Lightweight panel, method for manufacturing a lightweight panel and enclosure

Abstract

The present invention relates to a panel (10) for enclosing a machine tool, in particular for enclosing a secondary section (200b) of the machine tool. Furthermore, a method for manufacturing the panel (10) and an enclosure (100b) are proposed. The panel (10) according to the invention comprises a front surface (10a), a first edge side surface (10b) adjoining the front surface (10a) along a longitudinal side and arranged perpendicular to the front surface (10a), and a second edge side surface (10c) adjoining the front surface (10a) along a transverse side and arranged perpendicular to both the front surface (10a) and the first edge side surface (10b), wherein the panel (10) is formed in one piece and the first edge side surface (10b) and the second edge side surface (10c) are connected to each other by bending.

Description

[0001] The present invention relates to a panel for enclosing a machine tool, in particular for enclosing a secondary area of ​​the machine tool. Furthermore, a method for producing the panel and an enclosure are proposed. background

[0002] Modern machine tools and machining centers usually have a protective enclosure that surrounds their work area (primary area) and, if applicable, auxiliary units (secondary area) during operation. In the primary area of ​​the machine tool, the protective enclosure serves to protect the machine's surroundings from potential hazards, for example, from loose workpieces / components or escaping working media such as coolant, lubricating oil, or inert gas. Accordingly, the protective enclosure in this area must be mechanically stable and media-tight. In the secondary area, the protective enclosure essentially serves as an intrusion guard with significantly lower requirements for mechanical stability and tightness. However, the secondary area, especially in machining centers, takes up a considerable amount of space, so that large protective walls are required to enclose this area. This requires a high level of material usage and manufacturing effort.

[0003] An object of the present invention is to provide a panel, a method for producing the panel and an enclosure which significantly reduce the material usage and the manufacturing effort for at least partially enclosing a machine tool, in particular for enclosing a secondary area of ​​the machine tool.

[0004] To solve these problems, the features of the independent claims are proposed. Advantageous embodiments can be found in the dependent claims.

[0005] A panel according to the invention is characterized in particular by a low wall thickness of less than 2 mm with a length of up to 3 m. This enables a significant reduction in material usage. Furthermore, production of the panel from a single blank, in particular from a standardized sheet metal, is essentially only possible by bending and forming. This allows for a significant reduction in production costs. The rigid design of the panel according to the invention provides advantageous stability and vibration characteristics.

[0006] The panel comprises a front surface and a first edge side surface, which adjoins the front surface on a longitudinal side thereof and is arranged perpendicular to the front surface. The front surface is understood to be a surface that, in the assembled state of the panel, faces away from a machine tool to be surrounded. The front surface of the panel can have a size of 1 m 2 up to 8 m 2 , especially a size of 1 m 2 up to 4.5 m 2 The length / width ratio of the front surface can be in the range of 1 to 4, in particular in the range of 2 to 3.

[0007] The first edge side surface represents a surface at which individual panels adjoin one another in the assembled state. In particular, each panel can comprise two first edge side surfaces that extend along a left and right longitudinal side of the front side surface. In order to represent the arrangement of the first edge side surface perpendicular to the front side surface, the first edge side surface can be bent along each of the two longitudinal sides of the panel at a right angle to the front side surface. In particular, the first edge side surface can be bent backwards from the front side surface at a right angle, i.e., in the assembled state of the panel, a front edge of the first edge side surface can adjoin the front side surface or coincide with a longitudinal edge of the front side surface. The first edge side surface can have a width of 1 cm to 10 cm, in particular of 2 cm to 7 cm.

[0008] Furthermore, the panel comprises a second edge side surface which adjoins the front side surface at a transverse side thereof and is arranged perpendicular to the front side surface and perpendicular to the first edge side surface. In particular, each panel can comprise two second edge side surfaces which extend along an upper and lower transverse side of the front side surface. In order to represent an arrangement of the second edge side surface perpendicular to the front side surface and perpendicular to the first edge side surface, the second edge side surface can be bent at a right angle to the front side surface of the panel along the upper and lower transverse side thereof. In particular, the second edge side surface can be bent backwards from the front side surface at a right angle, i.e. in the assembled state of the panel, a front edge of the second edge side surface can adjoin the front side surface.coincide with a transverse edge of the front side surface. The second edge side surface can have a width of 1 cm to 10 cm, in particular of 2 cm to 7 cm. In particular, the second edge side surface can have substantially the same width as the first edge side surface.

[0009] The panel is preferably formed in one piece, i.e., the panel is essentially made from a single blank, in particular from a sheet metal. The panel is a developable component, i.e., a three-dimensional component whose body can be developed into a plane by geometric transformation. The sheet metal can be a stainless steel, aluminum, or preferably a steel sheet. The sheet metal can have a thickness of 0.5 mm to 1.5 mm, in particular 1 mm.

[0010] The first edge side surface and the second edge side surface of the panel are connected to one another by bending (or bent towards one another (or against one another) to thereby preferably achieve contact). In order to connect the two edge side surfaces, for example, either the first edge side surface or the second edge side surface can contain a recess (e.g. a punched-out notch or gap) into which a corresponding counterpart of the other edge side surface is "bent". In this case, one edge side surface can be at least partially shorter at its outer ends before bending than a transverse or longitudinal side of the front side surface, and the other edge side surface can be at least partially longer than the corresponding transverse or longitudinal side of the front side surface before bending, wherein an extension of one edge side surface corresponds exactly to a shortening of the other edge side surface.After bending, the extension of one edge side surface can be "bent" into the shortening of the other edge side surface. This means that a part of the first or second edge side surface belongs to the other edge side surface after bending and is thus connected to it. In particular, the two first and second edge sides can be connected to each other in this way at all four corners of the panel. It is also possible for both the first and the second edge side surface to be longer than the respective transverse or longitudinal side of the front surface before bending. In this case, the two extensions can be arranged one above the other after bending, thus connecting the two edge side surfaces.

[0011] In this way, a rounded (or chamfered) edge between the first and second edge surfaces of the panel can be easily realized without additional processing steps, such as welding the edge and subsequent chamfering. The rounded edge can, in particular, reduce the risk of injury during panel installation, increase stability, and achieve an attractive appearance.

[0012] According to one embodiment, the front surface can have at least one bead that borders the second edge side surface and extends in the longitudinal direction of the panel. In other words, the bead can extend from an upper transverse edge (top edge) of the front surface of the panel to a lower transverse edge (bottom edge) of the front surface of the panel. Preferably, the bead can extend straight from the top edge to the bottom edge of the panel. However, a curved extension is also possible. The width of the bead can be in a range between 5 cm and 25 cm, and the depth of the bead can be in the range of 1 cm to 5 cm. The bead can be used to stiffen the front surface of the panel, which enables the low sheet thickness in the range of 0.5 to 1.5 mm.

[0013] According to one embodiment, an end face of the at least one bead can be integrated into the second edge side surface by bending. For this purpose, a developed version of the bead can contain sections that protrude beyond a length of the front side surface and are designed such that they can be bent into the second edge side surface as the end face of the bead. For this purpose, the sections can be bent backwards by 90 degrees to form a bead surface and integrated into the second edge side surface by further bending of the individual sections. Preferably, the sections bent in this way can also be fastened to the second edge side surface, for example, riveted to it. This leads to a flat surface along the second edge side surface, even in the region of the bead, which enables easy assembly of the panel and reduces the risk of injury during assembly.

[0014] According to one embodiment, the at least one bead can have a V-shaped, a U-shaped, or a hook-shaped cross-section. The bead cross-sectional shape can be selected based on strength considerations. For example, the bead cross-sectional shape can be selected such that the panel has at least the same, preferably a higher, area moment of inertia than a panel of the same size with a wall thickness of 2 mm or more.

[0015] According to one embodiment, the at least one bead can divide the front surface into at least two equal areas. This results in a uniform distribution of the area moment of inertia with respect to a longitudinal axis of the panel, which can further increase its rigidity. It is also possible to have more than one bead in the front surface of the panel. In this case, the multiple beadings are preferably arranged at an equal distance from one another.

[0016] According to one embodiment, the panel may further comprise a rear side surface that adjoins the first edge side surface and is arranged perpendicular to it and opposite the front side surface. In other words, the rear side surface may be bent 90 degrees relative to the first edge side surface and mounted at a distance from the front side surface that substantially corresponds to the width of the first edge side surface. The rear side surface may have a width of 2 cm to 10 cm, in particular of 2 cm to 7 cm.

[0017] In particular, the rear surface can be designed to fasten the panel to a frame. For this purpose, it can preferably extend along the entire long side of the panel and contain openings designed to receive fastening means. These can preferably be round openings that are evenly distributed along the two long sides of the panel. Other opening shapes (rectangular, polygonal, oval, elongated hole) are, however, also possible. To simplify the installation of the fastening means, the front surface can also contain openings that are opposite the openings in the rear surface. These can preferably be designed as round openings or as elongated holes, although other opening shapes are also possible here.The fastening means can be pushed through the openings in the front surface from the front and rest against an inner side of the rear surface for attachment to the frame. The fastening means can preferably each be a screw connection with a washer that rests flat against the inner side of the rear surface. Alternatively, the screw connection can comprise, for example, a screw with a collar.

[0018] Other fastening methods for mounting the panels to the frame, such as pin and / or cotter pin connections, are also possible.

[0019] By attaching the panel to the rear surface, the front surface is completely flat, and in particular, no fasteners, such as screw heads, protrude from it. This reduces the risk of injury to persons in the secondary area of ​​the machine tool and ensures an attractive appearance of the enclosure.

[0020] According to one embodiment, the panel may further comprise a third edge side surface that extends along and is opposite the second edge side surface. A width of the third edge side surface may correspond to the width of the second edge side surface. Likewise, a length of the third edge side surface may correspond to the length of the second edge side surface. Preferably, the second and third edge side surfaces may have the same shape / contour. In particular, the third edge side surface may be arranged on an inner side of the second edge side surface. In other words, the second and third edge side surfaces may be arranged one above the other, and the third edge side surface may be located on a side of the panel facing the frame in the assembled state. The third edge side surface reinforces the second edge side surface, thereby providing the panel with additional stability.

[0021] According to one embodiment, the third edge side surface can be formed by bending a portion adjacent to the second edge side surface. This portion can be bent 180 degrees relative to the second edge side surface such that the third edge side surface rests on the second edge side surface on an inner side of the panel.

[0022] Alternatively, the third edge side surface can be formed as a separate section. For this purpose, a separate component, in particular a sheet metal component, can be attached to the second edge side surface to reinforce it. The sheet metal component can be mounted on the second edge side surface in such a way that it rests on the second edge side surface on an inner side of the panel. Preferably, the sheet metal component can be riveted to the second edge side.

[0023] The edge side surfaces and the rear surface, as well as the bead, can preferably be incorporated into the panel by means of bending (air bending, die bending). Other suitable forming processes, such as swivel bending or embossing bending, are also possible. The sections on the end face of the bead and the third edge side surface can be connected to the second edge side surface with a clinch connection instead of or in addition to a rivet connection. Furthermore, the panel can be powder-coated to protect its surface from environmental influences, thus ensuring a long service life for the panel.

[0024] The panel according to the invention allows for a significant reduction in manufacturing costs for providing at least a partial enclosure for a machine tool in its secondary area. The panel's reduced wall thickness (sheet thickness) allows for significant material savings, and the bent connection between the first and second edge surfaces eliminates an additional work step, namely the welding and rounding of the edges at the four corners of the panel.

[0025] A housing according to the invention for a machine tool, in particular for a secondary area of ​​a machine tool, comprises a frame and a plurality of the panels described above.

[0026] The frame can, for example, comprise at least two uprights that are connected at their top sides by means of a longitudinal strut. A plurality of vertical struts, which are also connected to the longitudinal strut, can be arranged between the two uprights. The vertical struts can, in particular, be arranged at a uniform distance between the two uprights. The plurality of panels can each be fastened to two vertical struts and / or to a upright and a vertical strut. Preferably, the panels can be mounted to the vertical struts and / or the uprights using a plurality of screw connections. For this purpose, they can, for example, contain a plurality of through-holes that are evenly distributed over the entire length of the vertical struts and / or the uprights.Each through-hole can accommodate a screw, which is then passed through a corresponding opening in the panel and secured to the vertical strut / stud with a nut. It is also possible for the vertical struts and / or studs to contain threaded holes into which the screws for attaching the panels are screwed. Other fastening methods for mounting the panels to the vertical struts and / or studs, such as pin and / or cotter pin connections, are also possible.

[0027] The panels can preferably adjoin the vertical struts with a rear surface as described above, and the fastening means can be guided through openings in the rear surface. These can preferably be round or oval (elongated holes) openings that are evenly distributed and arranged corresponding to the holes in the vertical struts and / or the uprights along the two long sides of the panels. Other opening shapes (rectangular, polygonal, oval) are also possible. To simplify the installation of the fastening means, the front surface of the panels can also contain openings that are opposite the openings in the rear surface. These can preferably be designed as round openings or as elongated holes, but other opening shapes are also possible.The fasteners can be pushed through the openings in the front surface from the front and rest against an inner side of the rear surface for attachment to the vertical struts and / or uprights. If a screw connection is used, this can include a washer that rests flat against the inner side of the rear surface. Alternatively, the screw connection can include a screw with a collar, for example.

[0028] According to one embodiment, the housing may further comprise at least one vibration damper, which is attached to a rear side of each panel of the plurality of panels. In other words, one or more vibration dampers may be mounted on the rear side of each panel. It is also possible for not all panels to be equipped with at least one vibration damper, but rather, for example, only those panels that experience increased vibration excitation from the machine tool.

[0029] According to one embodiment, the at least one vibration damper can extend horizontally across the panel. This allows it to efficiently dampen vibrations in the longitudinal direction of the panel, which tend to occur due to its large length / width ratio. When using a single vibration damper, it can preferably extend horizontally across the entire width of the panel, covering half the length of the panel, in order to support the panel at a location where the highest vibration amplitudes are expected.

[0030] The vibration damper can have a flat tab at each of its outer ends, allowing it to be attached to a vertical strut of the frame. This means it is not firmly attached to the panel, but rather sits adjacent to it, thus absorbing panel vibrations with a spring action.

[0031] According to one embodiment, the at least one vibration damper may comprise a U-profile whose open side is adjacent to the rear wall of the panel. The vibration damper may also include another profile type suitable for increasing its rigidity, such as an H-profile and / or a T-profile.

[0032] An elastic material can be attached to the open side of the U-profile, positioned between the U-profile and the rear panel. The elastic material can, for example, be a rubber lip slid onto one edge of the U-profile. Preferably, both edges of the open side of the U-profile can be provided with a rubber lip. The rubber lip can rest against the back of the panel, thus providing an elastic transition from the vibration damper to the panel.

[0033] According to a method according to the invention for producing a panel as described above, a surface contour of the panel is first produced from a raw material. The surface contour of the panel is understood to be a developed version of the three-dimensional panel described above. In particular, the surface contour can comprise different developed surfaces for a front side of the panel as well as for its edges and back sides.

[0034] The raw material can be a sheet metal, for example, stainless steel, aluminum, or preferably steel. The sheet metal can have a thickness of 0.5 mm to 1.5 mm, in particular 1 mm. According to one embodiment, the surface contour can be produced using a laser cutting device or a punching device. In other words, the developed panel can be cut or punched from the sheet metal.

[0035] After the surface contour has been produced, a second edge side surface and a first edge side surface of the panel are bent from the surface contour. To produce the second edge side surface, a developed surface intended for this purpose can be bent 90 degrees to the developed front side surface along a transverse side of the surface contour (developed second edge side surface), which borders on the developed front side surface. To obtain the first edge side surface, a developed surface intended for this purpose can be bent 90 degrees to the developed front side surface along a longitudinal side of the surface contour (developed first edge side surface), which also borders on the surface intended for the front side of the panel (developed front side surface). The first and second edge side surfaces are bent in the same direction relative to the front side surface, preferably from this to the rear.In particular, a first and second edge side surface are bent on both longitudinal and transverse sides of the surface contour. Bending the two first and second edge side surfaces simultaneously produces the front surface.

[0036] Furthermore, a connection between the first edge side surface and the second edge side surface is bent from the surface contour. For this purpose, for example, the first or the second developed edge side surface can be at least partially longer than the corresponding side of the developed front side surface. Conversely, the other developed edge side surface can be at least partially shorter than the corresponding side of the developed front side surface. The extension and the shortening of the two developed edge side surfaces can complement each other in such a way that the shortening represents a recess into which the extension can be "bent", preferably by a bend of 90 degrees to the edge side surface which has the extension. As a result, a part of the developed first or second edge side surface merges into the other edge side surface in the bent state.

[0037] In this way, a rounded edge between the first and second edge side surfaces of the panel can be easily realized without additional processing steps, such as welding the edge and subsequent rounding.

[0038] It is also possible for both the first and second developed edge side surfaces to be longer than the respective transverse or longitudinal side of the developed front surface. In this case, the two extensions can be bent, e.g., each at 90 degrees to their original edge side surface, such that they are arranged one above the other after the bending process, thus connecting the two edge side surfaces.

[0039] According to one embodiment, the method can also include bending a rear side surface of the panel from the surface contour that borders the first edge side surface. This step can be carried out, in particular, after bending the second edge side surface and before bending the first edge side surface and the connection between the first and second edge side surfaces. To obtain the rear side surface, a designated surface of the surface contour that borders the unwound first edge side and extends in the longitudinal direction of the surface structure (unwound rear side surface) can be bent such that it lies opposite the front side surface. For this purpose, the unwound rear side surface can be bent 90 degrees relative to the first edge side surface. Before bending, the unwound rear side surface can be provided with openings through which fastening means can be pushed in order to attach the finished panel to a frame.These are preferably round openings. Other opening shapes (rectangular, polygonal, oval) are also possible. To simplify installation of the fastening means, additional openings can be made in the unfolded front surface which, after the rear surface has been bent, are opposite the openings contained therein. These can preferably be designed as oval openings, in particular as elongated holes, but other opening shapes are also possible here. The fastening means can then be pushed from the front through the openings in the front surface and rest against an inner side of the rear surface to enable attachment to the frame. The fastening means can preferably each be a screw connection with a washer which rests flat against the inner side of the rear surface. Alternatively, a screw with a collar can be used, for example.

[0040] In a further step, a bead can be bent into the front surface of the panel. For this purpose, at least two surfaces can be provided in the developed front surface, which extend over the entire length of the front surface (developed bead surfaces). The developed bead surfaces can then be bent at a predetermined angle to one another to form a bead, i.e., a groove-shaped depression, in the front surface of the panel, which extends over its entire length. The bead can be bent such that it has a U-shaped, V-shaped, or hook-shaped cross-section.

[0041] The cross-sectional shape of the bead can be selected based on strength considerations. For example, the cross-sectional shape of the bead can be chosen such that the panel has at least the same, preferably a higher, area moment of inertia than a panel of the same size with a wall thickness of 2 mm or more. The bead can be arranged in the front surface such that it divides it into at least two equal-sized areas. This results in a uniform distribution of the area moment of inertia with respect to a longitudinal axis of the panel, which can further increase its rigidity. It is also possible to arrange more than one bead in the front surface of the panel. In this case, the multiple beads are preferably arranged at an equal distance from one another.

[0042] The unrolled bead surfaces can also contain sections that extend beyond a length of the unrolled front surface and are designed such that they can be bent into the second edge side surface as the end face of the bead. For this purpose, the sections can be bent backward by 90 degrees to form a bead surface and integrated into the second edge side surface by means of further bending steps. Preferably, the sections bent in this way can also be attached to the second edge side surface, for example, riveted to it.

[0043] According to one embodiment, a third edge side surface, which lies opposite the second edge side surface, can be bent from a section of the surface contour that borders the second edge side surface. For this purpose, a surface of the surface contour that adjoins the developed second edge side surface (developed third edge side surface) can be bent 180 degrees relative to the developed second edge side surface in order to lie opposite the second edge side. Preferably, the developed third edge side surface can be bent 180 degrees relative to the second edge side surface in such a way that it rests on the second edge side surface on an inner side of the panel. This reinforces the second edge side surface, giving the panel additional stability.

[0044] Alternatively, a separate section can be attached opposite the second edge side surface to produce the third edge side surface. In other words, a separate component, in particular a sheet metal component, can be attached to the second edge side surface to reinforce the latter. The sheet metal component can be mounted on the second edge side surface such that it rests on the second edge side surface on an inner side of the panel. Preferably, the sheet metal component can be riveted to the second edge side.

[0045] The bending of the edge side and back surfaces, as well as the bead, is preferably performed by edging (light bending, die bending). However, other suitable forming processes, such as swivel bending or stamping bending, can also be used. Clinching can be used as an alternative or in addition to riveting the sections on the second edge side surface (front side of the bead, third edge side surface). Clinching is a cold forming process that creates a snap-fastener-like, positive-locking connection between two or more sheets without additional elements ("riveting without rivets").

[0046] After the bending and riveting processes are completed, the entire surface of the panel can be powder-coated. This protects it from environmental influences and ensures a long service life for the panel.

[0047] The method according to the invention allows for a significant reduction in the manufacturing effort and thus the manufacturing costs for producing a panel for at least partially enclosing a machine tool, since all essential manufacturing steps can be performed using a single manufacturing process, namely bending, preferably by folding. This reduces both the production time required to manufacture the panel and the required material usage. Short description of the characters Fig. 1 schematically shows a cabin of a machine tool with an enclosure of the secondary area according to an embodiment of the claimed subject matter; Fig. 2a, b: show schematically the enclosure made of Fig. 1 in a perspective front and rear view; Fig. 3: shows a surface contour of a Fig. 2a and Fig. 2b shown panels of the enclosure in a front view; Fig. 4a - c: show details of the Fig. 3 shown surface contour in a front view; Fig. 5a - c: show details of one of the Fig. 3 shown surface contour of the panel manufactured in a perspective rear view; Fig. 6: shows an edge enhancement of the Fig. 5a - 5c shown panels; Fig. 7a, b: show a screw connection of the Fig. 2a and Fig. 2b shown enclosure for attaching the panels to the frame; Fig. 8a - c: show a vibration damper that is used in Fig. 2a and Fig. 2b shown enclosure. Detailed description of preferred embodiments

[0048] In the following, exemplary embodiments of the present invention are described in detail using exemplary figures. The features of the exemplary embodiments can be combined in whole or in part, and the present invention is not limited to the described exemplary embodiments. In the figures, identical elements are provided with identical reference numerals, so that a repeated description of the elements is omitted unless necessary.

[0049] Fig. 1 schematically shows a cabin 100 of a machine tool (not shown in detail) with a housing 100a surrounding the primary region 200a of the machine tool, and a housing 100b according to an embodiment of the claimed subject matter, which surrounds the secondary region 200b of the machine tool.

[0050] The primary area 200a of the machine tool can, in particular, comprise a workspace (not shown in detail) of the machine tool, in which a plurality of moving parts are present during operation of the machine tool and in which working media such as coolant, lubricating oil, or protective gas are used (not shown in detail). Therefore, the primary area 200a of the machine tool is enclosed by a "bullet-proof" and media-tight enclosure 100a.

[0051] In the secondary area 200b, in which, for example, auxiliary units (not shown) of the machine tool can be located, the housing 100b essentially serves as an intrusion protection with significantly lower requirements for mechanical stability and tightness compared to the housing 100a. However, based on Fig. 1 clearly shows that the secondary area 200b takes up a considerable amount of space, so that the enclosure 100b has a considerable size, which entails a high material usage and manufacturing effort.

[0052] The illustrated embodiment of the housing 100b according to the invention comprises a frame 12 to which a plurality of panels 10 are mounted. An access 50 to the secondary area 200b is also connected to the frame 12 via a door 50a. Furthermore, an additional rectangular opening is formed in the housing 100b by means of two panels 11, which serves to supply media to the machine tool. The location of this opening can vary depending on the type and model of the machine tool.

[0053] To reduce material usage and manufacturing effort in the manufacture of the enclosure 100b, the panels 10 can be made of sheet metal with a thickness of less than 2 mm. To ensure sufficient rigidity at the same time, a bead 1 is provided in a front surface 10a of each panel. Furthermore, all edge side surfaces 10b, 10c of the panels 10 are connected by bending, thereby avoiding additional processing steps such as welding the edges. A configuration of the panel 10 according to an exemplary embodiment is explained in more detail below in conjunction with the figures.

[0054] The Fig. 2a and Fig. 2b schematically show the enclosure 100b from Fig. 1 in a front and a back view.

[0055] In Fig. 2a is a front view of the housing 100b, ie a side of the housing facing away from the machine tool, shown in a perspective view. Shown are the frame 12, two stands 12a (see also Fig. 2b), one longitudinal strut 12d and two cross struts 12b (see also Fig. 2b). Attached to one of the two stands 12a are the two panels 11, which form the rectangular opening for supplying the machine tool with media in the housing 100b.

[0056] Furthermore, six panels 10 are attached to the frame 12 below the longitudinal strut 12d, each panel having a bead 1 in its front surface 10a, which extends in the longitudinal direction of the panel 10 over its entire length. The individual panels 10 border with their longitudinally extending edge side surfaces 10b (see also Fig. 6) to each other. They thus form a closed enclosure 100b, which reliably prevents any interference with the secondary area 200b of the machine tool.

[0057] Openings 2a are visible in each front surface 10a of the panels 10, through which a fastening means for mounting the panels 10 to the frame 12 can be inserted. Each of the panels 10 shown has five openings 2a on both long sides of the front surface 10a, which allow the panels 10 to be fastened to the frame 12.

[0058] In Fig. Figure 2b shows a rear view of the housing 100b, i.e., a side of the housing facing the machine tool, in a perspective view. In this view, the attachment of the panels 10 to the frame 12 can be seen more clearly. The frame 12 has five further vertical struts 12c between the two uprights 12a, which are connected at their upper end to the longitudinal strut 12d by means of holders 12cb. The vertical struts 12c also each have a further holder 12ca in a lower end region, to which a further longitudinal strut 12d can be mounted. The holders 12ca and 12cb can be welded to the vertical struts 12c and thus form a one-piece holder.

[0059] The panels 10 are connected on their two longitudinal sides to one of the vertical struts and / or to one of the uprights 12a. Two panels 10 are fastened to each vertical strut 12c, while the uprights 12a in the illustrated embodiment only accommodate one panel 10. The panels 10 are mounted to the vertical struts 12c or uprights 12a by means of fastenings 2 (not shown in detail here). A design of the fastenings 2 according to an embodiment is described below in connection with the Fig. 7a and Fig. 7b is explained in more detail.

[0060] In addition, the panels 10 shown have, at least partially, a vibration damper 13 on their rear side. This serves to dampen vibrations that are excited by the machine tool and, due to the length of the panels 10, propagate in particular in their longitudinal direction. In the exemplary embodiment shown, such panels 10 comprise a vibration damper 13 that is mounted on the vertical struts 12c and not on the stand 12a. The vibration damper 13 extends over half the length of the panel 10 in the horizontal direction across its entire width in order to support the panel 10 at a point where the highest vibration amplitudes are to be expected. The two outer panels 10 attached to the stand 12a do not contain a vibration damper 13, as they are exposed to lower vibration excitations. A design of the vibration damper 13 according to an exemplary embodiment will be described below in connection with the Fig. 8a - 8c are explained in more detail.

[0061] On the two cross braces 12b of the frame 12, for example, the Fig. 1, access 50 to the secondary area 200b of the machine tool can be arranged. Alternatively, additional vertical struts 12c can be attached to the cross struts 12b by means of the holders 12cb, to which additional panels 10 can be attached to enclose the secondary area 200b.

[0062] Fig. 3 shows a surface contour 10r of a Fig. 2a and Fig. 2b, in a front view. The surface contour 10r represents a developed view of the three-dimensional panel 10 described above. In particular, the surface contour 10r shows different developed surfaces 10a-10d for a front side 10a of the panel 10 as well as for its edges and rear sides 10b, 10c, 10d.

[0063] In detail, the surface contour 10r comprises a developed front surface 10a, two developed first edge side surfaces 10b, two developed second edge side surfaces 10c, and two developed rear surfaces 10d. The two first edge side surfaces 10b border on opposite longitudinal sides of the front surface 10a, and the two second edge side surfaces 10c border on opposite transverse sides of the front surface 10a. The two rear surfaces 10d adjoin the first edge side surfaces 10b. The developed edge side surfaces 10b, 10c, as well as the developed rear surfaces 10d, comprise several sections that are connected to one another during a bending and forming process. These are described below using the Fig. 4a - 4c are explained in more detail.

[0064] In the front surface 10a, a bead 1 is provided, which in the illustrated embodiment comprises two developed bead surfaces 1a, 1b, which extend over the entire length of the front surface 10a. The developed bead surfaces 1a, 1b can be bent at a predetermined angle to each other to form the bead 1, ie, to form a groove-shaped depression in the front surface of the panel 10. A configuration of the bead 1 according to an embodiment is described below in connection with the Fig. 5a and Fig. 5b is explained in more detail.

[0065] In addition, the developed front surface 10a comprises a plurality of round openings 2a, in particular five round openings each along the two opposite longitudinal sides of the front surface 10a. Likewise, each rear surface 10d comprises five openings 2b, which are each arranged in the rear surfaces 10d at the same distance as the openings 2a from an upper or lower transverse side of the front surface 10a. As a result, the openings 2a and 2b are opposite each other after the bending process (see Fig. 6). The openings 2b in the two rear surfaces 10d are designed as elongated holes and are smaller than the openings 2a in the front surface 10a, as they serve to fasten the panel 10 to the frame 12, while the openings 2b provide access to the fastening 2. If the panels 10 are screwed to the frame 12, for example, the opening 2a must be large enough to allow a screw head and a tool to pass through.

[0066] The surface contour 10r can be made from a sheet metal, for example, from a stainless steel, aluminum, or preferably a steel sheet. The sheet metal can have a thickness of 0.5 mm to 1.5 mm, in particular 1 mm. The surface contour can be cut or punched from the sheet metal using a laser cutting device or a punching device.

[0067] In the Fig. 4a - 4c are details of the Fig. 3 shown surface contour 10r in a front view. In particular, Fig. 4a shows an upper part of the surface contour 10r in a front view, wherein the developed front surface 10a with the bead surfaces 1a, 1b and the two front surfaces 10a-l, 10a-r to the left and right of the bead 1, the two developed first edge side surfaces 10b, the two developed rear side surfaces 10d and an upper one of the two developed second edge side surfaces 10c are shown. As can be seen from Fig. 4a, the developed second edge side surface 10c essentially comprises three sections 10c-l, 10c-m, 10c-r, wherein a left section 10c-l adjoins the front side surface 10a-l to the left of the bead 1, a middle section 10c-m adjoins the developed bead surfaces 1a, 1b and a right section 10c-r adjoins the front side surface 10a-r to the right of the bead 1.

[0068] In addition, Fig. 4a two sections IVb and IVc of the surface contour 10r are marked, which are shown in the corresponding Fig. 4b and Fig. 4c are shown enlarged. Section IVb contains several sections of the developed second edge side surface 10c for producing an end face of the bead 1, and section IVc contains several sections of the developed first and second edge side surfaces 10b, 10c as well as the developed rear side surface 10d for connecting the two edge side surfaces 10b and 10c.

[0069] Fig. Figure 4b shows an enlarged view of a right side of the left section 10c-I, the middle section 10c-m and a left side of the right section 10c-r, which together represent the Fig. 5b. The central section 10c-m is, in particular, a section of the developed bead surfaces 1a, 1b that protrudes beyond the length of the front surface 10a and is designed such that it can be bent, together with the adjacent sections 10c-l, 10c-r, into the second edge side surface 10c as the front side of the bead 1. It is clear that a trapezoidal subsection 10c-m1 of the central section 10c-m can be fitted into a corresponding recess in the left section 10c-l, and a roof-shaped subsection 10c-m2 of the central section 10c-m can be fitted into a corresponding recess in the right section 10c-r. For this purpose, the section 10c-m can be bent backwards by 90 degrees to the respective bead surface 1a, 1b after the production of the bead 1 and integrated into the second edge side surface 10c by further bends.In particular, section 10c-m can be integrated into the edge side surface 10c together with sections 10c-l and 10c-r. A front side of the bead 1 manufactured in this way is shown in . Fig. 5b.

[0070] Fig. 4c shows an enlarged view of a left side of the left section 10c-I as well as a section 10bc of the developed second edge side surface 10b and a section 10dc of the developed rear side surface 10d. The sections 10bc and 10dc are sections of the respective surfaces which protrude beyond the length of the front side surface 10a and are designed such that they connect the first and second edge side surfaces 10b, 10c by bending. It is clear that the triangular section 10bc can be bent onto a slope 10c-Is of the left section 10c-I and the trapezoidal section 10dc can be bent onto a left slope of the triangular section 10bc and a straight line 10c-Ig of the left section 10c-I in such a way that the Fig. 5c, the connection of the first and second edge side surfaces 10b, 10c is established, which additionally includes the rear side surface 10d via the section 10dc. To do this, first the second edge side surface 10c, including the sections 10bc, 10dc, can be bent 90 degrees relative to the front side surface 10a, and subsequently the rear side surface 10d can be bent 90 degrees relative to the first edge side surface 10b. Then the first edge side surface 10b can be bent 90 degrees relative to the front side surface 10a in the same direction as the second edge side surface 10c, whereby the sections 10bc and 10dc are automatically "bent" 90 degrees relative to the first edge side surface 10b and the rear side surface 10d into the second edge side surface 10c. A connection of the first and second edge side surfaces 10b, 10c and the rear side surface 10d produced in this way is shown in Fig. 5c.

[0071] The Fig. 5a - 5c show details of one of the Fig. 3 shown surface contour in a perspective rear view. In particular, Fig. 5a shows an upper part of the panel 10 in a rear view, wherein the rear side 10g, the bead 1, the two rear side surfaces 10d, the two first edge side surfaces 10b and an upper one of the two second edge side surfaces 10c are shown.

[0072] In the illustrated embodiment, the bead 1 has a hook-shaped cross-section. The width of the bead 1 can be in a range between 5 cm and 25 cm, and the depth of the bead 1 can be in a range from 1 cm to 5 cm. By means of the bead 1, a stiffening of the front surface 10a of the panel 10 can be achieved, which enables the low sheet thickness in the range of 0.5 to 1.5 mm. The bead cross-sectional shape can be selected based on strength considerations. For example, the bead cross-sectional shape can be selected such that the panel 10 has at least the same, preferably a higher, area moment of inertia than a panel of the same size with a wall thickness of 2 mm or more. The bead 1 is arranged in the center of the front surface 10a and divides it into two equal areas 10a-l and 10a-r (see also Fig. 4a). This results in a uniform distribution of the area moment of inertia with respect to a longitudinal axis of the panel, which can further increase its stiffness.

[0073] In Fig. 5a also shows two sections Vb and Vc of panel 10, which are shown in the corresponding Fig. 5b and Fig. 5c are shown enlarged. The sections Vb and Vc are counterparts to the sections IVb and IVc of the Fig. 4a, namely the end face of the bead 1 and the connection of the first and second edge side surfaces 10b, 10c, which each consist of the Fig. 4b and Fig. 4c shown sections were manufactured.

[0074] The Fig. The end face of the hook-shaped bead 1 shown enlarged in Figure 5b and not further designated contains the Fig. 4b show the unrolled sections 10c-I, 10c-m, and 10c-r of the unrolled second edge side 10c. These are bent toward the end face as described above and additionally fixed with rivets 14. This results in a flat surface along the second edge side surface 10c, even in the area of ​​the hook-shaped bead 1, which enables easy assembly of the panel 10 and reduces the risk of injury during assembly.

[0075] The Fig. The connection between the first and second edge side surface 10b, 10c and the rear side surface 10d shown enlarged in Figure 5c contains the Fig. 4c, which, as described above, are "bent" into the edge side surface 10c. It is clearly visible that in this way, without any further processing step, a rounded edge is formed between the first and second edge side surfaces 10b, 10c as well as the rear surface 10d and the second edge side surface 10c. The rounded edges can, in particular, reduce the risk of injury during assembly of the panels 10 and achieve an attractive appearance. Fig. 5c also shows a further rivet 14, with which a reinforcement 10e of the second edge side surface 10c is attached to it, which is subsequently in connection with Fig. 6 is described in more detail.

[0076] Fig. 6 shows that in Fig. 5a shows the panel 10 with the back 10g, the bead 1, the two back surfaces 10d, the two first edge side surfaces 10b and the upper of the two second edge side surfaces 10c. In addition, Fig. 6 shows a further sheet metal component 10e which can be attached to the second edge side surface 10c to reinforce it. In particular, the sheet metal component can be fixed by means of rivets 14 (see Fig. 5c) are attached to an inner side of the second edge side surface 10c via corresponding openings 10ea and 10ca in the sheet metal component 10e and the second edge side surface 10c (indicated by the dashed arrows). This reinforces the second edge side surface 10c, giving the panel 10 additional stability.

[0077] As an alternative to the separate sheet metal component 10e, a third edge side surface (not shown) can be bent from a section of the surface contour 10r that borders the second edge side surface 10c (not shown). For this purpose, a section of the surface contour 10r that adjoins the developed second edge side surface 10c (not shown) can be bent 180 degrees relative to the latter in order to lie opposite the second edge side surface 10c. Preferably, the section can be bent 180 degrees relative to the second edge side surface 10c in such a way that it rests on the second edge side surface 10c on an inner side of the panel 10.

[0078] In Fig. 6, the round openings 2a in the front surface 10a of the panel 10 and the elongated holes 2b in the two rear surfaces 10d of the panel 10 for fastening the same to the frame 12 are clearly visible. Such fastening is described in the following Fig. 7a and Fig. 7b shown.

[0079] In particular, the Fig. 7a and Fig. 7b a screw connection of the Fig. 2a and Fig. 2b shown housing 100b for fastening the panels 10 to the frame 12. For this purpose, Fig. 7a, a part of the enclosure 100b is shown in a plan view, showing the longitudinal strut 12d with the supports 12cb, which connect the vertical struts 12c to the longitudinal strut 12d. The panels are attached to the longitudinal struts 12c by means of a screw connection 2 (see also Fig. 2b). Two panels 10 are attached to each longitudinal strut 12c, which are thus adjacent to each other at their edge surfaces 10b. Fig. 7a shows a section VIIb of the housing 100b marked with two screw connections 2, which is Fig. 7b is shown in an enlarged sectional view.

[0080] Fig. Figure 7b shows the two screw connections 2 on the rear surfaces 10d of the corresponding panels 10. Each screw connection contains a screw 2aa, a washer 2ab and a nut 2ba. Using the washer 2ab, the screw 2aa can be inserted into the slotted hole 2b (see Fig. 6) and connect it flush with the inside of the rear surface 10d. It is also possible to attach a second washer (not shown) under the nut 2ba. Furthermore, a screw 2aa with a collar can be used instead of the washer 2ab.

[0081] By screwing the panel 10 onto the rear surface 10d, the front surface 10a is completely flat; in particular, no screw heads protrude from it. This reduces the risk of injury to persons in the secondary area of ​​the machine tool and provides an attractive appearance for the enclosure 100b.

[0082] In the Fig. 8a - 8c is a vibration damper that is installed in the Fig. 2a and Fig. 2b shown enclosure 100b.

[0083] This shows Fig. 8a first a part of the Fig. 2b in a perspective rear view. The housing 100b comprises the frame 12 (see Fig. 2b) with the two uprights 12a, the longitudinal strut 12d, the cross struts 12b, and the vertical struts 12c. The vertical struts 12c are attached to the longitudinal strut 12d via the brackets 12cb, and the panels 10 are attached to the vertical struts. The vibration damper 13 is arranged on the back 10g of the panels 10, which are attached to two vertical struts 10c.

[0084] In Fig. 8a also shows a section VIIIb of the vibration damper 13, which is Fig. 8b is shown enlarged. The vibration damper 13 comprises a U-profile 13e, the open side of which borders the rear wall 10g of the panel 10. Rubber lips 13a are attached / slid onto each edge of the U-profile 13e and are arranged between the rear wall 10g and the U-profile 13e. In particular, the rubber lips 13a rest against the rear side 10g of the panel 10 and thus provide an elastic transition from the vibration damper 13 to the panel 10.

[0085] Adjacent to the U-profile 13e of the vibration damper 13 is a tab (not further specified) by which the vibration damper 13 is attached to the vertical strut 12c. For this purpose, two threaded pins 13c are provided, which engage in the corresponding openings 13ca, 13ba of the vibration damper 13 (see also Fig. 8c). This means that the vibration damper 13 is spring-mounted on the vertical strut 12c.

[0086] Fig. Figure 8c is a detailed drawing of the vibration damper 13 and shows it in a perspective rear view. The vibration damper 13 shown comprises a U-profile 13e, which has a recess 13d in the center, which, when the vibration damper 13 is mounted, borders the bead 1 on the rear side 10g of the panel. In the area of ​​the recess 13d, a tab 13f is attached to an inner side of the U-profile 13e, with which the bead 1 of the panel 10 can be connected to the vibration damper by means of a rivet if necessary. The edges of the U-profile 13e are provided with four rubber lips or edge protection profiles 13a, which rest on the rear side 10g of the panel 10 to the left and right of the bead 1 when the vibration damper is mounted on the housing 100b (see Fig. 8b). Two unspecified tabs are adjacent to the U-profile 13e, each of which has two openings 13ca for the passage and screwing of the Fig.8b, as well as an opening for attaching the screw connection 13b, with which the vibration damper 13 can be attached to the vertical struts 12c. Due to this type of attachment, the vibration damper 13 is not firmly connected to the panel 10, but merely borders it and can thus resiliently absorb vibrations of the panel 10.

[0087] In summary, the enclosure according to the invention offers the possibility of safely demarcating a secondary area of ​​a machine tool with reduced material usage and manufacturing effort. To this end, the enclosure features panels with a low sheet thickness (< 2 mm), which are stabilized by a bead. Furthermore, the panels can be manufactured essentially using a single manufacturing process, namely by bending, preferably by folding. This reduces both the production time required to manufacture the panels and the material required.

Claims

[1] Panel (10) for at least partially enclosing a machine tool, in particular for enclosing a secondary area of ​​a machine tool, comprising a front surface (10a), a first edge side surface (10b) which adjoins the front side surface (10a) on a longitudinal side thereof and is arranged at an angle, in particular perpendicular to the front side surface (10a), and a second edge side surface (10c) which adjoins the front side surface (10a) on a transverse side thereof at an angle, in particular perpendicular to the front side surface (10a) and at an angle, in particular perpendicular to the first edge side surface (10b), wherein the panel (10) is formed in one piece and the first edge side surface (10b) and the second edge side surface (10c) are connected to one another by bending. [2] Panel (10) according to claim 1, wherein the front side surface (10a) has at least one bead (1) adjacent to the second edge side surface (10c) and extending in the longitudinal direction of the panel (10). [3] Panel (10) according to claim 2, wherein an end face (10c-m) of the at least one bead (1) is integrated into the second edge side surface (10c) by bending. [4] Panel (10) according to claim 2 or 3, wherein the at least one bead (1) has a V-shaped, a U-shaped or a hook-shaped cross-section. [5] Panel (10) according to at least one of claims 2 to 4, wherein the at least one bead (1) divides the front side surface (10a) into at least two equal areas. [6] Panel (10) according to at least one of the preceding claims, further comprising a rear side surface (10d) which adjoins the first edge side surface (10b) and is arranged perpendicular thereto and opposite the front side surface (10a), wherein the rear side surface (10d) is adapted to fasten the panel (10) to a frame (12). [7] Panel (10) according to at least one of the preceding claims, further comprising a third edge side surface (10e) extending along and opposite the second edge side surface (10c). [8] Panel (10) according to claim 7, wherein the third edge side surface is formed by bending a portion adjacent to the second edge side surface (10c) or as a separate portion (10e). [9] Housing (110b) for a machine tool, in particular for a secondary area of ​​a machine tool, comprising a frame (12) and a plurality of panels (10) according to at least one of the preceding claims. [10] The enclosure (110b) according to claim 9, further comprising at least one vibration damper (13) mounted on a rear side (10g) of each panel (10) of the plurality of panels (10). [11] Enclosure (110b) according to claim 10, wherein the at least one vibration damper (13) extends in the horizontal direction of the panel (10). [12] Enclosure (110b) according to claim 10 or 11, wherein the at least one vibration damper (13) comprises a U-profile (13e) whose open side adjoins the rear wall (10g) of the panel, wherein an elastic material (13a) is attached to the open side of the U-profile (13e) and is arranged between the U-profile (13e) and the rear wall (10g). [13] Method for producing a panel (10) for enclosing a machine tool, in particular for enclosing a secondary area of ​​a machine tool according to at least one of claims 1 to 8, comprising at least one of the steps Producing a surface contour (10r) of the panel (10) from a raw material; Bending a second edge side surface (10c) and a first edge side surface (10b) of the panel (10) from the surface contour (10r); and Bending a connection of the first edge side surface (10b) with the second edge side surface (10c) from the surface contour (10r). [14] Method according to claim 13, wherein the surface contour (10r) is produced by means of a laser cutting device or a punching device. [15] The method of claim 13 or 14, further comprising at least one of the steps Bending a rear surface (10d) of the panel from the surface contour (10r) adjacent to the first edge side surface (10b); and Bending a bead (1) into a front surface (10a) of the panel (10). [16] Method according to at least one of claims 13 to 15, further comprising the steps Bending a third edge side surface, which is opposite to the second edge side surface (10c), from a portion of the surface contour (10f) which is adjacent to the second edge side surface (10c); or Attaching a separate section (10e) opposite the second edge side surface (10c) to produce the third edge side surface.

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