SK699A3 - High-speed bearing with a flexible element, particularly of spindleless spinning machine - Google Patents

Description

High-speed bearing with flexible member, especially open-end spinning machine

Technical field

The invention relates to a high-speed bearing with a resilient member, in particular an open-end spinning machine comprising a bushing which is housed in a resilient tube which is provided at both ends with resilient bushes, the resilient member having at least one through hole.

BACKGROUND OF THE INVENTION

High-speed bearings, especially in the bearing of the spinning rotor of an open-end spinning machine, at speeds higher than

000 min ”for functional reasons stored in the flexible member. At speeds up to 80,000 rpm, a flexible member according to CS AO 238,202 is used, and at speeds above 80,000 rpm a flexible member according to CS AO 256,305, or a flexible member which is conceptually based therefrom, is used. Both of these types of resilient members are provided with short-circuit openings that prevent undesired air flow through the bearing.

In the resilient member according to CS AO 238 202, these short-circuit openings are formed in the central part of its tube.

In the elastic member according to CS AO 256 305, due to the longer bearing housing length for higher revolutions, with the limited possibility of increasing the length of the elastic member, which is limited by the length of the bearing space in the bearing housing, j. in the front flexible case. Here, these openings are led through the rubber part of the flexible sleeve and open into the receiving surface. For dimensional reasons, it was then necessary to orient the front elastic member of the elastic member with the open side of the rubber portion toward the rear elastic member of the elastic member. However, the formation of such short-circuit openings places higher demands on manufacturing technology, and the orientation of the front flexible bushing of the flexible member is sometimes the cause of its damage during disassembly from the machine. Last but not least, this arrangement may negatively affect the dynamic characteristic

I * bearings of the spinning rotor with all negative consequences.

The invention aims to remedy the shortcomings previously used elastic members for speeds less than 80,000 Minle or flexible members on that basis at a speed greater than 80 000 min ^- · * ·.

SUMMARY OF THE INVENTION

The object of the invention is achieved by a high-speed bearing with a resilient member, in particular an open-end spinning machine, characterized in that at least one through hole is at least part of its surface situated between the resilient bushes in the resilient tube. provided at its front with a relief which extends at least beyond the proximal edge of the through hole in the tube of the resilient member.

BRIEF DESCRIPTION OF THE DRAWINGS

An exemplary embodiment of the invention is shown schematically in FIG. , which shows a cross section of a bearing housing for receiving a spinning rotor of an open-end spinning machine.

DETAILED DESCRIPTION OF THE INVENTION

An exemplary embodiment of the invention is described for receiving a spinning rotor 4 of an open-end spinning machine.

The high-speed bearing comprises a sleeve 1 which is housed in a cavity of the resilient member 8. The resilient member 8 is formed by a tube 80 at the ends of which known resilient bushes 81 are situated. 7th

In the portion of the tube 80 between the two flexible sleeves 81, piercing holes 6 are formed in this tube 80. The high-speed bearing housing 1 situated in the cavity of the resilient member 8 is on its outer periphery on its front side 10, i. j. in the illustrated embodiment, on the side adjacent to the spinning rotor 4, provided with a relief 2 that extends at least beyond the edge of the through holes 6 in the tube 80 of the resilient member 8, which is closer to the front bearing, thereby with the sleeve space 81.

behind the spinning is

t.

high-speed inside of both sides of the housing 10 loosely interconnected space 3 outside the tube 80 delimited

j. in the illustrated embodiment of the rotor 4 with the space 5 defined by the tube 80 by the flexible space by the tube 80.

the resilient member 8, both resilient bushes 81 of the resilient member 8 and the wall of the bearing body 7, in which an air leakage opening 70 is formed, as shown in the drawing. In this way, air then flows from the tube 80 from the front side 10 of the high-speed bearing to the aforementioned space 5 between the flexible bushes 81 outside the tube 80, i. j. in the illustrated embodiment from the space around the spinning rotor 4 to the free space outside the bearing body 7, without passing through the interior of the high-speed bearing with all the negative consequences such as drying and sliding of the lubricant.

The relief 2 on the outer circumference of the front side 10 of the high speed bearing housing X is formed by reducing the outer diameter of the high speed bearing housing 1 over the respective length of the housing X from its front side 10.

In the exemplary embodiment shown in the drawing, through holes 6 are already formed in the tube 80 of the resilient member 8 at the point where the resilient bush 81 ends at the spinning rotor 4, the rear of the spinning rotor 4 being received in this tube 80 and the high speed bearing bushing X. on its outer periphery on its front side 10, which is adjacent to the spinning rotor 4, is provided with a relief 2 which extends into one half of the through hole 6 in the length direction of the tube 80 of the resilient member 8. In another embodiment not shown hole 6 and its corresponding length of relief 2 on the outer circumference of the front side 10 of the high speed bearing housing X is different, corresponding to the length of the high speed bearing housing X and its position in the tube 80 of the resilient member 8.

The ratio between the size of the through holes 6 and the unloading size 2 of the high speed bearing housing X corresponds to the known requirements for the size of the air flow volume that the short-circuiting ducts thus produced must pass per unit of time.

Claims (1)

PATENT CLAIMS 1. A high-speed bearing with a resilient member, in particular an open-end spinning machine, comprising a bushing housed in a resilient member tube which is provided with resilient bushings at both ends thereof, wherein at least one through hole is formed in the resilient member. one through hole (6) is at least a part of its surface situated between the flexible bushes (81) in the tube (80) of the flexible member (8), the high-speed bearing housing (1) being provided with relief at its outer periphery from its front side (10) (2) that extends at least beyond the proximal edge of the through hole (6) in the tube (80) of the resilient member (8).