EP1896206A1

EP1896206A1 - Interface of a tool system

Info

Publication number: EP1896206A1
Application number: EP06754411A
Authority: EP
Inventors: Dieter Kress; Friedrich Häberle
Original assignee: Mapal Fabrik fuer Praezisionswerkzeuge Dr Kress KG
Current assignee: Mapal Fabrik fuer Praezisionswerkzeuge Dr Kress KG
Priority date: 2005-06-20
Filing date: 2006-06-16
Publication date: 2008-03-12
Also published as: WO2006136338A1

Abstract

An interface of a tool system (1 ) is proposed, at which at least two parts (3, 5) of the tool system can be connected to one another, the end face of the one part bearing against the end face of the other part at least in certain places. The end faces (25, 27) have radially running recesses (29) and prominences (31) which are designed to be complementary, so that the resulting contour of the one end face can engage in the other in the assembled state of the interface (7). The interface is distinguished by the fact that the recesses (29) and prominences (31) become wider from inside to outside - preferably continuously.

Description

Interface of a toolbox

description

The invention relates to an interface of a tool system according to the preamble of claim 1 and to a tool system according to the preamble of claim 8.

Interfaces and tool systems are basically known, wherein interfaces serve to connect parts of a tool system with each other, be it a connectable with a machine tool holder with a tool head, a holder with an adapter, an adapter with a tool head, an adapter with a tool insert or similar. The parts of a tool system can ultimately be designed as needed. Between each two adjoining parts of the tool system, an interface is provided, on which two parts of the tool system can be connected to one another. In this case, the end face of one part adjoins the end face of the other part. It has been found that, in particular in the fine and ultra-fine machining of tool surfaces by means of machining, the connection accuracy of the two parts of the tool system given in the region of the interface is not sufficient. In many cases, the transmittable torque is not large enough.

The object of the invention is therefore to provide an interface and a tool system that do not have these disadvantages.

To solve this problem, an interface is proposed which has the features mentioned in claim 1. The interface serves to interconnect two parts of a tool system connect, in such a way that end faces of the two parts bear against each other at least partially. The interface is characterized in that they have radially extending depressions and elevations, which are formed complementary. Therefore, the contours provided on the end faces of the parts can interlock in the assembled state of the interface. An additional special adaptation of the two end faces is not required, so that parts of a tool system in the region of an interface can be connected to one another as desired.

Preferred is an embodiment of the interface, which is characterized in that the recesses and elevations are formed continuously, so can transmit very high forces.

In a further preferred exemplary embodiment, it is provided that the recesses and elevations become wider and / or deeper and / or higher from the inside to the outside. Embodiments in which the depressions and elevations change their shape continuously are particularly preferred. On the one hand, this embodiment allows the transmission of particularly high torques, on the other hand, the parts of the interface are positioned exactly to one another.

In a particularly preferred embodiment, it is provided that the end faces of the parts of a tool system have a central opening for a fastening element. It is therefore possible, for example, to clamp the two parts together by means of a screw that penetrates the interface. It is conceivable but also to use a tie rod, which braces the two parts together in the axial direction.

Further embodiments emerge from the subclaims.

The invention is also achieved by a modular tooling system according to the preamble of claim 8, comprising at least two parts which are interconnected by means of an interface as explained above.

Preferred is an embodiment of the modular tool system, in which all parts have an end face with recesses and elevations. In this way, the parts of the tool system can all be interconnected.

Particularly preferred is an embodiment of the tool system in which at least one part on both sides recesses and elevations, so that on both sides other parts of the tool system can be attached. In this way, intermediate elements can be realized, which can be interpreted for different applications.

Further embodiments emerge from the subclaims.

The invention will be explained in more detail below with reference to the drawing. Show it:

Figure 1 is a partial view of a first embodiment of a tool system;

FIGS. 2a to 2c parts of a tool system according to FIG. 1; Figure 3 is a partial view of a modified compared to Figure 1 tool system;

Figure 4 is a partial view of a second embodiment of a tool system;

FIGS. 5a to 5b parts of a tool system according to FIG. 2;

Figure 6 is a partial view of a modified embodiment of a tool system;

Figure 7 is a partial view of a modified embodiment of a tool system and

Figure 8 is a partial view of a modified embodiment of a tool system.

1 shows a partial view of a first embodiment of a tool system 1 with two parts 3 and 5, which are connected to each other via an interface 7. The first part 3 is, for example, a tool holder, which is shown here aborted and is either picked up directly by the spindle of a machine tool, not shown here, or held by intermediate pieces, adapters or the like thereof. At the tool holder, the second part 5 is fixed, which is designed here as a tool head. The attachment of the first part 3 on the second part 5 takes place here by means of a designed as a screw fastener 9, which penetrates the second part 5 and engages in a provided in the first part 3 thread. The first part 3, the second part 5 and the screw 9 lie on a common central axis 11. FIG. 1 shows, in cross-section, a part of a workpiece 13 to be machined, which here has a recess 15. The workpiece is substantially annular in this case, with FIG. 1 only reproducing its upper part, which is arranged above a rotation axis 17 of the workpiece 13.

The second part 5 is used here to introduce a groove 19 in the inner surface 21 of the recess 15 of the workpiece 13. In this case, the second part 5 is a turning tool which is held stationary while the workpiece 13 rotates about its axis of rotation 17, which here runs essentially parallel to the central axis 11 of the tool system 1. The rotational movement of the workpiece 13 is indicated by an arrow 23.

From Figure 1, therefore, the use of the tool system 1 as a turning tool is visible.

The depth of the groove 19 can be determined by a relative movement between the tool system 1 and the workpiece 13, wherein the depth of the groove 19 can be increased by increasing the distance between the central axis 11 and axis of rotation 17.

In the production of the groove 19, a relative movement between the workpiece 13 and the tool system 1 in the axial direction can be made to specify the width of the groove 19.

The tool system 1 shown in FIG. 1 is therefore used to machine a workpiece 13, namely the inner surface 21 of a recess 15. By way of example, a groove 19 is hereby inserted into the inner surface 21. The processing of a Workpiece 13 is known in principle, so that will not be discussed in detail.

The first and second parts 3 and 5 of the tool system 1 are connected to one another via an interface 7, here indicated by a zigzag line, which runs essentially perpendicular to the central axis 11 of the tool system 1. In the area of the interface 7, the first part 3 of the tool system 1 with its right end face 25 is connected to the left end face 27 of the second part 5 of the tool system.

By the zigzag line is indicated that on the front side 25 of the first part 3 elevations and depressions are provided, which extend substantially radially to the central axis 11. Accordingly, on the end face 27 of the second part 5 also radially extending recesses and elevations are provided, the complete It thus results on the end faces 25, 27 contours, which interlock when the two parts 3, 5 of the tool system 1 in the region of the interface 7 joined together and with the aid of a fastener, So here by means of the screw 9, be clamped together. The end faces are designed to be complementary, that is to say that the elevations and depressions of one side can engage in that of the other side in order to transmit a torque. All you have to do is divide them. A similar design of the elevations and depressions is ultimately not mandatory, but usually provided. Thus, a Hirth toothing is realized here in order to be able to transmit torques across the interface. FIGS. 2 a, 2 b and 2 c show parts which are used in connection with a tool system 1, as explained with reference to FIG.

In FIG. 2a, the second part 5, which has been explained with reference to FIG. 1, is shown on the left in a side view. The left end face 27 is, as stated, provided with recesses 29 and elevations 31, which are part of the explained with reference to Figure 1 interface 7. Shown in dashed lines, a passage extending concentrically with respect to the center axis 11 is shown, through which a fastening element formed here as a screw 9 can run. The right end face 33 forms, as it were, the front end of the tool system 1 according to FIG. 1. It can have a substantially planar design and optionally also have a countersink, into which the head of the screw 9 engages when the second part 5 engages with the first part 3 of FIG Tool system 1 is to be connected.

Right in Figure 2a, the second part 5 is shown in plan view, in which case the left end face 27 with the recesses 29 and elevations 31 can be seen.

The plan view in Figure 2a reveals that the recesses 29 and elevations 31 extend radially to the central axis 11 and are preferably formed continuously, so continuously from the provided for the screw 9 passage to the radially outer edge of the end face 27 extend. It can also be seen from this illustration that the depressions 29 and elevations 31 become wider from the inside to the outside. You can also get deeper or higher. The plan view in FIG. 2 a shows that the second part 5 has a cutting edge 35, with the aid of which chips can be removed from the inner surface 21 of the recess 15 of the workpiece 13. This is a geometrically defined cutting edge, which is designed as a rotary blade.

The outer configuration of the second part 5 does not matter here. It is crucial that it has recesses 29 and elevations 31 on one side, namely in the region of an end face 27, which are part of an interface 7.

FIG. 2b shows a third part 37 which is not used in the tool system 1 according to FIG. 1 and which has recesses 29, 29 'and elevations 31, 31' at its two front sides, the depressions 29 and elevations 31 on the left end side 39 and the recesses 29 'and elevations 31' on the right front side 41 of the third part 37 are provided.

In the third part 37 a concentric to the central axis 11 extending through hole is also provided, which can be penetrated by a fastener, for example by a screw 9.

In the embodiment shown in Figure 2b of the third part 37 is an intermediate piece, which has a - preferably cylindrical - peripheral surface 43 whose distance from the central axis 11 is smaller than the distance of the cutting edge 35 to the central axis 11 of the second part fifth This ensures that the third part 37 does not come into contact with the inner surface 21 during the machining of a workpiece 13 and thus interferes with the processing. On the left in Figure 2b, the third part 37 is shown in side view, right in Figure 2b in plan view. Since the two end faces 39 and 41 are formed identically, that is, the top view on the right in FIG. 2 corresponds to a plan view of the left end face 39 and a top view to the right end side 41. Here again, the depressions 29 and elevations 31 are shown are provided on the left front side 39. They correspond to the recesses 29 'and elevations 31' on the right front side 41st

Due to the fact that the third part 37 has elevations 29, 29 'and depressions 31, 31' on both sides, interfaces can be realized on both sides which correspond to the interface 7 explained with reference to FIG.

FIG. 2 c shows a modified third part 37 a, which corresponds to the second part 5 shown in FIG. 1 from its initial surface, ie has a cutting edge 35. In contrast to the second part 5, the third part 37a has elevations and depressions on both sides, the elevations 29a and depressions 31a being provided on the left side 27a, and the depressions 29'a and elevations 31 on the right end side 27'a 'a recognizable.

The third part 37a is shown in Figure 2c in the middle in side view. To the right of this is a plan view of the front side 27'a and left of it on the end face 27a shown.

The end faces 27a and 27'a are identical. The end face 27'a corresponds to the end face 27 of the second part 5, which has been explained with reference to FIG. 2a. Also, the third part 37a shows a concentric to the central axis 11a extending through hole, which can be penetrated by a fastener, such as a screw 9, to attach right and left to the third part 37a adjacent parts and to realize right and left interfaces, as explained with reference to FIG. 1 in connection with the interface 7.

A comparison of FIGS. 2 b and 2 c shows that the tool system 1 can comprise parts which can have two opposite end faces with recesses and elevations, so that further parts of the tool system 1 can be attached on both sides.

The outer contour of the third part can be interpreted differently. It is thus possible to form a third part 37, as illustrated with reference to FIG. 2b, with a circumferential surface which is at a radial distance from the central axis 11, which is smaller than the distance of the cutting edge 35 from the central axis 11. However, it is also possible, as explained with reference to Figure 2c, a third part 37a in such a way that it can be used as a tool, for example as a turning tool, as was explained with reference to the second part 5 in Figure 2a.

Of course, can be provided on one of the end faces 29a, 29'a of the third part 37a and on one of the end faces 39, 41 of the third part 37 according to Figure 2b, or on both sides of a countersink, in which the head of a screw 9 engages. Thus, the third part 37 or 37a, as the second part 5 can be attached according to Figure 1 to a first part 3. It is thus possible to use parts which have depressions and elevations on both sides in the same way as the second part 5 of the tool system 1 according to FIG. 1, that is to say as the end part of a tool system.

Incidentally, it should also be pointed out that the tool system 1, as explained with reference to FIGS. 1, 2a to 2c, should also be used for machining on the outside of a workpiece 13, be it piercing a groove or the peripheral surface of the workpiece Tool 13 to edit.

FIG. 3 shows a partial view of a tool system 1 modified relative to FIG. 1. The same parts are provided with the same reference numbers, so that reference is made to the explanations regarding FIGS. 1, 2 a, 2 b and 2 c.

The tool system shown in FIG. 3 is characterized in that it has two additional parts which have been inserted between the first part 3 shown in FIG. 1 and the second part 5 shown there. These are the parts 37 and 37a shown in FIGS. 2b and 2c. The third part 37a adjoins the first part 3 of the tool system 1, the end face 25 of the first part 3 abutting against the left end side 27a of the third part 37a. Its right end face 27'a rests against the left end face 39 of the third part 37, the right end face 41 of which rests against the left end face 27 of the second part 5.

In the embodiment of the tool system 1 shown in FIG. 3, the second part 5 again forms the tool head. At a distance therefrom, which is defined by the axial length, measured in the direction of the central axis 11, of the part third serving part 37 is defined, there is a second tool element, which is realized by the third part 37 a.

The serving as a holder first part 3 thus holds two tool elements which are held by an intermediate part in a defined distance from each other.

As shown in FIG. 3, the tool system 1 shown here serves, by way of example, to introduce two spaced-apart grooves 19 and 19 'into a workpiece 13, namely in its inner surface 21. Of course, it is also possible to use the here designed as a turning tool tool system 1 to introduce outside into a workpiece grooves.

The contour of the grooves produced depends on the design of the parts of the tool system 1 serving as a tool, in this case on the contour of the cutting edge 35 of the second part 5 and the contour of the cutting edge 35a of the third part 37a and on the relative movement between the tool system 1 and the workpiece 13th

The cohesion of the parts of the tool system 1 is realized by a suitable fastening element, which is realized here by way of example by a screw 9, as has already been explained with reference to FIG.

The tool system 1 according to FIG. 3 has a total of three interfaces, namely the interface 7 in the transition region between the first part 3 and the third part 37a, the interface T between the third part 37a and the third part 37 and the interface 7 "in the transition region between the third part 37 and the second part 5. From the explanations to Figure 3 it is clear that the tool system 1 can be modified. For example, the distance between the grooves 19 and 19 'by the choice of different intermediate pieces are given, which are different in length in the direction of the center axis 11 and have been explained with reference to Figure 2b as a third part 7.

The contour of the grooves 19, 19 'and their width can be determined by different tool inserts, ie by differently configured third parts 37a and / or by differently designed second parts. 5

The bracing of the parts of the tool system 1 takes place here by way of example by means of a designed as a screw fastener 9. But it is also possible to provide along the central axis 11, a tie rod which takes over the acting in axiaier direction clamping forces of the screw 9 and the parts of the tool system 1 firmly clamped together.

The arrow 23 in FIG. 3 again indicates that during machining of the workpiece 3, which here is substantially annular, it is set in rotation while the tool system 1 is held in a rotationally fixed manner.

Figure 4 shows a partial view of a second embodiment of a tooling system 1, wherein the same parts are given the same reference numerals to avoid repetition. The tool system 1 accordingly has a first part 3, which serves as a tool holder. At its right end face 25, a second part 5, designed as a tool head, is connected via an interface 7 attached, wherein the second part 5 rests on its left end face 27 on the right end face 35 of the first part 3.

A zigzag line indicates that here too the end faces 25, 27 are provided with indentations and elevations for the realization of an interface 7, which extend radially relative to the center axis 11 of the tool system and are complementary to one another, so that the resulting contour of the one end face in the assembled state of the interface 7 in which the other can intervene.

The two parts 3 and 5 of the tool system are connected to each other by means of a screw 9, which serves here as a fastener, the second part 5 penetrates and engages in a thread, which is provided in the first part 3.

An arrow 43 indicates that the tool system 1 here rotates about its center axis 11, ie is not held stationary. Since the second part 5 is provided with at least one geometrically defined cutting edge 35, it is possible to remove chips from a workpiece 13 and, for example, to produce a groove 19. Its contour is determined by the configuration of the cutting edge 35, its width by the width of the cutting edge 5 measured in the direction of the central axis 11. The depth of the groove 19 is determined by the tool system 1 perpendicular to its central axis 11 relative to the workpiece 13th performs - and / or this compared to the tool system 1 - so that more or less chips are removed from the workpiece 13 in the region of the groove. The tool system 1 shown in Figure 4 thus forms a milling tool, which is also, with a suitable design of the cutting edge 35, in the direction of the central axis 11 relative to the tool 13 displaced.

Parts of a tool system 1 according to FIG. 4 are shown in FIGS. 5a, 5b, 5c and 5d.

In FIGS. 5a and 5b, side views of a second part 5 of a tool system are shown on the left. Coincidentally, it is provided here that the second parts 5 only have a front side 27, 27 'provided with recesses 29, 29' and elevations 31, 31 'on the left side. The opposite end face S, S 'is flat, so has no depressions and elevations.

The second parts 5, 5 'have at least one geometrically defined cutting edge 35, 35'.

To the right of the side views, a plan view of the left side of the second part 5, 5 'is shown in FIGS. 5a and 5b. This makes it clear that the second part 5 according to Figure 5a has six arranged in a uniform circumferential distance and pairs opposed cutting edges 35, while the second tool 5 'according to 5b only three such cutting 35' are provided, which are arranged at a uniform circumferential distance from each other ,

The second parts 5, 5 'have a concentric to the central axis 11, 11' extending through hole, which are provided in the region of the end face S, S 'with a chamfer to accommodate a screw head can. On the right side in Figures 5a and 5b, this through hole is also visible, also the radially extending, outwardly continuously expanding recesses 29, 29 'and elevations 31, 31'.

Since the passage opening is provided here, the end faces of one part lie partially against the front side of another part in order in each case to realize an interface.

FIG. 5c shows a third part 37 designed as an intermediate element, which can also be used in conjunction with a tool system 1 according to FIG. The third part 37 is constructed identically to that explained with reference to FIG. 2b. In this respect, reference is made to the explanations for Figure 2b, wherein like parts are provided with the same reference numerals.

FIG. 5d shows a modified exemplary embodiment of a third part 37a, which basically corresponds to the one shown in FIG. 2c. On the left in FIG. 5d, the side view of the third part 37a is shown. It is also provided here that depressions 29a and elevations 31a and 27a extending radially to the central axis 11 'are provided on the left end side 27a depressions 29a and elevations 31a. However, it is clear that the dimension of the depressions 29'a and 31'a measured in the radial direction is smaller than the depressions 29a provided on the opposite side and elevations 31a.

On the right in FIG. 5d, the top view is again shown on the left side of the second part 37a, which is of identical construction to that of the second part 5 'according to FIG. 5b. In this respect, therefore, the References to Figure 5b referenced. The outer contour of the third part 37a according to FIG. 5d also corresponds to that of the second part 5 'according to FIG. 5b, ie deviates from that of the third part 37a according to FIG. 2c.

The parts explained in FIGS. 5a to 5d can be arranged in the manner explained with reference to FIG. 3: A first tool element, for example the third part 37a, adjoins the first part 3 of the tool system 1 serving as a tool holder. At a distance to this, which is defined by the serving as an intermediate element third part 37, a tool head is arranged, which is realized by the second part 5.

This results in a structure as shown in FIG. However, instead of rotary cutters, cutters are used, as shown and explained particularly clearly in FIGS. 5a, 5b and 5d.

FIG. 6 shows a modified embodiment of a tool system 1, similar to that shown in FIG. The basic structure of the tool system 1 also corresponds to that according to FIG. 1. However, as indicated by the arrow 43, the tool system 1 is set in rotation so that it rotates about its central axis 11. Again, a first part 3 is provided, which merges via an interface 7 in a second part 5. The interface is identical, as explained above, so that will not be discussed here in detail.

The two parts 3 and 5 are clamped together by a suitable fastener, here by a screw. 9 The second part 5 is formed here front-cutting, so that the tool system 1 is adapted to, for example, an annular groove to stab into the bottom of a hole. In principle, it is also possible to design the second part 5 such that it can be drilled into the solid with the tool system 1.

From the design of the second part 5, it depends on whether it can be drilled with the tool system 1 in full, or whether only a boring of an existing hole is possible.

The detailed design of the second part 5 is irrelevant to the basic idea of the tool system 1. It can be adapted to desired applications.

FIG. 7 again shows a modified exemplary embodiment of a tool system 1 with the aid of which a stepped bore 45 in a workpiece 13 can be machined. The tool system 1 can thus represent a stepped drill or a stepped reamer. The basic structure of the tool system 1 results ultimately from the explanations to the preceding figures: From a serving as a tool holder first part 3, a second part 5 is mounted, in which case a third part 37a between the parts 3 and 5 is provided. The three parts are clamped together by a suitable fastening element, here by a screw 9, wherein between the first part 3 and the third part 37a an interface 7 and between the third part 37a and the second part 5 an interface 7 ^{1 is} formed.

The third part 37a is provided on both sides with recesses and elevations, wherein on the left side of the diameter of the recessed and raised areas provided area larger is the area provided with depressions and elevations on the right side. It therefore corresponds to that shown in Figure 5d.

The second part 5 and the third part 37a are here equipped with at least one geometrically defined cutting edge, with the help of which, during a rotation of the tool system 1, which is indicated by an arrow 43, 45 chips are removed from the wall of the stepped bore. In this case, the outer diameter of the third part 37a is greater than that of the second part 5.

Also in the embodiment of Figure 7, the configuration of the tool elements, ie here the third part 37a and the second part 5 in the discretion of a person skilled in the art.

Figure 8 shows a modified embodiment of a tool system 1 with a first part 3, which serves as a tool holder, and designed as a tool head second part 5. The number and design of the provided on the second part 5 cutting is adaptable to the particular application, so that the Tool according to Figure 8 is basically used as a turning, milling or drilling tool. Here is an example of a milling tool shown.

The second part 5 is provided with a fastening element 9 ', which is fastened in a suitable manner to the first part 5, for example screwed to it. At its end remote from the second part 5, it has a clamping head 45, which can be detected by a clamping device 47 on the first tool part 3. In FIG. 8, the two parts 3 and 5 of the tool system 1 are at a distance arranged to each other, so that Figure 8 is ultimately an exploded view.

In the assembled state depressions and elevations on the mutually facing end sides of the tool parts 3 and 5 abut each other, so that an interface 7 is formed. In this case, the clamping head 5 comes to lie in the interior of the first part 3 and is detected by the clamping device 47.

For the functioning of the interface 7 and the tool system 1, the following is to be stated consistently for all exemplary embodiments:

The tool system 1 has at least two parts 3 and 5, which merge into one another via an interface 7. The number of parts of a tool system is freely selectable. 3 shows, for example, an exemplary embodiment of a tool system 1 which comprises a total of three parts, wherein two of the parts are designed as tool elements which serve for machining a workpiece 13 and are held by an intermediate element at an axial distance from each other.

The design of the tool elements is also freely selectable. Their distance is adjustable by serving as an intermediate element third part 37.

For the interface 7, the mutually facing end faces are provided in the region of an interface with depressions and elevations which lie against each other at least in some areas and engage in one another. There are provided here radially extending depressions and elevations, which are complementary and, for example When viewed in cross-section, they are symmetrical, preferably V-shaped, so that the resulting contour of one end face in the assembled state of the interface engages in one of the opposing ones and thus the transmission of a torque is possible.

Preferably, the here radially extending depressions and elevations are complementary and - viewed in cross section - asymmetrical, preferably formed like a sawtooth. The resulting contour of a front side engages in the assembled state of the interface in the one opposite, so that the transmission of torque and the positioning of the interface associated parts is exactly possible.

Sawtooth-shaped here means a contour which has a first flank which drops perpendicular to an imaginary plane on which the center axis of the tool system is perpendicular. From the highest point of the first flank, a second flank falls off at an angle to the imaginary plane. Seen in cross-section thus results in a contour, with a vertically sloping first edge and an adjoining inclined second flank. The vertically sloping first flank points in the direction of rotation of the tool system, so that no forces directed in the axial direction, that is to say in the direction of the center axis 11 of the tool system 1, are built up when a torque is transmitted in the area of the interface. As a result, the two parts assigned to an interface lie firmly together even when a torque is transmitted, and fastening elements used for clamping the parts of an interface, for example Tie rods or screws 9, not exposed to additional axial forces.

The transmission of a torque in the region of the interface thus does not change the contact forces of the two parts assigned to the interface, resulting in an optimal alignment of the parts assigned to the interface and a lower load on the fastening elements.

The depressions and elevations widen outward starting from the center axis 11 of the tool system 1, so that they are capable of transmitting large torques in the region of the interface for large diameters of the associated parts. They can also become deeper or higher to the outside.

It is particularly favorable that due to the complementary contours formed on all end faces any replacement of the individual parts of a tool system is possible and a modular tool system is created, which reduces the storage costs and the manufacturing cost. It is also possible that

Tool elements on both sides are provided with contours of the type discussed here, but nevertheless on the front side of a

Tool can be used as a tool head.

Incidentally, since the contours are the same at the end faces of all parts of the tool system 1, end faces of different diameters can be combined with each other, even if the diameter of adjacent end faces is different. For the bracing of the parts with each other fasteners of different types can be used, so known drawbars, screws 9 or the like, as explained with reference to the figures.

The particular type of toothing in the region of the interfaces thus permits, in particular, the realization of a modular tool system in which parts such as tool elements, intermediate elements, adapters and the like of the most varied design can be combined with one another and thus adapted to different applications.

It is therefore possible to realize cutting edges adapted to different machining situations and materials on the tool elements. Also, a targeted replacement of individual tool elements in case of wear or destruction is possible. If two tool elements are arranged at a defined distance from one another, they can be reworked in the event of wear. Should change the given in the direction of the central axis of the tool system 1 axial distance active cutting, this can be compensated by targeted replacement of lying between two tool elements intermediate elements.

The tool system 1 is characterized by a high degree of flexibility, which is based on the fact that all end faces are provided with the same elevations and depressions, which are formed complementary. This makes it possible to join the end faces of different parts of the tool system 1 to one another. For example, the depressions and elevations in the cross section are hen triangular shaped, as indicated by the zigzag line in the region of the interfaces 7 in the figures.

Due to the radial arrangement of the depressions and elevations, the clamping of two parts in the region of an interface 7 results in a centering of the two adjoining parts without further ado, so that a high machining accuracy is ensured without requiring complex centering devices.

The tool system described here ultimately comprises a Hirth toothing in the area of the interfaces. Concepts for processing stepped bores, for interpolation milling of grooves, recesses and threads and for solid boring can be set up in a very flexible, comparatively simple and cost-effective manner.

Claims

claims

1. Interface of a tool system (1) on which at least two parts (3,5) of the tool system are connectable to each other, wherein the end face of the one part at the end face of the other part at least partially applied, wherein the end faces (25,27) radially extending recesses (29) and elevations (31) which are formed complementary, so that the resulting contour of one end face in the assembled state of the interface (7) can engage in the other, characterized in that the recesses (29) and increases (31) from the inside to the outside - preferably continuously - wider.

2. Interface according to claim 1, characterized in that the recesses (29) and elevations (31) are formed continuously.

3. Interface according to claim 1 or 2, characterized in that the recesses (29) - in cross-section - are symmetrical, preferably V-shaped.

4. Interface according to one of the preceding claims, characterized in that the elevations (31) - in cross-section - are symmetrical, preferably V-shaped.

5. Interface according to claim 1 or 2, characterized in that the recesses (29) - seen in cross section - are asymmetrical, preferably sawtooth-shaped.

6. Interface according to claim 1, 2 or 5, characterized in that the elevations (31) - seen in cross section - are asymmetrical, preferably sawtooth-shaped.

7. Interface according to one of the preceding claims, character- ized in that the end faces (25,27) has a central

Having opening for a fastener (9).

8. Interface according to one of the preceding claims, characterized in that the end faces have different diameters.

9. Tool system with at least two parts and an interface according to one of claims 1 to 6, characterized in that it is modular.

10. Tool system according to claim 9, characterized in that all parts of the tool system (1) have at least one end face with depressions and elevations.

11. Tool system according to claim 9 or 10, characterized in that at least one part is provided which has recesses and elevations on both sides.

12. Tool system according to one of the preceding claims 9 to 11, characterized in that all end faces of the tool system have similar depressions and elevations.

13. Tool system according to one of the preceding claims 9 to 12, characterized in that the tool system parts has, whose end face is smaller or larger than those of other parts.

14. Tool system according to one of the preceding claims 9 to 13, characterized in that a turning tool, a milling tool or a drill can be realized.

15. Tool system according to one of the preceding claims 9 to 14, characterized in that multi-stage tools can be realized.