Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
  • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
  • B24D11/001—Manufacture of flexible abrasive materials

Definitions

• 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.
• a superabrasive grinding tool such as a superabrasive grinding wheel and a grinding tool using the component.
• 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.
• 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.
• B 41 31 diamonds and cubic boron nitride wheels
• flat, square and force Various shapes such as top and segment types and shafts are known.
• 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.
• a slot-away chip such as cemented carbide, cermet, etc. Materials such as silicon, aluminum, aluminum nitride, and silicon nitride.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• the mesh substrate is, for example, polygonal
• 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.
• a superabrasive grinding tool 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.
• the mesh base material 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.
• a superabrasive grinding tool is a superabrasive grinding tool component according to the first aspect of the present invention, wherein the mesh base material has a large number.
• 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.
• 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.
• 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.
• 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
• FIG. 1 is a partially enlarged plan view of the first superabrasive grinding tool component of the present invention
• 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
• FIG. 4 is a plan view showing the first embodiment.
• (A) is a plan view of a box
• (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,
• FIG. 5 is a partially omitted plan view of the superabrasive grinding wheel of the second aspect of the present invention
• 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
• 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. 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.
• the grinding tool element according to the first aspect of the present invention can be manufactured, for example, as follows.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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. .
• 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.
• 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
• FIG. 4 shows an example of a shape of a grinding tool constituted by using them.
• the lip-on 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.
• 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.
• a shape as exemplified in FIG. 3 is used.
• the first grinding tool element of the present invention is used alone or, if necessary, using a spacer made of a suitable material.
• 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 ⁇ 2422.
• the shape of a grinding tool having various components specified in JISR 6211 shape and dimensions of a grinding wheel
• 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.
• 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.
• 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.
• 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.
• a reinforcing member 11 is provided between the respective annular mesh base materials 1.
• the reinforcing member "M" may be omitted and the reinforcing member "M” may be provided.
• 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.
• 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.
• 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.
• the silicon nitride sintered body was wet-ground at a rotational speed of 4200 ⁇ m, 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.
• the third abrasive grain grinding chip of the present invention can be manufactured, for example, as follows.
• 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.
• the openings of the mesh base material, the abrasive grains, and the resin-based adhesive, the first invention and the surroundings It is.
• the outer diameter is 20 mm
• the hole diameter is 6 mm
• 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:
• apply the same type of adhesive as above apply, ripen and dry, and semi-cured State.
• 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%.
• 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?
• 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.

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• Mechanical Engineering (AREA)
• Polishing Bodies And Polishing Tools (AREA)

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• 1987
  • 1987-02-10 DE DE19873790060 patent/DE3790060C2/de not_active Expired - Fee Related
  • 1987-02-10 WO PCT/JP1987/000084 patent/WO1987004652A1/ja active Application Filing
  • 1987-02-10 DE DE19873790060 patent/DE3790060T/de active Pending

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