JPH0835133A - Supporting device of spindle - Google Patents

Abstract

PURPOSE: To provide the subject supporting device for a spindle readily fittable to a bearing of a different shaft length or a different size and suitable even for supporting a shaft rotating at the critical number of revolutions or above. CONSTITUTION: This supporting device for a spindle comprises a sliding bearing for receiving a shaft lower end of the spindle, i.e., a basic sliding bearing 21 and a rolling bearing for receiving a spindle neck part, i.e., a neck bearing 11 and both the bearings 21 and 11 are housed in separated two ranges of the supporting device. The basic bearing range is composed as a complete structural unit 20 closed for the outside. The structural unit 20 is provided with a radial bearing 22 composed as a sliding bearing bush and the basic bearing 21 formed from an axial bearing 23 and further a buffer 28 comprising spring elements 29 and 30 acting in the radial direction as an elastic supporting device and an aligning device for the basic bearing 21 and at least one element formed into a spiral shape. The basic bearing 21 is preferably provided at a height and a position for enabling the optimal elastic supporting, aligning and buffering of the basic bearing 21 in relation to the spring elements 29 and 30 and the buffer 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a slide bearing or base bearing for receiving the lower end of the spindle shaft and a rolling bearing or neck bearing for receiving the spindle neck, the neck and base bearings being the supporting device. A support device for a spindle, in particular a spinning, twisting or rewinding spindle, which is housed in two separate areas.

[0002]

2. Description of the Related Art In a conventional spindle support device, a neck bearing and a base bearing are generally connected to each other via a guide tube. Thus, the neck bearing and the base bearing are combined into one unit. Therefore, for spindles with different axial lengths or bearings of the same axial length but different sizes,
Complete support devices must be provided that differ for each axis length.
German Patent No. 2310323 describes
There has already been proposed a spindle support device in which a neck bearing and a base bearing are provided in two areas which are axially separated from each other. However, in this known support device, the area for the base bearing consists of a plurality of individual parts which are inserted back and forth into the housing. This is very costly for precise centering of the base bearing part and alignment to the neck bearing.

[0003]

SUMMARY OF THE INVENTION The problem underlying the present invention is, therefore, to be easily adapted to bearings of different shaft lengths or sizes and to prevent the above-mentioned disadvantages and to rotate above the critical speed. An object of the present invention is to provide a variable support device for supporting which is suitable for supporting other shafts and the like.

[0004]

According to the invention, in order to solve this problem, the base bearing area is constructed as a complete structural unit closed to the outside and, in addition to the base bearing, at least the base bearing. It has elements that perform elastic support, centering and cushioning functions.

[0005]

Thus, the discrete individual parts no longer exist. This allows a simple and problem-free assembly. Important functional elements of the support device are no longer changed by the assembly. The entire structural unit is therefore produced as one quality element to be tested. This structural unit can then be combined with a neck bearing of different size and bearing spacing into one complete spindle support. Thus, due to the unit system principle, the same unit for the base bearing can be used to construct various spindle supports. The structural unit is formed in at least a substantially cylindrical shape and has, in addition to the base bearing, elements that perform the elastic support, centering and cushioning functions of the base bearing, so it is the simplest structure. All functions can be combined into one structural part.

At least one spring element acting in the radial direction may be provided in the structural unit as an elastic support device and a centering device. The damping device of the structural unit is formed, for example, of at least one spirally wound leaf spring, during which the buffer medium, in particular oil or grease, is present. Two radially acting spring elements can be provided above and below the shock absorber. By optimizing the position of the base bearing with respect to the shock absorber, taking into account the effect of the force on the spring element acting in the radial direction, an ideal force introduction point of the base bearing on the shock absorber and the elastic support device is set can do. The optimal use of the shock absorber thereby allows the shock absorber to be relatively small. This configuration of the base bearing structural unit prevents tilting moments so that the base bearing and shaft lower end remain parallel to each other during operation.
This avoids the danger of tilting between the lower shaft end and the base bearing, which is present in conventional support devices. However, a radially acting spring element can also be provided between the two shock absorbers. In this case, with respect to the spring element and the damping device, the base bearing can be provided in a height position which allows optimum elastic support, centering and damping of the base bearing. The at least one spring element and the at least one shock absorber are then provided
It is advantageous if the structural units are spaced apart from one another in the axial direction. In this way, the mutual influence of the spring action and the cushioning action is prevented. At least one damping device and at least one spring element can be provided between the inner tube and the outer tube forming the radially outer closure of the structural unit. Furthermore, a device for limiting the deflection stroke of the at least one spring element, which is preferably designed as a spiral spring, is provided to prevent permanent deformation of the spring element. Very high centering accuracy is obtained, for example, by using a spiral spring element that can be manufactured as a stamped part. If two spring elements are provided above and below the damping device respectively, these spring elements can have different natural frequencies in order to minimize dynamic interaction.
At least one shock absorber can be fixed axially within the structural unit by means of projections, protrusions or the like on the inner or outer tube. Thereby, the structural unit can be inserted into the bearing housing, or the outer tube can simultaneously form the lower part of the bearing housing. In this case, the base bearing is preferably provided in the shock absorber and is formed, for example, by a radial bearing and an axial bearing. The axial bearing may be a disk. Furthermore, an oil flow opening can be provided in the axial bearing.

For the elements of the structural unit which are movable in the axial direction, axially acting stoppers and shock absorbers can be provided. This minimizes axial vibration,
Noise is reduced. Damping of the axial movement is effected, for example, by at least two clearance disks with a narrow oil clearance. The inner tube can also have a through hole to improve oil flow.

By the insert that supports the base bearing from below,
The structural unit can be closed to the bottom. A space can then be provided around the insert, which serves as a sump. In order to reduce the axial base bearing load of the insert, the insert can be provided in the structural unit from below to cushion against impact. The insert can also form the bottom of the bearing housing at the same time.

The neck bearing can also be provided in a structural unit which is closed to the outside and the structural unit can be provided with a flange for incorporation into the spinning machine. In such a configuration of the support device, the structural unit for the neck bearing and the structural unit for the base bearing can be connected to each other via spacing pieces of different lengths,
It is possible to use the same base and neck bearing units for different length spindles. Furthermore, when assembling the cervical bearing into complete structural units, it is also possible to assemble these structural units separately into the machine without having to directly bond the basic and cervical bearing structural units to one another. In this case, the neck bearing structural unit has a substantially cylindrical cylinder head, and its inner wall can form a rolling surface for a rolling element of the neck bearing. Therefore, in this case, the ring made of a hardened material conventionally used as a rolling surface for rolling elements is not necessary. However, this means that with the same neck bearing, the diameter of the barrel head can be reduced by as much as twice the wall thickness of the annulus, as compared to previously known spindle supports. This also allows for a reduction in the worm diameter, thereby enabling a higher spindle speed at the same belt speed or the same spindle speed at a lower belt speed, thus reducing the energy consumption as compared to known spindle supports. . The elimination of the separate annulus as the rolling surface for the rolling elements necessitates a precise cylindrical configuration of the inner surface of the barrel head and manufacture from a material that is hardened at least in the rolling range of the rolling element
Overall, the manufacture of the support device is simplified. because,
This is because it is no longer necessary to prepare the two parts, the ring and the cylinder, and to match their dimensions. Furthermore, the elimination of other manufacturing parts simplifies and facilitates the assembly of the spindle support device. The structural unit for the base bearing can also be oil-tightly closed to the outside. Thus, a shaft or the like that rotates at a high speed can be supported. If a spindle support device is used to protect the base bearing structural unit from damage due to the eccentric introduction of the spindle shaft, an auxiliary shaft introduction device can be provided. With this device, the shaft is guided when the base bearing structural unit is introduced into the hole of the inner tube.
Fixing on the end face is avoided. The device can be packaged into a neck bearing structural unit or a base bearing structural unit. Therefore, for example, the hole of the neck bearing structural unit can be reduced. The reduction in diameter is limited to the partial extent of the bore in the axial direction and should be limited to the end facing towards the base bearing structural unit. For example, the inner tube or the outer tube is formed in a funnel shape,
A funnel-like member can be provided. In the case of eccentric insertion, the shaft is guided to the correct position by the funnel profile.

According to the invention, a method for manufacturing a support device for a spindle, in particular for spinning, twisting or rewinding spindles, comprises press-fitting a base bearing into an inner tube provided with at least one damping device, followed by an inner tube and an outer tube. And are coupled by at least one spring element acting in the radial direction. The outer tube and the inner tube can be glued, crimped, clipped or welded to the at least one spring element acting in the radial direction. The base bearing can be pressed, glued, clipped or crimped into the inner tube. However, the inner tube can also be pressed around the base bearing. In the pressing process, the bore of the base bearing can be calibrated with the support mandrel required for this. The outer tube is made by winding a metal plate and can have a cross section that is suitably different from the circular shape to offset tolerances to the housing. Further, at least the outer tube, the inner tube, and the shock absorber can be integrally formed. For this purpose, the end of the shock absorber to be wound can be closed by the next inner or next outer wall, for example by pinching or welding. The innermost or outer winding of the shock absorber thus stabilized forms the inner or outer tube. At the same time, the radial bearing can be fixed by cutting the inner tube. The cuts in the end faces can receive and fix radially acting spring elements. However, the inner tube, outer tube, shock absorber and base bearing can also be constructed as an integral plastic part.

The outer tube can also assume the function of a housing. The wall thickness of the outer tube is thereby increased and the axial length is extended towards the cervical bearing structural unit.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a spindle support device according to the present invention will be described below with reference to the drawings. Figure 1 (A)
Indicates a neck bearing structural unit having a neck bearing as a rolling bearing that accepts a spindle neck. The neck bearing 11 is a cage 12 and a cylindrical rolling element 1 provided therein.
Has 3 and 3. The neck bearing 11 is press-fitted into a cylinder head 14 having a notched press-fit area 15 at the lower end and a stopper 16 for insertion into a bearing housing 17 shown in FIG. The rolling element 13 of the neck bearing 11 directly rolls on the inner surface of the hardened cylinder head 14. The neck bearing structure unit 10 having different lengths of the cylinder head 14 is manufactured to produce the housing 17
Structural unit 20 shown in (B) for base bearing with (FIG. 4)
Can be combined with a spindle support device.
The structural unit 20 has a base bearing 21 formed from a radial bearing 22 and an axial bearing 23 configured as a sliding bearing bush. In the illustrated example, the axial bearing 23 is loosely inserted into the structural unit 20.
The connection between the radial bearing 22 and the inner tube 24 is performed by, for example, crimping,
It can be done by pressing, gluing, clipping or welding. Pressing between the radial bearing and the inner pipe is also possible. In this case, the supporting mandrel, which is movable for the pressing process, also serves as a calibrator for the bearing bore 25. The structural unit 20 is closed to the outside by an outer tube 26 and closed below by a plug-like insert 27. The insert 27 has an inwardly projecting ram-shaped projection 27.1, which supports the axial bearing 23 from below. Projection 27.
A space 33 is formed between 1 and the inner tube 24 and is filled with oil. The axial bearing 23 can have an opening that allows oil to flow. Between the inner tube 24 and the outer tube 26,
A shock absorber 28 in the form of a spiral element is provided, between the windings of which oil or grease is present. Above and below the shock absorber 28, spiral springs 29 and 30 shown in detail in FIG.
A radially acting spring element of the form is provided.
The spiral springs 29 and 30 are separated from the shock absorber 28 by the spacing members 31 and 32 and are separated from the spiral springs 29 and 3.
The spring characteristic of 0 is affected by the shock absorber 28, and conversely, the shock absorber 28 is prevented from being affected by the spiral springs 29 and 30. The spring elements 29, 30 are the inner tube 24 and the outer tube 26.
Is joined to.

FIG. 2 is an enlarged view of the range indicated by the broken line circle in FIG. A spiral spring 29 whose winding is shown in a plan view in FIG. 3 is fixedly connected to the inner tube 24 and the outer tube 26. In addition to the radial elastic support of the base bearing 21, the spiral spring 29 also takes care of the centering of this base bearing, ensuring the vertical orientation of the spindle and the coaxiality of the base and neck bearings.

FIG. 4 shows a cervical bearing structural unit 10 and a base bearing structural unit 20 of the support device according to FIG. 1, wherein both structural units are inserted in a common bearing housing 17. The housing 17 is surrounded by a flange 18, which allows the entire device to be incorporated into the machine.
The outer tube 26 of the base bearing structural unit 20 is in close contact with the inner wall of the housing 17. As a result, the outer tube 26 has a cross section that is different from the circular shape, and in some cases, the housing 17
And the outer diameter of the outer tube 26 cancels out and ensures a secure retention of the base bearing structural unit 20 in the housing 17.

FIG. 5 shows another configuration of the base bearing structural unit 20 ', wherein an outer tube 26' is formed in a thick wall and extends toward the neck bearing structural unit. As a result, the outer tube 26 '
At the same time, it also serves as a housing. Here insert 2
7 'is also integrally formed with the outer tube 26'. 1 and 4
Unlike the base bearing structural unit 20 shown in FIG. 2, this construction of the base bearing structural unit 20 'no longer requires a separate housing 17.

6 shows an integral construction of the inner tube 24 ", the outer tube 26" and the shock absorber 28 ". These three elements are formed by a single winding 50 as shown in FIG. The winding body 50 has its end regions 50.1 and 50.
2 is slightly wider. End region 50.1 forms the innermost turn, which is closed by the weld, and thus forms inner tube 24 ".
The outermost turn from 2 is formed and likewise closed to form an outer tube 26 ". The turns therebetween are open and form a shock absorber 28". Edge range 50.
1 is further provided with a notch 53 by means of which the base bearing 21 "can be fixed to the inner pipe 24".

FIGS. 8 to 10 show a spindle support device having an auxiliary device for introducing a spindle shaft to prevent damage to a base bearing when the spindle is inserted into the support device. In FIG. 8, this introduction aid in the neck bearing structural unit 10 'is configured in the form of a small inner diameter region 10.1'. In Figures 9 or 10, the introduction aids are grouped into a base bearing structural unit 120 or 120 ', respectively. The structural unit 120 according to FIG.
Has a funnel-shaped extension 124.1 at its upper end. Contrary to this, in FIG. 10, a funnel-shaped region 126.1 is formed integrally with the outer tube 126.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along an axis of a neck bearing structural unit and a base bearing structural vehicle before assembly of a spindle support device according to the present invention.

FIG. 2 is an enlarged view of a portion surrounded by a broken line circle in FIG.

FIG. 3 is a plan view of a spiral spring of the base bearing structural unit according to FIG. 1;

FIG. 4 is a cross-sectional view through the axis of the base bearing structural unit and the neck bearing structural unit inserted into the bearing housing.

FIG. 5 is a sectional view through the axis of a second embodiment of the base bearing structure unit.

FIG. 6 is a schematic perspective view of a winding body in which an inner tube, an outer tube, and a shock absorber are integrated.

7 is a development view of the winding body according to FIG.

FIG. 8 shows a first example of a spindle supporting device having an introduction assisting device.
It is sectional drawing which passes along the axis of an Example.

FIG. 9 shows a second example of the spindle support device having the introduction assist device.
It is sectional drawing which passes along the axis of an Example.

FIG. 10 is a sectional view through an axis of a third embodiment of a spindle support device having an introduction assist device.

[Explanation of symbols]

 Reference Signs List 10 neck bearing structural unit 11 neck bearing 20 base bearing structural unit 21 base bearing 28 element (buffer) 29 element (elastic support device) 30 element (centering device)

Front page continuation (72) Inventor Martein Engrer, Federal Republic of Germany Schuttuttgart Taubenheim Schutlerse 18 (72) Inventor Hans-Peter Fuerstel, Federal Republic of Germany Beattieschheim-Witzsingen Hindenburg Schutlerse 32 (72) Inventor Klaus Hof Schyutettel, German Republic of Germany Hotzhodolf Krumel-Vuek 4 (72) Inventor Ulrich Outt, German Federal Republic of Germany Schuttuttgart Brukhelen Schutlerse 8 (72) ) Inventor Martein Seiler Federal Republic of Germany Murhart Riesberg Kushiyutrase 25 (72) Inventor Helmut Scheupaisel Federal Republic of Germany Vuainschutt by der Kaperet 11 (72) Inventor Schyutehuan Vuietner-Bornen Berger Federal Republic of Germany Republic Rubatsuha-Getsu Pingeru-Shiyutorase 34

Claims (14)

[Claims] 1. A slide bearing or base bearing for receiving the lower shaft end of the spindle and a rolling or neck bearing for receiving the neck of the spindle, the neck bearing and the base bearing being two separate areas of the support device. In which the base bearing area is configured as a complete structural unit (20) closed to the outside, and in addition to the base bearing (21), at least the elastic support of the base bearing (21), A support device for a spindle, characterized in that it has elements (28, 29, 30) that perform the functions of centering and buffering. 2. The structural unit (20) is provided with at least one spring element (29, 30) acting in the radial direction as an elastic support device and a centering device. The device according to. 3. The structural unit (20) is provided with a shock absorber (28) consisting of at least one element formed in the form of a spiral, the shock absorber being present during the winding of the shock absorber. The device according to claim 1 or 2. 4. The base bearing (21) comprises a spring element (29,
30. The shock absorber (30) and the shock absorber (28) are provided at a height which allows optimal elastic support, centering and damping of the base bearing.
Device. 5. The at least one shock absorber (28) and the at least one spring element (29, 30) comprise an inner tube (2).
Device according to one of claims 2 to 4, characterized in that it is provided between 4) and the outer tube (26) forming the radially outer closure of the structural unit (20). 6. At least one spring element (29, 3)
Device according to one of claims 2 to 5, characterized in that a device for limiting the deflection stroke of 0) is provided. 7. Device according to claim 6, characterized in that the outer tube (26 ') simultaneously forms the lower part of the bearing housing (17). 8. The radial bearing (2) comprising a base bearing (21).
Device according to one of claims 1 to 7, characterized in that it is formed from 2) and an axial bearing (23). 9. The base unit (21) wherein the structural unit (20) is a base bearing (21).
Device according to one of the preceding claims, characterized in that it is closed to the bottom by an insert (27) which supports the bottom from below and forms the bottom of the bearing housing (17). 10. A structural unit (10) for a neck bearing (11).
10. The device as claimed in claim 1, wherein the structural units for the base bearing are connected to one another by spacers of different lengths. 11. A structural unit (10) for a neck bearing (11).
Device according to claim 10, characterized in that the structural unit (20) for the base bearing (21) and the structural unit (20) can be inserted separately into the machine. 12. Structural unit (10) for neck bearing (11)
Has a substantially cylindrical head portion (14), and the inner wall of the head portion forms the rolling surface of the rolling element (13) of the neck bearing (11), and at least the head portion (14) rolls. Device according to claim 10 or 11, characterized in that it consists of a material which is hardened in the rolling range of the moving body (13). 13. A base bearing (21) is press-fitted into an inner tube (24) provided with at least one shock absorber (28), and then the inner tube (24) and the outer tube (26) are radiused. 13. The method according to claim 1, wherein the at least one spring element acts in a direction. 14. The apparatus according to claim 1, wherein at least the inner pipe, the outer pipe, and the shock absorber are integrally formed.
1. A method of manufacturing a support device for a spindle according to claim 1.