DE102017119477A1 - Needle or roller bearings - Google Patents

Abstract

A needle or roller bearing comprising a sleeve (2) or sleeve and a needle or roller ring inserted therein comprising a cage and needles or rollers supported thereon, wherein the needle or roller ring is axially secured in the sleeve (2) or sleeve on both sides, wherein at least on one side of the drawn sleeve (2) or sleeve locking means (6) are provided, on which a needle or roller ring axially locking, corresponding locking means (7) having annular disc (4) is fixed.

Description

The invention relates to a needle or roller bearing, comprising a sleeve or sleeve and a needle or roller ring inserted therein consisting of a cage and held it needles or rollers, wherein the needle or roller ring in the sleeve or sleeve is axially secured on both sides.

In such needle or roller bearings with a non-cutting, usually produced by deep-drawing sleeve or sleeve, the axial securing of the inserted needle or roller ring is formed by formed on the sleeve ends or sleeve end shelves. While a board or can bottom is usually already formed when pulling the sleeve or sleeve, the other after insertion of the needle or roller ring and possibly also additional sealing rings, sealing washers or spacers by mechanical folding of the sleeve or sleeve edge by crimping or the like is formed , For this purpose, in conventional storage, the already heat-treated sleeve, which can also be referred to as a sleeve, be tempered by an additional annealing step in the edge region to glow the already cured material sufficiently soft again, so that the flanging is given. As a result of this, process-related errors repeatedly arise due to excessively tempered sleeve or rims edges or too low tempered sleeve or rims edges, which can either affect the adjacent career hardness or disturbances in the crimping process itself, where then breakouts or cracks can form. Also, a too strong curling a Materialaufwurf train at the treadmill end, which is also detrimental, as well as any flicker chips that can adversely affect the product cleanliness, the noise behavior and the life.

The invention is therefore based on the problem to provide a contrast improved needle or roller bearings.

To solve this problem is provided according to the invention in a needle or roller bearings of the type mentioned that at least on one side of the drawn sleeve or bush locking means are provided on which a needle or roller ring axially locking, corresponding locking means having annular disc is fixed.

Other than before, in the needle or roller bearing according to the invention on at least one side (on the other side can already be formed during deep drawing of the sleeve or sleeve of the board) formed a corresponding axially securing board by means of a sleeve or bush side latched annular disc. Sleeve or bushing side and disk side corresponding, cooperating locking means are provided, respectively formed, which allow easy fixation of the annular disc on the sleeve or sleeve after filling with the needle or roller ring and optionally additional sealing rings, sealing washers or spacers. It is only necessary to lock the annular disk on the sleeve or bush via a simple pressing or pressing step, so that the cage and roller set as well as optionally the sealing rings, sealing washers or spacers are secured axially as a whole. Of course, it would also be possible in principle to form locking means on both sides of the sleeve or on one side of the sleeve and to fix corresponding annular discs on both sides.

For the attachment of the annular disc are - except for the formation of the locking means on the sleeve or sleeve - no additional specific heat treatment steps provide, which can adversely affect the function of the bearing. In addition, it is basically possible to rework the bearing if necessary, since a latched annular disc, sometimes called flanged wheel, can be dismantled again, so that a non-destructive reworking or a non-destructive failure analysis is possible. Also, the production of the bearing is much faster possible because the locking of the annular disc much easier and faster than can go from the expensive heat treatment and subsequent beading of the board. Also, in principle, the open sleeve or sleeve length can be reduced somewhat, since sleeve or bushing side no flare is vorzuhalten. The flange also provides an interface for a possible coupling of a sensor for condition monitoring of the bearing (eg with regard to vibrations, temperature, speed, etc.), because the flanged wheel provides a defined connection plane at which such a sensor can be arranged.

The locking means of the sleeve or sleeve as well as the annular disc are preferably prepared by chipless forming. As described in the introduction, in the needle or roller bearing according to the invention, the sleeve or sleeve is a drawn component. It is now possible, immediately upon pulling the sleeve or bushing with appropriate tool design and the corresponding latching means respectively form the corresponding locking geometry or this immediately after also form with a corresponding tool without cutting by forming. Similarly, the annular disc, which is usually punched out of a corresponding sheet material, immediately during punching (forming) be provided with the appropriate locking means.

The locking means of the sleeve or sleeve can be formed as a circumferential locking groove or as local, distributed around the circumference recesses, while the locking means of the annular disc are formed as distributed around the circumference locking projections. The latching projections snap or snap when joining the annular disc in the locking groove or the recesses of the sleeve or sleeve, so that there is a solid bond, which, however, is also solvable again when needed. This locking connection can be easily achieved by a simple pressing.

It is either possible that the radial groove or the recesses are open to the outside and the locking projections are directed inward, so that the annular disc surrounds the sleeve or sleeve edge side quasi. Alternatively, the arrangement may also be reversed, so that the sleeve or sleeve side, the radial groove or the recess are directed inwardly and the disk-side locking projections to the outside, so that the disc can be completely inserted into the sleeve or sleeve.

The wall thickness of the sleeve or bush should be between 0.5 - 5.0 mm, it is as stated according to the invention to a drawn, that is produced without cutting sleeve or sleeve.

• - Herstellen einer Hülse oder Büchse mit einem an einer Seite ausgebildeten Axialbord oder Büchsenboden durch Ziehen eines Blechmaterials,
• - Ausbilden von Rastmitteln an der anderen Seite durch spanloses Bearbeiten des Blechmaterials oder der Hülse oder Büchse, während oder nach dem Ziehen,
• - Einbringen oder Aufsetzen eines mit Nadeln oder Rollen befüllten Käfigs und gegebenenfalls zusätzlicher Dichtringen, Dichtscheiben oder Distanzscheiben in oder auf die Hülse oder Büchse,
• - Befestigen einer Rastmittel aufweisenden Ringscheibe an den Rastmitteln der Hülse oder Büchse.

In addition to the bearing itself, the invention further relates to a method for producing a needle or roller bearing of the type described, with the following steps:

• Producing a sleeve or bushing with an axial flange or bushing bottom formed on one side by pulling a sheet metal material,
• Forming locking means on the other side by chipless machining of the sheet material or sleeve or sleeve, during or after drawing,
• Introduction or placement of a cage filled with needles or rollers and optionally additional sealing rings, sealing washers or spacers in or on the sleeve or sleeve,
• - Attaching a locking means having annular disc to the locking means of the sleeve or sleeve.

According to the invention, in a first step, the sheet metal material is first formed without cutting by drawing to produce the sleeve or bushing with axial flange formed on one side. Already during this forming step, the sleeve or bush side locking means can be worked without cutting, alternatively, this can also be done in a subsequent step, also without cutting. Then, in a next step, the needle or roller ring and, if necessary, additional sealing rings, sealing washers or spacers are mounted. This can be done either by being inserted into the sleeve or sleeve, the sleeve / sleeve thus virtually forms an outer ring. Alternatively, it is also conceivable to postpone the needle or roller ring on the sleeve or sleeve, that is, that the sleeve or sleeve engages in the ring and thus forms the inner ring.

In any case, then in a final step, the annular disc sleeve or sleeve side recognized and locked.

The forming of the locking means on the sleeve or bushing after pulling can be done for example by embossing or rolling, the list of these non-cutting forming process is not exhaustive.

The latching means of the sleeve or sleeve itself are preferably formed as a circumferential groove or as a local, distributed around the circumference recesses, wherein the radial groove or the recesses can be formed either open to the outside or inwardly open.

The sheet material used should have a wall thickness between 0.5-5.0 mm.

• 1 eine Prinzipdarstellung, im Schnitt, eines Nadel- oder Rollenlagers ohne Nadel- oder Rollenkranz,
• 2 eine vergrößerte Ansicht des Bereichs II aus 1,
• 3 eine Perspektivansicht der Ringscheibe der Anordnung aus 1,
• 4 eine Prinzipdarstellung, im Schnitt, eines erfindungsgemäßen Nadel- oder Rollenlagers einer zweiten Ausführungsform ohne Nadel- oder Rollenkranz,
• 5 eine vergrößerte Teilansicht des Bereichs V aus 4,
• 6 eine Perspektivansicht der Hülse mit der Ringscheibe der Anordnung aus 4, und
• 7 eine Perspektivansicht der Ringscheibe der Anordnung aus 4.

The invention will be explained below with reference to embodiments with reference to the drawings. The drawings are schematic representations and show:

• 1 a schematic representation, in section, of a needle or roller bearing without needle or roller ring,
• 2 an enlarged view of the area II 1 .
• 3 a perspective view of the annular disc of the arrangement 1 .
• 4 a schematic representation, in section, of a needle or roller bearing according to the invention a second embodiment without needle or roller rim,
• 5 an enlarged partial view of the area V from 4 .
• 6 a perspective view of the sleeve with the annular disc of the arrangement 4 , and
• 7 a perspective view of the annular disc of the arrangement 4 ,

1 shows an inventive needle or roller bearings 1 a first embodiment, wherein the needle or roller rim is not shown. Shown is a cylindrical sleeve 2 , which was produced by pulling a thin sheet material having a wall thickness between 0.5 - 5.0 mm, without cutting. At a sleeve end is a radially inboard board 3 formed during deep drawing, which serves as an axial stop or as an axial backup for the needle or roller ring not shown in detail.

On the opposite side, this axial securing via a releasably arranged annular disc 4 , which is a separate component and is also made of a, in the example shown even thinner, sheet metal material is formed. Also, this annular disc is produced without cutting preferably by a drawing process.

The connection of sleeve 2 and annular disc 4 via a locking connection 5 what about the sleeve 2 first locking means 6 and on the ring disk 4 second locking means 7 trained respectively provided are.

In the illustrated embodiment, the sleeve-side first locking means 6 as an annular circumferential, radially outwardly open locking groove 8th formed, for example, can be formed immediately when pulling the sleeve or in a subsequent process step, for example by rolling or embossing.

In contrast, the second locking means 7 the annular disc 4 as radially inwardly bent locking projections 9 trained, where - see 3 - Distributed around the circumference in the embodiment shown six such locking projections 9 are provided.

As the sectional view according to 2 shows, snap the locking projections 7 behind the latching shoulder 10 holding the locking groove 8th limited at the end. The snapping is achieved by the annular disc 4 after inserting the needle or roller ring and possibly also additional sealing rings, sealing washers or spacers on the sleeve 2 is pressed. Here are the locking projections 9 slightly bent radially outward, with further pressing they then snap into the locking groove 8th a, so that the fixed, but releasable connection is given.

The 4 to 7 show a second embodiment of a needle or roller bearing according to the invention 1 , wherein like reference numerals are used for the same components.

4 shows a similar sectional view as 1 , also there is the sleeve 2 with the already formed when pulling the sleeve board 3 shown. The opposite axial securing is also here by means of an annular disc 4 realized, the releasable via a locking connection 5 with the sleeve 2 connected is.

5 shows, similar to 2 , An enlarged partial view of the region of the latching connection. On the one hand the sleeve is shown 2 with their first locking means 6 as an annular circumferential, radially inwardly open locking groove 11 educated.

At the ring disk 4 are the second locking means 7 formed, which - similar to the embodiment according to 1 - In the form of several distributed around the circumference, but radially outwardly directed locking projections 12 are formed.

When joining the annular disc 4 with the sleeve 2 after inserting the needle or roller ring and possibly also additional sealing rings, sealing washers or spacers, the annular disc 4 again placed on the sleeve end face and pressed. The locking projections 12 are pressed slightly inward and snap behind the respective locking groove 11 limiting snap shoulder 13 , so that there is a solid, but releasable latching compound.

7 shows in an enlarged schematic representation of the annular disc 4 with the locking projections 12 , As can be seen, these are directed radially outward, so that they from the inside into the corresponding locking groove 11 snap in and intervene.

Again, the locking groove 11 already during deep drawing of the sleeve 2 be formed. It is also conceivable, however, to form them in a subsequent process step by non-cutting forming, for example by rolling or embossing.

As described, the sleeve or sleeve has a wall thickness between 0.5 - 5.0 mm, so that it can be formed in a drawing process without cutting from a corresponding sheet material and also readily the board 3 can be trained. The ring disk 4 on the other hand, as in particular 1 shows, be formed from a contrast thinner material than the sleeve or sleeve material. Both can also have the same wall thickness.

LIST OF REFERENCE NUMBERS

1

Needle or roller bearings

2

Sleeve board

4

washer

5

locking connection

6

first locking means

7

second locking means

8th

locking groove

9

catch projection

10

locking shoulder

11

locking groove

12

catch projection

13

locking shoulder

Claims (10)

A needle or roller bearing comprising a sleeve (2) or sleeve and a needle or roller ring inserted therein comprising a cage and needles or rollers supported thereon, wherein the needle or roller ring is axially secured in the sleeve (2) or sleeve on both sides, characterized in that at least on one side of the drawn sleeve (2) or sleeve locking means (6) are provided, on which a needle or roller ring axially locking, corresponding locking means (7) having annular disc (4) is fixed. Needle or roller bearings after Claim 1 , characterized in that the latching means (6, 7) of the sleeve (2) or sleeve and / or the annular disc (4) are machined by chipless forming. Needle or roller bearing according to one of the preceding claims, characterized in that the latching means (6) of the sleeve (2) or sleeve as circumferential detent groove (8, 11) and the latching means (7) of the annular disc (4) as distributed around the circumference Locking projections (9, 12) are formed. Needle or roller bearings after Claim 3 , characterized in that the latching groove (8) open to the outside and the latching projections (9,) of the annular disc (4) are directed inwardly, or that the latching groove (11) inwardly open and the latching projections (12) of the annular disc (4 ) is directed outwards. Needle or roller bearing according to one of the preceding claims, characterized in that the wall thickness of the sleeve (2) or sleeve is between 0.5 - 5.0 mm. Method for producing a needle or roller bearing according to one of the preceding claims, comprising the following steps: - Making a sleeve (2) or sleeve with a side formed on a board (3) or bush bottom by pulling a sheet material, during or after drawing, forming locking means (6) on the other side by chipless machining of the sheet material or the sleeve (2) or bushing, Introduction or placement of a cage filled with needles or rollers into or onto the sleeve (2) or sleeve, - Attaching a locking means (7) having annular disc (4) on the locking means (6) of the sleeve (2) or sleeve. Method according to Claim 6 , characterized in that the latching means (6) are formed after pulling by embossing or rolling on the sleeve (2) or sleeve. Method according to Claim 6 or 7 , characterized in that the latching means (6) of the sleeve (2) or sleeve as a circumferential locking groove (8, 11) is formed. Method according to Claim 8 , characterized in that the latching groove (8, 11) is formed open to the outside or open to the inside. Method according to one of Claims 6 to 9 , characterized in that a sheet material with a wall thickness between 0.5 - 5.0 mm is used.

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