JP2002147447A - Bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely position a flange bearing in a housing hole without any necessity of tight fitting, other expensive measures, and extremely precise finishing of the housing hole or a bearing outer ring in a bearing device comprising an inner ring 1, the outer ring 2, and a plurality of rolling elements 3 disposed between the inner and outer rings 1 and 2, having a lateral side flange 6 in the outer ring 2 so as to fix the outer ring 2 to a housing 5, and rotatably supporting a journal 4 on the housing 5. SOLUTION: At least, three centering elements having shapes of rolling elements 7, 8, 9, and 10 are distributedly disposed circumferentially between the outer ring 2 and the housing 5 and/or between the inner ring 1 and the journal 4 to support.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises an inner race, an outer race, and a plurality of rolling elements disposed between inner and outer races, the outer race having a lateral flange, and the outer race being fixed to a housing by the lateral flange. The present invention relates to a bearing device for rotatably supporting a journal as a shaft element with respect to a housing as described above.

[0002]

2. Description of the Related Art A bearing device of this type is known in the past, in particular in printing machines. The bearing comprises a lateral flange by means of which the bearing is first positioned in the housing and subsequently secured to the housing by suitable bolts.

In this case, precise relative positioning of the bearing and the housing is achieved by a tight fit, which on the one hand means a high production cost and, on the other hand, always exists tolerances. This limits the interchangeability of the various flange bearings.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bearing device of the type mentioned at the outset, in particular for a printing press, without a tight fit or without other expensive measures. It is still another object of the present invention to improve the positioning of the flange bearing in the housing hole without requiring the housing hole or the bearing outer ring to be extremely accurately finished.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided, in accordance with the invention, a core in the form of a rolling element between an outer race and a housing and / or between an inner race and a journal as a shaft element to be supported. This is solved by the fact that the dispensing elements are arranged at least at three places in the circumferential direction.

[0006] Preferably, the centering rolling elements are uniformly distributed around the circumference of the outer or inner ring. Furthermore, the rolling elements are advantageously guided on raceways or grooves provided on the outer or inner circumference of the inner or outer ring.

In an embodiment of the invention, a packing is arranged between the outer race and the housing and / or between the inner race and the journal to be supported.

The rolling elements employed for centering the bearing device are preferably balls. A plurality of rolling elements can be provided in the bearing device in the axial direction.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings.

In FIG. 1, a bearing device comprises an inner ring 1 and an outer ring 2.
The rolling element 3 is disposed between the inner and outer rings 1 and 2 in a known manner so that the inner and outer rings 1 and 2 can rotate relative to each other. The journal device (shaft) 4 of the printing press roll 14 is supported by the housing 5 by the bearing device. For this purpose, the outer ring 2 has a lateral mounting flange 6, which is fixed to the housing 5 by means of this mounting flange 6 via bolts.

An outer peripheral surface 12 of the outer race 2 forms a gap between the outer race 2 and a bearing receiving hole 11 formed in the housing 5.
Therefore, the bearing device can be displaced in the radial direction by a certain distance before the bolts fixing the mounting flange 6 to the housing 5 are tightened, so that the journal 4 to be supported by the bearing device can be precisely centered. The bearing device can be positioned so as to extend out and surround it. Balls 7, 8, 9, 10 are provided for centering the bearing device. These balls 7, 8, 9, 10 are arranged between the outer ring 2 and the housing 5 and / or between the inner ring 1 and the journal 4. FIG. 1 shows four types of sphere arrangement methods. Usually, it is sufficient to adopt only one of the ball arrangement methods.

In order to guide the ball accurately, the balls 7, 8,
A raceway surface 16 or a groove 17 is provided on the inner ring 1 or the outer ring 2 so that the rollers 9 and 10 roll as specified. Further, a gap formed between the bearing housing hole 11 of the housing 5 and the outer peripheral surface 12 of the outer ring 2 is sealed with a packing 15.

As is further apparent, the printing press roll 14 is fixed to the flange 13 of the inner race 1.

In order to center the bearing, the bolts of the mounting flange 6 are usually tightened and evenly distributed in three places in the circumferential direction before the bearing device is fixed to the housing 5. Arranging the balls 7, 8, 9, 10 is enough. The spheres 7, 8, 9, 10 are not used to transmit force, but rather the force from the press roll 14 to the flange 13 of the inner ring 1 (or clamping bolt, see lower half of FIG. 1), the inner ring. 1, transmitted to the housing 5 via the rolling element 3, the outer ring 2 and the mounting flange 6.

With the measures according to the invention described above, the bearings themselves can adopt bearing rings with coarse tolerances,
This bearing ring is only precisely centered when it is installed in a printing press. The manufacturing costs for such a bearing device are therefore considerably reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a bearing device according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 inner ring 2 outer ring 3 rolling element 4 journal (shaft element) 5 housing 6 mounting flange 7, 8 rolling element between outer ring and housing 9, 10 rolling element between inner ring and journal 15 packing 16 race on inner ring or outer ring 17 Grooves in inner or outer ring

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Andreas Klaus, Germany, 97508 Gretstadt, Kreuzstrasse 6 (72) Inventor Walter Wright Germany, 97708 Bad Bocklet, Balthasar Neumannstrasse 15 (72) Inventor Werner Palmetshofer Austria, 4400 Steil, Schlueslmeier Strasse 81 (72) Inventor Ferdinand Schweizer Austria, 3352 St. Peter, St. Michael 156 F-term (reference) 2C034 AE53 3J101 AA13 AA24 AA32 AA44 AA52 AA62 BA77 DA16 FA42 FA44 FA46 GA31

Claims (6)

[Claims] An inner ring (1), an outer ring (2), and a plurality of rolling elements (3) arranged between inner and outer rings (1) and (2). The outer ring (2) has a lateral flange (6). A journal to be supported between the outer ring 2 and the housing 5 and / or the inner ring 1 in a bearing device which rotatably supports the journal 4 as a shaft element with respect to the housing 5 such that the journal 4 is fixed to the housing 5. 4. A bearing device characterized in that centering elements in the form of rolling elements 7, 8, 9, 10 are arranged in at least three places in the circumferential direction between them. 2. A plurality of centering rolling elements 7, 8, 9, 10
The bearing device according to claim 1, wherein the bearings are uniformly distributed around the circumference of the outer ring 2 or the inner ring 1. 3. The rolling element 7, 8, 9, 10 is guided by a raceway surface 16 or a groove 17 provided on the outer peripheral surface or the inner peripheral surface of the inner ring 1 or the outer ring 2. The bearing device according to claim 1 or 2. 4. The gasket according to claim 1, wherein a packing is arranged between the outer race and the housing and / or between the inner race and the journal to be supported. The bearing device according to any one of the above. 5. The bearing device according to claim 1, wherein the rolling elements 7, 8, 9, 10 are spheres. 6. The bearing device according to claim 1, wherein the plurality of rolling elements 7, 8, 9, 10 are arranged side by side in the axial direction of the bearing device. .