WO2008150049A1 - Procédé de fabrication d'une roue de coupe et roue de coupe fabriquée selon celui-ci - Google Patents

Procédé de fabrication d'une roue de coupe et roue de coupe fabriquée selon celui-ci Download PDF

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Publication number
WO2008150049A1
WO2008150049A1 PCT/KR2007/005278 KR2007005278W WO2008150049A1 WO 2008150049 A1 WO2008150049 A1 WO 2008150049A1 KR 2007005278 W KR2007005278 W KR 2007005278W WO 2008150049 A1 WO2008150049 A1 WO 2008150049A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting wheel
core material
cutting
peel sheet
core
Prior art date
Application number
PCT/KR2007/005278
Other languages
English (en)
Inventor
Yoo-Hong So
Original Assignee
D & D Disc Industry Corp.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by D & D Disc Industry Corp. filed Critical D & D Disc Industry Corp.
Publication of WO2008150049A1 publication Critical patent/WO2008150049A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels

Definitions

  • the present invention relates to a method for manufacturing a cutting wheel and a cutting wheel manufactured by the same, more specifically to a method for manufacturing a cutting wheel for manufacturing a cutting wheel by improving the structure with the non- woven fabric remaining on the surface of one side of the cutting wheel excluded and a cutting wheel manufactured by the same.
  • a cutting wheel 10 refers to a disk-shaped wheel having a fastening hole
  • the cutting wheel is mounted on a cutting tool (for example, a hand grinder), the cutting wheel can be used for cutting various materials by the cutting force of the circumference.
  • a cutting tool for example, a hand grinder
  • a conventional cutting wheel 10 used for cutting as described above As can be seen from the structure of a conventional cutting wheel 10 used for cutting as described above, as shown in Fig. 2, it consists of a ceramic powder mixture 11 in the center, fiber glass core material 12 attached on both sides of this ceramic mixture 11, and non woven fabrics 90 attached to both outer surfaces of the core material 12 to prevent the mixture hardened by molding from sticking to a mold 20 for manufacturing the cutting wheel.
  • the nonwoven fabric 90 for peeling must be used to let the ceramic mixture come off easily after heating and compression is completed.
  • the present invention is to solve the conventional problems as mentioned above with an object to provide a product with nonwoven fabric excluded from the front and rear surfaces of the cutting wheel and a new manufacturing method by which it is possible to produce a product with nonwoven fabric excluded, so that it enables the producer to produce good-quality products and the consumer to be supplied with good-quality products at lower prices so as to be able to use cutting wheels with grinding and cutting actions maximized.
  • a method for manufacturing a cutting wheel comprising: a mixture preparation process in which the powder material mixture is prepared by mixing ceramic powder and resin which are main materials for manufacturing the cutting wheel; a core material preparation process in which the core material is prepared by cutting in circular shape a fiber glass material woven in textile form; a peel sheet preparation process in which the peel sheet is prepared by cutting in circular shape a vinyl material having a predetermined thickness; a core material curing process in which the core material is cured for desired time under desired temperature and desired pressure with the peel sheet adhered to the surface of one side of the prepared core material; a molding process in which one core material is laid on the floor of the mold with the peel sheet directed downward, and the powder mixture is put into the mold on it and is spread to a given thickness, and another cured core material is covered over it with the peel sheet directed upward, and the mold lid is positioned to cover it, and then the cutting wheel is molded by pressurizing/heating;
  • the curing process is carried out for desired time under desired humidity besides desired temperature and desired pressure in the core material curing process.
  • the method further comprises a graphite paper adhesion process for adhering a graphite paper for attaching a label to the portion of a central hole of the cutting wheel after the cooling process.
  • the core material curing process further comprises laminating and curing with space materials sandwiched between the core materials to cure a large quantity of core materials at one time.
  • the cutting wheel for achieving the above-mentioned object is characterized in that nonwoven fabrics do not exist on both surfaces since it is manufactured according to the above-mentioned manufacturing method.
  • the cutting wheel of the present invention has a surface in smooth condition that is sintered together with the core material and mixture without nonwoven fabric, unlike the conventional product that was produced and used with the nonwoven fabric attached on the back surface.
  • peel sheet is used for omission of nonwoven fabric, and it is made to remain attached to the core material just by curing by providing heat, pressure, and humidity without separate adhesives, and it is designed to be easily detached, so it has an advantage that it is possible to mass-produce good-quality products without much difficulty.
  • FIG. 1 is a perspective view showing a conventional cutting wheel
  • FIG. 2 is a sectional view of the cutting wheel illustrated in Fig. 1;
  • FIG. 3 is a flow diagram for describing the manufacturing process of the conventional cutting wheel
  • FIG. 4 is a sectional view showing a cutting wheel of the present invention.
  • FIG. 5 is a sectional view of the cutting wheel illustrated in Fig. 4;
  • FIG. 6 is a block diagram for describing the manufacturing process of the cutting wheel of the present invention.
  • Fig. 7 is a flow diagram for describing the core material curing process of the present invention.
  • Fig. 8 is a flow diagram for describing the whole manufacturing process of the present invention.
  • FIG. 4 is a sectional view showing a cutting wheel of the present invention
  • Fig. 5 is a sectional view of the cutting wheel illustrated in Fig. 4
  • Fig. 6 is a block diagram for describing the manufacturing process of the cutting wheel of the present invention.
  • the cutting wheel 10 of the present invention comprises, as shown in Fig. 4 and
  • a powder material mixture 11 in the center hardened by the molding of powder material and the core material 12 of fiber glass material that is melted and stuck together with the powder material mixture on the surface.
  • Graphite paper 50 is attached to the central portion of the cutting wheel as necessary before shipping.
  • the mixture 11 in the mixture preparation process is powder made by mixing ceramic powder and resin which are main materials for manufacturing the cutting wheel. This mixture is molded to a predetermined shape under environment of a given pressure and temperature and is composed of components that are sintered if heated in an electric furnace.
  • the core material 12 is made by cutting in circular shape a fiber glass material woven in textile form.
  • the core material illustrated in the drawing was woven at an interval of some millimeters.
  • the peel sheet 13 is prepared by cutting vinyl material having a predetermined thickness into a circular shape.
  • the thickness of this vinyl is suitably about 0.05 mm. The thinner the thickness of vinyl is, the better; but if the thickness is too thin, there is a problem that the vinyl could be torn when it is attached to or detached from the core material.
  • the core material 12 and peel sheet 13 prepared as described above are attached to each other, and then finally they are cured so as to make the attached condition of these materials.
  • Curing is done for desired time at desired temperatures and pressures with the prepared peel sheet 13 adhered to the core material 12.
  • temperatures desired for curing are about 30 ° C to 35
  • the cured core materials 12 that were made through the processes as described above are arranged at a given interval and hardened with powder material mixture 11 put in between the core materials.
  • a circular mold 20 as shown in the drawing is used.
  • One cured core material 12 is laid on the floor of the mold 20 with the peel sheet 13 directed downward, and the above-mentioned powder mixture 11 is put into the mold on it, and then it is spread to a given height with a uniform thickness.
  • Another cured core material 12 is covered over the powder mixture.
  • the peel sheet 13 is directed upward, and after the mold lid 21 positioned to cover it, another means is used to mold the shape of the cutting wheel 10 by heating and compressing under a condition of about 75 kg/cm pressure at 40 ° C.
  • the subsequent peel sheet 13 removal process is for detaching the peel sheet 13 from the cutting wheel 10 that has undergone said molding process.
  • the subsequent sintering process is for pressurizing/heating the cutting wheel 10 that has undergone the peel sheet removal process after putting it in a sintering furnace 40.
  • the sintering method used in the present invention involves sticking and superposing a plurality of cutting wheels 10 around a pole 31, inserting and laminating space materials 30 between the core materials 12, and making them naturally pressurized by putting a weight 32 on top.
  • the cutting wheels are put in a sintering furnace 40 that uses electric power as a heat source and are heated at a proper temperature, and then are taken out after a given time has passed.
  • a sintering furnace 40 that uses electric power as a heat source and are heated at a proper temperature, and then are taken out after a given time has passed.
  • about 180 ° C is suitable for the temperature of the sintering furnace for sintering, and a weight that can apply pressure of about 2 kg/cm is preferable.
  • the subsequent cooling process is for cooling the cutting wheel 10 that has undergone the above-described sintering process by exposing it for a given time in natural open-air condition or forced draft condition.
  • the cutting wheel of the present invention is completed by going through all these processes, and if necessary, a graphite paper adhesion process may be added for adhering the graphite paper 50 for attaching a label in the portion of the central hole
  • the cutting wheel of the present invention has a surface in smooth condition that is sintered together with the core material and mixture without nonwoven fabric, unlike the conventional product that was produced and used with the nonwoven fabric attached on the back surface. [69] Therefore, it has advantages that the cutting ability is excellent during cutting and grinding work, the roughness degree of the processed cross section or surface is good, and it has a long life as its vibration and breakage are minimized. [70] Although the present invention has been described in connection with the exemplary embodiments illustrated in the drawings, it is only illustrative. It will be understood by those skilled in the art that various modifications and equivalents can be made to the present invention. Therefore, the true technical scope of the present invention should be defined by the appended claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'une roue de coupe et une roue de coupe fabriquée selon celui-ci. L'un des objets principaux de la présente invention est de proposer un produit sans tissu non tissé sur les surfaces avant et arrière de la roue de coupe et un nouveau procédé de fabrication grâce auquel il est possible de fabriquer un produit sans tissu non tissé, de manière à permettre au fabricant de fabriquer des produits de bonne qualité et au client d'avoir accès à des produits de bonne qualité à moindres coûts de manière à pouvoir utiliser des roues de coupe avec des actions de meulage et de coupe maximisées. Le procédé de fabrication d'une roue de coupe de la présente invention comprend un procédé de préparation de mélange pour mélanger de la poudre de céramique et de la résine; un procédé de préparation de matériau noyau du matériau noyau pour couper un matériau de fibre de verre tissé sous forme textile; un procédé de préparation de film d'un matériau vinyle présentant une épaisseur prédéterminée; un procédé de durcissement du matériau noyau dans lequel le matériau noyau est durci pendant une durée souhaitée à une température souhaitée et une pression souhaitée avec le film adhérant au matériau noyau préparé; un procédé de moulage dans lequel le mélange de poudre est mis dans une paire des matériaux noyaux et la roue de coupe est moulée par pressurisation/chauffage; un procédé de retrait du film pour détacher le film; un procédé de frittage dans lequel une pluralité de roues de coupe est mise dans un four de frittage avec un matériau d'espacement inséré et laminé entre les matériaux noyaux, et frittée pendant une durée souhaitée à une température et une pression souhaitées; et un procédé de refroidissement dans lequel les roues de coupe qui ont réalisé le procédé de frittage sont refroidies pendant une durée souhaitée.
PCT/KR2007/005278 2007-06-08 2007-10-25 Procédé de fabrication d'une roue de coupe et roue de coupe fabriquée selon celui-ci WO2008150049A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020070056069A KR100763786B1 (ko) 2007-06-08 2007-06-08 커팅 휠의 제조방법과 그 제조방법에 따른 커팅 휠
KR10-2007-0056069 2007-06-08

Publications (1)

Publication Number Publication Date
WO2008150049A1 true WO2008150049A1 (fr) 2008-12-11

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PCT/KR2007/005278 WO2008150049A1 (fr) 2007-06-08 2007-10-25 Procédé de fabrication d'une roue de coupe et roue de coupe fabriquée selon celui-ci

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KR (1) KR100763786B1 (fr)
WO (1) WO2008150049A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013020874A1 (fr) * 2011-08-05 2013-02-14 Rhodius Schleifwerkzeuge Gmbh & Co. Kg Procédé de fabrication d'un outil pour meuler à résine agglomérée, outil pour meuler fabriqué selon le procédé ainsi que système pour mettre en œuvre le procédé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100913352B1 (ko) * 2008-12-04 2009-08-20 (주)디앤디 디스크산업 커팅 휠 및 그의 제조방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5651801A (en) * 1993-11-12 1997-07-29 Minnesota Mining And Manufacturing Company Method for making an abrasive article
US20030032384A1 (en) * 2001-08-01 2003-02-13 Noritake Co., Limited Grinding wheel, a process of manufacturing the grinding wheel and a process of reclaiming the grinding wheel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5651801A (en) * 1993-11-12 1997-07-29 Minnesota Mining And Manufacturing Company Method for making an abrasive article
US20030032384A1 (en) * 2001-08-01 2003-02-13 Noritake Co., Limited Grinding wheel, a process of manufacturing the grinding wheel and a process of reclaiming the grinding wheel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013020874A1 (fr) * 2011-08-05 2013-02-14 Rhodius Schleifwerkzeuge Gmbh & Co. Kg Procédé de fabrication d'un outil pour meuler à résine agglomérée, outil pour meuler fabriqué selon le procédé ainsi que système pour mettre en œuvre le procédé

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Publication number Publication date
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