Clamping system

Abstract

The invention relates to a clamping system for clamping a workpiece to a machine table or to a workpiece carrier pallet (13) of a machine tool, said clamping system comprising at least one elongate main body (11) and at least one clamping device (12), wherein the clamping device (12) can be placed on the main body (11) such that at least part of the main body (11) can be received by the receiving groove (35) of the clamping device (12), and the clamping device (12) can be moved, guided by means of the main body (11), along the longitudinal axis (L) defined by the main body (11). The clamping device (12) can be securely clamped to the main body (11) and / or to the machine table or the workpiece carrier pallet (13) by means of the main body clamping mechanism (20).

Description

clamping system

[0001] The invention generally relates to a clamping system for clamping a workpiece on a machine table or a workpiece carrier pallet of a machine tool, which is particularly suitable for machining the workpiece.

[0002] Zero-point clamping systems are used to clamp workpieces in a machine tool, particularly for machining operations such as lathes, CNC milling machines, and the like, using clamping devices such as chucks, on the machine tables or workpiece carrier pallets of the machine tool as quickly, accurately, and repeatably as possible. Zero-point clamping systems can reduce changeover times in production, during which no workpiece machining is possible, thereby improving the production times of the machine tool. Many different variations of zero-point clamping systems are known from the prior art.

[0003] EP 3 756 820 Bl describes a zero-point clamping system with a clamping plate that is permanently attached to the machine tool. The clamping plate has a number of mounting elements that are distributed across the clamping plate and project from it. The zero-point clamping system described there also features a clamping device with several mounting recesses on its underside, into which the mounting elements can be inserted. The clamping device also has a fastening mechanism designed to reversibly and releasably fix the mounting elements when they are positioned in the mounting recess.

[0004] In DE 10 2020 105 722 A, another such zero-point clamping system by Fenbart is described. Here, too, several mounting elements distributed on a clamping plate serve to enable the clamping device to be attached at different locations on the clamping plate.

[0005] DE 10 2016 012 169 also describes fastening devices designed to attach a pedestal, on the top of which the workpiece to be machined can be clamped, to a clamping plate.

[0006] In DE 10 2016 122 090 B4, a clamping system with a reference connection unit and a compensating connection unit is described, which are arranged between the workpiece and a clamping plate with predetermined zero point fixtures and fix the workpiece to the clamping plate.

[0007] Further clamping systems can be found, for example, in DE 10 2021 103 114 Al , EP 3536456 Bl , and CH 713541 A2 .

[0008] The clamping systems described above are The possible positions in which the clamping device can be attached to the machine table of the machine tool are predetermined by the fixed arrangement of the mounting points on the clamping plates, which restricts the positioning of the clamping device on the machine table.

[0009] Based on this, the object of the invention is to provide an improved clamping system with which, in particular, flexible and at the same time precise positioning of the clamping device on the machine table of the machine tool or on the workpiece carrier pallets of the machine tool is possible.

[0010] This problem is solved by the clamping system for clamping a workpiece on a machine table or a workpiece carrier pallet of a machine tool according to claim 1:

[0011] The clamping system according to the invention comprises at least one elongated base body and at least one clamping device. The elongated base body can be fixedly attached to the machine table or the workpiece carrier pallet. The base body also defines a longitudinal axis, which in particular runs within a horizontal plane. The elongated base body extends in particular along the longitudinal axis between two end regions.

[0012] A workpiece clamping device can be arranged, or is arranged, on the upper side of at least one clamping device, by means of which the workpiece can be clamped. The workpiece clamping device can be a separate unit that can be coupled to the clamping device. Alternatively, the workpiece clamping device can be part of the clamping device. The clamping device has a receiving groove with a base clamping device on its underside. The receiving groove can, for example, have a trapezoidal cross-section in at least one area.

[0013] The receiving groove is designed to receive the base body at least section by section, wherein the clamping device is guided by the base body and movable along the longitudinal axis, and can be clamped (reversibly) to the base body and / or the machine table or the workpiece carrier pallet by means of the base body clamping device.

[0014] A special feature of the clamping system according to the invention is that the clamping device can be guided and slid along the longitudinal axis of the base body and can be detachably clamped in a desired position by means of the base body clamping device, thus enabling fine adjustment of the clamping device's position relative to the machine table or workpiece carrier pallet. When adjusting the clamping device's position, one is not bound to predetermined positions for attaching the clamping device, which can result from the relatively coarse grid of the clamping plate in prior art. In particular, when clamping workpieces with different dimensions, the position of the clamping device on the machine table or on the workpiece carrier pallet can be adapted to the workpiece dimensions. This, in particular, prevents the clamping device's position on the machine table from being inconsistent.on the workpiece carrier pallet, it must be determined by a coarse grid in a position that is unfavorable for clamping the workpiece, in which the workpiece, for example, is only. The workpiece clamping device can be used to clamp the workpiece asymmetrically. The ability to flexibly position the clamping device with the workpiece clamping device on the machine table or workpiece carrier pallet prevents unfavorable force distribution when clamping the workpiece.

[0015] It is preferred that the base body has two lateral flanks arranged parallel to each other, wherein at least one of the lateral flanks has a first side contour with which a clamping contour of the base body clamping device can be positively and / or force-fit connected. Because the clamping contour can be positively and / or force-fit connected to the first side contour, a backlash-free connection between the base body and the clamping device can be created. The connection between the clamping device and the base body is particularly reversible. The clamping device can thus be securely and precisely attached to the machine table and / or the workpiece carrier pallet in a desired clamping position relative to the base body.

[0016] In particular, a portion of the receiving groove has a trapezoidal cross-section, preferably dovetail-shaped. A corresponding portion of the base body preferably has a cross-section complementary to that portion of the receiving groove. In the unclamped state, the base body can thus form a linear guide for the clamping device, allowing the clamping device to be movably mounted along its longitudinal axis. In the clamped state, however, the clamping device is held immovably in the clamping position on the machine table and / or the workpiece carrier pallet.

[0017] Preferably, the first side contour has at least one groove with an inclined limiting surface, which is arranged inclined about the longitudinal axis relative to the side flank. The inclined limiting surface is, in particular, inclined at a predetermined first angle relative to the side flank. The first angle can be between 20 and 70 degrees, preferably between 30 and 60 degrees, and most preferably between 40 and 50 degrees. The first angle can be at least substantially 45 degrees. Because the limiting surface of the groove is inclined, when the clamping device is tightened, the underside of the clamping device is pressed / clamped against the top of the machine table and / or the workpiece carrier pallet, so that the clamping device can be attached to the machine table and / or the workpiece carrier pallet securely and precisely.During clamping, the clamping device is clamped downwards against the machine table and / or the workpiece carrier pallet, creating a friction-fit connection between the clamping device and the base body. The longitudinal axis defined by the base body is, in particular, a horizontal axis running lengthwise along the base body.

[0018] The first side contour preferably has a toothed section with multiple teeth, which preferably run along the lateral flank of the base body. The toothing, in particular, forms a (fine) grid with a multitude of defined clamping positions along the longitudinal axis, thereby defining multiple clamping positions for the clamping device. The teeth of the toothing are preferably equidistant from each other. The distance between the clamping positions defined by the teeth can be, for example, in the millimeter range, such as 2mm, 3mm, 4mm, 5mm, or 6mm.

[0019] Preferably, the teeth are each defined by at least two tooth surfaces that are inclined about the longitudinal axis and about a transverse axis relative to the lateral flank, whereby the clamping device, when clamped to the machine table or the workpiece carrier pallet, is centered in a clamping position (in the longitudinal axis direction) that is predetermined by the toothing. The tooth surfaces are preferably at least substantially planar. The tooth surfaces are particularly inclined at a predetermined second angle relative to the lateral flank. The second angle can be between 20 and 70 degrees, preferably between 30 and 60 degrees, and especially preferably between 40 and 50 degrees. The first angle can be at least substantially 45 degrees. Alternatively, the tooth surfaces can be at least substantially convex. When clamped, the clamping device is thus forced downwards against the machine table or the workpiece carrier pallet.The workpiece carrier pallet is clamped so that a friction-fit connection is created between the clamping device and the base body.

[0020] The base body clamping device has, in particular, at least one base body clamping element. The base body clamping element is preferably pin-shaped, with the clamping contour of the base body clamping device being formed in a tip region of the base body clamping element.

[0021] Preferably, the base body clamping element has a clamping tooth with at least one clamping tooth adapted to the shape of the toothing, which engages when clamping the The clamping device engages with the toothing of the fastening contour.

[0022] The clamping teeth allow the clamping device to be positioned along the base body in discrete clamping positions. The tooth surfaces serve as (lateral) guides and simultaneously as clamping surfaces for the base body clamping element.

[0023] It is preferred that the base body clamping device has a clamping mechanism which is configured to move the base body clamping element transversely to the longitudinal axis (along the transverse axis).

[0024] The lateral flanks of the base body are asymmetrically designed, particularly in cross-section, which allows a precise lateral position of the clamping device 12 to be determined during clamping.

[0025] Preferably, the first side contour is formed only on one of the flanks and a second side contour on the other flank.

[0026] In particular, the receiving groove on the side where the second side contour is located is designed to be complementary to the second side contour of the base body.

[0027] On one upper side of the base body, (visible) markings are provided in particular, which give the user visual or haptic feedback on the current position of the clamping device, thus enabling easy and convenient adjustment of the clamping position of the clamping device.

[0028] In another embodiment, the clamping system comprises several clamping devices of the type described above, which are guided and movable along the longitudinal axis of the base body by means of the base body and can be clamped to the base body and / or the machine table or the workpiece carrier pallet by means of their base body clamping devices. This makes it possible to precisely position even workpieces with larger dimensions, especially with multiple clamping devices, on the machine table of the machine tool. The clamping devices can be equipped differently or identically, for example, with a workpiece clamping device on the top or with a coupling device for connecting a workpiece clamping device on the top.

[0029] In particular, the clamping system comprises several base bodies of the type described above, which can be attached to the machine table or workpiece carrier pallet in such a way that the longitudinal axes of the base bodies are aligned, thereby allowing the clamping device, or, if the clamping system comprises several clamping devices, the clamping devices to be movable over an extended distance along the common longitudinal axis. This allows the clamping system to be flexibly adapted to the size of the workpieces. Preferably, the cross-sections of the base bodies are at least substantially identical and preferably each has a first side contour on one lateral flank and a second side contour on the other lateral flank, as described above. The base bodies can be arranged and attached to the machine table or workpiece carrier pallet such that the lateral flanks of the base bodies are aligned. ten . In particular, the first and second side contours continue, preferably at least essentially seamlessly and / or without gaps, over the lateral flanks of the base bodies .

[0030] Further details of advantageous embodiments or specific aspects of the invention will become apparent from the drawings, the description, and the dependent claims. These show:

[0031] Figure 1 shows a schematic view of an example of the clamping system according to the invention in perspective view;

[0032] Figure 2 shows a schematic view of the basic body shown in Figure 1 without a clamping device;

[0033] Figure 3a shows an example of the clamping device in perspective view;

[0034] Figure 3b shows a side view of the example of the clamping device shown in Figure 3a;

[0035] Figure 4a shows another example of the clamping device in perspective view;

[0036] Figure 4b shows a side view of the example of the clamping device shown in Figure 3b;

[0037] Figure 5 shows a cross-sectional view of the basic body;

[0038] Figure 6 shows a side detail view of the basic body shown in Figure 2 and Figure 5, looking at the side flank;

[0039] Figure 7 shows a cross-sectional view of the clamping device, without the base body;

[0040] Figure 8 shows a side view of the clamping system;

[0041] Figure 9 shows a cross-sectional view along the Section plane CC;

[0042] Figure 10 shows a detailed view of the area circled in Figure 9 and designated by reference numeral Z;

[0043] Figure 11 shows a longitudinal section view along the section plane BB;

[0044] Figure 12 shows a detailed view of the basic clamping element; as well as

[0045] Figure 13 shows a longitudinal section view along the section plane AA.

[0046] Figure 1 shows a schematic perspective view of an embodiment of the clamping system 10 according to the invention, which comprises an elongated base body 11 and at least one clamping device 12. The clamping system 10 serves to clamp a workpiece to a machine table or a workpiece carrier plate 13 of a machine tool, which is particularly well-suited for machining the workpiece. The machine tool can be, for example, a CNC milling machine or a lathe.

[0047] The elongated base body 11 has a surface 15 on its upper surface 14, which is preferably at least substantially flat. The elongated base body 11 is can be permanently attached to the machine table in 13 different locations.

[0048] In the example shown in Figure 1, one mounting hole 16 is visible, while the other mounting holes 16 are hidden by the clamping device 12.

[0049] Figure 2 shows the base body 11 from Figure 1 without the clamping device 12, so that the additional mounting holes 16 are visible. The mounting holes 16 allow the elongated base body 11 to be securely fastened to the machine table 13. Several markings 24 are also equidistantly spaced on the surface 15 of the upper side 14 of the base body 11. The markings 24 shown in Figures 1 and 2 are indentations that are visually visible. Furthermore, the clamping device 12 can have spring-loaded pins in the receiving groove 35, which provide perceptible resistance when the clamping device 12 is moved as the pins are pushed over the indentations.

[0050] The elongated base body 11 defines a longitudinal axis L. The longitudinal axis L is defined such that it extends along the principal direction of the elongated base body 11.

[0051] The at least one clamping device 12 has a top surface 17 to which a workpiece clamping device 45 can be reversibly connected or is formed. The workpiece clamping device 45 is not shown in Figure 1.

[0052] In Figure 3a, the clamping device 12 is shown with a The workpiece clamping device 45 is shown attached to its upper surface 17. The workpiece clamping device 45 has two clamping jaws 46, with at least one of the clamping jaws 46 being movable towards and away from the other (along the transverse axis Q). In this example, the clamping jaws 46 are arranged such that they run parallel to the longitudinal axis L. Figure 4a shows a side view of the clamping system 10 shown in Figure 3a.

[0053] Figure 3b shows another example of the clamping device 12. In this example, the clamping device 12 and the workpiece clamping device 45 form a single unit. The workpiece clamping device 45 is formed on the top surface 17 of the clamping device 12. In this example as well, the workpiece clamping device 45 has two clamping jaws 46, with at least one of the clamping jaws 46 being movable towards and away from the other (along the transverse axis Q). The clamping jaws 46 are also arranged in this example such that they run parallel to the longitudinal axis L. Figure 4b shows a side view of the clamping system 10 shown in Figure 3b.

[0054] In Figure 1, the clamping device 12 has a receiving groove 35 formed on the underside 18, in which a section of the base body 11 is accommodated. The receiving groove 35 forms a recess for the base body 11 and is, for example, arranged centrally on the underside 18 of the clamping device 12. A base body clamping device 20 is accommodated in the receiving groove 35, which will be described in more detail later, particularly with reference to Figures 7 to 11.

[0055] The clamping device 12 is to be placed on the base body 11 in such a way that the base body 11 is received at least section by the receiving groove 35 and the clamping device 12 is guided by the base body 11 and movable along the longitudinal axis L.

[0056] The basic body 11 has two flanks 21 , 22 running parallel to each other laterally, whereby in Figure 1 only flank 21 is visible due to the perspective.

[0057] In the example shown in Figure 1, both lateral flanks 21, 22 of the base body 11 have an asymmetrical cross-section. A first side contour 23 is formed on one lateral flank 21, which can be positively connected to a corresponding clamping contour 32 of the base body clamping device 20. On the other lateral flank 22, a second side contour 25 is formed, which serves as an abutment for the base body clamping device 20 when clamping.

[0058] The lateral flanks 21, 22 of the base body 11, together with the flanks of the receiving groove 35, form a linear guide for the clamping device 12 in the direction of the longitudinal axis L. The base body 11 can be clamped by means of the base body clamping device 20 when, for example, it has been brought into the desired clamping position along the longitudinal axis L.

[0059] Figure 5 shows an example cross-sectional view of the base body 11. On the top side 14 of the basic body 11 has a flat surface 15 on .

[0060] The example shown in Figure 5 is an asymmetrically designed embodiment of the base body 11. The first side contour 23 is formed on one flank 21, and the second side contour 25 on the other flank 22. The first side contour 23 has a groove 26 with an adjoining inclined surface 27. The inclined surface 27 is arranged inclined about the longitudinal axis L relative to the surface 15. The inclined surface 27 is also provided with a toothing 28 having a plurality of teeth 29.

[0061] The second side contour 25 has a similarly inclined opposite surface 27', which is inclined about the longitudinal axis L relative to the surface 15. The second side contour 25 has no groove compared to the fastening contour 23. 26 on . The angles by which the inclined surfaces 27 and 27' are inclined can differ from each other .

[0062] Figure 6 shows a side detail view of the basic body 11 shown in Figures 2 to 5, looking at the side flank 21. The first side contour 23 has a toothing 28 with a plurality of teeth 29, which forms a grid R with a plurality of predefined clamping positions P along the longitudinal axis L. The teeth 29 of the toothing 28 are arranged equidistant from each other. Each of the teeth 29 has two (lateral) tooth surfaces 30. The tooth surfaces 30 are inclined about the longitudinal axis L relative to the surface 15 and are also arranged inclined towards each other.

[0063] Figure 7 shows a cross-sectional view of the clamping device 12 without the base body 11. The clamping device 12 has the receiving groove 18 on its underside. The clamping device 12 has a base body clamping device 20 with a base body clamping element 31, wherein the base body clamping element 31 is at least partially movable into the interior of the receiving groove 35. The base body clamping device 20 also has a clamping mechanism 36, which in the example shown in Figure 7 is implemented by a screw 36 that can be screwed in and out of a bore. The base body clamping element 31 is pin-shaped. In a tip region 37 of the base body clamping element 31, a clamping contour 32 with a, preferably inclined, clamping tooth 33 is formed. The clamping tooth 33 is adapted to the toothing 28 of the base body 11. The base body clamping element 31 also has a guide groove 39.A guide pin is arranged in the guide groove 39, forming a linear guide for the base clamping element 31 and preventing rotation of the base clamping element 31. This ensures that the clamping contour 32 always remains aligned with the first side contour 23, allowing the clamping teeth 33 to engage with the teeth 28.

[0064] On the opposite side of the base body clamping device 20 of the receiving groove 35, a counter surface 38, also preferably inclined, is formed against which the other flank 22 is pressed when the clamping device 12 is tightened on the base body 11.

[0065] Figure 7 also shows a section through a coupling device 40, with which a workpiece clamping device 45 (not shown) can be connected to the clamping device 12. The coupling device 40 is described in more detail below with reference to Figure 13.

[0066] Figure 8 shows an example of the clamping system 10 in a side view, in which the base body 11 is already fixed to the machine table or to the workpiece carrier pallet 13 of the machine tool. The clamping device 12 is placed on the base body 11 and can be moved along the arrows shown, i.e., along the longitudinal axis L.

[0067] Figure 9 shows a cross-sectional view along the section plane CC. Figure 11 shows a longitudinal section view along the section plane BB, and Figure 13 shows a longitudinal section view along the section plane AA.

[0068] Figure 9 shows a cross-sectional view of the clamping device 12 with the base body 11, excluding the receiving groove 35, in a clamped state. The base body clamping element 31 of the base body clamping device 20 is clamped against the first side contour 23 of the base body 11 such that the clamping teeth 33 are pressed against the inclined surface 27 of the base body 11. The clamping teeth 33 bear against the inclined surface 27. Due to the inclination of the clamping teeth 33 and the inclined surface 27, the base body clamping element 31 is pressed against the base body 11 like a wedge, thereby pressing the counter surface 38 on the opposite side of the receiving groove 35 against the inclined surface 27' of the base body 11 and the clamping device 12 downwards against the machine table or the workpiece carrier pallet 13.

[0069] Figure 10 shows a detailed view of the area circled in Figure 7 and designated by the reference sign Z.

[0070] Figure 11 shows a longitudinal view along the section plane BB in the clamped state. The clamping teeth 33 of the base body clamping element 31 are adapted to the teeth 28 of the base body 11. In Figure 11, the base body clamping element 31 has several teeth in the tip region 37 that engage positively with the teeth 28 of the base body 11.

[0071] Figure 12 shows a detailed view of the base clamping element 31 with the clamping contour 32. In the tip area 37 of the base clamping element 31, the clamping contour 32 with the clamping teeth 33 is formed by an inclined toothing. When the clamping device 12 is clamped to the base body 11, the toothing can be brought into engagement with the teeth 28 of the base body 11.

[0072] Figure 13 shows a longitudinal sectional view along the section plane AA. Figure 13 illustrates the coupling device 40, with which the workpiece clamping device 45 can be detachably attached to the top 17 of the clamping fixture 12. The coupling device 40 has several coupling bores 41 through which coupling bolts 46, attached to the underside of the workpiece clamping device 45, can be inserted from above. The coupling device 40 allows the coupling bolts 46 inserted into the coupling bores to be detachably clamped. For this purpose, the coupling device 40 has several coupling pins 42, which are movably mounted (along the transverse axis Q). The coupling pins 42 are mounted such that they can each be inserted laterally into the interiors of the coupling bores 41 by actuating the coupling device 40.

[0073] The coupling device 40 has at least one A transmission pin 43 is mounted on a screw 44, which can be moved deep into or out of the bore. The movement of the transmission pin 43 is transferred to the coupling pins 42, so that these can be moved into or out of the respective coupling bores 41 by screwing the screw 44 in or out. Two coupling pins 42 are always spring-mounted against each other by a spring element 47.

[0074] The clamping system 10 described above according to the invention works as follows:

[0075] To attach the clamping device 12 to the machine table 13, a base body 11 is first fixed to the machine table 13. The base body 11 defines a longitudinal axis L along which the clamping device 12 is displaceable. The clamping device 12 is placed onto the base body 11 such that at least a section of the base body 11 is accommodated in the receiving groove 35 of the clamping device 12. The clamping device 12 can now be moved into a desired clamping position P. When the clamping device 12 is in the desired clamping position P, it can be clamped using the base body clamping element 20. The base body clamping element 31 has a clamping contour 33 with a toothed section that is adapted to the inclined surface 27 with the toothed section 28 of the base body 11, so that these engage with each other during clamping.The inclined surface 27 is angled such that when the base clamping element 31 is tightened, a wedge effect is created, whereby the underside 18 of the clamping device 12 is clamped downwards against the top side of the machine table or the workpiece carrier pallet 13, and thus the. Clamping device 12 is detachably fixed to this.

[0076] The clamping system according to the invention for clamping a workpiece to a machine table or a workpiece carrier pallet 13 of a machine tool comprises at least one elongated base body 11 and at least one clamping device 12, wherein the clamping device 12 can be placed on the base body 11 so that the base body 11 can be received at least partially by the receiving groove 35 of the clamping device 12. The clamping device 12 is movably mounted along the longitudinal axis L defined by the base body 11 by means of the base body 11. Furthermore, the clamping device 12 can be clamped to the base body 11 and / or the machine table or the workpiece carrier pallet 13 by means of the base body clamping device 20. Reference symbol: 10 clamping system 11 Basic shapes 12 Clamping device 13 Machine table 14 Top side of the base body 15 first contact surface 16 mounting holes 17 Top side of the clamping device 18 Underside of the clamping device 19 second support surface 20 basic body clamping device 21 a (lateral) flank 22 another (lateral) flank 23 first side contour 24 markers 25 second side contour 26 Nut 27 inclined surfaces 27 inclined opposite surface 28 gear teeth 29th tooth of the gearing 30 tooth surface 31 basic body clamping elements 32 Clamping contour 33 Clamping teeth 34 Tension tooth 35 recordings 36 clamping mechanism 37 top range 38 Counter-tension surface 39 Guide groove 40 Koppe leinri ch tung 41 coupling bores 42 coupling pins 43 Transfer pen 44 screw 45 Workpiece clamping device 46 coupling bolts 47 Spring element L Longitudinal axis P clamping position R Grid Q transverse axis AA, BB section plane cc

Claims

Patent claims:

1. Clamping system (10) for clamping a workpiece to a machine table or to a workpiece carrier pallet (13) of a machine tool, which is designed in particular for machining the workpiece, comprising: - at least one elongated base body (11) which can be fixedly attached to the machine table or the workpiece carrier pallet (13), the base body (11) defining a longitudinal axis (L), and - at least one clamping device (12) with an upper side (17) on which a workpiece clamping device is or can be arranged, by means of which the workpiece can be clamped, and a lower side (18) on which a receiving groove (35) with a base body clamping device (20) is arranged, wherein the receiving groove (35) is designed to receive the base body (11) at least in sections, wherein the clamping device (12) is movable along the longitudinal axis (L) by means of the base body (11) and can be clamped to the base body (11) and / or the machine table or the workpiece carrier pallet (13) by means of the base body clamping device (20).

2. Clamping system (10) according to claim 1, characterized in that the base body (11) has two lateral flanks (21, 22) arranged parallel to one another, wherein at least one of the lateral flanks (21, 22) has a first side contour (23) with which a clamping contour (32) of the base body clamping device (20) can be positively and / or force-fitted can be connected.

3. Clamping system (10) according to claim 1 or 2, characterized in that a partial area of the receiving groove (35) is designed trapezoidally in cross section, wherein a corresponding partial area of the base body (11) is designed in cross section complementary to the trapezoidal partial area.

4. Clamping system (10) according to claim 2 or 3, characterized in that the first side contour (23) has at least one groove (26) with an inclined boundary surface (27) which is arranged inclined about the longitudinal axis (L) relative to the lateral flank (21).

5. Clamping system (10) according to one of claims 2 to 4, characterized in that the first side contour (23) has a toothing (28) with a plurality of teeth (29) which forms a grid (R) with a plurality of defined clamping positions (P) along the longitudinal axis (L).

6. Clamping system (10) according to claim 5, characterized in that the teeth (29) of the toothing (28) each have at least two tooth surfaces (30) which are inclined about the longitudinal axis (L) and about a transverse axis (Q) relative to the lateral flank (21).

7. Clamping system (10) according to one of the preceding claims, characterized in that the base body clamping device (20) has at least one base body clamping element (31).

8. Clamping system (10) according to claim 7, characterized in that the base body clamping element (31) is pin-shaped, wherein the clamping contour (25) of the base body clamping device (20) is formed in a tip region (37) of the base body clamping element (31).

9. Clamping system (10) according to claim 7 or 8, characterized in that the base body clamping element (31) further comprises a clamping toothing (33) with at least one clamping tooth (34) adapted to the shape of the toothings (28) which engages with the toothing (28) of the fastening contour (23) when the clamping device (12) is clamped.

10. Clamping system (10) according to one of the preceding claims, characterized in that the base body clamping device (20) has a clamping mechanism (36) which is designed to move the base body clamping element (31) transversely to the longitudinal axis (L).

11. Clamping system (10) according to one of claims 2 to 10, characterized in that both lateral flanks (21, 22) of the base body (11) are asymmetrical in cross-section.

12. Clamping system (10) according to one of claims 2 to 11, characterized in that the first side contour (23) is formed only on one of the flanks (21) and a second side contour (25) different from the first is formed on the other flank (22).

13. Clamping system (10) according to claim 12, characterized in that the receiving groove (35) on the side on which the second side contour (25) is arranged is designed to be complementary to the second side contour (25) of the base body (11).

14. Clamping system (10) according to one of the preceding claims, characterized in that markings are provided on an upper side (14) of the base body (11) which provide the user with visual or haptic feedback as to the clamping position (P) in which the clamping device (12) is currently located.

15. Clamping system (10) according to one of the preceding claims, characterized in that the clamping system (10) has a plurality of, preferably identical, clamping devices (12) which are movable along the longitudinal axis (L) by means of the base body (11) and can be clamped to the base body (11) and / or the machine table or the workpiece carrier pallet (13) by means of their base body clamping devices (20).

16. Clamping system (10) according to one of the preceding claims, characterized in that the clamping system (10) has a plurality of base bodies (11) which can be attached to the machine table or the workpiece carrier pallet (13) in such a way that the longitudinal axes (L) of the base bodies (11) are aligned.

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