WO1987004652A1

WO1987004652A1 - Constituent elements for ultra-abrasive-grain grinding tool and grinding tool employing said elements

Info

Publication number: WO1987004652A1
Application number: PCT/JP1987/000084
Authority: WO
Inventors: Yukio Endo; Kazuyuki Mitani; Tadashi Matsuoka; Masayoshi Ueki; Norio Ootake
Original assignee: Koyo-Sha Co., Ltd.; Toshiba Tungaloy Co., Ltd.; Science And Creative Co., Ltd.
Priority date: 1986-02-10
Filing date: 1987-02-10
Publication date: 1987-08-13
Also published as: DE3790060C2; DE3790060T

Abstract

Constituent elements for an ultra-abrasive-grain grinding tool and a grinding tool composed of said elements, wherein the constituent elements are formed by sticking abrasive grains (3) containing ultra-abrasive grains such as diamond etc. on a network base material (1) with resin adhesive (4) in such a manner that openings of the network are left exposed, the tool being firmed using said constituent elements. Accordingly, a projection of cutting edge of abrasive grains is satisfactory, allowing coolants to be supplied sufficiently and the possibility of clogging to be reduced, resulting in a good cutting quality and an excellent durability thereof.

Description

Akira TO Super-abrasive grinding tool components and grinding tool technology field The present invention efficiently grinds difficult-to-grind materials such as various ceramics, cemented carbide, heat-resistant steel, and high-speed steel. The present invention relates to a component of a superabrasive grinding tool such as a superabrasive grinding wheel and a grinding tool using the component. Background technology Conventionally, difficult-to-grind materials such as various ceramics, cemented carbide, heat-resistant steel, high-speed steel, etc. are cut, ground or polished. A super-abrasive grinding tool using a super-abrasive such as diamond or cubic boron nitride is known as a grinding tool for refining.

For example, a super-abrasive grinding wheel, which is one of such super-abrasive grinding tools and is used for surface grinding, outer peripheral grinding, inner surface grinding, etc. of the above-mentioned difficult-to-machine materials, is a metal. JIS with a superabrasive layer provided by lubrication, resin bonding, vitrification bonding, or electrodeposition

B 41 31 (diamonds and cubic boron nitride wheels) are shown in different types according to their shape: flat, square and force. Various shapes such as top and segment types and shafts are known.

However, in these superabrasive grain grinding methods, except for the electrodeposited grindstone, the abrasive grains are structurally embedded in the pod, and the grinding is performed. There is almost no protrusion of the grain cutting blade, and it is necessary to frequently stand out when using it. In addition, the super-abrasive grinding wheels of Metalpon K and Resinpond which are used for ^ have many pores and do not have so-called chip pockets. In addition, the discharge of chips and the supply of coolant are not sufficient, and the deterioration of the abrasive grains and the pond due to the occurrence of eyesight and ripening causes the sharpness of the sharpness. There was a drawback that caused a decline. In addition, the above superabrasive grinding wheel has a large rigidity although there is a slight difference depending on the material of the bond layer and the material of the metal base supporting the abrasive layer. This is generally the case. Grinding wheels with high elasticity usually have good grinding accuracy (although good grinding accuracy) causes chipping and micro-cracks on the added surface. In addition, there are many cases in which the work surface quality is impaired and the work becomes difficult, such as the grinding of hard and brittle materials such as ceramics. In all cases it is remarkable.

On the other hand, whetstones with f¾% have a slightly better sharpness due to moderate control of the protrusion of the abrasive cutting edge from the pon layer, but the abrasive layer Since the surface is a single layer, as the abrasive grains at the tip end are consumed and the base is exposed, the grinding resistance increases, leading to a sharp decrease in sharpness, making it impossible to grind. Life in a relatively short time There were drawbacks.

In addition, as a chip for cutting, for example, a slot-away chip, such as cemented carbide, cermet, etc. Materials such as silicon, aluminum, aluminum nitride, and silicon nitride. t_ These slack chips are used for cutting and cutting of barb, special m, various metals, etc., but they are made of aluminum, zirconia, silicon carbide, The cutting and cutting of so-called fine ceramics sintered bodies, such as silicon nitride, by these throw-away chips is not possible. It is difficult, and at present, in order to process them, the super-abrasive grinding wheels using diamond abrasives or the like are widely and generally used. However, such a conventional superabrasive grinding wheel is, as described above, a metal-pound resin-bond, a bit-feed-bond or an electric It depends on how you wear it, and has the drawbacks mentioned above. DISCLOSURE OF THE INVENTION An object of the present invention is to provide the above-mentioned disadvantages of a grinding tool such as a conventional superabrasive grinding wheel, that is, an abrasive surface with little protrusion of the abrasive grains. The contact area between the workpiece and the workpiece is large, the coolant is not sufficiently supplied to the workpiece, and the sharpness is reduced due to the deterioration of the abrasive grains and the phenomenon of blinding. It solves the shortcomings such as lack of sharpness, reduced sharpness, and reduced sharpness due to exposure of the metal base, resulting in high abrasive grain density and processing. The object layer is It works constantly and intermittently, can supply the coolant sufficiently, and can constitute a new superabrasive grinding tool with good sharpness and good sustainability. It is an object of the present invention to provide a component and a polishing tool configured by using the component.

A first aspect of the present invention is to provide a nozzle, a NAND source, a core drill, a force roll of various shapes, a polishing sleep, and a flip wheel. A super-abrasive grinding tool component that is a constituent unit of a super-abrasive grinding tool such as a tool, a hole cutter, and a grinding wheel of various shapes, and is made of an inorganic fiber or an organic synthetic fiber. A super-abrasive such as diamond is left on the front and back surfaces of the mesh base material so that the opening of the mesh remains, and the abrasive is firmly bonded and fixed with resin adhesive. The feature is that a grain fixing part is provided. That is, in the first invention, the mesh base material is made of an inorganic fiber or an organic synthetic fiber, the mesh size is 0.4 to 1.5 mm, and the density is 1%. It is set to 0-30 mesh. Further, the abrasive grain fixing portion contains at least 20% by weight of superabrasive grains, and is bonded and fixed with a resin-based adhesive so that the superabrasive grains form the yarn of the network base material. At the same time, the mesh is less than 75% covered.

In addition, the above-mentioned "The mesh hole covering is not more than 7596" means, in short, the synthesis of the covering area of each mesh at the abrasive grain fixing part. Means less than 75% of the total area of each of these meshes.

If the mesh substrate is, for example, polygonal, If one side or adjacent two sides of the polygon are curved, or if one side of the polygon is a curve, the above-mentioned fixed parts shall be formed on both sides of the appropriate paddle from the side forming the curve This is what we did.

In order to achieve the above object, a superabrasive grinding tool according to a second aspect of the present invention is a superabrasive grain grinding tool component according to the first aspect, wherein the mesh base material is An annular base material having at least an outer peripheral end or an inner peripheral end on which the abrasive grain fixing portion is formed for one layer, or one or more components It is characterized by being a superabrasive grinding wheel composed of layered layers.

When the mesh base material has one layer or a small number of layers, it is used as a grinding wheel mainly used for cutting, and is formed by laminating a plurality of layers. At the time, it is used as a flat, flat, cup, ring, offset, etc. grinding wheel.

In order to achieve the above object, a superabrasive grinding tool according to a third aspect of the present invention is a superabrasive grinding tool component according to the first aspect of the present invention, wherein the mesh base material has a large number. A plurality of structural elements, each having a rectangular plate shape or a circular plate shape and having at least a part of the surface on which the abrasive grain fixing portion is formed, are integrally formed in a laminated state. It is characterized by being a super-abrasive grinding chip.

The superabrasive grinding tool component according to the first aspect of the present invention is a mode in which a superabrasive is fixed by using a mesh base material as a supporting base material and leaving an opening of the mesh. Therefore, many fine cutting edges of super-abrasive grains protrude from the adhesive layer, and then: sufficiently supply the coolant through the opened mesh. This ensures that the chips are discharged smoothly, There is no noticeable. Also, depending on the balance, such as the type of base material, the type and amount of adhesive applied, and the coating density of abrasive grains, a certain degree of stiffness can be achieved. It has the flexibility of a certain degree and has a certain cushioning effect on the work piece, unlike conventional tools, even though it has high flexibility. This makes it possible to construct a tool that can work smoothly.

Further, the superabrasive grinding tools according to the second and third aspects of the present invention are configured using the components according to the first aspect of the present invention having the above-described effects. As a result, the cutting edge of the abrasive grains protrudes sufficiently to supply a sufficient amount of cleansing, and the discharge of cutting chips is smooth and unobtrusive, and the sharpness and its sustainability The properties are extremely good. Furthermore, by using the mesh base material as a supporting base material, the material acts on the processed material with a certain kind of buffering property, and impairs the processed surface quality. Very little

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially enlarged plan view of the first superabrasive grinding tool component of the present invention, and FIG. 2 is a second superabrasive grinding tool component of the present invention. FIG. 3 (a), (b), (c) are plan views showing another embodiment of the first invention, respectively, and FIG. 4 is a plan view showing the first embodiment. (A) is a plan view of a box, and (b) and (c) are axes, which illustrate a grinding tool constituted by using the superabrasive grinding tool component of the present invention. Forced tri-roll (D) is a perspective view of a part of the power whetstone,

(e) and (f) are perspective views of a part of the flap wheel.

(g) is a perspective view of the wheel cutter, FIG. 5 is a partially omitted plan view of the superabrasive grinding wheel of the second aspect of the present invention, and FIG. 6 is a plan view of the second aspect of the present invention. FIG. 7 is a partially enlarged cross-sectional view of a superabrasive grinding wheel, and FIG. 8 is a perspective view of a flat-abrasive grinding wheel according to another embodiment of the second superabrasive grinding wheel of the present invention. Is a perspective view showing still another embodiment of the second invention, FIG. 9 is a longitudinal sectional view of FIG. 8, FIG. 10 is a partially enlarged view of FIG. 9, and FIG. Is a longitudinal sectional view showing still another embodiment of the second invention, FIG. 12 is a diagram showing an example of a manufacturing method of the embodiment shown in FIG. 11, FIG. 13 (), (b) and (c) are perspective views of various embodiments of the superabrasive grinding chip of the third present invention, and FIGS. 14 (a) and (b) are ultrafine abrasive chips of the third present invention. FIG. 6 is a perspective view of another embodiment of the abrasive grinding chip. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The grinding tool element according to the first aspect of the present invention can be manufactured, for example, as follows.

(1) Provide a polygonal substrate according to the purpose or a mesh-like base material in which the sides of the polygon are curved.

(2) On the front and back surfaces of the above network base material, liquid Undercoat any resin-based adhesive σ

(3) In the case of a polygonal or shaped base material, one side or two adjacent sides of the base material, or the curved side if one side of the polygon is a curved line Then, superabrasives such as diamond or cubic boron nitride are applied to the front and back surfaces of an appropriate width, ripened, and the adhesive is dried.

(4) The resin adhesive is further overcoated with the resin, and then the adhesive is dried and ♦ semi-cured. Make sure that the pores of the mesh formed by the abrasive and the overcoating adhesive do not exceed 75% of the mesh size.

(5) The dried and semi-cured material is further heated for a required time to completely cure the resin and form an abrasive grain fixing portion to be used as a grinding tool element.

As shown in Fig. 1 and Fig. 2, the fixed state of the abrasive grains on the base material is as follows: a single layer of the yarn 2 constituting the mesh of the mesh base material 1 is formed. Alternatively, in a state in which the multilayer abrasive grains 3 protrude the cutting edge, the abrasive grains 4 are firmly bonded and fixed to the base material by the adhesive 4 to form the abrasive grain fixing portions 5. In Fig. 1, the base material is molded in parallel with the length and width of the base material, but it is also possible to use the die cut (45 ') for the purpose. In some cases, it is more effective.

When the holes in the mesh of the abrasive grains are fixed with abrasives and adhesives, they are used as components such as band saws, flap wheels, and grindstones. In order to discharge chips and provide sufficient coolant, make sure that the mesh does not exceed 75% of the mesh of the abrasive grains. This is what you want. Glass fibers, carbon fibers, silicon carbide fibers, alumina weaves, mulberry birch woods, and metal fibers are fibers constituting the mesh base material used in the first invention. Mineral-to-strength transitions such as miscellaneous or aromatic polyamid fiber, nylon fiber, polyester fiber, vinylon fiber, phenolic weave It is selected from organic synthetic fibers such as miscellaneous and rayon fibers, and the single, blended, or alternating mesh base material is used. The mesh substrate has an opening of 0,4 to 1.5 halls, and the density of warp and weft threads is 0.10 to 30 mesh (this Z25O). I want to do that. With a mesh size of 1.5 or more, coarser than the mesh, the distribution density of the abrasive grains adhered to the base material surface becomes coarse, and the sharpness decreases. . In addition, in the case of an aperture smaller than 0.4 liters finer than 30 meshes, the grain is covered with abrasive grains, which is the first object of the present invention. Effect is difficult to achieve. The abrasive grains used in the first present invention are mainly so-called superabrasive grains such as diamond and cubic silicon nitride, but the abrasive tool element of the first present invention Is a mode in which the abrasive base is coated with the mesh base material as the supporting base material, so that the abrasive density can be made very high. Depending on the material of the workpiece, some of the expensive superabrasives may be replaced by general abrasives and mixed abrasives containing at least 20 weight 6 superabrasives may be used. In addition, sufficient sharpness and durability can be exhibited. Here, general abrasives are aluminum-based abrasives, silicon-carbide-based abrasives, and aluminum-zirconia abrasives specified in JISR 6111 (artificial abrasives). What kind of artificial abrasives as well as quartzite and gar It means natural abrasives such as nets and randoms.

The resin adhesive used in the first aspect of the present invention is a liquid type, and is therefore a resin type phenol resin, a modified resin resin, an epoxy resin, It is a ripening curable resin such as polyimide resin, and is selected from resin adhesives with heat resistance. It is used in combination with various fillers.

The grinding tool element according to the first aspect of the present invention adjusts the balance such as the thickness and density of the veneer flexible yarn of the mesh base material, the hardness of the thermosetting adhesive, and the amount of abrasive particles attached. As a result, a material having characteristics in a range from a material having flexibility to a material having moderate flexibility can be obtained.

FIGS. 1 and 3 show examples of the shape of a grinding tool element according to the first invention, and FIG. 4 shows an example of a shape of a grinding tool constituted by using them.

After the lip-on (band), it can be used as a hole cutter on a blade of a box saw, a band saw, or a cable drill or by winding it multiple times. Alternatively, rectangular ones among the polygons can be radially planted and fixed on a cylinder, used as a polished flap wheel, or wound around a thin shaft core. It can be fixed once and can be used as a cartridge roll with a shaft. In order to make the polished surface a curved line according to the shape of the workpiece and to polish the surface orthogonal to the periphery at a time, a shape as exemplified in FIG. 3 is used.

That is, the first grinding tool element of the present invention is used alone or, if necessary, using a spacer made of a suitable material. According to a large number of them, a polishing flap wheel with a shaft specified in JISR 6258 and a flange-shaped polishing flap as specified in JISR 6259. It is easy to construct a deformed flap wheel that has a wheel or a deformed working surface, and the cylindrical polishing tool specified in JISR 6257. A first grinding tool element of the present invention which can be a structural body, such as a reel or a truncated conical polisher, as specified in IS〇2422. In addition to the above, the shape of a grinding tool having various components specified in JISR 6211 (shape and dimensions of a grinding wheel), such as a flat shape, a ring shape, Indented, cup-shaped, surface-shaped, offset-shaped, bright-shaped, disk-shaped, etc. With the axis grindstone and JISR 6218 that Ki (. Se Gume down door grindstone) to etc. the shape of the segment main emissions Bok grindstone of each species shape Do not Let 's that have been defined as out and the child you are.

Next, more specific examples of the first present invention will be described.

( Example >

Vertical, horizontal 30 lord X 50 thigh, rectangular, 0.18 yards, glass mesh fabric, 20-mesh V-woven mesh base material filled with silica fine powder Impregnate with a resole-type liquid phenolic resin adhesive mixed with an agent so as not to block the eyes, heat dry, and then undercoat with an adhesive similar to the above. Spray coated with diamond abrasive grains of # 140-170 particle size on both front and back sides with a width of 5 mm from one side of the long side of the rectangle, ripened and dried. And shukei This adhesive was overcoated, ripened and dried to make it a semi-cured state.When the abrasive and the adhesive covered the mesh holes, the pore size was about 50%. Had a thickness of 0.7 m. This was wound around a 6 mm diameter core, fixed with an adhesive, and completely cured by heat treatment to form a cartridge with a super-abrasive grain shaft. .

When the inner surface of the tubular silicon nitride sintered body was wet-ground at 1200 rpm with this cart roll, the opened mesh was removed. Then, the coolant was sufficiently supplied to the processing section, the discharge of the chips was smooth, the eyes were not clogged, and the sharpness was extremely good. Its sustainability was good, and it was possible to perform highly efficient grinding work not seen with conventional tools.

Next, a second embodiment of the present invention will be described.

The superabrasive grinding wheel according to the second aspect of the present invention can be manufactured, for example, as follows.

(1) Tubular network A resin-based adhesive such as a liquid phenolic resin is applied to both the front and back surfaces of the base material by undercoating.

(2) Apply a superabrasive layer to the front and back surfaces of an appropriate width from the outer or inner peripheral edge of the annular network base material according to the purpose, and ripen to dry the adhesive. Let

(3) To the dried product, apply the above-mentioned resin-based adhesive and a material of almost the same quality over the top of the product, apply it, ripen it, and dry the adhesive ♦ semi-cured. At this time, make sure that the pores of the mesh with the abrasive grains and the overcoating adhesive do not exceed 75% of the mesh.

(4) Dried and semi-hardened molds are molded into two metal discs After ripening, the resin is completely cured and then removed from the mold.

(5) If necessary, finish the outer or inner circumference to have the desired dimensions and use it as a grinding wheel for superabrasive cutting.

A superabrasive grinding wheel according to another aspect of the present invention is a new one using a semi-cured state after the above step (3) or after the step of the above (4 ·). A shape suitable for the purpose of impregnating with a resin adhesive. ♦ Laminate multiple pieces to obtain dimensions and use two metal discs or dies.

And pressurize the resin for 7 to 3 E to form a flat shape and other grinding stone shapes.

Before the step of (1) above, in which the base material is coated with an adhesive, if necessary, a similar type of adhesive is applied for the purpose of sealing and imparting rigidity to improve the base material. Processing is also effective.

As shown in Fig. 5 and Fig. 6, the state of adhesion of the abrasive grains to the base material is as shown in Fig. 5 and Fig. 6, since the yarn 2 constituting the mesh of the mesh base material 1 is formed in a single layer. Alternatively, the abrasive grains 3 are firmly bonded and fixed to the base material by the adhesive 4 in a state in which the cutting edges protrude from the cutting blades, and the abrasive grain fixing portions 5 are formed.

Close the holes in the mesh of the abrasive grain fixing area with abrasive grains or an adhesive to remove chips when using a whetstone and to ensure sufficient supply of coolant. Should not be more than 75% of the mesh

The fibers constituting the network substrate used in the second invention, the opening of the network substrate, the abrasive grains, and the resin-based adhesive are described in the first aspect. This is the same as the present invention.

Further, in order to further enhance the W property as a grinding wheel for cutting, the thickness of the superabrasive layer should be one or less than the thickness of the superabrasive layer in portions other than the superabrasive grain fixing portion. An adhesive similar to the above, such as fine powder of silicon carbide-based abrasive or aluminum-based abrasive or solid lubricant fine powder such as molybdenum disulfide or graphite. It is also effective to fix them by using.

Further, for example, the configuration may be as shown in FIG. The whetstone shown in this figure is provided with a haptic 10 in the center, as can be better understood with reference to FIGS. 9 and 10, compared to that shown in FIG. Further, a reinforcing member 11 is provided between the respective annular mesh base materials 1. In addition, as shown in Fig. 11, the reinforcing member "M" may be omitted and the reinforcing member "M" may be provided. For example, in order to provide the reinforcing member 11, for example, as shown in FIG. As shown in FIG. 12, reinforcing members 11 may be provided between the components, and may be integrally compression-molded.

Suitable materials for the above-mentioned / and 10 are metals such as iron, stainless steel, aluminum alloy and the like, and base resins and non-conductive resins such as FRP. The reinforcing member may be a ft 7ttt machine 1B5 fiber, a mesh-like material made of organic synthetic woven fabric or thin metal wire, a thin metal plate, a thin metal-perforated plate, Synthetic resin sheet, FR sheet, etc. are suitable.

The superabrasive grinding wheel according to the second aspect of the present invention having the above-mentioned aspect, when used, sufficiently cleans the machining section through an open mesh. It can be supplied in half and the chips are discharged in a circle. Smooth, unobtrusive, with appropriate abrasive cutting edge protruding, the abrasive is firmly bonded and fixed to the base material, making it sharp and sharp. It has excellent characteristics such as good sustainability, and has enabled efficient cutting and grinding operations.

Note that such a haptic and reinforcing member can be provided on the tool described in the first aspect of the present invention, if necessary. A more specific embodiment will now be described.

(Example 1)

Twenty-four mesh woven fabric consisting of glass fiber of 0.18 fiber thickness, mixed with virgin filler material for the purpose of sealing and adding rigidity to the base material Impregnated so as not to block the mesh with the resole type phenolic resin-based adhesive obtained, and after ripening and drying, a 100-millimeter circle with the specified mounting holes. After rounding into a shape and applying a phenolic resin-based adhesive similar to the above undercoating on the entire surface, apply diamond abrasive particles with a particle size of # 140Z 170 from the outer edge 10 times. The outer peripheral surface was spray-coated on both sides, ripened and dried, and further coated with the above-mentioned phenolic resin-based adhesive and heated and dried to obtain a semi-hardened state. This is pressed between the two metal disc molds with a solder, and after ripening, the resin is completely cured and then removed from the mold to make a circular cut. It was a whetstone. At this time, the pores of the mesh with the abrasive and the adhesive were covered by about 50%, the thickness of the abrasive coated part of the grindstone was 0.7, and the thickness of the parts other than the abrasive coated was 0.5. _Π which was the job With this superabrasive cutting wheel, when a silicon nitride sintered body having a thickness of 5 cm was wet-cut at a rotation speed of 5600 Α Α1, the coolant was placed at the cutting section. Sufficiently supplied, the whetstone can be cut with good sharpness without any noticeable whetstone.

(Example 2)

In Example 1, after the top coat was applied, it was matured and dried to obtain a semi-cured state. Sixteen pieces were laminated, and sandwiched between two metal disc molds. 0 This is a whetstone that has been pressed for a long time to achieve the thickness of the lord, completely hardened the resin, integrated, removed from the mold and turned into a flat whetstone. When the silicon nitride sintered body was wet-ground at a rotational speed of 4200 Γm, a workpiece feed speed of 2 mZmin and a cutting depth of 0.1, -The runt was supplied to the grinding section more than enough, and the grinding wheel was able to grind with extremely good sharpness without being noticeable.

Next, a third embodiment of the present invention will be described.

The third abrasive grain grinding chip of the present invention can be manufactured, for example, as follows.

(1) Mesh of a shape suitable for the purpose On both front and back surfaces of small pieces of the base material, apply a resin-based adhesive such as liquid resin: π-nor resin to the undercoat.

(2) Network Abrasive grains are applied to the front and back surfaces of the appropriate paddle from the entire front and back surfaces or the outer edge of the base material, and the adhesive is dried by ripening.

(3) The resin adhesive is further overcoated with the resin that has been dried, and then heated to dry the adhesive ♦ semi-cured. (4) The width of the dried and semi-cured material as it is or the one newly impregnated with a resin-based adhesive has been adjusted to a width corresponding to the purpose. After arranging a plurality of sheets with the outer edges aligned, using a mold, aging and pressing to completely cure the resin and integrate it, remove it from the mold and remove it from the chip. You

Before applying the adhesive to the base material, before the process of (1) above, if necessary, the same type of adhesive is put on the market for the purpose of sealing and imparting flexibility. Reforming is also effective.

As shown in FIGS. 5 and 6 provided in the description of the second aspect of the present invention, the state of adhesion of the abrasive grains to the base material before the lamination bonding is performed as shown in FIGS. A single layer or multiple layers of abrasive grains 3 protrude the cutting blades so as to envelop the yarns 2 constituting the meshes, and are firmly attached to the base material by the adhesive 4. The abrasive grain fixing portion 5 is fixed by bonding. In order to discharge chips and to supply sufficient coolant, it is necessary to close the holes of the mesh of the abrasive grain fixing part with the abrasive grains and the adhesive in order to sufficiently supply the coolant. Hopefully not more than 75% of mesh ₀

Regarding the fibers constituting the mesh base material used in the third invention, the openings of the mesh base material, the abrasive grains, and the resin-based adhesive, the first invention and the surroundings It is.

FIGS. 13 (a), (b) and (G) are each constructed as described above and show the embodiment of the fc chip, and FIGS. 14 (a) and (b) are FIGS. 8 to 10 of the second embodiment of the present invention show a chip having a haptic 10 and a reinforcing member (not shown in FIG. 14) as shown in FIGS. It is a figure which shows an Example. As shown in the figure, the shape of the superabrasive grain grinding chip according to the third aspect of the present invention is circular, triangular or quadrangular, and if necessary, a circular chamfer for mounting is provided at the center as necessary. . In addition, if necessary, a centering shaft for mounting may be provided at the center in advance.

The superabrasive grinding chip of the third invention is used, for example, as a slack tip of a processing method using a peripheral blade or a front blade. On the other hand, the action on the machined surface of the chip is not a so-called cutting action, but a cutting action.

A third aspect of the present invention employs a component according to the first aspect of the present invention, in which a mesh base material is used as a supporting base material and superabrasive grains are fixed so as to leave openings of the meshes. In this mode, a large number of super-abrasive grains protruding from the toe-adhesive layer used by attaching a plurality of these to the mounting jig. The cutting blade acts on the workpiece, and it is possible to supply a sufficient amount of coolant through the open mesh, so that the chips can be discharged smoothly and visually. Adjust the balance such as the type of the base material, the type and the amount of the adhesive, and the coating density of the abrasive grains in order to improve the sharpness and the sustainability of α. Accordingly, the chip of the present invention can be obtained from a material having flexibility to a material having a certain degree of flexibility, and a material having high flexibility can be obtained. However, unlike conventional carbide-hardened chips, such as ∑έ, it has a certain buffering effect on the processed material, resulting in smooth processing. I can't.

Next, a more specific example of the third aspect of the present invention will be described. explain .

( Example ) ,

Pre-filled with a resole phenol resin adhesive mixed with a silica-based fine powder filler, the outer diameter is 20 mm, the hole diameter is 6 mm, and the thickness is 6 mm. 0.18 awake, open 0.9 mesh, density of 20 mesh, a mesh base made of vinylon weave, undercoated with the same type of adhesive as above, 2 width from outer edge Spray and apply diamond abrasive grains of particle size # 80/100 on both front and back, ripen and dry: In addition, apply the same type of adhesive as above, apply, ripen and dry, and semi-cured State. At this time, the pores of the mesh were covered by the abrasive grains and the adhesive by about 50%, and the thickness of the abrasive grain fixing portion was about 0.8%. 18 sheets of this were laminated with their outer edges aligned, placed in a mold, compressed under pressure to a thickness of 7 m, and then ripened to completely cure the resin and integrated. After that, it was taken out from the mold and made into a 7-inch thick chip with an outer diameter of 20 shelves.

Attach the above 8 chips to the front side faceplate and cut out 20-thick silicon nitride ceramics with a vertical faceplate. With a feed rate of 30 swt Znini and a processing speed of 1300 m / isin, it is extremely sharp and has a very good sustainability. It has been demonstrated that efficient processing is possible, which is not seen in Japan.

Also, the present invention has been applied to a processing method of a tool stationary system in which a superabrasive chip of the present invention is fixed to a tool holder and a work material is rotated. In the same processing situation as the system processing method there were .

The third super-abrasive grinding chip of the present invention can be used for various ceramics, carbide alloys, and the like, which were impossible with a conventional slow-a-chip. Is it possible to carry out cutting, without causing the reduction in sharpness like a conventional super-abrasive grinding wheel, and enabling efficient processing? Was In particular, the third chip of the present invention using diamond abrasives is used for processing hard and brittle materials such as fine ceramics. Compared to conventional diamond grinding wheels, which have high flexibility, they act more elastically on the machined surface and do not cause cracking or chipping, resulting in defects. There was no or very little processing surface.

Claims

The scope of the claims

(1) A mesh base material and abrasive grains containing superabrasive grains such as diamond and cubic isonitride are adhered to at least a part of the network base material. And an abrasive grain fixing portion comprising

The mesh substrate is made of an inorganic fiber or an organic synthetic fiber, and has a mesh size of 0.4 to 1.5 and a density of 10 to 30 mesh. Yes,

The abrasive contains at least 20% by weight of the superabrasive,

The abrasive grain fixing portion is fixed with a resin-based adhesive so that the super-abrasive grains form the yarn of the mesh base material, and the pore closing of the mesh is 75%. A super-abrasive grinding tool component characterized by less than the above.

(2) A network substrate and at least a part of the network substrate have diamond and cubic nitriding! ! And an abrasive grain fixing portion formed by attaching abrasive grains containing superabrasive grains such as natural abrasive grains.

The mesh substrate is made of an inorganic fiber or an organic synthetic fiber, and has a mesh size of 0.4 to 1.5, and a density of 10 to 30 mesh. ,

The abrasive grains contain the superabrasive grains in an amount of 20% by weight or more, and the abrasive grain fixing portion is bonded and fixed with a resin-based adhesive so that the superabrasive grains create a thread of a mesh base material. Also, a superabrasive grinding tool that is configured using a superabrasive grinding tool component that does not have a mesh hole closing of 75% or more, The mesh base material is an annular s material, and one layer of the superabrasive grinding tool component in which the abrasive grain fixing portion is formed at least at an outer peripheral end or an inner peripheral end. Super abrasive grain grinding 55 stones, characterized in that they are constructed by laminating a plurality of layers.

Abrasive grain fixation obtained by fixing a mesh base material and abrasive grains containing superabrasive grains such as diamond and cubic crystal nitride to at least a part of the mesh base material. And a part,

The mesh base material is made of an inorganic fiber or an organic synthetic fiber, and has an opening of 0.4 to 1.5 shelves and a density of 10 to 30 mesh. Is set to

The abrasive contains 20% by weight or more of the superabrasive,

The abrasive grain fixing portion is fixedly bonded with a resin-based adhesive so that the superabrasive grains form the thread of the mesh base material, and the mesh has a pore closing capacity of 75 mm. % Of superabrasive grinding tools that are constructed using less than

The mesh substrate has a polygonal plate shape or a circular plate shape, and at least a part of the superabrasive grinding tool component having the abrasive grain fixing portion formed on at least a part of its surface. Super-abrasive grain chip characterized by being integrated in a laminated state.