Clamp device for clamping article

Abstract

To provide a clamp device for clamping an article.SOLUTION: The clamp device can clamp an article by adjusting a clamp diameter of a clamp body (27). A disc-like spring element (31) has a clearance energized in a radial direction and arranged at a center, and the clearance forms at least one conical body of the spring element. A clamp element (33) has at least one conical body of the clamp element inserted into the clearance of the spring element (31) to correspond to the conical body of the spring element. A conical surface of the conical body of the clamp element and a conical surface of the conical body of the spring element are moved relatively by actuating means (87), and the clamp element (33) can be displaced in a an axial direction (X) of a clamp disc in particular with respect to the spring element (31) so that the spring element (31) can be clamped and / or unclamped in a radial direction under the action of the conical surface.SELECTED DRAWING: Figure 2

Description

Field of the Art

[0001] The present invention relates to a clamping device for clamping an article according to the preamble of claim 1, a balance adapter for a balance device comprising the clamping device according to claim 20, a balance device comprising the balance adapter according to claim 21, and also a clamping device set according to claim 22.

Background Art

[0002] Balance devices are known which have a fixed or stationary base and can comprise an exchangeable balance adapter. In this case, the balance adapter is usually fixed to the drive spindle of the base, which can be a component of the drive means of the base for the rotational drive of the balance adapter and which has a balance adapter holder. The balance adapter fixed to the base can hold or clamp a workpiece to be balanced, such as a milling tool, a tool holder or a belt pulley. With the workpiece clamped, the balance device can balance it.

[0003] The differences between exchangeable balance adapters mainly lie in the clamping system for clamping the workpiece and the clamping dimensions or clamping diameters, which are different. Thus, a specific type of workpiece can be clamped by each balance adapter. For example, a milling tool and a tool holder are usually clamped by a balance adapter that enables clamping of the workpiece from the outside. On the other hand, a specific belt pulley or grinding disk having a centrally arranged cylindrical clearance is clamped by a balance adapter that enables clamping of the workpiece from the inside. Thus, the balance device can be adapted particularly easily to various workpieces to be clamped by means of the exchangeable balance adapter, so that the balance device is particularly flexible.

[0004] Furthermore, it is known that a clamping means having an adjustment mechanism may be equipped on the balance adapter, and by adjusting the clamp diameter using the adjustment mechanism, the clamp disc can be pressed against a workpiece placed on the placement surface, and thus the clamp diameter or the outer diameter of the clamp disc of the clamping means can be adjusted so that the workpiece can be clamped.

[0005] Patent Document 1 discloses a balance adapter for a balancing device, for example, which includes a radially biased clamping disc, the clamping diameter of which is adjustable by an adjustment means for clamping a workpiece placed on a mounting surface. In this case, the clamping disc is connected to a sleeve in a central region when viewed radially, the radial inner wall of the sleeve forming an inner cone. A rod-shaped actuating element passes through this sleeve, and the rod-shaped actuating element has an outer cone corresponding to the inner cone. According to a first exemplary embodiment of the balance adapter, the conical surface or cone is aligned such that the clamping disc is pushed outward radially by displacing the actuating element relative to the sleeve in the clamping direction. In this way, the workpiece can be clamped from the inside. On the other hand, in a second exemplary embodiment of the balance adapter, the conical surface is aligned such that the clamping disc is pulled inward radially by its own elasticity by displacing the actuating element relative to the sleeve in the clamping direction. As a result, the workpiece can be clamped from the outside.

[0006] Therefore, at least two balance adapters are required here to balance both the workpiece clamped from the outside and the workpiece clamped from the inside by the balancing device. In particular, replacing the balance adapters is relatively time-consuming in this case. Furthermore, assembling such balance adapters is also time-consuming due to the design of the conical components. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] International Publication No. 2013 / 029645A1 [Overview of the project] [Problems that the invention aims to solve]

[0008] The object of the present invention is to provide a clamping device for clamping articles that is easy to assemble, highly flexible, and can effectively clamp articles.

[0009] The above objectives are achieved by the features of the independent claims described in the claims. Preferred developments are disclosed in the dependent claims. [Means for solving the problem]

[0010] According to claim 1, a clamping device is proposed for clamping articles, particularly workpieces to be balanced, comprising clamping means for clamping articles, wherein the clamping means has an adjustment means, by which the clamping diameter of the clamping body of the clamping means is adjusted, particularly formed as a clamping disc, and by adjusting the clamping diameter, articles particularly placed on a placement surface can be clamped. According to the present invention, the clamping body has a disc-shaped spring element, which is particularly formed as a circular disc, is radially biased, has a clearance, the clearance is centrally located when viewed from the radial direction, and the clearance forms at least one spring element cone. Furthermore, the clamping body has a clamping element, which is inserted into the clearance of the spring element and has at least one clamping element cone corresponding to the spring element cone. Furthermore, the adjustment means includes an actuation means by which the conical surface of the clamp element cone and the conical surface of the spring element cone move relative to each other, and thus the clamp element is displaceable relative to the spring element, particularly in the axial direction of the clamp disc, so that the spring element is clamped and / or released radially by the clamp element, in particular by changing the clamp diameter of the clamp body and / or the outer diameter of the spring element under the action of the conical surface or cone.

[0011] In this way, the components of the clamping means having a cone now become components of the clamp body, making the clamping device particularly easy to assemble. As a result, the cone components can be pre-assembled independently of the other components of the clamping device and connected to the base of the clamping device in a pre-assembled state. This makes the assembly of the clamping device much easier. Furthermore, this also enhances the design possibilities for the other components of the clamping device, particularly the actuation means of the clamping device. Moreover, since the clamping force is applied directly outward radially or within the clamping plane by the conical surface of the disc-shaped spring element, articles can also be clamped particularly effectively by the clamping device according to the present invention. Thus, undesirable "bending" of the clamp body is effectively suppressed, and it becomes possible to improve the clamping of articles.

[0012] The term "clamp diameter" should be understood explicitly in a broad sense herein. This allows the clamping contour of the clamping body to be adapted almost freely to the contour of the article to be clamped. Therefore, the contour does not necessarily have to be circular or a part of a circle, but may be, for example, elliptical or polygonal. However, it is preferable that the clamping contour of the clamping body be circular. Similarly, here again, the article does not necessarily have to be clamped by surface engagement. Therefore, the article can also be fixed to the clamping body by, for example, line or point engagement. In this case, the article can also be clamped at only a few points, for example, by pins attached to the clamping body.

[0013] In a preferred design of the clamping device according to the present invention, the clamping elements and spring elements form an assembly unit or structural unit, particularly in the form of a disc. As a result, the assembly of the clamping device becomes much easier.

[0014] In this case, preferably, the assembly unit can be positioned at a plurality of rotational positions of the clamping device, the assembly unit can be positioned at a first rotational position in which the first main surface wall of the spring element is engaged with a predetermined engagement wall region, and the assembly unit can be positioned at a second rotational position in which the second main surface wall of the spring element is engaged with a predetermined engagement wall region. In this way, the cone-shaped component of the clamping body can be positioned in the clamping device at both the first rotational position and the second rotational position rotated 180°.

[0015] Preferably, the actuation means has an actuation element in particular in the form of a rod and / or a cylinder, the actuation element being displaceable between a start position and an end position, and when there is displacement between the start position and the end position, the actuation element may also displace the clamping element, and thus the clamping element may be connected to the clamping element of the clamping body so that the clamping element is displaced relative to the spring element. Such an actuation element allows the clamping element to be easily displaced relative to the spring element. The rod-shaped or cylindrical actuation element can achieve effective weight reduction in this case, in particular compared to a conical actuation element. For a functionally reliable structure, it is also preferable that the rod-shaped actuation element be linearly displaceable within a cylindrical clearance of at least one housing body, particularly via at least one ball guide.

[0016] Particularly preferable, when the assembly unit is positioned in a second rotational position, the spring element is pushed radially outward or downward in the clamping direction by the clamping element under the action of a conical surface or cone, due to the displacement of the actuating element connected to the clamping element from its end position to its start position. On the other hand, when the assembly unit is positioned in a first rotational position, the spring element is pulled radially inward by the clamping element under the action of a conical surface or cone, due to the displacement of the actuating element connected to the clamping element from its end position to its start position. In this way, when the structural unit is positioned in a first rotational position, the article can be clamped from the inside by the spring element and the clamping element. Furthermore, when the structural unit is positioned in a second rotational position, the article can also be clamped from the outside by the spring element and the clamping element. Thus, the clamping device can be easily and effectively adapted to various articles to be clamped, and for this reason, the clamping device is particularly flexible. In particular, in this case, there is no need to replace the entire clamping device.

[0017] Preferably, the rod-shaped actuating element and the clamping element may be connectable to each other in a manner that prevents improper rotation and / or allows for release. In this case, preferably, the end region of the rod-shaped actuating element has a non-circular and / or polygonal cross-section that can be positioned so as to conform to the contour of at least one corresponding clearance of the clamping element. By connecting the clamping element and the actuating element in this manner to prevent improper rotation, the article can be reliably clamped in a predetermined manner with high repeatability.

[0018] In this case, preferably, the clamping element has two identical clearances corresponding to the end regions of the clamping element, which are located on opposite sides in the axial direction. This allows the clamping element to be easily connected to the actuating element to prevent improper rotation of the structural unit in both the first and second rotational positions. Preferably, the two clearances of the clamping element are also spaced apart from each other in the axial direction.

[0019] In a preferred design, at least one cone of the clamping element and / or at least one cone of the spring element have a cone angle in the range of 1° to 20°, particularly in the range of 1° to 10°. Such a cone angle allows the spring element to be functionally and reliably clamped and unclamped radially. In this case, the cone angle represents the angle between the cone surface of each cone and the central longitudinal axis or the axis of rotation of the clamping disk.

[0020] Preferably, the clamp element and the spring element are connected to each other, particularly releasably, by rear gripping connections and / or surface engagement connections, in order to achieve a functionally optimized connection between the clamp element and the spring element. Preferably, when the assembly unit is not assembled, the spring element is pre-inserted radially, in this case by inserting the clamp element into the central clearance.

[0021] In a preferred particular design, the clamping element has a central region, particularly a cylindrical or conical region, and a plurality, particularly three, guide rails projecting outward from the central region, particularly radially, each guide rail positioned with its contour adapted to the corresponding rail holder of the spring element in the form of a rear gripping engagement. This allows the clamping element to be easily connected to the spring element in a displaceable manner relative to the spring element. In this case, preferably, each guide rail is formed with a T-shaped cross-section to achieve a particularly effective structure. Preferably, the guide rails can be arranged uniformly distributed around the central region when viewed circumferentially. Naturally, the guide rails and rail holders can also be arranged in reverse, so that the guide rails can be attached to the spring element, projecting radially inward, and engaging with the corresponding rail holder located outside the clamping element.

[0022] Preferably, each guide rail, having a T-shaped cross-section, is connected to the central region of the clamping element by its T-shaped base, and the wall region of the T-shaped top of the guide rail facing away from the central region of the clamping element is surface-engaged or can surface-engaged with the wall region of the spring element that forms the outer cone and inner cone of the clamping element. Furthermore, the wall region of the T-shaped top of the guide rail facing the central region of the clamping element is surface-engaged or can surface-engaged with the wall region of the spring element that forms the inner cone and outer cone of the clamping element. Due to such conical shapes of the clamping element and spring element, the spring element can be effectively pushed radially outward and pulled radially inward by the clamping element.

[0023] Preferably, to achieve an effective structure, the T-shaped top of the guide rail may be formed in the shape of a rectangular parallelepiped and / or a block. Preferably, to facilitate the manufacture of the clamping element, the conical surfaces of the guide rail forming the outer and inner cones are formed as flat planes. However, alternatively, the conical surfaces of the guide rail may also be curved in an arc shape.

[0024] In a preferred particular design, a disc-shaped spring element has multiple spring portions uniformly distributed in the circumferential direction, and the spring element can be radially biased by the multiple spring portions, and when viewed in the circumferential direction, the disc portions of the spring element arranged between the spring portions are connected to each other via the spring portions. This makes it possible to easily form the spring element to be radially biased.

[0025] For effective biasing, the spring portion may be formed by a thin web of the spring element having substantially a corrugated and / or meandering and / or arched and / or V-shaped profile when viewed in a plan view of the spring element.

[0026] Particularly preferably, the clamping body has a disk-shaped adapter element that biases in the radial direction, and is thus formed as a clamping disk. The adapter element has a clearance, and the clearance is arranged centrally especially when viewed in the radial direction. The spring element of the clamping disk is inserted into the clearance, and the adapter element has at least one clamping surface for clamping the workpiece to be balanced. With such an adapter element, the clamping disk can be easily adapted to the article to be clamped or the clamping contour of the article to be clamped.

[0027] Preferably, the adapter element and the spring element are releasably connected to each other by a rear gripping connection and / or a surface engagement connection.

[0028] In a specific design, the adapter element may have a plurality of, especially three webs that project into the clearance. Each projecting web is placed in the corresponding web holder of the spring element while forming a rear gripping engagement and being adapted to the contour. Thereby, the adapter element can be easily connected to the spring element. Preferably, in this case, each web forms a T-shaped cross-section. Also preferably, when viewed in the circumferential direction of the clamping disk, the webs are evenly distributed. Of course, since the clearance and the webs can be arranged conversely, the webs can be attached to the spring element, project radially outward, and engage with the corresponding clearance inside the adapter element.

[0029] In a specific design, the disk-shaped adapter element may have a plurality of spring portions that are evenly distributed in the circumferential direction. With the plurality of spring portions, the adapter element can bias in the radial direction. When viewed in the circumferential direction, the disk portions of the adapter element arranged between the spring portions are connected to each other by the spring portions. Preferably, in this case, the spring portions are formed by thin webs of the adapter element that have a substantially wave-shaped and / or serpentine-shaped and / or arcuate-shaped and / or V-shaped profile when viewed in the plan view of the adapter element.

[0030] Preferably, the adapter element has an arrangement surface for the balance adapter for arranging the workpiece to be balanced. The adapter element may also have a clamp base, particularly a cylindrical clamp base, which protrudes from the arrangement surface axially from the clamp disc and is configured inward from the arrangement surface, particularly radially, so that the wall region of the clamp base facing the arrangement surface forms a clamp surface for clamping the article. Such an adapter element allows the article to be easily clamped from the inside. However, as a rule, the arrangement surface may also be formed by the region of the clamping device arranged outside the clamp disc.

[0031] Alternatively, the adapter element may also have multiple clamping webs, particularly thin-walled clamping webs, which project from the placement surface axially to the clamping disc, and particularly radially, are configured outside the placement surface, with the wall region of the thin-walled clamping webs facing the placement surface forming a clamping surface for clamping the workpiece. Such an adapter element allows the article to be clamped from the outside. Preferably, in this case, the clamping webs have an arc-shaped profile when viewed in a plan view of the adapter element.

[0032] In a further alternative design, the clamp body may also have a plurality of adapter elements in the form of blocks and / or cubes connected to a spring element, each adapter element having at least one clamping surface for clamping an article. Preferably, in this case, each adapter element in the form of a block is connected to the spring element by rear gripping connections and / or engaging connections, particularly surface engaging connections. Furthermore, each adapter element in the form of a block may have an arrangement surface for positioning the article to be clamped. However, alternatively, the arrangement surface may also be formed by an area of ​​clamping device located outside the clamp body.

[0033] Preferably, fixing means are provided, and the clamp body is fixed to the base of the clamping device by the fixing means.

[0034] In a preferred particular design, the fastening means has a fastening element with a clamping ring, which is engaged with, or may be engaged with, at least one wall region of the spring element and / or adapter element facing away from the base, and the fastening element has a plurality of engaging webs, particularly cylindrical engaging webs, which protrude particularly axially from the clamping ring and engage with the corresponding clearances of the spring element and / or adapter element. Preferably, in this case, the fastening element may be connected to the base by a removable screw connection.

[0035] Preferably, the actuation means includes at least a portion of a drive means or actuator for the displacement of the clamping element relative to the spring element, particularly for linear displacement. The drive means may be, for example, a pneumatic, hydraulic, or electromechanical drive. The electromechanical drive may be, for example, an electric motor. Preferably, the drive means includes a path control piston or path control spindle for the linear displacement of the clamping element, particularly for linear displacement in both linear directions.

[0036] Furthermore, in order to achieve the above objectives, a balance adapter for a balancing device equipped with a clamping device according to the present invention is claimed.

[0037] Furthermore, a balancing device equipped with a balance adapter according to the present invention is also claimed.

[0038] The advantages obtained by the balance adapter and the balance device according to the present invention are the same as the advantages already recognized with respect to the balance adapter according to the present invention, and therefore, the above advantages will not be repeated at this time.

[0039] Preferably, the balancing device may have a base equipped with a balance adapter holder for holding the balance adapter. Preferably, the base has at least part of a rotational drive means for rotational driving of the held balance adapter and / or a drive means for displacement of the clamp element relative to a spring element, particularly for linear displacement.

[0040] As an alternative to a balance adapter, the clamping device according to the present invention may also be provided for a gripping device, such as a robotic gripper or robotic arm. The clamping device allows for easy and effective gripping or holding of an article.

[0041] Furthermore, a clamping device set is also claimed, comprising a base, a spring element, a clamping element, and a plurality of adapter elements, wherein the spring element, the clamping element, and at least one adapter element are connected to form a clamping body, and the clamping body can be fixed to the base by fixing means. The spring element is formed as a disk, is radially biased, and has a clearance, the clearance is centrally located when viewed radially, and the clearance forms at least one spring element cone, the clamping element can be inserted into the clearance of the spring element and has at least one clamping element cone corresponding to the spring element cone, each adapter element can be connected to the spring element, each adapter element has at least one clamping surface for clamping a workpiece to be balanced, and at least some of the adapter elements differ in at least the arrangement and / or design of the at least one clamping surface.

[0042] The clamping device set according to the present invention realizes a modular structure, and this modular structure allows the clamping device to be easily adapted to various articles to be clamped.

[0043] The description of the advantageous design of the present invention, presented herein, includes numerous features that may be reproduced in individual dependent claims, and possibly together. However, these features may also be preferably considered individually and combined in appropriate further combinations. In particular, these features may be combined individually and in any appropriate combination with the methods according to the present invention.

[0044] In the description and / or claims, some terms are used either singular or in combination with numbers in each case, but the scope of the invention is not limited to the singular or the respective numbers in these terms. Furthermore, the words "a" or "an" should be understood as indefinite articles, not numbers.

[0045] The characteristics, features, and advantages of the present invention described above, as well as how they are implemented, will be clearer and easier to understand when combined with the following description of exemplary embodiments of the invention, which will be explained in more detail in conjunction with the drawings / figures (identical components and functions are given the same reference numerals in the drawings / figures).

[0046] The exemplary embodiments are used to illustrate the present invention and do not limit the invention to any combination of features specified herein, including functional features. Furthermore, for this purpose, appropriate features of each exemplary embodiment may be taken individually and explicitly considered, taken from one exemplary embodiment, introduced into another exemplary embodiment to supplement it, and combined with any one of the claims. [Brief explanation of the drawing]

[0047] [Figure 1] A first exemplary embodiment of a balance adapter equipped with a clamping device according to the present invention is shown in a perspective view. [Figure 2] A cross-sectional view along section AA of Figure 1 is shown. [Figure 3] The spring element of the balance adapter is shown in a perspective view. [Figure 4] A plan view of the spring element is shown. [Figure 5] The clamping element is shown in a perspective view. [Figure 6] A plan view of the clamping element is shown. [Figure 7] The adapter elements of the balance adapter are shown in a perspective view. [Figure 8] A plan view of the adapter element is shown. [Figure 9] A second exemplary embodiment of a balance adapter equipped with a clamping device according to the present invention is shown in Figure 2. [Figure 10] The adapter elements of the balance adapter are shown in a perspective view. [Figure 11] A plan view of the adapter element is shown. [Figure 12] A third exemplary embodiment of a balance adapter equipped with a clamping device according to the present invention is shown in a perspective view. [Figure 13] A top view of a portion of the balance adapter is shown. [Figure 14] The adapter elements of the balance adapter are shown in a perspective view. [Figure 15] A fourth exemplary embodiment of a balance adapter equipped with a clamping device according to the present invention is shown in a perspective view. [Figure 16] The adapter elements of the balance adapter are shown in a perspective view. [Figure 17] A fifth exemplary embodiment of a balance adapter equipped with a clamping device according to the present invention is shown in a perspective view. [Figure 18] Figure 17 shows a cross-sectional view along the cross-section BB. [Modes for carrying out the invention]

[0048] Figure 1 shows a first exemplary embodiment of a balance adapter 1 equipped with a clamping device according to the present invention. The balance adapter 1 has a fixing area 3, which allows the balance adapter 1 to be fixed to a fixed base 5 shown by a dashed line in Figure 2. Together with the base 5, the balance adapter 1 forms a balance device 7, and the workpiece can be balanced by the balance device 7.

[0049] The base 5, also shown here by a dashed line, has a drive spindle 9 with a balance adapter holder 11, on which the balance adapter 1 can be positioned along with its fixed area 3. The drive spindle 9 is a component of the drive means (not shown further here) of the base 5 for rotational driving of the balance adapter 1. Furthermore, in the representation shown in Figure 2, the workpiece 13 to be balanced is clamped to the balance adapter 1.

[0050] As can be seen further in Figure 2, the balance adapter 1 has an adapter base 15, the adapter base 15 having a fixed region 3. The adapter base 15 has a substantially rotationally symmetric first housing 17, the first housing 17 is connected by screw connections 19 to a similarly substantially rotationally symmetric second housing 21 of the adapter base 15, the second housing 21 is positioned below the housing 17 or on the side of the housing 17 facing the mounting surface of the base 5. Furthermore, the housing 17 is connected in an upper region to a disk 23, the disk 23 protruding outward from the housing 17 and forming a flat support 136 of the adapter base 15.

[0051] Furthermore, the balance adapter 1 also has clamping means 25 for clamping the workpiece to be balanced. The clamping means 25 has a clamping body 27, which is formed as a clamping disc, and the clamping diameter d (Figure 8) of the clamping body 27 can be adjusted to allow a workpiece to be clamped onto the placement surface 29 (Figure 8) of the clamping disc 27. The clamping disc 27 here consists of three parts: a spring element 31, a clamping element 33, and an adapter element 35.

[0052] According to Figures 3 and 4, the spring element 31 is formed as a disk. Furthermore, the spring element 31 has multiple spring portions 39, in this example three, uniformly distributed in the circumferential direction U, and the spring portions 39 can bias the spring element 31 in the radial direction r. Specifically, here the spring portions 39 are formed by the thin web 41 of the spring element 31, and the thin web 41 has a substantially V-shaped profile in the plan view of the spring element 31 shown in Figure 4. The disk portions 43 of the spring element 31, when viewed in the circumferential direction U, are connected to each other by the spring portions 39 or the web 41, between the webs 41. As a result, the spring element 31 has a predetermined spring characteristic in the radial direction r. Furthermore, when viewed in the radial direction r, the spring element 31 has a clearance 37 in the central region into which a clamping element 33 can be inserted.

[0053] As can be seen from Figures 5 and 6, the clamp element 33 has a central region 45, which is cylindrical in this example, and a plurality of guide rails 47, which project outward from the cylindrical region 45, in this example being three. Here, each guide rail 47 has a T-shaped cross-section, for example. These guide rails 47 allow the clamp element 33 to be connected to the spring element 31. Here, the guide rails 47 are uniformly distributed around the central region 45 when viewed in the circumferential direction U.

[0054] According to Figures 5 and 6, each guide rail 47, which has a T-shaped cross-section, is connected to the central region 45 of the clamp element 33 by a T-shaped base 51 or the free end of the T-shaped base 51. In this case, the T-shaped base 51 protrudes radially r from the cylindrical central region 45 of the clamp element 33. The T-shaped top 55 of the guide rail 47 is also formed as a rectangular parallelepiped, at a distance from the central region 45 of the clamp element 33.

[0055] When the clamp element 33 and the spring element 31 are connected, the guide rail 47 adapts its contour to the corresponding rail holder 49 of the spring element 31 and engages in the form of a rear gripping engagement. Here, the guide rail 47 and the rail holder 49 are formed such that, in this case, the clamp element 33 can be displaced relative to the spring element 31 in the axial or longitudinal axis x of the clamp disc. When viewed in the circumferential direction U, the wall region of the clamp element 33 between the guide rails 47 is also at a distance from the spring element 31.

[0056] Furthermore, the wall region 53 of the T-shaped apex 55 of the guide rail 47, which faces away from the central region 45 of the clamp element 33, forms the outer cone of the clamp element 33. In this case, the wall region 53 can surface engage with the wall region 57 of the spring element 31, which forms the inner cone. Furthermore, the wall region 59 of the T-shaped apex 55 of the guide rail 47, which faces the central region 45 of the clamp element 33, forms the inner cone of the clamp element 33. These wall regions 59 can surface engage with the wall region 61 of the spring element 31, which forms the outer cone. Here, the cone of the clamp element 33 and the cone of the spring element 31 have a cone angle α (Figure 2) between the cone surface and the longitudinal axis x, which is in the range of 1° to 20°.

[0057] With this design of the guide rail 47 and rail holder 49, if there is a displacement of the clamp element 33 relative to the spring element 31 in the first axial direction, the spring element 31 is pushed or spread radially r by the clamp element 33, and therefore the diameter of the spring element 31 increases. On the other hand, if the displacement of the clamp element 33 relative to the spring element 31 is in the opposite direction, the second axial direction, the spring element 31 is pulled radially r by the clamp element 33, and therefore the diameter of the spring element 31 decreases.

[0058] Furthermore, here, the conical surfaces of the guide rail 47 and the rail holder 49 are formed as flat surfaces. Alternatively, the conical surface at the top of the T-shape can be formed by curving it into an arc shape. Furthermore, here, each rail holder 49 of the spring element 31 has two wall regions 57, which are spaced apart from each other when viewed in the circumferential direction U, and the two wall regions 57 engage the spring element 31 with the wall region 53 of each guide rail 47. Between these spaced-apart wall regions 57 when viewed in the circumferential direction U, each rail holder 49 has a recess 63 that is radially outward. As a result, the displacement of the clamp element 33 relative to the spring element 31 is facilitated.

[0059] The spring element 31 and the clamp element 33 form an assembly unit 65. This assembly unit 65 is releasably connected to the adapter element 35 to form a clamp disc 27.

[0060] As shown in Figures 7 and 8, the adapter element 35 is similarly formed as a disk. Furthermore, the adapter element 35 has multiple spring portions 67 uniformly distributed in the circumferential direction U, and the spring portions 67 can bias the adapter element 35 in the radial direction r. Specifically, here the spring portions 67 are formed by the thin web 69 of the adapter element 35, and the thin web 69 has a substantially V-shaped profile in the plan view of the adapter element 35 shown in Figure 8. When viewed in the circumferential direction U, the disk portions 71 of the adapter element 35 arranged between the webs 69 are connected to each other by the spring portions 67 or the webs 69. Therefore, as a result of the webs 69, the adapter element 35 has a predetermined spring characteristic in the radial direction r.

[0061] Furthermore, the adapter element 35 also has a central clearance 73 when viewed in the radial direction r, into which the spring element 31 or assembly unit 65 can be inserted. Because the adapter element 35 is releasably connected to the spring element 31, the adapter element 35 has multiple, in this example, three webs 75 that engage with the clearance 73. Here, each engaging web 75 has, for example, a T-shaped cross-section. Furthermore, when viewed in the circumferential direction U, the webs 75 are uniformly distributed.

[0062] With the adapter element 35 and the spring element 31 connected, the web 75 is positioned in the form of a rear gripping engagement, adapting its contour to the corresponding web holder 77 of the spring element 31. In this case, both the web 75 and the wall region 79 of the adapter element 35, which are located between the webs 75 and externally demarcate the clearance 73 when viewed in the circumferential direction U, can surface engage with the spring element 31, which is inserted into the clearance 73.

[0063] As can be seen in Figures 7 and 8, the adapter element 35 has an arrangement surface 29 for the balance adapter 1 for positioning the workpiece to be balanced. Furthermore, the adapter element 35 also has a plurality of thin-walled clamp webs 81, which project axially x from the arrangement surface 29 and are arranged radially outside the arrangement surface 29. The wall regions 83 or radially inward wall regions of the clamp webs 81 facing the arrangement surface 29 form a clamp surface for clamping the workpiece to be balanced, and thus also form the clamp diameter d of the clamp disc 27. The clamp webs 81 have an arc-shaped profile, as seen in the plan view of the adapter element 35 shown in Figure 8. Furthermore, the clamp webs 81 are spaced apart from each other in the circumferential direction, with each disc portion 71 being assigned a clamp web 81.

[0064] The adapter element 35 allows the workpiece to be balanced to be clamped from the outside. For this purpose, when the clamp disc 27 is assembled, if there is a displacement of the clamp element 33 relative to the spring element 31 in the first axial direction, the adapter element 35 and the spring element 31 are pulled radially r, and therefore the clamp diameter d is reduced. To release the clamped workpiece, the clamp element 33 is displaced in the second axial direction opposite to the spring element 31. Therefore, the clamp element 33 pushes the spring element 31 and the adapter element 35 radially r apart, resulting in an increased clamp diameter d.

[0065] Furthermore, similarly, the clamping element 33 of the clamping disc 27 may be releasably connected to a rod-shaped actuating element 85 (Figure 2) of the actuating means 87 of the balance adapter 1, here in particular, to prevent improper rotation by screw connection. For this purpose, the end region 89 of the rod-shaped actuating element 85 has a non-circular, polygonal cross-section, here in particular, and this cross-section allows the actuating element to be positioned with a contour adapted to two identical clearances 91, 93 (Figure 5) in the central region 45 of the clamping element 33. The clearances 91, 93 are located on both sides of the central region 45 when viewed in the axial x of the clamping disc, and are spaced apart from each other in the axial x. Between the clearances 91, 93 when viewed in the axial x, the central region 45 also has an annular shoulder 95, the annular shoulder 95 protruding radially inward and having a female thread. The screw 97 can pass through the clearances 91, 93 and the narrow region between them and be screwed into the screw hole on the end face of the rod-shaped actuating element 85.

[0066] Therefore, in order to connect the clamp element 33 to the actuating element 85, the actuating element 85 is first inserted into one of the clearances 91, 93 by the end region 89. Subsequently, the screw 97 is screwed into the screw hole, passing through the opposite clearances 91, 93 and the narrow region, until the screw head strikes the annular shoulder 95.

[0067] The female threads on the annular shoulder portion 95 allow a screw to be screwed in there, which in turn pushes the clamping element 33 away from the operating element 85, thus facilitating the disconnection between the clamping element 33 and the operating element 85.

[0068] This design of the clamp element 33 with two clearances 91 and 93 allows the assembly unit 65 to be positioned in two rotational positions of the balance adapter 1. Thus, as shown in Figure 2, the assembly unit 65 can be positioned in a first rotational position, in which the first main surface wall 101 (Figure 3) of the spring element 31 engages with a predetermined engagement wall region 103 (Figure 2) of the adapter base 15 of the balance adapter 1. Furthermore, the assembly unit 65 can also be positioned in a second rotational position, in which the second main surface wall 105 (Figure 3) of the spring element 31 engages with a predetermined engagement wall region 103. In each of these rotational positions, the assembly unit 65 can be connected or coupled to the actuating element 85 by the clamp element 33.

[0069] As further shown in Figure 2, the clamp disc 27 can also be fixed to the adapter base 15 of the balance adapter 1 by a fixing means 107 (Figure 2). The fixing means 107 has a fixing element 109 with a clamp ring 111, which, when the balance adapter 1 is assembled, surface engages with or forms a narrow gap with the wall region 112 (Figure 8) of the adapter element 35 facing away from the adapter base 15. Furthermore, the fixing element 109 has a plurality of cylindrical engaging webs 113 (Figure 2), three in this example, which protrude axially from the clamp ring 111 and engage with the corresponding clearance 114 (Figure 8) of the adapter element 35. The engaging webs 113 also allow the fixing element 109 to be releasably connected to the adapter base 15. In this case, a screw 115 passes through each engaging web 113 and is screwed into the corresponding screw hole of the first housing body 17.

[0070] As can be further seen from Figure 2, the rod-shaped actuation element 85 is guided to be linearly displaceable within the cylindrical clearances 117 and 119 of the first and second housings 17 and 21, with a ball guide, particularly a ball cage, interposed therein. In this case, the actuation element 85 has a first cylindrical portion, which guides the actuation element to the first housing 17. Furthermore, the actuation element 85 also has a second cylindrical portion having a reduced cross-section, which guides the actuation element to the second housing 21. The ball guide enables the linearly displaceable centering of the actuation element 85 and clamp disc 27 with respect to the cylindrical clearances 117 and 119, and consequently to the housings 17 and 21.

[0071] Furthermore, here, the rod-shaped actuation element 85 is connected by an end region 121 to a piston 123 of an adapter base 15 located below the second housing body 21, in order to prevent improper rotation. The piston 123 is part of the cylindrical-piston unit of the balance device 7, is actuated by compressed air, and forms a driving means or actuator for the linear displacement of the actuation element 85, and is therefore also part of the clamping element 33 of the balance adapter 1 coupled to it. Further components of this driving means are the components of the base 5 of the balance device 7. Also here, a compression spring 99 is positioned between the piston 123 and the housing body 21, and the compression spring 99 provides an axial preload to the piston 123 downward so as to move away from the housing body 21.

[0072] Specifically, the actuating element 85 is connected to the piston 123 by a screw connection, the screw 134 passing through a clearance continuous in the axial direction of the piston 123 and screwing into a screw hole at the end face of the actuating element 85. The end region 121 of the actuating element 85 also has a circumferential clearance, in which the cylindrical pin 135 of the piston 123 engages with the circumferential clearance, adapting to its contour, thus preventing improper rotation of the actuating element 85 relative to the piston 123.

[0073] Furthermore, the rod-shaped actuation element 85 can be linearly displaced by the piston 123 between the start position and the end position. In Figure 2, in this case, the actuation element 85 is positioned at the clamp position between the start position and the end position. At the end position, the actuation element 85 is displaced upward compared to the start position. When the balance adapter 1 is assembled, the displacement of the actuation element 85 also displaces the clamp element 33 of the clamp disc 27 connected to the actuation element 85, and therefore the clamp element 33 is displaced relative to the spring element 31.

[0074] In the arrangement of the assembly unit 65 shown in Figure 2, the main surface wall 101 of the spring element 31 engages with the adapter base 15, and the spring element 31 is pushed radially outward under the action of a conical surface as the actuating element 85 connected to the clamp element 33 is displaced upward from the starting position to the ending position. The adapter element 35 connected to the spring element 31 is also pushed outward by the clamp web 81. In this case, the spring element 31, which is inserted radially r, and the adapter element 35, which is similarly inserted radially r, are relaxed. Therefore, with such displacement of the actuating element 85, the clamp diameter d increases, and the clamped workpiece can be released. On the other hand, the spring element 31 is pulled radially inward as the actuating element 85 is displaced downward in the opposite direction from the ending position to the starting position. The adapter element 35 connected to the spring element 31 is also pulled inward by the clamp web 81. In this case, the spring element 31 and the adapter element 35 are inserted radially. As a result, when there is such displacement of the actuating element 85, the clamp diameter d may become smaller, and the workpiece may be clamped from the outside.

[0075] Next, we will describe the assembly of the balance adapter 1 in more detail. First, the assembly unit 65, which consists of a spring element 31 and a clamp element 33, is connected in this case to the rod-shaped actuation element 85 of the adapter base 15. Subsequently, the adapter element 35 having the clamp web 81 is connected to the assembly unit 65 to form the clamp disc 27. Finally, the clamp disc 27 is also fastened to the adapter base 15 of the balance adapter 1 by the fastening means 107.

[0076] Figures 9 to 11 show a second embodiment of a balance adapter 125 equipped with a clamping device according to the present invention. Compared with the embodiments shown in Figures 1 to 8, here the balance adapter 125 has an adapter element 127 instead of an adapter element 35. Compared with the adapter element 35, the adapter element 127 does not have a clamp web 81. Instead, the adapter element 127 has a cylindrical clamp base 131, which protrudes axially x from the placement surface 129 of the adapter element 127, is positioned radially inward of the placement surface 129, and faces the placement surface 129. The wall region 133 of the clamp base 131 forms a clamping surface for clamping the workpiece to be balanced. Thus, the workpiece can be clamped from the inside by the adapter element 127.

[0077] Furthermore, in the assembled state of the balance adapter 125 shown in Figure 9, the assembly unit is positioned at a 180° rotation, and thus the spring element 31 engages with the engagement wall region 103 of the adapter base 15 by the main surface wall 105. Thus, the spring element 31 is pulled radially inward under the action of the conical surface by the upward displacement of the actuating element 85, which is connected to the clamping element 33, as shown in Figure 9, from the start position to the end position. The adapter element 127 connected to the spring element 31 is also pulled inward by the spring element 31. In this case, the spring element 31, which is inserted radially r, and the adapter element 35, which is similarly inserted radially r, are relaxed. Thus, here again, with such displacement of the actuating element 85, the clamp diameter d becomes smaller, and the clamped workpiece can be released.

[0078] On the other hand, as the actuating element 85 is displaced downward in the opposite direction from the end position toward the start position, the spring element 31 is pushed radially outward under the action of the conical surface. The adapter element 127 connected to the spring element 31 is also pushed outward by the clamp base 131. In this case, the spring element 31 and the adapter element 35 are inserted radially r. As a result, when there is such displacement of the actuating element 85, the clamp diameter d may increase, and the workpiece is clamped from the inside.

[0079] Figures 12 to 14 show a third embodiment of a balance adapter 137 equipped with a clamping device according to the present invention. Compared with the first embodiment shown in Figures 1 to 8, the balance adapter 137 has a clamping body 138. The clamping body 138 has multiple, in this example, block-shaped adapter elements 139, rather than a disc-shaped adapter element 35. Each adapter element 139 is connected to a spring element 31 of the clamping body 138 and has a clamping surface 141 for clamping a workpiece. In this case, the adapter elements 139 are evenly distributed around the disc-shaped spring element 31.

[0080] To connect each adapter element 139 to the spring element 31, each adapter element 139 has a protruding web 143 (Figure 14), the web 143 having a T-shaped cross-section, for example. When each adapter element 139 is connected to the spring element 31, the web 143 is positioned in the form of a rear gripping engagement, with its contour adapted to one of the web holders 77 of the spring element 31. In this case, both the web 143 and wall region 144 of each adapter element 139 that is laterally adjacent to the web 143 and facing the spring element 31 can surface engage with the spring element 31. The lateral wall region 144 is formed in this case with its contour adapted to the corresponding outer wall region of the spring element 31.

[0081] As can be seen further in Figure 12, the housing 17 is connected in the upper region to the disk 145 of the balance adapter 137, which protrudes outward from the housing 17. Here, the disk 145 forms the placement surface 147 of the balance adapter 137 for the placement of the workpiece to be balanced. Furthermore, the adapter element 139 is also placed on the disk 145.

[0082] As shown in Figure 14, each adapter element 139 also has a protruding guide rail 149, which in this example has a T-shaped cross-section. These guide rails 149 allow the adapter element 139 to engage with the corresponding rail holder or retaining groove 151 of the disc body 145 in the form of a rear gripping engagement adapted to the contour. Here, the guide rails 149 and rail holders 151 are formed so that the adapter element 139 is radially displaceable relative to the disc body 145.

[0083] The adapter element 139 allows the workpiece to be balanced to be clamped from the inside. For this purpose, when the clamp body 138 is assembled, if there is a displacement of the clamp element 33 relative to the spring element 31 in the first axial direction, the spring element 31 is pushed outward in the radial direction r, and thus the outer diameter of the spring element 31 increases. Next, the spring element 31 pushes or moves the adapter element 139 outward away from the central clamp element 33, and the clamp diameter of the clamp body 138 increases. To release the clamped workpiece, the clamp element 33 is displaced in the second axial direction opposite to the spring element 31. As a result, the spring element 31 is pulled radially r by the clamp element 33, and thus the outer diameter of the spring element 31 decreases. Next, the spring element 31 pulls or moves the adapter element 139 inward toward the central clamp element 33, and the clamp diameter of the clamp body 138 decreases.

[0084] Figures 15 and 16 show a fourth embodiment of a balance adapter 153 equipped with a clamping device according to the present invention. The balance adapter 153 has a clamping body 155 comprising adapter elements 157. Compared with the adapter elements 139 shown in Figures 12 and 14, each adapter element 157 has an arrangement region 159 that forms an arrangement surface 161 for the workpiece to be balanced. Thus, here the workpiece is placed on the arrangement surface 161 of the adapter elements 157, uniformly distributed around the spring element 31, and can be clamped from the inside by the clamping body 155. In this case, the clamping surface 153 of each adapter element 157 is formed by a stepped transition between the arrangement region 159 and the region of the adapter element 157 having a connecting web 143. Alternatively, block-shaped adapter elements 157 may also be formed so that workpieces can be clamped by them from the outside.

[0085] Figures 17 and 18 show a fifth embodiment of a balance adapter 163 equipped with a clamping device according to the present invention. The balance adapter 163 has a rod-shaped actuation element 164 made shorter than the actuation element 85. Furthermore, the actuation element 164 is guided to be linearly displaceable in a cylindrical clearance of the substantially rotationally symmetric housing body 165 of the balance adapter 163, via a ball guide, particularly a ball cage.

[0086] Furthermore, in this configuration, the rod-shaped actuation element 164 is connected to the reciprocating piston 167 of the electric motor 169 at the end region facing away from the clamping element 33. The electric motor 169 forms a drive or actuator for the linear displacement of the actuation element 164, and consequently, for the linear displacement of the clamping element 33 connected to the balance adapter 163. In this case, the actuation element 164 can then be linearly displaced between a starting position and an ending position by the electric motor 169.

[0087] Other actuators that can be driven by, for example, hydraulics or pneumatics instead of an electric motor may also be provided. Preferably, such actuators are provided that allow displacement of the clamp element 33 in both the first and second axial directions. [Explanation of Symbols]

[0088] 1 Balance Adapter 3 Fixed area 5. Base 7. Balancing device 9. Drive spindle 11 Balance Adapter Holder 13 Workpieces 15 Adapter base 17 Housing Body 19 Screw connection 21 Housing Body 23 disks 25 Clamping means 27 Clamp Disc 29 Placement plane 31 Spring elements 33 Clamping elements 35 Adapter Elements 37 Clearance 39 Spring part 41 Web 43 Disc portion 45 Central area 47 Web 49 Disc holder 51 T-shaped base 53 Wall area 55 T-shaped apex 57 Wall area 59 Wall area 61 Wall area 63. Indentation 65 Assembly Units 67 Spring part 69 Web 71 Disc section 73 Clearance 75 Web 77 Webholders 79 Wall area 81 Clamp Web 83 Wall area 85 Operating elements 87 Operating means 89 End area 91 Clearance 93 Clearance 95 Shoulder 97 screws 99 Compression spring 101 Main surface wall 103 Engagement wall area 105 Main surface wall 107 Fixing means 109 fixed elements 111 Clamp Ring 112 Wall area 113 Engagement Web 114 Clearance 115 screw 117 Clearance 119 Clearance 121 End area 123 Piston 125 Balance Adapter 127 Adapter elements 129 Placement plane 131 Clamp base 133 Wall area 134 screws 135 pins 136 Flat support 137 Balance Adapter 138 Clamp Body 139 Adapter elements 141 Clamping surface 143 Web 145 disks 147 Placement plane 149 Guide rail 151 Rail holder 153 Clamping surface 155 Clamp Body 157 Adapter elements 159 Placement area 161 Placement plane 163 Balance Adapter 164 Operating elements 165 Housing Body 167 Reciprocating piston 169 Electric motor α cone angle d Clamp diameter

Claims

1. A clamping device comprising a clamping means (25) for clamping an article, A clamping device, in which the clamping means (25) has an adjustment means by which a clamping diameter (d) of a clamping body (27; 138; 155) of the clamping means (25) can be adjusted, and by adjusting the clamping diameter (d) an article placed on at least one placement surface can be clamped, the clamping body (27; 138; 155) has a disk-shaped spring element (31), the disk-shaped spring element (31) biases in a radial direction (r) and has a centrally located clearance (37), the clearance (37) forming at least one spring element cone; said clamping body (27; 138; 155) has a clamping element (33) with two identical clearances (91, 93) corresponding to end regions arranged on opposite sides of said clamping body (27; 138; 155) as viewed in the axial direction, said clamping element (33) being inserted into said clearance (37) of said spring element (31) and having at least one clamping element cone corresponding to said spring element cone, said adjusting means having actuating means (87) with an actuating element (85) in the form of a rod and / or in the form of a cylinder, by means of which said clamping element (33) and said actuating element (85) can be connected by said clearances (91, 93), said clamping element (33) being displaceable in the axial direction (x) of said clamping body (27; 138; 155) relative to said spring element (31) such that the conical surfaces of said clamping element cone and of said spring element cone are moved relative to each other, so that said spring element (31) can be clamped and / or unclamped in said radial direction (r) under the action of said conical surfaces, said clamping element (33) and said spring element (31) forming an assembly unit (65) in the form of a disk, the assembly unit (65) can be arranged in a plurality of rotational positions, the plurality of rotational positions including a first rotational position in which the actuating element (85) is connected to either one of the clearances (91, 93) of the clamp element (33), and a second rotational position in which the assembly unit (65) is rotated 180° from the first rotational position so as to be upside down, and the actuating element (85) is connected to a clearance different from either one of the clearances of the clamp element (33). Clamping device.

2. A clamping device as described in claim 1, characterized in that the actuating element (85) can be displaced in the axial direction of the clamping body (27; 138; 155) between a start position and an end position, and can be connected to the clamping element (33) of the clamping body (27) such that when there is a displacement between the start position and the end position, the actuating element (85) also displaces the clamping element (33).

3. 3. The clamping device according to claim 2, characterized in that, when the assembly unit (65) is arranged in the second rotational position, the spring elements (31) are pushed outward in the radial direction by the displacement of the actuating element (85) connected to the clamping element (33) from the end position to the start position under the action of the conical surface, whereas, when the assembly unit (65) is fixed in the first rotational position, the spring elements (31) can be pulled inward in the radial direction by the displacement of the actuating element (85) connected to the clamping element (33) from the end position to the start position under the action of the conical surface.

4. 4. The clamping device according to claim 2 or 3, characterized in that the actuating element (85) and the clamping element (33) can be connectable to one another in a manner that prevents inappropriate rotation and / or in a releasable manner, and an end region (89) of the actuating element (85) has a non-circular and / or polygonal cross-section that allows the actuating element (85) to be positioned in a contoured manner to at least one corresponding clearance (91, 93) of the clamping element (33).

5. 5. The clamping device according to claim 1, wherein the at least one clamping element cone of the clamping element (33) and / or the at least one spring element cone of the spring element (31) have a cone angle in the range of 1° to 20°.

6. Clamping device according to any one of the preceding claims, characterized in that the clamping element (33) and the spring element (31) are releasably connected to one another by a surface contact connection.

7. 7. The clamping device according to claim 1, wherein the clamping element (33) has a central region (45) which is cylindrical or conical and a number of guide rails (47) which project outwardly from the central region (45), each guide rail (47) being arranged in a contoured manner on a corresponding rail holder (49) of the spring element (33) in a rear gripping engagement, each guide rail (47) being formed in a T-shaped cross section.

8. 8. The clamping device according to claim 7, characterized in that each guide rail (47), which is T-shaped in cross section, is connected to the central region (45) of the clamping element (33) by a base of the T-shape, a wall region (53) of the T-shape top (55) of the guide rail (47) facing away from the central region (45) of the clamping element (33) forms the outer cone of the clamping element (33) and is in surface contact or can be in surface contact with a wall region (57) of the spring element (31) forming an inner cone, and a wall region (59) of the T-shape top (55) of the guide rail (47) facing the central region (45) of the clamping element (33) forms the inner cone of the clamping element (33) and is in surface contact or can be in surface contact with a wall region (61) of the spring element (31) forming the outer cone.

9. 9. The clamping device according to claim 8, characterized in that the T-shaped top (55) of the guide rail (47) is formed in the shape of a rectangular parallelepiped and / or in the shape of a block, and / or that the conical surfaces of the guide rail (47) forming the outer cone and the inner cone are formed as planes or curved in an arcuate shape.

10. 10. The clamping device according to claim 1, wherein the disk-shaped spring element (31) has a plurality of spring portions (39) arranged uniformly distributed in a circumferential direction (U), by means of which the spring element (31) can be biased in the radial direction (r), and wherein, when viewed in the circumferential direction (U) of the clamping body (27; 138; 155), the disk portions (43) of the spring element (31) arranged between the spring portions (39) are connected to each other via the spring portions (39).

11. 11. The clamping device according to claim 10, characterized in that the spring portion (39) is formed by a thin-walled web (41) of the spring element (31), the thin-walled web (41) having a wave-shaped or serpentine-shaped or arched or V-shaped profile when viewed in a plan view of the spring element (31).

12. 12. The clamping device according to claim 1, characterized in that the clamping body (27) has a disk-shaped adapter element (35; 127) biased in the radial direction (r) and thus formed as a clamping disk, the adapter element (35; 127) having a centrally located clearance (73) into which the spring element (31) of the clamping disk (27) is inserted, the adapter element (35; 127) having at least one clamping surface for the clamping of an article.

13. 13. The clamping device according to claim 12, characterized in that the adapter element (127) has a placement surface (129) for placement of a workpiece to be balanced, and the adapter element (127) has a clamping base (131) having a cylindrical clamping base, the clamping base (131) protruding from the placement surface (129) in the axial direction (x) of the clamping disc and arranged inside the placement surface (129), a wall area (133) of the clamping base (131) facing the placement surface (129) forming a clamping surface for the clamping of the article.

14. 13. The clamping device according to claim 12, characterized in that the adapter element (35) has a placement surface (29) for placement of a workpiece to be balanced, and the adapter element (35) has a plurality of clamping webs (81), the clamping webs (81) having thin-walled clamping webs, the clamping webs (81) protruding from the placement surface (29) in the axial direction (x) of the clamping disc and arranged outside the placement surface (29), a wall area (83) of the clamping webs (81) facing the placement surface (29) forming a clamping surface for the clamping of the article.

15. 12. The clamping device according to claim 1, wherein the clamping body (138; 155) comprises a plurality of adapter elements (139; 157) in the form of a block connected to the spring element (31), each adapter element (139; 157) having at least one clamping surface (141; 153) for the clamping of an article, and each adapter element (139; 157) is connected to the spring element (31) by a surface contact connection.

16. Clamping device according to any one of the preceding claims, characterized in that fastening means (107) are provided, by means of which the clamping body (27) is fixed to a base body (15) of the clamping device.

17. 17. A clamping device according to claim 16, when dependent on claim 12, characterized in that the fastening means (107) comprise a fastening element (109) with a clamping ring (111), which is in or can be in face contact with at least one wall area (112) of the spring element (31) and / or the adapter element (35; 127) facing away from the base body (15), the fastening element (109) having a plurality of engagement webs (113), which are cylindrical in shape and which protrude from the clamping ring (111) and which engage in a contoured manner with corresponding clearances (114) of the spring element (31) and / or the adapter element (35; 127).

18. A balancing adapter for a balancing device comprising a clamping device according to any one of claims 1 to 17.

19. A balancing device provided with a balance adapter (1) as described in claim 18, wherein the balancing device (7) has a base (5) with a balance adapter holder (11) for holding the balance adapter (1), the base (5) having at least a rotational drive means (9) for rotationally driving the held balance adapter (1) and / or a drive means (123; 169) for the displacement of the clamp element (33) relative to the spring element (31).

20. A clamping device set for manufacturing a clamping device as claimed in any one of claims 1 to 17, comprising a base (15), a spring element (31), a clamping element (33) and a plurality of adapter elements (35; 127; 139; 157), wherein the spring element (31), the clamping element (33) and at least one adapter element (35; 127; 139; 157) can be connected to form a clamping body (27; 138; 155), and wherein the clamping body (27; 138; 155) can be fixed to the base (15) by fixing means (107), the spring element (31) is formed as a disk, biased in the radial direction (r) and has a centrally located clearance (37), the clearance (37) forming at least one spring element cone, the clamping element (33) can be inserted into the clearance (37) of the spring element (31) and has at least one clamping element cone corresponding to the spring element cone, A clamping device set, wherein each adapter element (35; 127; 139; 157) can be connected to the spring element (31), each adapter element (35; 127; 139; 157) having at least one clamping surface (141; 153) for the clamping of an article, at least some of the adapter elements (35; 127; 139; 157) differing at least in the arrangement and / or design of the at least one clamping surface (141; 153).

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