JPS62204012A - Bearing - Google Patents

Abstract

PURPOSE:To regulate movement in the radial direction and simplify manufacture by engaging each other both ends of a plate or a composite layer plate formed in the cylindrical shape of an inner ring and an outer ring, forming a joining part regulating three directional movement in an axial, diametral and circumferencial, and directions providing a locking part on the end of the joining part. CONSTITUTION:A locking groove 5 of angular section is parallelly provided on the inner circumference of an outer ring which is formed in a cylindrical shape by winding a steel plate to make contact an an joining part 4, and nitryl rubber is injected, vulcanized and shaped between an inner ring 3 and the outer ring 1 to form a cushioning material 2. And the inner ring 3 is coated with a porous sintered metal 8 on the inner circumferential surface of its base material 6 of a steel plate, synthetic resin membrane 9 which contains a filler is impregnated thereon, and formed in a cylindrical shape by bringing both ends in contact with each other at a joining part 11. Further, oil grooves 12 are provided on the inner circumferential side of the inner ring 3, locking grooves 13 of angular section are provided on the outer circumference, and end part mating faces 14, a central mating face 15, convex parts 16 and concaves 17 are provided on the joining part 4. Accordingly, circularity is good, and manufacture can be simplified without needing grinding finish processing.

Description

[Detailed Description of the Invention] [Object of the Invention] "Industrial Application Field" The present invention is directed to a cylindrical plate material such as a steel plate or a non-ferrous metal plate, or a multilayer plate in which a sliding material is integrally layered on the plate material. Regarding a bearing in which the inner and outer rings formed in the above are connected by a cushioning material, in particular, the joint parts of the inner ring and outer ring of the bearing are firmly engaged, and the joint parts can move in any direction of the axis, diameter, and circumference. This relates to a bearing that is locked in such a way that there is no damage.

``Prior Art'' Generally, a blank material of a predetermined length is formed from a multilayer plate material in which a sliding material is integrally adhered to a steel plate, and the blank material is wound into a cylindrical shape. A multilayer cylindrical wound bearing 63 as shown in FIG. 1 is already widely used in various applications.

However, the multi-layer cylindrical wound bearing 63 obtained by simply winding a blank material into a cylindrical shape has the elasticity of the material (
(springback), which allows the blank material to be in a free state after winding; specifically, after winding the blank material into a cylindrical shape using a mold, and then taking it out from the mold, the joint 64 opens. There is.

This opening of the joint 64 1) makes it difficult to insert (press-fit) the bearing 66 into the housing, and 2) after press-fitting the bearing 66 into the housing, the joint 64 often does not come into contact and the roundness of the bearing 63 deteriorates. This may cause problems such as not being able to obtain the desired results.

In addition, in recent years, there has been a movement to improve bearing performance by integrally molding (insert molding) the bearing 65 with a synthetic resin material or the like instead of press-fitting it into the housing as an inner ring to improve bearing performance. The work of integrally molding the parts in close contact with each other is very complicated, and moreover, resin often flows into the parts, resulting in problems such as failure to obtain the roundness of the bearing 63.

In view of these problems, a method for manufacturing a multilayer cylindrical bearing that prevents the joint from opening has been proposed in U.S. Patent No. 2177584.
No., U.S. Patent No. 2,283,918 and Japanese Patent Publication No. 4
It is disclosed in Japanese Patent No. 4-20681.

That is, in US Pat. No. 2,285,918, a projection 66 is formed at one end of a joint portion 65 and a groove 67 is formed at the other end as shown in FIG. 24, and when the projection 66 is fitted into the groove 67, the By winding the groove 67 into a cylindrical shape so that the ears 68, 68 provided at the open end of the groove flow into the neck of the protrusion 66, the groove 67 and the protrusion 66 engage with each other as shown in FIG. Multi-layer cylindrical winding bearing 6 with no gap
A technique for forming 3' is disclosed.

Furthermore, in Japanese Patent Publication No. 44-20681, as shown in FIG.
A groove 76 matching the shape of the protrusion 72 is formed at the other end, and the protrusion 72 is wound into a cylindrical shape so that the protrusion 72 fits into the groove 76. As shown in FIG. A technique is disclosed for forming a multilayer cylindrical bearing 631 in which the protrusions 72 mesh with each other and the joint portion 71 does not open.

The multi-layer cylindrical wound bearings 63' and 631 formed in this way are different from the conventional bearing 63 which is simply wound in a cylindrical shape, because their joints are meshed, so the axis of the joint and the spring back Since movement in two directions in the circumferential direction is restricted and it does not open, it has the advantage of improving roundness and facilitating press-fitting into a housing and easier handling when forming a composite member.

However, even in such a configuration, especially when the bearing is made into a composite member by integral molding, the joint part of the multilayer cylindrical bearing becomes thin and tightly meshes in the circumferential direction, restricting its movement. The movement in the radial direction is not restricted as it is simply engaged, and due to the pressure of the resin injected into the outer periphery of the multi-layer cylindrical bearing during integral molding, the joint part There are problems such as slight steps occur, causing variations in the roundness of the bearing, and post-work such as reaming is required in order to obtain a composite member with a bearing having a certain roundness. .

Utility Model Publication No. 44-74 was developed as a technology for regulating the diameter and axial movement of the joint of such multilayer cylindrical bearings.
No. 46, this technique provides opposing sloped surfaces on the end surfaces of the joints that mesh with each other, and restricts movement in the radial and axial ζ directions by joining the sloped surfaces. However, this method does not restrict movement in the circumferential direction due to springback (it is complicated to handle during integral molding, and it is extremely difficult to prevent resin from flowing into the joint). There is.

In addition, a technology has been proposed in which the joints of multilayer cylindrical bearings are integrated by means such as welding after winding, but this method does not allow the sliding material to change in quality due to the heat during welding, or the steel plate and the sliding material to There are problems such as peeling, so it is difficult to say that it is preferable.

In recent years, devices in which a cushioning material such as rubber is provided between the inner and outer rings formed as described above have been frequently used.

"Problem to be Solved by the Invention" When providing a cushioning material for such an inner and outer ring, it is necessary to apply adhesive to the joining surface of the inner and outer rings because the cushioning material protrudes from the joint surface when the cushioning material is injection molded under high pressure. After that, a cushioning material such as rubber is vulcanized and molded. Therefore, a process of applying adhesive to the inner and outer rings is required, and furthermore, the adhesive must be left for a long time to dry.

After the adhesive dries, rubber is used as a cushioning material and vulcanization is performed. Therefore, the application of adhesive during manufacturing poses a problem in continuous production.

The present invention provides a bearing that is made into a composite member by interposing a cushioning material between the inner and outer rings, in which the movement of the joint between the inner and outer rings can be restricted in any direction along the axis, diameter, and circumferential direction of the bearing. The object of this invention is to solve the problems of the above-mentioned conventional techniques.

[Structure of the invention]

"Means for Solving the Problems" The present invention involves forming a plate material into a cylindrical shape, or placing a multilayer plate having 13 sliding materials on the plate material on the side where the sliding material contacts a mating sliding member. In a bearing that has an outer ring and an inner ring that are formed into a cylindrical shape, the inner ring is inserted into the outer ring at a gap of 2, and a cushioning material is interposed between the inner and outer rings to connect the inner and outer rings. Both ends of the formed plate material or composite JJ plate are engaged with each other to form a joint that restricts movement in three directions: axis, diameter, and circumference, and the locking part that restricts movement in the radial direction is the joint. This bearing is characterized in that it is provided on an end face.

"Function" The joint restricts movement in three directions: axial, radial, and circumferential.

"Example" Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of the bearing of the present invention, and FIG. 2 is an enlarged plan view of section a in FIG. 1.

1 is an outer ring, 2 is a cushioning material, and 3 is an inner ring. The outer ring 1 is formed by winding a sheet metal material such as a steel plate and colliding it at the joint 4 to form a cylindrical shape.The outer ring 1 has a locking strip with a square cross section on its inner periphery so as to end in front of the joint 4 in the circumferential direction. The grooves 5, 5 are provided in parallel.

The cushioning material 2 is, for example, made by injection vulcanization molding of IJ rubber between the inner and outer rings 3 and 1.

As shown in FIG. 2, the inner ring 3 is constructed by winding a multi-layer plate in which a sliding material 7 is integrally attached to the inner circumferential surface of a steel plate base material 6 so that the sliding material 7 is on the inner surface. The ends are brought into contact and formed into a cylindrical shape.

The sliding material 7 is made by adhering a porous sintered alloy 8 to a base material 6, and impregnating the porous sintered alloy 8 with a synthetic resin coating 9 containing a filler to form a layered structure. The inner ring 3 is provided with a circumferential oil groove 12 on its inner periphery, and on its outer periphery, an engaging groove 16 with a rectangular cross section is provided at the same position as the oil groove 12 in the axial direction so as to stop before the joint 4. is provided.

The locking grooves 5° 16 provided on the inner periphery of the outer ring and the outer periphery of the inner ring prevent the cushioning material 2 from entering the grooves 5, 13 and shifting between the inner and outer rings 3, 1 and the cushioning material 2. The locking grooves 5 may be used as long as they are recesses that can lock the cushioning material 2.
, 15, and is not limited to circumferential recesses,
A large number of scattered recesses may be used, or other arrangements may be used.

The joint part 4 has an end mating surface 14 that is vertically aligned in the axial direction, and a central mating surface 15 that is arranged in the axial direction at a position offset from the end mating surface in the circumferential direction. A pair of roughly rabbit-ear shaped convex portions 16 are provided along the plate surface on both sides of the portion forming the central mating surface 15 on the protruding side, and the convex portions 16 whose tips move away from each other are provided on the other side, and a concave portion 17 that engages with the convex portions 16 is provided on the other side. be.

The concave and convex portions 16 and 17 are narrower on the tip side than on the root side of the convex portion 16, and have rounded ends. The concave and convex portions 16 and 17 on both sides are provided obliquely so that the tips of the convex portions 16 become far from each other, but they may also be arranged so that they are close to each other. A protrusion of the protrusion 19 having a semicircular cross section and a concave groove of the groove 18 are provided and mesh with each other.The protrusion 19 and the groove 18 are designed to prevent the joining part 4 from being easily dislocated in the radial direction. In general, the shape is not limited to the semicircular shape shown in the drawings, but may be a convex groove or a concave groove.For example, the joint portion 4 may be a flat surface with the end mating surface 14 inclined with respect to the radial surface.
The center mating surface 15 may be tilted in a direction opposite to the direction of inclination of the end mating surfaces 14 with respect to the radial direction.

For example, this joint 4 has a convex semicircular protrusion 19 on one end face, and a semicircular protrusion 19 as a concave groove on the other end face.
8 is provided, but in this shape, the protrusion 19 has a square cross section,
It is also possible to provide grooves into which the rectangular protrusions fit (in short, the joint surface 4 only needs to be formed with locking portions 116 on both end surfaces that engage with each other so that they cannot move in the radial direction. be.

FIG. 3 is an enlarged cross-sectional view perpendicular to the axis of the central mating surface 15 of the joint. Similar to the end mating surface 14, this mating surface also has protrusions 20,
A groove 21 is provided. Although the end surfaces of the convex portion 16 and the recessed portion 17 are assumed to be radial surfaces, both end surfaces of these can also be inclined in opposite directions with respect to a plane perpendicular to the plate surface. , 20 consecutive protrusions, grooves 1
8.21 may be a continuous concave groove.

Of course, the protrusions and grooves may generally be protrusions and grooves.

A radial joint 4 provided at the joint 4 of such an outer ring 1
In order to prevent misalignment, the end face of the joint portion 4 may be provided with only a protrusion and a groove, or the end face may be provided with only a contradictory slope, or a part of the end face may be provided with a convex part. In addition to providing the raised and grooved grooves, the other part of the end surface may be formed into an opposite sloped surface.

The above description has been made regarding the joint portion 4 of the outer ring 1, but the joint portion 11 of the inner ring 3 is also similar to the joint portion 4 of the outer ring 1, and a description thereof will be omitted.

FIG. 4 shows another embodiment of the invention. The difference from the previous embodiment is that the outer ring 1 is manufactured using the same material as the inner ring 3.
As shown in FIG. 5, which is an enlarged view of part b in FIG. 4, the outer ring 1 has a sliding material 7 provided on the outer periphery of a base material 22, and a sintered metal 8 and a synthetic resin coating 9 are laminated thereon. The outer periphery of the outer ring 1 is pressed against the base material 22 together with the sliding member 7, so that oil grooves 23 are arranged in parallel all around the circumferential direction.

The first embodiment is used so that the shaft fits into the inner ring 6 and slides on the inner periphery of the inner ring 3. The second embodiment, like the first embodiment, is used so that the shaft is slidable, and the outer ring 1 is fitted into the hole and is used so that it slides.

In the bearing of each embodiment, for example, when the shaft fitted into the inner ring 6 slides under a radial load, even if the load changes suddenly, the change in the load is alleviated by the cushioning material 2. Furthermore, even if the alignment of the mounting dimensions is not good when installing the shaft, the cushioning material 2 absorbs the misalignment.

If a force is applied to the joint 4.11 of the bearing in the direction of separating the joint 4.11 in the circumferential direction, the convex portion 16 and the concave portion 17 resist this force because they face in opposite directions. When a force is applied to the joint parts 4, 11 in the axial direction so as to pull the joint parts 4, 11 apart, the force is resisted by the engagement between the convex part 16 and the concave part 17 of the joint part. When a force is applied to pull the joint parts 4, 11 apart in the radial direction, the protrusions 19, 20 as protrusions provided on the end and center mating surfaces 14, 15, the grooves 18 as grooves,
It is resisted by each bond of 21.

Therefore, even if the above-mentioned forces and the resultant force obtained by combining each force are applied to the bearing, the inner and outer rings 6, 1 will not come off from the joint portion 11.4. Considering that in each conventional example, the joints cannot withstand at least radial force unless they are welded, the bearings are extremely strong, so special care must be taken when installing them like in the conventional examples. There is no such thing as having to pay.

Next, a method for manufacturing the bearing 10 configured as described above will be explained in detail in order of steps. The method for manufacturing the outer ring 1 will be described below, but the method for manufacturing the inner ring 3 is also substantially the same. Figure 6 shows the flow of the workpiece from the raw material until the pressing process of the outer ring 1 is completed. Straight distance 1lf
A steel plate or non-ferrous metal plate material 32 of a strike IJ block material having a width F of t) is used.

As shown in FIG. 6, grooves 5° and 5° are formed in the material 32 at positions corresponding to the engagement grooves 5, 5 located at the corresponding positions in the axial direction of the outer ring 1 from the end 24 of the material 32 in the advancing direction. The blank material 28-1 is formed by coining on the lower side and dead ends at both ends).

Next, the blank material 28-1 is fed by one stroke, and both ends of the blank material 28-1 are punched using a die and a punch based on the shape of the joint part 4 seen from the normal direction. , a blank material 28-2 is formed into a hollow shape in order to form the convex portions 16 and the concave portions 17.

Both ends of the blank material 28-2 thus completed are as shown in FIG. The side on which the recess 17 is provided is punched out in approximately the same shape as the recess 1.7, and the center mating surface 15 is similar to the end mating surface 1.
It is located further back than 4. The central mating surface 15 and the end mating surface 14 on the side where the convex portion 16 is provided are the central mating surface 1
5 protrudes from the end mating surface 14, and the central mating surface 15 on the side where the recess 17 is formed advances by the amount retracted from the end mating surface 14. Convex portion 16 before winding to become convex portion 16
The outer end surfaces 16-a of ° are parallel, and the distance 11'j j 1 between the inner sides of the roots is the green corner 171 of the recess 17.
) is equal to the distance 12. Therefore, the radius of the tip of the convex portion 16' is equal to the radius of the bottom of the concave portion 17, and the outer end surface 1 of the convex portion 16'' has a corner radius R1 between the root on the a side and the end mating surface 14.
is approximately equal to the radius R2 of the outer edge of the concave portion 17, and the convex portion 16°
The height of the joint part 1 is determined by winding the blank material 28-5, which will be described later.
When 4.15 is pressed, the convex part 16" deforms and becomes the convex part 1.
6, the convex portion 16 and the concave portion 17 are partially plastically deformed at their end faces and brought into close contact with each other, and the mating surfaces 14 and 15 are large enough to fit together.

Next, the sheet is fed one more stroke, and Va25 is formed by punching from the outer periphery side in a direction perpendicular to the feeding direction. The V-groove 25 is such that the blank material 28-5 is not deformed during the work feed stroke and is easily separated at the bending portion during the next both-end bending step. Thus, the bending process begins. The continuous process in which the outer ring 1 is formed by bending the outer ring 1 and then winding the end portion is as follows.

FIG. 8 is a vertical sectional view showing a part of the mold 26 showing the process part after the bending process, and FIG. 9 is a sectional view taken along the line A-A in FIG. An end bending die 34 having a curved surface 33 formed thereon, and a pair of end bending cams 56, 56 arranged to sandwich the die 34 in the horizontal direction and having a partially concave curved surface 35° 35 that matches the partially convex curved surface 33 of the die.
The blank material 28-6 is fixed on the die 34 with the presser guide 37, and both ends of the blank material 28-6 are sent between the bunch plates 29 and 29.
By moving the end bending cam 36 toward the die 34 with the cam 38.58 guided by the die, the blank material is bent by the partially convex curved surface 33.35 of the die and the partially concave curved surface 35.35 of the end bending cam. Partially curved surface portions 5 at both ends of 28-3
9.59 is formed to obtain a blank material 28-4 (Fig. 6,
(See Figure 9).

In Figure 9, 40.40 is the end bending cam 36°36
The guide pin 40 is supported by side plates 41, 41 fixed to the die holder 27, and there is an elastic body 42 between the side plate 41 and the other end of the guide pin 40. 42 is fitted. The guide pin 40 has an end bending cam 36 and
When the cam 38 moves upward, the end bending cam 36 is returned to its original position by the restoring force of the elastic body 42.

After that, the blank material 28-4 is sequentially sent from the pre-stroke process and is used as the blank material 28-6, as shown in FIG. 10 of the BB cross-sectional view of FIG. A portion corresponding to the joint portion 4 of the outer ring 1 is fitted, a protrusion 43 is provided on one upper surface, and a groove 4 that matches the protrusion 43 is provided on the other upper surface.
A pressing die 46 provided with stepped portions 45, 45 (see FIGS. 11 and 12) each having a groove 18 formed therein, and a cam 48 fitted into the die 46 from above to form a concave groove; A protrusion 19 is formed, and the groove 18 and the protrusion 19 constitute a locking portion 116 at the joint 4 (see FIGS. 13, 14, and 15).

In FIGS. 8 and 10, reference numeral 49 denotes a guide disposed on the pressing die 46 so as to be supported by an elastic body 50.
can enter and exit the stepped portion 45 of the pressing die,
When providing the locking part 116 on the end face, the elastic body 50 is compressed by the pressing force of the pressing punch 48 and pushed to the same level as the upper surface of the suppression die 46, and the separation of the suppression punch 48 makes the blank material 28-4 elastic. The step part 4 of the pressing die is pressed by the restoring force of the body 5o.
5 so that the uneven parts 16 and 17 are separated from each other; the blank material 28-4 can be sent to the next process.

Here, the locking portion 11 provided on the end surface of the blank material 28-4
The width, depth, or height (H) of the grooves 18 (or protrusions 19) constituting the grooves 6 are determined by the thickness of the steel plate constituting the material 32 in order to influence the strength of the joint 4, but generally When the thickness of the steel plate used is 1-310I, W=0.4-1, H=0.05-0.15
1111 is desirable (see FIG. 16).

In addition, when forming the locking part 116, the end face of the blank material 28-4 is provided with a structure that prevents the joint part 4 from opening due to the difference in the circumferential distance between the inner and outer diameters when the blank material 28-4 is wound into a cylindrical shape. It is desirable to form an inclined shape on the end surface so that the circumferential distance is longer on the outer diameter side than on the inner diameter side as shown in Fig. 16, so that the end faces are in close contact with each other, and the angle θ is determined in practice. Considering the flow of the material when winding into a cylindrical shape, it is preferable that θ=1 to 7 degrees. The inclination of the end surface of the joint portion 4 can be easily provided at the same time as the locking portion 116 by forming the step portion 45 of the pressing die at a predetermined angle.

Next, the blank material 2 with the locking part 116 formed on the end face
B-5 is a blank material 28-4 that is sent sequentially from the previous process, and has an outer diameter that forms a predetermined inner diameter as shown in Figure 17 of the cc cross-sectional view of Figure 8, and is a blank material 28-4 that is sent sequentially from the previous process. A pair of annular forming cams 5M, 5 having a core metal 51 extending between the ring finishing die and the punch, and a semicircular recess 52° 52 having an inner diameter that horizontally sandwiches the core metal 51 and forming a predetermined outer diameter. .3, the blank material 28-5 is fixed on the core metal 51 with a presser guide 54, and the annular forming cam 53 is fixed on the core metal 51 with cams 55 and 55 guided at both ends by the punch plate 29. By moving the blank material 28-5 to the 51 side, the blank material 28-5 is wound around the core metal 51 in the semicircular recess 52 of the annular forming cam, and the uneven portions 16 and 17 formed on both ends and the end surface of the blank material 28-5 are wound. A cylindrical outer ring 1 having a joint part 4 is formed by meshing the grooves 18 and the protrusions 19 so as to butt each other. At this point, the outer ring 1 is separated from the V-groove 25.

The blank material 28-5 is transformed into a cylindrical blank material 28-
6, when the concave part 17 and the convex part 16'' approach each other, the tip of the convex part 16' hits the oblique end face 17c of the concave part 17 shown in FIG. Convex portion 16 in the direction in which the tips of the portion 16 are moving away from each other.
° is curved, the convex part 161 is formed in the convex part 16, and the concave part 17
It is strongly pressed against the end face of the

In FIG. 17, 56.56 is an annular cam 5M, 5
5, one end of which is fixed to the guide pin 56.
The ring-shaped cam 53 is provided with the same function as the guide pin 40 disposed on the end bending cam 36 described above, and is supported on the side plate 41° 41 fixed to the die holder 27 in the same way as the guide pin 4°. and the side plate 41 and the guide pin 5
Similarly, elastic bodies 57 and 57 are disposed between the other end of the elastic body 6 and the other end of the elastic body 57.

Further, 58.58 is a cutout portion formed at the upper end of the annular molded cam 53 into which the presser guide 54 is inserted. This is to form a circular shape.

Next, using the blank material 28-5 sent sequentially from the previous process to the cylindrically wound bearing, as shown in FIG. 18, which is a sectional view taken along line DD in FIG. A semicircular portion 59. having an inner diameter forming a predetermined outer diameter.
59 on the upper and lower surfaces of the annular finishing die 6o and the annular finishing punch 61, and the annular finishing die 6
By pressing the bearing 1o in the vertical direction with the punch 61, the strain (stress) in the previous process is alleviated, and it is finished into a perfect cylindrical shape, and its movement in three directions of axis, diameter, and circumference is restricted. , an outer ring 1 having a closely abutted joint 4 is formed, and then the outer ring 1 sequentially sent from the previous process is discharged from the mold 26 through the discharge hole 62.

The above-mentioned series of operations are performed simultaneously in one stroke of the press, and the material to be processed is sequentially fed from the previous process to the next process to continuously obtain the outer ring 1.

As shown in FIG. 20, the outer ring shown in FIG. ,
Instead of the protrusions 19 and the grooves 18 on the central mating surface 15, opposing inclined surfaces 69 and 691 are alternately provided to form the locking portion 1.
16, the radial movement of the joint portion 4 is restricted by the engagement of the inclined surfaces 69 and 699, and the uneven portion 16.1
7 meshes to restrict movement in the axial and circumferential directions.

In this embodiment, the angle α of the inclined surfaces 69, 691 is set to α=1 from the viewpoint of workability and tight contact between the joints 11.
It is desirable that the angle is in the range of ~7 degrees.

Moreover, the formation of the inclined surfaces 69 and 69' is performed by forming the protrusions 19 and the grooves 1.
Similar to 8, it can be easily made using a pressing die 46 and a punch 48.

FIG. 21 shows another embodiment of the end bending process of the blank material 28-4, in which a partial curved surface 75 with 13 at one end having 1/4 of the circumference as shown in FIG. 22 is shown. and 1 on the other end
In order to obtain a blank material 28-4 having a partially curved surface part 74 of 1/8 of the circumference, an end bending die 34 and a cam 3 are used.
6, each partially uneven curved surface 33. This is formed by forming As. By forming such a blank material 28-4, when the blank material 28-4 is wound into a cylindrical shape using the same forming cam 55, the 1/4 circumference partial curved surface portion 7S becomes the 1/8 circumference partial curved surface portion 74. Since the core bar 51 is wound first and the partial curved surface portion 74 is wound later, the blank material 2B-4 has the same partial curved surface portions at both ends, in which both ends are wound at the same time. The locking portion 116 is engaged when the joint portions 4 butt against each other.
This is something that can be better protected from damage.

The inner ring 3 is made by almost the same process as the outer ring 1, but the difference is that the inner ring 3 has a sintered alloy 8 coated on the base material 6 on the inner surface that becomes the bearing surface, and a sintered alloy 8 coated with Teflon or the like on the sintered alloy 8. A composite material 32" equipped with a sliding material 7 provided with a synthetic resin coating 9 is used, and in the first pressing process, an oil groove 1 is formed on the bottom surface of the blank material 28-1.
A rectangular groove 121 (not shown) corresponding to No. 2 is coined by deforming the sliding member 7 and the base material 6 so as to penetrate to both sides of the blank material 28-1, and also to engage the upper surface of the blank material 28-1. A groove 1S corresponding to the stop groove 13 (not shown)
Coining is done so that it stops near both sides, and the subsequent steps are the same.

Further, as shown in the second embodiment, when the outer periphery of the outer ring 1 is used as a sliding surface, a composite material 32I (not shown) is used, and the pressing process is performed so that the sliding material 7 is on the outer periphery side. Then, a coining process corresponding to the oil groove 23 is added to the outer circumferential side in the first step. Note that it is appropriate to provide the VS25 from the base material 6 side.

In this way, the inner and outer rings 3 and 1 are simply cleaned with kerosene, etc.
A pair of inner and outer rings 3 and 1 are housed in a mold so that they are positioned in relation to each other in the product, and rubber that will become the cushioning material 2 is injected and molded.

The rubber injection pressure in this rubber molding process is 200'/cm2
．． The temperature is preferably 170°C and the vulcanization time is preferably 5 minutes.

The product is completed through the rubber molding process. Since the protrusions 19 and the grooves 18 at the abutting ends of the inner and outer rings 3 and 1 are engaged in the radial direction, and no adhesive is used,
Adhesive or rubber does not protrude from the joints 4 and 11 to the outside.

The circularity of the inner circumference of the inner ring 3 and the outer circumference of the outer ring 1 is 30 μm for a bearing 10 with an inner diameter of 22 mm, an outer diameter of 31 in, and a length of 22 u.
Therefore, there was no need for outer diameter grinding.

〔Effect of the invention〕

The present invention provides an outer ring in which a plate material is formed into a cylindrical shape, or a multilayer plate in which a sliding material is integrally layered on the plate material is formed into a cylindrical shape so that the sliding material is on the side that contacts the mating sliding member. Equipped with an inner ring,
In a bearing in which an inner ring is inserted into the outer ring at a distance, and a cushioning material is interposed between the inner and outer rings to connect the inner and outer rings, both ends of the cylindrical plates or multilayer plates of the inner and outer rings are engaged with each other. A bearing is formed by forming a joint portion that restricts movement in three directions: axial, radial, and circumferential, and a locking portion that restricts movement in the radial direction is provided on the end face of the joint. Therefore, the joint firmly resists the forces applied to the bearing in three directions: axial, radial, and circumferential. The manufacturing process is simple because there is no need to apply adhesive to the inner and outer rings in order to inject and vulcanize the rubber cushioning material, and there is no need for the workpiece to remain for a long time while the adhesive dries. Adhesive and rubber do not protrude from joints during manufacturing. Since the radial deformation of the inner and outer rings due to rubber injection vulcanization during manufacturing is suppressed by the joint, the roundness is good and no grinding is required, which is remarkable for eliminating manufacturing steps and maintaining precision. effective.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention, and Fig. 2 is a of Fig. 1.
FIG. 3 is an enlarged sectional view at right angles to the axis near the central joint in FIG. 1, FIG.
The figure is an enlarged plan view of part b in Fig. 4, Fig. 6 is a perspective view of the work flow showing the manufacturing process, Fig. 7 is a plan view showing the joining part of the blank material in the middle of the process, and Fig. 8 is the mold. Longitudinal sectional view, No. 9
The figure is a sectional view taken along line A-A in Figure 8, and Figure 10 is a cross-sectional view taken along line B-B in Figure 8.
11 and 12 are partial perspective views of the pressing die in section E and 1 of FIG. 10, and FIG. 13 is a perspective view of the workpiece whose end has been bent, and FIGS. 14 and 15. are the first
3 is an enlarged view of part G and part 5, FIG. 16 is a cross-sectional view schematically showing a cross section perpendicular to the axis at the center in the axial direction of FIG. 13, and FIG. Fig. 18 is a sectional view taken along line DD in Fig. 8, Fig. 19 is a perspective view of another embodiment in which the locking part provided at the joint is different, and Fig. 20 is the locking part of the joint in Fig. 19. FIG. 21 is a vertical cross-sectional view of the mold showing the end bending process, FIG. 22 is a vertical cross-sectional view of the workpiece in FIG. 21, and FIG. 23 is a conventional example. A perspective view, FIG. 24 is a front view of another conventional joint, and FIG. 25 is a second
FIG. 4 is a perspective view of a cylindrical bearing having the joint shown in FIG. 4, FIG. 26 is a front view of another conventional joint, and FIG. 27 is a perspective view of a cylindrical bearing having the joint shown in FIG. . 1. Outer ring 2. Cushioning material 3. Inner ring 4. Joint 5. Locking groove 6. Bus bar 7. Sliding material 8.
Porous sintered alloy 9.Synthetic resin coating 10.Bearing
11...Joint part 12...Oil groove 121--Square groove 1
5... Locking groove 14... End mating surface 15... Center mating surface 16, 16°... Convex portion 16'a... External end surface 1
7..Concave portion 171)..Corner portion 17C@Lin end face 18
...Groove 19..Protrusion 20..Groove 21..Groove 22..Base material 23..Oil groove 24..End 25.
・V groove 26・・Mold 27・・Die holder 28・
・Blank material 28-1.28-2.28-5.28
-4.28-5.28-6...Blank material 29...
Punch plate 32...Material S2"/φ composite material 5
5...Convex curved surface 64...Bending die 35...Concave curved surface 36
・・Bending cam 37・Static guide 68・・Cam 39・
・Partially curved surface part 40・・Guide pin 41・Φ side plate 4
28・Elastic body 4S・Protrusion 44・Groove 45・・
Stepped portion 46... Pressing die 48... Pressing punch 49.
・Guide 50・・Elastic body 51・・Core metal 52・・Semicircular recess 53・・Same molded cam 54・・Guide 55
・・Cam 56・・Guide pin 57・・Elastic body 58・
・Cut out part 59... Semicircular part 60... Annular finishing die
61...Circle. Finishing punch 62...Discharge hole 69,691...Slanted surface 73.74...Partially curved surface part.

Claims (1)

[Claims] 1. A plate material is formed into a cylindrical shape, or a multi-layer plate in which a sliding material is integrally layered on the plate material is formed into a cylindrical shape so that the sliding material is on the side in contact with the mating sliding member. In a bearing, which has an outer ring and an inner ring formed into cylindrical shapes, the inner ring is inserted into the outer ring at a distance, and a buffer material is interposed between the inner and outer rings to connect the inner and outer rings. Both ends of the laminates are engaged with each other to form a joint that restricts movement in three directions: axial, radial, and circumferential, and a locking portion that restricts movement in the radial direction is provided on the end surface of the joint. A bearing characterized by: 2. At the joint part, a pair of approximately rabbit ear-shaped convex portions along the board surface are formed on one of both ends of the board material or multilayer board, and the tips thereof are spaced apart from each other.
A recess that engages with the convex part is provided on the other side, and a convex and a groove that engage with each other are formed along the end surface of the joint part excluding the concave and convex part to form a locking part, and the engagement of the concave and convex parts allows the axis and The bearing according to claim 1, characterized in that a joint portion is formed that restricts movement in the circumferential direction and restricts movement in the radial direction by engagement of the protrusion and the groove. 3. At the joint part, a pair of roughly rabbit-ear-shaped convex portions along the plate surface are provided on one of both ends of the plate material or the multilayer plate, and the tips of the multilayer plate are separated from each other, and a concave portion that engages with the convex portion is provided on the other side, and the unevenness is provided. The central mating surface between the uneven parts and the end mating surfaces on both sides, except for the part, are formed with opposing inclined surfaces to form a locking part, and the movement in the axial and circumferential directions is restricted by the meshing of the uneven parts. 2. The bearing according to claim 1, wherein the joint portion is formed by joining the inclined surfaces to restrict movement in the radial direction. 4. At the joint part, a pair of approximately rabbit ear-shaped convex portions whose tips are separated from each other along the plate surface is provided on one of the end surfaces of the plate material or the multilayer material, and a concave portion that engages with the convex portion is provided on the other side, A locking part is formed by forming protrusions and grooves that fit into each other along the end face of the uneven part, and the engagement of the uneven parts forms a joint part that restricts movement in the axial, radial, and circumferential directions. A bearing according to claim 1, characterized in that: 5. The bearing according to any one of claims 1 to 4, wherein a recess for locking a cushioning material is provided on the outer periphery of the inner ring and/or the inner periphery of the outer ring. 6. The bearing according to claim 5, wherein the recesses provided on the outer periphery of the inner ring and/or the inner periphery of the outer ring for locking the buffer material are grooves in the circumferential direction. 7. The bearing according to claim 5, wherein the recesses provided for locking the cushioning material on the outer periphery of the inner ring and/or the inner periphery of the outer ring are a number of point-shaped recesses.