JP2003239975A - Resin bearing and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin bearing in which unevenness of bonding strength of a rear metal unit and a resin slide member is reduced and sufficient bonding strength is obtained, and also to provide a manufacturing method therefor. <P>SOLUTION: This resin bearing 5 is composed of a metallic filter 2 made of spherical particles of a metallic material and formed like a plate so as to have pores, a metallic solder invasion prevention layer 3 provided on a face on one side of the metallic filter 2 to prevent a solder material to enter, the metallic rear metal unit 4 bonded and fixed to a face of the solder invasion prevention layer 3, and the resin slide member 1 fixed to the other face of the metallic filter 2. An integral part of the metallic filter 2, the solder invasion prevention layer 3, and the rear metal unit 4 is pressurized by laminating the resin slide member 1 on a surface of the metallic filter 2 after raising temperature up to temperature exceeding a melting point of resin to impregnate resin in the metallic filter 2 for connection. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin bearing formed by fixing a back metal and a sliding surface of the metal back to a sliding surface of the metal and a method of manufacturing the same, and more particularly to a sliding bearing of a rotary machine or the like. And a method for manufacturing the same.

[0002]

2. Description of the Related Art In recent years, engineering plastic materials having low friction, high heat resistance, and high wear resistance have attracted attention as sliding materials, and particularly, polytetrafluoroethylene (hereinafter , "PTFE"), polyetheretherketone (hereinafter "PEE")
K)), glass fiber, carbon fiber, graphite, molybdenum disulfide, etc. are added to the polymer composite resin material to improve mechanical strength, sliding characteristics and abrasion resistance. , Has begun to be used in thrust and journal bearings of water turbine generators.

When such a resin-based sliding material is used for the thrust and journal bearings of a large-sized rotating machine, a heavy load is applied, and therefore a high rigidity steel backing (strength member) must be used.
The resin material is used by being integrally combined with. Therefore, if the adhesion strength between them is insufficient, the resin sliding part may peel off during operation and cause a fatal accident. Therefore, the technique of joining the resin material and the back metal is an essential issue. .
As a method of bonding the resin material to the back metal, for example, as described in Japanese Patent Application Laid-Open No. 2000-249147, a metal adjusted to have a substantially constant particle size as a bonding medium between the resin material and the back metal. It is known that a metal filter, which is made of spherical particles of a material, is formed into a plate shape so as to have pores arranged substantially uniformly, and the metal filter is impregnated with a resin so as to be adhered and fixed by an anchor effect. .

[0004]

[Patent Document 1] Japanese Patent Laid-Open No. 2000-2000
In the method described in Japanese Patent No. 249147, a metal filter brazed to a base metal is impregnated with a resin sliding material for close contact, but in brazing work, the wax easily flows downward in the gravity direction. It has been found that there is a problem in that the upper solder is reduced and the metal filter and the back metal are not partially joined. It was also found by experiments that the amount of wax in the lower part in the direction of gravity increased and penetrated into the metal filter to reach the surface impregnated with the resin, and the metal filter was partially crushed. From this result, it was confirmed that there was a problem that the penetration of wax into the metal filter had a great influence on the dispersion of the bonding strength, and the bonding strength might become insufficient.

It is an object of the present invention to provide a resin bearing and a method of manufacturing the same which can reduce the variation in the bonding strength between the backing metal and the resin-based sliding material and can obtain a sufficient bonding strength.

[0006]

[Means for Solving the Problems]

(1) In order to achieve the above object, the present invention provides a plate-shaped metal filter formed of spherical particles of a metal material and having pores, and provided on one surface of the metal filter. A brazing metal intrusion prevention layer for preventing the intrusion of a brazing material, a metal backing metal bonded and fixed to the surface of the brazing material intrusion prevention layer, and a resin-based sliding material fixed to the other surface of the metal filter. And a moving member. With such a configuration, it is possible to reduce variations in the bonding strength between the back metal and the resin-based sliding material, and to obtain sufficient bonding strength.

(2) In order to achieve the above object,
The present invention is a method of manufacturing a resin bearing, which is formed by fixing a resin-based sliding member to the sliding-side surface of a backing metal, is made of spherical particles of a metal material, and is formed into a plate shape having pores. A metal filter and a metal wax intrusion prevention layer for preventing the invasion of a brazing material are integrally formed, and the back metal is bonded to the side of the wax intrusion prevention layer to form the metal filter and the wax intrusion prevention layer. After the integral product of the back metal is heated to a temperature equal to or higher than the melting point of the resin, the resin-based sliding member is laminated on the surface of the metal filter and pressed to fix the resin to the surface of the metal filter. And a resin-based sliding member. By such a method, variation in the bonding strength between the backing metal and the resin-based sliding material can be reduced, and sufficient bonding strength can be obtained. Impregnate and bond

(3) In the above (2), preferably,
The integrated product of the metal filter and the wax intrusion prevention layer is
On the wax intrusion prevention layer, metal spherical particles of approximately the same size and particles obtained by alloying metal powder finer than the metal particles and having a low melting point by a mechanical alloying method are fused to form an uneven layer. Are formed.

(4) In the above (2), preferably,
The integrated product of the metal filter and the wax intrusion prevention layer is
The surface of the metal filter in contact with the back metal is crushed to form a wax intrusion prevention layer.

(5) In the above (2), preferably,
The integrated product of the metal filter and the wax intrusion prevention layer is
A wax intrusion prevention layer made of a metal material having a particle size smaller than that of the metal filter is formed on the surface of the metal filter that contacts the back metal.

(6) In the above item (2), preferably,
The semicircular unitary product of the metal filter, the wax intrusion prevention layer, and the back metal is fixed to a heating jig having a similar semicircular surface and having a built-in heater, and the resin is slid. After the temperature is raised to a temperature equal to or higher than the melting point of the member, the resin-based sliding member is laminated on the inner peripheral surface of the metal filter, and a pressure jig having a curvature equal to the inner diameter of the resin-based sliding member is used, The molten resin-based sliding member at the boundary is pressed to impregnate the metal filter pores and bond.

[0013]

DETAILED DESCRIPTION OF THE INVENTION A method of manufacturing a resin bearing according to a first embodiment of the present invention will be described below with reference to FIGS. First, the overall configuration of the resin bearing according to the present embodiment will be described with reference to FIG. FIG. 1 is a perspective view showing the overall configuration of a resin bearing according to the first embodiment of the present invention.

The resin bearing 5 according to this embodiment has a planar shape. Since the resin bearing 5 is formed by cutting a circular member, it has a fan shape.

The resin bearing 5 includes a back metal 4 which is a strength member,
It comprises a wax intrusion prevention layer 3, a metal filter 2, and a thermoplastic resin-based sliding member 1. Back metal 4 is SU
It is a plate-shaped member made of steel such as S304 or a metal material such as aluminum. Sliding member 1 is PE
It is a thermoplastic composition obtained by adding carbon fiber, graphite, glass fiber and the like to EK (polyether ether ketone), PTFE (polytetrafluoroethylene), PPS (polyphenylene sulfide) and PAI (polyamide imide). The metal filter 2 is made of a material such as copper, stainless steel, or bronze, and its configuration will be described later with reference to FIG. The wax intrusion prevention layer 3 uses a metal material that is compatible with the metal filter 2 and the brazing material. When a copper material is used as the metal filter 2,
A copper plate is used for the wax intrusion prevention layer 3. When a stainless material is used as the metal filter 2, a brazing material is used as the wax intrusion prevention layer 3, and when a bronze material is used as the metal filter 2, the brazing material is prevented.
A bronze plate is used.

The wax intrusion prevention layer 3 and the metal filter 2 are integrally formed by simultaneous sintering and formed into a plate shape.
Among the integrated wax intrusion prevention layer 3 and the metal filter 2, the wax intrusion prevention layer 3 and the back metal 4 are the metal filter 2
By heating and fusing through an insert material (brazing material) having a melting point lower than that, brazing and joining and fixing are performed.
The wax intrusion prevention layer 3 and the back metal 4 may be joined and fixed by diffusion joining or the like. The sliding member 1 is melted and pressure-bonded to the surface of the metal filter 2 with respect to the integrated one of the backing metal 4, the wax intrusion prevention layer 3, and the metal filter. The melt pressure bonding method of the sliding member 1 to the metal filter 2 will be described later with reference to FIG.

Next, referring to FIG. 2, a description will be given of the integrated structure of the brazing intrusion prevention layer 3 and the metal filter 2 in the resin bearing according to the present embodiment. FIG. 2 is a sectional view of the resin bearing according to the first embodiment of the present invention, in which the braze intrusion prevention layer 3 and the metal filter 2 are integrally formed. The same reference numerals as those in FIG. 1 denote the same parts.

The metal filter 2 is composed of spherical particles 2a of a metal such as copper whose particle size is adjusted to a substantially constant size, and has a plate-like shape so that pores 2b are uniformly arranged between the particles. It is molded. The size of the pores 2b is within the range of 70 to 400 mesh in order to facilitate the passage of gas. When a copper material is used as the metal filter 2, the braze intrusion prevention layer 3 is a copper plate. The wax intrusion prevention layer 3 and the metal filter 2 are integrally formed by simultaneous sintering and formed into a plate shape.

Next, the method of manufacturing the resin bearing according to the present embodiment will be described with reference to FIG. FIG. 3 is an explanatory diagram of a method of manufacturing a resin bearing according to the first embodiment of the present invention. The same reference numerals as those in FIGS. 1 and 2 indicate the same parts.

FIG. 3A shows a state where the metal filter 2 is impregnated with the resin-based sliding member 1 in the manufacturing process of the resin bearing having a planar shape. First, the metal filter 2 with the wax intrusion prevention layer 3 (copper plate) is diffusion bonded to the back metal 4,
Alternatively, they are joined and fixed by heat fusion through an insert material (wax) having a melting point lower than that of the material of the metal filter 2. Next, a bonded body of the metal filter 2 with the brazing intrusion prevention layer 3 (copper plate) and the backing metal 4 is placed on the heating jig 7a containing a plurality of cylindrical heaters 7, and the periphery of the bonded body is surrounded by a frame 8. And is heated by the heater 7. Resin-based sliding member 1
After the temperature is raised to the melting point or higher, the resin-based sliding member 1 is laminated on the metal filter 2, the boundary portion is melted, and the melted resin-based sliding member 1 is interposed via the pressurizing body 9 arranged thereon. Pressure is applied so that a uniform pressure is applied, and as shown in FIG. 3B, a part of the molten resin 1a is impregnated into the pores of the metal filter 2,
Further, pressure is applied until they are discharged to the outside, and they are joined.

It should be noted that, when heating the pressurizing body 9 side during heating, there is no particular problem, but if the melting point of the resin-based sliding member 1 is exceeded, impregnation into the pores of the metal filter 2 becomes impossible. It is safer to keep the deflection temperature under load as much as possible.

When a void is generated at the time of joining, the strength may be reduced and the reliability of the bearing may be impaired. However, the internal residual air that causes the void, the gas generated from the resin 1 due to heating, and the like may be pressed by the metal. Since the molten resin 1a is easily discharged from the pores of the filter 2 from the outside of the pores of the metal filter 2, voids are eliminated and the bonding strength can be increased.

The size (roughness) of the pores 2b of the metal filter 2 is 70 to 400 mesh using a commercially available filter element. Here, if the pores are too large, the mechanical strength is lowered, and if they are too small, sufficient degassing or impregnation cannot be performed, so 70-
The one having 400 mesh is preferable. Further, the heating temperature is set in a temperature range equal to or higher than the melting point of the resin material used. Further, the load and the pressurizing speed are determined as appropriate values by selecting the resin material and the pore size. After joining, a resin bearing having a predetermined planar shape is finished by machining.

When the brazing intrusion prevention layer 3 is bonded to the backing metal 4, when it is bonded and fixed by heat fusion through an insert material (wax) having a lower melting point than the material of the metal filter 2,
The melting point of the brazing material is 680 ° C., for example. The melting point of the resin 1 is 350 ° C., for example. When the resin bearing according to the present embodiment is used as a thrust and journal bearing of a water turbine generator, the bearing portion has a high temperature. Therefore, a brazing material having a high melting point that does not melt even when the bearing portion has a high temperature is used. ing. However, the temperature of the bearing is 200 ℃
When the resin bearing of this embodiment is used in a portion that is heated only to a certain degree, first, the surface of the metal filter 2 of the metal filter 2 with the wax intrusion prevention layer 3 (copper plate) can be heated and pressed in the same manner as in FIG. The resin 1 may be heat-fused by using an apparatus, and then the backing metal 4 may be bonded to the wax intrusion prevention layer 3 by using a brazing material having a low melting point (for example, the melting point is 230 ° C.). is there.

As described above, in this embodiment, the brazing intrusion prevention layer 3 is provided between the backing metal 4 and the metal filter 2. Therefore, the backing metal 4 and the brazing intrusion prevention layer 3 are firmly fixed by the brazing. Yes, the metal filter 2 and the resin sliding member 1
Even when closely fixing, the resin sliding member 1 can penetrate into the metal filter 2 to reduce variations in the bonding strength and improve the bonding strength.

Next, a method of manufacturing the resin bearing according to the second embodiment of the present invention will be described with reference to FIG. Figure 4
[FIG. 6] is an explanatory diagram of a method for manufacturing a resin bearing according to the second embodiment of the present invention. The same reference numerals as those in FIGS. 1 to 3 indicate the same parts.

The present embodiment is particularly suitable when the resin bearing has a large size, such as a planar resin bearing used in a large capacity turbine generator. In this embodiment, the metal filter 2 with the wax intrusion prevention layer 3 (copper plate) is attached to the back metal 4
After being fixed to
By arranging a to increase the heat capacity, the temperature rising rate is accelerated and the working time is shortened.

As described above, the resin-based sliding member 1 on the metal filter 2 is melted by the heating and pressurizing conditions, impregnated into the pores of the metal filter 2 and fusion-bonded. Therefore,
The resin-based sliding member 1 is a metal filter 2 as a joining medium.
Since they are joined and fixed by the anchor effect of (3), a robust large-sized planar resin bearing can be constructed.

As described above, also in this embodiment, the solder intrusion prevention layer 3 is provided between the backing metal 4 and the metal filter 2 to reduce the variation in the bonding strength, and
The bonding strength can be improved.

Next, a method of manufacturing the resin bearing according to the third embodiment of the present invention will be described with reference to FIGS. FIG. 5 is an enlarged side view of an essential part of a resin bearing according to a third embodiment of the present invention, and FIG. 6 is a sectional view of an essential part of a resin bearing according to the third embodiment of the present invention. Note that FIG.
The same reference numerals as those in FIG. 2 indicate the same parts.

The present embodiment is characterized by the structure of the metal filter 2A. That is, as shown in FIG. 5, as the metal particles 2c for forming the metal filter 2A, uniformly adjusted large-sized metal sphere particles 2c1 and finer and lower melting point metal powder 2c2 are used in a weight ratio. Spherical particles /
The metal powder having a low melting point is blended in a ratio of about 0.9 / 0.1, and a fine metal powder 2c having a low melting point is formed around the large metal spherical particles 2c1 by a mechanical alloying method.
2 is coated and alloyed. Copper particles are used as the metal particles 2c1. As the low melting point metal powder 2c2, for example, tin powder (melting point: about 400 ° C.) having a melting point lower than that of copper (about 800 ° C.) is used. The metal particles 2c1 have a particle diameter of, for example, 600 μm and have a low melting point.
The particle size of 100 μm or less is used, for example.

The particles 2c to which the metal powder 2c2 adheres are dispersed on the surface of the wax intrusion prevention layer 3 (copper plate) and then heated to melt the low melting point metal powder 2c2 to form the wax intrusion prevention layer 3 (copper plate). Fusing is performed to form an uneven layer. After that, the wax intrusion prevention layer 3 (copper plate) having the uneven layer formed thereon is bonded to the back metal 4. After that, as shown in FIG. 3, the backing metal 4 is heated by a heating jig to raise the temperature above the melting point of the resin-based sliding member 1, and then the resin-based sliding member 1 is laminated to form the resin-based sliding member 1. Pressurize
The uneven layer is impregnated and bonded.

In the joining method according to the present embodiment, since the adhesion is maintained by the anchor effect of the concavo-convex layer, the larger the particle diameter of the metal spherical particles 10, the higher the joining strength.

As described above, also in this embodiment, the solder intrusion prevention layer 3 is provided between the backing metal 4 and the metal filter 2 to reduce the variation in the bonding strength, and
The bonding strength can be improved.

Next, a method of manufacturing the resin bearing according to the fourth embodiment of the present invention will be described with reference to FIGS. 7 and 8. FIG. 7 is a perspective view showing the overall structure of the resin bearing according to the fourth embodiment of the present invention. FIG. 8 is an explanatory diagram of a method of manufacturing a resin bearing according to the fourth embodiment of the present invention. The same reference numerals as those in FIGS. 1 to 3 indicate the same parts.

In the present embodiment, the resin bearing 5A has an arc shape. As shown in FIG. 7, the resin bearing 5A, like the planar resin bearing 5 shown in FIG. 1, has a back metal 4 as a strength member and a metal filter 2 with a wax intrusion prevention layer 3.
And a sliding member 1 made of a thermoplastic resin.

Next, a method of manufacturing the arc-shaped resin bearing 5A will be described with reference to FIG. When connecting the back metal 4 of the arc-shaped resin bearing 5A and the resin-based sliding member 1,
A metal filter 2 provided with a wax intrusion prevention layer 3 is interposed between the backing metal 4 and the resin-based sliding member 1, and the backing metal 4,
The metal filter 2 with the wax intrusion prevention layer 3 and the resin-based sliding material 1 are each formed in an arc shape. An inner peripheral surface of the heating jig 7b is formed so as to match the outer peripheral surface of the back metal 4a, and a plurality of heaters 7 are incorporated along the inner peripheral surface.

The backing metal 4 to which the metal filter 2 is fixed via the wax intrusion prevention layer 3 is fixed to the heating jig 7b and heated,
After the temperature is raised above the melting point of the resin-based sliding material 1, the resin-based sliding material 1 is laminated, and the pressure jig 14 having the same curvature on the inner peripheral surface thereof.
Are directly pressed to uniformly press the molten resin-based sliding material 1 into the pores of the metal filter 2 to bond them. Arc-shaped resin bearing 5A that can be uniformly pressed by the pressing jig 7b
The angle α of is within the range of α ≦ 120 °, but generally the angle of the arc-shaped resin bearing is 90 degrees from the surface of the oil film pressure formation.
Used at about °. As a method of manufacturing an arc-shaped resin bearing, the equipment is simple and the cost can be reduced.

As described above, also in this embodiment, by providing the brazing intrusion prevention layer 3 between the backing metal 4 and the metal filter 2, the variation in the bonding strength is reduced, and
The bonding strength can be improved.

Next, a method of manufacturing the resin bearing according to the fifth embodiment of the present invention will be described with reference to FIG. Figure 9
[FIG. 9] is an explanatory diagram of a method for manufacturing a resin bearing according to a fifth embodiment of the present invention. The same reference numerals as those in FIGS. 1 to 3 indicate the same parts.

In this embodiment, the back metal of the journal bearing pad and the resin-based sliding member are joined together. Back metal 4,
Wax intrusion prevention layer 3, metal filter 2, resin-based sliding material 1
Are each formed in a semicircular shape. Two semi-circular objects are put together and arranged in a circular shape. The heating jig 7c is formed by combining two arcuate heating jigs 7b shown in FIG. 8 and fastening them with screws 15 to form a circular shape.

The backing metal 4 to which the metal filter 2 is fixed via the wax intrusion prevention layer 3 is fixed to the heating jig 7c and heated,
After the temperature is raised to above the melting point of the resin-based sliding material 1, the resin-based sliding material 1 is inserted and the pressure pin 1 having the taper portion 16 on the inner peripheral surface thereof.
7 is inserted and penetrated, and the taper portion 16a is gradually pressed in the horizontal direction by the taper portion 16 so that the molten resin is impregnated into the pores of the metal filter 2 to be bonded thereto, and the parallel portion 18 is formed.
Then, the inner diameter of the sliding member 1 is finished to a predetermined size. A bottom plate 19 is attached to the lower portion of the heating jig 7c to prevent the displacement of the plate during pressurization. According to this embodiment, it is possible to join a journal bearing having a two-divided cylindrical shape, and it is possible to manufacture not only a bearing for a turbine generator, but also a bearing for an electric motor, a turbine generator, or the like.

As described above, also in this embodiment, by providing the brazing intrusion prevention layer 3 between the backing metal 4 and the metal filter 2, the variation in the bonding strength is reduced, and
The bonding strength can be improved.

Next, with reference to FIG. 10, a description will be given of an integrated structure of the brazing intrusion prevention layer and the metal filter in the resin bearing according to the sixth embodiment of the present invention. FIG. 10 is a cross-sectional view of a resin bearing according to a sixth embodiment of the present invention, which is an integral structure of a brazing intrusion prevention layer and a metal filter. The same reference numerals as those in FIG. 1 denote the same parts.

In the present embodiment, as shown in FIG. 2, instead of using a separately prepared plate-shaped row intrusion prevention layer 3, a metal filter 2 is used to form the row intrusion prevention layer. There is. In this embodiment, the metal filter 2
Are composed of spherical metal particles 2a. On one surface of the metal filter 2, which is in contact with the back metal,
The crushing layer 3A is provided, and this crushing layer 3A is used as a wax intrusion prevention layer. The crushing layer 3A is formed by hitting one surface of the metal filter 2 with sandblast to crush it. At this time, in order to prevent the surface opposite to the surface in contact with the back metal (the surface to which the resin is bonded) from being crushed, this surface is placed on an elastic body such as a sponge.

In the present embodiment, since the strength of the metal filter is improved by crushing one surface of the metal filter, the curved surface shape can be easily formed and the working efficiency is improved. The back metal 4 is bonded to the side of the metal filter 2 having the mesh layer 3A on the mesh layer 3A side. After that, as shown in FIG. 3, the back metal 4 is heated by a heating jig to raise the temperature above the melting point of the resin-based sliding member 1, and then the resin-based sliding member 1 is laminated.
The resin-based sliding member 1 is pressed to impregnate the concave-convex layer and bond.

As described above, also in this embodiment, by providing the brazing intrusion prevention layer between the backing metal 4 and the metal filter 2, it is possible to reduce the variation in the bonding strength and to improve the bonding strength. it can.

Next, with reference to FIG. 11, a description will be given of the integrated structure of the braze intrusion prevention layer and the metal filter in the resin bearing according to the seventh embodiment of the present invention. FIG. 11 is a cross-sectional view of the resin bearing according to the seventh embodiment of the present invention in which the brazing intrusion prevention layer and the metal filter are integrally formed. The same reference numerals as those in FIG. 1 denote the same parts.

In the present embodiment, as shown in FIG. 2, instead of using a separately prepared plate-shaped row intrusion prevention layer 3, a metal filter 2 is used to form the row intrusion prevention layer. There is. In this embodiment, the metal filter 2
B is a two-layer structure in which the metal spheres 2a having a large particle size and the metal fluid 2d having a small particle size have different mesh roughness. In this case, the side of the metal spheres 2d having a small particle size serves as the wax intrusion prevention layer and is arranged on the side in contact with the back metal. When the particle size of the metal sphere 2a having a large particle size is 600 μm, the particle size of the metal fluid 2d having a small particle size is several tens μm. Metal particles 2
Both a and 2d are made of copper, for example.

According to this embodiment, two metal filters are used.
Since it has a layered structure, one having a smaller metal sphere particle diameter (one having a smaller mesh size) serves as a strength member, so that the strength is improved as compared with the single layer structure. The backing metal 4 is bonded to the side of the metal sphere 2d having a small particle diameter of the metal filter 2B. After that, as shown in FIG. 3, the backing metal 4 is heated by a heating jig to raise the temperature above the melting point of the resin-based sliding member 1, and then the resin-based sliding member 1 is laminated to form the resin-based sliding member 1. Is pressed to impregnate the concavo-convex layer and bond.

As described above, also in this embodiment, by providing the brazing intrusion prevention layer between the backing metal 4 and the metal filter 2, it is possible to reduce the variation in the bonding strength and improve the bonding strength. it can.

In the manufacturing method of each embodiment described above,
By using a method in which a metal filter or metal spherical particles are bonded to the back metal through a wax intrusion prevention layer, a resin-based sliding member is laminated, and the resin-based sliding member is pressed to impregnate the concavo-convex layer for bonding. Since a metal filter with a wax intrusion prevention layer or a metal sphere particle with a wax intrusion prevention layer is used,
The resin-based sliding member can be prevented from entering the joint surface with the back metal, and the work of impregnating these uneven layers with the resin-based sliding member is performed first, and then the back metal is brazed (lower than the resin-based sliding member). It becomes possible to use a manufacturing method in which a material having a melting point) is attached and bonded. In this case, the brazing material used has a lower melting point than that of the resin-based sliding member, so that the heating work can be performed easily and the work efficiency is greatly improved.

As described above, the resin bearing manufactured by the manufacturing method of each embodiment of the present invention has the brazing material invasion preventing layer formed on the surface where the metal filter and the backing metal contact each other, so that the weight of the brazing material is reduced. It can be prevented from moving in the direction and entering the metal filter. Therefore, the metal filter and the backing metal are securely fixed to each other through the brazing material intrusion prevention layer, and the resin-based sliding member can be impregnated over the entire area of the metal filter pores.
Therefore, the resin-based sliding member can be reliably fixed by the anchor effect of the metal filter as the joining medium, the adhesion strength with the backing metal is improved, and a manufacturing method with less variation in strength can be provided.

[0054]

According to the present invention, it is possible to obtain a resin bearing and a method for manufacturing the resin bearing in which variations in the bonding strength between the backing metal and the resin-based sliding material are reduced and sufficient bonding strength is obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a resin bearing according to a first embodiment of the present invention.

FIG. 2 shows a resin bearing according to a first embodiment of the present invention,
FIG. 3 is a cross-sectional view of an integrated structure of a wax intrusion prevention layer 3 and a metal filter 2.

FIG. 3 is an explanatory view of the method for manufacturing the resin bearing according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of a method of manufacturing the resin bearing according to the second embodiment of the present invention.

FIG. 5 is an enlarged side view of a main part of a resin bearing according to a third embodiment of the present invention.

FIG. 6 is a sectional view of an essential part of a resin bearing according to a third embodiment of the present invention.

FIG. 7 is a perspective view showing an overall configuration of a resin bearing according to a fourth embodiment of the present invention.

FIG. 8 is an explanatory diagram of a method of manufacturing the resin bearing according to the fourth embodiment of the present invention.

FIG. 9 is an explanatory diagram of the method of manufacturing the resin bearing according to the fifth embodiment of the present invention.

FIG. 10 is a cross-sectional view of the resin bearing according to the sixth embodiment of the present invention, showing an integrated structure of a brazing intrusion prevention layer and a metal filter.

FIG. 11 is a cross-sectional view of a resin bearing according to a seventh embodiment of the present invention in which a brazing intrusion prevention layer and a metal filter are integrated.

[Explanation of symbols] 1 ... Resin-based sliding member 2 ... Metal filter 2a, 2c, 2d ... Metal particles 2b ... Pores 3 ... Wax intrusion prevention layer 4 back metal 5, 5A ... Resin bearing 7 ... Heater 8 ... frame 9 ... Pressurized body 14 ... Pressure jig 17 ... Pressure pin

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tomoaki Inoue             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Yoichi Murai             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Makoto Henmi             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Hideki Akiba             4-13 Nakagawa Adachi-ku, Tokyo Stock Exchange             Inside Hitachi Industries (72) Inventor Shigenobu Nagasawa             4-13 Nakagawa Adachi-ku, Tokyo Stock Exchange             Inside Hitachi Industries F-term (reference) 3J011 BA07 CA05 QA05 SA05 SA06                       SC04 SC05 SE05 SE06

Claims (6)

[Claims] 1. A metal filter, which is composed of spherical particles of a metal material and is formed into a plate shape so as to have pores, and a metal wax which is provided on one surface of the metal filter and prevents a brazing material from entering. A resin bearing comprising an intrusion prevention layer, a metal backing metal bonded and fixed to the surface of the wax intrusion prevention layer, and a resin-based sliding member fixed to the other surface of the metal filter. . 2. A method of manufacturing a resin bearing, comprising a resin-based sliding member fixed to the sliding-side surface of a backing metal, the method comprising a spherical particle of a metal material and a plate-shaped molding having pores. A metal filter and a braze intrusion prevention layer made of metal for preventing invasion of the brazing material are integrally formed, and the back metal is bonded to the side of the braze intrusion prevention layer to form the metal filter and the braze intrusion prevention layer. After the temperature of the integrated product of the above and the back metal is raised to a temperature equal to or higher than the melting point of the resin, the resin-based sliding member is laminated on the surface of the metal filter and pressed to impregnate the metal filter with the resin. A method of manufacturing a resin bearing, which comprises bonding. 3. The method for manufacturing a resin bearing according to claim 2, wherein the metal filter and the wax intrusion prevention layer are integrally formed.
On the wax intrusion prevention layer, metal spherical particles of approximately the same size and particles obtained by alloying metal powder finer than the metal particles and having a low melting point by a mechanical alloying method are fused to form an uneven layer. A method for manufacturing a resin bearing, comprising: 4. The method for manufacturing a resin bearing according to claim 2, wherein the metal filter and the wax intrusion prevention layer are integrally formed.
A method for producing a resin bearing, characterized in that a surface of the metal filter in contact with the back metal is crushed to form a wax intrusion prevention layer. 5. The method for manufacturing a resin bearing according to claim 2, wherein the metal filter and the wax intrusion prevention layer are integrally formed.
A method for producing a resin bearing, characterized in that a wax intrusion prevention layer made of a metal material having a particle size smaller than that of the metal filter is formed on a surface of the metal filter that is in contact with the back metal. 6. The method of manufacturing a resin bearing according to claim 2, wherein the metal filter, the braze intrusion prevention layer, and the back metal are integrally formed into a semicircular shape, and a heater having a similar semicircular surface is provided. It is fixed to a built-in heating jig and heated, and after the temperature is raised to a temperature equal to or higher than the melting point of the resin-based sliding member, the resin-based sliding member is laminated on the inner peripheral surface of the metal filter,
It is characterized in that the molten resin-based sliding member at the boundary portion is pressed through a pressure jig having a curvature equivalent to the inner diameter of the resin-based sliding member, impregnated into the metal filter pores and bonded. And a method of manufacturing a resin bearing.