JPS63120917A - Sliding member and its manufacture - Google Patents

Abstract

PURPOSE:To make it possible to display sliding characteristics suitable for high surface pressure at a low expense by drilling small holes on a highly hard material by means of a laser beam or an electron beam, and making said small holes keep a solid lubricant or other lubricant such as resin or the like. CONSTITUTION:Since a small hole is drilled by means of a laser beam or an electron beam, the peripheral pert 2a of the hole opening to the surface of a base material 1 has a small radius to form a gently sloping shape without a burr caused by machine-drilling. A hole 2 has a notched inner surface as shown in a figure 2b, and a solid lubricant and resin therefore adhere closely to the notched inner surface without slipping out of the hole 2. Even when highly hard steel plate or ceramics are used for the base material, the small holes can be drilled very effectively and precisely at any pitches. Thus a sliding member can be produced at a low expense by a simple method.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sliding material used for the sliding surface of a sliding bearing, for example, and a method for manufacturing the same.

(Prior Art) Conventionally, as this type of sliding material, resin-coated sliding materials or materials in which a solid lubricant is embedded in a bronze-based base material have been used.

In order to manufacture such a sliding material, a hole is usually made in a bronze base material using a drill, and a solid lubricant is embedded in the hole.

(Problems to be Solved by the Invention) In the above conventional sliding materials, the base material is relatively soft and the allowable surface pressure is about 1000 kir/cd at most.

In addition to being unable to withstand high surface pressure, it is impossible to drill holes in hard base materials because the holes for embedding the solid lubricant must be drilled.

Furthermore, each hole must be drilled individually, which is very time consuming and requires a great deal of time to change and adjust the pitch of the holes. In addition, drilling with a drill has a limit to the ability to make small holes, and there are manufacturing problems such as burrs appearing around the holes (edges) formed on the surface of the base material, which also increases costs.

An object of the present invention is to solve the above-mentioned problems.

(Means and effects for solving the problems) The present invention has been made in view of the above points, and consists of drilling small holes in a base material made of a hard material such as a steel plate or ceramic using a laser or an electron beam. A sliding material is formed by impregnating the small holes with a solid lubricant or resin, and the sliding material can sufficiently withstand high surface pressure and have excellent sliding characteristics.

In addition, the above-mentioned small holes can be drilled quickly and easily at any pitch using a laser or electron beam, and there is no burr around the opening on the base material surface, producing high-quality sliding materials extremely efficiently. can do.

(Example) Examples of the present invention will be described below with reference to FIGS.

In the figure, reference numeral 1 denotes the base material, which is made of a hard material such as a steel plate or ceramics. Then, as shown in Fig. 1, a small hole with a diameter of 0.05 to 5 m and a depth of o, i to 2 fi is made in the base material 1 using a laser or an electron beam, as shown in Fig. 2. As shown, graphite 1M-S t is placed in the small hole.
It is filled with a solid lubricant such as W S x or a resin such as PTFE (polyethylene terephthalate), polyacetal, or nylon.

The lubricant embedding method is 1.For example, in the case of PTFE, a roll impregnation method is used, and in the case of solid lubricants such as graphite and MoS*, it is mixed with a thermosetting resin such as phenol and made into a clay-like form. It is impregnated into the hole using the roll impregnation method.

Furthermore, when a small hole is made using a laser or an electron beam, the shape of the hole is rounded and gentle in the peripheral part 2a of the hole opened on the surface of the base material 1, as shown in an enlarged view in FIG. Therefore, unlike holes made with conventional drills, burrs do not appear in the surrounding areas.

In addition, the shape of the hole 2 drilled in the base material is a jagged shape (not a straight line) as shown in 2b, so the solid lubricant or resin embedded in this hole 2 does not meet the above-mentioned jagged surface. By making a close contact, it is firmly fixed in the hole, so it will not slip out.

Furthermore, since a laser or an electron beam is used to make the small holes, the holes can be easily drilled even if the base material is hard, and fine holes can be quickly drilled at any pitch. (For example 100
7 seconds, pitch 1B, 100 X in 100 seconds
Can drill 100 holes. ) The sliding material manufactured in this way has an embedded lubricant that covers the sliding surface during sliding, and exhibits good sliding characteristics even without oil or fat. High strength 2: Since high hardness steel plate, ceramic, and glue are used, this base material supports the mating material, so it can withstand higher surface pressure than conventional products.

(Effects of the Invention) The present invention is made as detailed above, in other words, a high-strength, high-hardness steel plate or ceramic is used as the base material, and fine holes are made in the base material using a laser or an electron beam. Since the sliding material was formed by embedding a solid lubricant in the
Small holes of any pitch can be drilled into a hard base material extremely efficiently and with high precision, and the solid lubricant embedded in the small holes is tightly adhered, so it will not come off during sliding.
A sliding material that can withstand much higher surface pressure than conventional materials can be obtained.

As described above, according to the present invention, a sliding material with excellent sliding properties can be provided at low cost using a simple method.

[Brief explanation of the drawing]

FIGS. 1 and 2 schematically show the first and second steps of the manufacturing process of the sliding material of the present invention, respectively;
The figure is an explanatory diagram showing an enlarged view of section P in FIG. 1. 1... Base material, 2... Small hole, 3... Lubricant.

Claims (2)

[Claims] (1) Sliding material made by drilling small holes in a base material made of a high-hardness material such as a steel plate or ceramic using a laser or electron beam, and filling the small holes with a lubricant such as solid lubricant or resin. . (2) A method for producing a sliding material, characterized in that a small hole is formed in a base material of a high-hardness material using a laser or an electron beam, and then a solid lubricant or resin is embedded in the small hole.