DE102008056682A1 - Milling and deburring tool for use in machine tool of workpiece e.g. tube, has milling head stroke-mobilely supported in axial direction relative to base body against stopper, which variably adjusts lifting height of milling head - Google Patents

Abstract

The tool (1) has a base body (2) comprising a spindle support (4) at an end (3). A milling head (6) extends away from another end (5) of the base body in an axial direction. The milling head is connected with the base body by a retaining device (7). The retaining device is accommodated partly in the base body. The milling head is stroke-mobilely supported in the axial direction relative to the base body against a stopper (8) opposite to a direction of action of resetting force. The stopper variably adjusts lifting height of the milling head. An independent claim is also included for a method for machining a workpiece.

Description

Technical area:

The The invention relates to a milling and deburring tool for use in a machine tool, comprising a base body, at the first end of a spindle receptacle is formed and of the second end protrudes a milling head in the axial direction, wherein the milling head by a holding device with the main body is connected and wherein the holding device at least partially is received in the main body, according to the The preamble of claim 1. Likewise, the invention relates to a method for machining a workpiece with such a milling and deburring tool.

State of the art:

Trimming of the type mentioned are by means of their spindle mounts in machine tools clamped and rotated by these machine tools in rotation. The milling head can then remove burrs on workpieces and thus smooth the workpieces by machining.

Often For this purpose, the deburring tools are forcibly guided on a circular path, for deburring round workpieces such as pipes. The positively driven deburring tool follows the or an edge surface of the workpiece to be deburred, to deburr its edge by making a chamfer.

If such a workpiece has an imbalance, the Deburring tools known from the prior art due to the imbalance forced to a lateral evasive movement in the radial direction. Because the deburring tools due to their forced operation an intended circular path but already under pressure on the workpiece abut, this contact force can be greatly increased by the imbalance become. It can then be used to hit the deburring tool against the Workpiece and for embossing notches or grooves as well as to change the chamfer angle come.

This is particularly problematic when edges of round Deburring workpieces. Chamfers are common with an inclination angle of 45 ° on a workpiece applied. Therefore, especially when deburring chamfer care to wear that angle of inclination not through the deburring process changed due to excessive contact pressure of the deburring tool becomes.

By the DE10310270 A1 For example, a deburring tool for high-speed deburring of abutting edges on intersecting bores or on longitudinal and transverse grooves in bores of a workpiece has become known, such as, for example, an engine block (according to patent application 10215004.4.) which is moved rotationally and / or translationally in use. The deburring tool has a tool shank which has a clamping end and a tool body arranged at the end of the shaft bearing as a fixed bearing, further comprises a tubular shaft piece which is connected by one or more connecting elements with the tool shank which movably mounted in apertures, in the axial direction a level lying cutting body holds, which rest loosely with a play on the surface of the support body and a pressed under pressure into a through hole of the tool shank liquid or gaseous or consisting of a gas-liquid mixture material moves the blades to the outside. At least two closely adjacent openings are arranged radially symmetrically and offset in the axial direction by an amount m in the tubular shaft piece asymmetrically.

By the DE 1030572 A1 is a deburring tool for cutting deburring of tubular ends of a workpiece (according to patent application 102 15 004.4) become known, in which the support body is arranged on the tool side shaft end as a fixed bearing. A tubular shaft piece, which is connected by one or more connecting elements with the tool shank holding the movable in the breakthrough blade body which rests loosely with a play on the surface of the support body, wherein a pressed under pressure into a through hole of the tool shank liquid or gaseous or from a gas-liquid mixture existing material is moved to the cutting edge to the outside. The tool shank with the chucking end and the tool-side shank end are made in one piece with the inner through-hole, wherein the shank end has the shape of a hollow cylinder. A portion of the hollow cylinder enclosing the tubular end of the workpiece to be machined has in the through-bore a plurality of cylindrical cutting bodies with cutting edges distributed over the circumference and arranged in the opening, which point in the direction of the longitudinal axis. The cutting bodies abut against conically designed supporting bodies with a clearance, wherein the supporting bodies are firmly connected to the closure plates.

Technical task:

The invention has for its object to provide a milling and deburring tool, with which with an imbalance or with a deviation from a given curve afflicted workpieces can be easily processed and material friendly while maintaining the quality and quality milling, especially by deburring Burrs or edges.

Disclosure of the invention and its advantages:

• [1] The object is achieved by a milling and deburring tool of the type mentioned solved, in which the milling head in the axial direction its axis of rotation relative to the main body against a first Stop against the direction of action of a restoring force liftable is stored, wherein the lifting height of the milling head is variably adjustable by the first stop.

• [A2] Vorzugsweise kann der Fräskopf gemeinsam mit der Halteeinrichtung hubbeweglich gelagert sein. Hierdurch ist eine stabile Führung des Fräskopfes möglich. Der Fräskopf kann während seiner axialen Bewegung gegen Verbiegungen stabilisiert werden. Des Weiteren kann die Halteeinrichtung vermeiden, dass der Fräskopf abbricht.
• [A3] In weiterer Ausgestaltung der Erfindung kann der erste Anschlag mindestens einen Mitnehmer aufweisen, der mit dem Grundkörper und der Halteeinrichtung in Eingriff steht und mit der Halteeinrichtung im Grundkörper einen Hubspalt begrenzt. Dadurch ist sicher gestellt, dass der Fräskopf gemeinsam mit dem Grundkörper gedreht wird. Die Dimension des Hubspalts legt die Hubhöhe fest, um die der Fräskopf in axialer Richtung nach oben oder unten bewegbar ist.
• [A4] Vorzugsweise kann der mindestens eine Mitnehmer in radialer Richtung relativ zur Halteeinrichtung und zum Grundkörper beweglich sein. Durch Bewegen des Mitnehmers in radialer Richtung nach innen oder außen kann der Hubspalt vergrößert oder verkleinert werden. Der Mitnehmer kann von außen, außerhalb des Grundkörpers bedient werden.
• [A5] In weiterer Ausgestaltung der Erfindung kann der mindestens eine Mitnehmer dabei gestuft oder konisch ausgebildet sein. Durch eine gestufte oder konische Ausbildung des Mitnehmers kann die Größe des Hubspalts in Abhängigkeit von der radialen Eindringtiefe des Mitnehmers eingestellt werden. Je weiter beispielsweise ein konischer Mitnehmer in radialer Richtung in den Grundkörper eingeführt wird, desto enger wird der Hubspalt und desto kleiner die Hubhöhe, die der Fräskopf in axialer Richtung ausführen kann.
• [A6] Vorzugsweise kann der erste Anschlag drei Mitnehmer aufweisen, die umfänglich äquidistant angeordnet sind. Durch diese Ausgestaltung wird die Last auf die Mitnehmer besonders günstig verteilt.
• [A7] In weiterer Ausgestaltung der Erfindung kann die Rückstellkraft, die den Fräskopf in Richtung zum Werkstück zu bewegen imstande ist, durch eine Feder aufgebracht werden, so dass der Fräskopf gegen die Rückstellkraft der Feder, welche dazu noch vorgespannt sein kann, axial beweglich gelagert ist. Durch die Rückstellkraft der Feder wird der Fräskopf nach erfolgter axialer Auslenkung automatisch in seine vorgesehene Arbeitsposition verbracht, so dass die erzeugte Fase über ihre Länge immer einen gleich bleibenden Winkel aufweist.
• [A8] Vorzugsweise kann das dem Fräskopf abgewandte Ende der Halteeinrichtung eine Aufnahme für die Feder aufweisen. Die Aufnahme kann als Senkbohrung ausgestaltet sein. Durch diese Aufnahme wird die Feder zwangsgeführt und verhindert, dass die Feder verkippt oder verrutscht.
• [A9] Vorzugsweise kann das dem Fräskopf abgewandte Ende der Halteeinrichtung axial hubbeweglich gegen einen zweiten Anschlag führbar sein, der im Grundkörper aufgenommen ist. Durch den zweiten Anschlag kann die Rückstellkraft der Feder eingestellt werden. Der zweite Anschlag erlaubt, die Vorspannung der Feder einzustellen, die zwischen der Halteeinrichtung und dem zweiten Anschlag eingespannt ist.
• [A10] Vorzugsweise kann der zweite Anschlag zwei aneinanderliegende, relativ zueinander bewegliche Konusse aufweisen, wobei ein Konus durch einen Durchgriff im Grundkörper bewegbar ist. Durch das Bewegen des einen Konus können zwei geneigte Flächen der Konusse aufeinander geschoben werden. Durch das Aufeinanderschieben der geneigten Flächen erhöht sich die Gesamthöhe der beiden übereinander liegenden Konusse. Hierdurch kann der zweite Anschlag bzw. die Vorspannung der Feder eingestellt werden.
• [A11] In weiterer Ausgestaltung der Erfindung kann der Fräskopf einen Schaft aufweisen, der in der Halteeinrichtung von einer Spannzange ergriffen ist, die in einer Spannzangenkammer angeordnet ist. Durch diese konkrete Ausgestaltung kann der Fräskopf durch eine Schraubbewegung in der Halteeinrichtung fixiert werden. Durch den Schraubvorgang kann die Spannzange komprimiert werden. Dabei fixiert sie den Schaft und damit den Fräskopf.
• [A12] Vorzugsweise kann die Spannzange durch eine Überwurfmutter radial zusammengepresst sein, wobei die Überwurfmutter mit der Halteeinrichtung verschraubt ist. Die Überwurfmutter erlaubt es, die Spannzange händisch zu komprimieren.
• [A13] In weiterer Ausgestaltung der Erfindung kann die Spannzange mehrere radial bewegliche konisch verlaufende Segmente aufweisen, welche durch Sackschlitze gebildet werden. die sich in axialer Richtung erstrecken. Durch diese konkrete Ausgestaltung ist die Spannzange in radialer Richtung komprimierbar. Die Sackschlitze sind alternierend angeordnet und schwächen den Aufbau der Spannzange derart definiert, dass die Segmente in radialer Richtung gegeneinander geführt werden können.
• [A14] Dabei kann die Spannzange als Doppelkonus ausgebildet sein, wobei die Segmente in zwei entgegengesetzten Richtungen konisch verlaufen. Diese Ausgestaltung erlaubt die Aufnahme der Spannzange in einer Spannzangenkammer. Wenn die Segmente gegen die Innenwandung der Spannzangenkammer gepresst werden, werden diese radial gegeneinander geführt und die Spannzange komprimiert. Beim Komprimieren der Spannzange können die Segmente den Schaft des Fräskopfes fixieren und ergreifen.
• [A15] In weiterer Ausgestaltung der Erfindung kann der Schaft von einer Spülhülse umgeben sein. Hierdurch ist ein Fluid zur Kühlung an den Fräskopf führbar. Die Spülhülse kann den Schaft des Fräskopfes dabei unter Ausbildung eines Ringspalts zur Fluidführung konzentrisch umgeben.
• [A16] In weiterer Ausgestaltung der Erfindung kann im Grundkörper eine Kammer ausgebildet sein, die ein Fluid zur Kühlung bei Entgratvorgängen oder Fräsvorgängen aufnimmt. Hierdurch kann ein Überhitzen des Fräskopfes bei Entgratvorgängen vermieden werden.
• [A17] Von der Kammer kann eine erste Fluidleitung zur Halteeinrichtung führen, wobei in der Halteeinrichtung eine zweite Fluidleitung zum Fräskopf führt. Durch diese Fluidleitungen ist eine Strömungsverbindung zwischen der Kammer und dem Fräskopf hergestellt.
• [A18] Ebenso kann die zweite Fluidleitung der Halteeinrichtung in eine zumindest bereichsweise konisch ausgebildete Spannzangenkammer münden. Durch diese Ausgestaltung kann das Fluid durch die Sackschlitze der Spannzange hindurchströmen und zum Fräskopf gelangen. Die konische Ausbildung der Spannzangenkammer ermöglicht eine stabile Anlage der Segmente der Spannzange an der Innenwandung der Spannzangenkammer.
• [A19] Vorzugsweise können zwischen der Halteeinrichtung und dem Grundkörper eine Fluiddichtung und eine Schmutzdichtung angeordnet sein. Die Fluiddichtung bewirkt, dass das Fluid ausschließlich zum Fräskopf gelangt und nicht durch Leckagen aus dem Grundkörper austritt. Die Schmutzdichtung ihrerseits verhindert ein Eindringen von Partikeln in das Innere des Grundkörpers.
• [A20] In weiterer Ausgestaltung der Erfindung kann der Fräskopf an seinem dem Grundkörper abgewandten Ende einen ersten konischen Fräskranz aufweisen und an seinem dem Grundkörper zugewandten Ende einen zweiten konischen Fräskranz aufweisen, wobei die Konizität der Fräskränze gegensinnig ausgebildet ist und der Fräskopf einen Äquator ausbildet. Die konische Ausbildung des Fräskopfes in beiden Richtungen erlaubt eine Auf- und eine Abbewegung des Fräskopfes in axialer Richtung, wenn dieser einer Unwucht eines zu entgratenden Werkstücks ausweicht.
• [A21] Ein Verfahren zur Bearbeitung eines Werkstücks kann derart durchgeführt werden, dass ein erfindungsgemäßes Fräs- und Entgratwerkzeug in Rotation versetzt wird, rotierend auf einer Bahn zwangsgeführt wird und dabei unter Pressung am Werkstück anliegt und bei Abweichung der zu bearbeitenden Kontur des Werkstücks von der vorgegebenen Bahn des Fräs- und Entgratwerkzeugs der Fräskopf desselben eine entsprechende Auf- und Abbewegung in axialer Richtung durchführt.

According to the invention, it has been recognized that a milling head, which can move axially in the direction of its axis of rotation, performs no lateral evasive movement in the case of unevennesses of the workpiece or deviations thereof from a circumference to be deburred, for example circular or predetermined, but rather axial deflection movement. Due to the axial evasive movement, the contact force of the milling head can be kept practically constant to the workpiece to be deburred. Furthermore, tips of the contact force in the milling head are avoided by the axial compensation movement. The forcibly guided on a circular path milling and deburring can follow the lateral surface of a round workpiece, which is subject to an imbalance, without applying too high contact pressure. The first stop determines the lifting height by which the milling head can move upwards or downwards in the axial direction. Due to the variably adjustable first stop, the milling and deburring tool can be adapted to the workpiece to be treated. In that regard, a material-friendly deburring of a problem with an imbalance or with a deviation from a given curve workpiece is easily possible. It should be borne in mind that in forcibly guided milling and deburring tools of the prior art in such cases an unbalance of a round workpiece significant lateral forces occur, which deflect the milling head more or less laterally, so that the chamfer angle changes.

• [A2] Preferably, the milling head can be mounted in a liftable manner together with the holding device. As a result, a stable guidance of the milling head is possible. The milling head can be stabilized against bending during its axial movement. Furthermore, the holding device can prevent the milling head from breaking off.
• [A3] In a further embodiment of the invention, the first stop may comprise at least one driver, which is in engagement with the base body and the holding device and limits a lifting gap with the holding device in the base body. This ensures that the milling head is rotated together with the main body. The dimension of the Hubspalts determines the lifting height by which the milling head in the axial direction is movable up or down.
• [A4] Preferably, the at least one driver can be movable in the radial direction relative to the holding device and to the main body. By moving the driver in the radial direction inwards or outwards, the lifting gap can be increased or decreased. The driver can be operated from the outside, outside of the body.
• [A5] In a further embodiment of the invention, the at least one driver can be stepped or conical. By a stepped or conical design of the driver, the size of the Hubspalts can be adjusted in dependence on the radial penetration depth of the driver. The further example, a conical driver is introduced in the radial direction in the body, the narrower the lift gap and the smaller the lifting height, which can perform the milling head in the axial direction.
• [A6] Preferably, the first stop may have three drivers, which are arranged circumferentially equidistant. By this configuration, the load is distributed particularly favorable to the driver.
• [A7] In a further embodiment of the invention, the restoring force, which is able to move the milling head toward the workpiece, are applied by a spring, so that the milling head against the restoring force of the spring, which may be biased to axially movable is. Due to the restoring force of the spring, the milling head is automatically moved to its intended working position after axial deflection, so that the chamfer always has a constant angle along its length.
• [A8] The end of the holding device facing away from the milling head may preferably have a receptacle for the spring. The recording can be configured as a counterbore. Through this recording, the spring is forcibly guided and prevents the spring tilts or slips.
• [A9] Preferably, the milling head facing away from the end of the holding device can be axially liftable against a second stop feasible, which is received in the base body. By the second stop, the restoring force of the spring can be adjusted. The second stop allows to adjust the bias of the spring, which is clamped between the holding device and the second stop.
• [A10] Preferably, the second stop can have two adjoining, relatively movable cones, wherein a cone is movable by a passage in the base body. By moving the one cone, two inclined surfaces of the cones can contact each other be pushed. By pushing the inclined surfaces together, the total height of the two superimposed cones increases. As a result, the second stop or the bias of the spring can be adjusted.
• [A11] In a further embodiment of the invention, the milling head may have a shaft which is gripped in the holding device by a collet, which is arranged in a collet chamber. By this specific embodiment, the milling head can be fixed by a screw in the holding device. By screwing the collet can be compressed. It fixes the shaft and thus the milling head.
• [A12] Preferably, the collet may be radially compressed by a union nut, wherein the union nut is bolted to the holding device. The union nut allows the collet to be compressed manually.
• [A13] In a further embodiment of the invention, the collet can have a plurality of radially movable conical segments, which are formed by blind slots. which extend in the axial direction. By this specific embodiment, the collet is compressible in the radial direction. The blind slots are arranged alternately and weaken the structure of the collet so defined that the segments can be performed in the radial direction against each other.
• [A14] In this case, the collet may be formed as a double cone, wherein the segments are conical in two opposite directions. This embodiment allows the reception of the collet in a collet chamber. When the segments are pressed against the inner wall of the collet chamber, they are radially guided against each other and the collet compressed. When compressing the collet, the segments can fix and grip the shank of the milling head.
• [A15] In a further embodiment of the invention, the shaft may be surrounded by a rinsing sleeve. As a result, a fluid for cooling to the milling head can be performed. The flushing sleeve can thereby surround the shaft of the milling head concentrically to form an annular gap for fluid guidance.
• [A16] In a further embodiment of the invention, a chamber may be formed in the base body, which receives a fluid for cooling during deburring or milling operations. As a result, overheating of the milling head during deburring operations can be avoided.
• [A17] A first fluid line can lead from the chamber to the holding device, wherein a second fluid line leads to the milling head in the holding device. Through these fluid lines, a flow connection between the chamber and the milling head is made.
• Likewise, the second fluid line of the holding device can open into an at least partially conical collet chamber. With this configuration, the fluid can flow through the blind slots of the collet and reach the milling head. The conical design of the collet chamber allows stable contact of the segments of the collet on the inner wall of the collet chamber.
• [A19] Preferably, a fluid seal and a dirt seal can be arranged between the holding device and the main body. The fluid seal causes the fluid passes exclusively to the milling head and does not leak through leaks from the body. The dirt seal in turn prevents penetration of particles into the interior of the body.
• [A20] In a further embodiment of the invention, the milling head may have at its end facing away from the main body a first conical milling ring and at its end facing the base body a second conical milling ring, wherein the conicity of the Fräskränze is formed in opposite directions and the milling head forms an equator. The conical design of the milling head in both directions allows an up and a down movement of the milling head in the axial direction, if this evades an imbalance of a workpiece to be deburred.
• [A21] A method for machining a workpiece can be carried out in such a way that a milling and deburring tool according to the invention is set in rotation, is forcibly guided on a path in rotation and bears against the workpiece under pressure and if the contour of the workpiece to be machined deviates from that of the workpiece predetermined path of the milling and deburring the milling head of the same performs a corresponding up and down movement in the axial direction.

• [A22] Das Fräs- und Entgratwerkzeug kann auch auf einer linearen Bahn zwangsgeführt werden. Das Fräs- und Entgratwerkzeug kann dabei linearen Konturen eines Werkstücks folgen und diese Konturen entgraten oder mit einer Fase oder Fräsfläche versehen. Wenn bei einem Werkstück, welches eine linear verlaufende zu entgratende Kante aufweist, die Kante von ihrem linearen Verlauf abweicht, so kann auch in diesem Fall der Fräskopf in axialer Richtung seiner Drehachse ausweichen.
• [A23] Das Fräs- und Entgratwerkzeug kann auch auf einer gekrümmten Bahn zwangsgeführt werden. Hierbei können runde Werkstücke wie beispielsweise Rohre entgratet werden.
• [A24] Durch das Fräs- und Entgratwerkzeug kann eine Fläche in das Werkstück gefräst werden. Hierdurch ist eine flächige Bearbeitung des Werkstücks nicht nur an dessen Rändern, sondern auch an anderen Stellen möglich.
• [A25] Durch das Fräs- und Entgratwerkzeug kann eine Fase in das Werkstück gefräst werden, die einen Fasenwinkel von 30° bis 60°, vorzugsweise 45°, zeigt. Dabei folgt das zwangsgeführte Fräs- und Entgratwerkzeug dem zu entgratenden Werkstück, um dessen Rand durch Herstellen einer Fase zu entgraten. Mit dem erfindungsgemäßen Fräs- und Entgratwerkzeug können Fasen mit einem Neigungswinkel von 30° bis 60° problemlos an einem Werkstück aufgebracht werden. Der Neigungswinkel wird nicht durch den Entgratvorgang aufgrund zu hoher Anpresskraft des Fräs- und Entgratwerkzeugs verändert.

Milling and deburring tools of the type described here are clamped by means of their spindle mounts in machine tools and rotated by these machine tools. The milling head can then remove burrs on workpieces on edges and thus smooth the workpieces by machining. The edge or surface of the workpiece to be machined may deviate in its course from the predetermined, positively guided path of the milling and deburring tool by form deviations or hardness distortion of the workpiece. As soon as the edge or surface of the workpiece to be machined deviates in its course from the positively guided path of the milling and deburring tool, the milling can dodge the head in the axial direction of its axis of rotation. A hitting the positively driven milling and deburring against the workpiece, an impression of notches or grooves as well as a change in a chamfer angle can be effectively avoided by using the milling and deburring tool according to the invention.

• [A22] The milling and deburring tool can also be forcibly guided on a linear path. The milling and deburring tool can follow linear contours of a workpiece and deburr these contours or provided with a chamfer or milling surface. If, in the case of a workpiece which has a linear edge to be deburred, the edge deviates from its linear course, then in this case too, the milling head can move in the axial direction of its axis of rotation.
• [A23] The milling and deburring tool can also be forcibly guided on a curved path. Here, round workpieces such as pipes can be deburred.
• [A24] The milling and deburring tool can be used to mill a surface into the workpiece. As a result, a flat machining of the workpiece not only at the edges, but also in other places is possible.
• [A25] The milling and deburring tool can be used to mill a chamfer into the workpiece, which has a chamfer angle of 30 ° to 60 °, preferably 45 °. The positively driven milling and deburring tool follows the workpiece to be deburred in order to deburr its edge by producing a chamfer. With the milling and deburring tool according to the invention chamfers can be easily applied to a workpiece with an inclination angle of 30 ° to 60 °. The inclination angle is not changed by the deburring process due to excessive contact pressure of the milling and deburring tool.

In order to are the prerequisites for the use of the milling and Deburring tool, for example, in tact roads with the latest Given manufacturing technologies. Other goals, features, benefits and applications of the present invention from the following description of the embodiments With reference to the drawing, in which exemplify and schematically illustrate:

1 a milling and deburring tool in perspective view,

2 a side view of the milling and deburring tool 1 .

3 a sectional view of the milling and deburring of the 1 and 2 .

4 a sectional view of the milling and deburring according to 3 in the plane in which the three drivers are arranged, which form the first stop,

5 a first perspective view of the collet and

6 a second perspective view of the collet.

Preferred embodiments the invention:

1 shows in perspective view and 2 in a side view of an inventive milling and deburring tool 1 for use in a machine tool. The milling and deburring tool 1 comprises a substantially cylindrical body 2 , at its first end 3 a spindle mount 4 is formed and of its second end 5 a milling head 6 protrudes in the axial direction. The milling head 6 is by a substantially cylindrical holding device 7 with the main body 2 connected, wherein the holding device 7 at least partially in the basic body 2 is included. The milling head 6 is in the axial direction relative to the main body 2 against a first stop 8th stored liftable, wherein the lifting height of the milling head 6 through the first stop 8th is variably adjustable.

3 shows in a sectional view of the milling and deburring tool from the 1 and 2 , This comprises a substantially cylindrical body 2 , at its first end 3 a spindle mount 4 is formed and of its second end 5 a milling head 6 protrudes in the axial direction. The milling head 6 is by a substantially cylindrical holding device 7 with the main body 2 connected, wherein the holding device 7 at least partially in the basic body 2 is included. The holding device 7 protrudes with one end from the main body 2 out. The milling head 6 is in the axial direction relative to the main body 2 against a first stop 8th stored liftable, wherein the lifting height of the milling head 6 through the first stop 8th is variably adjustable.

The milling head 6 is in common with the holding device 7 stored in a liftable manner. The first stop 8th has at least one driver 9 on that with the main body 2 and the holding device 7 engaged and with the holding device 7 in the main body 2 a lifting gap 10 limited.

The at least one driver 9 is in the radial direction relative to the holding device 7 and to the main body 2 movable. He can by a screw 11 be fixed in a desired position. The screw 11 attacks from the second end 5 into the driver 9 one. The driver 9 is graduated. The first stop 8th has three with taker 9 on, which are arranged circumferentially equidistant.

The milling head 6 is against the restoring force of a preloaded spring 12 mounted axially movable. The feather 12 can be designed as a spiral spring.

That the milling head 6 remote end of the holding device 7 has a recording 13 for the spring 12 on, which is designed as a blind hole or blind hole. In the recording 13 becomes the spring 12 forced out. At the bottom of the trained as blind hole recording 13 is a second fluid line 26 educated.

That the milling head 6 remote end of the holding device 7 is axially liftable against a second stop 14 feasible, in the main body 2 is included. The second stop 14 has two adjacent, relatively movable wedge-shaped cones 15 . 16 on, being a cone 16 through a penetration 17 in the main body 2 is movable. Into the penetration 17 a set screw can be used with which the cone 16 can be moved. By moving the cone 16 can have two inclined surfaces 15a . 16a the wedge-shaped cones 15 . 16 be pushed towards each other according to two successive inclined planes. By pushing the inclined surfaces together 15a . 16a increases the total height of the two superimposed wedge-shaped cones 15 . 16 , This allows the second stop 14 or the bias of the spring 12 be set.

The milling head 6 has a shaft 18 on that in the holding device 7 from a collet 19 taken in a collet chamber 20 is arranged. The collet 19 is through a union nut 21 radially compressed, with the union nut 21 with the holding device 7 is screwed.

The shaft 18 is from a rinsing sleeve 22 surrounded concentrically. The rinsing sleeve 22 forms with the shaft 18 an annular gap 23 through which fluid to the milling head 6 can get. The rinsing sleeve 22 is T-shaped in cross-section and is provided with a cantilevered edge in the union nut 21 held.

In the main body 2 is a chamber 24 formed, which receives a fluid for cooling in milling operations or deburring processes. From the chamber 24 leads a first fluid line 25 to the holding device 7 , wherein in the holding device 7 a second fluid line 26 to the milling head 6 leads. The second fluid line 26 the holding device 7 opens into an at least partially conical collet chamber 20 , In the collet chamber 20 is the collet 19 used.

Between the holding device 7 and the body 2 are a fluid seal 27 and a dirt seal 28 arranged. The seals 27 . 28 are designed as ring seals, for example so-called O-rings.

The milling head 6 indicates at its the base body 2 opposite end of a first conical milling ring 29 on and on his body 2 facing the end of a second conical milling ring 30 on, with the taper of the Fräskränze 29 . 30 is formed in opposite directions and the milling head 6 an equator 31 formed. By this configuration, the milling head 6 perform an upward and downward movement in the axial direction easily because the Fräskränze 29 . 30 due to their conical inclination along the edge of a workpiece can follow the edge slidably and thereby form a chamfer with constant chamfer angle on the workpiece.

4 shows the first stop 8th in a sectional view. The three drivers 9 are in the radial direction relative to the holding device 7 and to the main body 2 movably mounted in cylindrical cam receivers. The first stop 8th has three drivers 9 on, which are arranged circumferentially equidistant. The holding device 7 has a second fluid line 26 on that with the first fluid line 25 in the main body 2 fluidly connected.

The 5 and 6 show the collet 19 located in the conical collet chuck 20 out 3 is arranged, in a perspective view from two directions. The collet 19 has several radially movable conical segments 32 on, which by sack slots 33 are formed, which extend in the axial direction. The collet 19 is designed as a double cone, the segments 32 tapered in two opposite directions. The bag slots 33 are alternately arranged so that they open alternately to different directions.

The collet 19 located in 3 on the inner wall of the conical collet chamber 20 at. Your segments 32 are by screwing the union nut 21 with the holding device 7 led against each other, with the blind slots 33 are partially reduced in their width. By the juxtaposition of the segments 32 becomes the shaft 18 from the segments 32 firmly seized, in 6 facing the observer plane.

The fluid from the chamber 24 can through the bag slots 33 flow through, inside the collet 19 spread and over the shaft 18 to the milling head 6 reach.

In the 1 to 6 the same reference numerals designate the same elements of the milling and deburring tool 1 ,

Industrial Applicability

The Invention is industrially applicable, since the milling and deburring tool can be used in the machining of workpieces whose to be machined surface or edge of a given Surface or shape or edge deviates. In mechanical use Such milling and deburring tools means that in the case of a deviation in the milling process Surface or edge of a given guideway, on the milling and deburring tool by means of a predetermined Guideway is forced, the workpiece nevertheless processed according to the specifications; for example is at a round workpiece, which with an imbalance is affected, the shape deviation in the range of imbalance right processed.

The Usefulness of the milling and deburring tool is that with this with shape deviations, For example, with an imbalance, subject workpieces easily and gentle on materials while maintaining quality and quality the milling process, such as a deburring, in particular at the same chamfer angle along the deburring curve, can be deburred.

1

milling and deburring tool

2

body

3

first End of the body

4

Spindle taper

5

second End of the body

6

milling head

7

holder

8th

first attack

9

takeaway

10

stroke gap

11

screw

12

Feather, spiral spring

13

spring mount

14

second attack

15 16

wedge-shaped cones

15a, 16a

inclined surfaces

17

penetration

18

shaft

19

collet

20

Collet chamber

21

Nut

22

irrigation sleeve

23

annular gap

24

chamber

25

first fluid line

26

second fluid line

27

fluid seal

28

dirt seal

29

first conical milling ring

30

second conical milling ring

31

equator

32

segments the collet

33

bag slots

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10310270 A1 [0006]
• - DE 1030572 A1 [0007]

Claims (24)

Milling and deburring tool ( 1 ) for use in a machine tool, comprising a base body ( 2 ), at its first end ( 3 ) a spindle receptacle ( 4 ) and of its second end ( 5 ) a milling head ( 6 ) protrudes in the axial direction, wherein the milling head ( 6 ) by a holding device ( 7 ) with the basic body ( 2 ) and wherein the holding device ( 7 ) at least partially in the basic body ( 2 ), characterized in that the milling head ( 6 ) in the axial direction of its axis of rotation relative to the main body ( 2 ) against a first stop ( 8th ) is mounted for lifting against the direction of action of a restoring force, wherein the lifting height of the milling head ( 6 ) through the first stop ( 8th ) is variably adjustable. Milling and deburring tool according to claim 1, characterized in that the milling head ( 6 ) together with the holding device ( 7 ) is mounted in a liftable manner. Milling and deburring tool according to claim 1 or 2, characterized in that the first stop ( 8th ) at least one driver ( 9 ), which is connected to the main body ( 2 ) and the holding device ( 7 ) is engaged and with the holding device ( 7 ) in the main body ( 2 ) a lifting gap ( 10 ) limited. Milling and deburring tool according to claim 3, characterized in that the at least one driver ( 9 ) in the radial direction relative to the holding device ( 7 ) and to the main body ( 2 ) is movable. Milling and deburring tool according to claim 3 or 4, characterized in that the at least one driver ( 9 ) stepped or conical. Milling and deburring tool according to one of claims 3 to 5, characterized in that the first stop ( 8th ) three drivers ( 9 ), which are arranged circumferentially equidistant. Milling and deburring tool according to one of claims 1 to 6, characterized in that the milling head ( 6 ) against the restoring force of a preloaded spring ( 12 ) is mounted axially movable. Milling and deburring tool according to claim 7, characterized in that the milling head ( 6 ) facing away from the end of the holding device ( 7 ) a recording ( 13 ) for the spring ( 12 ) having. Milling and deburring tool according to one of claims 1 to 8, characterized in that the milling head ( 6 ) facing away from the end of the holding device ( 7 ) axially liftable against a second stop ( 14 ) is feasible, in the body ( 2 ) is recorded. Milling and deburring tool according to claim 9, characterized in that the second stop ( 14 ) two adjoining, relatively movable cones ( 15 . 16 ), wherein a cone ( 16 ) by a penetration ( 17 ) in the main body ( 2 ) is movable. Milling and deburring tool according to one of claims 1 to 10, characterized in that the milling head ( 6 ) a shaft ( 18 ), which in the holding device ( 7 ) of a collet ( 19 ), which is in a collet chamber ( 20 ) is arranged. Milling and deburring tool according to claim 11, characterized in that the collet ( 19 ) by a union nut ( 21 ) is compressed radially together, wherein the union nut ( 21 ) with the holding device ( 7 ) is screwed. Milling and deburring tool according to claim 11 or 12, characterized in that the collet ( 19 ) a plurality of radially movable conical segments ( 32 ), which by blind slots ( 33 ) are formed, which extend in the axial direction. Milling and deburring tool according to claim 13, characterized in that the collet chuck ( 19 ) is formed as a double cone, wherein the segments ( 32 ) are conical in two opposite directions. Milling and deburring tool according to one of claims 11 to 14, characterized in that the shank ( 18 ) of a rinsing sleeve ( 22 ) is surrounded. Milling and deburring tool according to one of claims 1 to 15, characterized in that in the base body ( 2 ) a chamber ( 24 ) is formed, which receives a fluid for cooling during milling operations or deburring operations. Milling and deburring tool according to claim 16, characterized in that of the chamber ( 24 ) a first fluid line ( 25 ) to the holding device ( 7 ), wherein in the holding device ( 7 ) a second fluid line ( 26 ) to the milling head ( 6 ) leads. Milling and deburring tool according to claim 17, characterized in that the second fluid line ( 26 ) of the holding device ( 7 ) in an at least partially conical collet chamber ( 20 ) opens. Milling and deburring tool according to one of claims 1 to 18, characterized in that between the holding device ( 7 ) and the basic body ( 2 ) a fluid seal ( 27 ) and a dirt seal ( 28 ) are arranged. Milling and deburring tool according to one of claims 1 to 19, characterized in that the milling head ( 6 ) at its base ( 2 ) facing away from a first conical milling ring ( 29 ) and at its the base body ( 2 ) end facing a second conical milling ring ( 30 ), wherein the taper of the Fräskränze ( 29 . 30 ) is formed in opposite directions and the milling head ( 6 ) an equator ( 31 ) trains. Method for machining a workpiece, in which a milling and deburring tool ( 1 ) is set in rotation according to one of the preceding claims, is forcibly guided in rotation on a web and thereby rests under pressure on the workpiece and in deviation of the machined contour of the workpiece from the predetermined path of the milling and deburring the milling head of the same up and Abbewegung carried out in the axial direction. A method according to claim 21, characterized in that the milling and deburring tool ( 1 ) is forcibly guided on a linear or on a curved path. Method according to one of claims 21 to 22, characterized in that by the milling and deburring tool ( 1 ) Milling a surface is milled into the workpiece. Method according to one of claims 21 to 23, characterized in that by the milling and deburring tool ( 1 ) a chamfer is milled into the workpiece having a chamfer angle of 30 ° to 60 °, preferably 45 °.