk connecting element 74s connected. The cohesive connection can be done for example by gluing, soldering or welding. The connecting element 74s is at the front end of the sleeve member 34s arranged. Alternatively, it is also conceivable that the connecting element 74s on the outer surface of the sleeve member 34s is arranged. The connecting element 74s extends in the radial direction over the sleeve member 34s out. The with the sleeve element 34s related connecting element 74s has a coupling diameter 180s which is larger than an outer diameter 23s a transport area 22s ,

In 13 is an alternative embodiment of the suction adapter 100r according to 11 shown in a longitudinal section. The suction adapter 100t is exemplary with a drilling tool 10r according to 11 connected. The suction adapter 100t has a first coupling region 174T and a second coupling region 176t on. In the first coupling area 174T has the suction adapter 100t a movably mounted, in particular about a rotation axis 182T rotatably mounted, connecting element 175t on. The connecting element 175t is hook-shaped and in the connected state forms the connecting element 175t and the connecting element formed as a collar 74r of the drilling tool 10r a form fit. To release the positive connection is the hook-shaped connecting element 175t around the axis of rotation 182T turned. Advantageously, the rotatably mounted connecting element 175t from a spring, not shown, with a force in the connecting direction 183t applied. The second coupling area 176t essentially corresponds to the second coupling region 176R according to 11 , Advantageously, in this embodiment, the suction adapter 100t be made of a less elastic and therefore more stable plastic.

In 14a FIG. 10 is a perspective view of an anboing suction device. FIG 500 connected with a drilling tool 10 according to 1 shown. The tapping hoist 500 is formed in one piece and made of a plastic. The tapping hoist 500 is axially movable with the drilling tool 10 connected. The tapping hoist 500 surrounds the drilling tool 10 preferably completely. Along its longitudinal extent, that of the longitudinal axis 12 of the drilling tool 10 corresponds to the tapping hoist accessory 500 a connection section 502 about which the tapping hoist device 500 on the drilling tool 10 is stored and a suction section 504 which is adapted to a drill head 24 of the drilling tool 10 when tapping on, on.

The connection section 502 is on the drill head 24 side facing away from the Anbohrabsaughilfsvorrichtung 500 arranged. The connection section 502 has a circular cross-section. The connection section 502 has an inner diameter 506 substantially the outer diameter of the sleeve member 34 of the drilling tool 10 equivalent. Alternatively, it is also conceivable that the inner diameter 506 to the diameter of the drill head 24 is adapted to the Anbohrabsaugsilfsvorrichtung 500 over the drill head 24 with the drilling tool 10 connect to. The connection section 502 lies in the connected state over a contact surface 510 on the drilling tool 10 , in particular on the sleeve element 34 of the drilling tool 10 , at. Preferably, the attachment section 502 the tapping hoist 500 such that for the axial movement of the Anbohrabsaughilfsilfsvorrichtung 500 at least a slight adhesion, for example due to a frictional force between the Anbohrabsaughilfsilfsvorrichtung 500 and the drilling tool 10 , must be overcome. Alternatively, it would also be conceivable that between the Anbohrabsaughilfsilfsvorrichtung 500 and the suction adapter 100 an additional O-ring is mounted. The amount of force required for the axial movement of the tapping hoist 500 is required, for example, by the choice of material Anbohrabsaugshilfsvorrichtung 500 and the sleeve member 34 and / or be influenced by surface structuring and / or surface coatings.

The suction section 504 is on the drill head 24 facing side of the drilling tool 10 arranged. The suction section 504 also has a cylindrical cross-section. The suction section 504 has an inner diameter 512 on, which is larger than the inner diameter 506 of the connection section 502 , The inner diameter is advantageous 512 the suction section 504 greater than the diameter of the drill head 24 , so that the connection section 504 the drill head 24 can embrace when drilling. Preferably, the connection section goes 502 in the suction section 504 via an extension of the inside diameter 506 above. The tapping hoist 500 can im using the drilling tool 10 connected state so parallel to the longitudinal axis 12 of the drilling tool 10 be moved that the tapping hoist 500 either completely in the transport area 22 (please refer 14a) or partly in the transport area 22 as well as area of the drill head 24 (please refer 14b) is arranged. The connection section 504 points to his front page 518 air intake openings 520 , can be sucked through the air during drilling, and stop elements 522 when drilling on a workpiece 14 abut. The air intake openings 520 and the stop elements 522 are as part of a gearing 524 educated. The gearing 524 is designed in particular as an axial toothing. The tapping hoist 500 has an equal number of air intake openings 520 and stop elements 522 on, exemplary four air intake 520 and four stopper elements 522 , In the circumferential direction, the air intake openings 520 and the stopper elements 522 the same length. However, there are also different lengths conceivable to adjust the extraction result as needed.

To join the tapping hoist 500 with the drilling tool 10 has the tapping hoist accessory 500 a slot 514 extending parallel to the longitudinal extension of the tapping aid 500 extends. The slot 514 is especially continuous. The tapping hoist 500 is formed of such a resilient material that a user by hand the slot 514 such expansion can that the slot is larger or wider than the drilling tool 10 in the transport area 22 , in particular larger or wider than the inner diameter 506 of the connection section 502 ,

In 14b is a longitudinal section through the drill 10 and by the tapping hoist 500 shown during drilling. The summit 26 of the drill head 24 lies on the workpiece 14 and the tapping hoist 500 is pushed forward until the suction section 504 the drill head 24 surrounds and in particular the suction section 504 on the workpiece 14 is applied. When drilling in, air can pass through the air intake openings 520 in the direction of the intake openings 38 of the drilling tool 10 be sucked in and at the same time by the area, by the stop elements 522 is covered, prevents the cuttings and dust released by tapping the from the suction section 504 opened interior leaves. In particular, the cuttings over the through the stop elements 522 covered space to the intake openings 38 of the drilling tool 10 guided.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3237721 A1 [0001]

Claims (10)

A drilling tool, in particular a rock drill, extending along a longitudinal axis (12), comprising a drill head (24), a male end (16), a base (322), a sleeve member (34), a transfer area (22) disposed between the drill head (24) and the insertion end (16) is arranged, at least one transport channel (36) extending along the transport region (22), wherein the transport channel (36) is arranged radially between the sleeve member (34) and the base body (32) characterized in that the drilling tool (10) comprises a damping unit (68o) adapted to damp a pulse emanating from the body (32). Drilling tool according to one of the preceding claims, characterized in that the transport channel (36) by a groove (42) in the base body (32) and / or in the sleeve member (34) is formed. Drilling tool according to one of the preceding claims, characterized in that the damping unit (68o) is adapted to damp a pulse acting on a suction adapter (100). Drilling tool according to one of the preceding claims, characterized in that the damping unit (68o) is adapted to damp a pulse acting on the sleeve member (34). Drilling tool according to one of the preceding claims, characterized in that the damping unit (68o) has at least one first damping element (69o) which bears against the base body (32) and / or on the sleeve element (34) or on the suction adapter (100). Drilling tool after Claim 5 , characterized in that the damping unit (68o) has a second damping element (70o), which is arranged in particular in the longitudinal direction adjacent to the first damping element (69o). Drilling tool according to one of Claims 5 to 6 , characterized in that at least one of the damping elements (69o, 70o) is formed as a circular or oval-shaped rubber element. Drilling tool according to one of Claims 5 to 7 , characterized in that at least one of the damping elements (69o, 70o) is designed as a spring element. Drilling tool according to one of Claims 5 to 8th , characterized in that at least one of the damping elements (69q, 70q) is designed as a gas spring element. Drilling tool according to one of Claims 5 to 9 , characterized in that at least one of the damping elements is formed integrally or integrally with the suction adapter.

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