Housing part for clamping and / or braking device

Abstract

The invention relates to a housing part for a clamping and / or braking device and to a clamping and / or braking device comprising such a housing part. The shell part comprises a first edge of the shell part and a second edge of the shell part opposite to the first edge; an annular recess arranged between the second edge and the first edge for clamping the annular leaf spring between a first bearing surface of the housing part defined by the recess and a second bearing surface of the housing part defined by the recess; a clamping element having a clamping surface designed such that when the leaf spring is clamped in the recess between the first bearing surface and the second bearing surface, a first end of the leaf spring is supported on the first bearing surface and a second end of the leaf spring is pressed against the second bearing surface, therefore, the clamping force and / or the braking force are / is transmitted to an object to be clamped and / or braked. A first housing contact surface extending between the first edge and the first support surface; wherein the at least one groove is arranged on the first housing contact surface to receive the sealing means.

Description

Technical Field

[0001] The present disclosure relates to a housing component for a clamping and / or braking device and a clamping and / or braking device having such a housing component. Background Art

[0002] In the production of tools or machine parts, machining machines, in particular working spindles or other machine tools, are used to machine the material on the workpiece by means of a tool fixed to an axis, in particular to machine it into the desired shape. The axis can be a rotation axis or a pivot axis of such a machine tool. In addition, a table that rotates or pivots about an axis can be used to place the tool or workpiece into a suitable machining position or to move the workpiece at a corresponding rotation speed. One of the prerequisites for precise and efficient machining is a high rotation speed of the axis. Therefore, the task of the emergency or safety system is to stop the rotation of the axis in the event of a fault or malfunction of the system (such as a power failure or cable break) or to fix the axis in a fixed position and thus fix it.

[0003] Common processing machines have electromagnetic, hydraulic or pneumatic clamping and / or braking devices. These devices have friction pads that are frictionally connected to the shaft by force transmission. This makes it possible to fix the shaft at different speeds.

[0004] In hydraulic clamping devices, hydraulic oil acts on a chamber and firmly clamps the rotating shaft or disk. Passive hydraulic clamps are also known. However, such hydraulic clamps have a long reaction time or a short reaction time and therefore require high expenditure. In addition, hydraulic materials, especially hydraulic valves and hydraulic pipes, are expensive and require longer assembly time. Hydraulic oil also leads to additional expenditure for keeping the area around the hydraulic clamp clean.

[0005] In pneumatic clamping and / or braking devices, the elastic element, in particular the elastic plate, is usually acted upon by compressed air and can overcome some of the above-mentioned disadvantages of hydraulic clamping devices.

[0006] EP 1585616 B1 and EP 1651881 B1 describe pneumatic clamping devices with two annular spring leaves which are introduced into the housing of the clamping device and form a pressure space therein which can be acted upon or inflated and vented by compressed air in order to change the curvature of the spring leaves and thus change between a closed state of the clamping device, in which the object to be clamped (such as a rotatable shaft) is clamped, and an open state of the clamping device, in which the object is free. However, it has been shown in practice that the housing parts of the clamp are not sufficiently sealed relative to each other and to the surroundings and can fail or cannot operate without failure. Summary of the invention

[0007] Starting from the prior art mentioned at the outset, it is the object of the present disclosure to provide a device which enables a pneumatic clamping and / or braking device to provide an improved seal.

[0008] This object is achieved by a housing part having the features of patent claim 1 and a clamping and / or braking device having the features of patent claim 17 or 18. Preferred embodiments are described in the dependent claims, the description and the drawings.

[0009] According to the solution of the present invention, a housing component for a pneumatic clamping and / or braking device is provided, the housing component comprising: a first edge of the housing component and a second edge of the housing component opposite to the first edge; an annular recess, which is arranged between the second edge and the first edge, for clamping an annular spring sheet between a first supporting surface of the housing component defined by the recess and a second supporting surface of the housing component defined by the recess; a clamping element, which has a clamping surface, the clamping surface being designed so that when the spring sheet is clamped in the recess between the first supporting surface and the second supporting surface, the first end of the spring sheet is supported on the first supporting surface and the second end of the spring sheet is pressed against the second supporting surface, thereby transmitting the clamping force and / or braking force to the object to be clamped and / or braked; a first housing contact surface, which extends between the first edge and the first supporting surface; wherein at least one groove for accommodating a sealing device is arranged on the first housing contact surface.

[0010] Preferably, the distance between the second bearing surface and the second edge or clamping surface is smaller than the distance between the first bearing surface and the second edge or clamping surface. The second edge may be an edge of a housing part, on or at which the clamping surface is arranged, or, in the state installed in the clamping and / or braking device, the second edge is closer to the object to be clamped or braked and contacts the object in the closable state.

[0011] Preferably, the first bearing surface is at a smaller distance from the first edge than the second bearing surface is at a smaller distance from the first edge. The first edge may be an edge of the housing which, when mounted in the clamping and / or braking device, faces away from the object to be clamped or braked or is further away from the object than the second edge. A hole for fastening a housing part to another housing part to form the clamping and / or braking device may be arranged along the first edge.

[0012] According to the solution of the present invention, a clamping and / or braking device for clamping and / or braking an object to be clamped and / or braked is further provided, the device comprising: a housing, which comprises a first housing component according to the present invention and a second housing component according to the present invention, wherein the two housing components are arranged relative to each other and fastened to each other in the following manner: a first housing contact surface of the first housing component faces a first housing contact surface of the second housing component, and a recess of the first housing component and a recess of the second housing component together form an internal space within the housing; a spring, which is arranged in the internal space and comprises a first annular spring leaf and a second annular spring leaf, wherein the spring leaf is arranged in the internal space in a manner to form at least one pressure space in the internal space, the pressure space being at least partially The invention relates to a device for a housing having a plurality of housing parts, wherein the housing is provided with a plurality of spring sheets, wherein the pressure space can be filled or vented and can be subjected to an overpressure of a pressure medium that can be applied to the housing, wherein a first spring sheet is clamped between a first bearing surface of a first housing part and a second bearing surface of the first housing part; wherein a second spring sheet is clamped between a first bearing surface of a second housing part and a second bearing surface of the second housing part; and wherein the spring sheets are arranged relative to at least one of the pressure spaces so that by filling or venting the pressure space or subjecting the pressure space to an overpressure, the curvature of at least one spring sheet is changed and, as a result, the device is changed between an open state, in which the object is spaced apart from the clamping surfaces, and a closed state, in which one or more of the clamping surfaces transmit a clamping force and / or a braking force to the object. The sealing device can be accommodated in each housing part in a corresponding recess. In this case, a corresponding separate sealing device (i.e. at least two sealing devices per housing of the clamping and / or braking device) can be present in each housing part, or a single sealing device can be accommodated in a recess of a housing part when the housing parts are fastened to each other.

[0013] The problem of fault-prone operation of clamping and / or braking devices due to leakage between housing components and relative to the surrounding environment can be overcome by aspects of the present disclosure.The following findings of the inventors are based on the present disclosure.

[0014] In the past, a large amount of sealing compound was locally applied between the housing parts of the clamp to produce a seal between the housing parts and relative to the surrounding environment. However, locally applied sealing compounds are prone to problems, such as not being applied evenly to any required place or not being in place. The inventors have found that inserting a groove on the first housing contact surface for contacting the housing part with another housing part and extending between the first edge of the housing part and the first supporting surface can reduce the failure rate of the clamping and / or braking device, so as to introduce a sealing device in a targeted manner, such as a sealing compound (e.g., an adhesive and a sealing material) or an elastic material (e.g., an O-ring), and since the groove determines the position where the sealing device can be accommodated, the sealing device can be attached more reliably, thereby achieving a reliable seal between the housing parts and relative to the surrounding environment. In particular, an improved sealing of the pressure space located between each spring leaf and the associated housing part and prone to leakage is achieved by the groove. In summary, the groove on the first housing contact surface reduces the sensitivity to failure and increases the operating time of the clamp. In this way, the amount of required sealing means (such as sealing compounds, for example adhesives and sealing materials) which has been required for a reliable seal to date can also be reduced, which can reduce costs and protect the environment. In this case, the attachment of the groove to the first housing contact surface does not have a negative impact on the dynamics of the opening and closing of the clamping and / or braking device.

[0015] According to a preferred aspect of the present disclosure, the groove has a width of 1 mm to 2 mm, 1.4 mm to 1.6 mm or about 1.5 mm. Alternatively or additionally, the groove has a depth of 0.5 mm to 1.0 mm, 0.65 mm to 0.75 mm or about 0.7 mm. In a given section of the groove, a preferred range or preferred volume of the sealing device to be accommodated is thereby defined, and the possibility of applying too little or too much sealing device is thus reduced.

[0016] According to a preferred aspect of the present disclosure, the cross section of the groove can be in the form of a V (V-shaped), a rectangle with one side open, a U (U-shaped) or a semicircular shape. These shapes are particularly preferred for accommodating and reliably installing the sealing device. The groove can also be in other shapes.

[0017] According to a preferred aspect of the present disclosure, at least one groove extends at least partially around the center point of the annular recess or at least partially along an arc, wherein the arc preferably spans a central angle of at least 45°, 90°, 120°, 135°, 160°, 180°, 225°, 270°, 315°, 350° or 360°. The groove can be an approximately circular or annular configuration. The groove extends at least partially around the first edge. As a result, the groove promotes a seal that is as uniform or even symmetrical as possible at least in a section of the first edge, which helps to extend the operating life of the clamp.

[0018] According to a preferred aspect of the present disclosure, the first housing contact surface further has one or more holes for fastening the housing component to another housing component by a fastening device, and at least one groove extends between the hole on the first housing contact surface and the first bearing surface, wherein the hole is arranged between the first edge on the first housing contact surface and the at least one groove. In other words, when viewed from the object to be clamped or braked, the hole is located outside the groove, with the result that the hole and the fastening device to be attached therein do not have a negative impact on the seal between the housing components and the seal of the housing relative to the surrounding environment. This additionally increases the sealing and reduces the possibility of malfunctions.

[0019] According to a preferred aspect of the present disclosure, the housing component has one, two or more ports for applying a pressure medium (e.g., compressed air) to the housing component (in particular, one or more pressure spaces). In this case, at least one groove is preferably interrupted by one or more ports, with the result that the gap of the port extends along a section of the groove and continues to extend along another section of the groove after being interrupted by the port. Alternatively or additionally, at least one groove on the first housing contact surface extends between the first edge of the housing component and one or more (other) ports, and preferably extends at least partially around the port. This additionally increases the sealing because the groove is guided all the way to the port and may even extend partially around the port, so that the sealing device located in the groove seals the port relative to the first edge of the housing component, thereby sealing the port relative to the surrounding environment. This can reduce the possibility of failure by reducing leakage in the port area.

[0020] By means of the components described herein, both individually and in combination, a clamp can be provided which seals reliably between housing components and relative to the surrounding environment, without thereby adversely affecting the dynamics of the opening and closing of the clamp.

[0021] If this brief description describes features that are not listed in the patent claims, these features do not constitute essential features and do not necessarily have to be included in the patent claims, but these features are particularly prominent preferred implementations of the claimed subject matter and can be combined with each of the patent claims and also with each other as required. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A A schematic cross-section through an inwardly directed passive pneumatic clamping and / or braking device according to the invention is shown in the closed state.

[0023] Figure 1B A schematic cross-section through an outwardly directed passive pneumatic clamping and / or braking device according to the invention is shown in the closed state.

[0024] Figure 2A A schematic cross-section through an inwardly directed passive pneumatic clamping and / or braking device according to the invention is shown in the open state.

[0025] Figure 2B A schematic cross-section through an outwardly directed passive pneumatic clamping and / or braking device according to the invention is shown in the open state.

[0026] Figure 3A A schematic cross-section through an inwardly directed active pneumatic clamping and / or braking device according to the invention is shown in the open state.

[0027] Figure 3B A schematic cross-section through an outwardly directed active pneumatic clamping and / or braking device according to the invention is shown in the open state.

[0028] Figure 4A A schematic cross-section through an inwardly directed active pneumatic clamping and / or braking device according to the invention is shown in the closed state.

[0029] Figure 4B A schematic cross-section through an outwardly directed active pneumatic clamping and / or braking device according to the invention is shown in the closed state.

[0030] Figure 5A A cross section through a pneumatic clamping and / or braking device according to the invention is shown in a three-dimensional representation.

[0031] FIG. 5B to FIG. 5D Shown is taken from Figure 5A A modification example of the shell component.

[0032] Figure 6 A cross-section through a variant of the housing component according to the invention is shown.

[0033] Figure 7 A plan view of an annular spring leaf is shown.

[0034] Figure 8 Shown according to Figure 7 A plan view of a variant of a housing component according to the invention for use with an annular spring sheet.

[0035] Components shown in several figures have the same reference numerals. DETAILED DESCRIPTION

[0036] The present disclosure relates to a housing component for a clamping and / or braking device and a clamping and / or braking device having one or more such housing components.

[0037] If in this document reference is made to a device "clamp" or "clamping device", "clamping force" or the process of "clamping", this also includes a device "brake" or "brake device" or "braking force" or the process of "braking".

[0038] Figures 1A to 5A Schematically shown is a cross-section through such a clamping device 10 according to the invention, which has two housing parts 3a, 3b according to the invention and has a spring 1, which is arranged in the housing 3 and comprises at least two elastic elements 1a, 1b, in each case in the form of annular spring leaves 1a, 1b.

[0039] The clamping device 10 according to the invention comprises a housing 3, which comprises a first housing part 3a according to the invention and a second housing part 3b according to the invention. The housing parts 3a, 3b according to the invention comprise the components mentioned at the beginning, in particular: a second edge 100a of the housing parts 3a, 3b and a first edge 100b of the housing parts 3a, 3b, wherein the edges 100a, 100b are positioned relative to each other; an annular cutout 11, which is arranged between the second edge 100a and the first edge 100b, for clamping the annular spring sheet 1a, 1b between a first bearing surface 101 of the housing parts 3a, 3b defined by the cutout 11 and a second bearing surface 102 of the housing parts 3a, 3b defined by the cutout 11; a clamping element 8, which has a clamping surface 7, The clamping surface 7 is designed so that when the spring pieces 1a, 1b are clamped in the cutout 11 between the first bearing surface 101 and the second bearing surface 102, the first ends of the spring pieces 1a, 1b are supported on the first bearing surface 101, and the second ends of the spring pieces 1a, 1b are pressed against the second bearing surface 102, thereby transmitting the clamping force and / or braking force to the object 5 to be clamped and / or braked; a first housing contact surface 12a, which extends between the first edge 100b and the first bearing surface 101; wherein at least one groove 110 for accommodating a sealing device is arranged or inserted on the first housing contact surface 12a. These components will be explained in more detail in conjunction with Figures 5, 6 and 8.

[0040] Figures 1A to 5AThe two housing parts 3a, 3b of the clamping device 10 according to the invention shown are arranged relative to each other and fastened to each other so that the first housing contact surface 12a of the first housing part 3a faces the first housing contact surface 12a of the second housing part 3b, and the recess 11 of the first housing part 3a and the recess 11 of the second housing part 3b together form an inner space 13 in the housing 3. The clamping device 10 further comprises a spring 1, which is arranged in the inner space 13 and comprises a first annular spring leaf 1a and a second annular spring leaf 1b, wherein the spring leaves 1a, 1b are arranged in the inner space 13 so that at least one pressure space 2, 4 is formed in the inner space 13, which pressure space is at least partially delimited by the spring leaves 1a, 1b, wherein the pressure space 2, 4 can be filled or exhausted and can withstand an overpressure of a pressure medium that can be applied to the housing 3, wherein the first spring leaf 1a is clamped between the first contact surface 101 of the first housing part 3a and the second contact surface 102 of the first housing part 3a. wherein the second spring leaf 1 b is clamped between a first contact surface 101 of the second housing part 3 b and a second contact surface 102 of the second housing part 3 b; and wherein the spring leaves 1 a, 1 b are arranged relative to at least one pressure space 2, 4 so that the bending of at least one of the spring leaves 1 a, 1 b can be changed by inflating or venting the pressure space 2, 4 or subjecting the pressure space 2, 4 to an overpressure, as a result of which the device 10 changes between an open state in which the object 5 is spaced apart from the clamping surface 7 and a closed state in which one or more clamping surfaces 7 transmit a clamping force and / or a braking force to the object 5.

[0041] Figure 1A , 1B 4A and 4B each show such a clamping device 10 in a closed state, wherein the clamping surface 7 of the clamping element 8 contacts the periphery of the object 5. The clamping element 8 is also referred to as a clamping rib. The clamping element 8 can be formed integrally with the rest of the housing parts 3a, 3b, or it can be a component of the housing parts 3a, 3b and structurally separated from the rest.

[0042] The clamping force or action of the clamping surface 7 on the object 5 to be clamped occurs in a clamping plane which is formed by two vectors, each of which forms a radius of the annular elastic element 1a, 1b or the annular recess 11 (see Figure 5A). The axis 9 may extend through the center point of the ring of the assembly described herein as annular, and may therefore be referred to as the main axis of the clamping device 10, which may extend perpendicular to the clamping plane. If reference is made herein to "inner / inner" and "outer / outer" housing contact surfaces, support surfaces, edges or ends, the inner housing contact surface, support surface, edge or end may be closer to the axis 9 than the corresponding outer housing contact surface, support surface, edge or end. This may also apply to other assemblies. The terms "inner / inner(r)" and "outer / outer(r)" may have other meanings.

[0043] The clamping device 10 may have a rotationally symmetrical configuration about the main axis 9. The main axis 9 may pass approximately or exactly centrally through the opening of the clamping device 10 ( Figure 5B The opening 14 in the Figure 1A , 4A In the embodiment, the object 5 to be clamped (e.g. a rotatable shaft of a machine or a workbench) is placed in the opening 14 and the clamping force of the clamping device is thus directed radially inwards in the clamping plane towards the main axis 9 (perpendicular to the main axis 9). Figure 1B , Figure 2B , Figure 3B , Figure 4B In the embodiment, the object 5 to be clamped is placed outside the clamping device 10 and the clamping force of the clamping device is therefore directed radially outwards away from the main axis 9 (perpendicular to the main axis 9) in the clamping plane.

[0044] exist Figure 1A , 2A , 3A, 4A, the clamping element 8 is located between the spring 1 and the opening 14 or the main axis 9. In contrast, in Figure 1B , 2B , 3B, 4B, the object 5 to be clamped at least partially surrounds the clamping device 10, with the result that the clamping element 8 is located between the object 5 and the opening 14 or the main axis 9. Figure 1B , Figure 2B , Figure 3B , Figure 4B In this embodiment, a component can be introduced into the opening 14 instead of the object 5 to be clamped, which component at least partially fills the opening 14 and through which the main axis 9 extends.

[0045] exist Figures 1A to 5A In each case, the spring 1 is clamped between two bearing surfaces ( Figure 5C and Figure 5D The first support surface 101 and the second support surface 102) are located between the two support surfaces. Figures 1A to 2BIn the pressure-free initial state of the device 10 in FIG. 1 , the spring 1 may be slightly bent in order to be securely fixed in the housing 3 in this state, and the same applies to any other state of the device 10, wherein the degree of bending of the spring 1 depends on the state in which the device 10 is located. If the device 10 is in a state in which the spring 1 is bent (e.g. more bent than in the pressure-free initial state, such as, for example, in the open state), the exhaustion of the second (e.g. inner) pressure chamber 2 of the spring 1 and the filling of the first (e.g. outer) pressure chamber 4 may lead to at least partial relaxation of the spring 1, while the spring 1 is pressed against a radial bearing surface (the distance of the radial bearing surface is slightly increased), as a result of which the housing 3 is elastically deformed in the region of the clamping element 8 or the clamping surface 7, and the clamping surface 7 thereby contacts the object 5 and is pressed against the object 5 with a (predetermined) clamping force in order to securely clamp the object 5. The object 5 is securely clamped and the clamping device 10 is in the closed state, as shown in FIG. Figure 1A and 1B In the closed state of the device 10 , the spring 1 can still be slightly bent even after partial relaxation, so that it is firmly fixed in the housing 3 in this state.

[0046] In this case, the clamping element 8 can be an elastic element, such as a spring fork, which in the stress-free initial state of the device 10 is moved by the spring force of the (slightly) bent spring 1 from the relaxed initial position of the elastic element into the supporting position, for example by bending of the spring fork 8, until an equilibrium occurs between the restoring force of the elastic element 8 and the spring force of the spring 1 in the stress-free initial state. In this equilibrium state, the clamping surface 7 can be pressed against the object 5.

[0047] There is the optional possibility of increasing the clamping force by a predetermined value by additionally applying compressed air (eg 4 bar or 6 bar) to the first pressure chamber 4 in the closed state. Figure 1A , 1B 4 is indicated by an optional additional compressed air pump (booster) 6 and a hatch (compressed air) in the first pressure chamber 4. The pressure chamber 4 ("external pressure chamber 4") arranged on the outside (upper or lower side) of the spring leaf can be connected via an opening in the housing 3 to an air port I (also called "closed") to which a compressed air pump 6 can be connected.

[0048] As a result, for example, it is possible to actuate the device 10 in such a way that a change is made between a braking movement of the object 5 (in the pressure-free state) and a complete gripping of the object (in the event of application of sufficient pressure).

[0049] Although two pressure chambers 2, 4 are shown and described herein by way of example, the clamping device 10 can also be operated with a single pressure chamber, which can, for example, be a pressure chamber 2 ("internal pressure chamber 2") or an external pressure chamber 4 arranged between the spring leaves (on the inner side of the spring leaves).

[0050] Figure 2A and 2B The open state is shown respectively. Figure 1A and 1B A clamping device 10 in which the clamping surface 7 does not contact the periphery of the object 5 or is spaced apart from the periphery of the object 5. The internal pressure chamber 2 can be connected to an air port II (also referred to as an "opening") through an opening in the housing 3, to which a compressed air pump 6 can be connected.

[0051] Compressed air (e.g. 4 bar or 6 bar) is applied to the second (e.g. inner) pressure chamber 2 by a compressed air pump 6 and the first (e.g. outer) pressure chamber 4 is exhausted, with Figure 1A , 1B Compared to the closed state, the spring 1 is bent or supported more strongly (convexly) and the distance between the spring 1 or the two bearing surfaces is radially shortened. The clamping surface 7 is lifted from the object 5 to release the clamping. The object 5 is free to move (e.g., rotatable about the axis 9 or linearly movable along the axis 9) and the clamping device 10 is open.

[0052] The device 10 may be changed back and forth between a closed state and an open state.

[0053] The pneumatic clamp 10 has many advantages over hydraulic clamps.

[0054] For example, by using a combination of an elastic component (in this case a spring 1 together with elastic elements 1a, 1b) and compressed air, extremely short reaction times can be achieved when switching between the open and closed states, and a safe clamping of the object 5 can also be achieved. The spring 1 can preferably have a sheet-like construction, as shown in more detail in FIG. 5, in which two elastic elements 1a, 1b, one on top of the other, form the spring 1 and an internal pressure chamber 2 of the spring 1 between the sheets 1a, 1b. The sheets 1a, 1b can also be annular, as shown in FIG. 5, and can optionally additionally have radial grooves so that the inner diameter can be changed with particularly low forces. The elastic elements 1a, 1b can be coated with rubber at least in the region of the grooves in order to produce the seal required for compressed air. The elastic elements 1a, 1b usually have such a pressure-resistant and therefore elastically bendable form and are arranged in the housing 3 of the clamping device 10, so that the internal pressure chamber 2 is formed between the elastic elements 1a, 1b in the spring 1, and the external pressure chamber 4 is formed between each elastic element 1a, 1b and the housing 3 or housing parts 3a, 3b of the clamping device 10. Figure 5 shows a diagram similar to Figure 1A and Figure 2A A three-dimensional view of the clamping device 10.

[0055] like Figure 1A As shown, by filling or applying compressed air to the first (e.g. external) pressure chamber 4 and exhausting the second (e.g. internal) pressure chamber 2, the spring 1 is at least partially relaxed and generates a clamping force on the object 5 to be clamped, in particular on the outer circumference of the shaft 5. As a result, in the event of an energy or pressure failure, the object 5 is clamped or the shaft 5 is immediately stationary, and a safe clamping is thus provided. Depending on the size, such a pneumatic clamp 10 can achieve a holding torque of several 100Nm and up to several 1000Nm, which can be further increased by additionally applying compressed air (via a pressure pump 6 (booster)) to the first (e.g. external) pressure chamber 4, as Figure 1A . Here, compressed air of a few bar (e.g. 4 bar or 6 bar) is sufficient to provide a multiple of the holding torque achieved without a pressure intensifier. In this case, use is made of the fact that the small transverse bending of the sheets 1a, 1b (perpendicular to their longitudinal axis) generates a large spring force when the clamp 10 is switched between the open and closed state, which can be used to clamp or to release the prestressed clamping device 10. This enables reliable clamping and release even of rapidly rotating machine shafts 5.

[0056] In the case of pneumatic materials, costs and assembly outlays are also lower compared to hydraulic materials, and since compressed air is used, no additional installation and cleaning costs are required. This pneumatic clamp also allows for smaller overall dimensions, since small lateral deflections and small spring longitudinal ranges (variations), as well as a small pressure space volume, are sufficient to apply the required clamping force.

[0057] In the case of pneumatic grippers, a distinction is made in principle between Figures 1A to 2B The passive clamping device 10 shown and FIG. 3A to FIG. 4B The active clamping device 10 is shown.

[0058] In the unstressed initial state, the spring 1 can be bent to different degrees (laterally) and thus shorten radially to different degrees. The inner side of the housing 3 can be adapted to the curvature of the elastic elements 1a, 1b or can define the curvature. The corresponding stop surface for the elastic elements 1a, 1b can be formed, for example, by the inner wall of the housing. The inner wall of the housing can have a complementary (e.g. concave) form to the curvature (e.g. convex) of the elastic elements 1a, 1b.

[0059] In the case of a passive clamping device 10, in the stress-free initial state, the spring 1 is usually slightly elastically bent (eg convexly) or prestressed, and the clamping device 10 can be closed ( Figure 1A , 1BThe clamping device 10 is opened only by applying a force from the inside by applying compressed air to the second (eg inner) pressure chamber 2 ( Figure 2A , 2B ). In most cases, the spring 1 is slightly bent in the pressure-free initial state, with the result that, in the case of clamping or in the case of a pressure drop, the spring force provided by the energy stored in the spring 1 is transmitted as a clamping force to the object 5 to be clamped, so as to clamp the object 5.

[0060] In the case of the active clamping device 10, in the pressure-free initial state ( Figure 3A , 3B ), the spring 1 is bent laterally outwards more strongly than in the case of a passive clamping device, in particular bulges more strongly, as a result of which the distance between the two radial bearing surfaces is shortened and the clamping device 10 opens. No clamping force is generated on the object 5 via the clamping surface 7. The object is free because the clamping surface 7 does not contact the object 5 or is spaced apart from the object 5.

[0061] By plastic deformation of the spring leaves 1a, 1b, the spring 1 can bend more strongly laterally outwards in the stress-free initial state and thus shorten more radially than in the case of a passive clamping device, given the same housing 3. This smaller radial extent of the spring leaves 1a, 1b in the stress-free initial state can lead to an open state of the clamping device 10 in the stress-free initial state. Even in the case of plastic deformation, the spring leaves 1a, 1b bend elastically and press against the bearing surface, so that the spring is fixed in the housing. The interior space of the housing or recess can accommodate the stronger curvature caused by the plastic deformation in the initial state.

[0062] The clamping force must now be actively introduced from the outside, e.g. Figure 4A and 4B As shown, in order to transform the clamp into the closed state. Here, compressed air is introduced into the first (e.g. external) pressure chamber 4 by means of the compressed air pump 6, and compressed air is thus applied to the spring 1 from the outside, so that the spring 1 is actively relaxed, the curvature of the spring 1 is reduced, the distance between the two bearing surfaces is increased, and the housing 3 is elastically deformed in the region of the clamping element 8 or the clamping surface 7, so that the clamping surface 7 contacts the object 5 and generates a clamping force on the object 5, thereby clamping the object 5 firmly. The active clamping device 10 is then in the closed state.

[0063] Depending on the area of ​​application and the prescribed safety regulations, active or passive clamping systems 10 are therefore used. If a safe clamping is primarily required, a passive clamping device is usually used. With such a pneumatic passive clamping system, even in a pressure-free state, a predetermined clamping force can be generated in the corresponding device components in the entire device, with which the object 5 to be clamped is acted. As a result of the application of overpressure or underpressure, the force transmitted to the object can be increased, reduced or completely eliminated, which opens up a variety of applications. In contrast, if the clamping device is primarily used for intentional operations such as tool changes, active clamping devices are usually used.

[0064] Figure 5A A cross-sectional view of a pneumatic clamping device 10 according to the invention is shown in three dimensions, and the present invention is shown by way of example in accordance with the invention. Figure 1A , 2A , 3A and 4A with an inwardly directed clamping force device 10. Then, FIG. 5B to FIG. 8 Further details of the device 10 are shown. However, for FIG. 5A to FIG. 8 The contents shown in the device apply accordingly to the Figure 1B , 2B , 3B and 4B of the device 10 with an outwardly directed clamping force.

[0065] like Figure 5A As shown, the housing 3 of the clamping device 10 according to the present invention comprises two housing parts 3a, 3b according to the present invention, each housing part 3a, 3b having a groove (not shown in this document) (see Figure 6 110), wherein the housing parts 3a, 3b are fastened to each other by fastening means 17 (such as screws) through holes 15, and are mounted in such a way that in the mounted state, the recesses of the housing parts coincide with each other, and the two housing parts a, 3b define an inner space 13 between the housing parts 3a, 3b in the housing 3, in which the spring 1 and its annular spring pieces 1a, 1b are arranged. The housing parts 3a, 3b each define a recess 11, which is also annular and is used to accommodate the annular spring pieces 1a, 1b, as shown in FIG. FIG. 5A to FIG. 5D At least a portion of the first bearing surface 101 of the housing component may extend (substantially) perpendicularly to the radial direction R of the annular recess 11 and / or a portion of the second bearing surface 102 of the housing component may extend (substantially) perpendicularly to the radial direction R of the annular recess 11 .

[0066] Opening 14( Figure 5B) extends through the center of the housing 3, into which an object 5 to be clamped, such as a shaft, can be introduced. The housing can extend 360° around the opening and at least partially enclose the object 5 in at least one plane, referred to as the clamping plane. The central main axis 9 of the clamping device extends centrally through the opening 14 and perpendicular to the clamping plane. Figure 1A , Figure 2A , Figure 3A , Figure 4A , Figure 5A In the clamping device of the embodiment of the present invention, the main axis 9 extends centrally through the shaft along the longitudinal axis of the shaft.

[0067] Positioned along the periphery of the housing 3 or the opening 14 are one or more clamping surfaces 7 which, in the event of elastic deformation of the housing 3 in the region of the clamping elements 8 or the clamping surfaces 7, can generate a clamping force on the periphery of the object 5, thereby clamping the object 5. In order to effectively open and close the clamping device 10 relative to the object 5 to be clamped without the risk of damaging the object 5, it is desirable that the clamping force is symmetrically distributed along the clamping surfaces 7 or along the periphery of the object 5. An asymmetrical distribution of the clamping force may lead to damage to the object 5. Preferably, one or both of the adjacent surfaces 101, 102 have a circular configuration in the clamping plane. Preferably, the clamping surface 7 has a circular configuration in the clamping plane. The clamping element 8 may be of an annular configuration. All annular or circular components described herein may each, individually or in combination, have as a center point the intersection of the main axis 9 with the clamping plane (e.g., the center point of the opening 14).

[0068] Figure 5B -D shows an embodiment of a housing part according to the invention (here Figure 5A The housing parts 3a, 3b according to the invention comprise the components mentioned at the outset, namely a second edge 100a (here an inner edge) of the housing parts 3a, 3b and a first edge 100b (here an outer edge) of the housing parts 3a, 3b, wherein the edges 100a, 100b are positioned opposite each other, and an annular recess 11, which is arranged between the second edge 100a and the first edge 100b, for clamping the annular spring blade 1a, 1b between a first bearing surface 101 (here an outer bearing surface) of the housing parts 3a, 3b defined by the recess 11 and the housing parts 3a, 3b. The clamping element 8 has a clamping surface 7, and when the spring pieces 1a, 1b are clamped in the recess 11 between the first bearing surface 101 and the second bearing surface 102, the clamping surface 7 is designed so that the first end of the spring pieces 1a, 1b is supported on the first bearing surface 101 and the second end of the spring pieces 1a, 1b is pressed against the second bearing surface 102, so that the clamping force and / or braking force is transmitted to the object 5 to be clamped and / or braked (see Figure 5A , 5B , an object 5 in the opening 14); a first housing contact surface 12a (here an outer housing contact surface) extending between the first edge 100b and the first bearing surface 101; wherein at least one groove 110 for accommodating a sealing device is arranged or inserted on the first housing contact surface 12a. Preferably, the cross section of the groove 110 formed by the groove 110 in the radial direction R may be in the form of a V (V-shaped, V is open in the direction of the surface 12a), a rectangle open on the side facing the surface 12a, a U (U-shaped, U is open in the direction of the surface 12a) or a semicircular shape. The housing parts 3a, 3b may include a second housing contact surface 12b (here an inner housing contact surface) extending between the second bearing surface 102 and the second edge 100b.

[0069] The housing parts 3a, 3b extend between a second edge 100a and a first edge 100b and may preferably have an annular configuration, the second edge 100a being located closer to the axis 9 in this context and the first edge 100b being located further away from the axis 9 in this context. The housing part 3a comprises an annular recess 11 for clamping the annular spring piece 1a, wherein the housing part 3a has an inner surface defined by the recess 11 (see Figure 6 105 in). The annular recess 11 preferably defines an annular opening 12 in the housing component, wherein the annular opening 12 is formed between a first (eg annular) housing contact surface 12a of the housing component and a second (eg annular) housing contact surface 12b of the housing component.

[0070] When the first upper surface (see Figure 5B 16c) When the spring piece 1a facing the inner surface 105 is introduced into the recess 11 through the opening 12 and clamped in the recess 11, a first pressure space 4 is formed between the inner surface 105 and the spring piece 1a.

[0071] like Figure 5C and Figure 5D As shown, the spring leaf 1a of the spring 1 extends from a first bearing surface 101 in the housing part 3a to a second bearing surface 102 in the housing part 3a and can contact the latter. In this case, from the center point of the opening 14, the first bearing surface 101 is arranged to be radially more outside than the second bearing surface 102.

[0072] Figure 5C Shows Figure 5B A cross-sectional view of the housing part 3 a is shown, wherein the upper piece 1 a of the spring 1 adjoins the first bearing surface 101 and preferably contacts the first bearing surface 101 . Figure 5D Shows Figure 5B1. A cross-sectional view of the housing part 3a is shown, in which the upper leaf 1a of the spring 1 adjoins the second bearing surface 102 and preferably contacts the second bearing surface 102. However, it is also possible to provide one or more further components, via which the spring leaf 1a exerts its spring force on the bearing surface 101, 102, radially in each case between the spring leaf 1a and the bearing surface or surfaces 101, 102.

[0073] like Figures 5B-5D As shown, the spring leaf 1a is clamped in a recess 11 between the bearing surfaces 101, 102 of the housing part 3a. Within the assembly of the bearing surfaces 101, 102 of the housing part 3a, each leaf of the spring 1 is introduced through the opening 12 into the recess 11 of the respectively associated housing part in the direction of the main axis 9 of the clamping device 10 until the respective leaf abuts against a stop 112, 122 at the end of each of the two bearing surfaces 101, 102 and can therefore not be introduced further into the recess 11. Since the extent of the spring leaf 1a in the clamping plane or in the radial direction of the annular recess can be greater than the extent of the inner space defined by the housing parts, the leaf 1a can be bent or prestressed in the pressure-free initial state.

[0074] The spring leaf 1 a may be coated (eg vulcanized) with an elastic sealing material, preferably rubber or another suitable material.

[0075] Figure 6 Shown from Figure 5B More details of the housing part 3a according to the invention. In addition to the recess 11, the first bearing surface 101 and the second bearing surface 102, Figure 6 Also shown is the groove 101 and further optional features such as the inner surface 105 , the hole 15 , the bevels 103 , 104 and the notch 106 .

[0076] The housing parts 3a, 3b include an annular recess 11 for clamping the annular spring pieces 1a, 1b, wherein the recess 11 can form a first annular edge on a first housing contact surface 12a of the annular opening 12 of the housing parts 3a, 3b, and a second annular edge on a second housing contact surface 12b, wherein the annular recess 11 defines an inner surface 105 of the housing parts 3a, 3b between the first annular edge and the second annular edge, wherein the inner surface 105 forms a first chamfer 103 (or a long chamfer) in the region of the first annular edge, and the inner surface 105 forms a second chamfer 104 (or a long chamfer) in the region of the second annular edge, wherein the chamfers 103, 104 are oriented so that the annular opening 12 expands toward the first and second annular edges or the corresponding housing contact surfaces (see Figure 6 12a, 12b).

[0077] When the spring piece 1a, 1b with the first side surface 16c facing the inner surface 105 is clamped in the recess 11, the coating of the spring piece 1a, 1b will produce a preferred sealing contact with at least a first section of the inner side of the housing part 3a, 3b. The first section can include the bearing surfaces 101, 102, the inclined surfaces 103, 104 and / or other parts of the inner surface 105. The recess 106 contributes to the dynamic performance of the clamping element 8, so that the clamping element 8 can bend further.

[0078] The inner surface 105 may include a first bearing surface 101 and a second bearing surface 102, the first bearing surface 101 and the second bearing surface 102 being formed to clamp the spring pieces 1a, 1b therebetween, wherein the first inclined surface 103 is arranged between the first bearing surface 101 and the first annular edge of the surface 12a, and wherein the second inclined surface 104 is arranged between the second bearing surface 102 and the second annular edge of the surface 12a. When the spring pieces 1a, 1b with the first side 16c facing the inner surface 105 are clamped in the recess 11, the coating of the pieces 1a, 1b may preferably be in sealing contact with the inclined surfaces 103, 104.

[0079] like Figure 6 As shown, the first support surface 101 can be formed or merged into a first inclined surface 103 (or a long inclined surface) and / or the second support surface 102 can be formed or merged into a second inclined surface 104 (or a long inclined surface), wherein the inclined surfaces 103, 104 are each preferably oriented so that the annular opening 12 or the recess 11 expands toward the first edge and the second edge of the surface 12a, 12b (see Figure 6 and Figure 5B ).

[0080] The housing parts 3a, 3b have a preferably annular groove or groove 110 for accommodating a sealing means (e.g. a sealing compound or a rubber O-ring) on ​​the first housing contact surface 12a. The groove or groove 110 may extend partially or preferably completely around the housing parts 3a, 3b on the first housing contact surface 12a along (e.g. parallel to) a first edge 100b of the housing part, between the first edge 100b of the housing part and the first bearing surface 101 or recess 11. The groove or groove 110 may alternatively or additionally extend partially or preferably completely around the housing parts 3a, 3b in the region of the surface 12b along the outer circumference of the housing part, or between a second edge 100a of the housing part and the second bearing surface 102 or recess 11.

[0081] like Figure 6 As shown in the example, the first housing contact surface 12a may also have one or more holes 15 for fastening the housing component 3a to another housing component 3b by means of a fastening device 17 (see Figure 5B). The groove 110 may extend on the first housing contact surface 12a between the hole 15 and the first bearing surface 101. The hole 15 is arranged on the first housing contact surface 12a between the first edge 100b and the groove 110. The groove 110 may have a width B of 1 mm to 2 mm, 1.4 mm to 1.6 mm or 1.5 mm. The groove may have a depth of 0.5 mm to 1.0 mm, 0.65 mm to 0.75 mm or 0.7 mm. These dimensions are particularly advantageous in order to precisely accommodate and specifically attach as many sealing devices as possible (such as O-rings, adhesives and sealing materials, etc.) as required. The consumption of sealing devices is thereby reduced.

[0082] An advantage of the groove 110 is that a sealing function is achieved, which is very important for operation in the closed state, because it can achieve a seal during millions of additional air (boost) switching processes, which allows the targeted use of sealing devices (adhesives and sealing materials) between the two housing halves, thus reducing consumption. Due to the change in the pitch circle diameter of the connecting screw, it is possible to introduce a groove on the outer circumference between the "open" and "closed" port.

[0083] Figure 7 An exemplary embodiment of a spring sheet 1A, 1B is shown with a first end sealing device 30 and / or a second end sealing device 20. The sealing devices 20, 20 may be made of an elastic sealing material such as rubber and may be part of an elastic sealing coating (e.g., a rubber coating) of the spring sheet, which is vulcanized onto the spring sheet, for example.

[0084] The first port sealing device 30 and the second port sealing device 20 may be disposed on opposite portions of the second edge 100 a or the first edge 100 b of the annular spring sheet.

[0085] The first end sealing device 30 may be arranged at least at the second edge 100a and / or the first edge 100b relative to the spring pieces 1a, 1b (see Figure 7 ) in a radially inward or outwardly offset section. The first port sealing device 30 may radially protrude beyond the second edge 100a or the first edge 100b (see Figure 7 ).

[0086] The second end sealing device 20 may be arranged at least at the second edge 100a and / or the first edge 100b relative to the spring pieces 1a, 1b (see Figure 7 ) in a radially inward or outwardly offset section. The second port sealing device 20 may radially protrude beyond the second edge 100a or the first edge 100b (see Figure 7 ).

[0087] according to Figure 7The spring plates 1A, 1B can be clamped in accordance with Figure 5B , 6 and 8 in the housing parts 3a, 3b. In this case, the elastic elements 1a, 1b are clamped in the groove 11 between the second edge 100a of the housing parts 3a, 3b (or the clamping element 8 having the clamping surface 7 or the second housing contact surface 12b) and the first edge 100b (or the first housing contact surface 12a), so that the first port sealing device 30 contacts the area of the housing parts 3a, 3b for applying the pressure medium to the first port I of the housing parts, and the second port sealing device 20 contacts the area of the housing parts 3a, 3b for applying the pressure medium to the second port II of the housing parts (see Figure 7 , 8 ). This is done twice, and as a result, two such housing parts 3a, 3b are prepared, each clamping the spring plates 1a, 1b, and then they are fastened to each other to form the housing 3 as shown in Figure 5A .

[0088] The groove 110 extends on the first housing contact surface 12a and can be designed to at least partially surround the object 5 (see Figure 5A ). The groove 110 can at least partially extend along a circular arc. The circular arc can span a central angle of at least 45°, 90°, 120°, 135°, 160°, 180°, 225°, 270°, 315°, 350° or 360°. In Figure 8 , the central angle is 360° because the groove 110 once extended completely around the center point of the opening 14.

[0089] However, the groove 110 can be interrupted by one or more of the ports I, II and / or, as shown in Figure 8 , the groove 110 on the first housing contact surface 12b can extend between the first edge 100b of the housing parts 3a, 3b and one or more of the ports I, II and preferably at least partially surround the ports. Since the groove 110 is guided to the ports I, II and may even partially surround the ports, the sealing device located in the groove 110 seals the ports I, II with respect to the first edge 100b of the housing parts and the surrounding environment. This reduces the leakage in the areas of the ports I, II, thereby reducing the likelihood of failure.

[0090] In FIGS. 5 to Figure 8In the embodiment of the present invention, a sealing device (e.g. a rubber ring, an O-ring made of rubber) can be accommodated in a groove (see 110) of each housing part 3a, 3b. In this case, a corresponding separate sealing device (that is, at least two sealing devices in total per housing 3 of the clamping and / or braking device 10) can be present in each of the housing parts 3a, 3b, or a single sealing device can be accommodated in a groove of the housing parts 3a, 3b when the housing parts 3a, 3b are fastened to each other.

[0091] As already explained, Figures 5 to Figure 8 By way of example, it is shown that Figure 1A , 2A , 3A and 4A with an inwardly directed clamping force device 10. In this case, the first edge 100b is the outer edge along which the optional hole 15 is arranged, and the second edge 100a is the inner edge facing the object 5. The second support surface 102 is then positioned more inwardly than the first support surface 101.

[0092] However, for FIG. 5A to FIG. 8 The contents shown in the device apply accordingly to the Figure 1B , 2B , 3B and 4B with an outwardly directed holding force device 10. In the latter case, the first edge 100b will be the inner edge along which the optional hole 15 is arranged, and the second edge 100a will be the outer edge facing the object 5. The second bearing surface 101 is then located further outward than the first bearing surface 101.

[0093] By means of the components described herein, both individually and in combination, a clamp can be provided which seals reliably between housing components and relative to the surrounding environment, without thereby adversely affecting the dynamics of the opening and closing of the clamp.

[0094] Preferred embodiments of the subject matter claimed by the appended claims are described in the specification and drawings. The optional features disclosed in the above description, claims and drawings can be used alone or in any desired combination to implement the subject matter claimed here according to the appended claims in its various configurations.

[0095] The above-mentioned various aspects and embodiments can be combined to create additional embodiments. According to the above detailed description, these and other changes can be made to the embodiments. Generally, the terms used in the appended claims should not be interpreted as limiting the claims to the specific aspects and embodiments disclosed in the specification and claims, but to cover all possible embodiments and the full range of equivalents given by these claims.

Claims

1. A housing component (3a, 3b) for a pneumatic clamping and / or braking device (10), the housing component (3a, 3b) comprising: a first edge (100b) of the shell part (3a, 3b) and a second edge (100a) of the shell part (3a, 3b) opposite to the first edge (100b); an annular recess (11), the annular recess (11) being arranged between the second edge (100a) and the first edge (100b) and used for clamping the annular spring sheet (1a, 1b) between a first supporting surface (101) of the housing part (3a, 3b) defined by the recess (11) and a second supporting surface (102) of the housing part (3a, 3b) defined by the recess (11); a clamping element (8), the clamping element (8) having a clamping surface (7), the clamping surface (7) being designed such that when the spring leaf (1a, 1b) is clamped in the recess (11) between the first supporting surface (101) and the second supporting surface (102), the first end of the spring leaf (1a, 1b) is supported on the first supporting surface (101), and the second end of the spring leaf (1a, 1b) is pressed against the second supporting surface (102), thereby transmitting a clamping force and / or a braking force to the object (5) to be clamped and / or braked; a first housing contact surface (12a), the first housing contact surface (12a) extending between the first edge (100b) and the first support surface (101); Features: At least one groove (110) is arranged on the first housing contact surface (12a) for accommodating a sealing device.

2. The housing component according to claim 1, characterized in that: The first housing contact surface (12a) further has one or more holes (15) for fastening the housing component (3a) to another housing component (3b) by means of fastening means (17).

3. The housing component according to claim 2, characterized in that: At least one groove (110) on the first housing contact surface (12a) extends between the hole (15) and the first support surface (101).

4. The housing component according to claim 2 or 3, characterized in that: The hole (15) on the first housing contact surface (12a) is arranged between the first edge (100b) and the at least one groove (110).

5. The housing part (3a, 3b) according to any of the preceding claims, characterized in that: The groove (110) at least partially extends along a circular arc, and / or the at least one groove (110) is designed to extend at least partially around a center point of the annular recess (11).

6. The housing component according to claim 5, characterized in that: The arc spans a central angle of at least 45°, 90°, 120°, 135°, 160°, 180°, 225°, 270°, 315°, 350°, or 360°.

7. A housing component according to any preceding claim, characterised in that: The groove has a width (B) of 1 mm to 2 mm, preferably 1.4 mm to 1.6 mm, and / or a depth (T) of 0.5 mm to 1.0 mm, preferably 0.65 mm to 0.75 mm.

8. A housing component according to any preceding claim, characterised in that: The housing components (3a, 3b) have one, two or more ports (I, II) for applying pressure medium to the housing components.

9. The housing component according to claim 8, characterized in that: The at least one groove (110) is interrupted by one or more of the ports (I, II), and / or the at least one groove (110) on the first shell contact surface (12b) extends between the first edge (100b) of the shell part (3a, 3b) and the one or more ports (I, II), and preferably extends at least partially around the ports (I, II).

10. A housing component according to any preceding claim, characterised in that: The sealing means comprises a sealing compound or an elastomeric material, preferably a rubber O-ring.

11. Housing part (3a, 3b) according to any of the preceding claims, characterized in that: The housing parts (3a, 3b) are designed so that when the second end of the spring leaf (1a, 1b) is pressed against the second supporting surface (102), the housing parts (3a, 3b) are elastically deformed in the region of the clamping element and / or the second supporting surface (102), thereby causing the clamping surface (7) to transmit the clamping force and / or braking force to the object (5) to be clamped and / or braked.

12. Housing part (3a, 3b) according to any of the preceding claims, characterized in that: The shell component (3a, 3b) further comprises a second shell contact surface (12b) extending between the second support surface (102) and the second edge (100b) of the shell component (3a, 3b).

13. The housing component (3a, 3b) according to claim 12, characterized in that: The annular recess (11) defines an annular opening (12) for inserting the spring leaf (1a, 1b) into the housing parts (3a, 3b), wherein the annular opening (12) is formed between the first housing contact surface (12a) and the second housing contact surface (12b).

14. Housing part (3a, 3b) according to any of the preceding claims, characterized in that: The second supporting surface (102) and the clamping surface (7) are arranged on opposite side surfaces of the clamping element (8), preferably with a second shell contact surface (12b) arranged therebetween, and / or the clamping surface (7) is arranged at or on the second edge (100a).

15. Housing part (3a, 3b) according to any of the preceding claims, characterized in that: The distance between the second supporting surface (102) and the second edge (100a) or the clamping surface (7) is smaller than the distance between the first supporting surface (101) and the second edge (100a) or the clamping surface (7), and / or the distance between the first supporting surface (101) and the first edge (100b) is smaller than the distance between the second supporting surface (102) and the first edge (100b), and / or when the housing parts (3a, 3b) are installed in the clamping and / or braking device, the second edge (100a) of the housing parts (3a, 3b) is closer to the object (5) than the first edge (100b), and / or when the housing parts (3a, 3b) are installed in the clamping and / or braking device, the second housing contact surface (12b) of the housing parts (3a, 3b) is closer to the object (5) than the first housing contact surface (12a).

16. A housing part (3a, 3b) for a pneumatic clamping and / or braking device (10), the housing part (3a, 3b) comprising: a first edge (100b) of the shell part (3a, 3b) and a second edge (100a) of the shell part (3a, 3b) opposite to the first edge (100b); an annular recess (11), the annular recess (11) being arranged between the second edge (100a) and the first edge (100b) and used for clamping the annular spring sheet (1a, 1b) between a first supporting surface (101) of the housing part (3a, 3b) defined by the recess (11) and a second supporting surface (102) of the housing part (3a, 3b) defined by the recess (11); a clamping element (8), the clamping element (8) having a clamping surface (7), the clamping surface (7) being designed such that when the spring leaf (1a, 1b) is clamped in the recess (11) between the first supporting surface (101) and the second supporting surface (102), the first end of the spring leaf (1a, 1b) is supported on the first supporting surface (101), and the second end of the spring leaf (1a, 1b) is pressed against the second supporting surface (102), thereby transmitting a clamping force and / or a braking force to the object (5) to be clamped and / or braked; a first housing contact surface (12a), the first housing contact surface (12a) extending between the first edge (100b) and the first support surface (101); wherein at least one groove (110) is arranged on the first housing contact surface (12a) for accommodating a sealing device; The housing component (3a, 3b) has one, two or more ports (I, II) for applying pressure medium to the housing component; as well as in: The at least one groove (110) is interrupted by one or more of the ports (I, II) and / or The at least one groove (110) on the first shell contact surface (12b) extends between the first edge (100b) of the shell part (3a, 3b) and one or more of the ports (I, II), and preferably extends at least partially around the ports (I, II).

17. A clamping and / or braking device (10) for clamping and / or braking an object (5) to be clamped and / or braked, comprising: A housing (3), the housing (3) comprising a first housing part (3a) according to any of the preceding claims and a second housing part (3b) according to any of the preceding claims, wherein the two housing components (3a, 3b) are arranged relative to each other and fastened to each other so that the first housing contact surface (12a) of the first housing component (3a) faces the first housing contact surface (12a) of the second housing component (3b), and the recess (11) of the first housing component (3a) and the recess (11) of the second housing component (3b) together form an internal space (13) in the housing (3); wherein the sealing device is received in a corresponding groove (110) of each of the housing parts (3a, 3b); A spring (1), the spring (1) being arranged in the inner space (13), comprising a first annular spring sheet (1a) and a second annular spring sheet (1b), wherein the spring sheets (1a, 1b) are arranged in the inner space (13) so that at least one pressure space (2, 4) is formed in the inner space (13), the pressure space (2, 4) being at least partially delimited by the spring sheets (1a, 1b), wherein the pressure space (2, 4) can be filled or exhausted and can withstand an overpressure of a pressure medium applied to the housing (3), wherein the first spring sheet (1a) is clamped between the first supporting surface (101) of the first housing component (3a) and the second supporting surface (102) of the first housing component (3a); wherein the second spring sheet (1b) is clamped between the first supporting surface (101) of the second housing component (3b) and the second supporting surface (102) of the second housing component (3b); The spring sheet (1a, 1b) is arranged relative to the at least one pressure space (2, 4) so ​​that the bending of the at least one spring sheet (1a, 1b) changes by inflating or exhausting the pressure space (2, 4) or subjecting the pressure space (2, 4) to overpressure, thereby switching the device (10) between an open state in which the object (5) is spaced apart from the clamping surface (7) and a closed state in which one or more of the clamping surfaces (7) transmit a clamping force and / or a braking force to the object (5).

18. A clamping and / or braking device (10) for clamping and / or braking an object (5) to be clamped and / or braked, comprising: A housing (3), the housing (3) comprising a first housing component (3a) and a second housing component (3b); Wherein, each of the housing components (3a, 3b) comprises: a first edge (100b) of the shell part (3a, 3b) and a second edge (100a) of the shell part (3a, 3b) opposite to the first edge (100b); an annular recess (11), the annular recess (11) being arranged between the second edge (100a) and the first edge (100b) and used for clamping the annular spring sheet (1a, 1b) between a first supporting surface (101) of the housing part (3a, 3b) defined by the recess (11) and a second supporting surface (102) of the housing part (3a, 3b) defined by the recess (11); a clamping element (8), the clamping element (8) having a clamping surface (7), the clamping surface (7) being designed such that when the spring leaf (1a, 1b) is clamped in the recess (11) between the first supporting surface (101) and the second supporting surface (102), the first end of the spring leaf (1a, 1b) is supported on the first supporting surface (101), and the second end of the spring leaf (1a, 1b) is pressed against the second supporting surface (102), thereby transmitting a clamping force and / or a braking force to the object (5) to be clamped and / or braked; a first housing contact surface (12a), the first housing contact surface (12a) extending between the first edge (100b) and the first support surface (101), wherein the at least one groove (110) accommodating the sealing device is arranged on the first housing contact surface (12a); and wherein the two housing components (3a, 3b) are arranged relative to each other and fastened to each other so that the first housing contact surface (12a) of the first housing component (3a) faces the first housing contact surface (12a) of the second housing component (3b), and the recess (11) of the first housing component (3a) and the recess (11) of the second housing component (3b) together form an internal space (13) in the housing (3); A spring (1), the spring (1) being arranged in the inner space (13), comprising a first annular spring sheet (1a) and a second annular spring sheet (1b), wherein the spring sheets (1a, 1b) are arranged in the inner space (13) so that at least one pressure space (2, 4) is formed in the inner space (13), the pressure space (2, 4) being at least partially delimited by the spring sheets (1a, 1b), wherein the pressure space (2, 4) can be filled or exhausted and can withstand an overpressure of a pressure medium applied to the housing (3), wherein the first spring sheet (1a) is clamped between the first supporting surface (101) of the first housing component (3a) and the second supporting surface (102) of the first housing component (3a); wherein the second spring sheet (1b) is clamped between the first supporting surface (101) of the second housing component (3b) and the second supporting surface (102) of the second housing component (3b); The spring sheet (1a, 1b) is arranged relative to the at least one pressure space (2, 4) so ​​that the bending of the at least one spring sheet (1a, 1b) changes by inflating or exhausting the pressure space (2, 4) or subjecting the pressure space (2, 4) to overpressure, thereby switching the device (10) between an open state in which the object (5) is spaced apart from the clamping surface (7) and a closed state in which one or more of the clamping surfaces (7) transmit a clamping force and / or a braking force to the object (5).

19. The clamping and / or braking device (10) according to claim 17 or 18, wherein: The two housing parts (3a, 3b) are fastened to each other by one or more fastening means (17) arranged in the hole (15).

20. The clamping and / or braking device (10) according to claim 17, 18 or 19, wherein: The second housing contact surface (12b) of the first housing component (3a) faces the second housing contact surface (12b) of the second housing component (3b).

21. The clamping and / or braking device (10) according to any one of the preceding claims 17 to 20, wherein: The at least one pressure space comprises a first pressure space (4), which is arranged outside the spring (1) and between the at least one spring leaf (1a, 1b) and the housing (3).

22. The clamping and / or braking device (10) according to claim 21, wherein: The first spring leaf (1a) is designed to reduce the bending of the first spring leaf (1a) by inflating the first pressure space (4) or by subjecting the first pressure space (4) to overpressure, so that when the first end of the first spring leaf (1a) is supported on the first bearing surface (101) of the first housing part (3a), the second end of the first spring leaf (1a) is pressed against the second bearing surface (102) of the first housing part (3a), resulting in a clamping force and / or a braking force being transmitted from the clamping surface (7) of the clamping element (8) of the first housing part (3a) to the object (5) to be clamped and / or braked, and the device (10) changes from an open state to a closed state.

23. The clamping and / or braking device (10) according to claim 21 or 22, wherein: The second spring leaf (1b) is designed to reduce the bending of the second spring leaf (1b) by inflating the first pressure space (4) or by subjecting the first pressure space (2, 4) to overpressure, so that when the first end of the second spring leaf (1b) is supported on the first bearing surface (101) of the second housing part (3b), the second end of the second spring leaf (1b) is pressed against the second bearing surface (102) of the second housing part (3a), resulting in a clamping force and / or a braking force being transmitted from the clamping surface (7) of the clamping element (8) of the second housing part (3a) to the object (5) to be clamped and / or braked, and the device (10) changes from the open state to the closed state.

24. The clamping and / or braking device (10) according to claims 21 to 23, wherein: The device (10) is designed such that, by filling the first pressure space (4) or by subjecting the first pressure space (4) to an overpressure, the first bearing surface (101) and the second bearing surface (102) of at least one of the two housing parts (3a, 3b) move away from each other and / or the bending of at least one of the spring leaves (1a, 1b) is reduced, and as a result the device (10) changes from the open state to the closed state.

25. The clamping and / or braking device (10) according to any one of the preceding claims 17 to 24, wherein: The at least one pressure space comprises a second pressure space (2), wherein the second pressure space (2) is arranged between the two spring leaves (1a, 1b) within the spring (1), preferably, wherein the device (10) is designed such that by filling the second pressure space (2) or by subjecting the second pressure space (2) to an overpressure, the first bearing surface (101) and the second bearing surface (102) of at least one of the two housing parts (3a, 3b) move towards each other and / or the bending of the at least one of the spring leaves (1a, 1b) increases, and as a result the device (10) changes from the closed state to the open state.

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