JPH052468B2 - - Google Patents
Info
- Publication number
- JPH052468B2 JPH052468B2 JP10657387A JP10657387A JPH052468B2 JP H052468 B2 JPH052468 B2 JP H052468B2 JP 10657387 A JP10657387 A JP 10657387A JP 10657387 A JP10657387 A JP 10657387A JP H052468 B2 JPH052468 B2 JP H052468B2
- Authority
- JP
- Japan
- Prior art keywords
- shaped
- disc
- cutting
- rim
- ring
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 127
- 238000005520 cutting process Methods 0.000 claims description 95
- 229920001875 Ebonite Polymers 0.000 claims description 32
- 238000000227 grinding Methods 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 230000001070 adhesive effect Effects 0.000 claims description 23
- 239000000853 adhesive Substances 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 18
- 239000006061 abrasive grain Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000000748 compression moulding Methods 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000005060 rubber Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 16
- 239000007788 liquid Substances 0.000 description 13
- 239000011162 core material Substances 0.000 description 12
- 229920000049 Carbon (fiber) Polymers 0.000 description 9
- 239000004917 carbon fiber Substances 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 9
- 239000010410 layer Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 6
- 229910010271 silicon carbide Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000005011 phenolic resin Substances 0.000 description 4
- 239000002759 woven fabric Substances 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000002998 adhesive polymer Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000011134 resol-type phenolic resin Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000576 Laminated steel Inorganic materials 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- -1 etc.) Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010068 moulding (rubber) Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/025—Details of saw blade body
- B23D61/026—Composite body, e.g. laminated, body of diverse material
Description
【発明の詳細な説明】
作業上の利用分野
本発明は、円板状切断砥石の製法に関する。詳
しくは、円板状砥石の周辺部分が砥粒硬質ゴム系
複合体のリム部材からなり、そして該リム部に接
続している円板状砥石の周辺部分以外の部分が２
枚以上の円板状支持材を用いて接着複合した内円
部材からなる円板状切断砥石の製法に関する。本
発明の製法によれば、重合体系接着材料を用いる
圧縮成形によつて、該リム部材および内円部材が
一工程によつて強固に接合される。本発明による
切断砥石は、相対的に肉薄でそして鋭利である上
に、切断作業におけるチツピングおよび曲がり等
が実質的に防止される。DETAILED DESCRIPTION OF THE INVENTION Field of Operation The present invention relates to a method for manufacturing a disc-shaped cutting wheel. Specifically, the peripheral part of the disc-shaped grindstone is made of a rim member made of an abrasive hard rubber composite, and the parts other than the peripheral part of the disc-shaped grindstone connected to the rim part are made of a rim member made of an abrasive hard rubber composite.
The present invention relates to a method for manufacturing a disc-shaped cutting grindstone comprising an inner circular member bonded and composited using more than one disc-shaped supporting member. According to the manufacturing method of the present invention, the rim member and the inner circular member are firmly joined in one step by compression molding using a polymeric adhesive material. The cutting wheel according to the present invention is relatively thin and sharp, and also substantially prevents chipping, bending, etc. during cutting operations.
従来の技術および問題点
超砥粒切断砥石において、砥粒の結合剤として
金属を用いたメタルボンド超砥粒切断砥石が知ら
れている。これは、耐摩耗性にすぐれているが、
切れ味が極めて悪く難削材の切断に不向きであ
る。Prior Art and Problems Among superabrasive cutting wheels, metal-bonded superabrasive cutting wheels that use metal as a bonding agent for abrasive grains are known. This has excellent wear resistance, but
It has extremely poor sharpness and is unsuitable for cutting difficult-to-cut materials.
また、結合剤として樹脂を用いたレジンボンド
超砥粒切断砥石が知られている。これは、切れ味
は良好であるが、砥石の摩耗が著しく難削材の切
断に不向きである。 Furthermore, resin bonded superabrasive cutting wheels using resin as a binder are known. Although this has good sharpness, the grindstone is severely worn and is not suitable for cutting difficult-to-cut materials.
超砥粒切断砥石に使用される超砥粒は高価であ
るため、切断砥石外周部にリム状に超砥粒砥石層
を設け、そして外周部以外の内円部には一枚の金
属円板を用いることができる。メタルボンド超砥
粒切断砥石の場合には、超砥粒砥石層と金属円板
との接合はリム状の超砥粒砥石層と内円部の金属
円板を同時に高温度圧縮する金属性の融着か、超
砥粒砥石属と金属円板とを溶接する方法が採用さ
れる。 Since the superabrasive grains used in superabrasive cutting wheels are expensive, a rim-shaped layer of superabrasive grains is provided around the outer periphery of the cutting wheel, and a single metal disc is placed on the inner circle other than the outer periphery. can be used. In the case of a metal-bonded superabrasive cutting wheel, the bond between the superabrasive grinding wheel layer and the metal disk is achieved by simultaneously compressing the rim-shaped superabrasive grinding wheel layer and the metal disk in the inner circle at high temperature. Fusion bonding or welding of the superabrasive grinding wheel and the metal disc is employed.
しかし、レジンボンド超砥粒切断砥石の場合に
は超砥粒砥石層の構成要素である樹脂の耐熱性が
低いため、上記のような融着方法を用いることが
できない。レジンボンド超砥粒砥石の場合、超砥
粒砥石層と一枚の金属円板との接合は金属円板外
周部の接合面の接触面積を大にするため粗面化す
るなどの方策を施し、接着剤による接合が行われ
ているが、接合力が弱く、しばしば超砥粒砥石層
が欠落する。 However, in the case of a resin-bonded superabrasive cutting wheel, the heat resistance of the resin that is a component of the superabrasive grinding wheel layer is low, so the above-described fusion method cannot be used. In the case of resin-bonded superabrasive grinding wheels, measures such as roughening the surface of the outer periphery of the metal disk are used to increase the contact area between the superabrasive grinding wheel layer and a single metal disk. Although adhesive bonding is used, the bonding force is weak and the superabrasive grinding wheel layer is often missing.
また、該内円部材としての金属円板は強度が大
で破損することはないが吸振性に乏しく、切断面
に発生するチツピングの原因となつている。 Further, although the metal disk serving as the inner circular member has high strength and will not be damaged, it has poor vibration absorbing properties and is a cause of chipping that occurs on the cut surface.
このように従来のメタルボンド超砥粒切断砥石
およびレジンボンド超砥粒切断砥石では、切れ
味、耐磨耗性、曲がり、破損およびチツピングの
発生等のいくつかに関して重大な問題があり、充
分な性能を発揮するものはなかつた。 As described above, conventional metal-bonded superabrasive cutting wheels and resin-bonded superabrasive cutting wheels have serious problems with respect to sharpness, wear resistance, bending, breakage, and occurrence of chipping, and it is difficult to achieve sufficient performance. There was nothing that demonstrated this.
現在、切断や溝入れを必要とする各種の難削性
素材に対して、非常に高価な超砥粒を用いた切断
砥石が使用されるようになつた。これらの加工用
素材は難削性で硬度や耐磨耗性が高いため、切断
砥石の切れ味が悪くその磨耗も著しい。切れ味が
悪いと、切断作業中に曲がりが発生し破損に至る
ことも少なくない。また切断作業中に発生するび
びり現象のため、被加工物にチツピングを生じる
ことも多い。このため切れ味が良好で砥石の磨耗
が少なく、そして更に切断作業中の曲がりやチツ
ピングの発生が解消された切断砥石が、要望され
ている。 Currently, cutting wheels using extremely expensive superabrasive grains have come to be used for various difficult-to-cut materials that require cutting or grooving. These machining materials are difficult to machine and have high hardness and wear resistance, so cutting wheels are not sharp and wear out considerably. If the blade is not sharp enough, it will often bend during the cutting process and lead to damage. Furthermore, due to the chatter phenomenon that occurs during cutting operations, chipping often occurs in the workpiece. For this reason, there is a need for a cutting whetstone that has good sharpness, reduces wear on the whetstone, and eliminates bending and chipping during cutting operations.
解決するための手段
本発明者は、超砥粒を研削とする切断砥石の結
合剤として弾性に富み強じんな硬質ゴムを用いる
ことにより、切れ味が向上し、砥石の磨耗も著し
く減少することを見い出した。この砥石は切れ味
が良好なため、切断作業中の曲がりが少ない上
に、該内円部材として重合体系の接着剤料を使用
した円板状支持材の積層物を採用することによ
り、曲がりに充分耐える強度を有していることを
確認した。また、該内円部材の厚生要素である重
合体系接着材料は吸振性を有するため、被加工物
に発生するチツピングを抑制することを確認し
た。更に、リム部材である超砥粒砥石部と内円部
材との接合については、超砥粒砥石の結合剤であ
る硬度ゴムと該内円部材の円板状支持材の接着に
用いる重合体系接着とが、圧縮成型により共融硬
化または密着硬化して該超砥粒砥石部と内円部材
が強力に接合し、切断作業中に超砥粒砥石部が欠
落することがないことを確認した。Means for Solving the Problem The present inventor has found that by using a highly elastic and strong hard rubber as a binder for a cutting wheel that uses superabrasive grains for grinding, the sharpness can be improved and the wear of the wheel can be significantly reduced. I found it. This whetstone has good sharpness, so there is little bending during cutting, and the inner circular member is made of a laminate of disc-shaped support materials using a polymer adhesive, so it is able to resist bending easily. It was confirmed that it had the strength to endure. In addition, it was confirmed that the polymer-based adhesive material, which is a welfare element of the inner circular member, has vibration absorbing properties and thus suppresses chipping that occurs in the workpiece. Furthermore, for joining the superabrasive grinding wheel part that is the rim member and the inner circular member, a polymer adhesive is used to bond the hard rubber, which is the bonding agent of the superabrasive grinding wheel, and the disk-shaped support material of the inner circular member. It was confirmed that the superabrasive grinding wheel part and the inner circular member were strongly bonded by eutectic hardening or contact hardening by compression molding, and that the superabrasive grinding wheel part did not come off during the cutting operation.
従つて本発明によつて、代表的に、切断砥石の
周辺部分であるリム状砥石材２形成用の砥粒含有
硬質ゴムコンパウンドのリング状シート材料、お
よび該リング状シートのリング状空間部に該リン
グの内径と同程度の外径を有する内円部材３形成
用の２枚以上の円板状支持材を含む材料を重合体
系接着材料（例えば合成樹脂系または合成ゴム系
の接着性材料）を存在させて配置し、配置した該
材料を円板切断砥石用の成型空間を有する金型内
にて圧縮成形して、該リム状砥石材２と該円板状
支持材６とを該重合体接着材料８によつて一体化
することを特徴とする、円板状切断砥石１の製法
が提供される。上記の円板状支持材を含む材料と
して該円板状支持材の間に芯部の硬質ゴム系材料
を配置して、圧縮成形する製法も有用である。 Therefore, according to the present invention, typically, a ring-shaped sheet material of an abrasive grain-containing hard rubber compound for forming the rim-shaped grindstone material 2, which is the peripheral portion of a cutting grindstone, and a ring-shaped space of the ring-shaped sheet are provided. The material containing two or more disc-shaped supporting members for forming the inner circular member 3 having an outer diameter comparable to the inner diameter of the ring is a polymer-based adhesive material (for example, a synthetic resin-based or synthetic rubber-based adhesive material). The rim-shaped grinding stone material 2 and the disc-shaped support material 6 are compressed and molded in a mold having a molding space for a disc-cutting grindstone. A method for manufacturing a disc-shaped cutting wheel 1 is provided, which is characterized in that it is integrated by a bonding material 8. It is also useful to use a manufacturing method in which a hard rubber core material is placed between the disc-shaped supporting materials and compression molded as the material containing the disc-shaped supporting materials.
作用および効果
本発明の製法によれば、圧縮硬化成形工程によ
つて周辺部分のリム状砥石材と内円部分の円板状
支持材とが、該重合体系接着材料の存在において
一体化して形成できる。すなわち、硬質ゴム材料
を結合材として使用して、切れ味が良好で砥石の
摩耗が少なく切断作業中に曲がりが発生しないリ
ム状超砥粒切断砥石材を有する、実用的に有用な
性能の製品を得ることができる。更に、切断作用
に直接関与する超砥粒砥石部を切断砥石外周部に
リム状に設け、切断作業中の曲がりや破損および
チツピングの発生に関与する内円状支持部は複数
の円板状支持材を吸振性を有する合成樹脂接着材
料で複合したものを採用することにより、切断砥
石が薄い場合でも切断作業中の曲がりや破損およ
びチツピングの発生を抑制することができる。ま
た超砥粒砥石部が支持材部から欠落する問題につ
いては、本発明によれば超砥粒砥石部と該内円状
支持部とが強力に接合するため、切断砥石が薄い
場合でも切断作業中に超砥粒砥石部が欠落するこ
とはない。Effects and Effects According to the manufacturing method of the present invention, the rim-shaped grinding stone material in the peripheral portion and the disc-shaped support material in the inner circular portion are integrated in the presence of the polymer adhesive material by the compression hardening molding process. can. In other words, we have created a product with practically useful performance that uses a hard rubber material as a binding material and has a rim-shaped super-abrasive cutting wheel material that provides good sharpness, reduces grinding wheel wear, and does not bend during cutting. Obtainable. Furthermore, the superabrasive grinding wheel part that is directly involved in the cutting action is provided in a rim shape on the outer periphery of the cutting grinder, and the inner circular support part, which is involved in bending, breakage, and chipping during the cutting process, is provided with a plurality of disc-shaped supports. By using a composite material made of a synthetic resin adhesive material having vibration absorbing properties, even if the cutting wheel is thin, bending, breakage, and chipping during cutting can be suppressed. In addition, regarding the problem of the superabrasive grinding wheel part coming off from the support part, according to the present invention, the superabrasive grinding wheel part and the inner circular support part are strongly joined, so even if the cutting wheel is thin, cutting can be carried out. The super abrasive grinding wheel part will not be missing inside.
発明の詳しい記述
本発明によつて得られる円板状切断砥石の代表
的な態様を、第１〜５図の断面部分図および第６
図の平面図に例示する。なお、第７図の切断部分
図に比較例としての構造を例示する。Detailed Description of the Invention Typical embodiments of the disc-shaped cutting grindstone obtained by the present invention are shown in partial cross-sectional views in FIGS. 1 to 5 and in FIG.
This is illustrated in the plan view of the figure. In addition, the structure as a comparative example is illustrated in the cutaway partial view of FIG.
以下に添付図面を参照しながら、本発明の構成
材料について記述する。リム状砥石材２は、砥粒
４と硬質ゴム結合材５とから本質的になる。該リ
ム状砥石材と強固に接合している内円部支持材３
は、２枚以上の円板状支持材６から本質的にな
り、そして該円板状支持材は重合体系接着材料に
よつて該リム状砥石材２の内縁部を保持して一体
化している。 The constituent materials of the present invention will be described below with reference to the accompanying drawings. The rim-shaped grindstone material 2 essentially consists of abrasive grains 4 and a hard rubber bonding material 5. An inner circle support member 3 that is firmly connected to the rim-shaped grindstone material
essentially consists of two or more disk-shaped supports 6, and the disk-shaped supports hold and integrate the inner edge of the rim-shaped grindstone 2 by a polymeric adhesive material. .
リム状砥石材２の砥粒としては、人造ダイヤモ
ンド粒、立法晶形チツ化ホウ素またはこれらの混
合物等の超砥粒が一般に使用され、そして好まし
くは該砥粒に同重量前後の鉄属等の金属（例えば
ニツケルをコーテイングしたものが使用される。 As the abrasive grains of the rim-shaped abrasive stone material 2, superabrasive grains such as artificial diamond grains, cubic boron titanide, or a mixture thereof are generally used, and preferably about the same weight of metal such as iron or the like is added to the abrasive grains. (For example, one coated with nickel is used.
硬質ゴム係合剤５すなわち硬質ゴムコンパウン
ドとしては、重量にてSBR、NBR等の合成ゴ
ム、天然ゴムまたはこれらの混合物100部と、加
硫剤（例えばイオウ）約50〜100部、有効量の加
硫促進剤（例えば約３％）、有効量の促進助剤
（例えば約２％）から本質的になり、必要に応じ
てフエノール、ポリイミド等の強化用樹脂を、約
10部以下添加したものが例示される。該硬質ゴム
コンパウンドに、有効量の砥粒を、そして通常は
強度の増大および砥粒の脱落を防止するためにヤ
ング率の大きいセラミツク形微細充填材（SiC、
TiN等）を添加して混練し、砥石材２形成用の
砥粒含有ゴムコンパウンドが得られる。なお、砥
粒の有効量とは、切断砥石の用途に応じて、例え
ば集中度50〜150程度（集中度100は砥粒含有ゴム
コンパウンド１c.c.中に砥粒0.88グラムを含有す
る）に自由に選定できる範囲を意味する。 The hard rubber binding agent 5, that is, the hard rubber compound, contains 100 parts by weight of synthetic rubber such as SBR, NBR, natural rubber, or a mixture thereof, about 50 to 100 parts of a vulcanizing agent (for example, sulfur), and an effective amount of consisting essentially of a vulcanization accelerator (e.g., about 3%), an effective amount of an accelerator (e.g., about 2%), optionally containing a reinforcing resin such as phenol, polyimide, etc.
An example is one in which 10 parts or less is added. The hard rubber compound is loaded with an effective amount of abrasive grains and usually a ceramic-type microfiller (SiC,
TiN, etc.) is added and kneaded to obtain an abrasive-containing rubber compound for forming the abrasive stone material 2. In addition, the effective amount of abrasive grains depends on the use of the cutting wheel, for example, a concentration of about 50 to 150 (a concentration of 100 is 0.88 g of abrasive grains in 1 c.c. of abrasive grain-containing rubber compound). It means a range that can be freely selected.
切断砥石１の内円部材３を形成する円板状支持
材６としては、繊維強化硬化樹脂板（以下に
FRP板ということがある）、特殊鋼等の金属板、
およびこれらと同程度以上の強度特性を有するセ
ラミツク板等が例示される。なおFRP板形成用
材料としては、可及的に強度および弾性率の大き
い炭素（または、グラフアイト）繊維またはウイ
スカー、ガラス繊維、アルミナ、炭化珪素または
その他のセラミツク系繊維またはウイスカー、ア
ラミド繊維等の合成繊維、またはこれらの混合物
からなる補強有効量の繊維材料（例えば、織布、
不織布等）に、硬化接着性の液状重合硬化性材料
（通常は重合触媒およびフイラー等を含有する）
を含浸させたものが一般に使用される。該重合硬
化性材料としては、液状のフエノール樹脂、エポ
キシ樹脂、架橋性ポリスエステル樹脂、ポリイミ
ド樹脂等が例示される。該樹脂液の使用量は、含
浸繊維材料の1/2〜1/5程度が普通である。 As the disk-shaped support material 6 forming the inner circular member 3 of the cutting wheel 1, a fiber-reinforced cured resin plate (hereinafter referred to as
(sometimes referred to as FRP plate), metal plates such as special steel,
Examples include ceramic plates having strength characteristics comparable to or higher than these. The materials for forming the FRP board include carbon (or graphite) fibers or whiskers, glass fibers, alumina, silicon carbide or other ceramic fibers or whiskers, aramid fibers, etc. that have as high strength and elastic modulus as possible. A reinforcing effective amount of fibrous materials consisting of synthetic fibers, or mixtures thereof (e.g., woven fabrics,
(non-woven fabric, etc.), liquid polymerizable curable material with curing adhesive properties (usually containing a polymerization catalyst, filler, etc.)
Generally, those impregnated with Examples of the polymerizable curable material include liquid phenolic resins, epoxy resins, crosslinkable polyester resins, and polyimide resins. The amount of the resin liquid used is usually about 1/2 to 1/5 of the amount of the impregnated fiber material.
重合体系接着材料８としては、上記の接着性の
重合硬化性材料が使用できる。上記のように
FRP板形成用の樹脂液含浸繊維材料を円板状支
持材６として使用する場合は、該円板状支持材料
の表面に該樹脂液が存在するので、特に支持材の
表面に該接着材料８を塗布する必要はない。円板
状支持材６として金属板またはセラミツク板等を
使用する場合は、その重量の約1/10以下の量の該
接着性重合硬化材料が使用される。２枚以上の金
属板またはセラミツク板等を接着して内円部材３
を形成する場合には、該接着性樹脂液のかわり
に、酢酸ビニル重合体、ポリオレフイン、ポリア
ミド等の溶融接着性の重合体フイルムを該支持板
間に介在させて、加熱圧縮して同様に接着が達成
できる。 As the polymeric adhesive material 8, the above-mentioned adhesive polymeric curable materials can be used. As described above
When a fiber material impregnated with a resin liquid for forming an FRP board is used as the disk-shaped support material 6, since the resin liquid is present on the surface of the disk-shaped support material, the adhesive material 8 is particularly applied to the surface of the support material. There is no need to apply it. When a metal plate, a ceramic plate, or the like is used as the disc-shaped support member 6, the adhesive polymerized hardening material is used in an amount that is about 1/10 or less of the weight of the metal plate or the like. Inner circular member 3 is made by gluing two or more metal plates, ceramic plates, etc.
When forming a film, a melt-adhesive polymer film such as vinyl acetate polymer, polyolefin, polyamide, etc. is interposed between the support plates instead of the adhesive resin liquid, and the film is heated and compressed to adhere in the same manner. can be achieved.
第１〜２図に例示する円板状切断砥石１におい
ては、リム状砥石材２に強固に接合している内円
部材３が、芯部の硬質ゴム系支持材７およびその
両外面に接着している円板状支持材６からなる。 In the disc-shaped cutting grindstone 1 illustrated in FIGS. 1 and 2, an inner circular member 3 that is firmly joined to a rim-shaped grindstone material 2 is bonded to a hard rubber-based support material 7 in the core and both outer surfaces thereof. It consists of a disc-shaped support material 6.
この硬質ゴム支持材７の材料としては、上記の
硬質ゴムコンパウンド100部にヤング率および粒
度分布の大きいセラミツク系微細充填材（SiC
粉、TiN粉等）600重量部前後を混練したものが
有利に使用できる。これを外側の円板状支持材６
と合わせて砥石材用のリング状シート材料と共に
圧縮成形することによつて、円板状切断砥石が形
成される。従つてこの場合には、該砥石材２と該
硬質ゴム支持材７とが、ゴム系の融着を更に形成
する。 The hard rubber support material 7 is made of 100 parts of the above hard rubber compound and a ceramic fine filler (SiC) with a large Young's modulus and particle size distribution.
powder, TiN powder, etc.) can be advantageously used by kneading around 600 parts by weight. This is the outer disk-shaped support member 6.
A disc-shaped cutting whetstone is formed by compression molding together with a ring-shaped sheet material for a whetstone material. Therefore, in this case, the grindstone material 2 and the hard rubber support material 7 further form a rubber-based fusion bond.
第８図の断面図に本発明の製法に用いる成形型
を例示する。円板状の下型１２、リング状の外型
の１３および棒状の内型１４（この内型は省略す
ることも可能）からなる成形空間１５上に、上記
のような砥石材形成用のリング状シート材料およ
び接着材料を存在させた２枚以上の円板状支持材
料（または該支持材料間に硬質ゴムコンパウンド
を更に存在させて）を配置し、円板状の上型１１
を重ねて圧縮成形して、該硬質ゴム成形を硬化さ
せると共に該円板状支持間のおよび該支持材とリ
ム状砥石材との間の接着を同時に達成して、円板
状切断砥石が有利に得られる。なお、上記の圧縮
成形の条件は、上記のようなゴムコンパウンド成
分の硬化成形および構成材料の接着が達成できる
限り特に限定されない。後記の実施例を参照する
ことによつて、当業者が最適の条件を選定するこ
とが可能である。上記の圧縮成形において、砥石
材用のリング状シートの内円端が２枚以上の円板
状支持材６の間〓９および／または該支持材６の
外端部１０に流出して突出部分９，１０を形成し
て硬化する傾向があり、該砥石材２と支持材６と
の接着が一そう強化される。 The sectional view of FIG. 8 illustrates a mold used in the manufacturing method of the present invention. A ring for forming a grindstone material as described above is placed on a molding space 15 consisting of a disk-shaped lower mold 12, a ring-shaped outer mold 13, and a rod-shaped inner mold 14 (this inner mold can be omitted). Two or more disc-shaped supporting materials (or a hard rubber compound is further present between the supporting materials) are arranged, and a disc-shaped upper mold 11 is formed.
A disc-shaped cutting grindstone is advantageous because the hard rubber molding is cured by overlapping and compression molding, and adhesion is simultaneously achieved between the disc-shaped supports and between the support material and the rim-shaped grindstone material. can be obtained. Note that the conditions for the compression molding described above are not particularly limited as long as the above-mentioned curing molding of the rubber compound components and adhesion of the constituent materials can be achieved. Those skilled in the art can select optimal conditions by referring to the Examples described later. In the above compression molding, the inner circular end of the ring-shaped sheet for the grindstone material flows out between the two or more disk-shaped supporting members 6 and/or into the outer end 10 of the supporting member 6, resulting in a protruding portion. 9 and 10 tend to form and harden, and the adhesion between the grindstone material 2 and the support material 6 is further strengthened.
具体的な態様
本発明の製法によつて得られる円板状切断砥石
１の代表的な態様を第１〜５図の断面部部分図に
例示する。第１〜５図に相当する第６図の平面図
に例示するように、本発明による切断砥石１は、
リム状砥石材２が２枚以上の円板状支持材６を含
む内円部材３と強固に接着されている。中心部１
１は、切断用回転転機に該切断砥石を取り付ける
ための中空部分であり、該中空部１１は圧縮成形
時に形成するかまたは圧縮成形後に打抜き等によ
つて形成することができる。上記の円板状支持材
６としては、金属板、FRP板およびセラミツク
板等が有利に使用できるが、(イ)金属板は内円部材
３に特に靭性および剛性を附与し、(ロ)セラミツク
板は特に剛性を附与し、(ハ)FRP板は適度の靭性、
吸振性、弾性および剛性を附与し、そして(ニ)これ
らの二種類以上の支持材を組合わせた場合はそれ
らの性質を加味した特性を附与するのに役立つ。
好ましい態様においては第１〜５図に例示するよ
うに、リム状砥石材２の内円端が２枚以上の円板
状支持材６の間〓９および／または該支持材６の
外端部１０に突出部９，１０を形成して硬化して
おり、該砥石材２と内円部材３との接着が強化さ
れて切断作業中の破損が実質的に防止される。該
リム状砥石材２のリングの中心方向の厚さは、約
２〜10mm程度そして通常は約３〜５mm程度あれば
充分に実用的である。なお、本発明による切断砥
石の円板状支持材の材質は２枚の支持材の場合は
同種類のもの、そして３枚以上の支持材を使用す
る場合は対称位置に同種類のものを使用するのが
一般に好ましい。Specific Embodiments Representative embodiments of the disc-shaped cutting grindstone 1 obtained by the manufacturing method of the present invention are illustrated in partial cross-sectional views of FIGS. 1 to 5. As illustrated in the plan view of FIG. 6, which corresponds to FIGS. 1 to 5, the cutting wheel 1 according to the present invention includes:
A rim-shaped grindstone material 2 is firmly bonded to an inner circular member 3 including two or more disc-shaped support members 6. Center 1
Reference numeral 1 denotes a hollow portion for attaching the cutting whetstone to a rotary cutting machine, and the hollow portion 11 can be formed during compression molding or by punching after compression molding. Metal plates, FRP plates, ceramic plates, etc. can be advantageously used as the disc-shaped support member 6, but (a) the metal plate particularly imparts toughness and rigidity to the inner circular member 3; Ceramic boards especially provide rigidity, and (c) FRP boards have moderate toughness and
It imparts vibration absorbing properties, elasticity and rigidity, and (iv) when two or more of these types of support materials are combined, it helps to impart properties that take these properties into consideration.
In a preferred embodiment, as illustrated in FIGS. 1 to 5, the inner circular end of the rim-shaped grindstone 2 is located between two or more disk-shaped supports 6 and/or the outer end of the supports 6. The protrusions 9 and 10 are formed on the grinding wheel 10 and hardened, thereby strengthening the adhesion between the grinding stone material 2 and the inner circular member 3, thereby substantially preventing breakage during the cutting operation. It is sufficiently practical that the thickness of the rim-shaped grinding stone 2 in the direction of the center of the ring is about 2 to 10 mm, and usually about 3 to 5 mm. In addition, the disc-shaped supporting material of the cutting wheel according to the present invention is made of the same material when two supporting materials are used, and when three or more supporting materials are used, the same material is used at symmetrical positions. It is generally preferred to do so.
第１図に例示する切断砥石１は、リム状砥石材
２およびこれと強固に接合された内円部支持材３
からなり、該内円部材は芯部の硬質ゴム支持材７
と外部の円板状FRP支持材６からなり、これら
はいずれもFRP材料に含浸された接着性重合体
材料によつて接合される。この態様では、FRP
支持材およびゴム支持材の吸振性が大きいので、
被切断物のチツピングの防止に有利でありそして
ガラス、サーメツト、陶磁器質等のチツピングの
生じ易いものの切断に特に有用である。第２図に
例示する切断砥石は、該FRP支持材のかわりに
特殊鋼等の円板状金属板を支持材６として使用
し、重合体系の接着剤によつて芯部の硬質ゴム支
持材７およびリム状砥石材２と接合される。この
態様では、該接着剤およびゴム支持材７によつて
チツピングが充分に防止され、そして該円板状金
属支持材６の強度が大きいので、高速度切断等の
重研削が可能となる。第１〜２図の各態様におけ
る切断砥石部分の幅すなわち厚さは、0.5mm程度
まで薄くすることが可能であり、そして通常は約
0.6mmまたはそれ以上の厚さのものが実用的に使
用される。なお用途によつては、円板状セラミツ
ク板を支持材６として使用することもできる。 The cutting whetstone 1 illustrated in FIG.
The inner circular member includes a hard rubber support material 7 at the core.
and an external disk-shaped FRP support 6, both of which are joined by an adhesive polymer material impregnated with the FRP material. In this embodiment, FRP
Since the support material and rubber support material have high vibration absorption properties,
It is advantageous in preventing chipping of the object to be cut, and is particularly useful for cutting materials that are prone to chipping, such as glass, cermet, and ceramic materials. The cutting wheel illustrated in FIG. 2 uses a disk-shaped metal plate made of special steel as the support material 6 instead of the FRP support material, and a hard rubber support material 7 at the core is bonded with a polymer adhesive. and is joined to the rim-shaped grindstone material 2. In this embodiment, chipping is sufficiently prevented by the adhesive and the rubber support material 7, and the strength of the disk-shaped metal support material 6 is high, making heavy grinding such as high-speed cutting possible. The width or thickness of the cutting wheel portion in each of the embodiments of Figures 1-2 can be made as thin as about 0.5 mm, and is usually about
Thicknesses of 0.6 mm or more are practically used. Depending on the application, a disc-shaped ceramic plate may also be used as the support material 6.
第３図に例示する切断砥石１は、第１〜２図の
切断砥石における芯部の硬質ゴム支持材７を使用
しない形態であり、２枚の円板状支持材を重合体
系接着材料にて接合して内円部材３を形成しそし
てリム材砥石材２と該内円部材３は重合体系接着
剤にて強固に接着されている。該円板状支持材６
としては、FRP板、金属板等が有利に使用され
る。FRP板の場合は、FRP成形材料に含浸され
た接着性重合体材料によつて接合される。２枚の
金属板を接合する場合は、液状接着材または接着
性の熱可塑性樹脂フイルムが使用できる。なお用
途によつては、円板状セラミツク板を支持材６と
して使用することもできる。第３図の態様の切断
砥石部分の厚さは、0.2mm程度まで薄くすること
が可能でありそして通常は約0.3mmまたはそれ以
上の厚さのものが実用的に使用される。 The cutting wheel 1 illustrated in FIG. 3 does not use the hard rubber support material 7 in the core of the cutting wheel shown in FIGS. They are joined together to form an inner circular member 3, and the rim grindstone material 2 and the inner circular member 3 are firmly adhered with a polymer adhesive. The disk-shaped support material 6
As the material, FRP plates, metal plates, etc. are advantageously used. In the case of FRP boards, they are joined by an adhesive polymer material impregnated with FRP molding compound. When joining two metal plates, a liquid adhesive or an adhesive thermoplastic resin film can be used. Depending on the application, a disc-shaped ceramic plate may also be used as the support material 6. The thickness of the cutting wheel portion of the embodiment of FIG. 3 can be made as thin as about 0.2 mm, and usually a thickness of about 0.3 mm or more is practically used.
この態様では、使用した重合体成分によつて吸
振性が得られるので、実用的に切断時のチツピン
グが防止される。更に切断刃の厚さが特に薄いの
で、小型の小出力切断機が使用でき、被研削物の
切断ロスが少なくなり、そして被研削物に薄幅の
溝入れ加工等が可能となる特質がある。また切断
刃の厚さが薄いので高速度切断が可能となり、そ
して特に高強度の金属板支持材を採用する場合に
は一そう有効である。 In this embodiment, vibration absorbing properties are obtained by the polymer component used, so chipping during cutting can be practically prevented. Furthermore, since the thickness of the cutting blade is particularly thin, a small, low-output cutting machine can be used, cutting loss on the workpiece is reduced, and it is possible to make thin grooves on the workpiece. . Furthermore, since the thickness of the cutting blade is thin, high-speed cutting is possible, which is particularly effective when using a high-strength metal plate support material.
第４図に例示する切断砥石１は、上記の第３図
の態様において４枚以上の円板状支持材を採用し
た態様である。この場合の該円板状支持材は、
FRP板、金属板、セラミツク板等から選ぶこと
ができる。例えば、外側の支持材６と内側の支持
材６′とを異種類のものとすることによつて、両
者の支持材の特質を加味した内円支持部材３を有
する切断砥石が得られる。セラミツク板支持材を
使用する場合は、最外側でない支持材として使用
するのが一般に好ましい。切断砥石の切断刃の厚
さおよびその他の特質は第３図の切断砥石の場合
と本質的に同様である。 The cutting whetstone 1 illustrated in FIG. 4 is an embodiment in which four or more disc-shaped supporting members are employed in the embodiment shown in FIG. 3 above. In this case, the disc-shaped support material is
You can choose from FRP plates, metal plates, ceramic plates, etc. For example, by using different types of outer support material 6 and inner support material 6', a cutting wheel having an inner circular support member 3 that takes into account the characteristics of both support materials can be obtained. If ceramic plate supports are used, it is generally preferred to use them as non-outermost supports. The cutting edge thickness and other characteristics of the cutting wheel are essentially the same as those of the cutting wheel of FIG.
第５図に例示する切断砥石１は、２枚以上の外
側の円板状支持６および該支持材６よりも小径の
１枚以上の円板状支持部材６′からなる内円支持
部材３を有する切断砥石であり、その他の構成は
第４図の態様と同様である。この場合も外側の支
持材６と内側の支持材６′とを異種類のものとす
ることができる。該円板状支持材はFRP板、金
属板、セラミツク板等から選ぶことができ、最外
側の支持材はFRP板および金属板から選ぶのが
一般に好ましい。切断砥石の切断刃の厚さおよび
その他の特質は第３〜４図の切断砥石の場合と本
質的に同様である。 The cutting wheel 1 illustrated in FIG. 5 has an inner circular support member 3 consisting of two or more outer disk-shaped supports 6 and one or more disk-shaped support members 6' having a smaller diameter than the supports 6. The other configuration is the same as the embodiment shown in FIG. 4. In this case as well, the outer support member 6 and the inner support member 6' may be of different types. The disc-shaped support material can be selected from FRP plates, metal plates, ceramic plates, etc., and it is generally preferred that the outermost support material is selected from FRP plates and metal plates. The cutting edge thickness and other characteristics of the cutting wheel are essentially the same as those of the cutting wheel of FIGS. 3-4.
第７図に例示する比較例では、内円支持部材３
の芯部にFRP板または金属板の円板状支持材６
を用い、該内円部材３の外側に硬質ゴム支持材７
を用いて、リム状砥石材２と接合したものを作成
した。この切断砥石を用いて切断した結果、使用
中に外側の硬質ゴム支持材７に多数のクラツクが
生じ、実用性に乏しいものであつた。例えば、炭
素繊維織布フエノール樹脂FRP板を芯部支持部
材とした内円部材の曲げ試験値は、1400Kgｆ／平
方cmでありそして500Kgｆ／平方cmで外側の硬質
ゴム支持材にクラツクが生じた。 In the comparative example illustrated in FIG.
A disc-shaped support material 6 made of FRP plate or metal plate is attached to the core of
using a hard rubber support material 7 on the outside of the inner circular member 3.
A piece joined to the rim-shaped grinding stone material 2 was created using the following. As a result of cutting using this cutting whetstone, many cracks were generated in the outer hard rubber support material 7 during use, making it impractical. For example, the bending test value of an inner circular member using a carbon fiber woven phenolic resin FRP board as a core support member was 1400 Kgf/cm2, and cracks occurred in the outer hard rubber support material at 500 Kgf/cm2.
実施例
以下の例において量および％は、特に指定しな
い限り重量による。リム状砥石材２を形成するた
めの砥粒含有硬質ゴムコンパウンドとして、スチ
レン成分が約50モル％であるSBR100部、イオウ
80部、促進剤（アクセルＤ）３部、促進助剤
（ZnO）２部からなるゴムコンパウンドを使用し
た。該コンパウンド100部に、ダイヤモンド砥粒
（粒度＃170／200または＃270／325）40部にニツ
ケル60部をコートしてなる超砥粒500部および
SiC（粒度＃1000）またはTiN（＃1000）100部を
加えて混練した硬質ゴム系調合物を使用した。な
お、第１〜２図に例示する芯部の硬質ゴム支持材
を用いる態様では、上記のゴムコンパウンド100
部に、粒度分布の大きいSiC粉（粒度＃120〜
＃180が80％、＃220〜＃3000が20％）約600部を
加えて混練したゴム系調合物を使用した。成形型
としては、第８図に例示するような構造のものを
使用した。Examples In the examples below, amounts and percentages are by weight unless otherwise specified. As an abrasive grain-containing hard rubber compound for forming the rim-shaped grindstone material 2, 100 parts of SBR with a styrene content of about 50 mol%, sulfur
A rubber compound consisting of 80 parts accelerator, 3 parts accelerator (Accel D) and 2 parts accelerator aid (ZnO) was used. To 100 parts of the compound, 500 parts of superabrasive grains made by coating 40 parts of diamond abrasive grains (particle size #170/200 or #270/325) with 60 parts of nickel;
A hard rubber-based formulation kneaded with 100 parts of SiC (particle size #1000) or TiN (#1000) was used. In addition, in the embodiment using the hard rubber support material of the core illustrated in FIGS. 1 and 2, the above rubber compound 100
SiC powder with a large particle size distribution (particle size #120 ~
A rubber-based formulation was used in which approximately 600 parts (80% #180 and 20% #220 to #3000) were added and kneaded. A mold having a structure as illustrated in FIG. 8 was used.
例 １
ダイヤモンド砥粒＃170／200を含む硬質ゴム調
合物（コンパウンド）をロールで0.8mmに圧延し
たものから、外径150mm、内径140mmに打ち抜いた
リム状シートを作製した。Example 1 A hard rubber compound containing diamond abrasive grains #170/200 was rolled to 0.8 mm, and a rim-shaped sheet was punched out to have an outer diameter of 150 mm and an inner diameter of 140 mm.
ポリアクリロニトリル系カーボンフアイバー繊
維（平織、密度15本／25mm、厚さ0.20mm）を同重
量のレゾール型フエノール樹脂液にて含浸し40℃
にて乾燥を行いカーボンフアイバープリプレグを
作製した。外周部の硬質ゴム調合物のリム状シー
トを、外径140mmに打ち抜いた該カーボンフアイ
バープリプレグ４枚にてはさむように積層して配
置し、180℃で30分間加熱しながら50Kgｆ／cm2の
圧力で加熱圧縮成型を行い、外周縁のリム部の厚
み0.7mm、内円支持部材の厚み0.6mmの製品を得
た。このようにして、第４図に例示するような切
断砥石を製造した。 Polyacrylonitrile carbon fiber (plain weave, density 15 pieces/25 mm, thickness 0.20 mm) was impregnated with the same weight of resol type phenolic resin liquid at 40°C.
A carbon fiber prepreg was produced by drying the carbon fiber prepreg. A rim-shaped sheet made of a hard rubber compound on the outer periphery was sandwiched between four sheets of carbon fiber prepreg punched to an outer diameter of 140 mm and placed in a layered manner, and heated at 180°C for 30 minutes while applying a pressure of 50 kgf/ cm2. Heat compression molding was performed to obtain a product with a rim portion on the outer periphery having a thickness of 0.7 mm and an inner circle support member having a thickness of 0.6 mm. In this way, a cutting wheel as illustrated in FIG. 4 was manufactured.
該切断砥石の内円支持部材の曲げ強さは、7540
Kgｆ／cm2、弾性率は60×104Kgｆ／cm2であつた。
この切断砥石を使用して、アルミナセラミツクス
（純度99.2％、曲げ強さ4860Kgｆ／cm2ヌープ硬さ
1800）を切込み深さ３mm、送り速度12mm／分の条
件で、注水しながら切断作業を行つた。その結
果、切れ味は極めて良好で曲がりや破損がなく、
チツピングも認められず、砥石の摩耗は極めて少
なく総延長250ｍに達した。 The bending strength of the inner circle support member of the cutting wheel is 7540
Kgf/cm 2 , and the elastic modulus was 60×10 4 Kgf/cm 2 .
Using this cutting wheel, alumina ceramics (purity 99.2%, bending strength 4860Kgf/cm 2 Knoop hardness
1800) was cut at a cutting depth of 3 mm and a feed rate of 12 mm/min while water was being poured. As a result, the sharpness is extremely good and there is no bending or damage.
No chipping was observed, and the wear of the grindstone was extremely low, reaching a total length of 250 m.
例 ２
ダイヤモンド砥粒270／325を含む硬質ゴム調合
物をロールで0.9mmに圧延したものから外径220
mm、内径210mmに打ち抜いたリム状シートを作製
した。厚み0.3mmの鋼板（SK−３）を外径210mm、
内径76.2mmに打ち抜いたもの２枚の間に、レゾー
ル型フエノール樹脂液を厚み0.2mm注入し積層鋼
板を作製した。この積層鋼板にて外周部の硬質ゴ
ム調合物のリム状シートをはさむように配置し
180℃で30分間加熱しながら50Kgｆ／cm2の圧力で
加熱圧縮成型を行い、外周縁のリム部の厚み0.8
mm、コア部の0.7mmの製品を得た。このようにし
て第３図に例示するような切断砥石を製造した。
該切断砥石の内円支持部材の曲げ強さは116300Kg
ｆ／cm2、弾性率は291×104Kgｆ／cm2であつた。Example 2 A hard rubber compound containing diamond abrasive grains 270/325 is rolled to a diameter of 0.9 mm to an outer diameter of 220 mm.
A rim-shaped sheet was produced by punching it to a diameter of 210 mm. A steel plate (SK-3) with a thickness of 0.3 mm and an outer diameter of 210 mm.
A laminated steel plate was produced by injecting resol-type phenol resin liquid to a thickness of 0.2 mm between two sheets punched out to have an inner diameter of 76.2 mm. These laminated steel plates are arranged so as to sandwich a rim-shaped sheet of hard rubber compound on the outer periphery.
Heat compression molding was performed at a pressure of 50Kgf/ cm2 while heating at 180℃ for 30 minutes, and the thickness of the outer rim part was 0.8
A product with a core diameter of 0.7 mm was obtained. In this way, a cutting wheel as illustrated in FIG. 3 was manufactured.
The bending strength of the inner circle support member of this cutting wheel is 116300Kg
f/cm 2 and elastic modulus was 291×10 4 Kgf/cm 2 .
この切断砥石を使用して、砥石周速940ｍ／分、
送り速度50mm／分、切込み量2.5mmにて、ジルコ
ニヤ焼結体（HIP法、曲げ強さ14000Kgｆ／cm2、
ヌーブ硬さ1180）を注入しながら切断作業を行つ
た。その結果、切れ味は極めて良好で曲がりや破
損がなく、チツピングも認められず、砥石の磨耗
は極めて少なく研削比は8000に達した。 Using this cutting whetstone, the circumferential speed of the whetstone is 940 m/min.
Zirconia sintered body (HIP method, bending strength 14000Kgf/cm 2 ,
The cutting work was performed while injecting Noob hardness 1180). As a result, the sharpness was extremely good, with no bending or breakage, and no chipping was observed, and the grinding wheel had extremely little wear and a grinding ratio of 8000.
例 ３
上記とSiC粉を混練した芯部支持材用のゴム調
合物を使用した。外側の支持材用には薄い炭素繊
維織物をレゾール型フエノール樹脂液にて含浸し
たもの２枚を使用した。その他は例１と同様に実
施して、第１図に例示するような切断砥石を製造
した。その結果、0.5mm厚、外径150mmの砥石が成
形でき、切断作業に耐えるものであつた。内円支
持部を切り出してスパン30mmで曲げ試験を行つた
ところ、5000Kgｆ／cm2であつた。Example 3 A rubber composition for a core support material was used by kneading the above and SiC powder. Two thin carbon fiber fabrics impregnated with a resol-type phenolic resin liquid were used for the outer support material. Other procedures were carried out in the same manner as in Example 1 to produce a cutting wheel as illustrated in FIG. As a result, a grindstone with a thickness of 0.5 mm and an outer diameter of 150 mm was able to be formed and was able to withstand cutting operations. When the inner circular support part was cut out and a bending test was conducted with a span of 30 mm, the bending strength was 5000 Kgf/cm 2 .
例 ４
含浸炭素繊維織布のかわりに、特殊鋼の薄板を
用いそして接着剤としてレゾール型フエノール樹
脂液を使用するほかは、例３と同様に実施して第
２に例示するような切断砥石を製造した。得られ
た砥石の強度および剛性は、例３による砥石より
も優れたものであつた。Example 4 The same procedure as Example 3 was carried out except that a special steel thin plate was used instead of the impregnated carbon fiber woven fabric and a resol type phenolic resin liquid was used as the adhesive. Manufactured. The strength and rigidity of the obtained grinding wheel were superior to that of the grinding wheel according to Example 3.
例 ５
樹脂液含浸した薄い炭素繊維織布４妹を用いそ
して薄い砥石材用のリム状シートを使用し、その
他は例１と同様に実施した。リム状砥石材の厚さ
が0.4mmの切断砥石が得られた。Example 5 The same procedure as in Example 1 was carried out except that a thin carbon fiber woven fabric impregnated with a resin liquid and a thin rim-shaped sheet for a grinding stone were used. A cutting wheel with a rim-shaped wheel material thickness of 0.4 mm was obtained.
例 ６
薄い特殊鋼板２枚および薄い砥石材用のリム状
シートを使用し、その他は例２と同様に実施し
た。得られた切断砥石の砥石材の厚さは0.25mm
で、薄板のひずみは接着剤層が吸収するため、寸
法精度は良好であつた。Example 6 The same procedure as in Example 2 was carried out except that two thin special steel plates and a thin rim-shaped sheet for grinding stones were used. The thickness of the cutting wheel material obtained was 0.25 mm.
Since the strain on the thin plate was absorbed by the adhesive layer, the dimensional accuracy was good.
例 ７
砥石材用の厚さ0.8mmのリム状シート、フエノ
ール樹脂液含浸炭素繊維織布２枚、およびこれよ
りの径の小さい芯部支持材用の厚さ0.4mmのアル
ミナ円板を使用し、その他は例１と同様に実施し
た。このようにして、第５図に例示するような構
造の切断砥石を製造した。リム状砥石材の厚さが
0.7mm、内円支持部材の厚さが0.6mmの砥石が得ら
れ、その性能は充分に満足なものであつた。Example 7 A 0.8 mm thick rim-shaped sheet for grinding wheels, two sheets of carbon fiber woven fabric impregnated with phenol resin liquid, and a 0.4 mm thick alumina disk for core support material with a smaller diameter are used. The rest was carried out in the same manner as in Example 1. In this way, a cutting wheel having a structure as illustrated in FIG. 5 was manufactured. The thickness of the rim-shaped grindstone material is
A grindstone with a thickness of 0.7 mm and an inner circle support member of 0.6 mm was obtained, and its performance was fully satisfactory.
第１〜５図は、本発明による切断砥石の構造を
例示する断面部分図である。第６図は、本発明に
よる切断砥石を例示する平面図である。第７図
は、比較例として製作した切断砥石の断面部分図
である。第８図は、本発明の製法に用いる成形用
金型を例示する断面図である。
１……切断砥石、２……リム状砥石材、３……
内円支持部材、６，６′……円板状支持材、７…
…芯部支持材、８……接着層、９，１０……突出
部、１５……金型の成形空間。
1 to 5 are partial cross-sectional views illustrating the structure of the cutting wheel according to the present invention. FIG. 6 is a plan view illustrating a cutting wheel according to the present invention. FIG. 7 is a partial cross-sectional view of a cutting wheel manufactured as a comparative example. FIG. 8 is a cross-sectional view illustrating a molding die used in the manufacturing method of the present invention. 1... Cutting whetstone, 2... Rim-shaped grindstone material, 3...
Inner circle support member, 6, 6'... Disc-shaped support member, 7...
... core support material, 8 ... adhesive layer, 9, 10 ... protrusion, 15 ... molding space of the mold.
Claims (1)
パウンドのリング状シート材料、および該リング
状シートのリング状空間部に該リングの内径と同
程度の外径を有する内円部支持材形成用の２枚以
上の円板状支持材を含む材料を重合体系接着材料
を存在させて配置し、配置させた該材料を円板状
切断砥石用の成形空間を有する金型内にて圧縮成
形して、該リム状砥石材と該内円部支持材とを重
合体系接着材料によつて一体化して接合すること
を特徴とする、円板状切断砥石の製法。 ２ 該円板状支持材が繊維強化硬化樹脂板、金属
板およびセラミツク板から選ばれる一種類以上の
支持材である、特許請求の範囲第１項の製法。 ３ 該円板状支持材の間に芯部の硬質ゴム系材料
を配置する、特許請求の範囲第１項または第２項
の製法。 ４ 該リム状砥石材のゴム成分と内円部支持材の
接着材料とが融着硬化によつて接合している、特
許請求の範囲第１，２または３項の製法。 ５ リング状砥石材の内円端が２枚以上の円板状
支持材の間〓および／または該支持材の外端部に
突出部分を形成して接合している、特許請求の範
囲第１，２，３または４項の製法。 ６ 該リング状シート材料の内円端部を２枚以上
の該円板状支持材ではさんで配置しそして圧縮成
形する、特許請求の範囲第１〜５項のいずれかの
製法。[Scope of Claims] 1. A ring-shaped sheet material of an abrasive grain-containing hard rubber compound for forming a rim-shaped grinding stone material, and an inner ring having an outer diameter comparable to the inner diameter of the ring in a ring-shaped space of the ring-shaped sheet. A mold having a molding space for forming a disk-shaped cutting wheel by arranging a material containing two or more disk-shaped supporting materials for forming a circular part supporting material in the presence of a polymer-based adhesive material, and placing the arranged material in a mold having a molding space for a disk-shaped cutting grindstone. 1. A method for manufacturing a disc-shaped cutting whetstone, characterized in that the rim-shaped whetstone material and the inner circle support material are integrally joined by a polymeric adhesive material by compression molding inside the disc-shaped cutting whetstone. 2. The manufacturing method according to claim 1, wherein the disc-shaped support material is one or more types of support material selected from fiber-reinforced cured resin plates, metal plates, and ceramic plates. 3. The manufacturing method according to claim 1 or 2, wherein the hard rubber material of the core is arranged between the disc-shaped supporting members. 4. The manufacturing method according to claim 1, 2 or 3, wherein the rubber component of the rim-shaped grindstone material and the adhesive material of the inner circle support material are bonded by fusion curing. 5. Claim 1, wherein the inner circular end of the ring-shaped grindstone is joined by forming a protrusion between two or more disc-shaped supporting members and/or at the outer end of the supporting members. , 2, 3 or 4. 6. The manufacturing method according to any one of claims 1 to 5, wherein the inner circular end portion of the ring-shaped sheet material is placed between two or more of the disc-shaped supporting members and compression molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10657387A JPS63272467A (en) | 1987-04-30 | 1987-04-30 | Manufacture of disc-shaped cutting grindstone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10657387A JPS63272467A (en) | 1987-04-30 | 1987-04-30 | Manufacture of disc-shaped cutting grindstone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63272467A JPS63272467A (en) | 1988-11-09 |
| JPH052468B2 true JPH052468B2 (en) | 1993-01-12 |
Family
ID=14436984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10657387A Granted JPS63272467A (en) | 1987-04-30 | 1987-04-30 | Manufacture of disc-shaped cutting grindstone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63272467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0984128A (en) * | 1995-09-20 | 1997-03-28 | Nec Corp | Communication equipment with voice recognizing function |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6358133B1 (en) * | 1998-02-06 | 2002-03-19 | 3M Innovative Properties Company | Grinding wheel |
-
1987
- 1987-04-30 JP JP10657387A patent/JPS63272467A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0984128A (en) * | 1995-09-20 | 1997-03-28 | Nec Corp | Communication equipment with voice recognizing function |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63272467A (en) | 1988-11-09 |
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