EP1065304B1 - Play-free and self centering bobbin coupling device for the spindle in a textile machine - Google Patents

Description

The invention relates to a backlash-free and centering sleeve coupling for the Spindle of a textile machine. Such couplings consist of at least three entrainment elements, which are non-positively connected to the spindle shaft connected sleeve receptacle are arranged, the sleeve coupling supported centrally against the inner wall of the sleeve. such Sleeve couplings are used in the textile industry, preferably in spinning and twining.

Sleeve couplings of the generic type have already been developed. For example, DE 41-31 498 A1 describes the sleeve coupling for a spinning or Twisting spindle, in which movable driving bodies are used, which are the result of the centrifugal force against the inner surface of the sleeve. There put a force and / or between the upper part of the spindle and the sleeve positive connection and thus enable the transmission of a Torque. Because of the low mass of the moving parts, they are available centrifugal forces are relatively low, which is why a safe Carrying the sleeves on the upper spindle parts cannot be guaranteed can. In addition, at low speeds the spindles are low Effect of the clutch to record, so that it is particularly when Braking the spindle to slide the sleeve on the upper part of the spindle comes. This affects both the yarn quality and the Wear of the sleeve.

Furthermore, DE 42 17 381 A1 describes a sleeve coupling, which also is designed as a centrifugal clutch. This centrifugal clutch is sicb in an extension of the drive whorl, due to the proportionate low driving forces, a sleeve is provided, which is profiled Has inner surface. The entrainment effect of this solution is thereby reinforced that between the outer diameter of the sleeve coupling and the Inner diameter of the sleeve there is very little dimensional play.

DE 43 18 027 A1 discloses a sleeve coupling which provides for a non-positive connection between the sleeve and the upper part of the spindle by means of driving bodies of different designs. As a result of the centrifugal forces that occur, the entrainment bodies are set in a wobbling movement, as a result of which they become jammed between the upper spindle part and the sleeve. This type of sleeve coupling has the disadvantage that the sleeve is not taken safely centered on the spindle axis. Another disadvantage is that this non-positive clamping connection does not come loose easily when the spindle is at a standstill. Furthermore, it can happen that the driver body itself does not assume a central position with respect to the spindle axis and thus the imbalance is promoted. The mounting holes for the driver body also weaken the stability of the upper spindle part.
Finally, DE 195 37 762 A1 describes a technical solution which is said to be particularly suitable for spinning tubes with lower gamma masses. This requires considerable acceleration when the spindle starts to turn the rotating ring in the ball guide. This solution is not suitable for bridging larger dimensional differences between the inner sleeve diameter and the outer diameter of the sleeve coupling. Since the driving bodies fall down due to their own weight when the spindle is at a standstill, centering of the sleeve can no longer be guaranteed.

The known technical solutions have the common defect that they do not guarantee the centering of the coil sleeve to the spindle axis and the easy removal of the wound cores from the Offer spindle tops. As is known, drawn twist tubes are the result of the winding forces deformed so that there is insufficient play between the inner diameter of the sleeve and the outer diameter of the Sleeve coupling regularly to problems when pulling the sleeve through Tight fit is coming.

It is therefore an object of the invention to address the shortcomings of the known prior art Technology to overcome and a sleeve coupling for spinning or To create twisting spindles, even with larger dimensional differences between the inside diameter of the sleeve used and the outside diameter the sleeve coupling ensures unimpeded function.

In addition, the technical solution is to ensure that a possible Deformation of the sleeve when winding with thread material is not the central one Position of the sleeve relative to the spindle axis and the safe driving of the sleeve the spindle questions. Furthermore, it should be possible that a Sleeve deformation, which is usually when using plastics as Sleeve material and due to high thread forces can not be observed The sleeve is firmly seated on the spindle when the spindle is at a standstill, so that the Sleeve removal easily by hand or by means of sleeve removal devices can be guaranteed. The technical solution to be created should also characterized by simple construction and easy assembly.

According to the invention the task is essentially by characterizing features of claim 1 solved. Then there is one backlash-free and centering sleeve coupling for the spindle one Textile machine consisting of at least three entrainment elements, which in one Sleeve receptacle are arranged centrally and non-positively on the Place the inner wall of the sleeve. For this purpose, the sleeve holder consists of a Base body, a thrust piece axially movable therein and a end piece firmly connected to the base body. The takeaway elements are arranged between the base body and the pressure piece, being are mainly designed to be radially movable. There is a cone on the pressure piece trained federal government arranged, of which with the driving elements in Parts in contact act as guide slopes. Also are mainly radial between the pressure piece and the end piece Slidable locking centrifugal elements arranged. Finally heard for the basic design of the sleeve coupling that at least one of the surfaces in contact with the locking centrifugal elements Thrust piece and the end piece is formed as a guide slope. So the entire sleeve coupling consists exclusively of simple Components that can be manufactured and assembled in a rational manner. she particularly fulfills the objective, if necessary also such coil cores to be able to absorb the deformations due to high thread forces subject to and the use of previously known sleeve couplings Complications with the required removal from the upper part of the spindle can cause.

With the newly developed sleeve coupling, however, any geometric play between the outer circumference of the sleeve coupling and the inner diameter of the unloaded sleeve can be selected, so that not only the manufacture of the sleeve coupling can be almost completely mechanized and automated, but also the trouble-free mechanized or manual insertion and removal as required of the sleeves on the respective textile machine.
The particular advantage of the proposed sleeve coupling is also that the sleeve is centered with respect to the spindle axis even when the respective spindle is at a standstill and thus unbalance with the resulting consequences for the respective spindle and for the sleeve winding can be excluded. For this purpose, the driving elements are used, which are displaced uniformly predominantly radially from the axially movable pressure piece via the guide bevels arranged thereon and, by partially exiting from the receptacles formed on the base body of the sleeve coupling, brace the sleeve covering the coupling against the base body. In the working state of the spindle, at the usual speeds, not only are the entrainment elements pressed outwards against the inner wall of the sleeve as a result of centrifugal forces, but also the arresting centrifugal force elements which are arranged between the pressure piece and the end piece. These reinforce the normal forces acting on the movable pressure piece anyway, as a result of which the radial forces on the driving elements are further increased. At the end of the sleeve winding and spindle standstill, these reinforcing forces are eliminated, so that the respective sleeve can be easily removed from the sleeve coupling, only the forces having to be overcome due to the inherent mass of the pressure piece via the guide bevels arranged thereon on the driving elements.

It is provided that the difference in dimensions between the outer radius of the base body and the outer radius of the central cylindrical part of the pressure piece has at least the size of the diameter of the spherical driving element.
Alternatively, the difference in dimensions between the outer radius of the base body and the outer radius of the central cylindrical part of the pressure piece is at least the total dimension of the spherical part of the driving element with the cap-shaped part of the driving element put on.

This ensures that, if necessary, the driving elements are complete within the outer diameter of the base body of the sleeve coupling can be arranged, which the problem-free mounting of the sleeve on the Sleeve coupling and the removal of it accommodates.

The driving elements are therefore in a special embodiment the invention as balls or as caps in connection with internal Balls formed. In the latter variant, the Possibility of two-dimensional contacts between the sleeve coupling and the To produce the inner wall of the sleeve and thus possibly avoiding it from local deformations of the sleeve, greater driving forces on the sleeve to be able to transmit.

The cap-shaped part of the driving element is preferably equipped with a stop collar, with the aid of which the cap can be prevented from completely escaping from the base body of the sleeve coupling. The receptacles for the driving elements are arranged radially in the base body and can be used as a cylindrical bore if balls are used as driving elements or as a combination of cap-shaped parts and balls - the balls partially enclosed as a breakthrough with almost any cross section, for example, a prismatic cross section.
To prevent the balls from escaping as exclusive entrainment elements, the cylindrical bores are formed with an outer dome-shaped narrowing in the base body.

While on the pressure piece for the purpose of radial emergence of the Driving elements from the base body in each embodiment of the Invention is arranged a guide slope, the arrangement of Guide bevels for the locking centrifugal force elements, which are between the pressure piece and the end piece are, if necessary, on a Limit guide slope. In this case, the runways for designed as cylindrical rollers or balls locking Centrifugal force elements are either anchored to the base body End piece or on the pressure piece inclinations against the horizontal. The basic difference between the leadership slope for the Driving elements and the bevels for the locking Centrifugal force elements consist in that on the pressure piece for the displacement of the driving elements arranged guide slope extended to the outside is trained.

In contrast, the guide slopes of the guideways are for the locking ones Centrifugal force elements extended inwards. All leadership slopes can however have selectable inclinations against the horizontal. In order to can be designed to meet the different requirements, which result from the specific speed, the actual thread tension and the Material properties of the bobbin tube result. With the choice of inclinations The guiding slopes are determined on the one hand by the force effect with which axial loading of the thrust piece against the driving elements Inner wall of the coil sleeve are pressed. On the other hand, with the choice the inclinations of the guide slopes in the tracks for the locking Centrifugal force determines the force that under centrifugal force locking flow force in the axial direction exerts on the pressure piece. In a special embodiment, the selectable angle is Guide slope for the driving elements on the pressure piece preferably 40 ° against the horizontal.

The guide bevels arranged in the guideways for the locking centrifugal force elements, on the other hand, have a selectable angle, preferably 10 ° to the horizontal.
For the uniform guidance of the pressure piece during the axial displacement downward by the locking centrifugal force elements, it is sufficient if at least three radially arranged guideways are formed between the end piece and the pressure piece.
However, the number of guideways can also be increased to increase the force acting on the axially displaceable thrust piece as a result of larger overall masses of the locking centrifugal force elements.

A further embodiment of the invention provides for the pressure piece to be provided with a sliding bush which ensures the easy axial displacement of the pressure piece on the spindle shaft.
Because of the relative inaccessibility of the installed sleeve couplings and in particular this slide bush, a plastic bush, for example made of PTFE, is preferably chosen for the formation of this slide bush.

Overall, the sleeve coupling is designed so that it predominantly Contains individual elements that are manufactured in automatic manufacturing steps can be. The proposed solution also stands out characterized in that the assembly of the developed sleeve coupling also can be done predominantly automatically.

For this purpose there is a mounting collar on the base body for fixing the end piece the seat of the end piece arranged in the base body.

There is also provision for a between the base body and the end piece after the assembly of the sleeve coupling to be produced positive Form connection, for example by means of a deforming Pressing process.

It can be advantageous to have a between the end piece and the pressure piece securing the lowest possible position of the pressure piece in the base body Arrange compression spring. This ensures that in addition to the net weight of the pressure piece another force component already when the spindle is at a standstill Driving elements press against the inner wall of the spindle sleeve and thus centering of the spindle sleeve on the spindle shaft is guaranteed. This can be meaningful for the spindle start while avoiding imbalance his. The defined driving force also supports the use of Placement and removal mechanisms on the respective textile machine.

Another special embodiment of the sleeve coupling is thereby characterized in that in the plane of passage of the driving elements the base body on the outer circumference of the base body an elastic band is arranged. This tape covers the recordings for the take-along elements and leads to the fact that the driving elements in the respective starting position are held back. The is through the Pressure piece and possibly caused by the compression spring used Radial force on the driving elements overcome, so that the plugging or removing the coil sleeves on the respective spindle shaft is facilitated.

For non-positive fastening of the individual sleeve coupling on Spindle shafts are threaded holes on the base body. to Prevention of unbalance is preferred at least for each sleeve coupling two opposite bores with corresponding locking screws used.

It is normally sufficient if the coil sleeve is fixed in place on the respective spindle shaft a clamping piece and at least one of the proposed sleeve couplings are arranged.

When using longer bobbin tubes or when using bobbin tubes, the could deform to a greater extent as a result of high thread tensions, can be used for the frictional and central fixation of the respective Spool sleeve on the spindle shaft also two or more sleeve couplings to be ordered.

The advantages of the proposed technical solution exist summarized in the fact that a sleeve coupling is now available with which will surely overcome the shortcomings of the known prior art. As a result of its design from easily producible individual elements, the Sleeve coupling can be manufactured efficiently. In particular, it ensures that easy assembly and clearing of the respective spindle, what the use of appropriate mechanisms on each Textile machine accommodates. Through the variable use of the This sleeve coupling can not only be used for a wide variety of materials used coil sleeves but also for a wide variety of geometries Bobbin sleeves and for any thread tension can be used. The decisive advantage is that the game between the Inner diameter of the coil sleeve and the outer diameter of the Sleeve coupling can be chosen practically to a large extent without at the same time eccentricities and thus in particular mechanically stressful To have to accept unbalance when running the spindle.

The invention will be explained in more detail below with exemplary embodiments become.

Fig. 1

den schematischen Längsschnitt einer Hülsenkupplung im Ruheund im Arbeitszustand mit zwölf kugelförmigen arretierenden Fliehkraftelementen und mit sieben kugelförmigen Mitnahmeelementen;

Fig. 2

die schematische Schnittdarstellung in der Schnittebene A-A der Fig. 1;

Fig 3

die schematische Schnittdarstellung in der Schnittebene B-B der Fig. 1;

Fig. 4

den schematischen Längsschnitt einer Hülsenkupplung im Ruheund im Arbeitszustand mit zwölf kugelförmigen arretierenden Fliehkraftelementen und mit acht Mitnahmeelementen, jeweils bestehend aus kappenförmigen und kugelförmigen Teilen des jeweiligen Mitnahmeelementes;

Fig. 5

die schematische Schnittdarstellung in der Schnittebene C-C der Fig. 4;

Fig. 6

den schematischen Längsschnitt eines Spindelschaftes mit aufgesetztem Klemmstück und insgesamt zwei versetzt angeordneten Hülsenkupplungen;

Fig. 7

den schematischen Längsschnitt einer Hülsenkupplung im Ruheund im Arbeitszustand mit sechs walzenförmigen arretierenden Flichkraftelementen und mit sieben kugelförmigen Mitnahmeelementen;

Fig. 8

die schematische Schnittdarstellung in der Schnittebene D-D der Fig. 7;

Fig. 9

die schematische Schnittdarstellung in der Schnittebene E-E der Fig. 7;

Fig. 10

den schematischen Längsschnitt einer Hülsenkupplung im Ruheund im Arbeitszustand mit sechs walzenförmigen arretierenden Fliehkraftelementen und mit acht Mitnahmeelementen, jeweils bestehend aus kappenförmigen und kugelförmigen Teilen des jeweiligen Mitnahmeelementes;

Fig. 11

die schematische Schnittdarstellung in der Schnittebene F-F der Fig. 10;

Fig. 12

den schematischen Längsschnitt einer Hülsenkupplung im Ruheund im Arbeitszustand mit sechs walzenförmigen arretierenden Fliehkraftelementen und mit vier kugelförmigen Mitnahmeelementen, die durch ein elastisches Band am Umfang des Grundkörpers abgedeckt sind;

Fig. 13

den schematischen Längsschnitt einer Hülsenkupplung im Ruheund im Arbeitszustand mit zwölf kugelförmigen arretierenden Fliehkraftelementen und mit vier Mitnahmeelementen, jeweils bestehend aus kappenförmigen und kugelförmigen Teilen des jeweiligen Mitnahmeelementes, ergänzt durch eine Druckfeder zwischen Druckstück und Endstück.

The attached drawing shows:

Fig. 1

the schematic longitudinal section of a sleeve coupling at rest and in the working state with twelve spherical locking centrifugal force elements and with seven spherical driving elements;

Fig. 2

the schematic sectional view in the section plane AA of Fig. 1;

Fig. 3

the schematic sectional view in the sectional plane BB of Fig. 1;

Fig. 4

the schematic longitudinal section of a sleeve coupling in the rest and in the working state with twelve spherical locking centrifugal force elements and with eight driving elements, each consisting of cap-shaped and spherical parts of the respective driving element;

Fig. 5

the schematic sectional view in the sectional plane CC of Fig. 4;

Fig. 6

the schematic longitudinal section of a spindle shaft with attached clamping piece and a total of two staggered sleeve couplings;

Fig. 7

the schematic longitudinal section of a sleeve coupling in the rest and in the working state with six roller-shaped locking force elements and with seven spherical driving elements;

Fig. 8

the schematic sectional view in the section plane DD of Fig. 7;

Fig. 9

the schematic sectional view in the sectional plane EE of Fig. 7;

Fig. 10

the schematic longitudinal section of a sleeve coupling in the rest and in the working state with six roller-shaped locking centrifugal force elements and with eight driving elements, each consisting of cap-shaped and spherical parts of the respective driving element;

Fig. 11

the schematic sectional view in the section plane FF of Fig. 10;

Fig. 12

the schematic longitudinal section of a sleeve coupling at rest and in the working state with six cylindrical arresting centrifugal force elements and with four spherical entrainment elements which are covered by an elastic band on the circumference of the base body;

Fig. 13

the schematic longitudinal section of a sleeve coupling in the rest and in the working state with twelve spherical locking centrifugal force elements and with four driving elements, each consisting of cap-shaped and spherical parts of the respective driving element, supplemented by a compression spring between the pressure piece and the end piece.

embodiments Example 1:

1 to 3 and Fig. 6, a sleeve coupling consists of a base body 1, an end piece 2 and a pressure piece 3. In the pressure piece 3, a sliding bush 4 is arranged so that a sliding and positive connection to the spindle shaft 10 is ensured. The main body 1 is equipped with 2 threaded bores 21, by means of which grub screws are used to ensure the non-positive fixing of the sleeve coupling to the spindle shaft. The base body 1 has seven receptacles 15 for the spherical driving elements 6. These receptacles 15 are designed as cylindrical bores with outer dome-shaped constrictions. After inserting the driving elements 6 into the receptacles 15, the pressure piece 3 is inserted into the base body 1 such that the guide bevel 7, which is designed as a conical collar on the pressure piece 3, is in contact with the driving elements 6. The upper end of the pressure piece 3 contains 12 guideways 20 which are designed as guide bevels 8 for the spherical locking centrifugal force elements 5. The sliding bush 4 is guided up to a height that it acts as an inner stop for the locking centrifugal force elements 5 used.
When assembling the sleeve coupling, after inserting the locking centrifugal force elements 5, the end piece 2 is placed, which also has twelve guideways 20 with the corresponding guide bevel 9. The end piece 2 is seated on the mounting collar 17 of the base body 1 and is non-positively fixed to the base body 1 at the end of the assembly with the positive connection 18.

On the spindle shaft 10 in addition to the clamping piece 12, a total of two sleeve couplings are arranged in such a way that the coil sleeve 11 is supported at the lower end by the clamping piece 12 and both in the middle and at the upper end by a sleeve coupling in each case.
With the vertical placement and fixing of the sleeve coupling on the spindle shaft 10, the driving elements 6 are radially outward into the receptacles 15 under the action of the gravity of the movable pressure piece 3 through the guide bevel 7, which is designed with an inclination of approximately 40 ° with respect to the horizontal displaced for the driving elements 6 in the base body 1. The driving elements 6 come out of the circumference of the base body 1 and must be pressed into the base body 1 when the coil sleeve 11 is placed on it. Because of the positive guidance of the pressure piece 3 on the spindle shaft 10, the spindle sleeve 11 is automatically centered on the axis of the spindle shaft 10 when the spindle is at a standstill. The guide bevels 8 and 9 for the locking centrifugal force elements 5 in the guideways 20 on the pressure piece and on the end piece 2 have inclinations of about 10 ° to the horizontal. The guide bevel 8 for the locking centrifugal force elements 5 on the pressure piece 3 is designed so that in the idle state the locking centrifugal force elements 5 in the guideway 20 assume the position closest to the spindle axis. Thus, the pressure piece 3 can be moved upward towards the end piece 2 if necessary. In the working state, this is no longer possible because the locking centrifugal force elements 5 are thrown outwards in the respective guideway 20 and thus not only prevent the displacement of the pressure piece 3 towards the end piece 2 but also exert an axial force on the pressure piece 3 which is directed below. This causes an additional radial force component on the driving elements 6 and thus the secure frictional connection between the sleeve coupling and the coil sleeve 11.

Example 2:

4 and 5, a sleeve coupling consists of those in Example 1 mentioned individual components. However, instead of seven are spherical Driving elements 6 a total of eight cylindrical receptacles 15 in Base body 1 executed, in which the cap-shaped parts 14 of the Driving elements 6 are displaceable. In these cap-shaped parts 14 are spherical parts 13 of the driving elements 6 embedded in turn with the guide slope 7 for the driving elements 6 on Pressure piece 3 are connected.

The cap-shaped parts 14 of the driving elements 6 each have one Stop collar 16, the complete emergence of the driving element 6th prevented from the base body 1. This embodiment of the Driving elements 6 is preferably used for coil sleeves 11, one flat attack of the driving elements 6 on the inner wall of the coil sleeve 11 to avoid local deformation.

Example 3:

7 to 9 is a sleeve coupling analogous to embodiment 1 designed. However, here are the six guideways 20 for the locking centrifugal force elements 5 prismatic, the locking centrifugal force elements 5 themselves used as cylindrical rollers become.

Example 4:

10 and 11, the sleeve coupling is opposite Embodiment in Example 3 modified so that the Driving elements 6 as in embodiment 2 are formed.

Example 5:

According to FIG. 12, a sleeve coupling is basically similar to that in Embodiment 1 designed sleeve coupling. Indeed are only four spherical driver elements 6 in this example provided, the receptacles 15 for the driving elements 6 in Base body 1 by an inserted into the periphery of the base body 1 elastic band 22 are covered. This embodiment of the Sleeve coupling is preferred when, on the one hand, the engagement the driving elements 6 in the coil sleeve 11 when the spindle is at a standstill should be canceled and on the other hand by interposing the Tape material between driving element 6 and spool sleeve 11 gentle force attack is to be achieved.

Example 6:

13 is that described in embodiment 2 Modified sleeve coupling so that both the end piece 2 and that Pressure piece 3 each have an additional stop collar, between which a compression spring 19 is arranged. This compression spring 19th causes such an axial force on the Pressure piece 3 is exercised, with the help of the driving elements 6 a Safe centering effect on the one hand and sufficient adhesion between sleeve coupling and coil sleeve 11 on the other hand when the spindle starts is effected, but a slight insertion and removal of the sleeve is possible.

LIST OF REFERENCE NUMBERS

1

body

2

tail

3

Pressure piece

4

bush

5

locking centrifugal elements

6

driving elements

7

Guide slope for the driving elements on the pressure piece

8th

Guide bevel for the locking centrifugal force elements on the pressure piece

9

Guide bevel for the locking centrifugal force elements on the end piece

10

spindle shaft

11

bobbin

12

clamp

13

spherical part of the driving element

14

cap-shaped part of the driving element

15

Holder for the driving elements in the basic body

16

Stop collar on the cap-shaped driving element

17

Mounting collar for the seat of the end piece in the base body

18

positive-locking connection

19

compression spring

20

guideways

21

threaded hole

22

elastic band

Claims (20)

1. Backlash-free and centring sleeve coupling for the spindle of a textile machine, consisting of at least three driving elements which are arranged in a sleeve receptacle, frictionally connected to the spindle shank, such as to bear concentrically against the inner wall of the sleeve, characterized in that the sleeve receptacle consists of a basic body (1), a pressure piece (3) arranged therein in an axially movable manner, and an end piece (2) firmly connected to the basic body, in that the driving elements (6) are designed as driving elements (6) which are arranged in a mainly radially movable manner between the basic body (1) and the pressure piece (3), in that guide bevels (7) which are in contact with the driving elements (6) are arranged on the pressure piece (3) in the form of a collar of conical design, in that mainly radially displaceable, locking centrifugal elements (5) are arranged between the pressure piece (3) and the end piece (2), and in that at least one of the surfaces of the pressure piece (3) and of the end piece (2) which are in contact with the locking centrifugal elements (5) is designed as a guide bevel (8, 9).
2. Backlash-free and centring sleeve coupling according to Claim 1, characterized in that the difference in the dimensions between the outer radius of the basic body (1) and the outer radius of the centre cylindrical part of the pressure piece (3) is at least the size of the diameter of the spherical driving element (6).
3. Backlash-free and centring sleeve coupling according to Claim 1, characterized in that the difference in the dimensions between the outer radius of the basic body (1) and the outer radius of the centre cylindrical part of the pressure piece (3) is at least the size of the overall dimension of the spherical part (13) of the driving element (6) with the mounted cap-shaped part (14) of the driving element (6).
4. Backlash-free and centring sleeve coupling according to one of Claims 1 to 3, characterized in that the driving elements (6) are of spherical design (13) or are designed as caps (14) in combination with inner balls (13).
5. Backlash-free and centring sleeve coupling according to one of Claims 1 to 4, characterized in that the cap-shaped part (14) of the driving element (6) is provided with a stop collar (16).
6. Backlash-free and centring sleeve coupling according to one of Claims 1 to 5, characterized in that the receptacles (15) are arranged radially in the basic body (1).
7. Backlash-free and centring sleeve coupling according to one of Claims 1 to 6, characterized in that the receptacles (15) for the driving elements (6) in the basic body (1) are designed as a cylindrical bore, as a prismatic aperture or as a cylindrical bore with an outer cup-shaped constriction.
8. Backlash-free and centring sleeve coupling according to one of Claims 1 to 7, characterized in that the guide tracks (20) for the locking centrifugal elements (5) and that part of the pressure piece (3) which is in contact with the driving elements (6) have guide bevels (7, 8 and 9) with selectable inclinations relative to the horizontal.
9. Backlash-free and centring sleeve coupling according to Claim 8, characterized in that the guide bevel (7) for the driving elements (6) on the pressure piece (3) has a selectable angle, preferably of 40°, relative to the horizontal.
10. Backlash-free and centring sleeve coupling according to Claim 8, characterized in that the guide bevels (8) on the pressure piece (3) and the guide bevels (9) on the end piece (2) in each case have a selectable angle, preferably of 10°, relative to the horizontal.
11. Backlash-free and centring sleeve coupling according to one of Claims 1 to 10, characterized in that the locking centrifugal elements (5) fixing the movable pressure piece (3) in the working position are of spherical design or are designed as cylindrical rollers.
12. Backlash-free and centring sleeve coupling according to one of Claims 1 to 11, characterized in that at least three radially arranged guide tracks (20) are formed between pressure piece (3) and end piece (2) for the locking centrifugal elements (5) arranged between end piece (2) and pressure piece (3).
13. Backlash-free and centring sleeve coupling according to one of Claims 1 to 12, characterized in that the pressure piece (3) is provided with a sliding bush (4) which ensures the axial displaceability of the pressure piece (3) on the spindle shank (10).
14. Backlash-free and centring sleeve coupling according to one of Claims 1 to 13, characterized in that a mounting collar (17) for the seat of the end piece (2) in the basic body (1) is arranged on the basic body (1) for fixing the end piece (2).
15. Backlash-free and centring sleeve coupling according to one of Claims 1 to 14, characterized in that a positive-locking connection (18) to be produced after assembly of the sleeve coupling is formed between the basic body (1) and the end piece (2).
16. Backlash-free and centring sleeve coupling according to one of Claims 1 to 15, characterized in that a compression spring (19) ensuring the deepest possible position of the pressure piece (3) in the basic body (1) in each case is arranged between the end piece (2) and the pressure piece (3).
17. Backlash-free and centring sleeve coupling according to one of Claims 1 to 16, characterized in that an elastic band (22) is arranged on the outer circumference of the basic body (1) such as to cover the receptacles (15) for the driving elements (6) and to retain the driving elements (6) in the initial position when the spindle is stopped.
18. Backlash-free and centring sleeve coupling according to one of Claims 1 to 17, characterized in that tapped holes (21) serving to frictionally fix the sleeve coupling to the spindle shank (10) are arranged on the basic body (1).
19. Backlash-free and centring sleeve coupling according to one of Claims 1 to 18, characterized in that at least one clamping piece (12) and at least one sleeve coupling are arranged for the frictional and central fixing of the bobbin sleeve (11) to the spindle shank (10).
20. Backlash-free and centring sleeve coupling according to one of Claims 1 to 18, characterized in that at least two sleeve couplings are arranged for the frictional and central fixing of the bobbin sleeve (11) to the spindle shank (10).

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