Novel housing part for a pneumatic clamping and / or braking device

Abstract

The invention relates to a housing part for a pneumatic clamping and / or braking device, the housing part comprising: a first annular opening (11a) for clamping a first annular spring plate (1a); a first clamping element (8_1) comprising a first end piece (8a), the first end piece (8a) having a first end surface (8f) and a first clamping surface (7a), the first clamping element (8_1) being designed such that when the first spring plate (1a) is clamped in the first opening (11a) between a first contact surface (101), which is defined by the first opening (11a), and a second contact surface (102), which is defined by the first opening (11a), in such a way that a first end of the first spring plate (1a) is supported on the first contact surface (101) defined by the first opening (11a) and a second end of the first spring plate (1a) presses on the second contact surface (102) defined by the first opening (11a), a first clamping and / or braking force is transferred, via the first clamping surface (7a), to a first object (5) to be clamped and / or braked; a second annular opening (11b) for clamping a second annular spring plate (1b); and a second clamping element (8_2) comprising a second end piece (8a), the second end piece (8a) having a second end surface (8f) and a second clamping surface (7b), the second clamping element (8_2) being designed such that when the second spring plate (1b) is clamped in the second opening (11b) between a first contact surface (101), which is defined by the second opening (11b), and a second contact surface (102), which is defined by the second opening (11b), in such a way that a first end of the second spring plate (1b) is supported on the first contact surface (101) defined by the second opening (11b) and a second end of the second spring plate (1b) presses on the second contact surface (102) defined by the second opening (11b), a second clamping and / or braking force is transferred, via the second clamping surface (7b), to a second object (5)

Description

[0001] HEMA Maschinen- und Apparate schütz GmbH

[0002] H50125WO

[0003] September 25, 2025

[0004] Novel housing component for a pneumatic clamping and / or braking device

[0005] DESCRIPTION

[0006] TECHNICAL AREA

[0007] The invention relates to a housing part for a pneumatic clamping and / or braking device and a pneumatic clamping and / or braking device with such a housing part. The invention also relates to the use of this housing part or this device for clamping and / or braking an object, in particular a routine shaft.

[0008] BACKGROUND

[0009] In the production of tool or machine parts, machining tools, particularly work spindles or other machine tools, are used. These tools, attached to a shaft, machine material from a workpiece, especially to shape it into the desired form. The shaft can be a rotary or swivel axis of such a machine. Furthermore, tables that can be rotated or swiveled by means of a shaft are used to position tools or workpieces in the appropriate machining position or to move workpieces at appropriate speeds. A high shaft speed is one of the prerequisites for precise and efficient machining. Emergency or safety systems are therefore designed to stop the shaft or hold it in a fixed position in the event of a malfunction or system failure, such as a power outage or cable break.

[0010] Common machining tools are equipped with electromagnetic, hydraulic, or pneumatic clamping and / or braking devices. These devices have a friction lining that can be frictionally engaged with the shaft via force transmission. This allows for different speeds of shaft clamping.

[0011] In hydraulic clamping devices, a chamber is pressurized with hydraulic oil, clamping the rotating shaft or disc securely. Passive hydraulic clamps are also known. However, such hydraulic clamps exhibit long response times, or achieving short response times requires considerable effort. Furthermore, the hydraulic components, especially hydraulic valves and hydraulic tubing, are expensive and require longer maintenance. HEMA Maschinen- und Apparate schütz GmbH

[0012] H50125WO

[0013] September 25, 2025

[0014] Assembly times. Furthermore, the hydraulic oil necessitates additional effort to maintain cleanliness in the vicinity of a hydraulic clamp.

[0015] Pneumatic clamping and / or braking devices typically use elastic components, especially spring plates, which are pressurized with compressed air and can overcome some of the disadvantages of hydraulic clamping devices mentioned above.

[0016] DE 20 2023 101 258 describes pneumatic clamping devices with two annular spring plates that are inserted into a housing of the clamping devices and form a pressure chamber there. This chamber can be pressurized with compressed air or vented to change the bending of the spring plates and thereby switch between a closed state of the clamping devices, in which an object to be clamped, such as a rotatable shaft, is clamped, and an open state of the clamping devices, in which the object is free. In practice, however, it has been shown that the clamping forces achieved with this method can be optimized or are insufficient for some applications.

[0017] SHORT DESCRIPTION

[0018] Based on the aforementioned prior art, the invention aims to provide means that enable a pneumatic clamping and / or braking device to exert higher clamping and / or braking forces on an object to be clamped and / or braked.

[0019] The invention solves this problem with a housing part having the features of claim 1 and with a clamping and / or braking device having the features of claim 25. Preferred embodiments are described in the dependent claims, in the description and in the figures.

[0020] According to the inventive solution, a housing part for a pneumatic clamping and / or braking device is proposed, the housing part comprising: a first annular recess for clamping a first annular spring plate; a first clamping element comprising a first end piece, wherein the first end piece has a first end surface and a first clamping surface, wherein the first clamping element is designed such that, when the first spring plate is clamped in the first recess between a first contact surface defined by the first recess and a second contact surface defined by the first recess, a first end of the first spring plate is supported on the first contact surface defined by the first recess and a second end of the first HEMA Maschinen- und Apparate schütz GmbH

[0021] H50125WO

[0022] September 25, 2025

[0023] The spring plate presses onto the second contact surface defined by the first recess to transmit a first clamping and / or braking force to a first object to be clamped and / or braked via the first clamping surface; a second annular recess for clamping a second annular spring plate;a second clamping element comprising a second end piece, wherein the second end piece has a second end surface and a second clamping surface, wherein the second clamping element is designed such that when the second spring plate is clamped in the second recess between a first contact surface defined by the second recess and a second contact surface defined by the second recess, a first end of the second spring plate rests on the first contact surface defined by the second recess and a second end of the second spring plate presses on the second contact surface defined by the second recess, transmitting a second clamping and / or braking force to a second object to be clamped and / or braked via the second clamping surface;wherein the first end surface of the first clamping element and the second end surface of the second clamping element are arranged facing away from each other, and preferably oriented in opposite directions.

[0024] The present invention is based on the inventors' realization that the clamping and / or braking force achievable through the spring force on the object to be clamped or braked is limited by the housing. The inventors have recognized that a limiting factor is the axial forces that occur when the housing halves, which are attached to each other in the prior art, are placed on top of each other and fastened together (see F_ax in Fig. 6). These axial forces occur at the adjacent end surfaces of the clamping elements (see Fig. 6) and represent a resistance for the spring plates. The inventors have recognized that the aforementioned entirely new housing geometry with two clamping elements and opposing end surfaces eliminates these axial forces, thereby allowing the spring force to be transmitted more effectively to the object to be clamped.Contrary to the previous general approach with joined clamping elements, separating the two clamping elements is therefore more effective for the operation of the clamping and / or braking device. This allows the holding torques to be increased without reducing the service life of the device. Furthermore, this generates a measurable gain in clamping and / or braking force without negatively affecting the functionalities, such as sealing and opening and closing speed, of the clamping and / or braking device.

[0025] According to a preferred aspect, the first end piece is connected to the second end piece by means of a housing section extending continuously from the first end piece to the second end piece. This is conducive to synchronous activation of the HEMA Maschinen- und Apparate schütz GmbH.

[0026] H50125WO 25.09.2025 both end pieces.

[0027] According to a preferred aspect, the first clamping and / or braking force is applied in a first clamping plane spanned by two vectors, each forming a radius of the first annular recess and extending a longitudinal axis of the first end piece transversely, preferably perpendicularly, to the first clamping plane, and / or the second clamping and / or braking force is applied in a second clamping plane spanned by two vectors, each forming a radius of the second annular recess and extending a longitudinal axis of the second end piece transversely, preferably perpendicularly, to the second clamping plane, preferably wherein the first end surface of the first clamping element and the second end surface of the second clamping element are oriented in opposite directions of the longitudinal axes of the end pieces.These geometric measures, individually and in combination, allow for a particularly effective and uniform application of the clamping or braking force to the object to be clamped or braked.

[0028] Preferably, the housing part has a housing beam, preferably a one-piece or integral one-piece beam, which is connected to the two clamping elements and extends between an outer edge and an inner edge of the housing part and between the recesses, preferably wherein the housing beam forms the first annular recess on a first beam surface and forms the second annular recess on a second beam surface that faces away from and / or opposite to the first beam surface. Preferably, the longitudinal axis of the housing beam can extend transversely to a longitudinal axis of the continuous housing section and be preferably one-piece or integrally connected to it.These measures for such a housing beam arranged centrally within the housing part, both individually and in combination, promote the stability and compactness of the housing part and also allow for better synchronization of the activation of the clamping elements by the spring plates. Preferably, the housing beam extends with its longitudinal axis transverse to the longitudinal axis of the first and / or second end piece, and preferably substantially parallel to the first and / or second clamping plane. The first annular recess can be open in the direction of the longitudinal axis of the first end piece, and / or the second annular recess can be open in the direction of the longitudinal axis of the second end piece. These geometric measures, individually and in combination, allow for a particularly effective and uniform application of the clamping or braking force to the object to be clamped or braked.

[0029] A particularly preferred measure for further reducing the housing resistance HEMA Maschinen- und Apparate schütz GmbH

[0030] H50125WO

[0031] The design, dated September 25, 2025, describes the creation of one or more cutouts in the surface of the housing beam at the transition between the housing beam and the adjacent one or more annular recesses. The first beam surface can form a first cutout in the area of ​​the first annular recess, and / or the second beam surface can form a second cutout in the area of ​​the second annular recess, preferably wherein, for each of the cutouts, the spring plate clamped in the respective annular recess extends beyond the cutout. These cutouts allow the housing beam, in the area adjacent to the respective cutout, to expand in response to the pressure exerted by the spring plate clamped in the respective annular recess on the second contact surface defined by the respective annular recess, particularly in the radial direction.This increased ductility of the housing component, which can be made of tool steel, allows the clamping elements to move radially and uniformly across almost their entire clamping surface when activated by the spring plates, thus reducing or even eliminating rotation of the clamping elements. In particular, the elimination of axial forces described above results in the spring force causing almost completely parallel movement of the clamping elements. This design of the housing beam ensures that stresses are largely relieved by (radial) extension of the housing beam. These measures can reduce the rotation angle of the clamping elements in the prior art by up to 95%, allowing the clamping elements to move uniformly and essentially linearly in the radial direction across the clamping surface.The movement of the clamping elements can then occur transversely, essentially perpendicularly, to the longitudinal axis of the clamping elements across the entire or nearly the entire clamping surface. Only minor rotations at the respective (free) end of the clamping element can result in the stroke at this (free) end being slightly greater than at the opposite end of the respective clamping surface.

[0032] The inventors have discovered that particularly suitable parameters for effectively adjusting the extensibility of the housing beam in an area adjacent to the cutouts are the following: the cutout length, and / or the thickness of the housing beam in an area adjacent to the cutout, and / or one or more radii of curvature of the relevant beam surface, and / or the position and / or radial length of an opening in the area of ​​the housing beam extending between and adjacent to the cutouts. The inventors have identified particularly suitable ranges of values ​​for these parameters, which are described below. Other parameters are also conceivable. HEMA Maschinen- und Apparate schütz GmbH

[0033] H50125WO

[0034] September 25, 2025

[0035] A further additional or alternative, particularly preferred measure for further reducing the housing resistance is a tapered section formed in an arm of the clamping element. Preferably, one or more of the clamping elements have an arm adjacent to the corresponding end piece of the clamping element, with a section of the arm tapering towards the adjacent end piece. This tapering results in greater flexibility in the area of ​​the clamping element and thus a reduction in housing resistance while maintaining the other properties of the device.

[0036] In this revelation, the term "tapered" or "tapering" is understood as a reduction in cross-section. This reduction can occur gradually, stepwise, in stages, in waves, or continuously. Accordingly, at the first end of the tapered arm section, which is located towards the end piece, the cross-section of the arm is smaller than at the second end of the tapered arm section, which is located away from the end piece. The reduction in cross-section between the two ends does not necessarily decrease continuously or gradually along the arm. The reduction in cross-section can occur abruptly or in stages.The cross-sectional area of ​​the arm between the two ends of the tapered arm section can also increase again after an initial reduction in cross-sectional area, as long as there is an overall reduction in the cross-sectional area of ​​the arm from the second end of the arm section to the first end of the arm section.

[0037] According to a preferred aspect of the invention, the tapered section of the arm has one or more recesses. The tapering can be achieved by these one or more recesses. The tapered arm section can also have these one or more recesses in addition to a continuous and / or gradual taper towards the end. In other words, the recesses contribute to, define, or enhance the tapering. The one or more recesses may preferably include at least one recess with a rounded contour. The one or more recesses may preferably include two or more wave-shaped recesses. The one or more recesses, particularly the rounded contour and wave shape, improve the distribution of stresses within the housing and enhance the tapering's effectiveness in transmitting the clamping force.For example, a stress center can form in the arm at the deepest point of each recess. These aspects of the recesses can, individually or in combination, make particularly effective contributions to reducing housing resistance. HEMA Maschinen- und Apparate schütz GmbH.

[0038] H50125WO

[0039] September 25, 2025

[0040] According to a preferred aspect of the invention, the clamping element is designed such that when the second end of the spring plate presses against the second contact surface, the end piece is rotated about a pivot point relative to the section of the arm, thereby transmitting the clamping and / or braking force to the object to be clamped and / or braked via the clamping surface. Because the end piece rotates relative to the tapered section of the arm during rotation, and because the arm adjacent to the end piece tapers towards the rotating end piece, the tapering is located where a particularly large increase in the flexibility of the housing part is achieved. This is all the more true if the tapering, in particular the at least one recess with a rounded contour, is located in the area of ​​the transition from the arm to the end piece and / or if the section of the arm tapers towards the second contact surface and / or in the area of ​​the pivot point (e.g., towards or away from the pivot point).Particularly large increases in flexibility are also achieved when the pivot point is located within the clamping element or in an area around the clamping element, and is preferably located in the area of ​​the section of the arm or in the area between the section of the arm and the clamping surface or in the area of ​​the end piece.

[0041] According to a preferred aspect of the invention, the clamping element has a clamping surface on a first side surface of the end piece facing the object, and a second contact surface on a second side surface of the end piece, which is preferably facing away from the first side surface and / or the object and / or opposite the first side surface. This allows the spring force exerted on the clamping element by the spring plates to be transmitted particularly effectively to the object via the clamping surface.

[0042] According to a preferred aspect of the invention, the clamping element is elastic in such a way that it forms a lever arm which is designed to deform elastically when at least one of the spring plates is pressed onto the second contact surface of at least one of the housing parts, and thereby rotate about a pivot point such that the clamping surface of the clamping element transmits the clamping and / or braking force to the object to be clamped and / or braked. The clamping element can form an elastically deformable lever arm which, by means of the resulting rotation, presses the clamping surface against the object in order to transmit the clamping and / or braking force to the object.

[0043] The end piece of the clamping element can preferably form a section of a lever arm along the clamping surface, which is designed such that when the lever arm is rotated about the pivot point, a first end of the lever arm section moves closer to HEMA Maschinen- und Apparate schütz GmbH by a first radial stroke.

[0044] H50125WO

[0045] September 25, 2025, the object is moved. The inventors have discovered that, through the narrowing of the arm section of the clamping element as provided in the invention, the first radial stroke corresponds to one to ten times, 1.25 to five times, or 1.35 to two times, a second radial stroke, by which a second end of the lever arm section is moved closer to the object when the lever arm rotates around the pivot point, and which second end of the lever arm section is closer to the pivot point than the first end of the lever arm section. In conventional clamping and / or braking devices, the majority or even almost the entire radial stroke of the clamping surface towards the object occurs at the first end of the lever arm section, while the areas of the clamping surface located closer to the pivot point exhibit little or no radial stroke.Thus, the clamping and / or braking force is only transmitted to the object over a fraction of the available clamping area, and wear on the clamping element and / or object can be high. The inventors have discovered that the inventive widening allows the second radial stroke at the second end of the lever arm section to be significantly increased, so that the second radial stroke occurring there can be increased, for example, from 5% to 65% of the first radial stroke at the first end of the lever arm section. This results in a larger or even the entire clamping surface contacting the object to be clamped or braked, improving the effectiveness of the clamping or braking force and reducing wear. The inventive widening also allows the material of the clamping element between the clamping surface and the pivot point to be reduced, so that almost the entire clamping surface comes into contact with the object.

[0046] According to the inventive solution, a clamping and / or braking device for clamping and / or braking an object to be clamped and / or braked is also provided, the device comprising: a housing comprising: one or more housing parts according to any one of the preceding claims; and for each of the housing parts, a first cover assigned to the housing part and a second cover assigned to the housing part; wherein for each of the housing parts: the first cover covers the first recess and the second cover covers the second recess such that the recesses together form an interior space within the housing, the interior space comprising a spring arranged therein, which spring comprises a first annular spring plate and a second annular spring plate.wherein the first spring plate is clamped between the first contact surface defined by the first recess and the second contact surface defined by the first recess, and the second spring plate is clamped between the first contact surface defined by the second recess HEMA Maschinen- und Apparate schütz GmbH H50125WO 25.09.2025 and the second contact surface defined by the second recess, so that at least one pressure chamber is formed in the interior, which is at least partially bounded by the spring plates, wherein the pressure chamber can be vented or aerated and pressurized with an overpressure of a pressure medium that can be supplied to the housing, and wherein the spring plates are arranged relative to the at least one pressure chamber in such a way that by venting or aerating the pressure chamber or by pressurizing the pressure chamber,a bending of at least one of the spring plates is changeable and thereby the clamping and / or braking device changes between an open state in which an object to be clamped and / or braked is spaced away from the clamping surfaces, and a closed state in which one or more of the clamping surfaces transmit a clamping and / or braking force to the object.

[0047] The tapering of the section of the arm of the clamping element of at least one of the housing parts can be shaped such that when the clamping and / or braking device changes from the open state to the closed state, a greater holding torque or clamping force is applied to the object (reduction of the housing resistance by the tapering) and, in particular, the first radial stroke of the clamping element of at least one of the housing parts towards the object corresponds to one to ten times, preferably 1.25 to five times, particularly preferably 1.35 to two times, of the second radial stroke of the clamping element of at least one of the housing parts towards the object, which reduces wear on the clamping surface and / or the object.

[0048] If this brief description of the invention describes features that are not listed in the patent claims, these features do not constitute essential features in the sense that these features must necessarily be included in the patent claims to describe the invention; however, these features are particularly prominent preferred realizations of the claimed invention, can be combined with any of the patent claims, and can also be combined with each other as desired.

[0049] BRIEF DESCRIPTION OF THE FIGURES

[0050] Figure 1A shows a schematic cross-section through an inwardly directed, passive pneumatic clamping and / or braking device according to the invention in the closed state. HEMA Maschinen- und Apparate schütz GmbH

[0051] H50125WO

[0052] September 25, 2025

[0053] Figure 1B shows a schematic cross-section through an outwardly directed, passive pneumatic clamping and / or braking device according to the invention in the closed state.

[0054] Figure 2Ä shows a schematic cross-section through an inwardly directed, passive pneumatic clamping and / or braking device according to the invention in the open state.

[0055] Figure 2ß shows a schematic cross-section through an outwardly directed, passive pneumatic clamping and / or braking device according to the invention in the open state.

[0056] Figure 3A shows a schematic cross-section through an inwardly directed, active pneumatic clamping and / or braking device according to the invention in the open state.

[0057] Figure 3B shows a schematic cross-section through an outwardly directed, active pneumatic clamping and / or braking device according to the invention in the open state.

[0058] Figure 4A shows a schematic cross-section through an inwardly directed, active pneumatic clamping and / or braking device according to the invention in the closed state.

[0059] Figure 4B shows a schematic cross-section through an outwardly directed, active pneumatic clamping and / or braking device according to the invention in the closed state.

[0060] Figure 5A shows a cross-section through a pneumatic clamping and / or braking device in a three-dimensional representation according to the prior art.

[0061] Figures 5B to 5D show a variant of a housing part taken from Figure 5A according to the state of the art.

[0062] Figure 6 shows a cross-section through a pneumatic clamping and / or braking device in a two-dimensional representation according to the prior art.

[0063] Figure 7A shows a cross-section through a preferred embodiment of the housing part according to the invention in a two-dimensional view. HEMA Maschinen- und Apparate schütz GmbH

[0064] H50125WO

[0065] September 25, 2025

[0066] Figure 7B shows a close-up of area Z in the cross-section of the housing part according to the invention as shown in Figure 7A.

[0067] Figures 8A and 8B show preferred embodiments of the housing part according to the invention.

[0068] Figure 9 shows a preferred embodiment of the housing part according to the invention, in which the tapering shown in Figure 8B is realized.

[0069] Figures 10A and 10B show preferred covers according to the invention for embodiments of the housing part according to the invention. The covers serve to cover the housing parts and to seal the housing parts, in particular the relevant pressure chamber, against the pressure medium.

[0070] Figure 11 shows a preferred embodiment of the clamping and / or braking device according to the invention, in which the embodiment of the housing part according to the invention shown in Figures 7A and 7B and the preferred cover shown in Figure 10A are realized.

[0071] Figure 12 shows a tandem of the preferred embodiment of the clamping and / or braking device according to the invention, in which the embodiment of the housing part according to the invention shown in Figures 7A and 7B and the preferred covers shown in Figures 10A and 10B are implemented. Optionally, the tapering shown in Figures 8A and 8B can also be implemented.

[0072] Figure 13 shows a tridem of the preferred embodiment of the clamping and / or braking device according to the invention, in which the embodiment of the housing part according to the invention shown in Figures 7A and 7B and the preferred covers shown in Figures 10A and 10B are implemented. Optionally, the tapering shown in Figures 8A and 8B can also be implemented.

[0073] Figure 14 shows a tandem of the preferred embodiment of the clamping and / or braking device according to the invention, in which the embodiment of the housing part according to the invention shown in Figure 9 (with or without the tapering from Figures 8A and 8B) is implemented and in which the housing parts shown in Figure 6 from the prior art are implemented as covers. HEMA Maschinen- und Apparate schütz GmbH

[0074] H50125WO 25.09.2025

[0075] Figure 15 shows a tridem of the preferred embodiment of the clamping and / or braking device according to the invention, in which the embodiment of the housing part according to the invention shown in Figure 9 (with or without tapering from Figures 8A and 8B) is realized and in which the housing parts shown in Figure 6 from the prior art are realized as covers.

[0076] Components shown in multiple figures bear the same reference symbols.

[0077] DETAILED DESCRIPTION

[0078] The invention relates to a housing part for a pneumatic clamping and / or braking device and a pneumatic clamping and / or braking device with a housing part according to the invention. The invention also relates to the use of this housing part or this device for clamping and / or braking an object, in particular a routine shaft.

[0079] When this document refers to the device “clamp” or “clamping device”, the “clamping force” or the process of “clamping”, it also includes the device of the “brake” or “braking device”, the “braking force” or the process of “braking”.

[0080] Figures 1A to 4B schematically show cross-sections through such a pneumatic clamping device 10 according to the invention with a housing 3, and with a spring 1 arranged in the housing 3, which comprises at least two annular spring plates 1a, 1b.

[0081] The clamping device 10 according to the invention comprises an interior space 13 within the housing 3, wherein the interior space 13 comprises the spring 1 clamped therein in the housing 3, which spring 1 comprises a first clamped annular spring plate 1a and a second clamped annular spring plate 1b, wherein the spring plates 1a, 1b are clamped to the housing 3 in such a way that at least one pressure chamber 2, 4 is formed in the interior space 13, which is at least partially bounded by the spring plates 1a, 1b, wherein the pressure chamber 2, 4 can be vented or aerated and can be pressurized with an overpressure of a pressure medium that can be supplied to the housing 3, and wherein the spring plates 1a, 1b are arranged relative to the at least one pressure chamber 2, 4 in such a way that by venting or aerating the pressure chamber 2, 4 or by pressurizing the pressure chamber 2, 4, a bending of at least one of the spring plates 1a,ib is changeable and thereby the clamping and / or braking device 10 between an open state in which a HEMA Maschinen- und Apparate schütz GmbH to be clamped,

[0082] H50125WO 25.09.2025 and / or object 5 to be braked is spaced apart from one or more clamping surfaces 7 of a clamping element 8, and changes to a closed state in which one or more of the clamping surfaces 7 transmit a clamping and / or braking force to the object 5.

[0083] Figures 1A, 1B, 4A, and 4B each show such clamping devices 10 in the closed state, with the clamping surface 7 of the clamping element 8 contacting the circumference of the object 5. The clamping element 8 is also referred to as a clamping lip. The clamping element 8 can be formed integrally with the other parts of the housing 3 or it can be a structurally separate component of the housing 3.

[0084] The clamping force F3 (see Fig. 8A) or clamping effect of the clamping surface 7 on the object 5 to be clamped occurs in a clamping plane (see Kl, K2 in Fig. 7B, 9), which is spanned by two vectors, each forming a radius R (see Fig. 5A) of the annular spring plates a1, b1 and the annular recess 11, respectively. The axis 9 can be designated as the principal axis of the clamping device 10, which runs perpendicular to the clamping plane. The clamping device 10 can be designed to be rotationally symmetrical about this principal axis 9. The principal axis 9 can pass approximately or exactly through the center of an opening in the clamping device 10 (opening 14 in Fig. 5B). In Figures 1A, 4A, the object 5 to be clamped, for example a rotatable shaft of a machine or a table, is placed inside the opening 14 and the clamping force of the clamping device is therefore directed radially inwards towards the main axis 9 (perpendicular to the main axis 9) within the clamping plane.In Figures 1B, 4B, 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 from the main axis 9 (perpendicular to the main axis 9) within the clamping plane.

[0085] In Figures 1A, 2A, 3A, and 4A, the clamping element 8 is located between spring 1 and opening 14 or main axis 9. In Figures 1B, 2B, 3B, and 4B, however, the object 5 to be clamped at least partially surrounds the clamping device 10, so that the clamping element 8 is located between the object 5 and opening 14 or main axis 9. In Figures 1B, 2B, 3B, and 4B, instead of the object 5 to be clamped, a component that at least partially fills opening 14, through which the main axis 9 extends, may be inserted into opening 14.

[0086] In Figures 1A to 5A, the spring 1 is clamped between two contact surfaces (101 and 102 in Figures 5C and 5D) within the housing 3 of the clamping devices 10 and extends between the two contact surfaces. In the unpressurized initial state of the device 10 in Figures 1A to 2B, the spring 1 may be slightly bent in order to be held firmly in this state. HEMA Maschinen- und Apparate schütz GmbH H50125WO 25.09.2025

[0087] The housing 3 is fixed, and the same applies to any other state of the device 10, the degree of bending of the spring 1 depending on the state of the device 10. If the device 10 is in a state where the spring 1 is bent (e.g., more bent than in the unpressurized initial state, such as in the open state), venting an inner pressure chamber 2 of the spring 1 and venting an outer pressure chamber 4 can lead to at least partial relaxation of the spring 1 while the spring 1 presses against the radial contact surfaces, the distance between which increases slightly. This causes the housing 3 to be elastically deformed in the area of ​​the clamping element 8 or the clamping surface 7, and the clamping surface 7 then contacts the object 5 and is pressed against it with a (predefined) clamping force to clamp the object 5. The object 5 is clamped, and the clamping device 10 is in the closed state, as shown in Figures 1A and 1B.In the closed state of the device 10, the spring 1 can still be slightly bent even after partial relaxation in order to be firmly fixed in the housing 3 in this state.

[0088] The clamping element 8 can be an elastic element, such as a spring fork, which, in the unpressurized initial state of the device 10, is moved from a relaxed initial position to a tensioned position by the spring force F2 (see Fig. 8A) of the (slightly) bent spring 1, for example by bending the spring fork (clamping element 8), until an equilibrium is reached in the unpressurized initial state between a restoring force of the elastic clamping element 8 and the spring force of the spring 1. At this equilibrium, the clamping surface 7 can, for example, press against the object 5 with the clamping force F3.

[0089] By additionally pressurizing the outer pressure chamber 4 with compressed air (for example, at 4 bar or 6 bar) in the closed state, it is optionally possible to increase the clamping force by a predetermined value. This is indicated in Figures 1A and 1B by the optional additional compressed air pump (booster) 6 and the hatching (compressed air) in the outer pressure chamber 4. The outer pressure chamber 4 can be connected via an opening in the housing 3 to an air connection II (also referred to as "Close") to which the compressed air pump 6 can be connected.

[0090] This makes it possible, for example, to control the device 10 in such a way that a change occurs between a braked movement of the actuated object 5 (in the unpressurized state) and a complete clamping of the object (with sufficient pressurization).

[0091] Although two printing chambers, 2 and 4, are shown and described here as examples, HEMA Maschinen- und Apparate schütz GmbH

[0092] H50125WO 25.09.2025

[0093] Clamping device 10 can also be operated with a single pressure chamber, which can be, for example, the inner pressure chamber 2 or the outer pressure chamber 4.

[0094] Figures 2A and 2B show the clamping devices 10 from Figures 1A and 1B, each in the open state in which the clamping surface 7 does not touch the circumference of the object 5 or is spaced away from the circumference of the object. The inner pressure chamber 2 can be connected via an opening in the housing 3 to an air connection I (also referred to as "Open"), to which a compressed air pump 6 can be connected.

[0095] By pressurizing the inner pressure chamber 2 with compressed air (e.g., 4 bar or 6 bar) using the air pump 6 and venting the outer pressure chamber 4, the spring 1 is bent or tensioned more strongly (convexly) compared to the closed state shown in Figs. 1A and 1B, resulting in a radial shortening of the spring 1 and a corresponding decrease in the distance between the two contact surfaces. The clamping surface 7 lifts away from the object 5 to release the clamping. The object 5 is now freely movable (e.g., rotatable about axis 9 or linearly movable along axis 9), and the clamping device 10 is open.

[0096] The device 10 can be switched back and forth between the closed and open states.

[0097] Such pneumatic clamps 10 have a number of advantages over hydraulic clamps.

[0098] By using the combination of an elastic component, here a spring 1 with spring plates 1a, 1b, and compressed air, very short reaction times are achieved when switching between the open and closed states, and a secure clamping of the object 5 is also ensured. The spring 1 can preferably be plate-shaped, as shown in more detail in Fig. 10, wherein two superimposed spring plates 1a, 1b form the spring 1 and the inner pressure chamber 2 of the spring 1 between the plates 1a, 1b (cf. Fig. 1). The plates 1a, 1b can also be annular, as shown in Fig. 5, and can optionally have additional radial slots, so that a change in the inner diameter is possible with particularly low forces. The spring plates 1a, 1b can be coated with rubber, at least in the area of ​​the slots, to create the necessary seal for the compressed air. The spring plates 1a, 1b can also be completely encased in rubber.The spring plates la, ib are generally designed to be so pressure-resistant and so elastically bendable and are arranged in the housing 3 of the clamping device 10 such that the inner pressure chamber 2 is formed within the spring 1 between the spring plates la, ib HEMA Maschinen- und Apparate schütz GmbH.

[0099] H50125WO

[0100] 25.09.2025 and between each spring plate aa, bb and the housing 3 of the clamping device 10 the outer pressure chamber 4 is formed.

[0101] By pressurizing or pressurizing the outer pressure chamber 4 with compressed air and venting the inner pressure chamber 2, as shown in Fig. 1A, the spring 1 is at least partially relaxed and exerts a clamping force on the object 5 to be clamped, in particular on the circumference of a shaft 5. This causes the object 5 to be clamped or the shaft 5 to be brought to an immediate standstill in the event of a power or pressure failure, thus providing a safety clamping mechanism. Depending on their size, such pneumatic clamps 10 can achieve holding torques of several hundred Nm and up to several thousand Nm, which can be further increased by additionally pressurizing the outer pressure chamber 4 with compressed air, as indicated in Fig. 1A by a pressure pump 6 (booster). Here, a compressed air pressure of just a few bar (for example, 4 bar or 6 bar) is sufficient to provide several times the holding torques achieved without a booster.This utilizes the fact that slight transverse bending of the plates a1, b1 (perpendicular to their longitudinal axis) during switching between the open and closed states of the clamp 10 generates large spring forces, which can be used to clamp or release pre-tensioned clamping devices 10. This enables secure clamping and releasing even of rapidly rotating machine shafts 5.

[0102] Pneumatic clamping components also offer lower costs and assembly effort compared to hydraulic components, and the use of compressed air eliminates the need for additional cleaning of the system. Furthermore, such pneumatic clamps allow for a compact design, as minimal transverse bending and longitudinal expansion of the spring, and consequently small volumes of the pressure chambers, are sufficient to generate the required clamping forces.

[0103] Pneumatic clamps are generally divided into passive clamping devices 10, as shown in Figs. 1A to 2B, and active clamping devices 10, as shown in Figs. 3A to 4B.

[0104] In its unpressurized state, spring 1 can be bent to varying degrees (transversely) and thus radially shortened to varying degrees. The inner surface of housing 3 can be adapted to or define the bending of spring plates 1a, 1b. A corresponding stop surface for spring plates 1a, 1b can, for example, be formed by an inner wall of the housing. The inner wall of the housing can be designed to be complementary (e.g., concave) to a bending (e.g., convex) of spring plates 1a, 1b. HEMA Maschinen- und Apparate schütz GmbH

[0105] H50125WO

[0106] September 25, 2025

[0107] In passive clamping devices 10, the spring 1 is usually slightly elastically bent (e.g., convex) or pre-tensioned in the unpressurized initial state, and the clamping device 10 can be closed (Figs. 1A, 1B). The clamping device 10 is only opened by an internal force applied by pressurizing the inner pressure chamber 2 with compressed air (Figs. 2A, 2B). Usually, the spring i is slightly bent in the unpressurized initial state, so that when clamping occurs or in the event of a pressure drop, the spring force provided by the energy stored in the spring i is transferred to the object 5 to be clamped as a clamping force.

[0108] In active clamping devices 10, in the pressureless initial state (Figs. 3A, 3B), the spring 1 is curved more strongly, and in particular more convexly, transversely outwards than in passive clamping devices, so that the distance between the two radial contact surfaces is reduced and the clamping device 10 is open. No clamping force is exerted on the object 5 via the clamping surface 7. The object is free, since the clamping surface 7 does not touch the object 5 or is spaced apart from it.

[0109] Due to plastic deformation of the spring plates 1a, 1b, the spring 1, with the same housing 3, can be more transversely curved outwards in the unpressurized initial state and thus more radially shortened than with passive clamping devices. This reduced radial expansion of the spring plates 1a, 1b in the unpressurized initial state can lead to the clamping device 10 being in an open position in the unpressurized initial state. Even with plastic deformation, the spring plates 1a, 1b are elastically bent and press against the contact surfaces so that the spring is fixed in the housing. The interior of the housing or the recesses can accommodate the greater curvature caused by plastic deformation in the initial state.

[0110] The clamping force must now be actively induced externally, as shown in Figures 4A and 4B, to bring the clamp into the closed state. Here, compressed air is introduced into the outer pressure chamber 4 by a compressed air pump 6, thus applying compressed air to the spring 1 from the outside in such a way that the spring 1 is actively relaxed, its curvature is reduced, the distance between the two contact surfaces increases, and the housing 3 in the area of ​​the clamping element 8 or the clamping surface 7 is elastically deformed so that the clamping surface 7 contacts the object 5 and exerts a clamping force on the object 5, thereby clamping the object 5 securely. The active clamping device 10 is then in the closed state.

[0111] Depending on the area of ​​application and prescribed safety regulations, HEMA Maschinen- und Apparate schütz GmbH is therefore consulted.

[0112] H50125WO

[0113] On September 25, 2025, an active or passive clamping system 10 was used. If safety clamping is the primary requirement, a passive clamping device is generally used. With such pneumatic passive clamping systems, it is possible to generate a predetermined clamping force even in a depressurized state, provided the device is appropriately mounted within the overall assembly. This force is then applied to the object 5 to be clamped. By applying positive or negative pressure, the forces transmitted to this object can be increased, reduced, or eliminated entirely, opening up a wide range of applications. If, on the other hand, the clamping device is primarily intended for a deliberate work process, such as a tool change, an active clamping device is generally used.

[0114] As shown in Figures 5A to 5D, the housing 3 of the known clamping devices 10 comprises two housing parts 3a, 3b (each with a spring plate la, ib), which are preferably fastened together with fastening means, such as screws, and are mounted in such a way that, in the assembled state, the two housing parts 3a, 3b define an interior space 13 between the housing parts 3a, 3b within the housing 3 in which the spring 1 together with its annular spring plates la, ib are arranged.

[0115] Each of the housing parts 3a, 3b comprises: an annular recess 11 for clamping an annular spring plate 1a, 1b between a first contact surface 101 of the housing part 3a, 3b defined by the recess 11 and a second contact surface 102 of the housing part 3a, 3b defined by the recess 11; a clamping element 8 with a clamping surface 7, wherein the clamping element 8 is designed such that, when the spring plate la, ib is clamped in the recess 11 between the first contact surface 101 and the second contact surface 102, a first end of the spring plate la, ib is supported on the first contact surface 101, the spring plate la, ib extends from the first contact surface 101 to the second contact surface 102, and a second end of the spring plate la, ib presses on the second contact surface 102, to transmit a clamping and / or braking force to an object 5 to be clamped and / or braked via the clamping surface 7.

[0116] At least part of the first contact surface 101 can extend (essentially) perpendicular to the radial direction R of the annular recess 11 and / or part of the second contact surface 102 can extend (essentially perpendicular) to the radial direction R of the annular recess 11.

[0117] An opening 14 (Fig. 5B) extends through the center of the housing 3, into which the object 5 to be clamped, such as a shaft, can be inserted. The housing can extend 360° around this opening and at least partially encloses the object 5 in at least one plane, which is referred to as the clamping plane. The central main axis 9 of the clamping devices runs centrally through the opening 14 and perpendicular to the clamping plane. In clamping devices according to Figs. 1A, 2A, 3A, 4A, 5A, the main axis 9 runs centrally through the shaft along its longitudinal axis.

[0118] Along the circumference of the housing 3 or the opening 14, one or more clamping surfaces 7 are located. In the event of elastic deformation of the housing 3 in the area of ​​the clamping element 8 or the clamping surface 7, these surfaces exert a clamping force on the outer circumference of the object 5, thereby clamping the object 5. For effective opening and closing of the clamping device 10 with respect to the object 5 to be clamped, without risk of damaging the object 5, a symmetrical distribution of the clamping force along the clamping surface 7 or along the circumference of the object 5 is desirable. An asymmetrical distribution of the clamping force can lead to damage to the object 5. Preferably, one or both contact surfaces 101, 102 within the clamping plane are circular. Preferably, the clamping surface 7 within the clamping plane is circular. The clamping element 8 can be annular.All ring- or circular-shaped components described herein can each, individually or in combination, have as their center point the intersection of the main axis 9 with the clamping plane (e.g. center point of the opening 14).

[0119] Figure 5B shows one of the two housing parts 3a (here the upper housing part 3a from Fig. 5A), as well as one of the two spring plates 1a, 1b of the spring 1. The illustrated spring plate 1a of the spring 1 extends from a first contact surface 101 inside the housing part 3a to a second contact surface 102 inside the housing part 3a and can contact it. The first contact surface 101 is arranged radially further outwards from the center of the opening 14 than the second contact surface 102.

[0120] Figure 5C shows the section of the housing part 3a shown in Figure 5B in which the upper plate ta of the spring 1 meets the first contact surface 101 and is preferably in contact with it. Figure 5D shows the section of the housing part 3a shown in Figure 5B in which the upper plate ta of the spring 1 meets the second contact surface 102 and is preferably in contact with it. However, it is also possible that one or more further components are located radially between the spring plate ta and one or more of the contact surfaces 101, 102, via which the spring plate ta exerts its spring force on the contact surfaces 101, 102. HEMA Maschinen- und Apparate schütz GmbH

[0121] H50125WO

[0122] September 25, 2025

[0123] As can be seen in Figures 5B and 5D, the inner surfaces of the housing part 3a, between which the spring plate 1a is clamped in the recess, can be straight or flat. During assembly, each of the spring plates 1 is inserted along the straight or flat inner surfaces of the housing part 3a through the opening 12 into the recess 11 of the corresponding housing part in the direction of the main axis 9 of the clamping devices 10, until the respective spring plate abuts a stop 112, 122 at the end of each of the two contact surfaces 101, 102 and therefore cannot be inserted further into the recess 11. Since the extent of the spring plate 1a in the clamping plane or in the radial direction of the annular recess is greater than the extent of the interior space defined by the housing part, the spring plate 1a is bent or pre-tensioned in its initial, unpressurized state.

[0124] As shown in Figure 6, the housing of the known clamping devices comprises two housing parts 3a, 3b (each with a spring plate la, ib), which are preferably fastened together with fasteners such as screws and mounted in such a way that, in the assembled state, the two housing parts 3a, 3b define an interior space between them within the housing, in which the spring and its annular spring plates la, ib are arranged. This assembly, in which the end faces of the clamping elements 8 are arranged facing each other and adjacent to one another, creates the axial force F_ax shown in Figure 6, which presents a resistance to the movement of the spring plates la, ib during their radial movement and is therefore detrimental to the efficient transmission of the clamping force to the object to be clamped.

[0125] This axial force can be eliminated by the measures described in more detail below, which reduces the housing resistance and enables efficient transmission of a higher clamping force to the object to be clamped.

[0126] Figures 7A to 7B show an embodiment of the housing part 3c according to the invention, which can be part of the housing 3 shown in Figures 1A to 4B.

[0127] The housing part 3c is for a pneumatic clamping and / or braking device and comprises: a first annular recess 11a for clamping a first annular spring plate ta; a first clamping element 8_i comprising a first end piece 8a, wherein the first end piece 8a has a first end surface 8f and a first clamping surface 7a, wherein the first clamping element 8_i is designed when the first spring plate ta is positioned in the first recess 11a between a first contact surface defined by the first recess 11a. HEMA Maschinen- und Apparate schütz GmbH

[0128] H50125WO

[0129] September 25, 2025

[0130] 101 and a second contact surface 102 defined by the first recess na, such that a first end of the first spring plate la is supported on the first contact surface 101 defined by the first recess 11a and a second end of the first spring plate la presses on the second contact surface 102 defined by the first recess 11a, to transmit a first clamping and / or braking force to a first object 5 to be clamped and / or braked via the first clamping surface 7a; a second annular recess 11b for clamping a second annular spring plate ib;a second clamping element 8_2 comprising a second end piece 8a, wherein the second end piece 8a has a second end surface 8f and a second clamping surface 7b, wherein the second clamping element 8_2 is designed such that the second spring plate ib is positioned in the second recess 11b between a first contact surface 101 defined by the second recess 11b and a second contact surface defined by the second recess 11b;

[0131] 102 is clamped, such that a first end of the second spring plate ib is supported on the first contact surface 101 defined by the second recess 11b and a second end of the second spring plate ib presses onto the second contact surface 102 defined by the second recess 11b, to transmit a second clamping and / or braking force to a second object 5 to be clamped and / or braked via the second clamping surface 7b; and wherein the first end surface 8f of the first clamping element 8_i and the second end surface 8f of the second clamping element 8_2 are arranged facing away from each other, and preferably oriented in opposite directions.

[0132] The first clamping and / or braking force can be applied in a first clamping plane Kl, which is spanned by two vectors, each forming a radius (R, cf. Fig. 5A) of the first annular recess 11a and extending a longitudinal axis LAi of the first end piece transversely, preferably perpendicularly, to the first clamping plane Kl, and / or the second clamping and / or braking force can be applied in a second clamping plane K2, which is spanned by two vectors, each forming a radius R of the second annular recess 11b and extending a longitudinal axis LA2 of the second end piece transversely, preferably perpendicularly, to the second clamping plane K2, preferably wherein the first end surface 8f of the first clamping element 8_1 and the second end surface 8f of the second clamping element 8_2 are oriented in opposite directions of the longitudinal axes LAi, LA2 of the end pieces.

[0133] The housing part can have a housing beam 17, preferably one-piece or in one piece, which is connected to the two clamping elements 8_i, 8_2 and extends (radially) between an outer edge and an inner edge of the housing part 3c and (axially) between the recesses 11a, 11b, preferably wherein the housing beam 17 forms the first annular recess 11a on a first beam surface and rests on a HEMA Maschinen- und Apparate schütz GmbH

[0134] H50125WO

[0135] 25.09.2025 second beam surface, which is facing away from and / or opposite to the first beam surface, forms the second ring-shaped recess nb.

[0136] The housing beam can extend with its longitudinal axis LA3 transversely to the longitudinal axis LAi, LA2 of the first and / or second end piece and / or housing section 18, and preferably substantially parallel to the first and / or second clamping plane Ki, K2. The first end piece can be connected to the second end piece by means of the housing section 18 extending continuously from the first end piece to the second end piece.

[0137] The first annular recess 11a can be open in the direction of the longitudinal axis LAi of the first end piece and / or the second annular recess 11b can be open in the direction of the longitudinal axis LA2 of the second end piece.

[0138] According to a particularly preferred measure for reducing the housing resistance, the first beam surface has a first cutout 19a in the area of ​​the first annular recess 11a and / or the second beam surface has a second cutout 19b in the area of ​​the second annular recess 11b, wherein preferably for each of the cutouts 19a, 19b the spring plate clamped in the respective annular recess (cf. aa, bb in Fig. 11) extends over the cutout.

[0139] As shown in Fig. 7B in combination with the double arrows in Fig. 11, preferably one or more of the cutouts 19a, 19b can be designed such that the housing beam 17 in the area adjacent to the cutout 19a, 19b is designed to expand in the radial direction and relax again in the radial direction in response to the pressing of the spring plate ta, ib clamped in the respective annular recess 11a, 11b onto the second contact surface 102 defined by the respective annular recess 11a, 11b.

[0140] Optionally, an opening O (dotted rectangle in Fig. 7B), designed as a through-hole through the housing beam 17, can be provided in the area of ​​the housing beam 17 that extends between and adjacent to the cutouts 19a, 19b. Through this opening O, pressure medium can pass from the area of ​​cutout 19a to the area of ​​cutout 19b.

[0141] The inventors have discovered that for each of the cutouts 19a, 19b of each of the housing part 3c described herein, the following sizes, individually or in any combination, are particularly suitable for adjusting this radial extensibility of the housing beam 17 particularly effectively and to pronounce it particularly strongly: HEMA Maschinen- und Apparate schütz GmbH

[0142] H50125WO 25.09.2025 a cutout length AL, preferably 3 to 12 mm, and / or a thickness D, preferably 0.3 to 1 mm, of the housing beam 17 in an area adjacent to the cutout 19a, 19b, and / or one or more radii of curvature RC (on each of the curved contours of the cutouts 19a, 19b, see Fig. 7B, there labelled by way of example for 2 of the 4 curvatures), preferably 0.2 to 1.2 mm, of the beam surface in question; and / or

[0143] Position of the opening O radially along the housing beam 17, wherein the position is preferably radially centered in the area of ​​the housing beam extending between and adjacent to the cutouts 19a, 19b; and / or

[0144] Length of the opening O radially along the housing beam 17, which length is preferably 1.5 to 8 mm.

[0145] Figures 8A to 8B show a housing part 3c according to the invention with the associated spring plate la or ib, which is clamped in the recess 11, 11a, 11b between the first contact surface 101 and the second contact surface 102.

[0146] As a further preferred measure, which can be implemented in the housing part 3c as an alternative or additional measure to the measures for the extensibility of the housing beam 17 according to Figures 7A and 7B, is the tapering in the clamping element 8, 8_1, 8_2 mentioned at the outset and shown in more detail in Figures 8A and 8B. Preferably, one or more of the clamping elements 8, 8_i, 8_2 have an arm 8b adjacent to the corresponding end piece 8a of the clamping element, wherein a section of the arm tapers towards the adjacent end piece. This tapering allows the clamping element to be designed more flexibly, thus also reducing the housing resistance and enabling the clamping force to be transmitted more effectively to the object to be clamped.

[0147] If, by ventilating or applying a pressure medium in the second (inner) pressure chamber 2, a force Fi causes the spring plate la or ib to bend, this bending of the spring plate results in a spring force F2 with which one end of the spring plate presses against the second contact surface 102. The spring force F2 acting on the second contact surface 102 causes a rotation and / or elastic deformation of the clamping element 8 (here and in the following referred to as 8_1, 8_2). The clamping element 8 comprises an arm 8b and an end piece 8a adjacent to the arm 8b with a clamping surface 7, wherein the clamping element 8 is designed to transmit a clamping and / or braking force F3 to an object 5 to be clamped and / or braked via the clamping surface 7, wherein a section 8c of the arm 8b tapers (preferably gradually) towards the end piece 8a, as shown in Figures 8A and 8B. HEMA Maschinen- und Apparate schütz GmbH

[0148] H50125WO

[0149] 25.09.2025 shown in more detail and with examples.

[0150] In Fig. 8A, the tapering of arm section 8c is shown by way of example as a continuous and preferably gradual reduction in cross-section. However, this need not be the case within the scope of this disclosure. Other possibilities for realizing the tapering are conceivable.

[0151] The clamping element 8 can be designed or be elastic such that the clamping element forms a lever arm section 8d which is designed to deform elastically by pressing the spring plate la or ib onto the second contact surface 102 of the housing part 3a or 3b with spring force F2 and thereby rotate about a pivot point D such that the clamping surface 7 of the clamping element 8 transmits the clamping and / or braking force F3 to the object 5 to be clamped and / or braked.

[0152] The pivot point D can be in the area around or within the arm 8b, for example in the area marked D in Figure 8A. Other positions for D are possible.

[0153] The end piece 8a of the clamping element 8 forms a section of a lever arm 8d along the clamping surface 7. The action of the spring force F on the second contact surface 102, which here faces away from and opposite the clamping surface 7, causes the lever arm 8d to rotate about the pivot point D such that the end Ri and the end R2 of the lever arm 8d each move towards the object 5 to be clamped. The second end R2 of the lever arm section 8d can be closer to the pivot point D than the first end Ri of the lever arm section 8d and can each be located in the region of the boundaries of the clamping surface 7. The end Ri moves by a radial stroke Hi towards the object to be clamped, and the clamping surface 7 contacts the object 5 in the region of Ri. The end R2 moves by a radial stroke H2 towards the object to be clamped, and the clamping surface 7 contacts the object 5 in the region of R2.The resulting first radial stroke Hi can be one to ten times, preferably 1.25 to five times, particularly preferably 1.35 to two times, the resulting second radial stroke H2.

[0154] Thus, the bending force Fi generates a spring force F2, which in turn generates a clamping force F3. This clamping force acts on the object 5 to be clamped via the clamping surface 7 in the area of ​​the lever arm 8d of the clamping element 8, clamping it. The device is thus brought into the closed position. HEMA Maschinen- und Apparate schütz GmbH

[0155] H50125WO

[0156] September 25, 2025

[0157] The distance Li from the first end Ri of the lever arm section to the pivot point D can be selected such that the first radial stroke Hi is at least 0.13 mm, preferably at least 0.15 mm, and particularly preferably at least 0.17 mm. The distance L2 from the pivot point D to the second end Ri of the lever arm section 8d and the taper can be selected such that the second radial stroke H2 is at least 0.06 mm, preferably at least 0.07 mm, and particularly preferably at least 0.08 mm.

[0158] Such radial strokes are suitable for clamping and / or braking a wide variety of common objects of different dimensions (e.g., shafts), and for avoiding typical thermally induced frictional contacts. Preferably, the distance Li is 1 mm to 6 mm, 2 mm to 5 mm, or 2 mm to 4 mm. L2 is preferably 0.5 mm to 3 mm or 0.75 mm to 1.5 mm.

[0159] The tapering can be so pronounced that the thinnest thickness or smallest extent of the cross-section, Di, of section 8c of arm 8b at the end of section 8c facing end piece 8a is less than 85%, 80%, 75%, 70%, 60%, or 50% of the thickness or extent of the cross-section, D2, of section 8c of arm 8b at the (opposite) end of section 8c facing away from end piece 8a. This reduces the housing resistance particularly effectively.

[0160] The tapered section of arm 8b can have one or more recesses 8e, 8e,i, 8e,2 in arm 8b. In the example of Fig. 8B, the arm section is tapered towards the end piece 8a by having the recesses 8e,i and 8e,2, each of which causes a tapering towards the end piece 8a. The recesses can each have a depth, ti / 2 (see Fig. 8B: depth ti / 2 measured as the distance of the deepest point at DI,I / DI,2 of the respective recess 8e,i, 8e,2 from the extrapolation (dashed line indicative in Fig. 8B) of the surface adjacent to the recess at D2,I / D2,2 of the arm section across the recess 8e,i, 8e,2), of 10% to 50%, preferably 10% to 35%, particularly preferably 15% to 25%, of the greatest thickness or greatest extent of the cross-section, D2,I,D2,2 of the arm 8b in the area of ​​the respective recess 8e,i, 8e,2.The inventors have discovered that these values ​​each make a particularly effective contribution to reducing the case resistance without negatively affecting the stability of the case.

[0161] The one or more recesses 8e can have at least one recess with a rounded contour, preferably with a radius of curvature of 0.25 to 0.75 mm, preferably 0.4 mm to 0.6 mm. This also results in a particularly effective HEMA Maschinen- und Apparate schütz GmbH

[0162] H50125WO 25.09.2025

[0163] Contribution provided to the reduction of the casing resistance, as the inventors have discovered.

[0164] As also shown in Figure 8B, the one or more recesses 8e can be two or more wave-shaped recesses 8e,i, 8e,2, each having this radius of curvature in the area of ​​the rounded wave troughs (at Di,i, Di,2 of the recesses 8e,i, 8e,2) and, if applicable, wave crests (at D2,I, D2,2 of the recesses 8e,i, 8e,2). Furthermore, the wave troughs can each have the aforementioned values ​​for the depth 1 1 / 2. This also provides particularly effective contributions to reducing the housing resistance without negatively affecting the stability of the housing.

[0165] The continuous (and possibly gradual) tapering of arm section 8c towards end piece 8a, as exemplified in Figure 8A, can also be combined with the (e.g., wave-shaped) recesses 8e,i, 8e,2, as shown in Figure 6B, superimposed in arm section 8c (cf. Figure 8A) to further reduce the housing resistance. In other words, the respective values ​​for Di and D2 from recess to recess (if several recesses 8e are present) in arm section 8c towards end piece 8a decrease due to the continuous reduction in the cross-section or thickness of arm 8b along arm section 8c.

[0166] The continuous decrease in the cross-section or thickness of the arm 8b across section 8c towards the end piece 8a, and the additional taper towards the end piece 8a formed by each of the recesses 8e, can be such that the lowest value for Di,i in the region of the recess 8e,i closest to the end piece 8a is 85% or less, 80% or less, 75% or less, 70% or less, 60% or less, or 50% or less of the highest value of D2,2 in the region of the recess 8e,2 furthest from the end piece 8a. This significantly reduces the housing resistance without noticeably affecting the housing's stability. A tapered section 8c of the arm 8b can then extend both between Di,i and D2,I or D2,2 and D2,2 of each recess 8e,i, 8e,2, and between Di,i and D2,2, the latter of which can correspond (approximately) to Di and D2 from Fig. 8A.

[0167] The tapering according to the invention allows the housing resistance to be reduced, thereby transferring a larger proportion of the force F2 to the force F3 and enabling a longer radial stroke H2 than with conventional clamping devices that do not have a tapering. Values ​​for R2 of 50% to 75% of Ri are preferably achievable. This also results in a larger proportion of the clamping surface 7 being in contact with the object. HEMA Maschinen- und Apparate schütz GmbH

[0168] H50125WO

[0169] September 25, 2025

[0170] 5 and wear is reduced. These advantages are achieved without the structural changes leading to a reduction in the closing and opening speed of the clamping device 10 or requiring significantly higher manufacturing effort. The manufacturing and dynamics of the spring plates a1, b1 can therefore remain unchanged as desired.

[0171] The measures from Figures 7A and 7B (especially cutouts 19a, 19b in beam 17) and from Figures 8A and 8B (tapering in the clamping element 8, 8_1, 8_2) work synergistically in combination to reduce the housing resistance and its consequences such as increased clamping force F3 and reduced wear on clamping elements 8 and object 5.

[0172] Figure 9 shows a preferred embodiment of the housing part 3c according to the invention, in which the tapering shown in Figure 8B is realized.

[0173] The housing part 3c is for a pneumatic clamping and / or braking device and comprises: a first annular recess 11a for clamping a first annular spring plate ta; a first clamping element 8_i comprising a first end piece 8a, wherein the first end piece 8a has a first end surface 8f and a first clamping surface 7a, wherein the first clamping element 8_i is designed when the first spring plate ta is positioned in the first recess 11a between a first contact surface defined by the first recess 11a

[0174] 101 and a second contact surface 102 defined by the first recess 11a, such that a first end of the first spring plate ta is supported on the first contact surface 101 defined by the first recess 11a and a second end of the first spring plate ta presses onto the second contact surface 102 defined by the first recess 11a, to transmit a first clamping and / or braking force to a first object 5 to be clamped and / or braked via the first clamping surface 7a; a second annular recess 11b for clamping a second annular spring plate ib;a second clamping element 8_2 comprising a second end piece 8a, wherein the second end piece 8a has a second end surface 8f and a second clamping surface 7b, wherein the second clamping element 8_2 is designed such that the second spring plate ib is positioned in the second recess 11b between a first contact surface 101 defined by the second recess 11b and a second contact surface defined by the second recess 11b;

[0175] 102 is clamped, such that a first end of the second spring plate ib is supported on the first contact surface 101 defined by the second recess 11b and a second end of the second spring plate ib presses onto the second contact surface 102 defined by the second recess 11b, transmitting a second clamping and / or braking force to a second object 5 to be clamped and / or braked via the second clamping surface 7b; and wherein the first end surface 8f of the first clamping element 8_i and the second end surface 8f of the second clamping element 8_2 are arranged facing away from each other, and preferably oriented in opposite directions.

[0176] In this embodiment, the clamping elements 8_i, 8_2 each have an arm 8b adjacent to the corresponding end piece 8a of the clamping element, with a section of the arm tapering towards the adjacent end piece. In Figure 9, the tapering is implemented at least also by means of the recesses 8e in the arm of the respective clamping element 8_1, 8_2. However, other implementations, as described in connection with Figures 8A, 8B, are possible alternatively or additionally.

[0177] As shown in Figure 9, in this embodiment of the housing part 3c according to the invention, the cutouts 19a, 19b explained in connection with Figure 7B are optional. For example, instead of these cutouts 19a, 19b, the recesses in the housing part in the area of ​​the clamping element shown in Figure 6 and known from the prior art can be used, for example, if the housing parts 3a, 3b from the prior art are used as a cover for the housing part 3c, as shown in Figures 14 and 15. This may be desirable in order to reuse existing housing components 3a, 3b wherever possible and shows that the housing part according to the invention can also be used as a retrofit for existing housing parts 3a, 3b and therefore, in such cases, the additional material and process effort can be kept moderate.

[0178] Figures 10A and 10B, however, show preferred covers 15, 16 according to the invention for embodiments of the housing part 3c according to the invention. These covers 15, 16 ensure that the axial force F_ax (see Fig. 6) can be completely eliminated. Figures 11 to 13 below show how these covers 15, 16 can be used in combination with the housing part 3c according to the invention.

[0179] The housing part 3c according to the invention can be easily integrated into a clamping device 10 either with the new covers 15, 16 according to the invention or with the existing conventional housing parts 3a, 3b according to the invention.

[0180] Figure 11 shows a preferred embodiment of the clamping and / or braking device 10 according to the invention, in which the embodiment of the housing part 3c according to the invention shown in Figures 7A and 7B, including the spring plates a1, b1 clamped therein, and the preferred covers 15 shown in Figure 10A are realized, wherein each of the two HEMA Maschinen- und Apparate schütz GmbH

[0181] H50125WO 25.09.2025

[0182] The covers 15 cover the respective annular recesses 11a, 11b in which one of the defect plates 1a, 1b is clamped. By using the housing part 3c according to the invention, particularly in conjunction with the covers 15, no axial force F_ax (see Fig. 6) occurs at the clamping elements 8_1, 8_2, and a higher clamping force F3 (see Fig. 8A) can be transmitted to the object 5 to be clamped.

[0183] Furthermore, the cutouts 19a, 19b, which are preferably also present in this embodiment, cause an increased radial extensibility of the housing part 3c, at least in the area of ​​the housing beam 17 located between the cutouts 19a, 19b (see double arrows in Fig. 11), which in turn leads to a uniform radial, and essentially linear, movement of the clamping elements 8_1, 8_2 and of the housing section 18 located between them and connecting the clamping elements (see double arrows in Fig. 11). The rotation of the end piece 8a of each clamping element 8_i, 8_2 indicated in Figure 8A and the associated preferential loading of the clamping surface at the (free) end of the end piece (at Ri, see Fig. 8A) can be avoided, which reduces the wear of the clamping elements 8_i, 8_2 and the object to be clamped and also results in a more even application of clamping force to the object.

[0184] Optionally, the tapering shown in Figures 8A and 8B can also be implemented in this embodiment, which further enhances the effects described above by additionally reducing the housing resistance.

[0185] Figure 12 shows a tandem of the preferred embodiment of the clamping and / or braking device 10 according to the invention, in which the embodiment of the housing part according to the invention shown in Figures 7A and 7B and the preferred covers 15, 16 shown in Figures 10A and 10B are implemented. Optionally, the tapering shown in Figures 8A and 8B can also be implemented.

[0186] In comparison to the embodiment according to Fig. 11, this tandem assembly includes the cover 16 according to the invention and a further housing part 3c according to the invention with two spring plates clamped therein. The tandem assembly allows the clamping force exerted on the object to be clamped to be multiplied, in particular doubled.

[0187] Here, two housing parts 3c according to the invention are arranged in series or one above the other, with the covers 15, 16 covering the respective annular recesses 11a, 11b. The cover 16 is arranged between the two housing parts 3c. As a result, no axial force F_ax occurs at the clamping elements 8_1, 8_2. Furthermore, HEMA Maschinen- und Apparate schütz GmbH

[0188] H50125WO 25.09.2025

[0189] Cutouts 19a, 19b, which are also present in this embodiment, show an increased radial extensibility of the housing parts 3c, as shown in Fig. 11.

[0190] Figure 13 shows a tridem of the preferred embodiment of the clamping and / or braking device 10 according to the invention, in which the embodiment of the housing part 3c according to the invention shown in Figures 7A and 7B and the preferred covers 15, 16 shown in Figures 10A and 10B are implemented. Optionally, the tapering shown in Figures 8A and 8B can also be implemented.

[0191] In comparison to the embodiment according to Fig. 12, this tridem incorporates a further cover 16 and a further housing part 3c according to the invention, with two spring plates clamped therein. The tridem allows the clamping force exerted on the object to be clamped to be multiplied, in particular tripled.

[0192] Here, three housing parts 3c according to the invention are arranged in a row or one above the other, with the covers 15, 16 covering the respective annular recesses 11a, 11b. The cover 16 is arranged between two housing parts 3c. As a result, no axial force F_ax acts on the clamping elements 8_1, 8_2. In addition, the cutouts 19a, 19b, which are also present in this embodiment, result in increased radial extensibility of the housing parts 3c, as shown in Fig. 11.

[0193] The use of the housing part according to the invention with the covers, as shown in Figures 11 to 13, results in a more even distribution of the clamping element contact points along the object to be clamped, such as a shaft. This can provide better support for the object and reduce stress on both the object and the clamping elements.

[0194] Figure 14 shows a tandem of the preferred embodiment of the clamping and / or braking device 10 according to the invention, in which the embodiment of the housing part 3c according to the invention shown in Figure 9, with or without tapering from Figures 8A and 8B and / or with or without cutouts 19a, 19b from Figures 7A, 7B, is realized and in which the housing parts 3a, 3b shown in Figure 6 from the prior art are realized as covers.

[0195] Here, a housing part 3c according to the invention is arranged between the housing parts 3a, 3b, so that the conventional housing parts 3a, 3b are used as covers for the respective annular recesses 11a, 11b. This nevertheless creates two HEMA Maschinen- und Apparate schütz GmbH

[0196] H50125WO

[0197] September 25, 2025

[0198] Force centers are created at the pairs of clamping elements 8_1, 8_2 (tandem). This allows for a particularly compact design using new (3c) and existing (3a, 3b) housing components. The tandem configuration allows the clamping force applied to the object to be clamped to be multiplied, in particular doubled.

[0199] Figure 15 shows a tridem of the preferred embodiment of the clamping and / or braking device 10 according to the invention, in which the embodiment of the housing part 3c according to the invention shown in Figure 9, with or without tapering from Figures 8A and 8B and / or with or without cutouts 19a, 19b from Figures 7A, 7B, is realized and in which the housing parts 3a, 3b shown in Figure 6 from the prior art are realized as covers.

[0200] Here, two housing parts 3c according to the invention are arranged in series or one above the other, with the conventional housing parts 3a, 3b being used as covers for the respective annular recesses 11a, 11b, so that three force centers are nevertheless created at the pairs of clamping elements 8_1, 8_2 (tridem). Furthermore, each of the two adjacent housing parts 3c covers the other. This allows for a particularly compact design using both new and existing housing parts.

[0201] The tridem allows the clamping force applied to the object to be clamped to be multiplied, in particular tripled.

[0202] In general, the representation of the tandems and tridems described here is only exemplary, since the housing part 3c according to the invention allows for a manufacturing-efficient scaling to an even greater number of terminals in one device.

[0203] To assemble a tandem or tridem based on two or three examples of the conventional device from Fig. 6, complex machining of the outer surfaces of the housing parts 3a, 3b shown in Fig. 6 is required, as well as complex measures to enable continuous fixation of the housing parts 3a, 3b. However, these complex manufacturing steps are partially or even completely eliminated by using the housing part 3c according to the invention for assembling tandems or tridems, as can be seen from Figures 11 to 15. This applies even when the housing parts 3a, 3b are used as a cover, as shown in Figures 14 and 15.

[0204] Each of the clamping devices according to the invention shown in Figures 11 to 15 10 HEMA Maschinen- und Apparate schütz GmbH

[0205] H50125WO 25.09.2025, in particular, comprises the following: a housing 3 comprising: one or more housing parts 3c as described herein; and for each of the housing parts 3c, a first cover assigned to the housing part 3c (see 15, 3a, 3c) and a second cover assigned to the housing part (see 15, 16, 3b, 3c); wherein for each of the housing parts 3c: the first cover covers the first recess 11a and the second cover covers the second recess 11b such that the recesses 11a, 11b together form an interior space 13 within the housing 3, wherein the interior space 13 comprises a spring 1 arranged therein, which spring 1 comprises a first annular spring plate 1a and a second annular spring plate 1b.wherein the first spring plate la is clamped between the first contact surface 101 defined by the first recess 11a and the second contact surface 102 defined by the first recess 11a, and the second spring plate ib is clamped between the first contact surface 101 defined by the second recess 11b and the second contact surface 102 defined by the second recess 11b, such that at least one pressure chamber 2, 4 is formed in the interior 13, which is at least partially bounded by the spring plates la, ib, wherein the pressure chamber 2, 4 can be vented or aerated and pressurized with an overpressure of a pressure medium that can be supplied to the housing 3, and wherein the spring plates la, ib are arranged relative to the at least one pressure chamber 2, 4 such that venting or aerating the pressure chamber 2, 4 or pressurizing the pressure chamber 2, 4 causes a bending of at least one of the spring plates la,ib is changeable and thereby the clamping and / or braking device 10 changes between an open state in which an object 5 to be clamped and / or braked is spaced away from the clamping surfaces 7, and a closed state in which one or more of the clamping surfaces 7 transmit a clamping and / or braking force to the object 5.

[0206] Figures 11 to 15 show that the new housing part 3c according to the invention can be used flexibly depending on the application. For example, if a greater clamping force is required, the housing part 3c according to the invention can be used with the novel covers 15, 16 according to the invention. However, if a more compact design, e.g., for clamping shorter objects, and the use of existing components are preferred, then the use of the novel housing part 3c in combination with the conventional housing parts 3a, 3b as covers is advantageous.

[0207] The housing part 3c according to the invention can also be flexibly supplemented with additional measures to reduce the housing resistance, such as the cutouts 19a, 19b on the housing beam or the tapering on the clamping element, in order to further reduce the clamping force. HEMA Maschinen- und Apparate schütz GmbH

[0208] H50125WO

[0209] 25.09.2025 increase and apply the force particularly evenly to the object being clamped.

[0210] Preferred embodiments of the invention claimed by the following claims are described in the preceding description and figures. The optional features disclosed in the preceding description, the claims, and the drawings can be used individually or in any combination for the implementation of the invention claimed herein according to the accompanying claims in its various embodiments. The various aspects and embodiments described above can be combined to create further embodiments. These and other modifications can be made to the embodiments in light of the detailed description above.In general, the terms used in the following claims should not be interpreted as limiting the claims to the specific aspects and embodiments disclosed in the description and the claims, but rather as encompassing all possible embodiments together with the full scope of the equivalents to which these claims refer.

Claims

HEMA Maschinen- und Apparate schütz GmbH H50125WO September 25, 2025 REQUIREMENTS 1. A housing part (3c) for a pneumatic clamping and / or braking device (10), the housing part (3c) comprising: a first annular recess (11a) for clamping a first annular spring plate (1a);a first clamping element (8_i) comprising a first end piece (8a), wherein the first end piece (8a) has a first end surface (8f) and a first clamping surface (7a), wherein the first clamping element (8_i) is designed such that the first spring plate (1a) is clamped in the first recess (11a) between a first contact surface (101) defined by the first recess (11a) and a second contact surface (102) defined by the first recess (11a) such that a first end of the first spring plate (1a) is supported on the first contact surface (101) defined by the first recess (11a) and a second end of the first spring plate (1a) presses on the second contact surface (102) defined by the first recess (11a), exerting a first clamping and / or braking force on a first object (5) to be clamped and / or braked via the first clamping surface (7a) to transfer; a second annular recess (11b) for clamping a second annular spring plate (ib);a second clamping element (8_2) comprising a second end piece (8a), wherein the second end piece (8a) has a second end surface (8f) and a second clamping surface (7b), wherein the second clamping element (8_2) is designed such that the second spring plate (ib) is clamped in the second recess (11b) between a first contact surface (101) defined by the second recess (11b) and a second contact surface (102) defined by the second recess (11b) such that a first end of the second spring plate (ib) is supported on the first contact surface (101) defined by the second recess (11b) and a second end of the second spring plate (ib) presses on the second contact surface (102) defined by the second recess (11b), exerting a second clamping and / or braking force on a second object (5) to be clamped and / or braked via the second clamping surface (7b) to transfer;characterized in that the first end surface (8f) of the first clamping element (8_i) and the second end surface (8f) of the second clamping element (8_2) are arranged facing away from each other and preferably oriented in opposite directions.

2. The housing part (3c) according to claim 1, characterized in that the first HEMA Maschinen- und Apparate schütz GmbH H50125WO September 25, 2025 The end piece is connected to the second end piece by means of a housing section (18) extending continuously from the first end piece to the second end piece.

3. The housing part (3c) according to claim 1 or 2, characterized in that the first clamping and / or braking force is applied in a first clamping plane (Kl) spanned by two vectors, each forming a radius (R) of the first annular recess (11a), and a longitudinal axis (LAi) of the first end piece extends transversely, preferably perpendicularly, to the first clamping plane (Kl), and / or the second clamping and / or braking force is applied in a second clamping plane (K2) spanned by two vectors, each forming a radius (R) of the second annular recess (11b), and a longitudinal axis (LA2) of the second end piece extends transversely, preferably perpendicularly, to the second clamping plane (K2), preferably wherein the first end surface (8f) of the first clamping element (8_i) and the second end surface (8f) of the second clamping element (8_2) are oriented in opposite directions of the longitudinal axes (LAi, LA2) of the end pieces. are.

4. The housing part (3c) according to claim 1, 2 or 3, characterized in that the housing part has a housing beam (17), preferably one-piece or integral, which is connected to the two clamping elements (8_i, 8_2) and extends between an outer edge and an inner edge of the housing part and between the recesses (11a, 11b), preferably wherein the housing beam (17) forms the first annular recess on a first beam surface and forms the second annular recess on a second beam surface which is facing away from and / or opposite to the first beam surface.

5. The housing part (3c) according to claim 4, characterized in that the housing beam extends with its longitudinal axis (LA3) transversely to the longitudinal axis (LAi, LA2) of the first and / or second end piece, and preferably substantially parallel to the first (Kl) and / or second (Kl) clamping plane.

6. The housing part (3c) according to claim 3, 4 or 5, characterized in that the first annular recess (11a) is open in the direction of the longitudinal axis (LAi) of the first end piece and / or the second annular recess (11b) is open in the direction of the longitudinal axis (LA2) of the second end piece.

7. The housing part (3c) according to any one of the preceding claims 2 to 6, wherein HEMA Maschinen- und Apparate schütz GmbH H50125WO characterized 25.09.2025 in that the longitudinal axis (LA3) of the housing beam (17) extends transversely to a longitudinal axis (LAi, LA2) of the continuous housing section (18) and is preferably connected to it in one piece or integrally.

8. The housing part (3c) according to any one of the preceding claims 4 to 7, characterized in that the first beam surface in the area of ​​the first annular recess (11a) forms a first cutout (19a) and / or the second beam surface in the area of ​​the second annular recess (11b) forms a second cutout (19b), preferably wherein for each of the cutouts (19a, 19b) the spring plate clamped in the respective annular recess extends over the cutout.

9. The housing part (3c) according to claim 8, characterized in that one or more of the cutouts (19a, 19b) are designed such that the housing beam (17) in the area adjacent to the cutout (19a, 19b) is designed to expand in a radial direction in response to the pressing of the spring plate (1a, 1b) clamped in the relevant annular recess (11a, 11b) onto the second contact surface (102) defined by the relevant annular recess (11a, 11b).

10. The housing part (3c) according to claim 9, characterized in that for each of the one or more cutouts: a cutout length (AL), preferably 3 to 12 mm, and / or a thickness (D), preferably 0.3 to 1 mm, of the housing beam (17) in an area adjacent to the cutout (19a, 19b), and / or one or more radii of curvature (RC), preferably 0.2 to 1.2 mm, of the beam surface in question, and / or a position and / or radial length of an opening (O) in the area of ​​the housing beam (17) extending between and adjacent to the cutouts (19a, 19b), is configured as follows:are that the housing beam (17) in the area adjacent to the cutout (19a, 19b) is designed to expand in a radial direction in response to the pressing of the spring plate (1a, 1b) clamped in the relevant annular recess (11a, 11b) onto the second contact surface (102) defined by the relevant annular recess (11a, 11b).

11. The housing part (3c) according to any of the preceding claims, wherein HEMA Maschinen- und Apparate schütz GmbH H50125WO 25.09.2025 characterized in that one or more of the clamping elements (8_i, 8_2) has an arm (8b) adjacent to the associated end piece (8a), and a section (8c) of the arm (8b) tapers towards the adjacent end piece (8a).

12. The housing part (3c) according to claim 11, characterized in that the tapered section (8c) of the arm (8b) has one or more recesses (8e,i; 8e,2) in the arm (8b), preferably wherein the recesses each have a depth (ti; t2) of 10% to 50%, 10% to 35% or 15% to 25% of the greatest thickness or greatest cross-sectional area (D2,i; D2,2) of the arm (8b) in the area of ​​the respective recess (8e,i; 8e,2).

13. The housing part (3c) according to claim 12, characterized in that the one or more recesses (8e) have at least one recess with a rounded contour, preferably with a radius of curvature of 0.25 to 0.75 mm.

14. The housing part (3c) according to claim 12 or 13, characterized in that the one or more recesses (8e) are two or more wave-shaped recesses.

15. The housing part (3c) according to any one of the preceding claims 11 to 14, characterized in that each of the clamping elements (8) is designed such that when the second end of the spring plate (1a, 1b) presses on the second contact surface (102), the end piece (8a) of the clamping element (8) is rotated about a pivot point (D) relative to the section (8c) of the arm (8b) and thereby the clamping and / or braking force is transmitted to the object (5) to be clamped and / or braked via the clamping surface (7).

16. The housing part (3c) according to any one of the preceding claims 11 to 15, characterized in that each of the clamping elements (8) has the associated clamping surface (7) on a first side surface of the associated end piece (8a) facing the object and has the second contact surface (102) on a second side surface of the associated end piece (8a), which is preferably facing away from the first side surface and / or the object (5) and / or opposite the first side surface.

17. The housing part (3c) according to any of the preceding claims 11 to 16, characterized in that the section (8c) of the arm (8b) tapers towards the second contact surface (102) and / or in the area of ​​the pivot point. HEMA Maschinen- und Apparate schütz GmbH H50125WO 25.09.2025 18. The housing part (3c) according to any of the preceding claims 11 to 17, characterized in that the tapering, in particular the at least one recess with a rounded contour, is located in the area of ​​the transition of the arm (8b) to the end piece (8a).

19. The housing part (3c) according to any one of the preceding claims 15 to 18, characterized in that the pivot point (D) is arranged within the clamping element (8) or in an area around the clamping element (8), preferably in the area of ​​the section (8c) of the arm (8b) or in the area between the section (8c) of the arm (8b) and the clamping surface (7) or in the area of ​​the end piece (8a).

20. The housing part (3c) according to any of the preceding claims 15 to 19, characterized in that the housing part (3c) is designed such that the rotation is effected by pressing the spring plate (1a, 1b) onto the second contact surface (102), which preferably elastically deforms the clamping element (8).

21. The housing part (3c) according to any one of the preceding claims 15 to 20, characterized in that the end piece (8a) of the clamping element (8) forms a section of a lever arm (8d) along the clamping surface (7), which is designed such that, when the lever arm (8d) is rotated about the pivot point (D), a first end (Ri) of the lever arm section (8a) is moved closer to the object (5) by a first radial stroke (Hi), preferably wherein the first radial stroke (Hi) corresponds to one to ten times, preferably 1.25 to five times, particularly preferably 1.35 to two times, a second radial stroke (H2), by which a second end (R2) of the lever arm section (8a) is moved closer to the object (5) when the lever arm (8d) is rotated about the pivot point (D), which second end (R2) of the lever arm section (8d) is moved closer to the pivot point (D) is located as the first end (Ri) of the lever arm section (8d).

22. The housing part (3c) according to claim 21, characterized in that the first end (Ri) of the lever arm section (8d) lies in the area of ​​a first boundary of the clamping surface (7), which first boundary is preferably furthest from the pivot point (D), and the second end (R2) of the lever arm section (8d) lies in the area of ​​a second boundary of the clamping surface (7), which second boundary is preferably arranged closest to the pivot point (D). HEMA Maschinen- und Apparate schütz GmbH H50125WO September 25, 2025 23. The housing part (3c) according to any one of the preceding claims 21 to 22, characterized in that: the distance (L2) from the pivot point (D) to the second end (Ri) of the lever arm section (8d) and the taper, and / or a cutout length, and / or a thickness of the housing beam (17) in a region adjacent to the cutout (19a, 19b), and / or one or more radii of curvature of the beam surface in question, a position and / or radial length of an opening (O) in the region of the housing beam (17) extending between and adjacent to the cutouts (19a, 19b), is selected orare such that: the second radial stroke (H2) is at least 0.06 mm, preferably at least 0.07 mm, particularly preferably at least 0.08 mm and / or the first radial stroke (Hi) corresponds to one to ten times, preferably 1.25 to five times, particularly preferably 1.35 to two times, a second radial stroke (H2) by which a second end (R2) of the lever arm section (8a) is moved closer to the object (5) when the lever arm (8d) is rotated about the pivot point (D), which second end (R2) of the lever arm section (8d) is closer to the pivot point (D) than the first end (Ri) of the lever arm section (8d).

24. The housing part (3c) according to any one of the preceding claims 15 to 23, characterized in that the tapering is such that the thinnest thickness or the smallest cross-sectional extent (Di; D1,1; Di, 2) of the arm (8b) at the end of the section (8c) facing the end piece (8a) is less than 85%, 80%, 75%, 60%, or 50% of the thickness or cross-sectional extent (D2; D2,1; ​​D2,2) of the arm (8b) that is present at the opposite end of the section (8c) facing away from the end piece (8a).

25. 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) comprising: one or more housing parts (3c) according to any one of the preceding claims; and HEMA Maschinen- und Apparate schütz GmbH H50125WO 25.09.2025 for each of the housing parts (3c), a first cover (15, 3a, 3c) assigned to the housing part (3c) and a second cover (16, 3b, 3c) assigned to the housing part; wherein for each of the housing parts (3c): the first cover (15) covers the first recess (11a) and the second cover covers the second recess (11b) such that the recesses (11a, 11b) together form an interior space (13) within the housing (3), wherein the interior space (13) comprises a spring (1) arranged therein, which spring (1) comprises a first annular spring plate (1a) and a second annular spring plate (1b), wherein the first spring plate (1a) is positioned between the first contact surface defined by the first recess (11a). (101) and the second mounting surface defined by the first recess (11a) (102) is clamped and the second spring plate (ib) is clamped between the first contact surface (101) defined by the second recess (11b) and the second contact surface (102) defined by the second recess (11b), so that at least one pressure chamber (2, 4) is formed in the interior (13), which is at least partially bounded by the spring plates (1a, ib), wherein the pressure chamber (2, 4) can be vented or vented and can be pressurized with a pressure medium that can be supplied to the housing (3), and wherein the spring plates (1a, ib) are arranged relative to the at least one pressure chamber (2, 4) such that by venting or venting the pressure chamber (2, 4) or pressurizing the pressure chamber (2, 4), the bending of at least one of the spring plates (1a, ib) can be changed and thereby the clamping and / or braking device (10) between an open state in which an object (5) to be clamped and / or braked is spaced away from the clamping surfaces (7),and a closed state in which one or more of the clamping surfaces (7) transmit a clamping and / or braking force to the object (5).

26. The clamping and / or braking device (10) according to claim 25, wherein, for each of the housing parts (3c), the at least one pressure chamber comprises a first pressure chamber (4) arranged outside the spring (1) between at least one of the spring plates (1a, 1b) and the housing (3), wherein the first spring plate (1a) is designed to reduce its bending by venting the first pressure chamber (4) or by pressurizing the first pressure chamber (4) in order to, when the first end of the first spring plate (1a) rests on the first recess (11a) defined by the first recess (11a). HEMA Maschinen- und Apparate schütz GmbH H50125WO September 25, 2025 The contact surface (101) is pressed with the second end of the first spring plate (1a) onto the second contact surface (102) defined by the first recess (1a) in such a way that a clamping and / or braking force is transmitted from the first clamping surface (7) to the object (5) to be clamped and / or braked and the clamping and / or braking device (10) changes from the open state to the closed state;and / or wherein the second spring plate (ib) is designed to reduce its bending by venting the first pressure chamber (4) or by pressurizing the first pressure chamber (2, 4) in order to press, with the first end of the second spring plate (ib) resting on the first contact surface (101) defined by the second recess (11b), with the second end of the second spring plate (11b) onto the second contact surface (102) defined by the second recess (11b) in such a way that a clamping and / or braking force is transmitted from the second clamping surface (7) to an object (5) to be clamped and / or braked and the clamping and / or braking device (10) changes from the open state to the closed state.; 27. The clamping and / or braking device (10) according to claim 25 or 26, wherein the clamping and / or braking device (10) is designed for each of the housing parts (3c) such that by venting the first pressure chamber (4) or by pressurizing the first pressure chamber (4), the first contact surface (101) and the second contact surface (102) of at least one of the two recesses (11a, 11b) move away from each other and / or the bending of at least one of the spring plates (1a, 1b) decreases, and thereby the clamping and / or braking device (10) changes from the open state to the closed state.

28. The clamping and / or braking device (10) according to any one of claims 25 to 27, wherein for each of the housing parts (3c): the at least one pressure chamber comprises a second pressure chamber (2), wherein the second pressure chamber (2) is located inside the spring (1) is arranged between the two spring plates (1a, 1b), preferably wherein the clamping and / or braking device (10) is designed such that by venting the second pressure chamber (2) or by applying pressure to the second pressure chamber (2) with overpressure, the first contact surface (101) and the second contact surface (102) of at least one of the two recesses (11a, 11b) move towards each other and / or the bending of at least one of the spring plates (1a, 1b) increases, and thereby the clamping and / or braking device (10) moves from the closed state into the HEMA Maschinen- und Apparate schütz GmbH H50125WO The open state changes on September 25, 2025.

29. The clamping and / or braking device (10) according to any one of claims 25 to 28, wherein one or more of the housing parts (3c) are shaped such that when the clamping and / or braking device (10) changes from the open state to the closed state, the first radial stroke (Hi) of the clamping element (8) towards the object (5) corresponds to one to ten times, preferably 1.25 to five times, particularly preferably 1.35 to two times, the second radial stroke (H2) of the clamping element (8) towards the object (5).

30. The clamping and / or braking device (10) according to any one of claims 25 to 29, wherein the one or more housing parts (3c) comprise two, three or more housing parts (3c) arranged in series according to any one of the preceding claims 1 to 24.

31. The clamping and / or braking device (10) according to claim 30, wherein the second cover (16) of a first housing part of the housing parts also forms the first cover (15) of a second housing part of the housing parts adjacent to the first housing part.

32. The clamping and / or braking device (10) according to claim 31, wherein the second cover (16) of the second housing part also forms the first cover (15) of a third housing part of the housing parts adjacent to the second housing part.

33. The clamping and / or braking device (10) according to any one of claims 25 to 32, wherein the first and / or second cover of at least one of the housing parts is a housing part (3c) according to any one of claims 1 to 24.

34. The clamping and / or braking device (10) according to any one of claims 25 to 33, wherein the first and / or second cover (15, 16) of at least one of the housing parts is another housing part (3a, 3b) comprising: an annular spring plate (1a, 1b); an annular recess (11a, 11b), wherein the annular spring plate (1a, 1b) is clamped between a first contact surface (101) defined by the recess (11a) and a second contact surface (102) defined by the recess (11a); and a clamping element (8) with a clamping surface (7a), wherein the clamping element (8) is designed when a first end of the spring plate (1a, 1b) is against the surface defined by the recess (11a). HEMA Maschinen- und Apparate schütz GmbH H50125WO September 25, 2025 (na) supported on the first defined contact surface (101) and a second end of the spring plate (1a) presses onto the second contact surface (102) defined by the recess (na), to transmit a clamping and / or braking force to an object (5) to be clamped and / or braked via the clamping surface (7a).

35. Use of the housing part according to any one of claims 1 to 24 or the clamping and / or braking device according to any one of claims 25 to 34 for clamping and / or braking an object, in particular a rotatable shaft.

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