CZ416099A3 - Spindle support - Google Patents

Description

Spindle bearing

Explore ........ techniques

The invention relates to a spindle bearing, in particular in ring spinning machines and twisting machines, with a throat bearing and a foot bearing in an inner bearing housing which is surrounded by an outer bearing housing.

Existing ......... st and in ....... techniques

Due to the high rotational speed of the continuously occurring and radially acting oscillations, the corresponding damping devices must be used for the spindle support, especially for ring spinning machines and twisting machines. For this reason, as a rule, there is usually a radially acting vibration at the spindle bearing in the upper region. In known solutions which prevent this oscillation, the inner bearing sheath and the outer bearing sheath are connected by means of a mandrel to a resiliently elastic tapered zone, as for example disclosed in DE 40 36 353 A1. However, this solution results in a very long bearing.

The essence ........

The purpose of the spindle at the front of the design to release the resilient spring is to improve the bearing so that the lower and less space required of the present invention of this type can be costly than the spindle last in the radial direction.

The invention solves this object by supporting a spindle of the aforementioned type, wherein the inner bearing housing has at its lower end a pin and an outer bearing housing at its bottom a tapered extension or bore, the inner bearing housing pin anchored in the extension or bore of the outer bearing housing. the inner bearing shell is mounted in the outer bearing shell hinged with a defined stiffness. As a result, the construction length of the spindle bearing can be shortened. By eliminating the elastically elastic mandrel disclosed in DE 40 36 353 A1, the construction length of the spindle is reduced. Instead of anchoring the inner bearing shell and the outer bearing shell, it acts as a hinge around which the inner bearing shell is rotatable within the outer bearing shell.

The inner bearing housing and preferably also the outer bearing housing have a relatively thin-walled bottom. As a result, the thin-walled bottom acts as a membrane disc. The desired stiffness of the neck bearing can be adjusted by the thickness and shape of each bottom. In this way, the thin-walled bottoms can be sized such that, together with the bending strength of the journal of the inner bearing housing, they achieve the stiffness required for the cervical bearing.

For cost-effective fabrication, the inner bearing housing pin can be pressed or screwed into the inner bearing housing extension.

For ease of assembly and disassembly, the inner bearing housing pin, which can be guided through the bottom of the outer bearing housing and onto which nuts can be screwed, may have an external thread.

To simply center the inner bearing housing on the outer bearing housing, the outer bearing housing extension may have a constriction followed by an annular extension with an external thread to fix the centering device for the inner bearing housing.

For the same reasons, there may be an annular extension with a 4 4 4

444 444 nut and threaded stud with external thread. When the nut is tightened, the point protrusion is pressed against the bottom of the outer bearing housing, whereby the outer bearing housing extension is pressed to the side and the inner bearing housing is tilted.

In order to further damp the oscillation, a damping medium may be provided between the inner bearing housing and the outer bearing housing.

Overview ....... Fig. Lfc.! & ....... on ........ drawings

In the following, an exemplary embodiment of a spindle receptacle formed in accordance with the invention is illustrated in more detail by the accompanying drawings. The drawings show:

FIG. 1 is a cross-sectional view of a spindle bearing; FIG. 2 is a cross-sectional view of a second embodiment of a connection point between an inner bearing housing and an outer bearing housing; FIG. FIG. 4 is a cross-sectional view of a fourth embodiment of a connection between an inner bearing housing and an outer bearing housing.

Examples ....... of the embodiment ......... of the invention

Giant. 1 shows a bearing ..1 ... 0. spindles with throat bearing 11 and foot bearing., 12 .. Bearing ..1 ... 0. The spindle has an inner bearing housing .1..3 which is surrounded by an outer bearing housing 1.4. The inner bearing housing 1.3 has a pin 15 at its lower end. The outer bearing housing. .14 has on its bottom ..1 ... 6. outer bearing housing ..1 ... 4. a tapered extension 17 in which the pin 15 is pressed. This is very simple to manufacture. Bottom .1 ... 6 of outer bearing housing ..1..4. and the bottom, 1.8 of the inner bearing shell .1.3. are designed as relatively thin-walled. In this connection, the relatively thin-walled bottoms 1.6 and 1.8 ... 8 act as membrane discs or as cardan joints. Relatively thin-walled .1.6 and ..1, .8. and the pin ..1 ... 5, due to their bending stiffness, can spring the inner bearing housing 18 with the thrust bearing .1.1 and the foot bearing ..1, .2 in the radial direction. The required radial stiffness can be ensured by knowing the thickness and shape of the base 1.6, 18. Between the outer bearing housing. and an inner bearing housing 1.3 is provided with a damping medium 19, which is intended to dampen additional radial oscillations.

Giant. 2 shows a second alternative connection between the second outer bearing housing 2.0. and a second inner bearing housing 21. The second inner bearing housing 21 has, at its lower end, a second stud 22 with an external thread. The outer bearing housing 20 has at its lower end a tapered second extension 2.3 ® with an internal thread. The second inner bearing housing .21 can be threaded. screw it into the outer bearing housing 20.

Giant. 3 shows a third inner bearing housing 30 having at its lower end a third male threaded pin. Third outer bearing shell 3.2. has an opening 3.3 at its lower end. The third inner bearing housing 30 and the third outer bearing housing 32 can be connected to each other by means of a third pin 31, which is received in the bore 33, and a nut 3.4 which is screwed from outside onto the third pin 3.1.

Giant. 4 shows a fourth outer bearing housing 40. with annular extension of 4.1 on a tapered extension. On the extension 4,1, · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Another nut 42 is screwed in between the other nut. and 4.3. a fourth outer bearing shell 40 is provided with a ring 44 having point projections 45. When the other nut 4.2. tightens, the ring 44 is pressed by its point projections 45 against the bottom 4.3. the fourth outer bearing sheath .4.0, thereby expanding the extension 4 ... 1. and thus the fourth bearing housing 4.6 can be tilted in the desired direction. In this way, the centering of the fourth outer bearing housing 40 and the fourth inner bearing housing 46 is easy to implement.

Claims (7)

Spindle bearing, particularly in ring spinning machines and twisting machines, with a thrust bearing (11) and a foot bearing (12) in an inner bearing housing (13, 21, 30, 46) surrounded by an outer bearing housing (14, 20) 32, 40) characterized in that the inner bearing housing (13, 21, 30, 46) has a pin (15, 22, 31) at its lower end and the outer bearing housing (14, 20, 32, 40) has at its bottom (16, 43) of the outer bearing housing (14, 20, 32, 40) a tapered extension (17, 23) or an opening (33), wherein the pin (15, 22, 31) of the inner bearing housing (13, 21), 30, 46) is anchored in the extension (17, 23) or in the opening (33) of the outer bearing housing (14, 20, 32, 40), the inner bearing housing (13, 21, 30), 46) is mounted in the outer bearing housing (14, 20, 32, 40) hinged with a defined stiffness. Spindle bearing according to claim 1, characterized in that the inner bearing housing (13, 21, 30, 46) and preferably the outer bearing housing (14, 20, 32, 40) have a thin-walled bottom (16, 18, 43). Spindle bearing according to claim 1 or 2, characterized in that the pin (15, 22) of the inner bearing housing (13, 21) is pressed or screwed into the extension (17, 23) of the outer bearing housing (14, 20). Spindle bearing according to one of Claims 1 to 3, characterized in that the pin (31) of the inner bearing housing (30) is received in the bore (33) of the outer bearing housing (32) and on which the nut (34) is screwed. ) is provided with an external thread. Spindle bearing according to one of Claims 1 to 4, characterized in that it is. wherein the outer bearing shell extension (40) has a constriction beyond which an outer threaded extension (41) is provided to fix the centering device for the inner bearing housing (46). A spindle bearing according to claim 5, characterized in that a pointed projection nut or a further nut (42) is screwed onto the annular extension (41) with an external thread between which an annular ring (44) is located between the outer bearing housing (40). ) with point projection (45). Bearing according to one of claims 1 to 6, characterized in that a damping medium (19) is arranged between the inner bearing housing (13, 21, 30, 46) and the outer bearing housing (14, 20, 32, 40).