Shrink fit chuck with novel attenuation

Abstract

To provide a shrink fit chuck with novel attenuation.SOLUTION: The invention relates to a clamp chuck for clamping a tool having a tool shank. The clamp chuck is provided with a sleeve part (4). The sleeve part (4) opens at its free end, is composed preferably of a conductive material, and forms a tool holder (5) for frictionally engaging and fixing the tool shank by press-in by shrink fit. In the clamp chuck, the sleeve part (4) is preferably composed of an inner sleeve (7) across its full length in an axial direction of the tool holder (5) and an outer sleeve (8) which receives the inner sleeve (7) in the state dynamically prepared, is bonded to the inner sleeve (7) without a play and is preferably composed of a conductive material.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a clamping chuck according to the preamble of the independent claim, to its particular use, and to a clamping chuck system formed thereby, all of which are in each case according to the preamble of the corresponding main claim.

Background Art

[0002] Background Art Clamping chucks in the form of shrink-fit chucks are very well established in practice because they can apply a very high holding force with little effort. Furthermore, they offer the possibility of holding the clamping tool with a high bending stiffness so that the tool is accurately guided during the cutting operation and a very accurate geometric shape of the workpiece is produced. However, at the same time, they often clamp the tool shank very severely or rigidly, and as a result, vibration problems become prominent.

[0003] The quality of clamping of the shank tool is very important both for achieving the machining quality by the tool and often also for the tool life.

[0004] All of this is even more applicable, especially to high-speed cutting of metals at cutting speeds exceeding 800 m / min or even more than 1100 m / min.

[0005] The quality of clamping also depends, inter alia, on how much vibration that may occur can be damped. A substantial cause of such vibrations can be, for example, a sudden change in the number of milling cutters currently engaged with the workpiece to remove chips. These can, for example, cause very harmful torsional vibrations.

[0006] However, other equally harmful vibrations can arise from the tendency of the shank tool, particularly the end milling cutter, to roll during operation. Rolling is understood to mean a slight elastic deformation of the shank that occurs repeatedly with each rotation and changes locally due to contact with the workpiece under the feed load during the course of rotation. [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] assignment Therefore, the problem addressed by the present invention is to identify a tool clamp chuck that can apply a large clamping force while also appropriately handling the resulting vibrations. [Means for solving the problem]

[0008] solution The solution is undertaken by the features described in claim 1, the features of the further independent claim 19, similarly the features of independent claim 21, or the features of any further technique submitted relating to the main claim.

[0009] For this purpose, claim 1 proposes a tool clamp chuck for clamping a tool having a tool shank, the tool clamp chuck having a sleeve portion, the sleeve portion opening at the free end of the sleeve portion, and preferably made of a conductive material. The sleeve portion forms a tool holder for frictionally locking and securing the tool shank by press-fitting by shrink-fit. According to the present invention, the tool clamp chuck is distinguished in that the sleeve portion preferably comprises an inner sleeve and an outer sleeve which receives the inner sleeve in an operationally ready state and is joined to the inner sleeve without play, and preferably also made of a conductive material, extending preferably over the entire axial length of the tool holder.

[0010] This configuration significantly reduces the tendency for the tool clamp chuck to generate harmful vibrations.

[0011] The boundary layer where the inner and outer sleeves contact each other within the tool holder area is likely the cause of this issue. In particular, when metal collides with metal, damping occurs or the ability to transmit vibrations is reduced. This is especially true when the inner and outer sleeves are in contact with each other in a way that prevents them from separating during normal operation, for example, when they are pressed against each other. This is because the inner and outer sleeves are already pressed against each other prior to the clamping of the tool shank and the corresponding prevention of expansion, and this pressure is further increased by the clamping of the tool shank.

[0012] Furthermore, the outer sleeve can therefore be increasingly supported axially on the clamp chuck base. This can be achieved, for example, by a fastening flange on the outer sleeve and a complementary annular shoulder on the clamp chuck base 2. That is, the fastening flange or the outer sleeve is supported axially on the clamp chuck base.

[0013] This configuration also contributes to a significant reduction in the tendency of the tool clamp chuck to generate harmful vibrations.

[0014] The above description relating to advantageous improvements of the present invention includes many features that may be combined and collectively represented in individual dependent claims. However, for convenience, these features may also be considered individually and in combination to form further important combinations.

[0015] In the specification and / or claims, some terms are used in the singular or with numerals, but the scope of the invention is not limited to the singular or with the respective numerals of the terms. Furthermore, the words "a" or "an" should be understood as indefinite articles, not numerals.

[0016] The characteristics, features, and advantages of the present invention described above, as well as the methods by which they are achieved, will become clearer and more understandable when combined with the following description of exemplary embodiments of the present invention, which will be illustrated in detail in conjunction with the drawings / figures (identical components and functions are given the same reference numerals in the drawings / figures).

[0017] The exemplary embodiments serve to illustrate the present invention and do not limit the invention to any combination of features shown herein, even if relating to functional features. Furthermore, any feature of any exemplary embodiment suitable for this purpose may also be considered to be an expressly standalone form, may be removed from one exemplary embodiment, may be introduced to complement it in another exemplary embodiment, and / or may be combined with any of the claims. [Brief explanation of the drawing]

[0018] [Figure 1] The tool clamp chuck according to the present invention is shown. [Figure 2] Further advantageous details of the tool clamp chuck according to the present invention are shown. [Figure 3] Another exemplary embodiment of the present invention is shown. [Figure 4] Another exemplary embodiment of the present invention is shown. [Figures 5a-5d] This indicates a cooling slot or cooling bore, an expansion slot, and one or more dampers. [Figures 6a-6c] This shows a modified form in which an expansion slot and one or more damping elements are realized. [Figures 7a-7d] Embodiments providing a cooling slot or cooling bore, an expansion slot, and one or more dampers are shown. [Figures 8a-8e] This shows a modified form in which a cooling slot or cooling bore, an expansion slot, and one or more damping elements are realized. [Figures 9a-9g] This shows a modified form in which a cooling slot or cooling bore, an expansion slot, and one or more damping elements are realized. [Figures 10a-10g]Shown are modified forms in which cooling slots or cooling bores, expansion slots, and one or more damping bodies are realized.

Mode for Carrying Out the Invention

[0019] Exemplary Embodiment The present invention can be fully described with reference to FIG. 1 using general meanings over a long paragraph. The same applies to other figures that are not described in too much detail.

[0020] The tool clamping chuck 1 has a clamping chuck base body 2. The clamping chuck base body 2 here has, at one of its ends 3, a coupling for coupling to a machine tool, and the coupling is, for example, the HSK coupling of FIG. 1. However, alternatively, an SK coupling or another system is equally suitable. The terms HSK and SK used with respect to the couplings preferably used herein are well-known to those skilled in the art because they are used as standards in many places.

[0021] The tool clamping chuck 1 has an end facing opposite to the coupling and forms a sleeve portion 4. A tool holder 5 for holding the shank of the tool is mounted inside the sleeve portion. Axially rearward of the tool shank, the sleeve portion forms an outlet region 6 that is not used by the tool shank or for holding the tool shank. A coolant can be introduced through the outlet region, and this will be described with reference to another figure in which this is partially disclosed.

[0022] The sleeve portion 4 is designed and used to hold the tool shank in a press-fit manner so that the tool shank does not substantially rotate, axially disengage, or slip relative to the tool holder during operation with the tool. Details of the shrinking process and the corresponding design of the tool clamp chuck are described in German Patent Application Publication No. 19915412(A1), which is fully incorporated into the subject matter of this disclosure and therefore may rely on its features for the limitation of the claims.

[0023] The tool clamp chuck 1 according to the present invention differs from the above in that, with respect to its sleeve portion 4, the sleeve portion 4 is constructed in two layers, as can be seen here in Figure 1, along the axial region that forms the tool holder 5, and in many cases beyond the exit region 6.

[0024] The sleeve portion 4 is constructed of two layers, consisting of an inner sleeve 7 and an outer sleeve 8. The two sleeves are partly made of metal or steel, preferably of different types of steel.

[0025] In one embodiment, the clamp chuck base 2 may be made of different materials. For example, the end portion 3 may be made of steel, and the inner sleeve 7, which is constructed on the end portion 3 by an additive process, may be made of a different material, such as aluminum.

[0026] The inner sleeve 7 and the outer sleeve 8 are connected to each other without any play. This play-free state is generally present even when the tool clamp chuck 1 is not yet clamping the shank and is rather waiting at room temperature for its next use.

[0027] While not always the case, generally, and therefore particularly advantageously, the inner sleeve 7 and the outer sleeve 8 are connected to each other by press-fitting. As a result, they are particularly close due to high vibration damping friction. Press-fitting can be achieved by the inner sleeve 7, which has a conical outer circumferential surface along at least a large portion of the axial length of the tool holder 5.

[0028] Therefore, the outer sleeve 8 has a similarly conical inner peripheral surface that is complementary to the inner sleeve 7.

[0029] The outer sleeve 8 is pressed or compressed axially onto the inner sleeve 7. This can be done by a shrinking operation and / or by a further configuration preferably shown in Figure 1. For this purpose, the outer sleeve 8 has a centering portion 8a adjacent to its actual sleeve portion, which is responsible for holding, and an adjacent fastening flange 9. The fastening flange 9 has a through hole. Here, on the side surface of the clamp chuck base 2, a complementary annular shoulder 28 on the clamp chuck base 2 is assigned to the fastening flange 9, and via the complementary annular shoulder 28, the fastening flange 9 or the outer sleeve 8 is axially supported on the clamp chuck base 2, thereby contributing to rigidity and, in particular, also having a vibration damping effect.

[0030] In this case, the annular shoulder portion 28 has a blind hole with an internal thread at an appropriate position. In this way, by tightening the clamp screw 10, axial pressure can be achieved between the conical surface of the inner sleeve 7 and the conical surface of the outer sleeve 8.

[0031] In this regard, Figure 2 shows further advantageous details, namely, that the fastening flange 9 of the outer sleeve has an additional through hole 11 with a female thread that serves as a push-out member for removing the outer sleeve 8 from the inner sleeve 7 again.

[0032] Here, we will reiterate the centering portion 8a that has already been described. The inner sleeve 7 or the clamp chuck base 2 assigned to it similarly has a complementary centering portion 7a. The design of the centering portion is selected so that, even before pressing between the inner and outer sleeves begins, when the outer sleeve 8 is pressed onto the inner sleeve 7, its centering portion 8a rests on the assigned centering portion 7a while it is resting on the inner sleeve 7. This greatly facilitates the pressing using the screw described earlier.

[0033] As can be seen immediately from Figure 1, it is also worth noting that it has been found to be particularly advantageous when a transition portion 12 is observed between the centering portion and the actual sleeve portion.

[0034] In this transition section 12, the outer sleeve 8 and the inner sleeve 7 are not in contact even when fully installed and ready for use. Advantageously, the same applies to the area near the flange indicated by reference numeral 13 in Figure 1. Here again, there is a distance between the preferably obliquely extending inner portion of the flange 9 and the clamp chuck base 2. This means, and similarly, the described transition section 12 prevents the formation of a dense block prematurely and uncontrolledly when the inner and outer sleeves are joined.

[0035] Further interesting details become apparent from Figure 3, which describes another exemplary embodiment. Unless otherwise explicitly stated below, the foregoing also applies to this exemplary embodiment. Therefore, we will refrain from repeating what has already been stated.

[0036] This exemplary embodiment is distinguished in that it is equipped with tool cooling.

[0037] For this purpose, a cooling lubricant is typically introduced from the machine tool into the tool clamp chuck through a coupling, which is designed here as an HSK coupling. In this case, the introduction is advantageously carried out within the exit region 6.

[0038] In this exemplary embodiment, the outlet region 6 is connected to at least one further cooling duct by a radially outward-extending bore 14 or at least one separate bore of this type. This further cooling duct is formed, for example, by forming at least one substantially axially-extending coolant groove 15 within the outer sleeve 8, as shown in Figure 3. The coolant groove opens at its opening 16 on the free-end ring surface of the sleeve portion, from which coolant is output to the tool. Typically, multiple coolant grooves 15 (generally three or four such coolant grooves) are formed (compared to Figure 3a).

[0039] To prevent the coolant from entering further inward between the inner sleeve and the outer sleeve, a seal ring or O-ring 20 is provided between the outer surface of the inner sleeve and the inner surface of the outer sleeve, specifically within an annular groove 27 provided on the outer surface of the inner sleeve.

[0040] Figure 3 shows a further interesting feature that can be realized in the case of the tool clamp chuck according to the present invention. As can be seen from the figure, the inner sleeve may have at least one, generally more than one, expansion slot 17. These expansion slots 17 typically do not extend axially throughout the entire inner sleeve 7, but rather extend only along their central region between the two non-contact end ring surfaces. It may be advantageous for each of the expansion slots 17 to have a stress concentration relief bore 18 at one end, preferably facing away from the free end of the sleeve portion.

[0041] Instead of the conical pressure between the inner sleeve 7 and the outer sleeve 8, a pressure as shown in Figure 4 may be provided, to which the same applies unless otherwise becomes clear from the following description. In this case, the outer circumference of the inner sleeve 7 and the inner circumference of the outer sleeve 8 are cylindrical rather than conical in each case. Nevertheless, pressure occurs because the outer diameter of the outer circumference of the inner sleeve 7 is larger in the diametrically than the inner diameter of the outer sleeve 8. Thus, the two parts can also be joined in this case by the outer sleeve 8 being axially pressed onto the inner sleeve 7 by a shrinking process or by a corresponding press machine.

[0042] Further features are evident from the other attached figures (see Figures 5-10) or from the descriptions in the figures relating to tool clamp chuck 1, but will not be detailed here. The features described above (in Figures 1-4) have the same reference numerals in the further figures.

[0043] For example, an interesting variant that may be shown in Figures 5 to 10 includes providing a groove 27 in which a damper 19 is positioned, preferably axially, in the guide region or (sometimes called the centering region) 8a or 7a, particularly on the tool holder base 2, but not necessarily limited to the tool holder base 2. The substantially nonmetallic damper 19 is preferably rubber, natural rubber, or elastomer.

[0044] Figure 5 further shows, in particular, the cooling slot or cooling bore, the expansion slot, and one or more dampers.

[0045] Figure 6 further illustrates modified forms in which an expansion slot and one or more dampers 19 are realized.

[0046] Furthermore, Figure 6 shows that at least the outer peripheral surface of the inner sleeve 7 and / or at least the inner peripheral surface of the outer sleeve 8 have a coating 26 that can withstand shrinkage temperatures and preferably has a vibration-reducing effect.

[0047] The modified form shown in Figure 7 also illustrates an embodiment that provides a cooling slot or cooling bore, an expansion slot, and one or more dampers.

[0048] For example, as shown in Figure 7, the seal ring / O-ring 20, which is positioned in an annular groove 27 provided on the outer surface of the inner sleeve 7, is located between the outer peripheral surface of the inner sleeve 7 and the inner peripheral surface of the outer sleeve 8. The seal ring / O-ring can, on the one hand, contribute to preventing the coolant from flowing inward, and on the other hand, it may also have a (vibration) damping effect.

[0049] Figure 8 also shows a modified form in which a cooling slot or cooling bore, an expansion slot, and one or more dampers are realized.

[0050] A more interesting variant shown in Figure 9 is, for example, that the outer sleeve 8 is not fixed to the inner sleeve 7 by screws, but rather welded 21. For this purpose, the outer sleeve is provided with the flange already described, but without, for example, a flange with screw holes, rather, as shown in the figure, the flange is used to create a weld 21 between the outer sleeve 8 and the clamp chuck base 2.

[0051] Another interesting variant shown in Figure 10 is, for example, that the outer sleeve 8 is directly screwed to or onto the inner sleeve 7. For this purpose, the inner sleeve 7 has male threads 22 and the outer sleeve 8 has complementary female threads. Cooling slots or cooling bores, expansion slots, and dampers are also provided here, as also shown in Figure 10.

[0052] For the sake of completeness, please note that all features shown in the figures, individually or in combination, may be essential to the present invention or at least beneficial to it, and therefore should also be requested in a timely manner.

[0053] Various, general meanings As referenced in various places within the scope of this disclosure, the inner and outer sleeves, by their corresponding designs, are preferably both capable of actively acting in the formation of the press-fit (not merely transmitting / transmitting externally generated radial pressure). In some cases, the outer sleeve is primarily or substantially responsible for the active formation of the press-fit.

[0054] Please note that, in general terms, protection may be sought for the following designs as well, depending on the circumstances.

[0055] The tool holder base comprises an inner sleeve 7 fixed to the tool holder base in one piece, preferably formed or cast integrally with the tool holder base, and an outer sleeve 8 pressed onto the inner sleeve 7, which is physically separate from the inner sleeve 7 and applies all, substantially all, or a major portion, or optionally and advantageously, at least 85%, 70%, or 60% of the pressing force for holding the tool shank.

[0056] In other words, protection may also be claimed for designs in which the shrink-fit body, which is not the tool holder base or clamp chuck base itself, but rather a separate entity pressed onto it for the first time, generates the thermally generated shrink-fit pressure to the extent described above. In extreme exceptions (but also claimed if necessary), a damping interposition between the tool shank and the outer sleeve causes the outer sleeve to press in, even if it is merely passive and does not substantially participate in the active generation of the shrink-fit pressure, and therefore may be an inner sleeve.

[0057] For all deformation forms, any important criterion for the mode of damping may be that the outer and inner sleeves are connected to each other only when they are substantially frictionally locked rather than tightly fitted together (as seen in the circumferential direction in either case).

[0058] The disclosure of this particular claim may, advantageously, be combined with other claims and / or parts thereof and / or parts of descriptions or figures shown herein. [Explanation of symbols]

[0059] List of reference symbols 1 Tool clamp chuck 2. Clamp chuck base 3 End 4. Sleeve section 5 Tool Holders 6 Exit area 7. Inner sleeve 7a Centering portion 8 Outer sleeve 8a Centering section 9. Fastening flange 10. Screws for pressing and optionally for pushing off. 11 Through hole, push-out bore / threaded section 12. Transition section 13. Region near the flange 14 Bore 15 Coolant groove 16 Coolant groove opening 17 expansion slots 18. Stress concentration relief bore 19 Damping bodies, damping elements, elastomers 20 seals, sealing rings, O-rings 21 Welded connection 22 Male thread (upper part of inner sleeve) 23 Female thread (outer sleeve top) 24 Coolant bore 26 Coating 27 (ring) groove 28 Annular shoulder

Claims

1. 1. A tool clamping chuck (1) for clamping a tool having a tool shank, the tool clamping chuck (1) having a sleeve part (4) that is open at its free end and that is preferably made of an electrically conductive material and that forms a tool holder (5) for frictionally locking and fixing the tool shank by means of a press-fit by shrink fit, characterized in that the sleeve part (4) preferably consists, in any case over the entire axial length of the tool holder (5), of an inner sleeve (7) and an outer sleeve (8) that receives the inner sleeve (7) in an operationally ready state and is joined to the inner sleeve (7) without play, the outer sleeve (8) also consisting of an electrically conductive material. Tool clamping chuck (1).

2. 2. The tool clamping chuck (1) according to claim 1, characterized in that the outer sleeve (8) is also connected to the inner sleeve (7) by a press fit when the tool clamping chuck (1) is at room temperature and does not clamp the tool shank.

3. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the outer sleeve (8) is designed in such a way that after thermal expansion of the outer sleeve (8) and after insertion of the tool shank to be clamped as intended into the inner sleeve (7), it is prevented from shrinking again by cooling, thereby contributing substantially to the creation of a press-fit in which the tool shank is retained.

4. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the inner sleeve (7) is designed to be in tension in cold conditions and to open by deformation upon the thermal expansion of the outer sleeve.

5. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the inner sleeve (7) and the outer sleeve (8) are made of different materials, for example different types of steel, for example in the form of a hardened, in particular hardened, and therefore preferably wear-resistant steel, for the inner sleeve (7) and a hot-work steel for the outer sleeve (8).

6. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the inner sleeve (7) is a non-removable, preferably integral part of the clamping chuck base body (2), said part also forming a coupling to a machine tool, preferably in the form of an SK or HSK coupling.

7. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the inner sleeve (7) has a cylindrical or conical outer peripheral surface and the outer sleeve (8) has a complementary cylindrical or conical inner peripheral surface, the inner sleeve (7) and the outer sleeve (8) are joined together by pressing, and in the case of a cylindrical design of the two sleeves (7, 8), the inner peripheral surface of the outer sleeve (8) is diametrically undersized with respect to the outer peripheral surface of the inner sleeve (7).

8. 3. A tool clamping chuck according to claim 1, characterized in that the sleeve part (4) forms, preferably completely, substantially or to a large extent, a centering area (7a, 8a) by the inner sleeve (7) having an enlarged outer diameter and the outer sleeve (8) having a complementary inner diameter in an area outside the axial length of the tool holder (5), and that when the inner sleeve (7) and the outer sleeve (8) are pressed axially against one another, the inner sleeve (7) and the outer sleeve (8) first come into contact with one another and are guided over one another without a significant pressing operation, thereby forming a guiding area (7a, 8a), in particular only thereafter entering into a pressing operation outside the guiding area (7a, 8a) while being further pressed against one another.

9. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the guiding or centering area (7a, 8a) merges into the part of the sleeve part (4) assigned to the tool holder (5) preferably via a conical transition section (12).

10. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the outer sleeve (8) preferably forms, in the pushing-in direction, in front of any possible guiding regions (7a, 8a), a flange (9) with a through hole (11), which faces a complementary flange with an internal threaded hole or a freely protruding stud or a complementary annular shoulder (10), which flange or annular shoulder is preferably formed by the clamping chuck base (2) in such a way that the outer sleeve (8) can be pressed onto the inner sleeve (7) by screwing it onto the clamping chuck base (2), and in that a push-off device is preferably provided for pushing the outer sleeve (8) off again, ideally by means of a pressure screw.

11. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the outer sleeve (8) and the inner sleeve (7) are welded or soldered to one another outside the area of ​​the tool holder (5), ideally by welding or soldering the flange (9) of the outer sleeve (8) to the complementary mating flange or to the complementary annular shoulder (10) of the tool holder base (2) at the transition of the flange (9).

12. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that at least the outer peripheral surface of the inner sleeve (7) and / or at least the inner peripheral surface of the outer sleeve (8) have a coating (26) which is resistant to shrinkage temperatures and preferably has a vibration-reducing effect.

13. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the inner sleeve (7) has one or preferably more slots (17) whose ends are in each case generally remote from two end regions of the inner sleeve (7), said end regions in each case essentially forming a circumferentially closed ring, and / or that at least one end of one or more of the slots terminates in a bore (18) which is diametrically enlarged with respect to the slot width.

14. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that at least one coolant duct (15) is formed between the inner sleeve (7) and the outer sleeve (8), preferably the coolant duct mouth (16) at the free end of the sleeve part (4) opens substantially axially for discharging coolant from the coolant duct to the tool, and the at least one coolant duct (15) is preferably formed mainly by a groove in the inner peripheral surface of the outer sleeve (8) or by an essentially circumferentially closed bore through the outer sleeve (8).

15. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the clamping chuck base (2) or the inner sleeve (7) of the clamping chuck base (2) has, preferably axially rearward of the tool holder (5), an insert of damping material, preferably made of rubber, elastomer or comparable plastic, of approximately annular or cylindrical-annular shape.

16. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the clamping chuck base (2) or the inner sleeve (7) of the clamping chuck base (2) has a sealing ring, preferably in the form of a cord seal, in the area in front of the insert of damping material.

17. 3. A tool clamping chuck (1) according to claim 1 or 2, characterized in that the insert of damping material and / or the sealing ring are at least substantially within an area that can be maintained free of harmful heat upon removal due to shrink fit and contraction of the tool shank.

18. Use of the tool clamping chuck (1) according to claim 1 or 2 in high speed cutting, in particular high speed milling, at cutting speeds of more than 800 m / min, preferably more than 1100 m / min.

19. A tool clamping chuck (1) for clamping a tool having a tool shank, the tool clamping chuck (1) having a sleeve portion (4) for clamping or shrink-fitting the tool shank, the sleeve portion (4) consisting of an inner sleeve (7) and an outer sleeve (8) which receives the inner sleeve (7) in an operationally ready state, preferably without play, ideally always without play, and which is joined to the inner sleeve even during clamping or unclamping, the sleeve preferably actively and substantially participating in generating a press-fit retention of the tool shank.

20. A tool clamping chuck (1) according to claim 19, characterized in that it has individual or all of the features of claim 1 or 2 and / or the associated drawings and brief description of the drawings.

21. 3. A system for tool clamping, comprising at least one tool clamping chuck (1) according to claim 1 or 2 and a shank tool matched to said at least one tool clamping chuck (1) in terms of shank nominal diameter.

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