Support structure, in particular tool support structure and method for its manufacture

Description

[0001] The invention relates to a support assembly according to the preamble of claim 1 or claim 14, and to a method for its manufacture. The support assembly can, for example, carry at least one cutting tool as a component and thus be designed as a tool support assembly. However, the support assembly is also suitable for other applications in which at least one component is to be rotatably mounted about an axis of rotation, particularly at high speeds, for example, for clutches or brakes. In these cases, the component can be a clutch body or brake pad body. A support assembly according to the preamble of claim 1 or 14 is known from DE 10 2015 012 912 A1.

[0002] Tool holders are used, for example, in rotary tools with cutting inserts attached to them. Such a tool holder is known, for example, from DE 10 2018 101 407 A1. The tool body can be made of a metal or a metallic alloy. The cutting elements can be made of polycrystalline diamond.

[0003] Such tool holders have a very high mass and low natural frequencies. Due to this mass, the rotational speed cannot be increased arbitrarily when driven around the axis of rotation. The high mass also leads to correspondingly high energy consumption, for example, when positioning the tool with machine axes in a machine tool and when changing the rotational speed.

[0004] Instead of steel or steel alloys, lightweight metals such as aluminum could be used. However, due to its lack of strength, an aluminum tool holder is only suitable for certain tasks.

[0005] Starting from the prior art, it is an object of the present invention to create a support assembly which has a particularly simple structure and ensures high stability at low weight.

[0006] This problem is solved by a support assembly having the features of claim 1 or claim 14. This problem is also solved by methods for manufacturing the support assembly according to claims 13 or 15.

[0007] The support assembly according to the invention serves to rotatably mount or support at least one component about an axis of rotation. The at least one component is preferably a tool, in particular a cutting tool. In this case, the support assembly forms a tool support assembly. For example, a milling cutter, a planer, a drill head, or another tool can be formed by means of the tool support assembly.

[0008] The support assembly can also be used to support another component that needs to be rotatably mounted around a rotational axis at high speeds, for example, a clutch lining or a brake pad. In general, the support assembly can be used in various technical fields.

[0009] The support assembly comprises several hollow bodies arranged side by side in an axial direction parallel to the axis of rotation, each enclosing the axis. Each hollow body has several web sections. Two immediately adjacent web sections are connected to each other by forming a curved connecting section. The curvature of the connecting sections is such that it is concave on the inner side facing the axis of rotation (inner radius) and convex on the outer side facing away from the axis of rotation (outer radius). In particular, the curvature of the connecting sections is constant, so that each connecting section extends along a circular arc.

[0010] The web sections preferably extend straight between two connecting sections. Alternatively, the web sections can also be curved, in particular convex towards the axis of rotation and concave away from the axis of rotation, wherein the curvature of the web sections can be less than the curvature of the connecting sections at any point and is preferably less than the reciprocal of the minimum distance of the web section from the axis of rotation.

[0011] The hollow bodies can have an overall polygon-like shape, with the connecting sections forming the corner areas of the polygon.

[0012] The support assembly also has a support unit on which each hollow body is supported at several support points spaced circumferentially around the axis of rotation. The support points can be arranged on at least one axially extending component of the support unit, for example on a support body or several individual pins.

[0013] The support assembly also includes at least one receiving body. Preferably, several receiving bodies are provided. Each receiving body is designed to hold the at least one component, for example, a tool or cutting tool. Each receiving body is held by one or more of the existing hollow bodies. For example, the at least one receiving body can be attached directly to a hollow body, in particular to a web section. In another embodiment, the support unit and the hollow bodies can work together to hold the at least one receiving body.

[0014] The support assembly has a modular design with very few parts. The forces acting on the components during operation of the support assembly are effectively supported by the hollow bodies. The support assembly forms an internal cavity or free space along the axis of rotation, around which the support unit or the hollow bodies are arranged. The low mass of the support assembly enables high rotational speeds and high dynamics during speed changes and / or positioning movements. Energy consumption during positioning and speed changes is low. Chips can be removed and / or coolant can be supplied and removed through the internal free space. Furthermore, the support assembly has a higher natural frequency compared to known support assemblies of the same axial and radial dimensions.

[0015] The hollow bodies are preferably not enclosed radially on the outside by another outer hollow body in the circumferential direction.

[0016] The modular design of the support assembly allows for the individual replacement of damaged or worn components. This modular structure also enables scaling using the same individual parts. For example, the number of axially arranged hollow bodies can be varied to adjust the axial length of the support assembly.

[0017] Simple structural designs for the support assembly can be implemented, the manufacturing of which is not subject to very tight tolerance limits. This results in low costs for the support assembly.

[0018] It is advantageous if each hollow body has at least three web sections, or, for example, exactly three web sections. All hollow bodies can have the same number of web sections or different numbers of web sections.

[0019] It is advantageous if all web sections of a hollow body are of the same length.

[0020] It is also preferred if all hollow bodies of the support assembly are identical.

[0021] In a preferred embodiment, each receiving element is directly attached to one of the hollow bodies, in particular to a web section on the outer surface facing away from the axis of rotation. Preferably, the outer surfaces of the connecting sections facing away from the axis of rotation are free of receiving elements.

[0022] At least in the areas where the hollow bodies are in contact with a fastening element, the hollow bodies are preferably designed without perforations. Preferably, the hollow bodies are entirely free of perforations or depressions so that the tensile force they can withstand in the circumferential direction is not reduced locally by holes, recesses, or other perforations.

[0023] In one embodiment, the at least one receiving body is not in contact with the inner surface facing the axis of rotation, but is attached to the outer surface of a hollow body. The at least one receiving body can be axially supported by another hollow body and / or by another receiving body. Additionally or alternatively, a pin of the support unit can extend axially through the receiving body. This further improves the fixation of the receiving body in the circumferential direction and radially to the axis of rotation.

[0024] In some embodiments, the at least one receiving body is held on the support unit, and in particular on a support body of the support unit, by means of one or more of the existing hollow bodies. The at least one hollow body and the support body thus cooperate to hold the at least one receiving body. The support body can be a hollow body closed in the circumferential direction around the axis of rotation. The support body can extend along or coaxially with the axis of rotation.

[0025] Preferably, the support body has flat sides arranged regularly around the axis of rotation in the circumferential direction, at least on the outer surface of the support body facing away from the axis of rotation. Preferably, the flat sides extend axially along all existing hollow bodies and / or along the entire support body. In the circumferential direction, the flat sides can adjoin one another, so that an axially extending edge is formed between two immediately adjacent flat sides. The support body can thus have a polygonal outer contour in a cross-sectional plane perpendicular to the axis of rotation. Additionally or alternatively, the inner contour in the cross-sectional plane can also be polygonal.

[0026] The number of flat sides of the support body of the support unit is preferably greater than the number of web sections of the hollow bodies through which the support body extends. In one embodiment, the number of flat sides can be at least or exactly twice as large as the number of web sections of the hollow bodies through which the support body extends. It is advantageous if each hollow body, with several or all of its web sections, abuts one of its assigned flat sides of the support body.

[0027] In addition to or as an alternative to the support body, the support unit can have several axially extending pins, which are preferably spaced apart from each other in the circumferential direction and, in particular, regularly distributed. The support unit can also have a retaining body. The retaining body is arranged axially adjacent to the hollow bodies. Optionally, two retaining bodies can also be provided, between which the hollow bodies are arranged.

[0028] It is advantageous if one of the pins of the support unit is assigned to each of several or all curved connecting sections of each hollow body. This allows a support point to be formed between a pin and its assigned curved connecting section. At the support point, the inner side of the curved connecting section rests against the assigned pin. Several connecting sections of different hollow bodies can rest against a single pin.

[0029] One or more web sections of a hollow body, or even several of the existing hollow bodies, can each be assigned a pin. This pin can be positioned opposite the outer surface facing away from the axis of rotation and thus outside the hollow body without penetrating it. The pin can extend through a receiving body if a receiving body is arranged on the assigned web section. This allows the receiving body to be supported both on the hollow body and on the pin of the support unit.

[0030] In a preferred embodiment, each hollow body and / or the optional support body of the support unit is integrally formed. Each hollow body and / or the optional support body can be made of a fiber-reinforced composite material.

[0031] In a preferred embodiment, a first group and a second group, each containing at least one hollow body, can be provided. It is also possible to provide more than two groups of hollow bodies. The hollow bodies of a common group are preferably identical and each has the same rotational orientation about the axis of rotation. The hollow bodies of different groups are arranged circumferentially offset from one another by a rotational angle about the axis of rotation. If several groups of hollow bodies are present, hollow bodies from different groups alternate in the axial direction. Two hollow bodies that are directly adjacent in the axial direction thus belong to different groups.

[0032] The hollow bodies arranged directly adjacent to each other in the axial direction can be in contact with each other or alternatively arranged at a distance from each other.

[0033] A support assembly according to one or more of the embodiments described above can be manufactured as follows:

[0034] First, a support unit is provided. At least one receiving body is positioned on the support unit and / or on one of the hollow bodies. The hollow bodies are arranged around the axis of rotation and are supported by the support unit. Each receiving body is held by a web section of the hollow body and / or the support unit. A component can be attached to each receiving body. This attachment can be performed as the final step, but it can also be carried out earlier during the assembly or manufacturing of the support assembly.

[0035] In one variant of the process, the hollow bodies can be provided as rigid, pre-manufactured hollow bodies before being arranged around the axis of rotation. Alternatively, it is also possible to produce the hollow bodies during the arrangement process. For this purpose, a reinforcing fiber strand or roving can be wound around the support unit and / or around at least one receiving body. The reinforcing fiber strand can be impregnated or saturated with a curable polymer before or after. Subsequently, the impregnated or saturated reinforcing fiber strand can be cured to form the hollow body.

[0036] In another support assembly according to the invention, in particular a tool carrier assembly, the hollow body extends helically around the axis of rotation. The at least one receiving body can be held by means of this hollow body. For this purpose, the hollow body can cooperate with a support unit. The at least one receiving body can be arranged and held radially to the axis of rotation between one or more sections of the hollow body and the support unit. Additionally or alternatively, the at least one receiving body can also be attached to the hollow body. A receiving body that is attached to the hollow body can additionally be supported by the support unit, for example, by a pin of the support unit extending through the receiving body.

[0037] In this embodiment, the hollow body is preferably produced by winding at least one reinforcing fiber strand around the axis of rotation and around the support unit, followed by curing a plastic material with which the reinforcing fiber strand is impregnated or saturated. The impregnation or saturation of the reinforcing fiber strand can take place before or after the winding.

[0038] Advantageous embodiments of the invention will become apparent from the dependent claims, the description, and the drawings. Preferred embodiments of the invention are explained in detail below with reference to the accompanying drawings. The drawings show: Figures 1 and 2 An exemplary embodiment of a support assembly, for example a tool carrier assembly, in different views, Figures 3 to 8 different states during the manufacture of the carrier assembly according to the Figures 1 and 2 , Figures 9 and 10Another embodiment of a support assembly, for example a tool carrier assembly, in different views, Figures 11 to 16 different states during the manufacture of the carrier assembly according to the Figures 9 and 10 , Figures 17 and 18 Another embodiment of a support assembly, for example a tool carrier assembly, in different views, Figures 19 and 20 Examples of embodiments for receiving bodies and components, for example tools, for use with the carrier assembly according to the Figures 17 and 18 , Figures 21 to 23 different states during the manufacture of the carrier assembly according to the Figures 17 and 18 , Figures 24 and 25 Another embodiment of a support assembly, for example a tool carrier assembly, in different views, Figure 26 a receiving body and a component, for example a tool, for use with the carrier assembly according to the Figures 24 and 25 , Figures 27 to 30 different states during the manufacture of the carrier assembly according to the Figures 24 and 25 , Figures 31 to 34 different states during the manufacture of the carrier assembly according to the Figures 24 and 25 in an alternative procedure, Figures 35 and 36 Another embodiment of a support assembly in different views, Figure 37 a schematic representation of an exemplary embodiment of a support assembly with a helical hollow body and Figures 38 to 40 Each is a schematic representation of different forms for the realization of a support assembly.

[0039] In the Figures 1 and 2Figure 10 illustrates an embodiment of a support assembly 10. The support assembly 10 is configured to support at least one component 11, which is arranged at a distance from a rotary axis D. The support assembly 10 is also configured to be driven to rotate about the rotary axis D. For example, the support assembly 10 can be designed as a tool carrier assembly, in which the component 11 is formed by a tool. The tool carrier assembly can be configured to be clamped into a tool spindle of a machine tool.

[0040] The direction parallel to the axis of rotation D is called the axial direction A. A direction around the axis of rotation D is called the circumferential direction U.

[0041] The components 11 can, for example, be designed as tools, and in particular cutting tools or cutting inserts. They are arranged at a distance from each other in the circumferential direction U and / or in the axial direction A. The cutting edges of the cutting tools can be equidistant from the axis of rotation D. The tool carrier assembly thus formed can, for example, constitute a milling cutter, a drill, a plane, or the like.

[0042] The support assembly 10 can also be used in other technical fields besides rotary driven tools, in particular in all other applications where a component must be mounted rotating about an axis of rotation D on an outer circumference, for example in brakes, clutches or similar.

[0043] The support assembly 10 has several hollow bodies 12. The hollow bodies 12 are preferably identical and can have a polygon-like shape. In the embodiment according to the Figures 1 and 2 Each hollow body 12 has an essentially triangular or triangular-like shape.

[0044] Each hollow body 12 has several, and for example three, web sections 13. In this embodiment, the web sections 13 are straight. The web sections 13 have the same length. Two immediately adjacent web sections 13 are connected to each other by a curved connecting section 14. In this embodiment, the curved connecting section 14 extends along a circular arc. The curvature of the connecting section 14 is such that the side of the connecting section 14 facing the axis of rotation D has a concave shape, and the side facing away from the axis of rotation D has a convex shape.

[0045] In the exemplary embodiment, each hollow body 12 is integrally formed without seams or joints. The hollow body 12 is, for example, made of a composite material comprising reinforcing fibers embedded in a polymer matrix. The reinforcing fibers preferably extend in the direction of travel of the hollow body 12 around the axis of rotation D, that is, essentially in a straight line in the web sections 13 and along the arc of the respective connecting section 14 in the connecting sections 14. A plurality of reinforcing fibers are arranged side by side in the axial direction A and / or in a direction perpendicular to the axis of rotation D.

[0046] Preferably, the wall thickness of the hollow body 12 is the same in the web sections 13 and in the connecting sections 14. The cross-section of the hollow bodies 12 is, for example, rectangular, with the dimension in the axial direction A being larger than the dimension perpendicular to the axial direction A. The hollow bodies 12, for example, have no recess or opening. This allows the reinforcing fibers to extend uninterrupted essentially in the circumferential direction U around the axis of rotation D, and the density of the reinforcing fibers can be essentially constant.

[0047] In the exemplary embodiment, the hollow bodies 12 are divided into two or more groups. In the exemplary embodiment according to the Figures 1 and 2 There is a first group 17 and a second group 18, each group 17, 18 comprising one or more hollow bodies 12. The number of hollow bodies 12 in each group 17, 18 can be the same or different. In the Figures 1 and 2In the illustrated embodiment of the support assembly 10, the first group 17 has two hollow bodies 12, while the second group 18 has only one hollow body 12. The number of hollow bodies per group 17, 18 can be the same or different and preferably differs by a maximum of one.

[0048] The hollow bodies 12 of a common group 17 or 18 are arranged in alignment in the axial direction A. They each have the same rotational position or orientation in the circumferential direction U about the axis of rotation D.

[0049] The hollow bodies 12 of different groups 17, 18 are arranged offset or rotated relative to each other by a rotation angle α in the circumferential direction U. In the exemplary embodiment, the rotation angle α is 60°. The magnitude of the rotation angle α can be selected such that, viewed in a plane perpendicular to the axis of rotation D, each median through a web section 13 of the hollow bodies 12 of the first group 17 forms an angle bisector through the connecting sections 14 of the hollow bodies 12 of the second group 18.

[0050] Preferably the rotation angle α is calculated as follows: α=180° / (n*g), where n is the number of web sections 13 of the hollow bodies 12 and g is the number of groups.

[0051] The hollow bodies 12 are arranged around the axis of rotation D such that the connecting sections 14 are evenly distributed in the circumferential direction U when viewed along the axis of rotation D or in a projection plane perpendicular to the axis of rotation D ( Figure 2In the axial direction A, the hollow bodies 12 of different groups 17, 18 are arranged alternately. Between each pair of hollow bodies 12 of the first group 17, a hollow body 12 of the second group 18 is arranged.

[0052] The support assembly 10 also has at least one receiving body 21. In the embodiment according to Figures 1 and 2 A receiving body 21 is attached to each web section 13 of each hollow body 12, for example by a material-bonded connection and / or an adhesive connection.

[0053] The receiving body 21 has a base surface 22, with which it lies flat against or is flatly connected to an outer surface 23 of the associated web section 13 ( Figure 5 ).

[0054] In the exemplary embodiment, the receiving body 21 has a central part 24. On the side of the central part 24 opposite the base surface 22, a receptacle 25 for attaching the component 11 and, for example, the cutting tool, is arranged or formed. The component 11 or cutting tool can be attached to the receptacle 25 by a material-bonded connection, an adhesive bond, a positive-locking connection, and / or a force-locking connection. For example, the component 11 can be screwed or soldered on.

[0055] The receiving body 21 has its greatest height in the central part 24, viewed in a direction perpendicular to its base 22 or perpendicular to the outer surface 23 to which the receiving body 21 is attached. Starting from the central part 24, the height decreases circumferentially U around the axis of rotation D or along the associated web section 13 to both sides. Preferably, the receiving body 21 extends along the entire length of a web section 13 between the two connecting sections 14 that define the web section 13.

[0056] The central part 24 of the receiving body 21 is preferably completely penetrated by a hole 26 in axial direction A.

[0057] The support assembly 10 also includes a support unit 30. The support unit 30 is designed to support or carry the hollow bodies 12.

[0058] In the Figures 1 and 2In the illustrated embodiment, the support unit 30 has a retaining body 31 arranged in the axial direction A next to the hollow bodies 12. The retaining body can have a disc-shaped or ring-shaped, for example, circular, form. The retaining body 31 is arranged coaxially with the axis of rotation D.

[0059] The support unit 30 also includes several, for example six, pins 32, which extend in the axial direction A and are attached at one end to the holding body 31. The pins are arranged at a distance from the axis of rotation D and at a distance from each other in the circumferential direction U. For example, the central axes of the pins 32 are arranged on a common cylindrical surface around the axis of rotation D. The hollow bodies 12 can be supported on the pins 32.

[0060] For example, each hollow body 12 is supported at several support points 33. The support points are distributed in the circumferential direction U and are preferably arranged in a regularly spaced manner. The support points 33 are formed between several pins 32 and several or all connecting sections 14 of each hollow body 12. At each support point 33, an inner surface of the connecting section 14 facing the axis of rotation D rests against a pin 32. For example, a first subset of the pins 32 for forming the support points 33 is arranged with the first group 17 of the hollow bodies 12, while a second subset of the pins 32, which differs from the first subset, for forming the support points 33 is arranged with the second group 18 of the hollow bodies 12.

[0061] As can also be seen, the pins 32 belonging to the first subset extend outside the interior of the hollow bodies 12 of the second group 18, and the pins 32 belonging to the second subset extend outside the interior of the hollow bodies 12 of the first group 17. The pins 32 extending outside a hollow body 12 pass through the holes 26 of the receiving bodies 21. The receiving bodies 21 are therefore supported both on a hollow body 12 and on a pin 32 of the support unit 30.

[0062] A clamping element 35 is preferably arranged on the support unit 30 and, for example, on the holding body 31. The clamping element 35 can be integrally formed with the holding body 31 or attached to the holding body 31. The clamping element 35 is designed for clamping in a chuck of a machine tool. The clamping element 35 can, for example, be designed as a shaft, in particular as a hollow shaft cone. The design of the clamping element 35 can conform to a defined standard. The clamping element 35 extends along or coaxially with the axis of rotation D. For example, the clamping element 35 is arranged on the side of the holding body 31 opposite the pins 32.

[0063] In a variation of the one in the Figures 1 and 2 In the illustrated embodiment, the retaining body 31 can be omitted. Each of the pins 32 extends through at least one receiving body 21 and rests against a connecting section 14 at at least one support point 33.

[0064] In the Figures 3 to 8 The schematic representation shows the production of the support assembly 10 of the exemplary embodiment from the Figures 1 and 2 illustrated. First, the holding body 31 of the support unit 30 is provided, on which the pins 32 are arranged ( Figures 3 and 4 Furthermore, a number of hollow bodies 12 are provided, for example, three hollow bodies 12. The receiving bodies 21 are arranged on the web sections 13 of each hollow body 12. As explained, in the exemplary embodiment, each hollow body 12 has three web sections 13, to each of which a receiving body 21 is attached ( Figure 5 ).

[0065] As it is in Figure 5As shown, the base surface 22 of the receiving body 21 can extend in a plane parallel to the plane in which the outer surface 23 of the associated web section 13 extends. Alternatively, the base surface 22 can also have a concave or convex curve, and the receiving body 21 can be attached to the web section 13 such that the receiving body 21 is elastically deformed until the base surface 22 extends in the same plane as the outer surface 23 of the associated web section 13. In this elastically deformed state, the receiving body 21 exerts a force on the hollow body 12 or the web section 13.

[0066] The hollow bodies 12, equipped with the receiving bodies 21, are then arranged on the support unit 30 ( Figures 6 to 8). The hollow bodies 12 are placed on the pins 32 in axial direction A in the desired rotational position according to their membership in the first group 17 or the second group 18.

[0067] In the Figures 9 and 10 A further embodiment is illustrated. In contrast to the previous embodiment, the support unit 30 is designed differently. For example, instead of the holding body 31, the support unit 30 has a support body 37 extending along or coaxially to the axis of rotation. The support body 37 is in Figure 11illustrated separately. It has several flat sides 38 evenly distributed in the circumferential direction U on an outer surface facing away from the axis of rotation D. By way of example, the flat sides 38 extend completely along the entire support body 37 in the axial direction A. The flat sides 38 have a length in the axial direction A that is at least as large as the total length of the hollow bodies 12 arranged side by side in the axial direction A. The support body 37 extends completely through all the hollow bodies 12 in the axial direction A.

[0068] The outer contour of the support body 37 corresponds, for example, to an inner contour that is bounded by a projection of all inner contours of all hollow bodies 12 onto a projection surface perpendicular to the axis of rotation D. In the exemplary embodiment, the support body 37 has an outer contour that, viewed in a plane perpendicular to the axis of rotation D, corresponds to a regular hexagon. For example, two immediately adjacent flat sides 38 merge into one another, forming an edge extending in the axial direction A. Alternatively, the flat sides 38 could be connected to each other in the circumferential direction U by a radius or another transition geometry.

[0069] The number of flat sides 38 is preferably at least or exactly twice as large as the number of web sections 13 of the hollow bodies 12.

[0070] The support body 37 is preferably also designed as a hollow body in order to keep the weight of the support assembly 10 low. For example, the support body 37 can also have a polygonal cross-section on the inside.

[0071] As it is in the Figures 9 and 10 As illustrated, the support unit 30 can, in addition to the support body 37, also have several pins 32 extending in the axial direction A, analogous to the embodiment shown in connection with the Figures 1 to 8 As explained above. In contrast to the previous embodiment, the pins 32 are not connected to a retaining body 31, but each pin extends through at least one receiving body 21 and rests against a connecting section 14 at at least one support point 33.

[0072] In a modified embodiment not shown, the pins 32 could also be omitted. The receiving bodies 21 are then not directly held or supported by the support unit 30.

[0073] Otherwise, the structure corresponds to the first embodiment, so reference can be made to the preceding explanations.

[0074] In all the embodiments described above, each hollow body 12, together with at least one and, for example, three receiving bodies 21 and optionally one component 11 arranged thereon, forms a unit. All existing units can be of identical construction. The number of these units, which can be arranged side by side in the axial direction A, can vary, depending on the desired axial length of the support assembly 10 or of a tool formed from the support assembly 10 in the exemplary embodiment. The units can be arranged in two or more groups offset by the rotation angle α in the circumferential direction U.

[0075] In the Figures 11 to 16 is the manufacture of a support assembly 10 according to the exemplary embodiment from the Figures 9 and 10schematically illustrated. The support body 37 is provided. Several construction units are manufactured, each based on a hollow body 12 and several receiving bodies 21 ( Figure 12 The building units are then arranged on the support body 37 in the desired rotational position in the circumferential direction U on the support body 37, as shown in the Figures 13 to 15 This is illustrated. The pins 32 are inserted after the building units have been arranged in axial direction A ( Figure 15 Preferably, at the end of the manufacturing process, the components 11 and, for example, tools or cutting tools are attached to the receiving bodies 21 at the respective receptacle 25 ( Figure 16 ) .

[0076] Figures 17 and 18Figure 1 shows a further embodiment of the support assembly 10. In this embodiment, the support unit 30 is formed by the support body 37. The hollow bodies 12 are designed analogously to the previous embodiments and are arranged in a first group 17 and a second group 18, offset about the axis of rotation D. The hollow bodies 12 rest with their web sections 13 against each associated flat side 38 of the support bodies 37. The connecting sections 14 are each spaced from the radially adjacent flat side 38 of the support body 37. This creates a radial gap 39 between the connecting section 14 and the associated flat side 38. If each group 17, 18 has several hollow bodies 12, the spaces between them 39 are aligned in the axial direction A.

[0077] Each gap 39, or the gaps 39 aligned with each other in the axial direction, can be used to hold a receiving body 21. The receiving body 21 is thus held between the axially adjacent connecting sections 14 of the same group 17, 18 of hollow bodies 12 and the radially opposite flat side 38 of the support body 37. The components 11 (for example, tools or cutting tools) can be arranged on the receiving body 21.

[0078] In the Figures 19 and 20 Different embodiments of receiving bodies 21 are illustrated, which in the embodiment of the support assembly 10 according to the Figures 17 and 18The receiving bodies each have a base surface 22, which preferably extends in a plane and can be arranged on a flat side 38 of the support body 37. The cross-sectional contour of the receiving body 21 is adapted to the contour of the space 39. On the side opposite the base surface 22, the receiving body 21 has, for example, a ridge or apex 40, which extends in the axial direction A and has a circular arc contour perpendicular to the axial direction A, the radius of which corresponds to the inner radius of the curved connecting sections 14. A flank 41 adjoins the apex 40 on each side, the two flanks 41 being able to enclose an angle corresponding to the angle enclosed by two web sections 13 of the hollow body 12 adjacent to a common connecting section 14.At least one of the two flanks 41 can have a receptacle 25 for attaching one or more components 11. The geometry of the receptacle 25 is adapted to the geometry of the components 11. As shown in . Figure 19 As shown schematically as an example, several narrow individual components 11 or a single wider component 11 can be attached to the mount 25.

[0079] In Figure 20Figure 1 illustrates another possibility for arranging a component 11 on the receiving body 21. Instead of arranging the component 11 directly on the receiving body 25, an adapter body 42 can be provided, which has the receiving body 25 for the component 11. In the exemplary embodiment, the adapter body 42 has two foot sections 43, which define a space 44 between them. The two foot sections 43 can be placed against the flanks 41 of the receiving body 21, and the adapter body 42 can be attached to the receiving body 21. The adapter body 42 can be supported in the axial direction A on one or both sides by an existing hollow body 12 and, in particular, by a connecting section 14 of a hollow body 12.

[0080] In the Figures 21 to 23 The schematic representation of the manufacture of the support assembly 10 for the embodiment shown is as follows: Figures 17 to 20 illustrated. Figure 21Figure 1 shows the arrangement of the hollow bodies 12 in the two groups 17, 18, which are each offset from each other by a rotation angle α. Subsequently, the receiving bodies 21 can be pushed in the axial direction A through the aligned spaces 39 ( Figure 22 Finally, the components 11 (here: cutting tools) can be arranged on the receiving body 21, either directly or indirectly by means of the adapter body 42.

[0081] The Figures 24 and 25 show a further embodiment of the support assembly 10, which is constructed similarly to the embodiment according to the Figures 17 and 18 , so that reference can be made to the preceding description. The difference between the exemplary embodiments lies mainly in the design of the receiving body 21. Figure 26 shows an exemplary embodiment of the receiving body. Analogous to the exemplary embodiment according to Figure 19 or Figure 20The receiving body has a base 22, which extends, for example, in a plane. The flanks 41 and the vertex 40 do not extend along a straight line or plane in the axial direction A, but are stepped. The receiving body 21 has at least one, and for example at least two, groove-like recesses 48 extending along one flank 41 over the vertex 40 and further along the other flank 41. Each groove-like recess 48 has a bottom 49, which is bounded by two side flanks spaced apart in the axial direction A.

[0082] The contour of the base 49 is preferably adapted to the inner contour of the space 39 and corresponds, for example, to the inner radius of a curved connecting section 14 and the course of the adjoining end regions of the web sections 13. The projecting sections 50 adjoining the recesses 48 in the axial direction A are, in the manufactured support assembly 10, arranged in the axial direction A adjacent to one or more connecting sections 14 of one or more hollow bodies 12, which bear against the base 49 and are each received in a recess 48 or at least partially project into it. The receiving body 21 according to Figure 26 is thus held by two hollow bodies in cooperation with the support body 37 of the support unit 30.

[0083] In a variation of the embodiment shown, a recess 48 could be open on one axial side and only be limited on the other axial side by a side flank adjoining the bottom 49.

[0084] At least one flank 41, and in particular the projecting sections 50, can have one or more receptacles 25 for a component 11. For example, a single component 11 can be attached to the receptacle 25 of the receiving body 21, as shown in Figure 26 This is illustrated. Alternatively, several narrow components 11 and, for example, two or three components 11 could be arranged on each of a projecting section 50.

[0085] The support assembly 10 according to the Figures 24 to 26 can be manufactured as shown schematically in the Figures 27 to 30is illustrated. In this embodiment, the hollow bodies 12 preferably form only a single group and are all arranged in the same rotational orientation about the axis of rotation D ( Figure 27 Subsequently, several receiving bodies 21, and for example three receiving bodies 21, are arranged at, for example, all connection areas 14 of the hollow bodies 12, so that the connection areas are arranged in the recesses 48. The base surfaces 22 of the receiving bodies 21 face the axis of rotation D ( Figure 28 Subsequently, the support body 37 can be inserted along the axis of rotation D in the axial direction A, so that each base surface 22 of a receiving body 21 rests against an associated flat side 38 of the support body 37. Optionally, each web section 13 can also rest against one of the flat sides 38 of the support body 37 (compare Figure 25The receiving bodies 21 are fixed after the support body 37 has been inserted. The components 11 can then be attached to the receiving bodies 21 ( Figure 30 ).

[0086] In the embodiments described so far, the hollow bodies 12 were provided as finished components. Alternatively, it is also possible to complete at least one hollow body 12 only during the production of the support assembly 10. For example, in the embodiment of the support assembly 10 according to the Figures 24 to 26 First, the support body 37 must be provided ( Figure 31 ) and then the receiving bodies 21 are placed on each flat side 38 of the support body 37 ( Figure 32The groove-shaped recesses 48 are aligned circumferentially U around the axis of rotation D. A reinforcing fiber strand 51, consisting of a plurality of individual reinforcing fibers, is wound into each of the multiple, and for example three, recesses 48 aligned circumferentially U, preferably in several turns circumferentially U around the axis of rotation D. The reinforcing fiber strand 51 can be formed by a roving. The reinforcing fiber strand 51, or the plurality of reinforcing fibers of the reinforcing fiber strand 51, can be impregnated with an uncured plastic. The impregnation can be carried out before or after the winding. The impregnated reinforcing fiber strands 51 are then cured, for example, by physical and / or chemical action, such as by heat input or irradiation with light in a predetermined wavelength range (for example, UV light).The hardening process forms a hollow body 12. Subsequently, the components 11 and, for example, the cutting tools can be attached to the receiving bodies 21 (Figure 34).

[0087] In the Figures 35 and 36 Another embodiment of the support assembly 10 is illustrated. The support assembly 10 essentially corresponds to the embodiment according to the Figures 31 to 34, wherein the recesses 48 in the receiving bodies 21 are arranged along a helical path around the axis of rotation D. This allows a helical hollow body 12 to be produced and arranged in the recesses 48. As in the previously described embodiment, the receiving bodies 21 can first be arranged on the support body 37, and then a reinforcing fiber strand 51, consisting of a plurality of reinforcing fibers, can be wound helically around the axis of rotation D through all the recesses 48 of the receiving bodies 21. One or more helical windings can be produced. The reinforcing fiber strand 51 is either previously or subsequently impregnated with a plastic, which can be cured after winding to form a rigid, helical hollow body 12. Apart from the helical shape, the hollow body is formed analogously to the previously described embodiment according to the Figures 31 to 34 manufactured.

[0088] Finally, one or more components 11 and, for example, cutting tools can be arranged on each receiving body 21.

[0089] In Figure 37 The principle of a hollow body 12 wound or extending helically around the axis of rotation D is illustrated. The vertices 40 of the receiving bodies 21 are represented here by edges of a prism extending in the axial direction A. The path of the helical hollow body 12 is highly schematically depicted by a band winding around the prism.

[0090] In the Figures 38 to 40It is shown, based on a respective schematic diagram, that the support assembly can have different prismatic contours in a plane perpendicular to the axis of rotation D and can preferably each form a regular polygon with, for example, four, five, or six vertices. A substantially triangular contour, as shown in the exemplary embodiments according to the Figures 1 to 37 As explained above, this is not strictly necessary. Both the hollow bodies 12 and the optionally present support body 37 can have arbitrary polygonal and, in particular, regular polygonal contours when viewed in a plane perpendicular to the axis of rotation D. Reference symbol list:

[0091] 10 Beam assembly 11 Component 12 Hollow body 13 Web section 14 Connecting section 17th first group, 18th second group 21 Receiving body 22 Base surface of the receiving body 23 Outer surface of the web section 24 Central part 25 Receptacle 26 Hole 30 Support unit 31 Holding body 32 Pin 33 Support point 35 Clamping body 37 Support body 38 Flat side 39 Gap 40 Vertex of the receiving body 41 Flank of the receiving body 42 Adapter body 43 Base 44 Clearance 48 Recess of the receiving body 49 Bottom of the recess 50 Protruding section 51 Reinforcing fiber strand α Rotation angle Axial direction D axis of rotation U circumferential direction

Claims

1. Support assembly (10), particularly tool support assembly, configured for arranging at least one component (11) and configured to be rotatingly driven around a rotation axis (D), having multiple hollow bodies (12), which are arranged adjacent to one another in an axial direction (A) parallel to the rotation axis (D) and which surround the rotation axis (D) and which comprise multiple web sections (13), wherein respectively two directly adjacent web sections (13) are connected with one another forming a curved connection section (14), having a support unit (30) on which each hollow body (12) is supported at multiple support positions (33) that are distanced in circumferential direction around the rotation axis (D), characterized in that the support assembly (10) comprises at least one holding body (21) that is configured for arrangement of the at least one component (11), wherein each holding body (21) is held by means of one or more of the hollow bodies (12) on the support unit (30) and / or on a web section (13) of one of the hollow bodies (12).

2. Support assembly according to claim 1, wherein each holding body (21) is directly attached to one of the hollow bodies (12).

3. Support assembly according to claim 2, wherein each holding body (21) is additionally supported on the support unit (30).

4. Support assembly according to claim 1, wherein each holding body (21) is supported on a bearer body (37) of support unit (30) radial to the rotation axis (D) and is held by means of the hollow bodies (12) on bearer body (21), wherein bearer body (37) extends coaxially or along the rotation axis (D).

5. Support assembly according to any of the preceding claims, wherein the support unit (30) comprises a holding body (31) arranged adjacent to the hollow bodies (12) in axial direction (A).

6. Support assembly according to claim 5, wherein the support unit (30) comprises multiple pins (32), which extend in axial direction (A) with distance to the rotation axis (D) and which are connected to the holding body (31) at one end respectively.

7. Support assembly according to claim 5 or 6, wherein one of the pins (32) is assigned to multiple or all of the web sections (13) of at least one of the hollow bodies (12) respectively, wherein this pin (32) extends through at least one holding body (21) of the at least one holding body (21).

8. Support assembly according to any of the preceding claims, wherein the support unit (30) comprises a bearer body (37) extending coaxially or along the rotation axis (D) .

9. Support assembly according to claim 8, wherein the bearer body (37) has a contour with flat sides (38) arranged in circumferential direction (U) around the rotation axis (D) in a regularly distributed manner, wherein each flat side (38) extends in axial direction (A) along all of the hollow bodies (12).

10. Support assembly according to claim 8 or 9, wherein the bearer body (37) is in contact with the web sections (13) of each hollow body (12) and has a distance to the connection sections (14) of each hollow body (12).

11. Support assembly according to any of the preceding claims, wherein all of the hollow bodies (12) have the same number of web sections (13) and curved connection sections (14).

12. Support assembly according to any of the preceding claims, wherein a first group (17) and a second group (18) is provided, wherein each group (17, 18) comprises at least one hollow body (12) and wherein the at least one hollow body (12) of the first group (17) is arranged offset about a rotation angle (α) in circumferential direction (U) around the rotation axis (D) compared to the at least one hollow body (12) of the second group (18) .

13. Method for production of a support assembly (10) according to any of the preceding claims comprising the following steps: - providing of the support unit (30), - arranging the at least one holding body (21) on the support unit (30) and / or on one of the hollow bodies (12), - arranging the hollow bodies (12) around the rotation axis (D) on the support unit (30), so that each holding body (21) is held on a web section (13) of one of the hollow bodies (12) and / or on the support unit (30) and - arranging the at least one component (11) on the at least one holding body (21).

14. Support assembly (10), particularly tool support assembly, which is configured for arranging at least one component (11) and which is configured to be rotatingly driven around a rotation axis (D), having a hollow body (12) comprising multiple web sections (13), wherein respectively two directly adjacent web sections (13) are connected with one another forming a curved connection section (14), and having a support unit (30) extending in axial direction (A), characterized in that the hollow body (12) extends helically around the rotation axis (D) and that the support assembly (10) comprises at least one support body (21) that is configured for arranging the at least one component (11), wherein each holding body (21) is held by means of the hollow body (12) on the support unit (30).

15. Method for producing a support assembly (10) according to one of the claims 1-12 or 14 comprising the following steps: - providing the bearer body (37), - arranging the at least one holding body (21) on the bearer body (37), - winding at least one fiber strand (51) around the rotation axis (D) and around each holding body (21) arranged on the bearer body (37), so that each holding body (21) is held on the bearer body (37), - curing the fiber strand (51) soaked or saturated with a plastic and - attaching the at least one component (11) on the at least one holding body (21).