CN1940154A

CN1940154A - Bearing assembly

Info

Publication number: CN1940154A
Application number: CNA2006101599538A
Authority: CN
Inventors: 汉斯·沙赫勒克尔
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-28
Filing date: 2006-09-28
Publication date: 2007-04-04
Also published as: DE102005046392A1

Abstract

The invention provides a bearing assembly for fixed rollers (210, 310) particularly for a drawing unit of spinning machine. The bearing assembly comprises a shell-like middleware (21, 31) for installing a first bearings (2A, 3A) and a second bearing (2B, 3B). The first bearing (2A, 3A) and second bearing (2B, 3B) is used for the mandrel (23, 33) of the fixed rollers (210, 310). The bearing assembly is characterized in that the outer rings (22a, 22b, 32a, 32b) of the first bearing (2A, 3A) and the second bearing (2B, 3B) are mounted on the outer periphery of the middleware.

Description

Bearing assembly

Technical field

The present invention relates to a kind of bearing assembly, this bearing assembly is used for the fixed roll that the drafting unit of spinning machine is particularly used, this bearing assembly comprises the shell-like centerpiece (middle-piece) that the clutch shaft bearing and second bearing are installed, and described clutch shaft bearing and described second bearing are used to install the axle that is used for described fixed roll.

Background technology

At the known bearing assembly that is used for fixing roller (pressure roll that for example is used for the drafting unit of spinning machine), be configured to have the assembling jacket cylinder outer race, axially the fixed roll of assembling is mounted and rests against on the axle of passing so-called middleware, this axle is rotatably mounted by the rolling contact bearing that is arranged in this middleware.

Be arranged on middleware middle part, be used for that the saddle type position that this middleware is fixedly secured on the drafting unit is had the predetermined outer diameter that limits width and 9.5mm, to be used for that fixed roll is installed in bearing part (load carrier) on the compatible ring spinner in the whole world.This size has determined the maximum in the hole in the middleware to allow diameter, therefore, is considering when for the running in bearings ball axle may be tilted in middleware, and this size has also determined the maximum of axle to allow that the maximum of diameter and bearing ball allows diameter.Why Here it is needs axle thinner relatively, and ball must be less relatively ball can be assemblied in the reason in the circle.The rated load of bearing assembly and therefore its service life basically by ball and the decision of axle diameter.

In known bearing assembly, the outer ring is press-fit in the groove that processes in the interior week of middleware.Ball and retainer are installed on the such side of middleware very simple, promptly ball rolls in the circle of this side in bearing outer ring and in the groove that processes in axle, yet it is very difficult that relative bearing assembly is installed.It is necessary to make axle to tilt to the degree that singly ball that belongs to the row of relative bearing assembly to be packed into respect to middleware.For axle can be tilted fully with respect to middleware, need fully big annular gap between the hole in axle and this middleware.In known bearing assembly, lubricate this two bearings by the hole that in middleware, gets out.Such situation is arranged usually, that is, lubricating grease obtains inhomogeneous path near two bearings by the annular gap between axle and the middleware, thereby causes bearing to wear and tear too early.There is negative effect in the very little same life-span to bearing assembly of bearing diameter.

Summary of the invention

The present invention is based on such purpose, promptly construct a kind of bearing assembly that is used for fixing roller, thereby make and need axle be tilted with respect to middleware, perhaps only need very slight inclination.

Described purpose realizes being, now the bearing outer ring of the clutch shaft bearing and second bearing is arranged in the periphery of middleware.Bearing in the bearing assembly that this structure makes it possible to adopt bigger rolling element (for example, ball) to be used for fixing roller now, thereby enlarged markedly the rated load of described bearing assembly, thus make bearing assembly have the service life of significant prolongation.

In addition, compared with prior art, according to the structure of bearing assembly of the present invention make now described fixed roll axle simplify greatly in the assembling at described middleware place, convenient, but and automation carry out.

In another aspect of this invention, regulation is configured to bearing radial force and axial force with described clutch shaft bearing, and described second bearing construction is become bearing radial force, thereby the nothing that forms described fixed roll axle is fixed/the floating bearing assembly partially.

In still another aspect of the invention, regulation is configured to the ball bearing of bearing radial force and axial force with described clutch shaft bearing, and second bearing construction is become the needle bearing of bearing radial force.This has realized the further increase of the rated load in the described needle bearing zone of described bearing assembly, thereby has further increased the service life of assembly according to the present invention.

In another aspect of the present invention, described fixed roll includes the roll body that is drilled with the transverse holes (crosswise) that is used for lubricated described bearing, shown in transverse holes closed and sealed by each jacket that rests against on the described roll body.The advantage that this obtained is that lubricating grease arrives described bearing assembly reliably and can not drip from described lubrication hole.Described jacket weares and teares in normal running, therefore needs to change frequently.Therefore, when changing cover, finish the lubricated of bearing.

Described purpose also realizes by second achievement, described second achievement is, in the interior week of described middleware (claim 6), the inventor also finds to there is no need to make two bearings to have identical rated load here by Construction integration in the outer ring of described clutch shaft bearing and described second bearing.

This just structure makes can form described middleware by thick-walled pipe now, and impewdance matching is for example made and preferably located in the end at least to this thick-walled pipe by ball-bearing steel.The blank of this pipe can obtain on market with low cost.

As achievement as described in just now on the other hand in, a bearing of the bearing assembly of described fixed roll is configured for the needle bearing of top load.

Description of drawings

Can find out other features and advantages of the present invention with reference to accompanying drawing from the following description of dependent claims and exemplary embodiment, in these accompanying drawings:

Fig. 1 represent from commonly known in the art, be used for shown in the bearing assembly of fixed roll of assembling;

Fig. 2 is illustrated in the axle that assembly process tilts with respect to the middleware in the bearing assembly of prior art shown in Figure 1;

Fig. 3 represents the exemplary embodiment according to bearing assembly of the present invention, and the outer ring of this bearing is configured to the bearing shoulder;

Fig. 4 represents the another exemplary embodiment according to bearing assembly of the present invention, and this bearing assembly comprises rigid bearing and floating bearing;

Fig. 5 represent according to second achievement, according to the exemplary embodiment (claim 6 etc.) of bearing assembly of the present invention;

Fig. 6 represent according to second achievement, according to the another exemplary embodiment (claim 6 etc.) of bearing assembly of the present invention.

The specific embodiment

Referring now to Fig. 1 and Fig. 2, show the bearing assembly that is used for fixing roller 10 from commonly known in the art, Fig. 1 shows and has the fixedly bearing assembly of middleware 1, this middleware 1 comprises bearing

outer ring

2a and 2b, and bearing

outer ring

2a and 2b arrange in the groove of processing in the interior week that is middleware 1 in the end of this middleware 1.Process axle groove 3a and 3b in axle 3, this axle groove 3a and 3b form the inner ring of bearing A and B, and this inner ring is equipped with ball row 4a and 4b and retainer.Roll body 5a and 5b that jacket 6 is installed are pressed in stretching out above the appropriate position on the end of bearing A and B of axle 3.In the zone at the saddle type position 14 at middleware 1 middle part, be drilled with lubrication hole 15, bearing A and B be lubricated by this lubrication hole.

Referring now to Fig. 2, about known bearing assembly the assembling stage before state shown in Figure 1, show that in assembly left-hand side bearing A has been equipped with ball 4a but right-hand side bearing B does not also have middleware 1 under the state of ball and the axle 3 that tilts with respect to middleware 1 from prior art.In order to assemble ball 4b, make axle 3 eccentric inclinations.Ball 4b to be illustrated is contained between bearing outer ring 2b and the axle groove 3b, and ball 4b relative to each other distributes and assembling and positioning in treating the retainer of axially installing equably.

In the zone at the saddle type position 14 of middleware 1, this saddle type position 14 has the diameter D that is generally 9.5mm in the world, is used for the drafting unit that ring spinner is used.This size has correspondingly been stipulated the maximum possible diameter in the hole in the middleware, thereby consider that the above-mentioned inclination of axle, this size also stipulated the maximum possible diameter of the maximum possible diameter of axle and ball and therefore stipulated the rated load of stationary roller shaft bearing assembly.Therefore, Here it is needs carefullyyer relatively as the axle in the known bearing assembly of prior art 3, and ball 4a and 4b are correspondingly less relatively ball 4b can be assemblied in the reason between aforesaid bearing outer ring 2b and the axle groove 3b.

Referring now to Fig. 3, show example embodiment according to bearing assembly of the present invention, as to be used for fixing roller, wherein be installed in fixed roll 210 on the axle 23 and be configured to the fixed roll 10 known to Fig. 1 basic identically, so also be applicable to following description about Fig. 4 and Fig. 5.Bearing

outer ring

22a and 22b axially press fit on the middleware 21 as the shoulder of

bearing

2A and 2B, and the shoulder of described bearing is location externally all, and the tangent line of shoulder radius all forms the interference fit of corresponding outer ring on middleware 21 in all cases.At bearing

ball

24a and 24b as shown in Figure 3, that it is evident that the contact of rolling in according to exemplary embodiment of the present invention, they are obviously bigger, are arranged in

axle groove

23a and 23b than the groove width of prior art embodiment.

Referring now to Fig. 4, show the another embodiment of bearing assembly according to the present invention, only point out the main distinction with the structure of bearing assembly shown in Figure 3.That show on this bearing assembly left-hand side is the bearing 3A that is expressed as the radial-axial ball bearing, and this ball bearing has the bearing outer ring 32a on the periphery that is press fitted into middleware 31.Bearing 3B and relative installation of this bearing 3A, this bearing 3B comprise on the periphery that is press fitted into middleware 31 and are used as the bearing outer ring 32b of floating bearing outer ring.Similar with the structure shown in Fig. 3, in axle 33, be processed with

axle groove

33a and 33b as the inner ring of bearing 3A and

3B.Roll body

35a and 35b that jacket 36 is installed press fit over stretching out on the end that surpasses bearing 3A and 3B of axle 33.

Referring now to Fig. 5, show the purpose that forms basis of the present invention, according to the present invention the exemplary embodiment of second achievement, this embodiment comprise on the left-hand side axially-radial needle bearing 4B on radial ball bearing 4A and the right-hand side.Thereby, only on the left-hand side of axle 43, being provided with the axle groove 43a that is used for ball 45a, described ball 45a rolls among the bearing outer ring 42a in week in being configured in middleware 43 integratedly.

Referring now to Fig. 6, show the purpose that forms basis of the present invention, according to the present invention the exemplary embodiment of second achievement, this embodiment is the bearing assembly that is used for fixing roller 510, this bearing assembly comprise on the left-hand side axially-same type on radial ball bearing 5A and the right-hand side axially-radial ball bearing 5B.Therefore, the characteristics of axle 53 are axle groove 53b on axle groove 53a on the left-hand side, that be used for ball 55a and the right-hand side, that be used for ball 55b, and ball 55b rolls among the bearing outer ring 52b in week in being configured in middleware 51 integratedly.For described situation is shown, amplify the end play of the bearing in the zone that shows the bearing 5B on Fig. 6 right-hand side.By contrast,, yet in this case, also need to be provided with enough end play, block avoiding greater than 0 (being about 0.1mm in actual applications) although in bearing assembly shown in Figure 3, almost do not demonstrate any end play of bearing.For assembling ball 55b, need make axle 53 from the longitudinal centre line slight inclination, so by the retainer of axial installation ball 55b is contained between bearing outer ring 52b and the axle groove 53b, described ball relative to each other evenly distributes and locatees.

Be drilled with

transverse holes

29,39,49 and 59 in as Fig. 3, Fig. 4, Fig. 5 and roll body shown in Figure 6, four embodiment of bearing assembly according to the present invention, be used for lubricating bearings, each boring is covered by

jacket

26,36,46 and 56 respectively.These cover in the operation and wear and tear, thereby need to change frequently, when changing to bearing on lubricating grease.

Claims

1, a kind of bearing assembly, this bearing assembly are used for the fixed roll (210 that the drafting unit of spinning machine is particularly used; 310), this bearing assembly comprises installation clutch shaft bearing (2A; 3A) with the second bearing (2B; Shell-like centerpiece (21 3B); 31), described clutch shaft bearing (2A; 3A) with the described second bearing (2B; 3B) installation is used for described fixed roll (210; 310) axle (23; 33); This bearing assembly is characterised in that: described clutch shaft bearing (2A; 3A) with the described second bearing (2B; Bearing outer ring 3B) (22a, 22b; 32a 32b) is arranged in described middleware (21; 31) periphery.

2, bearing assembly according to claim 1 is characterized in that, described clutch shaft bearing is configured to bearing radial force and axial force, and described second bearing is configured to bearing radial force.

3, bearing assembly according to claim 2 is characterized in that, described clutch shaft bearing is configured to ball bearing, and described second bearing is configured to needle bearing.

4, according to each described bearing assembly in the claim 1 to 3, it is characterized in that described fixed roll (210; 310) include roll body (25a, 25b; 35a, 35b) and jacket (26; 36), described roll body (25a, 25b; 35a 35b) is drilled with and is used for lubricated described bearing (2A, 2B; 3A, transverse holes (29 3B); 39), described transverse holes is by described jacket (26; 36) sealing.

5, according to each described bearing assembly in the claim 1 to 4, it is characterized in that, described clutch shaft bearing and described second bearing are same type, be applicable to and bear axial force and radial load or bearing radial force only, thereby described bearing bears axial force and radial load or bearing radial force only when operation.

6, a kind of bearing assembly, this bearing assembly is used for the fixed roll (410) that the drafting unit of spinning machine is particularly used, this bearing assembly comprises the shell-like centerpiece that clutch shaft bearing (4A) and second bearing (4B) are installed, and described clutch shaft bearing (4A) and described second bearing (4B) are used for installing the axle (43) that is used for described fixed roll (410); This bearing assembly is characterised in that: (42a 42b) is configured in the interior week of described middleware (41) bearing outer ring of described clutch shaft bearing (4A) and described second bearing (4B) integratedly.

7, bearing assembly according to claim 6 is characterized in that, described clutch shaft bearing (4A) is configured to bearing radial force and axial force, and described second bearing (4B) is configured to bearing radial force.

8, bearing assembly according to claim 6 is characterized in that, described clutch shaft bearing (4A) is configured to ball bearing, and described second bearing (4B) is configured to needle bearing.

9, according to each described bearing assembly in the claim 6 to 8, it is characterized in that, described fixed roll (410) includes roll body (45a, 45b) and jacket (46), described roll body (45a, 45b) be drilled with and be used for lubricated described bearing (described transverse holes (49) is sealed by described jacket (46) for 4A, transverse holes 4B) (49).

10, according to each described bearing assembly in the claim 6 to 9, it is characterized in that, described clutch shaft bearing and described second bearing are same type, be applicable to and bear axial force and radial load or bearing radial force only, thereby described bearing bears axial force and radial load or bearing radial force only when operation.