Housing part for a clamping and / or braking device

Abstract

A housing portion of a clamping and / or braking device and a clamping and / or braking device having the housing portion are disclosed. The housing portion includes a first edge, a second edge, an annular recess, a clamping element, and a first housing contact surface. The second edge is opposite to the first edge. The annular recess is disposed between the second edge and the first edge for clamping an annular spring plate between a first bearing surface of the housing portion defined by the annular recess and a second bearing surface of the housing portion defined by the recess. The clamping element has a clamping surface configured to transmit clamping and / or braking force to an object to be clamped and / or braked when the spring plate is clamped in the recess between the first bearing surface and the second bearing surface in such a way that a first end of the spring plate rests on the first bearing surface and a second end of the spring plate presses against the second bearing surface. The first housing contact surface extends between the first edge and the first bearing surface. At least one groove is disposed on the first housing contact surface for accommodating a sealing means.

Description

Housing part of a clamping and / or braking device This case relates to a housing part of a clamping and / or braking device and a clamping and / or braking device having such a housing part. In the production of tools or machine parts, processing machines, especially working spindles or other machine tools, machine the workpiece material through tools fixed on the shaft to achieve the desired shape of the workpiece material. The shaft for fixing the tool can be the rotating shaft or pivot shaft of the processing machine. Through the workbench that can be rotated or pivoted due to the use of the shaft, the tool or workpiece can be placed in the appropriate processing position or the workpiece can be moved at a corresponding speed, and the prerequisite for precise and efficient machining is the high rotational speed of the shaft. Therefore, the task of the emergency or safety system is to stop the movement of the shaft in the event of a system failure or malfunction, for example, power failure, cable disconnection, or fixing the shaft in a fixed position. Common processing machines have electromagnetic, hydraulic or pneumatic clamping and / or braking devices. These devices have friction pads that can be frictionally connected to the shaft through force transmission. Therefore, the shaft can be fixed at different speeds. In traditional hydraulic clamping devices, their chambers are filled with hydraulic oil to clamp a rotating shaft or disk, such as a passive hydraulic chuck. However, the response time of such hydraulic chucks is long, and very high costs are required to shorten the response time of such hydraulic chucks. In addition, hydraulic materials, especially hydraulic valves and hydraulic pipes, are expensive and require a long assembly time, and the use of hydraulic oil increases additional costs for keeping the environment around the hydraulic chuck clean. In pneumatic clamping and / or braking devices, their elastic components, especially elastic plates, are usually filled with compressed air and can overcome the disadvantages of the above-mentioned hydraulic clamping devices. EP 1 585 616 B1 and EP 1 651 881 B1 describe a pneumatic clamping device having two annular spring plates. The two spring plates are introduced into the housing of the clamping device and form a pressure chamber therein. This pressure space can be filled with compressed air or can be inflated and deflated to change the bending of the spring plates, thereby changing between the closed state and the open state of the clamping device. In the closed state, the object to be clamped is clamped like a rotating shaft, and in the open state, the clamped object is released. However, in practical applications, it has been shown that the housing parts of the chuck are not sufficiently sealed relative to each other and relative to the surrounding environment and fail or cannot operate without faults. According to the prior art, the object of this case is to provide better sealing means for pneumatic clamping and / or braking devices. This object is achieved through a housing part having the features of claim 1 in the patent application scope and a clamping and / or braking device having the features of claims 17 and 18 in the patent application scope. Preferred embodiments are described in the dependent claims, the description and the drawings. In some embodiments, a housing part of a clamping and / or braking device. The housing part includes a first edge of the housing part, a second edge of the housing part, an annular recess, a clamping element, and a first housing contact surface. The second edge is opposite the first edge. The annular recess is provided between the second edge and the first edge for clamping an annular spring plate between a first load-bearing surface of the housing part defined by the annular recess and a second load-bearing surface of the housing part defined by the recess. The clamping element has a clamping surface arranged to transmit a clamping and / or braking force to an object to be clamped and / or braked when the spring plate is clamped in the recess between the first load-bearing surface and the second load-bearing surface in such a way that a first end of the spring plate is supported on the first load-bearing surface and a second end of the spring plate presses on the second load-bearing surface. The first housing contact surface extends between the first edge and the first load-bearing surface. At least one groove is provided in the first housing contact surface for accommodating sealing means. In some embodiments, the distance between the second load-bearing surface and the second edge or the clamping surface is less than the distance between the first load-bearing surface and the second edge or the clamping surface. The second edge can be an edge of the housing part, the clamping surface is arranged on or at the edge, or in the state of being installed in the clamping and / or braking device, the edge is closer to the object to be clamped or braked and may contact the object in the closed state. In some embodiments, the distance between the first load-bearing surface and the first edge is less than the distance between the second load-bearing surface and the first edge. The first edge can be an edge of the housing, and in the state of being installed in the clamping and / or braking device, the edge faces away from the object to be clamped or braked or is farther from the object than the second edge. A hole for fastening the housing part to another housing part to form the clamping and / or braking device can be provided along the first edge. In some embodiments, a clamping and / or braking device for clamping and / or braking an object to be clamped and / or braked. The device includes a housing and a spring. The housing includes a first housing part and a second housing part. The first housing part and the second housing part are arranged relative to each other and fixed to each other such that the first housing contact surface of the first housing part faces the first housing contact surface of the second housing part, and the recess of the first housing part and the recess of the second housing part together form an internal space within the housing. The spring is disposed in the internal space and includes a first spring plate in the shape of a ring and a second spring plate in the shape of a ring. The spring plates are disposed within the internal space such that at least one pressure space is formed in the internal space, at least a portion of the pressure space is bounded by the spring plates, the pressure space is air inlet or air exhaustable, and can withstand the overpressure of the pressure medium supplied to the housing. The first spring plate is clamped between the first bearing surface of the first housing part and the second bearing surface of the first housing part. The second spring plate is clamped between the first bearing surface of the second housing part and the second bearing surface of the second housing part. The spring plates are disposed relative to at least one pressure space such that the bending of at least one spring plate can be changed by introducing air into or exhausting air from the pressure space or subjecting the pressure space to overpressure, thereby causing the device to change between an open state and a closed state. In the open state, the object is spaced apart from the clamping surface. In the closed state, one or more clamping surfaces transmit clamping and / or braking forces to the object. In this case, when the housing parts are fastened to each other, individual sealing means (i.e., a total of at least two sealing means for each housing of the clamping and / or braking device) can be present in each housing part, or a single sealing means can be received in a groove of the housing part. The operational problems of the clamping and / or braking device that are prone to occur due to leakage between the housing parts and relative to the surrounding environment can be overcome by aspects of the present application. The following findings of the inventors are based on this disclosure. In the past, a large amount of sealant was locally applied between the housing parts of the fixture in order to create a seal between the housing parts and relative to the surrounding environment. However, locally applied sealant is prone to failure, for example because it is not applied evenly where it is needed or where it is not applied. The inventors have recognized that inserting a groove in the first housing contact surface, the groove being for the housing part to contact another housing part and extending between the first edge and the first bearing surface of the housing part, results in fewer failures. For example, a sealant (e.g., an adhesive and a sealing material) or an elastic material (e.g., an O-ring), since the position of the sealing means that can be accommodated by the groove is defined by the groove, the sealing means can be more reliably attached and a reliable seal is formed between the housing parts and relative to the housing parts. In particular, an improved seal of the pressure space that is prone to leakage between each spring plate and the associated housing part is achieved through the groove. Generally speaking, the groove on the first housing contact surface reduces the sensitivity to failure and increases the operating time of the fixture. In this way, the amount of sealing means (e.g., sealant, e.g., adhesive and sealing material) required to reliably seal so far can also be reduced, reducing costs and being beneficial to the environment. In this case, attaching the groove to the first housing contact surface has no negative impact on the power for opening and closing the clamping and / or braking device. In some embodiments, the width of the groove is 1 mm to 2 mm, 1.4 mm to 1.6 mm or about 1.5 mm. Alternatively or additionally, the depth of the groove is 0.5 mm to 1.0 mm, 0.65 mm to 0.75 mm or about 0.7 mm. Given the numerical part of the groove, a preferred range or preferred volume of the sealing means to be accommodated is thereby defined, and thus the possibility of applying too little or too much sealing means is reduced. In some embodiments, the cross-sectional shape of the groove can be V-shaped, a rectangle with one side open, U-shaped or semi-circular. These shapes are preferred for the accommodation and installation of the sealing means. The groove can also be other shapes. In some embodiments, at least one groove extends at least partially along an arc and / or at least one groove is designed to extend at least partially around the center point of an annular recess, the arc spanning a central angle of at least 45°, 90°, 120°, 135°, 160°, 180°, 225°, 270°, 315°, 350° or 360°. This groove can have an approximately circular or annular configuration. The groove extends at least partially around the first edge. As a result, the groove promotes as uniform or even symmetric a seal as possible at least in part of the first edge, which is beneficial for longer operation of the fixture. In some embodiments, the first housing contact surface further includes one or a plurality of holes for fastening the housing part to another housing part by fastening means, and at least one groove on the first housing contact surface extends between the hole and the first bearing surface, and the hole on the first housing contact surface is provided between the first edge and the at least one groove. That is to say, from the perspective of the object to be clamped or braked, the hole is located outside the groove, so the hole and the fastening means attached thereto will not have a negative impact on the sealing between the housing parts and the sealing relative to the housing parts. Thus, the sealing performance is increased and the possibility of failure is reduced. In some embodiments, the housing part has one, two or a plurality of ports for applying a pressure medium (e.g., compressed air) to the housing part (especially one or more pressure spaces). In this case, at least one groove is preferably interrupted by one or more ports. As a result, the gap for the port follows a part of the groove, and another part of the next groove after being interrupted by the port then follows again. Alternatively or additionally, at least one groove on the first housing contact surface extends between the first edge of the housing part and one or more (other) ports, and preferably extends at least partially around the port. Thus, the sealing performance is additionally enhanced because the groove is guided to the port and may even extend at least partially around the port, so that the sealing means located in the groove seals the port relative to the first edge of the housing part and thus relative to the surrounding environment. The sensitivity to failure is reduced by reducing the leakage in the port area. Through the devices described individually and in combination, a clamp that can be reliably sealed between the housing parts and relative to the surrounding environment can be provided without adversely affecting the power for opening and closing the clamp. If the brief description describes features not listed in the claims, these features do not constitute essential features and do not necessarily have to be included in the claims, but these features are preferred implementations that are particularly prominent for the claimed subject matter, can be combined with each claim, and can also be combined with each other as needed. This case relates to a housing part for a clamping and / or braking device and a clamping and / or braking device having the housing part of this case. It should be noted that if the device "clamping", "clamping device", "clamping force" or "clamping" process is mentioned in this document, the device "braking", "braking device", "braking force" or "braking" process is also included. Figures 1A to 5A show cross-sectional views of a clamping device 10 according to the present application. The clamping device 10 includes a housing 3. The housing 3 includes two housing parts 3a, 3b according to the present application and a spring 1. The spring 1 is disposed in the housing 3 and includes at least two elastic elements 1a, 1b. In one embodiment, the elastic elements 1a, 1b are spring plates 1a, 1b in the shape of a ring. The clamping device 10 according to the present application includes a housing 3. The housing 3 includes a first housing part 3a and a second housing part 3b according to the present application. The housing parts 3a, 3b according to the present application include the aforementioned means. Specifically, the second edge 100a of the housing parts 3a, 3b is opposite to the first edge 100b of the housing parts 3a, 3b; an annular notch 11 is provided between the second edge 100a and the first edge 100b for clamping annular spring plates 1a, 1b between a first bearing surface 101 and a second bearing surface 102 of the housing parts 3a, 3b defined by the annular notch 11; a clamping element 8 having a clamping surface 7 which, when the spring plates 1a, 1b are clamped in the notch 11 between the first bearing surface 101 and the second bearing surface 102, is designed such that the first ends of the spring plates 1a, 1b are supported on the first bearing surface 101 and the second ends of the spring plates 1a, 1b press on the second bearing surface 102 to transmit the clamping and / or braking force to an object 5 to be clamped and / or braked; a first housing contact surface 12a extends between the first edge 100b and the first bearing surface 101; at least one groove 110 is provided or inserted in the first housing contact surface 12a for accommodating sealing means. The detailed structure of the aforementioned device will be explained in the following content in conjunction with FIGS. 5, 6 and 8. As shown in FIGS. 1A to 5A, the two housing parts 3a, 3b of the clamping device 10 according to the present application are arranged relative to each other and fixed to each other such 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 recesses 11 of the first housing part 3a and the second housing part 3b together form an internal space 13 within the housing 3. The clamping device 10 further includes a spring 1 disposed in the internal space 13 and including an annular first spring plate 1a and an annular second spring plate 1b. The spring plates 1a, 1b are disposed within the internal space 13 such that at least one pressure space 2, 4 is formed in the internal space 13, and at least part of the pressure space is restricted by the spring plates 1a, 1b. The pressure spaces 2, 4 are air inlet or exhaustable and can withstand the overpressure of the pressure medium supplied to the housing 3. The first spring plate 1a is clamped between the first contact surface 101 and the second contact surface 102 of the first housing part 3a; the second spring plate 1b is clamped between the first contact surface 101 and the second contact surface 102 of the second housing part 3b; the spring plates 1a, 1b are disposed relative to at least one pressure space 2, 4 such that the bending of at least one of the spring plates 1a, 1b can be changed by air inlet or exhaust of the pressure space 2, 4 or by making the pressure space 2, 4 withstand overpressure, thereby changing the device 10 between an open state and a closed state. In the open state, the object 5 is spaced apart from the clamping surface 7, and in the closed state, one or more clamping surfaces 7 transmit clamping and / or braking forces to the object 5. As shown in FIGS. 1A, 1B, 4A, and 4B, in the closed state of the clamping device 10, the clamping surface 7 of the clamping element 8 contacts the circumference of the object 5. The clamping element 8 can also be referred to as a clamping lip. The clamping element 8 can be formed as a single part with other components of the housing parts 3a, 3b, or can also be a separate part from other components of the housing parts 3a, 3b. The clamping force or action of the clamping surface 7 on the object 5 to be clamped occurs on a clamping plane spanned by two vectors, and each vector is formed as the radius of the annular elastic elements 1a, 1b or the annular recess 11 (see FIG. 5A). The axis 9 can extend through the center point of the aforementioned annular part and is referred to as the main axis of the clamping device 10 that can extend perpendicular to the clamping plane. If the terms "inner / inner" and "outer / outer" housing contact surfaces, bearing surfaces, edges or ends are mentioned herein, the inner housing contact surface, bearing surface, edge or end can be closer to the axis 9 than the corresponding outer housing contact surface, bearing surface, edge or end. This also applies to other components. The terms "inner / inner(r)" and "outer / outer(r)" can have other meanings. The clamping device 10 may have a structure that rotates about the aforementioned main axis 9 and is symmetric. The main axis 9 may extend approximately or precisely and centrally through the opening (opening 14 in Figure 5B) of the clamping device 10. As shown in Figures 1A and 4A, the object 5 to be clamped, such as a rotatable shaft of a machine or a workbench, is placed within the opening 14, and the clamping force of the clamping device is radially inward toward the main axis 9 (perpendicular to the main axis 9) within the clamping plane. As shown in Figures 1B, 2B, 3B, and 4B, the object 5 to be clamped is placed outside the clamping device 10, and the clamping force of the clamping device is radially outward away from the main axis 9 (perpendicular to the main axis 9) within the clamping plane. As shown in Figures 1A, 2A, 3A, and 4A, the clamping element 8 is located between the spring 1 and the opening 14 or the main axis 9. In contrast, as shown in Figures 1B, 2B, 3B, and 4B, the object 5 to be clamped at least partially surrounds the clamping device 10, such that the clamping element 8 is located between the object 5 and the opening 14 or the main axis 9. As shown in Figures 1B, 2B, 3B, and 4B, a component that at least partially fills the opening 14 and is penetrated by the main axis 9 may be guided into the opening 14 in place of the object 5 to be clamped. As shown in Figures 1A to 5A, in each illustration, the spring 1 is clamped between two bearing surfaces (the first bearing surface 101 and the second bearing surface 102 in Figures 5C and 5D) within the housing 3 of the clamping device 10 and extends between the two bearing surfaces. As shown in Figures 1A to 2B, in the device 10 in the unpressurized initial state, the spring 1 may be slightly bent so as to be firmly fixed to the housing 3 in this state, and the same applies to any other state of the device 10. The degree of bending of the spring 1 depends on the state of the device 10. If the device 10 is in a state where the spring 1 is bent (for example, more bent than in the unpressurized initial state, for example, the open state), exhausting the second (for example, internal) pressure space 2 of the spring 1 and admitting air into the first (for example, external) pressure space 4 will cause the spring 1 to at least partially relax. When the spring 1 presses against the radial bearing surfaces, it will cause a slight increase in the distance between the radial bearing surfaces, thereby causing the housing 3 to elastically deform in the region of the clamping element 8 or the clamping surface 7, and the clamping surface 7 will thus contact the object 5 and press against the object 5 with a (predetermined) clamping force in order to firmly clamp the object 5. As shown in Figures 1A and 1B, the object 5 is firmly clamped, and the clamping device 10 is in the closed state. In the closed state of the device 10, even if the spring 1 is partially relaxed, it may still be slightly bent so as to be firmly fixed within the housing 3 in this state. In this case, the clamping element 8 can be an elastic element, such as a spring fork, which moves in the pressureless initial state of the device 10 by the spring force of the (slightly) bent spring 1 from an initial position (e.g., the elastic element is relaxed) into a support position (e.g., by bending of the spring fork 8) until a balance occurs between the restoring force of the elastic element 8 and the elasticity of the spring 1. In this equilibrium state, the clamping surface 7 can bear against the object 5. By additionally applying compressed air (e.g., 4 bar or 6 bar) to the first pressure space 4 in the closed state, there is an optional possibility of increasing the clamping force by a predetermined value. As shown in FIGS. 1A and 1B, this is represented here by an optional additional compressed air pump (booster) 6 and the hatched area (compressed air) in the first pressure space 4. The pressure space 4 (the "outer pressure space 4") provided on the outside (upper side or lower side) of the spring plate can be connected to the air port I (also referred to as the "closed port") through an opening in the housing 3, and the compressed air pump 6 can be connected to this air port I. As a result, for example, the operation of the device 10 can change between the braking movement of the object 5 being held (in the pressureless state) and the complete clamping of the object (in the case of sufficient pressure application). Even if two pressure spaces 2, 4 have been described by way of example, the clamping device 10 can also be operated with a single pressure space, and the single pressure chamber can be, for example, the pressure space 2 (the "inner pressure space 2") provided between the spring plates (inside the spring plates) or the outer pressure space 4. FIGS. 2A and 2B show the clamping device 10 of FIGS. 1A and 1B in an open state in each illustration, where the clamping surface 7 does not contact the circumference of the object 5 or is spaced apart from the circumference of the object 5. The inner pressure space 2 can be connected to the air port II (also referred to as the "open port") through an opening in the housing 3, and the compressed air pump 6 can be connected to this air port II. By applying compressed air (e.g., 4 bar or 6 bar) to the second (e.g., inner) pressure space 2 by the compressed air pump 6 and exhausting the first (e.g., outer) pressure space 4, compared to the closed state of FIGS. 1A and 1B, the spring 1 is bent (bulged) or supported more strongly, and the distance between the spring 1 or the two bearing surfaces is radially shortened. The clamping surface 7 disengages from the object 5 to release the clamping. The object 5 can move freely (e.g., rotate about the axis 9 or move linearly along the axis 9) and the clamping device 10 is open. In this way, it is possible to change back and forth between the closed state and the open state of the device 10. Compared with hydraulic clamps, such pneumatic clamps 10 have many advantages. By using a combination of elastic components, in this case, spring 1 together with elastic elements 1a, 1b and compressed air, enables a very short response time and a firm clamping of object 5, for example when switching between the open and closed states. Spring 1 preferably can have a plate-like structure, as shown in more detail in Fig. 5, where two elastic elements 1a, 1b stacked one on top of the other form spring 1 and an internal pressure space 2 of spring 1 located between plates 1a, 1b. Plates 1a, 1b can also be annular, as shown in Fig. 5, and can optionally additionally have radial grooves such that the inner diameter can be changed with a particularly small force. The elastic elements 1a, 1b can be coated with rubber at least in the area of the grooves in order to produce the required sealing for the compressed air. The elastic elements 1a, 1b generally have a pressure-resistant and elastically bendable form and are arranged in the housing 3 of the clamping device 10 in such a way that an internal pressure space 2 is formed between the elastic elements 1a, 1b within spring 1 and an external pressure space 4 is formed between each elastic element 1a, 1b and the housing 3 of the clamping device 10 or housing parts 3a, 3b. Fig. 5 shows a perspective view of the clamping device 10 similar to Fig. 1A and Fig. 2A. By introducing or applying compressed air to the first (e.g., external) pressure space 4 and exhausting the second (e.g., internal) pressure space 2, as shown in Fig. 1A, spring 1 relaxes at least partially and generates a clamping force on the object 5 to be clamped, particularly on the circumference of shaft 5. As a result, in the event of an energy or pressure failure, object 5 is clamped or shaft 5 immediately stops and provides a secure clamping. Depending on the size, this pneumatic clamp 10 can achieve holding torques of several hundred Nm and up to several thousand Nm, and this holding torque can be further increased by additionally applying compressed air to the first (e.g., external) pressure space 4, as shown in Fig. 1A by a pressure pump 6 (booster). Here, compressed air of a few bar (e.g., 4 bar or 6 bar) is sufficient to provide a plurality of holding torques without a booster. In this case, as an example, when switching between the open and closed states of the clamp 10, a small lateral bending (perpendicular to its longitudinal axis) of plates 1a, 1b generates a large spring force, which can be used for clamping or releasing the pre-stressed clamping device 10. Thus, a firm clamping and release of the fast-rotating machine shaft 5 can be achieved. In the case of pneumatic materials, compared with hydraulic materials, the costs and assembly expenses are also lower, and the use of compressed air does not result in any additional costs for cleaning the device. This pneumatic clamp can also achieve a small overall size because a small lateral bending, a small spring longitudinal range (variation), and a small pressure space volume are sufficient to provide the required clamping force. In the case of pneumatic clamps, in principle, a distinction is made between a passive clamping device 10 (as shown in Figs. 1A to 2B) and an active clamping device 10 (as shown in Figs. 3A to 4B). In the pressureless initial state, the spring 1 can be bent to different degrees (laterally) and thus radially shortened to different degrees. The inside of the housing 3 can adapt to the bending of the elastic elements 1a, 1b or can define said bending. The corresponding stop surfaces 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 form (for example, a recess) corresponding to the bending part (for example, a convex part) of the elastic elements 1a, 1b. In the passive clamping device 10, in the pressureless initial state, the spring 1 is usually slightly elastically bent (for example, convexly) or prestressed, and the clamping device 10 can be in a closed state (Figs. 1A, 1B). The clamping device 10 is opened only by applying force from the inside by applying compressed air to the second (for example, inner) pressure space 2 (Figs. 2A, 2B). In most cases, the spring 1 is slightly bent in the pressureless initial state. As a result, in the case of clamping or 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 to clamp the object 5. In the active clamping device 10, in the pressureless initial state (Figs. 3A, 3B), the spring 1 is bent more strongly laterally outwards than in the case of the passive clamping device, especially more strongly convexly. As a result, the distance between the two radial bearing surfaces is shortened and the clamping device 10 is opened. No clamping force is generated on the object 5 through the clamping surface 7. Since the clamping surface 7 does not contact the object 5 or is spaced apart from the object 5, the object is released. Through the plastic deformation of the spring plates 1a, 1b, in the case of the same housing 3, the spring 1 can be bent more strongly laterally outwards in the pressureless initial state and radially shortened more strongly than in the case of the passive clamping device. The smaller radial extension of the spring plates 1a, 1b in the pressureless initial state can cause the clamping device 10 to be in an open state in the pressureless initial state. Even in the case of plastic deformation, the spring plates 1a, 1b are elastically bent and press against the bearing surfaces, thereby fixing the spring in the housing. The internal space of the housing or the recess can accommodate the stronger curvature brought about by the plastic deformation in the initial state. As shown in Figs. 4A and 4B, now it is necessary to actively generate a clamping force from the outside in order to change the clamp to a closed state. Here, compressed air is introduced into the first (for example, outer) pressure space 4 through the compressed air pump 6, so that the compressed air is applied to the spring 1 from the outside, causing the spring 1 to actively relax, reducing the curvature of the spring 1, increasing the distance between the two bearing surfaces, and the housing 3 elastically deforming in the area of the clamping element 8 or the clamping surface 7, so that the clamping surface 7 contacts the object 5, generating a clamping force on the object 5, thereby clamping and fixing the object 5. The active clamping device 10 is then in a closed state. Therefore, depending on the application area and the safety regulations in place, an active or passive clamping system 10 is used. If safety clamping is primarily required, a passive clamping device is typically used. With this pneumatic passive clamping system, even in a pressureless state, a predefined clamping force acting on the object 5 to be clamped can be generated during the corresponding assembly of the device in the overall device. Due to the application of overpressure or negative pressure, the force transmitted to this object can be increased, decreased, or completely eliminated, thus inspiring a variety of applications. In contrast, if intentional operations such as tool change are primarily carried out through the clamping device, an active clamping device is typically used. Figure 5A shows a three-dimensional sectional view of the pneumatic clamping device 10 according to the present application. Here, by way of example, the device 10 with the clamping force directed inward according to Figures 1A, 2A, 3A, and 4A is shown. Figures 5B to 8 show further details of this device 10. However, the content shown for the device in Figures 5A to 8 applies correspondingly to the device 10 with the clamping force directed outward according to Figures 1B, 2B, 3B, and 4B. As shown in Figure 5A, the housing 3 of the clamping device 10 according to the present application includes two housing parts 3a, 3b according to the present application, each having a groove (not shown here) (see 110 in Figure 6) in each example. The housing parts 3a, 3b are fastened to each other by fastening means 17, such as screws, and through holes 15, and are installed in such a way that in the installed state, the grooves of the housing parts coincide with each other, and the two housing parts 3a, 3b define an internal space 13 between the housing parts 3a, 3b within the housing 3. In this internal space, a spring 1 and its annular spring plates 1a, 1b are provided. As shown in Figures 5A to 5D, each of the housing parts 3a, 3b defines a recess 11, which is also annular and is used to accommodate the annular spring plates 1a, 1b. At least a part of the first bearing surface 101 of the housing part can (substantially) extend perpendicular to the radial direction R of the annular recess 11 and / or a part of the second bearing surface 102 of the housing part can (substantially perpendicular) extend along the radial direction R of the annular recess 11. An opening 14 (Figure 5B) extends through the center of the housing 3, and an object 5 to be clamped, such as a shaft, can be introduced into this opening 14 (Figure 5B). The housing can extend around the opening by 360° and at least partially surround the object 5 in at least one plane called the clamping plane. The central main axis 9 of the clamping device extends centrally through the opening 14 and is perpendicular to the clamping plane. In the clamping device according to Figures 1A, 2A, 3A, 4A, and 5A, the main axis 9 extends centrally along the longitudinal axis of the shaft through the shaft. One or more clamping surfaces 7 are positioned along the circumference of the housing 3 or the opening 14. In the case where the housing 3 undergoes elastic deformation in the region of the clamping element 8 or the clamping surface 7, the object 5 can be clamped by applying a circumferential clamping force to 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 preferable that the clamping force is symmetrically distributed along the clamping surface 7 or along the circumference of the object 5. An asymmetrical distribution of the clamping force may cause damage to the object 5. Preferably, one or both of the adjacent surfaces 101, 102 have a circular structure in the clamping plane. Preferably, the clamping surface 7 has a circular structure in the clamping plane. The clamping element 8 can have an annular structure. Here, all the annular or circular components described can have, individually or in combination, the intersection point of the main axis 9 and the clamping plane (for example, the center point of the opening 14) as the center point. Figures 5B to 5D show embodiments of the housing part of the present application (here the upper housing part 3a from Figure 5A). The housing parts 3a, 3b according to the invention include the devices mentioned at the beginning, namely the second edge 100a (this is the inner edge) of the housing parts 3a, 3b and the first edge 100b (this is the outer edge) of the housing parts 3a, 3b, and these edges are arranged opposite to each other; an annular recess 11 is provided between the second edge 100a and the first edge 100b for clamping the annular spring plates 1a, 1b between the first bearing surface 101 (here the outer bearing surface) of the housing parts 3a, 3b defined by the recess 11 and the second bearing surface 102 (here the inner bearing surface) of the housing parts 3a, 3b defined by the recess 11; a clamping element 8 having a clamping surface 7, and when the spring plates 1a, 1b are clamped in the recess 11 between the first bearing surface 101 and the second bearing surface 102, the clamping element 8 is designed such that the first end of the spring plates 1a, 1b supports on the first bearing surface 101 and the second end of the spring plates 1a, 1b presses on the second bearing surface 102 to transmit the clamping and / or braking force to the object 5 to be clamped and / or braked (refer to Figures 5A and 5B, the object 5 is at the opening 14); a first housing contact surface 12a (this is the outer housing contact surface) which extends between the first edge 100b and the first bearing surface 101; at least one groove 110 is provided or inserted on the first housing contact surface 12a for accommodating the sealing means. Preferably, the cross-sectional shape of the groove 110 formed along the radial direction R can be V (V-shaped, the opening of the V faces the surface 12a direction), a rectangle with an opening towards the surface 12a side, U (U-shaped, the opening of the U faces the surface 12a direction) or semi-circular. The housing parts 3a, 3b can include a second housing contact surface 12b (this is the inner housing contact surface) which extends between the second bearing surface 102 and the second edge 100b. The housing parts 3a, 3b extend between a second edge 100a and a first edge 100b, with the second edge 100a being closer to the axis 9 here and the first edge 100b being farther from the axis 9 here, and preferably having an annular structure. The housing part 3a includes an annular recess 11 for clamping the annular spring plate 1a, and the housing part 3a has an inner surface defined by the recess 11 (see 105 in FIG. 6). The annular recess 11 preferably defines an annular opening 12 in the housing part, and the annular opening is formed between a first (e.g., annular) housing contact surface 12a and a second (e.g., annular) housing contact surface 12b of the housing part. When the spring plate 1a having a first upper side surface facing the inner surface 105 (see 16c in FIG. 5B) is introduced through the opening 12 into the recess 11 and clamped in the recess 11, a first pressure space 4 is formed between the inner surface 105 and the spring plate 1a. As shown in FIGS. 5C and 5D, the spring plate 1a of the shown spring 1 extends from a first bearing surface 101 within the housing part 3a to a second bearing surface 102 within the housing part 3a and can contact the latter. In this case, when observed from the center point of the opening 14, the first bearing surface 101 is arranged to be more radially outward than the second bearing surface 102. FIG. 5C shows a cross-section of the housing part 3a in FIG. 5B, where the upper plate 1a of the spring 1 abuts and preferably contacts the first bearing surface 101. FIG. 5D shows a cross-section of the housing part 3a in FIG. 5B, where the upper plate 1a of the spring 1 abuts and preferably contacts the second bearing surface 102. However, in each of the illustrated examples, one or more additional components can also be radially positioned between the spring plate 1a and one or more bearing surfaces 101, 102, and the spring plate 1a applies its spring force to the bearing surfaces 101, 102 through this additional component. As shown in FIGS. 5B to 5D, the spring plate 1a is clamped in the recess 11 between the bearing surfaces 101, 102 of the housing part 3a. During the assembly along the bearing surfaces 101, 102 of the housing part 3a, each plate of the spring 1 passes through the opening 12 in the direction of the main axis 9 of the clamping device 10 into the recess 11 of the corresponding associated housing part until the corresponding plate abuts against the stoppers 112, 122 at each end of the two bearing surfaces 101, 102 and can no longer be further inserted into the groove 11. Since the extension range of the spring plate 1a in the clamping plane or in the radial direction of the annular recess can be greater than the extension range of the internal space defined by the housing part, the plate 1a can be bent or prestressed in the non-pressurized initial state. The spring plate 1a can be coated (e.g., vulcanized) with an elastic sealing material, preferably rubber or other suitable materials. FIG. 6 shows more details of the housing part 3a according to the present application in FIG. 5B. In FIG. 6, in addition to the recess 11, the first bearing surface 101 and the second bearing surface 102, there are also grooves 101 and other optional means, such as the inner surface 105, holes 15, inclined surfaces 103, 104 and notches 106. The housing parts 3a, 3b include an annular recess 11 for clamping the annular spring plates 1a, 1b. The recess 11 may form a first annular edge on the first housing contact surface 12a of the annular opening 12 of the housing parts 3a, 3b and a second annular edge on the second housing contact surface 12b. The annular recess 11 defines the inner surface 105 of the housing parts 3a, 3b between the first annular edge and the second annular edge. The inner surface 105 forms a first inclined surface 103 (or long chamfer) in the region of the first annular edge and a second inclined surface 104 (or long chamfer) in the region of the second annular edge. The inclined surfaces 103, 104 are oriented such that the annular opening 12 expands towards the first annular edge and the second annular edge or the corresponding housing contact surfaces (see 12a, 12b in FIG. 6). When the spring plates 1a, 1b with the first side surface 16c facing the inner surface 105 are clamped in the recess 11, the coating of the spring plates 1a, 1b will produce a better sealing contact with at least a first part inside the housing parts 3a, 3b. The first part may include the bearing surfaces 101, 102, inclined surfaces 103, 104 and / or other parts of the inner surface 105. The notch 106 facilitates the power of the clamping element 8 to be further bent. The inner surface 105 may include a first bearing surface 101 and a second bearing surface 102, which are formed to clamp the spring plates 1a, 1b therebetween. The first inclined surface 103 is provided between the first bearing surface 101 and the first annular edge of the surface 12a, and the second inclined surface 104 is provided between the second bearing surface 102 and the second annular edge of the surface 12a. When the spring plates 1a, 1b with the first side surface 16c facing the inner surface 105 are clamped in the recess 11, the coating of the plates 1a, 1b may preferably make a sealing contact with the inclined surfaces 103, 104. As shown in FIG. 6, the first bearing surface 101 may form or merge into the first inclined surface 103 (or long chamfer) and / or the second bearing surface 102 may form or merge into the second inclined surface 104 (or long chamfer). The inclined surfaces 103, 104 are each preferably oriented such that the annular opening 12 or the recess 11 expands towards the first edge and the second edge of the surfaces 12a, 12b (see FIGS. 6 and 5B). The housing parts 3a, 3b preferably have circular grooves or recesses 110 for accommodating sealing means (such as a sealing compound or a rubber O-ring) on the first housing contact surface 12a. The groove or recesses 110 can partially or preferably completely surround the housing parts 3a, 3b on the first housing contact surface 12a and extend along (e.g., parallel to) the first edge 100b of the housing part between the first edge 100b of the housing part and the first bearing surface 101 or the recess 11. Alternatively or additionally, the groove or recesses 110 can partially or preferably completely surround the housing parts 3a, 3b and extend along the circumference of the housing part in the region of the surface 12b, or between the second edge 100a of the housing part and the second bearing surface 102 or the recess 11. As shown in the example of FIG. 6, the first housing contact surface 12a can further have one or a plurality of holes 15 for fastening the housing part 3a to another housing part 3b (see FIG. 5B) by fastening means 17. The groove 110 can extend on the first housing contact surface 12a between the hole 15 and the first bearing surface 101. The hole 15 is provided on the first housing contact surface 12a between the first edge 100b and the groove 110. The groove 110 can have a width B of 1 mm to 2 mm, 1.4 mm to 1.6 mm, or 1.5 mm. The groove can 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 for accommodating and specifically and precisely attaching the required amount of sealing means (such as O-rings, adhesives, and sealing materials, etc.). Thereby, the consumption of the sealing means is reduced. One advantage of the groove 110 is that it realizes a sealing function, which is important for the operation during the closing operation of millions of additional air (booster) switching processes, enabling the sealing means (adhesives and sealing materials) to be applied between the housing halves in a targeted manner to reduce consumption. Due to the change in the pitch diameter of the connecting screws, the groove can be introduced circumferentially between the open port and the closed port. FIG. 7 shows an embodiment of the spring plates 1a, 1b with a first port seal 30 and / or a second port seal 20. The seals 20, 20 can be made of an elastic sealing material (such as rubber) and can be part of an elastic sealing coating (such as a rubber coating) of the spring plate, which is, for example, vulcanized to the spring plate. The first port seal 30 and the second port seal 20 can be arranged on opposite parts of the second edge 100a or the first edge 100b of the annular spring plate. The first port seal 30 can be arranged at least partially radially inwards or outwards relative to the second edge 100a and / or the first edge 100b of the spring plates 1a, 1b (see FIG. 7). The first port seal 30 can project radially beyond the second edge 100a or the first edge 100b (see FIG. 7). The second port seal 20 can be arranged at least partially radially inwards or outwards relative to the second edge 100a and / or the first edge 100b of the spring plates 1a, 1b (see FIG. 7). The second port seal 20 can project radially beyond the second edge 100a or the first edge 100b (see FIG. 7). The spring plates 1a, 1b according to FIG. 7 can be clamped between the housing parts 3a, 3b according to FIGS. 5B, 6 and 8. In this case, the elastic elements 1a, 1b are clamped in the recess 11 between the second edge 100a (or the clamping element 8 with the clamping surface 7 or the second housing contact surface 12b) and the first edge 100b (or the first housing contact surface 12a) such that the first port seal 30 contacts the region of the first port I of the housing parts 3a, 3b to apply a pressure medium to the housing parts, and the second port seal 20 contacts the region of the second port II of the housing parts 3a, 3b to apply a pressure medium to the housing parts (see FIGS. 7 and 8). This operation is carried out twice, and as a result, two housing parts 3a, 3b each clamping the spring plates 1a, 1b are prepared, and then they are fastened to each other to form the housing 3 as shown in FIG. 5A. The groove 110 extends on the first housing contact surface 12a and can be designed to extend at least partially around the object 5 (see FIG. 5A). The groove 110 can extend at least partially along an arc. The arc can span a central angle of at least 45°, 90°, 120°, 135°, 160°, 180°, 225°, 270°, 315°, 350° or 360°. As shown in FIG. 8, the central angle is 360° because the groove 110 extends completely around the center point of the opening 14. However, the groove 110 can be interrupted by one or more of the ports I, II, and / or as shown in FIG. 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 extends at least partially around the port. Each of these alternative possibilities and combinations additionally increases the sealing because the groove 110 is guided to the ports I, II and may even extend partially around the ports such that the sealing means located in the groove 110 seals the ports I, II relative to the first edge 100b of the housing part and relative to the surrounding environment. Thus, the sensitivity to failure is reduced by reducing the leakage in the regions of the ports I, II. In FIGS. 5 to 8, sealing means (such as rubber rings, O-rings made of rubber) can be accommodated in the grooves (see 110) of each housing part 3a, 3b. In this case, each individual sealing means (that is, there are at least two sealing means in total for each housing 3 of the clamping and / or braking device 10) can be present in each of the housing parts 3a, 3b, or when the housing parts 3a, 3b are fastened to another housing part 3a, 3b, a single sealing means can be accommodated in the grooves of the housing parts 3a, 3b. As described above, FIGS. 5 to 8 show the components of the device 10 with inward clamping force according to FIGS. 1A, 2A, 3A and 4A. 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. Compared with the first bearing surface 101, the second bearing surface 102 is located more inward. However, the content shown for the devices in FIGS. 5A to 8 applies correspondingly to the device 10 with outward clamping force according to FIGS. 1B, 2B, 3B and 4B. 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. Then, compared with the first bearing surface 101, the second bearing surface 101 is located more outward. By individually and combinatorially using the above means, a fixture that can be reliably sealed between the housing parts and relative to the surrounding environment can be provided without adversely affecting the power for opening and closing the fixture. Preferred embodiments of the subject matter claimed in the following claims are described in the specification and drawings. The optional features disclosed in the specification, claims and drawings can be used individually or in any desired combination to implement the claimed subject matter in various configurations according to the following claims. The various aspects and embodiments described above can be combined to create additional embodiments. Other modifications can be made to the embodiments according to the description in the above specification. Generally, the terms used in the following claims should not be construed as limiting the claims to the specific aspects and embodiments disclosed in the specification and claims, but should be construed to include all possible embodiments and the equivalent scope including all possible embodiments. 1: Spring 1a, 1b: Elastic element 2: Pressure space 3: Housing 3a, 3b: Housing part 4: Pressure space 5: Object 6: Compressed air pump 7: Clamping surface 8: Clamping element 9: Main axis 10: Device 11: Recess 12: First housing contact surface 12a: Surface 13: Internal space 14: Opening 15: Hole 16c: First side surface 17: Fastening means 20: Seal 30: Seal 100a: Second edge 100b: First edge 101: First bearing surface 102: Second bearing surface 103: Inclined surface 104: Inclined surface 105: Inner surface 106: Notch 110: Groove 112, 122: Stoppers I, II: Ports R: Radial direction B: Width T: Depth Parts shown in multiple figures have the same reference symbols. [Figure 1A] is a cross-sectional view of the inward passive pneumatic clamping and / or braking device in the closed state according to the present application. [Figure 1B] is a cross-sectional view of the outward passive pneumatic clamping and / or braking device in the closed state according to the present application. [Figure 2A] is a cross-sectional view of the inward passive pneumatic clamping and / or braking device in the open state according to the present application. [Figure 2B] is a cross-sectional view of the outward passive pneumatic clamping and / or braking device in the open state according to the present application. [Figure 3A] is a cross-sectional view of the inward active pneumatic clamping and / or braking device in the open state according to the present application. [Figure 3B] is a cross-sectional view of the outward active pneumatic clamping and / or braking device in the open state according to the present application. [Figure 4A] is a cross-sectional view of the inward active pneumatic clamping and / or braking device in the closed state according to the present application. [Figure 4B] is a cross-sectional view of the outward active pneumatic clamping and / or braking device in the closed state according to the present application. [Figure 5A] is a three-dimensional cross-sectional view of the pneumatic clamping and / or braking device according to the present application. [Figures 5B to 5D] are schematic views of a modification of the housing part in Figure 5A. [Figure 6] is a cross-sectional view of a modification of the housing part according to the present application. [Figure 7] is a top view of a spring plate in the form of a ring. [Figure 8] is a top view of the modification of the housing part according to the present application as applied to Figure 7. 1: Spring 1a, 1b: Elastic element 2: Pressure space 3: Housing 3a, 3b: Housing part 4: Pressure space 5: Object 6: Compressed air pump 7: Clamping surface 8: Clamping element 9: Main axis 10: Device 13: Internal space I, II: Ports

Claims

1. A housing portion (3a, 3b) of a pneumatic clamping and / or braking device (10), comprising: A first edge (100b) of the housing portion (3a, 3b); a second edge (100a) of the housing portion (3a, 3b) relative to the first edge (100b); an annular recess (11) disposed between the second edge (100a) and the first edge (100b) for clamping an annular spring plate (1a, 1b) between a first bearing surface (101) of the housing portion (3a, 3b) defined by the recess (11) and a second bearing surface (102) of the housing portion (3a, 3b) defined by the recess (11); a clamping element (8) having a clamping surface (7) configured to clamp the spring plate (1a, 3b) when the spring plate (1a, 3b) is in the housing portion (3a, 3b). 1b) When clamped in the recess (11) between the first bearing surface (101) and the second bearing surface (102) in a manner that clamping and / or braking force is transmitted to an object (5) to be clamped and / or braked, wherein the manner is such that a first end of the spring plate (1a, 1b) is supported on the first bearing surface (101) and a second end of the spring plate (1a, 1b) is pressed on the second bearing surface (102); and a first housing contact surface (12a) extends between the first edge (100b) and the first bearing surface (101); wherein at least one groove (110) is provided on the first housing contact surface (12a) for accommodating a sealing means; The housing portion (3a, 3b) has one, two or more ports (I, II) for applying a pressure medium to the housing portion, 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 housing contact surface (12a) extends between the first edge (100b) of the housing portion (3a, 3b) and one or more of the ports (I, II).

2. The housing portion (3a, 3b) as described in claim 1, wherein, The first housing contact surface (12a) further includes one or more holes (15) for fastening the housing portion (3a) to another housing portion (3b) by means of a fastening means (17).

3. The housing portion (3a, 3b) as described in claim 2, wherein, The at least one groove (110) on the first housing contact surface (12a) extends between the hole (15) and the first bearing surface (101), and the hole (15) on the first housing contact surface (12a) is located between the first edge (100b) and the at least one groove (110).

4. The housing portion (3a, 3b) as described in claim 1, wherein, The groove (110) extends at least partially along an arc and / or at least one groove (110) is designed to extend at least partially around the center point of the annular recess (11).

5. The housing portion (3a, 3b) as described in claim 1, wherein, The groove has a width (B) of 1 mm to 2 mm and / or a depth (T) of 0.5 mm to 1.0 mm.

6. The housing portion (3a, 3b) as described in claim 1, wherein, The housing portion (3a, 3b) is designed such that when the second end of the spring plate (1a, 1b) is pressed against the second bearing surface (102), the housing portion (3a, 3b) elastically deforms the area of ​​the clamping element and / or the second bearing surface (102), and the clamping surface (7) transmits clamping and / or braking force to the object (5) to be clamped and / or braked.

7. The housing portion (3a, 3b) as described in claim 1, wherein, The housing portion (3a, 3b) further includes: a second housing contact surface (12b) extending between the second bearing surface (102) and the second edge (100a) of the housing portion (3a, 3b), and the annular recess (11) defines an annular opening (12) for inserting the spring plate (1a, 1b) into the housing portion (3a, 3b), the annular opening (12) being formed between the first housing contact surface (12a) and the second housing contact surface (12b).

8. The housing portion (3a, 3b) as described in claim 1, wherein, The second bearing surface (102) and the clamping surface (7) are disposed on the opposite side surface of the clamping element (8), and / or the clamping surface (7) is disposed on the second edge (100a) or surface.

9. The housing portion (3a, 3b) as described in claim 1, wherein, The distance from the second bearing surface (102) to the second edge (100a) or the clamping surface (7) is less than the distance from the first bearing surface (101) to the second edge (100a) or the clamping surface (7), and / or the distance from the first bearing surface (101) to the first edge (100b) is less than the distance from the second bearing surface (102) to the first edge (100b), and / or in the state of being installed in the clamping and / or braking device, the second edge (100a) of the housing portion (3a, 3b) is closer to the object (5) than the first edge (100b), and / or in the state of being installed in the clamping and / or braking device, the second housing contact surface (12b) of the housing portion (3a, 3b) is closer to the object (5) than the first housing contact surface (12a).

10. 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) includes a first housing portion (3a) as described in claim 1 and a second housing portion (3b) as described in claim 1, the first housing portion (3a) and the second housing portion (3b) being arranged relative to and fixed to each other such that the first housing contact surface (12a) of the first housing portion (3a) faces the first housing contact surface (12a) of the second housing portion (3b), and the recess (11) of the first housing portion (3a) and the recess (11) of the second housing portion (3b) together form an internal space (13) within the housing (3), wherein a seal The means are housed in corresponding grooves (110) of each of the housing portions (3a, 3b); and a spring (1) is disposed in the internal space (13), including a first spring plate (1a) and a second spring plate (1b) in an annular shape, the spring plates (1a, 1b) being disposed in the internal space (13) such that at least one pressure space (2, 4) is formed in the internal space (13), at least a portion of the pressure space is restricted by the spring plates (1a, 1b), the pressure space (2, 4) is ventable or ventable and can withstand overpressure of a pressure medium supplied to the housing (3); The first spring plate (1a) is clamped between the first bearing surface (101) and the second bearing surface (102) of the first housing portion (3a); the second spring plate (1b) is clamped between the first bearing surface (101) and the second bearing surface (102) of the second housing portion (3b); the spring plates (1a, 1b) are arranged relative to at least one of the pressure spaces (2, 4) such that the bending of at least one of the spring plates (1a, 1b) can be changed by allowing air to enter or exit the pressure space (2, 4) or by subjecting the pressure space (2, 4) to overpressure, thereby changing the device (10) between an open state and a closed state. In the open state, the object (5) is spaced apart from the clamping surface (7), and in the closed state, one or more of the clamping surfaces (7) transmit clamping and / or braking forces to the object (5).

11. The clamping and / or braking device (10) as described in claim 10, wherein, The at least one pressure space includes a first pressure space (4), which is located outside the spring (1) and between at least one of the spring plates (1a, 1b) and the housing (3). The first spring plate (1a) is designed to reduce its bending by allowing air into the first pressure space (4) or by subjecting the first pressure space (4) to overpressure in sequence. When the first end of the first spring plate (1a) is supported on the first bearing surface (101) of the first housing part (3a), the second end of the first spring plate (1a) is pressed on the second bearing surface (102), so that the clamping force and / or braking force are 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 the open state to the closed state.

12. The clamping and / or braking device (10) as described in claim 11, wherein, The second spring plate (1b) is designed to reduce bending by ventilating the first pressure space (4) or by subjecting the first pressure space (4) to overpressure. When the first end of the second spring plate (1b) is supported on the first bearing surface (101) of the second housing part (3b), pressing the second end of the second spring plate (1b) on the second bearing surface (102) will cause the clamping force and / or braking force to be transmitted from the clamping surface (7) of the clamping element (8) of the second housing part (3b) to the object (5) to be clamped and / or braked, and the device (10) changes from the open state to the closed state.

13. The clamping and / or braking device (10) as described in claim 11, wherein, The device (10) is designed to change from the open state to the closed state by allowing air into the first pressure space (4) or subjecting the first pressure space (4) to overpressure, causing the first bearing surface (101) and the second bearing surface (102) of at least one of the two housing parts (3a, 3b) to move away from each other and / or reducing the bending of at least one of the spring plates (1a, 1b).

14. The clamping and / or braking device (10) as described in claim 10, wherein, The at least one pressure space includes a second pressure space (2) disposed inside the spring (1) between the two spring plates (1a, 1b). The device (10) is designed to change from the closed state to the open state by allowing air into the second pressure space (2) or subjecting the second pressure space (2) to overpressure, causing the first bearing surface (101) and the second bearing surface (102) of at least one of the two housing parts (3a, 3b) to move toward each other and / or increasing the bending of at least one of the spring plates (1a, 1b).

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