Axial bearing and pole disk for an axial bearing

Patent metadata

Field	Value
Publication number	US-12110615-B2
Application number	US-202217873350-A
Country	US
Kind code	B2
Filing date	Jul 26, 2022
Priority date	Jul 28, 2021
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

An axial bearing for a spinning rotor of an open-end spinning machine includes a static bearing component having axially polarized permanent magnet rings delimited on both sides by ferromagnetic pole disks arranged in a bearing housing, the static bearing component interacting with a dynamic bearing component formed by ferromagnetic webs arranged on a rotor shaft of the spinning rotor. Each pole disk includes a disk ring, a central opening, a vertical axis, and a horizontal axis. The disk ring includes an area of reduced ferromagnetic material on an inner circumference thereof at the vertical axis as compared to a remaining inner circumferential area of the disk ring.

First claim

The invention claimed is:

1. An axial bearing for a spinning rotor of an open-end spinning machine, wherein the spinning rotor is supported free of axial thrust in a bearing interstice of a support disk bearing arrangement, the axial bearing comprising:
a static bearing component comprising at least two axially polarized permanent magnet rings delimited on both sides by ferromagnetic pole disks, the magnetic rings and pole disks arranged in a bearing housing such that, in an installed state, identical poles are positioned opposite each other;
the static bearing component configured for interacting during operation with a dynamic bearing component formed by ferromagnetic webs arranged on a rotor shaft of the spinning rotor at a distance from the pole disks;
each pole disk comprising a disk ring and a central opening, each pole disk further comprising a vertical axis and a horizontal axis;
the disk ring comprising an area of reduced ferromagnetic material on an inner circumference thereof at the vertical axis as compared to a remaining inner circumferential area of the disk ring; and
wherein the area of reduced ferromagnetic material is defined by one or both of a chamfer formed in the disk ring or a non-ferromagnetic material added onto the disk ring.

2. The axial bearing of claim 1 , wherein the chamfer is one-sided, two-sided, crescent-shaped, wedge-shaped, or trapezoidal-shaped.

3. The axial bearing of claim 1 , wherein the central opening comprises a height along the vertical axis that is different than a width of the central opening along the horizontal axis.

4. The axial bearing of claim 1 , wherein the area of reduced ferromagnetic material is along the vertical axis in a lower half of the disk ring or in an upper half of the disk ring above the vertical axis.

5. The axial bearing of claim 1 , wherein the non-ferromagnetic material comprises a slide bearing material.

6. The axial bearing of claim 1 , wherein the non-ferromagnetic material is elastic or is elastically mounted onto the disk ring.

7. The axial bearing of claim 1 , wherein the non-ferromagnetic material is connected with the ferromagnetic material of the disk ring in a form-locking or force-locked manner.

8. The axial bearing of claim 1 , wherein the area of reduced ferromagnetic material comprises an interruption in the disk ring at the vertical axis.

9. A pole disk for an axial bearing for a spinning rotor of an open-end spinning machine, the pole disk comprising:
a disk ring having a central opening, a vertical axis, and a horizontal axis; and
an area of reduced ferromagnetic material on an inner circumference thereof at the vertical axis as compared to a remaining inner circumferential area of the disk ring; and
wherein the area of reduced ferromagnetic material is defined by one or both of a chamfer formed in the disk ring or a non-ferromagnetic material added onto the disk ring.

10. The pole disk of claim 9 , wherein the chamfer is one-sided, two-sided, crescent-shaped, wedge-shaped, or trapezoidal-shaped.

11. The pole disk of claim 9 , wherein the central opening comprises a height along the vertical axis that is different than a width of the central opening along the horizontal axis.

12. The pole disk of claim 9 , wherein the area of reduced ferromagnetic material is along the vertical axis in a lower half of the disk ring or in an upper half of the disk ring above the vertical axis.

13. The pole disk of claim 9 , wherein the non-ferromagnetic material comprises a slide bearing material.

14. The pole disk of claim 9 , wherein the non-ferromagnetic material is elastic or is elastically mounted onto the disk ring.

15. The pole disk of claim 9 , wherein the non-ferromagnetic material is connected with the ferromagnetic material of the disk ring in a form-locking or force-locked manner.

16. The pole disk of claim 9 , wherein the area of reduced ferromagnetic material comprises an interruption in the disk ring at the vertical axis.

17. A bearing housing of an axial bearing for a spinning rotor of an open-end spinning machine, comprising:
at least two axially polarized permanent magnet rings delimited on both sides by ferromagnetic pole disks such that identical poles are positioned opposite each other;
a static bearing component configured for interacting during operation with a dynamic bearing component formed by ferromagnetic webs arranged on a rotor shaft of the spinning rotor at a distance from the pole disks;
each pole disk comprising a disk ring and a central opening, each pole disk further comprising a vertical axis and a horizontal axis;
the disk ring comprising an area of reduced ferromagnetic material on an inner circumference thereof at the vertical axis as compared to a remaining inner circumferential area of the disk ring; and
wherein the area of reduced ferromagnetic material is defined by one or both of a chamfer formed in the disk ring or a non-ferromagnetic material added onto the disk ring.

Assignees

• Rieter Ag Maschf

Inventors

• Schaeffler Gernot

Classifications

• D01H7/12

  Bolsters; Bearings · CPC title

• F16C32/0419 Primary

  with facing radial projections · CPC title

• F16C2340/18

  Apparatus for spinning or twisting · CPC title

• F16C39/02

  using mechanical means · CPC title

• D01H4/12 Primary

  Rotor bearings; Arrangements for driving or stopping (control therefor D01H4/42) · CPC title