DE102013015442A1 - Winding head drive for a winding machine and open segment motor - Google Patents

Abstract

The invention relates to a winding head drive (100, 200) for a winding machine for winding or bundling elongate objects, such as cables and cable strands, with a belt from a supply, characterized in that the winding head drive (100, 200) has a stator (110 , 210) and a substantially hollow cylindrical rotor (120, 220) having an inner diameter, wherein the rotor (120, 220) is disposed within a substantially cylindrical inner space of the stator (110, 210), and wherein the stator (110, 210) electromagnetically excitable coils (114, 214) and means (112, 212) for supporting the rotor (120, 220).

Description

The invention relates to a winding head drive for a winding machine for winding or bundling elongated objects, such as cables and cable strands, with a belt from a supply and an open segment motor, which has a stator with a substantially cylindrical interior and one inside the stator Rotor includes.

For a better clarity of cables and an increase in the safety of cables and cable strands, in particular fire protection, cables and cable strands are wrapped in the technology with tape material. Further applications of wound cables and cable bundles are the electromagnetic compatibility or the EMC protection and the vibration or rattle protection. With the help of the strip material not only individual cables are wound into bundles of cables in order to achieve a better clarity, but it is also increased security, since in cluttered cables, especially smoldering fires are often detected too late. The strip material used to wind cables may be made of flame retardant materials to improve fire safety.

As the need for cabling, for example, due to increasingly electronic-equipped vehicles in the automotive industry, computer networks or telecommunications equipment, is increasing, the winding of cables and other elongated objects has been simplified through the use of special winding machines. A hand-operated bandage device has been described, for example, in the document WO 03/010780 disclosed. Powered banding machines are also known in the art. A belt-driven banding machine was in the patent DE 36 04 509 C2 disclosed. The taping machine has a winding disk, which can be driven in rotation via a drive belt.

Winding heads of winding machines driven by an external motor by means of a drive belt are also known in the art. A conventional belt driven winding head with open design is in the 1 shown in a side view. The conventional winding head 300 with belt drive 300 consists of a winding head with a static outer ring 310 and one inside the outer ring 310 arranged race 320 for winding elongate objects, such as cables and cable harnesses, and a spatially separated from the winding overhang 300 arranged drive unit, such as an external electric motor 350 , wherein the torque generated by a drive belt 380 on the race 320 the winding head 300 is transmitted.

The winding head has, in addition to a hollow inner area for specific configuration options on winding techniques, a segment opening into which the cables to be wound can be introduced into the inner region of the winding head and thus the cables can also be wound in central sections.

The drive unit comprises an electric motor 350 such as a servo motor, which is sold separately. As a drive belt or transmission belt 380 a flexible toothed belt can be provided. Flat belts or V-belts can also be provided, however, their use compared to timing belt technically less useful, since flat and V-belt, in contrast to timing belt when driving the winding head slip. Slippage not only reduces energy efficiency, but also the precision of the winding head itself is impaired, as preselected rotation angles are imprecisely transmitted to the bead head by the drive belt (flat or V-belt). On the other hand, toothed belts are essentially subject to belt elongation, as is the case with flat or V-belts. In addition, in a belt drive, energy loss due to friction generally occurs. The drive belt 380 transmits the drive torque from the drive shaft of the electric motor 350 on the race 320 the winding head, he also runs over pulleys 382 and at least one tension roller 384 ,

The 2 shows a conventional winding head with belt drive in a closed design 400 in a side view. The winding head in a closed design consists, like the open winding head, of a static outer ring 410 and an inner race 420 , The winding head in a closed design according to the prior art is also provided with an externally from the winding head arranged electric motor 450 with the help of a drive or transmission belt 480 driven, the drive belt 480 over pulleys 482 and at least one tension roller 484 from the electric motor 450 to the race 420 the winding head is guided. In contrast to the open design of the winding head can be introduced with a winding head in a closed design cables or harnesses only at their respective cable ends beginning or ending in the winding head. For a winding in the middle sections of the cables, the cables must accordingly be carried out correspondingly far before winding or be pulled out again after winding.

Conventional winding head drives have disadvantages due to their belt drive. Not Only when using flat or V-belts, but also when using a toothed belt friction losses must be accepted. In addition to the friction occur stretching effects of the timing belt, which also lead to the reduction of energy efficiency. Belt drives are also sensitive to external influences such as dust, dirt or liquids. In addition, the separately arranged in the vicinity of the winding head electric motor, as well as the required deflection devices for the transmission belt take additional space. Finally, for safety reasons, the circulation area of the transmission belt must be protected by a housing which requires additional space and considerably increases the weight of the winding machine.

Another disadvantage of conventional winding machines with a belt drive is the unavoidable noise level associated with operation, which may require hearing protection for operators using larger machines on an industrial scale.

It is therefore an object of the present invention to make available a winding head drive for a winding machine, which on the one hand can be operated energy-efficiently and which, on the other hand, has a particularly space-saving design. In addition, the safety against a belt drive should be increased and the maintenance requirements of the drive should be reduced. The object is also to provide a winding head drive available, which ensures smooth running even at higher speeds, so that even with prolonged exposure of the operating personnel to ear protection can be dispensed with.

This object is achieved by a winding head drive for a winding machine according to the preamble of claim 1 with the features of the characterizing part of claim 1 and an open segment motor according to the preamble of claim 16 with the features of claim 16. Preferred embodiments and embodiments of the winding head drive will be apparent from of the dependent claims 2 to 15. Preferred embodiments and embodiments of the open segment motor will be apparent from the dependent claims 17 to 26.

According to claim 1, a winding head drive for a winding machine for winding or bundling of elongated objects, such as cables and cable strands, provided with a tape from a supply, which is designed such that the winding head drive a stator and a substantially hollow cylindrical rotor having an inner diameter wherein the rotor is disposed within a substantially cylindrical interior of the stator, and wherein the stator has electromagnetically excitable coils and means for supporting the rotor.

By integrating the drive in the winding head of the transmission belt can be omitted without replacement. This eliminates the problems associated with the use of a transmission belt, such as maintenance intensity, running noise and energy losses. The winding head drive according to the invention can also be set up to save space and yet offers sufficient space for customer-specific solutions for winding cables or cable strands due to the cylindrical recess of the rotor. Safety at work is also increased, since in a winding head drive according to claim 1 only those components of the winding machine rotate, of which the operator also expects that they rotate. In that regard, the rotational movement is an immediate prerequisite for winding the cable or cable strands. In contrast, a transmission belt which is not operated in a closed housing can easily be overlooked by an inattentive or distracted operator of the winding machine, so that, due to the high rotational speeds, serious accidents at work can be lamentable. The winding head drive according to claim 1 can also be operated for a long time without hearing protection measures, since the rotor rotating inside the stator with the supplied tape is particularly quiet to operate at average speeds of, for example, 1200 U / min.

A winding head drive is preferred in which the stator and the rotor are each open in a segment of their hollow body and preferably the interior of the rotor with the second inner diameter is freely configurable.

An open design of the winding head drive, each with an open segment portion of the rotor or stator allows the winding of elongate objects and in particular of cables or cable strands not only starting from the cable ends, but also, for example, in sections in central areas of the elongated objects to be wound.

It can be provided that the bearing of the stator is designed as a roller bearing and has bearing rollers, which are preferably arranged between the electromagnetically excitable coils.

Roller bearings offer a particularly inexpensive storage, the rollers are compatible with the rotors and their excitation means, such as permanent magnets, as they are less having magnetically inducible mass, such as a ball bearing.

It can also be provided that the electromagnetically excitable coils of the stator are designed as pole pieces.

Pole shoes represent a simply constructed form for the coils of the stator. In addition, the pole pieces are easy to manufacture and arrange in the stator of the winding head drive, whereby they are particularly inexpensive.

In addition, it can be provided that the electromagnetically excitable coils and the bearing rollers are arranged in sections alternately or alternately on the inner or outer circumference of the stator, preferably symmetrically. Their number is, for example, even (eg 6, 8, 12 bearing rollers), in particular eight bearing rollers (112, 212) are provided.

Due to the alternating arrangement of bearing rollers and the electromagnetically excitable coils a particularly compact and thus space-saving design of the stator is possible. For the storage of the rotor spaced by the coils bearing rollers are sufficient. For the generation of the rotational movement of the internal rotor already sufficient a few coils of the stator, in particular pole pieces to exert a rotating electromagnetic field on the rotor and to initiate a rotational movement of the rotor.

It may further be provided that the stator and rotor of the winding head drive have a closed design.

Although the closed design does not allow winding of elongate objects in their central portions, but requires a winding that begins at the cable ends, but is cheaper to manufacture. In addition, in the closed design, there is a balanced weight distribution in the rotor.

It is also preferred that the rotor has at least one permanent magnet and / or electromagnetically excitable coils.

With a permanent magnet can be achieved for the application of winding method for winding cables sufficient torque of the rotor. It is also advantageous that a rotor with a permanent magnet does not have to be supplied with energy in turn.

It is also preferred that the rotor has permanent magnets, which are arranged on the outer radial circumference of the rotor and are preferably embedded in the annular core of the rotor or wholly or partially raised mounted on the rotor.

A rotating or almost completely rotating permanent magnet of the rotor can be driven particularly well by the electromagnetic field generated by the coils or pole pieces of the stator.

It is particularly preferred that the bearing rollers of the stator have recesses for receiving the permanent magnets arranged on the rotor.

Recesses of the bearing rollers for receiving the rotors mounted wholly or partially sublime permanent magnets allow on the one hand a particularly inexpensive production of the rotor with externally mounted permanent magnets, on the other hand, the permanent magnets of the rotor - in spite of the bearing rollers - in an immediate spatial proximity to the coils or pole pieces of the stator to be brought.

It is further preferred that the existing of the stator and rotor electric drive is designed as a servomotor and is preferably either position, speed or torque controlled.

With a servomotor, a particularly precise wrapping of elongated objects and in particular of cables and cable strands can take place. Among other things, precise angles of rotation of the winding process can be set. By setting the exact position, speed or torque, a particularly homogeneous Bewicklungsvorgang can be ensured.

It may also be provided that the winding head drive has a sensor unit or angle encoder for reading the angle of rotation and / or the rotational speed.

With the aid of a sensor, the elongated object to be wound or the already wound elongate object can be scanned. At marked positions of the elongate article or wrapping tape, an automated stop of the winding process by the sensor may be initiated. The operator then does not need to pay attention to a particular position of the elongate object to be wound, and simply, after automatically stopping the winding operation, pulls the wound elongate object from the winding machine with an accurate wrapping result.

An advantageous embodiment provides that the winding head drive has an integrated braking device.

An integrated braking device of the winding head drive allows a comparison with a servo motor without brake function increased precision of Bewicklungsvorgangs.

In addition, it can be provided that the existing of stator and rotor electric drive is designed as a stepper motor, synchronous motor or three-phase motor.

A stepper motor, synchronous motor or three-phase motor are cheap and energy-efficient alternatives for an electric drive.

It is also particularly advantageous that the electric drive is operable in a range between 100 U / min to 3000 U / min, in particular between 1000 U / min and 2000 U / min, wherein preferably about 1200 U / min is provided as the average number of revolutions.

Rotation speeds in the range between 100 rpm and 3000 rpm enable a variety of possible winding processes for a wide variety of cables or cable strands with regard to their diameter and flexibility. In addition, a variety of strip materials can thus be used for the winding process. Between 1000 rpm and 1500 rpm, in particular at about 1200 rpm, there is an optimum range with regard to the winding speed and the achievable precision of the winding or bundling.

It is also particularly preferred that the supply of the tape is designed as a roll of tape, which is preferably positionable in or on the rotor, wherein more preferably a balance weight is provided.

An attached to the rotor reel or drum allows an efficient supply of the winding tape. The balance weight prevents imbalance due to the weight of the tape roll and from its support on an arm of the rotor. Typical strip materials are for example insulating materials made of refractory plastics, for example perfluoroalkoxyalkane (PFA), polyamides (PA), nitrile rubber, polyethylene, polypropylene, polyurethanes or PVC, which are mixed or coated with flame retardants. In addition to the strip materials made of the aforementioned plastics, it is also possible to use textile woven tapes, felt tapes, foam tapes or metal tapes, for example aluminum tapes.

According to claim 16, an open segment motor is provided which comprises a stator having a substantially cylindrical interior space and a rotor arranged in the interior of the stator, which is designed such that the rotor is substantially hollow cylindrical, and the stator electromagnetically excitable coils and means for Has storage of the rotor, wherein stator and rotor are each open in a segment of its hollow body.

An open segment motor, among other things, allows the insertion of elongate objects into the interior of the rotor for working and manufacturing processes that utilize the torque of the open segment motor, for example, for applying coatings or for surface treatment. By integrating the electric motor in the immediate work area, moreover, a transmission belt can be omitted, the use of which is associated with disadvantages such as increased maintenance requirements, loud operating noise or lower energy efficiency.

The advantages of the preferred embodiments and embodiments of the open segment motor result from the corresponding configurations and embodiments of the winding head drive for a winding machine.

Further preferred embodiments and further developments of the invention will become apparent from the following figures and the description of embodiments of the invention, which addresses the following figures. Show it:

1 A schematic representation of the open winding head with conventional belt drive in a side view according to the prior art;

2 A schematic representation of a closed winding head with conventional belt drive in a side view according to the prior art;

3 A schematic side view of an open winding head drive according to the invention without cover;

4 A schematic representation of the section along the line AA 3 the open winding head drive invention with lid;

5 A schematic perspective view of the open winding head drive according to the invention without a lid;

6 A schematic side view of a closed winding head drive according to the invention without cover.

The features and statements cited in the following description of the figures relate to embodiments of the invention and in particular are not to be regarded as limitations of the claimed winding head drive.

3 shows a schematic representation of an open winding head 100 with direct drive from the side. Under direct drive of a winding head 100 is the integration of the preferred electrical drive in the winding to understand. The outer area of the winding head 100 receives in the realization of the direct drive in addition to the storage of the impeller, the functionality of a stator 110 , In the stator 110 with a first inner diameter are then next to the storage, preferably in the form of several bearing rollers 112 is realized, in addition electromagnetic coils 114 available. In the illustrated embodiment, the coils 114 as pole shoes 114 realized. The bearing rollers 112 rotate around their axes 112a and thus support the rotational movement of the impeller, which in the direct drive according to the invention as a rotor 120 is executed. The rotor 120 with an outer diameter and a second inner diameter is preferably from the stator 110 through in 3 invisible permanent magnets energized and brought to a rotary motion. For the application of various winding techniques and bundling methods is the rotor 120 hollow inside. At the rotor 120 a changing table and a clamping ring can be arranged. The clamping ring has a holder for a roll of tape and an eye for inserting balancing discs. The rotational movement of the rotor 120 Finally, the product applications, that is, the winding and / or bundling of cables or cable harnesses for presettable operating parameters.

3 shows as mentioned at the beginning the open design of a directly driven winding head 100 ; the term "open" means that both the stator 110 as well as the rotor 120 each over an open segment 118 . 128 feature. Preferably, when the electric drive is turned off, the open segments become 118 . 128 from Stator 110 and rotor 120 brought to cover to be wound and / or bundled central portions of cables or cable strands in the interior of the winding head to be able to introduce. Without the open segments 118 . 128 from Stator 110 and rotor 120 Cables and cable strands could be wound or bundled starting only at one of the two cable ends. For better representation, the in 3 not shown cover from the stator 110 the winding head drive 100 away.

stator 110 and rotor 112 are preferably components of a servomotor that allows extremely accurate winding of cables, harnesses and other elongate objects. The servomotor is preferably designed to be position-velocity or torque-controllable, whereby position, rotational speed and / or torque are adjustable, thereby enabling a homogeneous wrapping or bundling process. For the precise recognition of the rotor position, the direct drive designed as a servomotor has at least one sensor which, for example, determines the relative angle of rotation, that is to say the angle of rotation of the rotor 112 in terms of its initial position, can read. A direct drive winding head designed as a servo motor 100 allows not only its precision but also a comparatively high speed of wrapping or bundling of elongate objects, in particular of cables and cable harnesses. The servomotor can also have built-in brake functionality that further enhances winding precision.

In principle, other types of electric motors are possible with a direct-drive winding head according to the invention, these are in particular a stepper motor, a synchronous motor or a three-phase motor.

A schematic representation of the section along the line AA 3 an open winding head drive 100 with lid 116 is in 4 shown. It should be noted that the lid 116 contrary to in 3 section line AA has been added. In the upper and lower area is the stator 110 arranged thereupon, close to the center of the figure oriented at both ends of the representation of the rotor 120 at. The center of the winding head drive 100 itself is free for the configuration of the facilities required in the winding processes or bundling techniques, such as holding arms. At the rotor 120 are permanent magnets 122 arranged either in the body of the rotor 120 are embedded or raised on the rotor 120 are set up. Also hybrids between fully embedded and fully raised permanent magnets 122 are in the winding head drive according to the invention 100 realizable. The pole shoes 114 and the bearing rollers 112 are preferably arranged alternately, so that in the open design, the number of bearing rollers 112 one more than the number of pole pieces 114 is increased.

The upper and lower area of the 4 differ in the configuration of the stator 110 because the section line AA was angled at one end. In the upper area is in the representation of 4 one as a pole piece 114 executed coil 114 to recognize. In the lower area, however, there is a bearing roller 112 in the drawing plane. The bearing roller 112 is about its axis 112a rotatably arranged. In the 4 illustrated bearing roller 112 has two bearing surfaces 112b on which at the outer areas of the bearing roller 112 are arranged. In the central area has the bearing role 112 however, a recess 112c on, which are more or less raised on the rotor 120 arranged permanent magnets 122 offers enough space. In the illustration shown take the permanent magnets 122 the recesses only about half of it. Basically, the bearing rollers 112 also in a simplified version with a continuous support surface 112b be provided. Then the permanent magnets have to 122 however completely in the rotor 120 be embedded.

5 gives a schematic perspective view of the open winding head drive according to the invention 100 without a lid again. The embodiment corresponds to that in the 3 and 4 illustrated embodiment. It is noted that the cover of the stator 110 is only in 4 is shown. In the outer area is the stator 110 arranged, over bearing rollers 112 and pole shoes 114 features. Inside the stator 110 is the rotor 120 arranged. Both the stator 110 as well as the rotor 120 have an open segment 118 respectively. 128 on, through which cable or cable strands in the interior of the rotor 120 for wrapping and / or bundling can be introduced. The bearing rollers 112 of the stator 110 allow a rotation about its axis of rotation 112a and thus support the bearing of the rotor 120 during his rotary motion.

6 shows a schematic side view of the directly driven winding head 200 according to another embodiment of the invention. The fundamental difference from the embodiment described above is the closed design of the winding head present here 200 including stator 210 and rotor 220 , It lacks thus the open segments of Stator 210 and rotor 220 , causing cables and harnesses only with their ends laterally into the interior of the rotor 220 can be introduced. As with the open design, the stator includes 210 one in the form of several bearing rollers 212 executed storage. The bearing rollers rotate around their respective axis 212a and thus support the rotational movement of the rotor 220 , Analogous to the open design of the winding head are for generating a torque of the rotor 220 as pole shoes 214 illustrated coils 214 provided with which electromagnetic fields are generated, the exact configuration is carried out according to the requirements of the type of electric motor to be realized. All types of electric motors are suitable which are also suitable for the open design of the directly driven winding head. The pole shoes 214 and the bearing rollers 212 are preferably arranged alternately, so that in the closed design, the number of bearing rollers 212 and pole shoes 214 is identical.

LIST OF REFERENCE NUMBERS

100

Winding head drive (open embodiment)

110

stator

112

bearing roller

112a

Axle of the bearing roller

112b

Contact area of the bearing roller

112c

Recess of the bearing roller

114

Coil (pole piece)

116

Cover of the stator

118

open segment of the stator

120

Rotor (race)

122

permanent magnet

128

open segment of the rotor

200

Winding head drive (closed embodiment)

210

stator

212

bearing roller

212a

Axle of the bearing roller

214

Coil (pole piece)

220

Rotor (race)

300

open winding head with belt drive according to the prior art

310

Static outer ring of the winding head

312

bearing roller

320

Race of the winding head

350

external electric motor (servomotor)

380

drive belts

382

idler pulley

384

idler

400

closed winding head with belt drive according to the prior art

410

Static outer ring of the winding head

420

Race of the winding head

450

external electric motor

480

drive belts

482

idler pulley

484

idler

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

• WO 03/010780 [0003]
• DE 3604509 C2 [0003]

Claims (26)

Winding head drive ( 100 . 200 ) for a winding machine for winding or bundling elongated objects, such as cables and cable strands, with a belt from a supply, characterized in that the winding head drive ( 100 . 200 ) a stator ( 110 . 210 ) and a substantially hollow cylindrical rotor ( 120 . 220 ) having an inner diameter, wherein the rotor ( 120 . 220 ) within a substantially cylindrical interior of the stator ( 110 . 210 ), and wherein the stator ( 110 . 210 ) electromagnetically excitable coils ( 114 . 214 ) and means ( 112 . 212 ) for the storage of the rotor ( 120 . 220 ) having. Winding head drive ( 100 ) according to claim 1, characterized in that stator ( 110 ) and rotor ( 120 ) each in a segment ( 118 . 128 ) of its hollow body are open and preferably the interior of the rotor ( 120 ) is freely configurable with the second inner diameter. Winding head drive ( 100 . 200 ) according to claim 1 or 2, characterized in that the bearing of the stator ( 110 . 210 ) is designed as a roller bearing and bearing rollers ( 112 . 212 ), which preferably between the electromagnetically excitable coil ( 114 . 214 ) are arranged. Winding head drive ( 100 . 200 ) according to one of the preceding claims, characterized in that the electromagnetically excitable coils ( 114 . 214 ) of the stator ( 110 . 210 ) as pole shoes ( 114 . 214 ) are configured. Winding head drive ( 100 . 200 ) according to claim 3 or 4, characterized in that the electromagnetically excitable coils ( 114 . 214 ) and the bearing rollers ( 112 . 212 ) in sections on the inner or outer circumference of the stator ( 110 . 210 ) are arranged alternately or alternately, preferably symmetrically and even-numbered, in particular eight bearing rollers ( 112 . 212 ) intended. Winding head drive ( 200 ) according to one of the preceding claims, characterized in that the stator ( 210 ) and rotor ( 220 ) of the winding head drive ( 200 ) have a closed design. Winding head drive ( 100 . 200 ) according to one of the preceding claims, characterized in that the rotor ( 120 . 220 ) at least one permanent magnet ( 122 ) and / or electromagnetically energizable coils. Winding head drive ( 100 . 200 ) according to one of the preceding claims, characterized in that the rotor ( 120 . 220 ) Permanent magnets ( 122 ), which at the outer radial circumference of the rotor ( 120 . 220 ) are arranged and preferably in the annular core of the rotor ( 120 . 220 ) are embedded or wholly or partially raised on the rotor ( 120 . 220 ) are arranged. Winding head drive ( 100 . 200 ) according to one of claims 3 to 5, characterized in that the bearing rollers ( 112 . 212 ) of the stator ( 110 . 210 ) Recesses ( 112c ) for receiving the rotor ( 120 . 220 ) arranged permanent magnets ( 122 ) exhibit. Winding head drive ( 100 . 200 ) according to one of the preceding claims, characterized in that the stator ( 110 . 210 ) and rotor ( 120 . 220 ) existing electric drive is designed as a servomotor and is preferably controlled either position speed or torque-controlled. Winding head drive ( 100 . 200 ) according to claim 10, characterized in that the winding head drive ( 100 . 200 ) has a sensor unit or angle encoder for reading the angle of rotation and / or the rotational speed. Winding head drive ( 100 . 200 ) according to claim 10 or 11, characterized in that the winding head drive ( 100 . 200 ) has an integrated braking device. Winding head drive ( 100 . 200 ) according to one of claims 1 to 9, characterized in that the stator ( 110 . 210 ) and rotor ( 120 . 220 ) existing electric drive is designed as a stepper motor, synchronous motor or three-phase motor. Winding head drive ( 100 . 200 ) according to one of the preceding claims, characterized in that the electric drive in a range between 100 U / min to 3000 U / min is operable, in particular between 1000 U / min and 2000 U / min, preferably about 1200 U / min as mean number of revolutions is provided. Winding head drive ( 100 . 200 ) according to one of the preceding claims, characterized in that the supply of the strip is designed as a roll of tape, which is preferably in or on the rotor ( 120 . 220 ), wherein further preferably a balance weight is provided. Open segment motor ( 100 ), a stator ( 110 ) having a substantially cylindrical interior and an interior of the stator ( 110 ) arranged rotor ( 120 ), characterized in that the rotor ( 120 ) is substantially hollow cylindrical, and the stator ( 110 ) Electromagnetically excitable coils ( 114 ) and means ( 112 ) for the storage of the rotor ( 120 ), wherein stator ( 110 ) and rotor ( 120 ) each in a segment ( 118 . 128 ) of its hollow body are open. Open segment motor ( 100 ) according to claim 16, characterized in that the bearing of the stator ( 110 ) is designed as a roller bearing and bearing rollers ( 112 ), which preferably between the electromagnetically excitable coil ( 114 ) are arranged. Open segment motor ( 100 ) according to claim 16 or 17, characterized in that the electromagnetically excitable coils ( 114 ) of the stator ( 110 ) as pole shoes ( 114 ) are configured. Open segment motor ( 100 ) according to claim 17 or 18, characterized in that the electromagnetically excitable coils ( 114 ) and the bearing rollers ( 112 ) in sections on the inner or outer circumference of the stator ( 110 ) are arranged alternately or alternately, preferably symmetrically and even-numbered, in particular eight bearing rollers ( 112 ) intended. Open segment motor ( 100 ) according to one of claims 16 to 19, characterized in that the rotor ( 120 ) at least one permanent magnet ( 122 ) and / or electromagnetically energizable coils. Open segment motor ( 100 ) according to one of claims 16 to 20, characterized in that the rotor ( 120 ) Permanent magnets ( 122 ), which at the outer radial circumference of the rotor ( 120 ) are arranged and preferably in the annular core of the rotor ( 120 ) are embedded or wholly or partially raised on the rotor ( 120 ) are arranged. Open segment motor ( 100 ) according to one of claims 17 to 21, characterized in that the bearing rollers ( 112 ) of the stator ( 110 ) Recesses ( 112c ) for receiving the rotor ( 120 ) arranged permanent magnets ( 122 ) exhibit. Open segment motor ( 100 ) according to one of claims 16 to 22, characterized in that the stator ( 110 ) and rotor ( 120 ) existing electric drive is designed as a servomotor and is preferably either position-speed or torque-controlled. Open segment motor ( 100 ) according to claim 23, characterized in that the open segment motor ( 100 ) has a sensor unit or angle encoder for reading the angle of rotation and / or the rotational speed. Open segment motor ( 100 ) according to one of claims 16 to 22, characterized in that the stator ( 110 ) and rotor ( 120 ) existing electric drive is designed as a stepper motor, synchronous motor or three-phase motor. Open segment motor ( 100 ) according to any one of claims 16 to 25, characterized in that the electric drive in a range between 100 U / min to 3000 U / min is operable, in particular between 1000 U / min and 2000 U / min, preferably about 1200 U / min is provided as the average number of revolutions.

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