DE102015004302A1 - Drive hollow shaft made of composite material with multi-mountable and removable frictionally engaged shaft-hub connection - Google Patents

Abstract

Drive hollow shaft (1) for torque-transmitting connection of two shafts (2.1, 2.2), wherein the tubular drive hollow shaft (1) consists of a composite material and wherein the hollow drive shaft (1) has at least one cylindrical tubular end (1.5), characterized in that between the shaft (2.1, 2.2) and the at least one cylindrical tubular end (1.5) of the drive hollow shaft (1), a radial gap is present, and in that this radial gap by a multi-mount and dismountable clamping element (3, 4, 5) a radially directed surface pressure on the surface of the shaft (2.1, 2.2) and on the inner circumferential surface of the cylindrical tubular end (1.5) of the drive hollow shaft (1) is constructed by means of which between the shaft (2.1, 2.2) and the hollow drive shaft (1) a frictional and play-free torque transmission takes place.

Description

In drive technology, it is common practice between individual units, such as motors, gears, spindles, etc. to produce torque-transmitting connections by means of couplings. Such couplings generally have to compensate for assembly and / or manufacturing inaccuracies of the units in the radial, angular and axial directions. In many applications, torque transmission must be torsion-free and with high torsional rigidity.

To meet the above requirements, various coupling concepts are known from the prior art.

So is for example in DE 197 09 950 B4 a torsionally rigid bending elastic shaft coupling, in particular described from all-steel. In this case, at least one ring-shaped disk set is connected by means of screws in the circumferential direction alternately with mutually opposite flanges of the hubs to be coupled together.

Furthermore, from the prior art, a torsionally stiff, play-free, elastic metal bellows coupling for torque-transmitting connection of two waves known as in EP 1064468 B1 is described.

Both mentioned coupling concepts according to the prior art have the disadvantage that all elements for torque transmission are made of metal and therefore the clutches have a correspondingly high mass and a high mass moment of inertia.

In order to reduce the moments of inertia, optimizations based on the previously used materials have been carried out on the described coupling systems.

Another step in reducing the mass and moment of inertia of the coupling systems is the partial substitution of the metallic components with parts made of special non-metallic lightweight materials.

Thus, in certain fields of application, in particular in the field of aerospace technology, torque-transmitting components made of fiber composite materials are used as they are used in WO 2008 124674 A1 are described in more detail. In this case, a flexible hollow shaft drive high power density made of composite materials and a manufacturing process for this is claimed. A disadvantage of the flexible drive hollow shaft described in the patent is further their connection to cylindrical shafts for forwarding the torque via metallic hubs, which still have a high mass and a high mass moment of inertia. The connection of the metallic hubs to the shafts for forwarding the torque can be done by positive engagement or frictional engagement.

Object of the present invention is therefore to provide a flexible drive hollow shaft high power density of composite material, which is connected in a direct manner frictionally engaged with a concentrically arranged cylindrical or conical shaft. Furthermore, the claimed in the present invention frictional connection by tightening and loosening of screws should be mountable and disassembled.

For this purpose, it is proposed to carry out the hollow drive shaft as a composite bellows with tubular cylindrical ends and to generate a radially directed pressure between the cylindrical ends of the drive hollow shaft of high power density and the concentrically arranged preferably cylindrical shaft, the directly or indirectly between the two parts a frictional connection to transmit a torque.

The structure of the drive hollow shaft according to the invention in the form of a composite bellows consists for example of a resin-impregnated carbon fiber braid which is cured under the action of temperature.

Epoxy resins are predominantly used as the resin today, but resin compositions based on polyester, melamine or acryl as well as other chemical raw materials are also conceivable.

The said carbon fiber braid can be made in one or more layers.

The geometric shape of the bellows can be realized by radial deformation of a cylindrical braided hose.

Instead of the carbon fiber braiding and glass fibers or other electrically insulating fiber materials can be used, with the help of which can be produced electrically insulating hollow drive shafts.

By the geometric bellows structure, the required compliance of the hollow drive shaft can be achieved in the radial, angular and axial directions, at the same time a high torsional stiffness of the component is possible with rotation about the central axis.

For a direct frictional connection between the hollow drive shaft and the cylindrical shaft, the cylindrical tubular end of the drive hollow shaft to be connected to an inner diameter which is slightly larger than the outer diameter of the cylindrical shaft. The generation of the pressure is achieved in that radially outside the tubular end of the hollow drive shaft, a clamping element is arranged, which generates by tightening fasteners such as screws a radially inwardly directed pressure.

As clamping element while a clamping ring or a commercially available clamping set with, for example, cooperating conical surfaces is applicable. Similarly, hydraulic Hohlmantelspannbuchsen can be used as it DE 292 3902 C2 are known.

• – Anordnung des Spannelementes zur Erzeugung der für die Drehmomentübertragung erforderlichen Pressung radial außerhalb des Endes der Antriebshohlwelle und Überbrückung eines vorhandenen konzentrischen ringförmigen Spaltes zwischen dem Ende der Antriebshohlwelle und der zylindrischen Welle durch eine radial nachgiebige Reduzierbuchse. Dabei ist es meist möglich, dass das zylindrische Balgende aus demselben harzgetränkten Fasergeflecht hergestellt wird wie die Balgstruktur selbst, ohne zusätzliche Faserschichten. Damit weist die Balgstruktur etwa die gleiche Wanddicke auf wie das zylindrische Balgende.
• – Anordnung des Spannelementes radial innerhalb des vorhandenen konzentrischen ringförmigen Spaltes zwischen dem Ende der Antriebshohlwelle und der bevorzugt zylindrischen Welle und direkte reibschlüssige Drehmomentübertragung zwischen der Antriebshohlwelle, dem Spannelement und der Welle. Durch das Spannelement wird eine Flächenpressung gegen die vorzugsweise zylindrische Welle und gegen das zylindrische Ende der Antriebshohlwelle erzeugt, die zu erhöhten Zugspannungen in Umfangsrichtung im Bereich des Endes der Antriebshohlwelle führt. Bei dieser Konstellation kann es daher erforderlich sein, das zylindrische rohrförmige Ende der Antriebshohlwelle radial außerhalb der Grundstruktur mit weiteren harzgetränkten Faserlagen in radialer Richtung zu bandagieren und so zu stabilisieren. Eine erste Möglichkeit dazu besteht darin, weitere Faserlagen auf die Grundstruktur vorzugsweise in Umfangsrichtung zu wickeln. Eine zweite Möglichkeit besteht darin, direkt bei der Fertigung der Grundstruktur oder in einem nachgeschalteten Arbeitsgang weitere harzgetränkte Geflechte auf dem Außendurchmesser des rohrförmigen Endes der Antriebshohlwelle aufzubringen und auszuhärten. Alternativ ist es denkbar, das zylindrische rohrförmige Ende der Antriebshohlwelle radial außerhalb der Grundstruktur mit einem metallischen Ring, vorzugsweise aus einer Leichtmetall-Legierung abzustützen.
• – Anordnung des Spannelementes radial innerhalb des vorhandenen konzentrischen ringförmigen Spaltes zwischen dem Ende der Antriebshohlwelle und der zylindrischen Welle mit zusätzlicher konzentrisch angeordneter radial nachgiebiger Reduzierbuchse. Dabei können radial von innen nach außen folgende Reihenfolgen der einzelnen Elemente realisiert werden: Welle – Reduzierbuchse – Spannelement – Antriebshohlwelle. Welle – Spannelement – Reduzierbuchse – Antriebshohlwelle. Auch bei diesen Konstellationen entstehen erhöhte Zugspannungen in Umfangsrichtung im Bereich des rohrförmigen Endes der Antriebshohlwelle. Diesen Zugspannungen kann mit den bereits im vorigen Absatz beschriebenen Maßnahmen Rechnung getragen werden.

To realize an indirect frictional connection between the drive hollow shaft and the cylindrical shaft, several constellations are conceivable:

• - Arrangement of the clamping element for generating the required for the torque transmission pressure radially outward of the end of the drive hollow shaft and bridging an existing concentric annular gap between the end of the hollow drive shaft and the cylindrical shaft by a radially yielding Reduzierbuchse. It is usually possible that the cylindrical bellows end is made of the same resin-impregnated fiber braid as the bellows structure itself, without additional fiber layers. Thus, the bellows structure has about the same wall thickness as the cylindrical bellows.
• - Arrangement of the clamping element radially within the existing concentric annular gap between the end of the hollow drive shaft and the preferably cylindrical shaft and direct frictional torque transmission between the hollow drive shaft, the clamping element and the shaft. By the clamping element, a surface pressure is generated against the preferably cylindrical shaft and against the cylindrical end of the drive hollow shaft, which leads to increased tensile stresses in the circumferential direction in the region of the end of the hollow drive shaft. In this constellation, it may therefore be necessary to bandage the cylindrical tubular end of the drive hollow shaft radially outside the basic structure with other resin-impregnated fiber layers in the radial direction and thus to stabilize. A first possibility for this is to wind further fiber layers onto the basic structure, preferably in the circumferential direction. A second possibility is to apply directly on the production of the basic structure or in a subsequent operation further resin-impregnated braids on the outer diameter of the tubular end of the drive hollow shaft and cure. Alternatively, it is conceivable to support the cylindrical tubular end of the drive hollow shaft radially outside the basic structure with a metallic ring, preferably of a light metal alloy.
• - Arrangement of the clamping element radially within the existing concentric annular gap between the end of the hollow drive shaft and the cylindrical shaft with additional concentrically arranged radially reducing bushing. In this case, the following sequences of individual elements can be realized radially from the inside to the outside: shaft - reducing bushing - clamping element - hollow shaft drive. Shaft - Clamping element - Reducing bushing - Hollow drive shaft. Even with these constellations, increased tensile stresses occur in the circumferential direction in the region of the tubular end of the hollow drive shaft. These tensile stresses can be taken into account with the measures already described in the previous paragraph.

In an arrangement of the clamping element radially outside the end of the hollow drive shaft, the clamping element may be designed as a simple clamping ring or alternatively as a commercial clamping set with, for example cooperating conical surfaces. Likewise, a hydraulic Hohlmantelspannbuchse or a clamping set according to the prior art according to DE 869 892 C find use with plate spring-like deformable elements.

In the described arrangement of the clamping element radially within the existing concentric annular gap between the cylindrical end of the drive hollow shaft and the cylindrical shaft all types of said commercial clamping sets are also possible.

• – Als geometrisch einfachste Form kann die Reduzierbuchse als rohrförmiges Bauteil mit einem in axialer Richtung durchgehenden Schlitz ausgeführt sein.
• – Eine weitere Variante ist als rohrförmiges Bauteil mit von den Planflächen ausgehenden nicht ganz bis zur Gegenfläche durchgehenden Schlitzen ausgeführt, wobei sich jeweils ein von der ersten Planfläche ausgehender und ein von der zweiten Planfläche ausgehender Schlitz in Umfangsrichtung abwechseln.

When using a Reduzierbuchse for bridging existing radial column this Reduzierbuchse must be designed as flexible as possible in the radial direction, for which various structural embodiments are conceivable:

• - As a geometrically simplest form, the Reduzierbuchse can be designed as a tubular component with a continuous slot in the axial direction.
• - A further variant is designed as a tubular component with outgoing from the flat surfaces not completely up to the opposite surface continuous slots, each alternating an outgoing from the first plane surface and emanating from the second plane surface slot in the circumferential direction.

Further details of the drive hollow shaft according to the invention with a frictional connection to the shaft resulting from the description of the drawings below and from the claims.

1 shows a perspective view of the drive hollow shaft according to the invention in the form of a composite bellows with an external clamping set in the form of a clamping ring and inner reducing bush and the two waves to be connected with it.

2 shows a longitudinal section through the drive hollow shaft 1 with the two shafts and also a perspective detail view of the reducing bushing used.

3 represents a longitudinal section through the hollow drive shaft, with direct clamping of the tubular end on the shaft by means of external clamping set.

4 shows the longitudinal section through a hollow drive shaft with direct clamping by internal clamping sets between the shafts and the tubular ends of the hollow drive shaft.

5 represents a further longitudinal section through the hollow drive shaft with indirect clamping by internal clamping set and Reduzierbuchse and also shows a perspective detail view of the case used here Reduzierbuchse.

The perspective view in 1 shows a first embodiment of a hollow drive shaft according to the invention ( 1 ) with the central axis (A). As a transfer element is a composite bellows ( 1.1 ) with a bellows structure ( 1.2 ), the radial, axial and angular displacements between the illustrated cylindrical shafts (FIG. 2.1 ) can compensate. The tubular ends ( 1.5 ) of the hollow drive shaft ( 1 ) are radially outwardly of the tubular ends ( 1.5 ) clamping rings ( 3 ), which by the force of in the region of the clamping slots ( 3.2 ) of the clamping ring body ( 3.1 ) arranged clamping screws ( 3.3 ) produce a radially directed to the central axis (A) pressure and thus the tubular ends ( 1.5 ) of the hollow drive shaft ( 1 ) via reducing bushes ( 6 ) frictionally engaged with the cylindrical shafts ( 2.1 ) connect. The tubular ends ( 1.5 ) of the hollow drive shaft ( 1 ) and the reducing bushes ( 6 ) are thereby deformed radially in the direction of the central axis (A).

In 2 is to further clarify the facts a longitudinal section through the left half of the drive hollow shaft ( 1 ) out 1 and a detailed view of the reducing bushing used ( 6 to see). The reducing bush ( 6 ) consists of a tubular socket body ( 6.1 ) and is for achieving a high radial elasticity with an axial and radial cross-section of the socket body ( 6.1 ) completely penetrating longitudinal slot ( 6.2 ) Mistake. For the achievement of low elasticities, it is also conceivable that the longitudinal slot ( 6.2 ) the cross-section of the socket body ( 6.1 ) penetrates only partially in the radial direction. As it can be provided a plurality of axially continuous longitudinal slots. By loosening the clamping screws ( 3.3 ), the pressure between the components can be reversed and the hollow drive shaft ( 1 ) and the reducing bushings ( 6 ) can be recovered from the cylindrical shafts ( 2.1 ) pull off.

Another longitudinal section through a drive hollow shaft according to the invention ( 1 ) is in 3 to see, as a transmission element, a composite tube ( 1.3 ) with a cylindrical tube structure ( 1.4 ) and tubular ends ( 1.5 ) is provided. In this case, the tubular ends ( 1.5 ) of the hollow drive shaft ( 1 ) has an inner diameter which is only slightly larger than the outer diameter of the two cylindrical shafts ( 2.1 ). Radially outside the tubular ends ( 1.5 ) of the hollow drive shaft ( 1 ) are commercially available outer clamping sets ( 4 ) arranged in the form of so-called shrink discs. In the illustrated exterior tension sets ( 4 ) is tightened by tightening the outer clamping screws ( 4.3 ) an axial displacement between the outer cone body ( 4.2 ) and the outer cone bushing ( 4.1 ), whereby the outer cone bushing ( 4.1 ) is deformed radially to the central axis (A) and thus the tubular ends ( 1.5 ) radially against the cylindrical shafts ( 2.1 ) presses and frictionally connects with these. The used outer clamping sets ( 4 ) are usually designed so that after loosening the outer clamping screws ( 4.3 ) the outer cone bodies ( 4.2 ) and the outer cone bushes ( 4.1 ) slide apart to the original distance and thus the frictional connection between the tubular ends ( 1.5 ) and the cylindrical shafts ( 2.1 ) is canceled again. For longer operating times of the outer clamping sets ( 4 ) in the assembled state, it may happen that the outer cone body ( 4.2 ) and the outer cone bushing ( 4.1 ) in the area of the conical surfaces in contact. In this case, in the outer cone body ( 4.2 ) or in the outer cone socket ( 4.1 ) suitable axial Abdrückgewinde be provided as a dismantling aid. As so-called jacking screws, the already existing outer clamping screws ( 4.3 ) serve.

In the 3 shown drive hollow shaft ( 1 ) with an axially continuous tube structure ( 1.4 ) is intended to wave ( 2.1 ) with small displacements in the radial, angular and axial directions.

4 shows a further longitudinal section through the drive hollow shaft according to the invention ( 1 ), wherein the two ends of the hollow drive shaft ( 1 ) via inner clamping sets ( 5 ) of different design with the waves ( 2.1 . 2.2 ) are connected. The left half shows a commercially available inner clamping set ( 5 ) directly connected to a cylindrical shaft ( 2.1 ) cooperates. By tightening the inner clamping screws ( 5.3 ) results in an axial displacement between the inner cone bushing ( 5.1 ) and the inner cone body ( 5.2 ), whereby the inner cone bushing ( 5.1 ) radially to the central axis (A) directly on the cylindrical shaft ( 2.1 ) and the inner cone body ( 5.2 ) a radially outwardly against the inner diameter of the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) directed pressing experiences.

On the right half of the longitudinal section of the 4 is another very cost-producible embodiment of an inner clamping set to see, with a conical shaft ( 2.2 ) cooperates. Activation of this inner clamping set takes place by tightening one on the threaded pin ( 5.5 ) of the conical shaft ( 2.2 ) seated clamping nut ( 5.6 ). This will cause a cone bushing ( 5.4 ) on the outer cone of the conical shaft ( 2.2 ), wherein the cone bushing ( 5.4 ) experiences a radially outwardly directed deformation and a pressure against the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) generated. The cone bushing ( 5.4 ), the inner cone socket ( 5.1 ) and the inner cone body ( 5.2 ) have a high radial compliance, for which the parts ( 5.4 . 5.1 . 5.2 ) similar to the reducing bush ( 6 ) out 2 ideally have a continuous in the radial and axial direction slot. To stabilize the two tubular ends ( 1.5 ) are these with radially outer circumferential composite bandages ( 1.6 ), which are made, for example, by additional fiber layers wound on the basic structure. The two waves ( 2.1 . 2.2 ) are thus on the hollow drive shaft ( 1 ) frictionally connected with each other.

By loosening the inner clamping screws ( 5.3 ) and the clamping nut ( 5.6 ), the pressure between the waves ( 2.1 . 2.2 ) and the hollow drive shaft ( 1 ) be lifted again. Because even with an inner clamping set ( 5 ) due to very long operating times often a seizing between the inner cone body ( 5.2 ) and the inner cone socket ( 5.1 ) occurs in the region of the conical surfaces, can also on the inner cone body ( 5.2 ) or on the inner cone socket ( 5.1 ) Axial Abdrückgewinde be provided, the Abdrückgewinde are ideally designed so that the so-called jacking screws already existing inner clamping screws ( 5.3 ) are usable.

The hollow drive shaft ( 1 ) is in 4 as a combination of a composite tube ( 1.3 ) with a tube structure ( 1.4 ) and at the axial ends molded composite bellows ( 1.1 ) with corresponding bellows structures ( 1.2 ), whereby the hollow drive shaft ( 1 ) is capable of, in addition to high torsional stiffness when rotating about the central axis (A) in addition radial, angular and axial displacements between the waves ( 2.1 . 2.2 ).

In 5 is a commonly used in industrial practice embodiment of the hollow shaft according to the invention shown, wherein the tubular ends ( 1.5 ) via commercially available inner clamping sets ( 5 ) indirectly via reducing bushes ( 7 ) frictionally engaged with the cylindrical shafts ( 2.1 ) are connected. The reducers ( 7 ) are required when the hollow drive shaft ( 1 ) with the inner clamping sets ( 5 ) to different diameters of cylindrical shafts ( 2.1 ) must be adjusted. By tightening the inner clamping screws ( 5.3 ) results in an axial displacement between the inner cone bushing ( 5.1 ) and the inner cone body ( 5.2 ), whereby the inner cone bushing ( 5.1 ) radially to the central axis (A) via the reducing bushing ( 7 ) against the cylindrical shaft ( 2.1 ) and the inner cone body ( 5.2 ) a radially outwardly against the inner diameter of the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) directed pressing experiences.

The inner cone body ( 5.2 ) and the inner cone socket ( 5.1 ) have a high radial compliance, for which the inner cone body ( 5.2 ) and the inner cone socket ( 5.1 ) similar to the reducing bush ( 6 ) out 2 ideally have a continuous in the radial and axial direction slot. To stabilize the tubular end ( 1.5 ) is this with a radially outer circumferential metal bandage ( 1.7 ), which is produced by a pressed onto the basic structure and / or glued metallic tube, preferably made of a light metal. The two waves ( 2.1 ) are thus on the hollow drive shaft ( 1 ) frictionally connected with each other. By loosening the inner clamping screws ( 5.3 ), the pressure between the waves ( 2.1 ) and the hollow drive shaft ( 1 ) be lifted again. The hollow drive shaft ( 1 ) is also in 5 as a combination of a composite tube ( 1.3 ) with a tube structure ( 1.4 ) and at the axial ends molded composite bellows ( 1.1 ) with corresponding bellows structures ( 1.2 ), whereby the hollow drive shaft ( 1 ), with high torsional stiffness when rotating about the central axis (A) in addition radial, angular and axial displacements between the parts ( 2.1 ).

The perspective detail view in 5 shows a further embodiment of a Reduzierbuchse ( 7 ).

The illustrated reducing bushing ( 7 ) consists of a tubular socket body ( 7.1 ) formed by a group of first longitudinal slots ( 7.2 ) and second longitudinal slots ( 7.4 ) is penetrated, wherein the first longitudinal slots ( 7.2 ) at the first plane ( 7.3 ) of the socket body ( 7.1 ) and in the axial direction within the part in front of the second plane surface ( 7.5 ) end up. Similarly, the second longitudinal slots ( 7.4 ) on a second plane surface ( 7.5 ) and end within the part before the first plane ( 7.3 ). The first longitudinal slots ( 7.2 ) and second longitudinal slots ( 7.4 ) are to achieve a maximum radial elasticity at the Reduzierbuchse ( 7 ) alternately arranged in the circumferential direction.

A preferred embodiment of the reducing bushing ( 7 ) has a total of 4 longitudinal slots ( 7.2 . 7.4 ), which are arranged to each other at an angular distance of 90 degrees. To simplify assembly and to ensure the correct axial position of the reducing bushing ( 7 ) in the inner cone socket ( 5.1 ) of the inner clamping set ( 5 ) has the reducing bush ( 7 ) via a circumferential sleeve projection ( 7.6 ), which acts as an axial stop when inserting the reducing sleeve ( 7 ) into the inner cone socket ( 5.1 ) serves.

In accordance with the task of the invention for the entire system consisting of hollow drive shaft ( 1 ), Clamping element ( 3 . 4 . 5 ) and reducing bush ( 6 . 7 ) to achieve a minimum mass and a minimum mass moment of inertia, the clamping elements ( 3 . 4 . 5 ) and reduction postings ( 6 . 7 ) ideally made of a light metal such as aluminum or titanium.

LIST OF REFERENCE NUMBERS

A

Central axis (the hollow drive shaft)

1

Drive shaft tube

1.1

Composite bellows

1.2

bellows structure

1.3

Composite pipe

1.4

tube structure

1.5

Tubular end

1.6

Composite bandage

1.7

Metal bandage

2.1

Cylindrical shaft

2.2

Tapered shaft

3

clamping ring

3.1

Collet body

3.2

clamping slot

3.3

clamping screw

4

External clamping set

4.1

Outer cone socket

4.2

Outer cone body

4.3

Outside clamping screw

5

Inside clamping set

5.1

Inner cone socket

5.2

Inner cone body

5.3

Internal clamping screw

5.4

taper bush

5.5

threaded pin

5.6

locknut

6

Reducing bush (slots axially continuous)

6.1

bush body

6.2

longitudinal slot

7

Reducing bushing (slots not axially continuous)

7.1

bush body

7.2

First longitudinal slot

7.3

First plane

7.4

Second longitudinal slot

7.5

Second plane

7.6

female lead

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19709950 B4 [0003]
• EP 1064468 B1 [0004]
• WO 2008124674 A1 [0008]
• DE 2923902 C2 [0018]
• DE 869892 C [0020]

Claims (15)

Drive hollow shaft ( 1 ) to the torque transmitting connection of two shafts ( 2.1 . 2.2 ), wherein the tubular drive hollow shaft ( 1 ) consists of a composite material and wherein the hollow drive shaft ( 1 ) at least one cylindrical tubular end ( 1.5 ), characterized in that between the shaft ( 2.1 . 2.2 ) and the at least one cylindrical tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) is a radial gap, and in that this radial gap by a multi-mount and dismountable clamping element ( 3 . 4 . 5 ) a radially directed surface pressure on the surface of the shaft ( 2.1 . 2.2 ) and on the inner circumferential surface of the cylindrical tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) by means of which between the shaft ( 2.1 . 2.2 ) and the hollow drive shaft ( 1 ) takes place a frictional and backlash-free torque transmission. Drive hollow shaft ( 1 ) according to claim 1, characterized in that the hollow shaft has an integral bellows structure ( 1.2 ) with the ability to compensate for axial, angular or lateral offsets. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the radially directed surface pressure between the cylindrical shaft ( 2.1 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) by a radially outside of the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) arranged annular clamping element in the form of a clamping ring ( 3 ) or an external clamping set ( 4 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) in direct contact with the surface of the cylindrical shaft ( 2.1 ) stands. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the radially directed surface pressure between the cylindrical shaft ( 2.1 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) by a radially outside of the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) arranged annular clamping element in the form of a clamping ring ( 3 ) or an external clamping set ( 4 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) via a radially arranged inside the same reducing sleeve ( 6 . 7 ) in contact with the surface of the cylindrical shaft ( 2.1 ) stands. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the radially directed surface pressure between the cylindrical shaft ( 2.1 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) by a radially outside of the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) arranged annular clamping element is formed in the form of a hydraulic Hohlmantelspannbuchse or in the form of an equipped with teller spring-like spreading elements clamping bush. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the radially directed surface pressure between the cylindrical shaft ( 2.1 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) by a radially between the cylindrical shaft ( 2.1 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) arranged annular clamping element in the form of an inner clamping set ( 5 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) directly over the inner clamping set ( 5 ) in contact with the surface of the cylindrical shaft ( 2.1 ) stands. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the radially directed surface pressure between the cylindrical shaft ( 2.1 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) by a radially between the cylindrical shaft ( 2.1 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) arranged annular clamping element in the form of an inner clamping set ( 5 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) via the inner clamping set ( 5 ) and one radially inside the inner clamping set ( 5 ) arranged reducing bushing ( 6 . 7 ) in contact with the surface of the cylindrical shaft ( 2.1 ) stands. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the Reduzierbuchse ( 6 ) from a socket body ( 6.1 ) with a socket body ( 6.1 ) in the axial direction completely severing longitudinal slot ( 6.2 ) consists. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the Reduzierbuchse ( 7 ) from a socket body ( 7.1 ) with at least two from a first plane surface ( 7.3 ) outgoing non-continuous first longitudinal slots ( 7.2 ) and at least two from a second plane surface ( 7.5 ) outgoing and also not continuous second longitudinal slots ( 7.4 ) and that the first longitudinal slots ( 7.2 ) and second longitudinal slots ( 7.4 ) are arranged alternately in the circumferential direction. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the Reduzierbuchse ( 6 . 7 ) one over the outer contour of the cylindrical sleeve body ( 6.1 . 7.1 ) radially projecting sleeve projection ( 7.6 ), which is used as axial stop of Reduzierbuchse ( 6 . 7 ) in the inner clamping set ( 5 ) serves. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) by an additional radially outwardly disposed and consisting of one or more layers of composite material composite bandage ( 1.6 ) is stabilized so that it withstands high internal radial pressures and resulting increased circumferential forces. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) by an additional radially outwardly arranged annular metal bandage ( 1.7 ), preferably of a light metal is stabilized so that it withstands high internal radial pressures and resulting increased circumferential forces. Drive hollow shaft ( 1 ) According to at least one of the preceding claims, characterized in that the shaft consists of a conical shaft ( 2.2 ) is formed, that the radially directed surface pressure between the conical shaft ( 2.2 ) and the tubular end ( 1.5 ) of the hollow drive shaft by a radially between the conical ( 2.2 ) and the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) arranged inner clamping set ( 5 ), that the inner clamping set ( 5 ) from a cone bushing ( 5.4 ), a clamping nut ( 5.6 ) and concentric with the conical shaft ( 2.2 ) connected threaded pin ( 5.5 ) that the tubular end ( 1.5 ) of the hollow drive shaft ( 1 ) directly over the cone bushing ( 5.4 ) in contact with the surface of the conical shaft ( 2.2 ) and that the cone bushing ( 5.4 ) inside a conical surface of the conical shaft ( 2.2 ) has corresponding shape and outside a cylindrical shape. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the construction of the outer or inner clamping set ( 4 . 5 ) involved inner or outer cone bushes ( 5.1 . 4.1 ) or cone body ( 5.2 ) or cone bushings ( 5.4 ) have a continuous slot in the radial and axial direction. Drive hollow shaft ( 1 ) according to at least one of the preceding claims, characterized in that the components of clamping ring ( 3 ), Outer clamping set ( 4 ), Inner clamping set ( 5 ) and reducing bush ( 6 . 7 ) are made of light metal.

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