JP2002286039A - Sliding slide and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sliding slide having a self-lubricating sliding member having high durability and superior wear-resistant property in low friction. SOLUTION: One part of the sliding slide containing fluorine resin as a solid lubricating agent is a resin member for sliding comprised of normal temperature hardening type thermosetting resin containing either or both of mica with less than a designated grain size as a filler and molybdenum disulfide. The counterpart of the sliding member is a metal sliding member as the other part of the sliding slide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-lubricating sliding slide having a resin sliding member and a method for manufacturing the same.

[0002]

2. Description of the Related Art In general, a slide slide using a resin sliding member used for a machine tool or the like is provided with a resin sliding member on one of two opposing base materials (metal, resin, etc.). It is an important component for performing high-precision work processing by sliding a base material, and a resin sliding member is required to have characteristics such as mechanical strength, dimensional accuracy, and lubricity as sliding characteristics.

As a resin material for forming the resin sliding member, a thermosetting resin such as a phenol resin, a novolak resin, a polyimide resin, and an epoxy resin is often used. A cured product having various properties can be obtained by combining the two-component epoxy resin comprising the agent. These have been applied to sliding slides because of their advantages such as excellent mechanical properties, small molding shrinkage ratio and good dimensional accuracy.

In some cases, a solid lubricant such as graphite, molybdenum disulfide, or a fluororesin is added to the resin sliding material for the purpose of imparting self-lubricating properties to the resin sliding member.

Further, for the purpose of improving the wear resistance of the resin sliding member, filler additives such as glass powder, glass fiber, graphite powder and carbon fiber are added to the resin sliding material to harden the resin itself. There is also a method for improving the wear resistance.

[0006] Many of these self-lubricating slide slides are obtained by molding a resin sliding material containing the thermosetting resin, a solid lubricant, and, if necessary, the above-mentioned additive on the surface of a first base material.
Further, the resin sliding material is cured to form a resin sliding member and a metal such as quenched steel or stainless steel, or a metal having a slip surface of a lubricating hard thin film formed by plating or diamond-like coating the metal surface. They have been used in combination with sliding members.

[0007]

When a solid lubricant is added to a resin sliding member to be combined with the sliding surface of the metal sliding member of the sliding slide for the purpose of reducing the coefficient of friction, the resin caused by repeated sliding can be removed. The amount of wear of the sliding member has inevitably increased. As a countermeasure, when the additive is added to the resin sliding material, the resin itself becomes hard and the abrasion resistance is improved, but the additive increases the friction coefficient. Thus, a resin sliding member having both low friction and wear resistance could not be obtained.

An object of the present invention is to solve the above problems and to provide a sliding slide using a resin sliding member having a low coefficient of friction and high abrasion resistance, and a method of manufacturing the same.

[0009]

The sliding slide of the present invention comprises a metal sliding member in which one sliding surface of a facing substrate is made of a metal material, and the other sliding surface is made of a resin sliding material. In a slide slide provided with a resin sliding member, the resin sliding material is composed of a curable resin, a fluororesin as a solid lubricant, and one or both of molybdenum disulfide and mica. The slide slide has a self-lubricating property and is used without lubrication.

[0010] The sliding slide of the present invention comprises a metal sliding member in which one sliding surface of a facing substrate is made of a metal material and a resin sliding member in which the other sliding surface is made of a resin sliding material. The resin sliding material comprises a curable resin, a fluororesin as a solid lubricant of 40% by weight or less of the entirety, an average particle diameter of 10 μm or less, and a total of 1%.
It is characterized in that it is composed of 0% by weight or less of molybdenum disulfide and / or mica filler.

The sliding slide according to the present invention is characterized in that the curable resin is a room temperature curable thermosetting resin containing a main agent and a curing agent.

[0012] The sliding slide of the present invention is characterized in that the cold-setting thermosetting resin is an epoxy resin.

The slide slide of the present invention is characterized in that the slide slide has a self-lubricating property and is used without lubrication.

[0014] The method for producing a sliding slide of the present invention comprises the steps of using an uncured resin sliding material containing a curable resin, a fluorine resin as a solid lubricant, and one or both of molybdenum disulfide and mica. Applying to one substrate,
A step of transferring the shape of the slip surface of the second base material to the resin sliding material, and a step of curing the resin sliding material having the transferred shape to form a resin sliding member. .

When the concentration of the fluororesin as the solid lubricant is higher than 40% by weight, the mechanical strength of the resin sliding material is reduced, and the adhesion between the resin sliding material and the substrate is also reduced. Therefore, it is important to keep the fluororesin concentration at 40% by weight or less.

If the concentration of the filler composed of either or both of molybdenum disulfide and mica is 10% by weight or more, the hardness of the uncured curable resin becomes too high and the workability is reduced. At the same time, since the coefficient of friction is increased, it is important that the filler concentration is 10% by weight or less.

Further, a resin sliding member using a filler having an average particle diameter larger than necessary is expected to improve mechanical strength, but is expected to have a low friction coefficient.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. In order to form the resin sliding member 5 on the first substrate 4 of the present invention, first, the first substrate 4
An uncured resin sliding material 3 containing a curable resin, a solid lubricant, and a filler was applied to the surface of the second substrate 1, and a release agent 2 was thinly applied to the surface of the second substrate 1. Next, the resin sliding material 3 is cured in a state where the first substrate 4 and the second substrate 1 are in close contact with each other, and the shape of the slip surface of the second substrate 1 is faithfully transferred. The sliding member 5 was formed. Further, the first base material 4 and the second base material 1 were separated, and the release agent 2 on the second base material 1 was removed to form the slide slide of the present invention.

As described above, by faithfully transferring the surface shape of the second base material 1, the scraping step, which is usually performed manually, can be simplified.

By providing a spacer between the second substrate 1 and the sliding surface of the first substrate 4, the thickness of the resin sliding member 5 can be arbitrarily controlled.

The base material (curable resin) of the uncured resin sliding material 3 is a liquid material, for example, bisphenol A
Or bisphenol F-based epoxy resin or multifunctional epoxy resin.

As the curing agent, for example, a chain aliphatic amine, a cyclic amine, or a polyaminoamide can be used as an amine curing agent which is a room temperature curing type curing agent.
Further, in order to cure the uncured resin sliding material 3 of the present invention, a curing accelerator or a curing catalyst such as a tertiary amine such as DMP-30, an organic acid such as salicylic acid, or phenol may be used.

Hereinafter, models of sliding slides using the resin sliding member 5 of the present invention were prepared, and various evaluations were made.

(Evaluation 1 of Sliding Slide of the Present Invention) (Evaluation A; Measurement of Friction Coefficient of Sliding Slide) Room Temperature Curable Epoxy Resin Composition Main Agent: Bisphenol A Epoxy Resin Curing Agent; Room Temperature Curing Amine Curing Agent Solid Lubricant PTFE (polytetrafluoroethylene)
Powder Filler: Mica MK-100 (Corp Chemical Co., Ltd.) Average particle size 1-5 μm

The PTFE powder, the mica, and the base material are mixed so that the mica content is 30% by weight and the mica content is 10% by weight, and then a curing agent is added and mixed to prepare an uncured epoxy resin 3. did. An appropriate amount of the epoxy resin as the uncured resin sliding material 3 was placed on an S45C test piece base material (first base material 4) (10 mm × 10 mm × 5 mm square), and a release agent 2 was applied to the surface in advance. Sample molding jig (second substrate 1) (100 mm x 100 mm x 10 m
m plate jig). The coating film thickness is set at 1.5 mm by providing a 6.5 mm thick spacer.
mm.

After the resin is cured, the test piece base material (first base material 4)
The resin sliding member 5 formed above was removed from the sample molding jig (second base material 1).

Subsequently, an S45C flat plate coated with the resin sliding member 5 and the diamond-like carbon coating (corresponding to the second substrate 1 excluding the release agent 2) (50 mm ×
(50 mm x 5 mm). The sliding conditions are as follows: load 9.8 N, speed 6 m / min, reciprocating distance 40 mm
Was repeated 20,000 times. The friction coefficient of the sliding slide of the present invention thus prepared was measured at a load of 9.8 N,
The results obtained at a speed of 0.1 m / min and a moving distance of 20 mm are shown below. Static friction coefficient: 0.14 Dynamic friction coefficient: 0.09

As described above, the sliding slide composed of the resin sliding member 5 using the epoxy resin and the metal sliding member coated on the metal surface, which is within the scope of the present invention, has the filler added. It was found to have a sufficiently low friction property.

(Evaluation B; Evaluation of Mechanical Strength of Resin Sliding Material) An uncured resin sliding material 3 having the same composition as that of the evaluation A was prepared.
80mm by pouring into silicone mold and curing
A 4 mm x 10 mm plate material was produced. Using the prepared plate material, a bending test was performed by a method based on JIS-K7203, and a Rockwell hardness test was performed. Flexural strength: 4.4 kg / mm2 Rockwell hardness (15X scale): 68.9

As described above, it has been found that the resin sliding member using the epoxy resin within the scope of the present invention has a sufficiently low friction and a high mechanical strength.

(Evaluation C: Evaluation of abrasion of resin sliding material of sliding slide) Using the same combination of sliding slides as in Evaluation A, a load of 9.8 N and a sliding speed of 18 m / min.
The sliding test of 20 km was performed under the conditions described above, and the specific wear amount of the resin sliding member 5 was measured. The results are shown below. Specific wear rate · · · 2.1 × 10 over ⁷ (mm ^{3 /N.m)}

As described above, the resin sliding member 5 using the epoxy resin, which is within the scope of the present invention, has a sufficiently low sliding slide composed of a combination of a metal sliding member sliding portion having a metal surface coated. It was found to have friction and wear resistance.

(Evaluation 2 of the slide slide of the present invention) A composite in which PTFE was dispersed as a solid lubricant in nickel plating instead of the diamond-like carbon coated S45C flat plate used in the evaluation 1 of the slide slide of the present invention. Uncured under the same conditions as in the evaluation A of the slide slide of the present invention, except that an S45C flat plate subjected to plating was used, and molybdenum disulfide (M-5 Co., Ltd., Nichimori average particle size: 0.45 μm) was used as a filler. Was evaluated, and evaluations A, B, and C were performed. The results are shown below.

(Evaluation A) Static friction coefficient: 0.11 Dynamic friction coefficient: 0.08 (Evaluation B) Bending strength: 4.1 kg / mm2 Rockwell hardness (15X scale): 65.4 (evaluation C) ratio wear amount · · · 1.8 × 10 over ⁷ (mm ^{3 /N.m)}

As described above, the resin sliding member 5 using the epoxy resin within the scope of the present invention has a sufficiently low friction property in a sliding slide composed of a combination with a metal sliding member having a metal surface coated. It was found to have abrasion resistance.

(Evaluation 3 of the slide slide of the present invention) 1: 1 (weight) of mica used as a filler in the evaluation 1 of the slide slide of the present invention and molybdenum disulfide used in the evaluation 2 of the slide slide of the present invention. Except using a mixture,
The uncured resin sliding material 3 was adjusted under the same conditions as in the evaluation 2 of the sliding slide of the present invention, and the evaluations A, B, and C were performed.
The results are shown below.

(Evaluation A) Static friction coefficient: 0.12 Dynamic friction coefficient: 0.09 (Evaluation B) Bending strength: 4.5 kg / mm2 Rockwell hardness (15X scale): 66.1 (evaluation C) ratio wear amount · · · 2.0 × 10 over ⁷ (mm ^{3 /N.m)}

As described above, the resin sliding member 5 using an epoxy resin within the scope of the present invention has a sufficiently low friction property in a sliding slide composed of a combination with a metal sliding member having a metal surface coated. It was found to have abrasion resistance.

Comparative Example 1 An uncured resin sliding material 3 was prepared under the same conditions as in the evaluation 1 of the sliding slide of the present invention except that no filler was added, and evaluations A, B, and C were performed.
The results are shown below.

(Evaluation A) Static friction coefficient: 0.10 Dynamic friction coefficient: 0.07 (Evaluation B) Bending strength: 4.5 kg / mm ² Rockwell hardness (15 × scale): 35. 3 (evaluation C) ratio wear amount · · · 8.0 × 10 over ⁷ (mm ^{3 /N.m)}

As described above, the fat sliding material to which no filler is added has a low coefficient of friction and a high bending strength,
Since the hardness is low and the abrasion resistance is low, it has been found that the addition of the filler is indispensable for a self-lubricating sliding slide.

Comparative Example 2 An average particle diameter of 3 μm as a filler
Evaluation A was performed by adjusting the uncured resin sliding material 3 under the same conditions as in the evaluation 1 of the slide slide of the present invention except that m (graphite) (JCPB Japan Graphite Industry) was used. The results are shown below.

(Evaluation A) Static friction coefficient: 0.35 Dynamic friction coefficient: 0.26

As described above, the resin sliding member 5 using graphite as the filler instead of the mica or molybdenum disulfide of the present invention has a very high friction coefficient even if the particle size is 10 μm or less, and has a very high friction coefficient. It turned out that it cannot be used as a member. (Comparative Example 3) Uncured resin sliding material 3 was prepared under the same conditions as in Evaluation 1 of the sliding slide of the present invention, except that mica (AB32, Mica Yamaguchi) having an average particle size of 22 to 26 µm was used as a filler. Then, evaluations A, B, and C were performed. The results are shown below.

(Evaluation A) Static friction coefficient: 0.30 Dynamic friction coefficient: 0.21 (Evaluation B) Flexural strength: 5.2 Rockwell hardness (15X scale): 76.1 (Evaluation) C) ratio wear amount · · · 31 × 10 over ⁷ (mm ^{3 /N.m)}

As described above, the resin sliding member 5 using mica having a particle size larger than the range of the present invention as a filler is:
As expected, although the mechanical strength was greatly improved, it was found that the coefficient of friction was high and the wear resistance was accordingly low.

[0047]

As described above, by using the self-lubricating sliding resin member of the present invention, a highly durable sliding slide having low friction and excellent abrasion resistance can be obtained. In addition, the sliding slide of the present invention was found to have excellent mechanical strength as well as low friction and wear resistance.

FIG. 1 used for explaining the present invention
In the above, both base materials are shown as flat, but may naturally have irregularities, or may be a material that slides by fitting both base materials, especially when the surface shape of the base material is complicated. Therefore, the manufacturing is easy when molding is difficult by the conventional method.

[Brief description of the drawings]

FIG. 1 is a view showing a method of manufacturing a slide slide according to an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 second substrate 2 release agent 3 uncured cured resin material 4 first substrate 5 resin sliding member 6 transfer film 10 uncured epoxy resin 11 cured epoxy resin

Continuation of the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (reference) C08L 101/00 C08L 101/00 // B23Q 1/42 B23Q 1/26 Z F term (reference) 3C048 BB10 CC01 3J011 QA01 QA05 QA17 SC01 SC04 SE06 4J002 BD152 CD051 CD071 DG026 DJ056 FA086 FD172 FD176 GM00 GM05

Claims (6)

[Claims] 1. A sliding slide comprising a metal sliding member in which one sliding surface of a facing substrate is made of a metal material and a resin sliding member in which the other sliding surface is made of a resin sliding material. In the above, the resin sliding material is composed of a curable resin, a fluororesin as a solid lubricant, and one or both fillers of molybdenum disulfide and mica, and the sliding slide has a self-lubricating property. A sliding slide characterized by having and using without lubrication. 2. The method according to claim 1, further comprising: a metal sliding member having one sliding surface made of a metal material, and a resin sliding member having the other sliding surface made of a resin sliding material. The moving material is a curable resin, a fluororesin as a solid lubricant of 40% by weight or less of the whole, and an average particle diameter of 10 μm.
A sliding slide characterized by being composed of at least 10% by weight or less of molybdenum disulfide and / or mica as a filler. 3. The slide slide according to claim 1, wherein the curable resin is a room-temperature-curable thermosetting resin containing a main agent and a curing agent. 4. The slide slide according to claim 3, wherein the cold-setting thermosetting resin is an epoxy resin. 5. The slide slide according to claim 2, wherein the slide slide has a self-lubricating property and is used without lubrication. 6. A step of applying an uncured resin sliding material containing a curable resin, a fluororesin as a solid lubricant, and one or both of molybdenum disulfide and mica to a first base material. Transferring the shape of the slip surface of the second base material to the resin sliding material, and curing the resin sliding material having the transferred shape to form a resin sliding member. Slide slide manufacturing method.