JPH11303856A - Bearing with flange and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability by bending or eliminating a lubricating material layer in a bend part of a bearing with flange formed of a cylinder part provided with a lubricating material layer in the inner peripheral surface thereof and a flange part formed by bending one end of the cylinder part at the bend part. SOLUTION: A bearing with flange is formed of a cylindrical cylinder part 10 and a flange part 20 formed in one end of the cylinder part 10. The one end of the cylinder part 10 is bent outward at a bend part 30 formed with a groove 12. The bend part 30 is formed with the groove 12, and the bend part 30 is formed thinner than other part so that the bend part 30 is easy to be bent. Right angle is easy to be formed by the cylinder part 10 and the flange part 20, and since the working accuracy of the flange part 20 can be improved, adjustment of a clearance between the flange part 20 and a counter part for contact after the assembling is eliminated, and while the smooth sliding is obtained, and crack and peel of the lubricating material 11 are hard to be generated in the bend part 30 so as to improve the durability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a flanged bearing and a method of manufacturing the same.

[0002]

2. Description of the Related Art FIG. 5 (a) is a side view of a conventional flanged bearing with a part thereof cut away, and FIG. 5 (b) is a view taken in the direction of arrow A in FIG.

[0003] The flanged bearing includes a cylindrical portion 110 and a flange portion 120.
It is composed of

[0004] Lubricant 111 is laminated on one side of a flat base material,
The flat base material is press-formed into a cylindrical shape so that the layer of the lubricant 111 is on the inside. Thus, the cylindrical portion 110 is formed. The cylindrical portion 110 supports a radial force.

Next, a flange 120 is formed by bending one end of the cylindrical portion 110 outward. The collar 120 supports the force in the thrust direction.

[0006]

When the collar 120 is formed by bending, a compressive stress is applied inside the bent portion 130.
A tensile stress is generated on the outside. Bend forming is cylindrical part 1
10 is forcibly deformed.
The thickness of the cylindrical part 110 and the flange part 120 vary.
And the high accuracy of the flatness of the collar 120 cannot be ensured. The lubricant 11 laminated on the base material
(1) A decrease in adhesion to the base material, peeling of the layer of the lubricant 111, cracks (cracks), etc. occur in the bent portion, and when used as a sliding portion, they do not come into surface contact, point contact, and line contact. As a result, the surface pressure increases due to the decrease in the contact area, and looseness, abnormal noise, abnormal wear, and seizure occur due to poor adjustment of the gap and the preload, resulting in low durability.

The present invention has been made in view of such circumstances, and an object thereof is to provide a durable flanged bearing and a method of manufacturing the same.

[0008]

According to a first aspect of the present invention, there is provided a method of manufacturing a flanged bearing, comprising the steps of: providing a cylindrical portion having an inner peripheral surface provided with a lubricant layer; A method of manufacturing a flanged bearing including a flange formed by bending one end at a bent portion, wherein the lubricant layer at the bent portion is removed.

Since the lubricant layer at the bent portion is removed, there is no portion that may cause cracking or peeling, and cracking or peeling is prevented.

According to a second aspect of the present invention, there is provided a method of manufacturing a flanged bearing, wherein a cylindrical portion having an inner peripheral surface provided with a lubricant layer is bent at one end of the cylindrical portion via a bent portion. In a method for manufacturing a flanged bearing constituted by a flange portion, a groove is formed in the bent portion, and then the flange portion is bent and formed.

Since a groove is formed in the bent portion and then the brim portion is formed by bending, the deformed portion becomes thin, and the brim portion can be easily bent. Processing accuracy can be improved.

According to a third aspect of the present invention, there is provided a method for manufacturing a flanged bearing, wherein a cylindrical portion having an inner peripheral surface provided with a lubricant layer is bent and formed at one end of the cylindrical portion via a bent portion. A method for manufacturing a flanged bearing comprising a flange portion is characterized in that small holes are formed at predetermined intervals in the bent portion, and then the flange portion is bent and formed.

Since a small hole is formed at a predetermined interval in the bent portion, and then the brim portion is formed by bending, the deformed portion is reduced, and the brim portion can be easily bent. The processing accuracy such as the perpendicularity to the part can be improved.

According to a fourth aspect of the present invention, there is provided a method of manufacturing a flanged bearing according to the second or third aspect, further comprising a step of removing a lubricant layer at the bent portion.

[0015] The collar part can be bent more easily,
Processing accuracy such as the perpendicularity between the cylindrical portion and the flange portion can be improved.

According to a fifth aspect of the present invention, there is provided a flanged bearing manufactured by the manufacturing method of the first, second, third or fourth aspect.

Since the machining accuracy such as the perpendicularity between the cylindrical portion and the collar portion is high, smooth sliding of the collar portion can be obtained.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1A is a side view showing a part of a flanged bearing according to a first embodiment of the present invention, which is cut away.
(B) is a view taken in the direction of arrow B in FIG. 1 (a), and FIGS.
(D) is a figure explaining the manufacturing process of a flanged bearing.

The flanged bearing comprises a cylindrical portion 10 having a cylindrical shape and a flange portion 20 formed at one end of the cylindrical portion 10.

The flanged bearing is manufactured in the following steps.

The flat base material 5 having one surface coated with the lubricant 11 is press-cut to a predetermined length (see FIG. 2A).

A groove 12 having a predetermined depth is formed in the longitudinal direction of the flat substrate 5 on the surface on which the lubricant 11 is not applied (FIG. 2).
(B)).

This flat base material is bent so that the lubricant 11 is on the inside to form the cylindrical portion 10 (see FIG. 2C).

One end of the cylindrical portion 10 is bent outward at a bent portion 30 in which the groove 12 is formed to form a flange portion 20 (see FIG. 2D).

According to the first embodiment, the following effects are exhibited.

Since the groove 30 is formed in the bent portion 30 and the bent portion 30 is thinner than other portions and is easily bent, the collar portion 20 can be formed by, for example, one press (improvement in formability). ), The manufacturing cost can be reduced.

Since the squareness between the cylindrical portion 10 and the collar portion 20 can be easily set, and the processing accuracy of the collar portion 20 can be increased, it is not necessary to adjust the clearance between the collar portion 20 and the contact partner after assembly (assembly). And smooth sliding can be obtained.

Since the lubricating material 11 is hardly cracked or peeled off at the bent portion 30, the durability is improved.

The lubricating material 11 which cannot be used conventionally and has a smaller extension than the flat substrate 5 can be used, and the types of the lubricating material 11 which can be used are increased.

In the above embodiment, the groove 12 is formed by the lubricant 1
1 was formed on the surface on which no lubricant was applied.
The groove 12 may be formed on the surface on which 1 is applied.

FIG. 3A is a side view showing a part of a flanged bearing according to a second embodiment of the present invention, which is cut away.
FIG. 3B is a view taken in the direction of the arrow C in FIG. 3A, and the same portions as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

This embodiment is different from the first embodiment in that a plurality of long holes (small holes) 13 are formed at predetermined intervals in the bent portion 30.

The method of manufacturing the flanged bearing is different from the manufacturing method of the first embodiment only in that a step of forming a plurality of long holes 13 is performed instead of the step of forming the groove 12. This is the same as the first embodiment.

According to the second embodiment, the following effects can be exhibited in addition to the effects of the first embodiment.

Since the bent portion 30 is easily deformed and bent due to the elongated hole 13 formed in the bent portion 30, the flange portion 20 can be easily formed at one end of the cylindrical portion 10 by, for example, one press. (Improvement of moldability), and a reduction in manufacturing cost can be achieved.

FIG. 4A is a side view showing a part of a flanged bearing according to a third embodiment of the present invention, which is cut away.
FIG. 4B is a view taken in the direction of arrow D in FIG.

In this embodiment, the lubricating material 11
Is different from that of the first embodiment in that a portion 14 having a predetermined width is removed.

The manufacturing method of the first embodiment differs from the manufacturing method of the first embodiment in that the step of forming the portion 14 by removing the lubricant 11 of the bent portion 30 is performed instead of the step of forming the groove 12. The other points are the same as those of the first embodiment.

According to this embodiment, the same effects as in the first embodiment can be exhibited.

The removal of the lubricating material 11 from the bent portion 30 does not need to be performed at the portion 14 having a predetermined width as shown in the figure, but may be achieved by forming only one line with a cutter or the like.

Further, the step of removing the lubricating material 11 from the bent portion 30 may be performed after the flange portion 20 is formed by bending.

In the above-described embodiment, the collar portion 20 is formed after the cylindrical portion 10 is formed. However, the cylindrical portion 20 may be formed after the collar portion 20 is formed.

Further, a combination of the first embodiment and the second embodiment (groove + long hole), a combination of the first embodiment and the third embodiment (removal of the groove + lubricant), a second embodiment Combination of form and third embodiment (removal of slot + lubricant) and combination of first embodiment, second embodiment and third embodiment (recess of slot + slot + removal of lubricant) ).

[0045]

As described above, according to the method for manufacturing a flanged bearing according to the first aspect of the present invention, cracks and peeling of the lubricating material are less likely to occur at the bent portion, so that the durability is improved. And the types of lubricants that can be used are increased.

According to the method for manufacturing a flanged bearing according to the second to fourth aspects of the present invention, in addition to the effect of the first aspect, the collar can be easily formed, so that the formability is improved and the manufacturing is improved. Cost can be reduced. In addition, since the processing accuracy of the collar portion can be increased, clearance adjustment is not required, and assemblability is improved, and smooth sliding can be obtained.

According to the flanged bearing according to the fifth aspect of the present invention, since the processing accuracy of the collar portion is high, smooth sliding of the collar portion can be obtained.

[Brief description of the drawings]

FIG. 1 (a) is a side view showing a part of a flanged bearing according to a first embodiment of the present invention in a cutaway manner, and FIG. 1 (b) is a view taken in the direction of arrow B in FIG. 1 (a). It is.

FIGS. 2 (a) to 2 (d) are views illustrating the shape of a flanged bearing in a manufacturing process.

FIG. 3A is a side view showing a part of a flanged bearing according to a second embodiment of the present invention, and FIG. 3B is a view taken in the direction of arrow C in FIG. 3A. It is.

4 (a) is a side view showing a part of a flanged bearing according to a third embodiment of the present invention, and FIG. 4 (b) is a view taken in the direction of arrow D in FIG. 4 (a). It is.

FIG. 5 (a) is a side view showing a part of a conventional flanged bearing cut away, and FIG. 5 (b) is a view taken in the direction of arrow A in FIG. 5 (a).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cylindrical part 11 Lubricant 12 Groove 13 Slot (small hole) 14 Part 20 Collar

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ichi Tabata 39, Higashihara, Chiyo, Odai-gun, Osato-gun, Saitama Prefecture Inside the Xexel Konan Plant

Claims (5)

[Claims] 1. A cylindrical portion having an inner peripheral surface provided with a lubricant layer,
A method for manufacturing a flanged bearing comprising a flange formed by bending one end of a cylindrical portion at a bent portion, wherein the lubricating material layer at the bent portion is removed. Manufacturing method. 2. A cylindrical portion having an inner peripheral surface provided with a lubricant layer,
In a method for manufacturing a flanged bearing comprising a flange formed at one end of the cylindrical portion via a bent portion, a groove is formed at the bent portion, and then the flange is bent. A method for manufacturing a flanged bearing. 3. A cylindrical portion having an inner peripheral surface provided with a lubricant layer,
In a method of manufacturing a flanged bearing comprising a flange formed at one end of the cylindrical portion through a bent portion, forming small holes at predetermined intervals in the bent portion, A method for manufacturing a flanged bearing, wherein the flange is formed by bending. 4. The method according to claim 2, further comprising the step of removing a lubricant layer at the bent portion. 5. A flanged bearing manufactured by the manufacturing method according to claim 1, 2, 3, or 4.