JP2000074079A - Flanged rolling bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flanged rolling bearing low in working cost and favourable in productivity. SOLUTION: This rolling bearing 1 with a flange is constituted of a rolling bearing 2 and a flange member 3 to be fitted on an outside diametrical surface of the rolling bearing 2. Additionally, this rolling bearing 1 with the flange is constituted by fastening contact surfaces of the relative flange member 3 and the rolling bearing 2 in a state where the flange member 3 is fitted on the outside diametrical surface 4a of the rolling bearing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling bearing with a flange, and more particularly, to a rolling bearing with a flange formed by assembling and fixing a flange member separate from a rolling bearing to the rolling bearing.

[0002]

2. Description of the Related Art Conventionally, various types of rolling bearings have been used for mechanical devices. Generally, a rolling bearing is mounted by press-fitting between an outer peripheral surface of a shaft member and a mounting portion of a housing. That is, the inner ring of the bearing is mounted on the shaft member, and the outer ring is mounted on the mounting portion of the housing.

FIG. 6 shows a rolling bearing with a flange. In the conventional flanged rolling bearing 21, by cutting and grinding the outer diameter surface of the outer ring 24, a new outer diameter surface 24 a and a part of the outer ring outer diameter surface before processing, 23 radially protruding from the outer surface 24a
Are formed. On the other hand, the housing 30 which is a part of the mechanical device is provided with a circular hole 31 through which the shaft member 40 is inserted. When the rolling bearing 21 with a flange is press-fitted into the opening of the circular hole 31, the flange 23 abuts on the periphery of the opening of the circular hole 31, and the axial positioning of the rolling bearing 21 with the flange is performed.

[0004] When the rolling bearing 21 with a flange is used as described above, the opening of the circular hole 31 is subjected to spot facing, and as shown in FIG.
Since there is no need to form a shoulder 32 for positioning the bearing in the axial direction as shown by a two-dot chain line therein, the shape of the housing 30 can be simplified. In addition, since the counterbore processing is performed at a position shifted in the radial direction of the circular hole 31, there is no fear that the bearing 21 is fixed at a position shifted in the radial direction of the circular hole.

FIG. 7 is an enlarged view of the vicinity of the outer ring 24 in FIG. A side surface 23a of the flange 23 that contacts the housing 30 (see FIG. 6) and an outer diameter surface 24a of the outer race 24.
Are formed at the corners where
A cutout 25 is formed by cutting to avoid interference with burrs and the like generated at the peripheral edge of the opening of FIG.

[0006]

In order to uniformly press-fit the above-mentioned flanged rolling bearing 21 into the circular hole 31 of the housing, the outer diameter surface 24a of the outer race 24 and the flange 23 are required.
It was necessary to perform a grinding process on the side surface 23a contacting the housing. However, since the flange 23 protrudes from the outer diameter surface 24a, the shape of the ground surface is complicated, and it is difficult to grind these surfaces. In addition, it was necessary to perform a cutting process to form the flange 23 and the notch 25.
However, especially when the size of the bearing is small,
Processing operations such as grinding and cutting are extremely complicated.

The above-mentioned problems have caused an increase in processing cost and a decrease in productivity. The present invention has been made based on the above background,
An object of the present invention is to provide a flanged rolling bearing that can suppress processing costs and has good productivity.

[0008]

The object of the present invention is to provide a rolling bearing having an outer ring, and a metal annular flange member fitted to the outer diameter surface of the outer ring. The present invention is achieved by a rolling bearing with a flange, wherein the flange member is fixed to the rolling bearing in a state of being fitted to the radial surface.

The object of the present invention is to provide a rolling bearing having an outer ring having a groove formed on an outer diameter surface thereof, and a metallic annular flange member fitted to the outer diameter surface of the outer ring. By applying an external force to the flange member in a state where the flange member is fitted to the outer diameter surface, a deformed portion swells from the flange member into the groove, and the flange member is fixed to the rolling bearing. This is achieved by a rolling bearing with a flange.

Further, the object of the present invention is to provide a rolling bearing having an outer ring, and a metallic annular flange member fitted to the outer diameter surface of the outer ring, wherein the flange member is fitted to the outer diameter surface. By performing laser irradiation on the boundary between the flange member and the outer ring in the combined state, the flange member is fixed to the rolling bearing, thereby achieving a rolling bearing with a flange.

In this case, on the outer diameter surface of the outer ring of the rolling bearing,
It is preferable to provide a deformation suppressing means for suppressing deformation of the outer raceway when fixing the flange member and the rolling bearing.

In the thus configured rolling bearing with flange, the outer diameter surface of the outer ring and the side surface of the flange can be subjected to grinding or cutting before the flange member is fixed to the outer ring. In addition, the processing operation can be easily performed, and the processing cost can be suppressed.
Further, in the thus configured rolling bearing with flange, the flange member can be easily fixed to the rolling bearing, and the productivity is good.

Preferably, the flange member is formed by sintering or injection molding, whereby the inner surface of the flange member, which is in contact with the outer surface of the outer ring, has a preferable shape accuracy and Surface roughness can be obtained stably. The material of the flange member is aluminum, which can be moderately deformed and has appropriate hardness.
Copper or an alloy thereof is preferred.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, the rolling bearing with flange 1 includes a rolling bearing 2 and an annular flange member 3. An annular groove 4b is formed on the outer diameter surface 4a of the outer ring 4 of the rolling bearing 2. As the groove 4b, a plurality of recesses or the like formed on the outer diameter surface 4a at predetermined intervals in the circumferential direction may be employed. The groove 4b is formed by cutting or the like.

The flange member 3 is fixed on the groove 4b of the outer race. The flange member 3 is formed by sintering or injection molding, and is made of, for example, a material such as aluminum, copper, or an alloy thereof.

FIG. 2 shows a state in which the rolling bearing 2 and the flange member 3 are installed on a holding jig 15 used for fixing the rolling bearing 2 and the flange member 3. At this time, the outer diameter surface 4a of the outer race 4 and the side surface 3c (the lower surface in the figure) of the flange member 3 have already been ground. As shown in the drawing, the inner diameter surface 3b of the flange member 3 is fitted to the outer diameter surface 4a of the rolling bearing 2, and the groove 4b is covered by the inner diameter surface 3b of the flange member. The fitting at this time does not have to be a press fit. Further, the outer diameter surface 3 a of the flange member 3 is in contact with the vertical wall of the holding jig 15. Further, chamfered portions 5 are provided at both ends of the inner diameter surface 3b of the flange member 3.
a, 5b are formed.

In such a state, an annular convex portion 16 is provided at the tip.
When the press deforming jig 16 having “a” is pressed toward the flange member 3, as shown in FIG. 3, a concave deformed portion 3 d is formed on the side surface (the upper surface in the figure) of the flange member 3.

As shown in FIG. 3, the concave deformed portion 3d is formed on the side surface of the flange member 3, so that the inner surface 3b of the flange member protrudes from the portion not in contact with the outer surface 4a of the outer ring. The deformed portions 6a and 6b are formed. A convex deformed portion 6b is formed at a position adjacent to the concave deformed portion 3d, which is a portion originally formed on the chamfered portion 5b. Since the upper limit position is restricted by the base 16b of the deforming jig, the projecting tip of the convex deforming portion 6b is
Does not protrude from the side surface (upper surface in the figure).

The convex deformation portion 6 is formed in the groove 4b of the outer race.
a is bulging. Thereby, the flange member 3 is securely fixed to the outer race 4. By removing the rolling bearing 2 and the flange member 3 integrated in this manner from the holding jig 15, the rolling bearing 1 with a flange as shown in FIG. 1 can be obtained.

In the rolling bearing 1 with a flange configured as described above, the outer ring 4 and the flange member 3 are ground before the metal flange member 3 is fixed to the outer ring 4 having the groove 4b. Grinding can be easily performed. Therefore, according to such a rolling bearing 1 with a flange, the processing cost can be suppressed. In addition, since the fixing operation of the flange member 3 to the rolling bearing 2 using the holding jig 15 and the press deformation jig 16 is easy, the productivity is good.

Further, since the metal flange member 3 is formed by sintering or injection molding, the shape accuracy and surface roughness of the inner diameter surface 3b of the flange member 3 which is the contact surface with the outer ring outer diameter surface 4a. Degree is obtained stably.

Since the chamfered portion 5a is provided at one end of the inner diameter surface 3b of the flange member, there is no interference with the burrs at the opening peripheral portion of the circular hole 11 of the housing 10 shown in FIG. Further, since the chamfered portion 5b is provided at the other end of the inner diameter surface 3b of the flange member, even if the convex deformed portion 6b is formed on the chamfered portion 5b by the press deforming jig 16, the convex deformed portion 6b is formed. The protruding tip of 6 b does not protrude from the flange member 3.

When the flange member 3 is fitted to the rolling bearing 2 installed on the holding jig 15, it is not necessary to press-fit the flange member 3. Therefore, the rolling bearing of the flange member 3 using the holding jig 15 is used. The fixing operation to the fixing member 2 is very easily performed. At the time of fixing, the groove portion 4b also functions as a deformation suppressing means described in detail in a third embodiment described later.
The outer raceway 4c is not deformed.

FIG. 4 shows a second embodiment of the present invention. The rolling bearing 51 with a flange according to the present embodiment includes a general rolling bearing 52 conventionally used and an annular flange member 53 similar to the first embodiment described above.

In this embodiment, the flange member 53 is fixed to the rolling bearing 52 by laser irradiation as indicated by the two-dot chain line arrow in FIG. That is,
For example, by irradiating a laser to the boundary between the outer ring 54 and the flange member 53 in a state where the rolling bearing 52 and the flange member 53 are installed on the holding jig 15 (see FIG. 2) used in the first embodiment, the outer ring The contact surfaces of the outer diameter surface 54a of 54 and the inner diameter surface 53b of the flange member 53 are welded.

In the thus configured flanged rolling bearing 51, the rolling bearing 52 and the flange member 53 are provided.
Are welded by laser irradiation. Therefore, by adjusting the laser beam, even when the size of the rolling bearing is small, the flange member 53 can be easily and reliably fixed to the bearing.

FIG. 5 shows a third embodiment of the present invention. The rolling shaft 61 with a flange according to the present embodiment includes a rolling bearing 62.
And an annular flange member 63 similar to that of the above-described first embodiment. And the rolling bearing 62
On the outer diameter surface 64a of the outer ring 64, an annular groove 64b is formed as deformation suppressing means for suppressing deformation of the outer ring raceway 64c. The form of the deformation suppressing means is not particularly limited, and may be a plurality of recesses or the like formed on the outer diameter surface 64a at predetermined intervals in the circumferential direction.

In this embodiment, similarly to the above-described second embodiment, the flange member 63 is fixed to the rolling bearing 62 by laser irradiation as shown by a two-dot chain line arrow in FIG. That is, by irradiating the laser to the boundary between the outer ring 64 and the flange member 63, the respective contact surfaces of the outer diameter surface 64a of the outer ring 64 and the inner diameter surface 63b of the flange member 63 are welded.

The flanged rolling bearing 6 having such a configuration is described.
In 1, a groove 64 b as a deformation suppressing means is provided on a portion of the outer diameter surface 64 a of the outer ring 64 which is a contact surface with the flange member 63. Therefore, even if a slight structural change occurs in the outer ring 64 due to, for example, laser irradiation, the effect of the structural change is absorbed in the groove 64b, and the deformation of the outer ring track 64c is prevented.

The rolling bearing with a flange according to the present invention comprises:
The present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made. For example, in the embodiment described above, a ball bearing whose rolling element is a ball is described as a rolling bearing, but the present invention is not limited to a ball bearing, and may be another rolling bearing such as a roller bearing.

[0031]

As described above, the flanged rolling bearing of the present invention comprises a rolling bearing having an outer ring and a metallic annular flange member fitted to the outer diameter surface of the outer ring.
With the flange member fitted to the outer diameter surface, the flange member is fixed to the rolling bearing. Therefore, before the flange member is fixed to the outer ring, the outer diameter surface of the outer ring and the side surface of the flange can be subjected to grinding and cutting, respectively, so that the processing operation can be easily performed and the processing cost can be reduced. can do. Further, since the flange member is easily fixed to the rolling bearing, productivity is good.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a state of assembling the first embodiment of the present invention.

FIG. 3 is a diagram showing a state of assembling the first embodiment of the present invention.

FIG. 4 is a diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram showing a third embodiment of the present invention.

FIG. 6 is a view showing a conventional rolling bearing with a flange.

FIG. 7 is an enlarged view of the outer race in FIG.

[Explanation of symbols]

 1,51,61 Rolling bearing with flange 2,52,62 Rolling bearing 3,53,63 Flange member 3d Deformed deformed part 4,54,64 Outer ring 4a, 54a, 64a Outer diameter surface 4b, 64b Groove (deformation suppressing means) 4c, 64c Outer ring raceway 5a, 5b Chamfered part 6a, 6b Convex deformation part 10 Housing 11 Circular hole

Claims (1)

[Claims] 1. A rolling bearing having an outer ring, and a metal annular flange member fitted to an outer diameter surface of the outer ring, wherein the flange member is fitted to the outer diameter surface. A rolling bearing with a flange, wherein a member is fixed to the rolling bearing.