DE102009013566A1 - Clamping device for use in slip-on gear mechanism in motor, has hollow shaft comprising axial elongated hole with projection on axis of hollow shaft covering overall axial length of shrinkage area, where elongated hole is closed - Google Patents

Abstract

The device has a hollow shaft (10) fastened to a solid shaft, and a shrinkage disk for generating radial shrinkage force on a shrinkage area (14) of the hollow shaft. The hollow shaft is provided with an axially closed elongated hole (15). The axial elongated hole has a projection on an axis of the hollow shaft covering the overall axial length of the shrinkage area, where the elongated hole is closed. A recess is provided at ends of the elongated hole. The shrinkage area is provided at an end of the hollow shaft.

Description

The The invention relates to a tensioning device with one on a solid shaft to be fixed hollow shaft and a shrink disc for generating a radial shrinkage force on a shrinkage region of the hollow shaft. The invention further relates to a slip-on with a clamping device according to the invention.

From the prior art - eg. The DE 42 30 941 C2 or the DE 10 0 60 037 C1 - Clamping devices are known in which a seated on a solid shaft hollow shaft is positively connected to the solid shaft. The torque of one shaft can be transferred to the other shaft.

The tensioning device according to the DE 42 30 941 C2 generates the frictional connection by inserting a wedge-shaped bushing between the hollow shaft and the solid shaft. The disadvantage of this is that when inserting the wedge-shaped bush due to friction axial forces are transmitted to the hollow and / or the solid shaft, resulting in an axial displacement of the two shafts relative to each other. An exact axial positioning of the hollow shaft relative to the solid shaft is therefore not possible.

From the DE 100 60 037 C1 a tensioning device is known in which the clamping force is achieved by deformation of the hollow shaft. By means of a shrinking force applied by a shrink disk, the inner diameter of the hollow shaft can be varied within a small range. Due to the deformation of the hollow shaft, a wedge-shaped bush resting against the hollow shaft is pressed against the solid shaft. It comes to non-positive connections between solid shaft and bushing and between bush and hollow shaft. Due to the wedge shape of the bush also creates an axial separation force between hollow and solid shaft, which acts on an axial displacement of the hollow shaft relative to the solid shaft. To reduce the axial separation force in the device according to DE 100 60 037 C1 additional elements must be provided.

are no additional security elements provided serves the frictional connection between a wedge-shaped socket and the hollow shaft not only for the transmission of torque between the full wave and the half wave but also the axial one Securing the wedge-shaped, then self-locking bush. This reduces the maximum transmissible torque.

comes it after the tensioning of the device according to the Prior art to a relative movement between the hollow and the solid shaft may cause a shift of self-locking Socket come, which solved the non-positive connection becomes.

Small deviations of the diameter of the solid shaft from the nominal diameter can be compensated by displacement of the wedge-shaped sleeve relative to the hollow shaft. By holding different wedge-shaped bushings with identical outer cone, but different inner diameter, a hollow shaft can be at full shafts with different nominal diameters by the clamping device according to DE 100 60 037 C1 be attached. However, the wedge shape of the jacks is mandatory, resulting in a complex and expensive production.

task the present invention is one over the state The technique improved clamping device for mounting a hollow shaft to create a full wave.

outgoing From the above-mentioned prior art, this object is achieved by a tensioning device according to the main claim solved. Advantageous embodiments result from the dependent claims.

Therefore The invention relates to a tensioning device comprising one a solid shaft to be fixed hollow shaft and a shrink disc for Generation of a radial shrinkage force on a shrinkage area the hollow shaft, wherein the hollow shaft is a substantially axial closed Has slot which covers the entire axial length of the shrinkage area, or wherein the hollow shaft a plurality of substantially axial slots whose projection onto the axis of the hollow shaft the entire axial length of the shrinkage area covered, wherein at least one slot is closed.

The Invention further relates to a slip-on, in which a Clamping device according to the invention is provided.

at a hollow shaft is a component that has a round axial opening having. At least in a partial area of the opening along on its axis, the component is round and round on its outside preferably carried out concentrically with the opening. In this part of the range of shrinkage of the hollow shaft is arranged. When opening, it may, for example, to a blind hole or a through hole act.

If a radial shrinkage force is generated on the hollow shaft in the shrinkage area by the shrinking disk, it is elastically deformed and the inside diameter of the hollow shaft is reduced. By at least one elongated hole is provided according to the invention, the hollow shaft is deformable in a wide range. Because of the oblong hole, the hollow shaft can deform in the circumferential direction at least in the shrinkage region, whereby forces in the circumferential direction in the shrinkage region of the hollow shaft can be reduced. Forces in the circumferential direction, which counteract a deformation of the hollow shaft to reduce the inner diameter, can be significantly reduced.

One according to the invention elongated hole breaks through the wall the hollow shaft and extends in a substantially axial direction, d. H. the direction of the slot and the axis of the hollow shaft are at an angle of less than 45 °, preferably less as 30 ° to each other. The slot can be parallel in particular be arranged to the axis of the hollow shaft. The slot preferably has a longitudinal extension which is at least 1.5 times, more preferably at least 2 times, more preferably at least 4 times as large like the transverse extension in the central area of the slot.

According to the invention provided that the hollow shaft is a substantially axial closed slot which covers the entire axial length of the shrinkage region, or that the hollow shaft a plurality of substantially axial slots whose projection onto the axis of the hollow shaft the entire axial length of the shrinkage area covered, wherein at least one slot is closed. That means to everyone Point along the length of the shrinkage area the hollow shaft is pierced by at least one slot and in the shrinkage area the hollow shaft no continuous material path in the circumferential direction should be present, the force on deformation of the shrinkage area in the circumferential direction, which counteracts the deformation causes.

By doing the inner diameter of the hollow shaft decreases in the shrinkage region, There is a frictional connection between the hollow shaft and the solid shaft. The full wave is a component that at least in a part on its outside is round. She is with This part is inserted into the hollow shaft so that it is in Shrinkage of the hollow shaft comes to rest. A full wave in the Meaning of this invention is characterized in that the part the solid shaft, which comes to rest in the shrinkage area of the hollow shaft, less deformable than the hollow shaft in the shrinkage area. As a result, then a non-positive connection can be achieved.

The Areas over which a frictional connection comes to pass, concentric with the common axis of hollow and solid shaft. The frictional connection is used exclusively for the transmission of the Torque. A maximum transmittable torque reducing power can not be applied due to the adhesion. An unintentional axial displacement of the solid shaft opposite the hollow shaft during assembly due to separation forces is excluded as well as a release of the compound by axial displacement of the solid shaft relative to the hollow shaft after installation. The latter will be without additional Achieved components.

at the non-positive connection becomes the power transmission between the hollow shaft and the solid shaft in the shrinkage region of Hollow shaft ensured solely by the adhesive force due to friction. The adhesive force is determined by the coefficient of friction between the Hollow shaft and the full wave influenced. The floor surfaces two waves involved in the non-positive connection can be specially prepared to the coefficient of friction to increase. In particular, they can be addressed Roughened surfaces or provided with axially extending corrugations be.

It is preferred when the axial slot with respect to an optimized shape has the tension in the material. Especially at the ends of the slot Voltage peaks can occur when the hollow shaft is in the shrinkage area is deformed and is and the hollow shaft is twisted by a torque. It is therefore preferable if at least one end of the slot a breakthrough is provided by the hollow shaft whose extent perpendicular to the axial direction of the elongated hole larger is the width of the slot. This allows local voltage peaks, which can lead to damage of the hollow shaft, effectively avoided. The breakthrough may be a act round hole whose diameter is larger is the width of the slot. The breakthrough is preferably outside the shrinkage area.

It is preferred when the shrinkage region at one end of the hollow shaft located. As a result, the placement of the shrink disk on the hollow shaft relieved, because then they are not far over the hollow shaft must be pushed. Besides, none are others, possibly formed on the outside of the hollow shaft or attached elements when mounting the shrink disc in the Path.

It is preferred if a first elongated hole and a second elongated hole are provided, the projection of which overlaps onto the axis of the hollow shaft in the shrinkage region. In this case, the projection of the first and the second elongated hole on the axis of the hollow shaft in the shrinkage region is longer than the projection of the first elongated hole on the axis of the hollow shaft in the shrinkage region. By the first and the second slot in the axial direction of the hollow shaft overlap there is no continuous material path in the circumferential direction in the shrinkage region of the hollow shaft, which could cause a force in the circumferential direction, which counteracts the deformation upon deformation of the shrinkage region. By providing a first and a second elongated hole, a better torsional rigidity is achieved without limiting the deformability with respect to a hollow shaft with a single, continuous slot in the shrinkage region.

In an advantageous embodiment, the hollow shaft so many slots on that whole shrinkage area repeatedly covered by the projection of the slots on the axis becomes.

The latter especially if the first slot is closed and the second slot is made open on one side. is the shrinkage area at one end of the hollow shaft, the second Slot at one end can no longer be closed because otherwise a continuous material path in the circumferential direction would be present along with aimed at reduction the diameter of the hollow shaft create a force in the circumferential direction would counteract a corresponding deformation. Reduce open, axially extending slots on one side The torsional stiffness of a shaft is usually more than closed Slots. By the second slot but not over extends the entire shrinkage range, the torsional rigidity the hollow shaft due to at least one unilaterally open slot also not weakened over the entire shrinkage range. In order to reduce the torsional rigidity low to keep, preferably the closed slot is shorter as the part of the closed long hole in the shrinkage area.

It is preferred if the number of closed slots greater than the number of open slots. Since the deformability of a wave in relation to its circumference in the Usually through an open slot stronger than through closed slot is increased, the number of open slots are smaller than the number of closed ones. The torsional rigidity of the hollow shaft in the area of the second slots is reduced less, without causing a reduction the mentioned deformability comes. It is, of course, natural also possible, as many open slots as to provide closed slots. This will achieve that the deformation over the entire shrinkage range uniform he follows.

It An adapter socket can be provided which is in the shrinkage area can be arranged between the hollow shaft and the solid shaft. With help The adapter socket makes it possible to use a solid shaft and a Hollow shaft with different nominal diameter to connect together. The adapter socket has a constant wall thickness, why a backup against axial displacement as in a wedge-shaped socket eg. Not required by self-locking is. The frictional connections between the hollow shaft and socket and between socket and solid shaft are used solely for transmission of torques. The maximum transmittable torque is not reduced by the adapter socket. Also, the non-positive connection by axial displacement of the hollow shaft relative to the solid shaft unsolved. By making the hollow shaft a constant wall thickness has, their production is particularly cost and can already be made with simple machines and tools become.

It is preferred when the adapter socket is slotted. That means, that the adapter socket in the axial direction a continuous slot in its wall. This will cause the tangential deformability the adapter socket greatly increased.

The Adapter bushing may preferably at one axial end a collar have, the outer diameter larger is the inner diameter of the shrink disk. This collar then projects radially outward. Once the shrink disk is subtracted from the hollow shaft, automatically the adapter socket deducted from the full wave with. This facilitates disassembly especially if the adapter socket between the solid shaft and the undeformed hollow shaft is clamped and / or wedged.

Around the advantage of increased deformability of the hollow shaft completely To be able to exploit, must also shrink disc for be designed according to large deformations. Therefore it is preferred if the shrink disk comprises a press ring, which is preferably slotted axially.

The Invention also relates to a slip-on with a clamping device according to the invention. jigs for mounting a hollow shaft on a solid shaft in particular used with slip-on gearboxes. These are transmissions, which are plugged onto the shaft, for example, a motor. Show the slip-on gearbox to drive shaft as a hollow shaft for receiving the shaft of the Motors on. The two shafts are then fitted with a tensioning device positively connected. At the hollow shaft is at least a gear attached, which together with other gears the actual transmission forms up to an output shaft. To explain the clamping device of the invention Slip-on gear is referred to the above statements.

The invention will now be described with reference to advantageous Embodiments described by way of example with reference to the accompanying drawings. Show it:

1 a schematic representation of a hollow shaft of a first embodiment of a clamping device according to the invention;

2a -D: schematic representations of variants of the hollow shaft 1 ;

3 a schematic representation of a hollow shaft of a second embodiment of a clamping device according to the invention;

4a -B: schematic representations of variants of the hollow shaft 3 ;

5 a hollow shaft of a third embodiment of a tensioning device according to the invention;

6a C: the third embodiment of a clamping device according to the invention with the hollow shaft 5 ; and

7 a first embodiment of a slip-on with the clamping device 6 ,

In 1 is only the hollow shaft 10 a first embodiment of a clamping device according to the invention shown. An embodiment of a complete clamping device will be described later with reference to the embodiment in 6a -C explained in more detail.

The hollow shaft 10 has an axial opening 11 on, which can be designed both as a through hole, as well as a blind hole. In the schematic representation in 1 is the outside 12 the hollow shaft 10 also round and concentric with the opening 11 arranged. The hollow shaft 10 thus has a wall 13 with a constant wall thickness.

The hollow shaft 10 has a shrinkage area 14 on whose limitation in 1 is shown as dashed lines. At the hollow shaft 10 according to 1 is the shrinkage area of the ends of the hollow shaft 10 spaced.

About a shrink disk (not shown) can in the shrinkage area 14 a radial shrinkage force are generated, which is a deformation of the hollow shaft 10 in the shrinkage area 14 Result: The diameter of the opening 11 in the shrinkage area 14 decreases. Is in the opening 11 a solid shaft (not shown) is inserted and reduces the inner diameter of the opening 11 in the shrinkage area 14 to a sufficient extent, there is a frictional connection between the hollow shaft 10 and the full wave.

For a sufficient deformability of the hollow shaft 10 in the shrinkage area 14 to allow, is an axial slot 15 intended. At the slot 15 it is a continuous opening in the wall 13 the hollow shaft 10 , In 1 the direction of the long hole runs 15 parallel to the axis (not shown) of the hollow shaft 10 and extends over the entire shrinkage area 14 , This also extends the projection of the slot 15 on the axis of the hollow shaft 10 over the entire axial length of the shrinkage area 14 ,

By over the entire axial length of the shrinkage area 14 in the circumferential direction at least one slot 15 is provided, the deformability of the hollow shaft can be 10 in the shrinkage area 14 increase, especially in the direction of their size. Forces in the circumferential direction, the reduction of the diameter sers the opening 11 counteract, are so greatly reduced.

In 2a is a development of the hollow shaft 10 out 1 in the area of the shrinkage area 14 shown. The slot 15 extends over the entire shrinkage area 14 , with the ends 16 the long hole 15 lie outside of the shrinkage area. This will ensure that the ductility of the hollow shaft 10 over the entire shrinkage range 14 is equal to.

It is possible that more than one slot 15 in the shrinkage area 14 the hollow shaft 10 is provided. In 2 B is an example of a hollow shaft 10 shown, the two slots 15 in the shrinkage region. The individual slots 15 have the same characteristics as the slot 2a , which is why reference is made to the statements there.

By providing one or more slots 15 , as in 2a respectively. 2 B shown, the torsional stiffness of the hollow shaft 10 in the shrinkage area 14 weakened. In order to keep this weakening as low as possible, it may be provided instead of a continuous elongated hole 15 as in 2a a first slot 15 ' and a second slot 15 '' to provide, each one end 16 ' in the shrinkage area 14 is arranged and overlap in the axial direction. A corresponding schematic representation is in 2c played.

The provision of a first and a second elongated hole 15 ' . 15 '' offers the advantage that the torsional stiffness of the hollow shaft 10 in the shrinkage area 14 less reduced than one continuous slot 15 according to 2a respectively. 2 B , By the long holes 15 ' . 15 '' overlap in the axial direction is the deformability of the hollow shaft 10 in the shrinkage area 14 but not limited, as continue over the entire length of the shrinkage area 14 in the circumferential direction at least one slot 15 ' . 15 '' is provided. The projection of the two slots 15 ' . 15 '' in the sum thus extends over the entire axial length of the shrinkage region 14 , wherein said projection in the shrinkage region is longer than the corresponding projection of the oblong hole 15 ' alone.

Similar to a continuous slot 15 according to 2a respectively. 2 B there is one end each 16 the long holes 15 ' . 15 '' outside the shrinkage area 14 , As a result, a sufficient deformability over the entire shrinkage range 14 ensured. It is of course possible, more than a first slot 15 ' or as a second slot 15 '' provided. It is advantageous if the number of first slots 15 ' equal to the number of second slots 15 '' is.

At oblong holes 15 . 15 ' . 15 '' in the hollow shaft 10 It can be deformed by a shrink disk and torsion to voltage peaks in the area of the ends 16 . 16 ' come to the damage to the hollow shaft 10 being able to lead. To avoid potentially damaging voltage peaks, you can - as in 2d presented - a breakthrough 17 at least one end 16 a long hole 15 be provided. The breakthrough 17 has an extent perpendicular to the direction of the elongated hole, which is greater than the width of the oblong hole 15 , The breakthrough 17 For example, it can be made round and made with a drill, whereby the diameter of the drill must then be greater than the width of the elongated hole 15 , A breakthrough 17 can also be at both ends 16 the long hole 15 be provided. Are several slots provided (see. 2 B ) is preferred if each slot with corresponding openings 17 is provided. In the provision of a first and a second slot 15 ' . 15 '' (see. 2c ) can both the ends 16 outside the shrinkage area 14 the hollow shaft 10 lie, as well as the ends 16 ' in the shrinkage area 14 lie, with a breakthrough 17 be provided.

In 3 is a hollow shaft 10 a second embodiment of a clamping device shown in which the shrinkage region 14 not as in the previous embodiments of the end of the hollow shaft 10 is spaced, but at one end of the hollow shaft 10 located. The shrinkage area 14 is in 3 limited by the dashed line. Otherwise corresponds to the hollow shaft 10 in 3 the schematic representation of the hollow shaft 10 out 1 , which is why reference is made to the statements there.

The shrinkage area 14 located at one end of the hollow shaft 10 , To ensure maximum torsional rigidity, instead of a continuous slot 15 two long holes 15 ' . 15 '' provided, with the two slots 15 ' . 15 '' overlap in the axial direction. This is also in 4a clearly, the unwinding of the hollow shaft 10 out 3 in the area of the shrinkage area 14 reproduces.

In the illustrated embodiment, the first slot 15 ' a closed slot whose one end 16 outside the shrinkage area and the other end 16 ' within the shrinkage range 14 located. The second slot 15 '' is a one-sided open slot whose one end 16 ' in the shrink area 14 the hollow shaft 10 located. The first slot 15 ' and the second slot 15 '' overlap in the axial direction.

It can also be more than a first or a second slot 15 ' . 15 '' be provided. Because the deformability of a hollow shaft through a one-sided open slot 15 '' increased more than by a closed slot 15 ' , can the number of unilaterally open slots 15 '' less than the number of closed slots 15 ' , wherein nevertheless a constant deformability of the hollow shaft 10 throughout the shrinkage range 14 is reached. But it is also possible, as many first 15 ' like second slots 15 '' provided.

As the torsional stiffness of the hollow shaft 10 through a one-sided open slot 15 '' is weakened more than by a closed on both sides slot 15 ' , it is preferred if the oblong hole closed on both sides 15 ' longer than the unilaterally open slot 15 '' , It does not depend on the total length of the slot 15 ' but only on the part in the shrinkage area 14 the hollow shaft is arranged. In 4d is an exemplary arrangement of a first and a second elongated hole 15 ' . 15 '' shown. As the two slots 15 ' . 15 '' continue to overlap in the axial direction, the deformability of the hollow shaft 10 in the shrinkage area 14 not reduced. For the number of the first 15 ' and second slots 15 '' that applies to 4c Said.

Similar to the embodiment according to 1 and 2 can also in the embodiment according to 3 and 4 a breakthrough 17 at one end 16 a long hole 15 ' be provided. This will be in 4b shown. For an explanation of the comments on 2d ver grasslands.

In 5 is a hollow shaft 10 a third embodiment of a clamping device according to the invention - the later with reference to 6a -C is explained in more detail - shown. The hollow shaft 10 has a shrink area at one of its ends 14 on. In this shrinkage area 14 is the hollow shaft 10 like the wave 10 out 3 shaped. In the area outside the shrinkage area 14 has the hollow shaft 10 on its outside elevations 18 on.

In the shrinkage area 14 the hollow shaft 10 are three first long holes 15 ' , as well as three second slots 15 '' arranged. The first long holes 15 ' are designed as closed on both sides slots, one end 16 ' in the shrink area 14 located and the other end 16 outside the shrinkage area 14 is arranged. At the end 16 outside the shrinkage area 14 is a breakthrough 17 designed to reduce voltage spikes.

The second slots 15 '' are designed as unilaterally open slots, the end 16 '' in the shrinkage area 14 is arranged. The first long holes 15 ' overlap with the second slots 15 '' in the axial direction. The second slots 15 '' are shorter than the range of the first slots 15 ' who is in the shrinkage area 14 located. This will prevent the torsional rigidity of the hollow shaft 10 in the shrinkage area 14 is reduced to a high degree. At the same time, the deformability of the hollow shaft 10 in the shrinkage area 14 sufficiently increased.

In the 6a C is the third embodiment of a clamping device according to the invention 1 with the hollow shaft 10 out 5 shown. It shows 6a an exploded view of the clamping device 1 . 6b the assembly of the tensioning device 1 and 6c a three-quarter section through the jig 1 , In addition to the clamping device 1 is in the 6a -C also a part of a full wave 20 shown.

The tensioning device 1 includes next to the hollow shaft 10 another shrink disk 2 , With this shrink disk, a radial shrinkage force on the shrinkage area 14 the hollow shaft are generated. This is the shrink disk 2 on the hollow shaft 14 plugged so that they are in the shrinkage area 14 the hollow shaft 10 to come to rest. The shrink disk 2 consists of two, in the axial direction relative to each other movable rings 3 . 3 ' , on the inside of a preferably slotted press ring 4 is applied. Through the screws 5 let the two rings 3 . 3 ' move relative to each other so that the inner radius of the press ring 4 reduced. This is done by a wedge shape of the press ring 4 on its outside and corresponding sliding surfaces on the rings 3 . 3 ' be achieved. In the prior art further embodiments of shrink discs are known, which can be used arbitrarily for the clamping device according to the invention.

By changing the inner radius of the press ring 4 the shrink disk 2 becomes a radial shrinkage force on the shrinkage area 14 the hollow shaft 10 generated. Due to the previously described slots 15 ' . 15 '' can the hollow shaft 10 in the shrinkage area 14 deform easily. Due to the deformation of the hollow shaft 10 and the non-deformation of a solid shaft 20 There is a powerful connection between the hollow shaft 10 and full wave 20 , This power connection transmits torques due to the parallel to the axis of the two shafts force transmission surface. Separation forces o. Ä. Do not occur.

Corresponds to the nominal diameter of the solid shaft 20 not the nominal diameter of the hollow shaft 10 , can be an adapter socket 6 be provided. This adapter socket 6 has a substantially constant wall thickness, and a continuous axial slot 7 on. Due to the constant wall thickness is the production of the adapter socket 6 very easy and inexpensive. The slot 7 allows increased deformability with respect to the diameter of the adapter socket 6 ,

At one end is the adapter socket 6 with a collar 8th provided whose outer diameter is greater than the inner diameter of the shrink disk 2 , With this collar 8th protrudes the adapter socket 6 radially over the hollow shaft 10 , Will the shrink disk 2 again from the hollow shaft 10 subtracted, then automatically the adapter socket 6 between full wave 20 and hollow shaft pulled out. This facilitates the disassembly of the clamping device according to the invention 1 especially if the adapter socket 6 between the wave 20 and hollow shaft 10 calcified or jammed. As on the adapter socket 6 no separation forces act, it does not need to be further secured.

To ensure that the axles of the solid shaft 20 and the hollow shaft 10 can run congruent, also at the end of the hollow shaft 10 at which the shrinkage area 14 not provided, one with the adapter socket 6 identical socket 6 ' be used. The socket 6 ' solely serves the parallel and concentric alignment of the two waves 10 . 20 and comes with a fuse element 9 kept in position. A torque transmission between solid shaft 20 and hollow shaft 10 takes over the socket 6 ' not happening.

In 7 is an embodiment of a slip-on 30 with the clamping element 1 out 6a -C shown.

On the outside of the hollow shaft 10 is a gear 21 fastened, which with gears not shown a gear up to a drive shaft (indicated by axis line 24 ). The slip-on gear 30 further comprises a housing 23 in which the hollow shaft 10 with ball bearings 22 is rotatably mounted.

At the full wave 20 in 7 it is the shaft of a working machine, z. B. a conveyor belt roller (not shown) to which the slip-on 30 is plugged. The slip-on gear 30 then with the tensioning device 1 at the full wave 20 attached. For the operation of the clamping device 1 will apply to the comments 6a -C.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 4230941 C2 [0002, 0003]
• - DE 10060037 C1 [0002, 0004, 0004, 0007]

Claims (12)

Clamping device ( 1 ), comprising one on a full wave ( 20 ) to be fastened hollow shaft ( 10 ) and a shrink disk ( 2 ) for generating a radial shrinkage force on a shrinkage region ( 14 ) of the hollow shaft ( 10 ), characterized in that the hollow shaft ( 10 ) a substantially axial closed slot ( 15 ), which covers the entire axial length of the shrinkage region ( 14 ), or that the hollow shaft ( 10 ) a plurality of substantially axial slots ( 15 . 15 ' . 15 '' ) whose projection onto the axis of the hollow shaft ( 10 ) the entire axial length of the shrinkage region ( 14 ), wherein at least one slot ( 15 ' . 15 '' ) closed is. Device according to claim 1, characterized in that at least one end ( 16 . 16 ' ) of the slot ( 15 . 15 ' . 15 '' ) a breakthrough ( 17 ) is provided whose extension perpendicular to the axial direction of the elongated hole ( 15 . 15 ' . 15 '' ) is greater than the width of the slot ( 15 . 15 ' . 15 '' ). Device according to claim 1 or 2, characterized in that the shrinkage region ( 14 ) at one end of the hollow shaft ( 10 ) is located. Device according to one of the preceding claims, characterized in that the hollow shaft ( 2 ) a first slot ( 15 ' ) and a second slot ( 15 '' ) and that the projection of the first slot ( 15 ' ) on the axis of the hollow shaft ( 10 ) with the projection of the second slot ( 15 '' ) on the axis of the hollow shaft ( 10 ) in the shrinkage area ( 14 ) overlaps. Apparatus according to claim 4, characterized in that the common projection of the first elongated hole ( 15 ' ) and the second slot ( 15 '' ) has on the axis of the hollow shaft a greater longitudinal extent than the projection of a slot ( 15 ' . 15 '' ). Device according to one of claims 1 to 5, characterized in that a first slot ( 15 ' ) closed and a second slot ( 15 '' ) is open on one side. Apparatus according to claim 6, characterized in that the number of closed slots ( 15 ' ) is greater than the number of open slots ( 15 '' ). Apparatus according to claim 6, characterized in that the number of closed slots ( 15 ' ) equals the number of open slots ( 15 '' ). Device according to one of the preceding claims, characterized in that for insertion between the shrinkage region ( 14 ) of the hollow shaft ( 10 ) and the full wave ( 20 ) an adapter socket ( 6 ) is provided, which is preferably slotted axially. Apparatus according to claim 9, characterized in that the adapter socket ( 6 ) at its one axial end of a molded collar ( 8th ), whose outer diameter is greater than the inner diameter of the shrink disc ( 2 ). Device according to one of the preceding claims, characterized in that the shrink disc ( 2 ) a press ring ( 4 ), which is preferably slotted axially. Slip-on gear ( 30 ), characterized in that the slip-on ( 30 ) a tensioning device ( 1 ) according to one of claims 1 to 10.