JPH10217131A - Processing material and tool for processing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate necessity of dressing even in use for a long period of time by including pores in a processing material arranging inorganic fiber as a resin matrix and making its porosity in a specific numerical range. SOLUTION: When a processing material arranging inorganic fiber as a processing element becomes minute in porosity, a blinding phenomenon occurs, and when it becomes too porous, its strength drops and it does not function as a processing material. Consequently, it is necessary to make porosity 3-30%, and desirable to make it within a range of 3-10%. With the processing material of porosity within this range, pores work to help falling of inorganic fiber and resin even in grinding and polishing to cause blinding with the processing material pores of which are minute. Consequently, as the processing material itself continues to expose a new fiber surface of the inorganic fiber which is the processing element while sliding and the processing material which does not cause blinding is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working material and a working tool such as a polishing stick or a rotary tool made of the working material. More specifically, iron or iron alloys,
Cutting or pitting metal such as titanium or titanium alloy, aluminum or aluminum alloy, magnesium or magnesium alloy, copper or copper alloy, or non-metal such as stone, monocrystalline or polycrystalline silicon, or ceramic The present invention relates to an improvement in a processing material for forming a processing tool such as a polishing stick or a rotary tool suitable for grinding, or polishing.

[0002]

2. Description of the Related Art Conventionally, as a processing tool of this type, for example, Japanese Patent Publication No. Hei 7-102504 discloses a method in which inorganic long fibers such as alumina fibers are arranged in one direction as processing elements in a resin matrix and the whole is processed. A dense rotary tool has been proposed by the present inventor.

[0003]

At first, the present inventor thought that a tool having excellent sharpness could be constituted by forming the machining tool densely without providing pores in the machining tool. However, according to the subsequent research, even if an attempt is made to perform processing such as polishing on the workpiece using the dense processing tool, the processing can be performed in the initial stage, but the processed material immediately resembles clogging. It has been found that a phenomenon has occurred and it is not possible to actually perform the processing, and at present it has not been put to practical use. Therefore, the present invention aims at practical use of a processing tool such as a polishing stick or a rotary tool using inorganic fibers as a processing element, and a processing tool which does not require dressing even in long-term use and a processing for forming the same. The purpose is to provide materials.

[0004]

According to the present invention, there is provided a processed material comprising inorganic fibers arranged as a processing element in a resin matrix, wherein pores are included in the processed material. The porosity is 3 to 30%. The processed material according to claim 2, wherein the inorganic fiber is an inorganic fiber selected from the group consisting of alumina fiber, boron fiber, silicon carbide fiber, silicon nitride fiber, and glass fiber containing silica as a main component. It is a fiber. Further, the work material according to claim 3 is characterized in that the porosity of the pores is 3 to 10%. Further, the processed material according to claim 4 is characterized in that pores are formed in the processed material by winding or laminating a prepreg of inorganic long fiber loosely or laminating to the extent that a gap is formed. Claim 5
The prepreg may be an inorganic fiber cloth prepreg or U.S.A. D. It is a prepreg. The processing material according to claim 6 is characterized in that pores are formed in the processing material by impregnating inorganic long fibers with a resin binder and forming the filament by winding it loosely around a core material. Further, the processed material according to claim 7 is characterized in that pores are formed in the processed material by impregnating inorganic long fibers with a resin binder and press-molding with a moderate press pressure. Further, the processing material according to claim 8 is characterized in that pores are formed in the resin matrix by including hollow fine particles in the resin matrix. Further, in the processing material according to claim 9, the hollow fine particle body is a glass balloon, a shirasu balloon,
It is characterized by being at least one of a foamed plastic hollow body. Further, the working tool of the present invention is characterized in that the working material is formed in a desired shape.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The inorganic fiber is not particularly limited as long as it functions as a processing element, but may be an alumina fiber, a boron fiber, a silicon carbide fiber,
It is preferable to use silicon nitride fibers, glass fibers mainly containing silica, and the like. This inorganic fiber is as described in
It may be in the form of long fibers or short fibers as disclosed in JP-A-2504. In any case, it is preferable to use a fiber having a fiber diameter of about 3 to 40 μm.

The resin matrix as a binder for the inorganic fibers is made of a thermosetting resin such as a polyester resin, an epoxy resin, an imide resin, a bismaleimide resin, or a heat-resistant resin such as a polyetheretherketone (PEEK) resin. A thermoplastic resin or the like is used. In addition, it is preferable that these resin matrices are not densely formed but are formed into a state including pores.

The porosity in the work material is a very important requirement. If the work material is too dense, a clogging phenomenon occurs. If the work material is too porous, the strength decreases and the work material does not function. Therefore, the porosity needs to be 3 to 30%, and preferably 3 to 10%.

Means for providing pores in the processed material is optional, but for example, inorganic fiber cloth prepreg or inorganic fiber U.S.A. D. By winding or laminating a prepreg of an inorganic long fiber such as a prepreg loosely enough to form a gap, a processed material having pores can be obtained very easily. Further, a processed material having pores can be obtained very easily by impregnating the inorganic long fiber with a resin binder and forming the filament by winding the core material loosely. Also, a work material having pores can be obtained very easily by impregnating the inorganic long fiber with a resin binder and press-molding with a moderate press pressure of about 1.5 to 3.0 kgf / cm ² .

Further, if the resin matrix contains fine hollow particles such as glass balloons, shirasu balloons, and hollow plastic foams to form pores in the resin matrix, uniform and controlled porosity can be obtained. A processed material having pores can be obtained. The method of forming pores in the resin matrix by mixing the hollow fine particles in the resin matrix is a method in which grinding and polishing are performed using this processing material. It is thought that the same action and effect as those of the voids formed by the above are exhibited.

In the processed material of the present invention, the pores are
In the case of densely processed materials, it helps the inorganic fibers and resin to fall off during grinding and polishing that cause clogging, and the new material surface of the inorganic fibers, which is the processing element, is continuously exposed while the processed material itself slides constantly. It is considered to form a work material that does not cause clogging. Therefore, this processing material is an optimum processing material for polishing a curved surface which cannot be polished due to too high rigidity of a dense processing material. In addition, it is a work material most suitable for aluminum and aluminum alloys and titanium and titanium alloys, which are difficult to grind and polish due to clogging.

The working tool may be formed by cutting the work material into a desired shape, or the work material may be formed into a desired shape from the beginning.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. (Example 1) 85% by weight of alumina component, 15 of silica component
Wt% alumina fiber strand (fiber diameter 9μ)
m, 1000 filaments) is wound around a rotating drum so that the yarn feed amount is 0.7 mm and the yarn is oriented in parallel with the fiber axis direction, and is wound with a width of 250 mm and an axial length of 280 mm. A directional fiber bundle was formed. Add epoxy resin (Epicoat 828; Epicoat 1001 =
6: 4, manufactured by Yuka Shell Epoxy Co., Ltd., a curing agent prepared by adjusting boron trifluoride monoethylamine to 2.5% of the total resin amount and methyl ethyl ketone as a solvent to 35% of the total resin amount), and applying excess After squeezing the resin solution, the upper and lower portions of the fiber bundle are cut off, removed from the drum in a state where they are aligned in one direction, and dried at 95 ° C. for 1 hour with a hot air drier to obtain a desired U.S.A. D. I got a prepreg. The prepreg was cut into a length of 120 mm in the fiber axis direction and a width of 60 mm in the direction parallel to the fiber, and as shown in FIG. As shown in the figure, the rod-shaped round bar 2
Formed. Next, as shown in FIG. 3, the round bar 2 is inserted between a thin polyester film or a Teflon sheet 3 and rotated on a hot plate 4 heated to about 35 ° C. by hand from above. In the meantime, the rod was finished to have a moderately high adhesion between the prepreg layers. This is cured by heating in an oven at 160 ° C for 1 hour.
After molding, rod-shaped alumina fiber reinforced resin (ALF
An RP) polishing tool was obtained. This polishing tool had a porosity of 6.4% and a bending strength of 1450 MPa, which was sufficient for a working tool.

(Comparative Example 1) Next, as a comparison, 16 prepregs obtained by the above-mentioned method were laminated and molded by hot pressing at 160 ° C for 1 hour at 20 kgf / cm ² . D. An ALFRP plate was prepared and this U.F. D. ALFR
A polishing tool was obtained by shaving from the P plate into the same rod shape as in the above example. The porosity of this polishing tool was 1.1%, and the bending strength was 1780 MPa, which was sufficient for a working tool.

Next, when the curved surface portion of the aluminum mold was polished using the polishing tools of the above-mentioned Example 1 and Comparative Example 1, the polishing tool of Comparative Example 1 was clogged immediately after the polishing was started. However, the polishing tool of Example 1 was able to finish the polishing of the mold without causing clogging.

Example 2 First, four alumina fibers (HT-25-1K, Daimei Chemical Co., Ltd.) of 1400 Tex, in which 1,000 filaments having a diameter of 25 μm were arranged, were impregnated with a resin composition having the following composition. Epoxy resin (DER383J Dow Chemical Japan) 100 parts by weight Tetrahydromethyl phthalic anhydride (HN2200 Hitachi Chemical) 80 parts by weight Imidazole (2E4MZ-CN Shikoku Chemicals) 1 part by weight Shirasu balloon (Sankilite YO2 Sanki Kako Construction) 9 parts by weight Part Next, the alumina fiber impregnated with the resin composition was wound around a 106 mm diameter cylinder by reciprocating 10 times while being shifted to a width of 12.75 mm and wound 400 times, and then cut open in the axial direction to prepare a resin impregnated alumina fiber sheet. next,
This sheet is cut to a length of 310 mm in the fiber direction,
A positive mold heated to 120 ° C. and having a size of 00 mm × 320 mm was charged and pressurized to 100 kgf / cm ^2.
After leaving for a time, a plate having a thickness of 11.8 mm was obtained. A stick having a width of 6 mm, a thickness of 2 mm, and a length of 100 mm was cut out from this plate to obtain a polishing tool. This polishing tool had a porosity of 10.0% and a bending strength of 462 MPa, which was sufficient for a working tool.

Example 3 9 parts by weight of a shirasu balloon in the resin composition of Example 2 was replaced with microspheres (80 CA).
(Matsumoto Yushi Pharmaceutical) A polishing tool was obtained in the same manner as in Example 2 except that 6 parts by weight was used. The thickness of this one is 4.3
9 mm. This polishing tool had a porosity of 3.1% and a bending strength of 694 MPa, which was sufficient for a working tool.

Next, when the curved surface portion of the aluminum mold was polished using the polishing tools of Examples 2 and 3, the mold could be polished without clogging.

[0018]

As described above, according to the present invention, a machining tool which does not need to be dressed even for a long-term use and a work material which is easily clogged, such as aluminum and aluminum alloys or titanium and titanium alloys. And a working material for constituting the same.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a manufacturing process of a working tool of the present invention.

FIG. 2 is a perspective view showing a manufacturing process of the working tool of the present invention.

FIG. 3 is a perspective view showing a manufacturing process of the working tool of the present invention.

[Explanation of symbols]

 1 Prepreg 2 Round bar 3 Teflon sheet 4 Hot plate

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Norihito Katsuoka 2, 3585 Minamiminowa-mura, Kamiina-gun, Nagano Prefecture

Claims (10)

[Claims] 1. A processing material comprising inorganic fibers disposed as a processing element in a resin matrix, wherein the processing material has pores therein and has a porosity of 3 to 30%. 2. The method according to claim 1, wherein the inorganic fibers are selected from the group consisting of alumina fibers, boron fibers, silicon carbide fibers, silicon nitride fibers, and glass fibers containing silica as a main component. The processed material according to claim 1, wherein 3. The processed material according to claim 1, wherein the porosity of the pores is 3 to 10%. 4. The process according to claim 1, wherein pores are formed in the work material by loosely winding a prepreg of inorganic long fibers into a rod shape or laminating it in a block shape to the extent that a gap is formed. Processed material described in Crab. 5. The prepreg is made of inorganic fiber cloth prepreg or U.S.A. D. The processed material according to claim 4, which is a prepreg. 6. The process according to claim 1, wherein the inorganic long fibers are impregnated with a resin binder and are formed by filament winding in which the core material is loosely wound to form pores in the processed material. Processed material 7. The processing according to claim 1, wherein pores are formed in the processing material by impregnating the inorganic long fibers with a resin binder and press-molding the inorganic long fibers with a low press pressure. Wood. 8. The processing material according to claim 1, wherein said resin matrix contains fine hollow particles so as to form pores in said resin matrix. 9. The hollow fine particle body includes a glass balloon,
The processed material according to claim 8, wherein the processed material is at least one of a shirasu balloon and a hollow foamed plastic body. 10. A processing tool formed by forming the processing material according to claim 1 into a desired shape.