JP3184519B2 - Grinding machine with cavity with layered coarse grains - Google Patents
Grinding machine with cavity with layered coarse grainsInfo
- Publication number
- JP3184519B2 JP3184519B2 JP50641791A JP50641791A JP3184519B2 JP 3184519 B2 JP3184519 B2 JP 3184519B2 JP 50641791 A JP50641791 A JP 50641791A JP 50641791 A JP50641791 A JP 50641791A JP 3184519 B2 JP3184519 B2 JP 3184519B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- grit
- cavity
- grinding tool
- tool according
- 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
Classifications
-
- 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
- B24D3/04—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 inorganic
- B24D3/06—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 inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】 発明の背景 本発明は一般に、色々な種類の材料を研磨するのに使
用される研削砥石に関する。より詳細には、本発明は、
焼結タングステンカーバイドのような粉砕され焼結され
た耐熱金属の粗粒、及び、支持用基部材に半田付けによ
って（或いは他の方法によって）接合することができる
同様な硬粒子を利用する。Description: BACKGROUND OF THE INVENTION The present invention relates generally to grinding wheels used to polish various types of materials. More specifically, the present invention provides
Utilize coarse particles of ground and sintered refractory metal, such as sintered tungsten carbide, and similar hard particles that can be joined to the support base by soldering (or other methods).
球状の金属表面に個々の金属粗粒を磁気的に配向させ
るのは、従来技術において周知である。かかる用途にお
いて、実質的に全ての粗粒がその最小横断面を越える代
表的な長さを有している金属粗粒が使用されてきた。そ
の際、金属表面が磁場を受けることによって、粗粒は研
磨表面に磁気的に配向され、これにより、粗粒の実質的
に全ての最長軸線は、湾曲した金属表面からほぼ半径方
向外方に延びる。かかる従来技術の装置は、所定の寸法
及び形体の突起を利用している。これらの突起は金属の
母材に適用され或いは金属の母材から形成され、次い
で、金属の粗粒で防護される。次いで、突起の周囲に粗
粒を半田付けした（例えば、米国特許第3,918,217号に
記載された方法を参照せよ）。The magnetic orientation of individual metal grit on spherical metal surfaces is well known in the prior art. In such applications, metal grit has been used in which substantially all of the grit has a typical length exceeding its minimum cross-section. In doing so, the grit is magnetically oriented on the polished surface by the magnetic surface being subjected to the magnetic field, such that substantially all of the longest axis of the grit is substantially radially outward from the curved metal surface. Extend. Such prior art devices utilize protrusions of a predetermined size and configuration. These projections are applied to or formed from a metal matrix and are then protected by a metal grit. The grit was then soldered around the protrusions (see, for example, the method described in US Pat. No. 3,918,217).
これらの従来技術の装置は、幾つかの欠点を有する。
例えば、最小横断面を越える長さの粗粒を利用するた
め、粗粒は、磁石が付けられた箇所から半径方向外方に
延びる。この制限は、（特定を助めるため）より長い粗
粒の使用を必要としており、また、研磨された材料が突
起に捕捉され突起に負荷を及ぼすことになる。さらに、
磁場により、金属の粗粒は、各突起の最外周に集めら
れ、基部材の突起の間に置かれた平滑な領域には粗粒が
なくなる。かかる特別な粗粒の形成は、粗粒を破砕させ
て工具の寿命を減少させる。These prior art devices have several disadvantages.
For example, in order to utilize grit of a length exceeding the minimum cross-section, the grit extends radially outward from the location where the magnet is attached. This limitation requires the use of longer grit (to aid in identification) and also results in the polished material being trapped by the projections and placing a load on the projections. further,
Due to the magnetic field, the metal coarse particles are collected on the outermost periphery of each projection, and the smooth area placed between the projections of the base member has no coarse particles. The formation of such special grit will break the grit and reduce tool life.
発明の概要 本発明は、色々な種類の材料を研磨するのに使用され
る研削砥石に関する。この工具は、性能を向上させ且つ
寿命を延ばしつつ、従来技術の装置の利点の全てを維持
している。SUMMARY OF THE INVENTION The present invention relates to a grinding wheel used to polish various types of materials. This tool retains all of the advantages of the prior art devices while improving performance and extending life.
従って、本発明の目的は、研削砥石の平滑なランド領
域に少量の金属粗粒をほぼ均等に且つ層状に提供して、
研削砥石の切削面の寿命を延ばすことにある。Therefore, an object of the present invention is to provide a small amount of metal coarse particles almost uniformly and in a layered manner in a smooth land area of a grinding wheel,
An object of the present invention is to extend the life of the cutting surface of a grinding wheel.
本発明の第２の目的は、研削砥石の切削面から研磨さ
れた材料の除去を向上させることによって、研削砥石の
研削作用を促進させることにある。A second object of the present invention is to promote the grinding action of a grinding wheel by improving the removal of polished material from the cutting surface of the grinding wheel.
本発明の第３の目的は、より小さな研磨粒子を使用し
つつ研削砥石に向上した切削能力を与え、これにより、
加工品をより精巧な感触にすることにある。A third object of the present invention is to provide the grinding wheel with improved cutting power while using smaller abrasive particles,
The aim is to make the work more elaborate feel.
本発明の第４の目的は、接触面から非接触面への熱分
布を改善するとともに、粗粒粒子の分布の不足による金
属面からのトルクの低減により、従来技術の装置よりも
より低温でより効果的に作動する切削工具を提供するこ
とにある。A fourth object of the present invention is to improve the heat distribution from the contact surface to the non-contact surface and to reduce the torque from the metal surface due to the lack of distribution of the coarse particles, thereby lowering the temperature at lower temperatures than the prior art device. It is to provide a cutting tool that operates more effectively.
本発明の第５の目的は、経済的に製造できる切削工具
を提供することにある。A fifth object of the present invention is to provide a cutting tool that can be manufactured economically.
これらの目的は、突起の代わりに、金属面に沿って分
布するキャビティ又は凹部を設けることによって、少な
くとも部分的に達成される。この新規な形体の金属面に
磁場が加えられるとき、金属の粗粒は金属面の平滑なラ
ンド領域に沿ってほぼ均等に分布され、キャビティから
粗粒を除去する。These objects are at least partially achieved by providing cavities or depressions distributed along the metal surface instead of protrusions. When a magnetic field is applied to the metal surface of the new feature, the metal grit is distributed approximately evenly along the smooth land area of the metal surface, removing grit from the cavity.
図面の簡単な説明 本発明の特徴は、添付した請求の範囲に特に示されて
いる。本発明は、その目的及び利点とともに、添付した
図面に関連して以下の説明を参照することによって明瞭
に理解されるであろう。BRIEF DESCRIPTION OF THE DRAWINGS The features of the present invention are particularly pointed out in the appended claims. The invention, together with its objects and advantages, will be more clearly understood by reference to the following description when taken in conjunction with the accompanying drawings.
図１は、 金属基部材、および、表面に沿ってほぼ均等に分布した
焼結した金属粗粒を示した、“コンター砥石”として通
常知られている研削砥石の１つの種類の側面図である。FIG. 1 is a side view of one type of grinding wheel, commonly known as a "contour wheel", showing a metal substrate and sintered metal grit substantially evenly distributed along the surface. .
図２は、ランド状の焼結された金属粗粒、並びに、金
属粗粒の凹形空隙を示した、支持用基部材の拡大図であ
る。FIG. 2 is an enlarged view of a supporting base member showing land-shaped sintered metal coarse particles and concave voids of the metal coarse particles.
図３は、支持用基部材および粗粒突起の横断面図であ
る。FIG. 3 is a cross-sectional view of the supporting base member and the coarse-grained projection.
発明の詳細な説明 図面をより詳細に参照すると、金属の基部材１と、ハ
ンドル２と、支持用基部材３とを有する完成工具が、図
１に示されている。“コンター（contour）砥石”とし
て知られている、図１に示した研削砥石は、本発明の１
つの実施例にすぎないことに留意すべきである。当業者
は、種々の砥石形状（例えば、円錐形又は円筒形）を使
用することができることを理解するであろう。DETAILED DESCRIPTION OF THE INVENTION Referring to the drawings in more detail, a completed tool having a metal base 1, a handle 2, and a support base 3 is shown in FIG. The grinding wheel shown in FIG. 1, known as a “contour wheel”, is one embodiment of the present invention.
It should be noted that this is only one example. One skilled in the art will appreciate that various wheel shapes (eg, conical or cylindrical) can be used.
次に図２を参照すると、支持用基部材３の“ランド”
領域５の平滑な部分にほぼ均等に分布した金属の粗粒が
示されている。粗粒は基部材３のキャビティ６にはない
ことに留意すべきである。図３は、磁化された金属粗粒
の配列を示している。粗粒は、中央点から半径方向外方
に延びるように拘束されるのではなく、垂直方向及び水
平方向に位置決めされた粗粒の相互連結層を形成する。
僅かな粗粒粒子が離脱したとき、この層状効果により、
別の粗粒粒子を露出させることができる。Referring now to FIG. 2, the "land" of the support base member 3 is shown.
The coarse particles of the metal distributed almost evenly in the smooth part of the region 5 are shown. It should be noted that coarse particles are not present in the cavity 6 of the base member 3. FIG. 3 shows an arrangement of magnetized metal coarse particles. The coarse grains are not constrained to extend radially outward from the center point, but rather form a vertically and horizontally positioned interconnect layer of coarse grains.
When a few coarse particles are separated, this layer effect
Additional coarse particles can be exposed.
再び図１を参照すると、本発明は、支持用基部材３に
沿って均等に或いは不均等に分布し周囲が金属の基部材
１に面したキャビティ又は凹部の使用を教示している。
これらのキャビティは、丸形や矩形等のような都合の良
い形状のものでよい。砥石の所望の作用及び使用される
研磨材の寸法に適合するように、キャビティの間隔を変
えることができる。キャビティは、種々の設計の組み合
わせに応じて、直線の列をなして設けても良いし互い違
いに設けても良い。当業者にとっては、広範囲で研削砥
石を達成するためにキャビティの寸法及び間隔を変える
ことができる。かかる範囲は、例えば研磨材の寸法或い
は作業者が作業する所定の切削領域の変動を可能にす
る。さらに、キャビティは、砥石の切削能力を一層高め
るという重要な構造上の利点を提供する。砥石によって
除去された材料は、入り込む自由領域をキャビティ内に
有する。砥石との接触点において研磨された材料の部分
は、個々のキャビティ内に移動される。研削砥石が高速
で回転すると、研磨された材料は遠心力によってキャビ
ティから排出される。これに対して、従来技術の装置に
おける除去された材料は、研磨突起に捕捉されて引っ掛
かり、砥石の切削能力を減少させる傾向がある。さら
に、幾つかの在来の砥石は、外側作動面に穴を有する。
かかる形体は砥石の強度を物理的に減少させるばかりで
なく、研磨された材料が穴を通過して砥石の内面に蓄積
し穴を塞いでしまう。さらに、穴付き砥石に加えられる
磁場により、粗粒は、金属面に平らに効果なく配置され
る。本発明のキャビティは、蓄積された研磨された材料
の影響を改善することによって、砥石のより強力な切削
作用を可能にする。Referring again to FIG. 1, the present invention teaches the use of cavities or recesses distributed evenly or non-uniformly along the support base member 3 and facing the metal base member 1.
These cavities may be of any convenient shape, such as round or rectangular. The spacing of the cavities can be varied to suit the desired effect of the grinding wheel and the dimensions of the abrasive used. The cavities may be provided in linear rows or staggered, depending on the combination of the various designs. For those skilled in the art, the dimensions and spacing of the cavities can be varied to achieve a wide range of grinding wheels. Such a range allows, for example, a variation in the size of the abrasive or a predetermined cutting area in which the operator works. In addition, the cavity offers the important structural advantage of further enhancing the cutting ability of the wheel. The material removed by the grindstone has a free area in the cavity that penetrates. The portion of the polished material at the point of contact with the grindstone is moved into individual cavities. As the grinding wheel rotates at high speed, the polished material is ejected from the cavity by centrifugal force. In contrast, the removed material in prior art devices tends to be trapped and caught by the polishing projections, reducing the cutting ability of the grindstone. In addition, some conventional wheels have holes in the outer working surface.
Such a feature not only physically reduces the strength of the grindstone, but also causes the polished material to pass through the hole and accumulate on the inner surface of the grindstone to plug the hole. In addition, the magnetic field applied to the whetstone causes the coarse particles to be placed flat and ineffective on the metal surface. The cavity of the present invention allows for a more powerful cutting action of the wheel by improving the effect of accumulated polished material.
図１に示すように構成された支持用基部材３につい
て、磁場、次いで焼結された金属の粗粒が加えられ、そ
の結果、金属の粗粒は図３に示すように位置決めされ
る。金属の粗粒は、キャビティの内面にではなく、支持
用基部材のランド領域にほぼ均等に分布されている。従
来技術は、突起間のランド領域にではなく突起の最外周
に集められた粗粒の形成を教示している。これは、不連
続領域に自然に集中する磁場の屈曲線の結果として、輪
郭が急激に変化する金属外面上の箇所に金属粗粒が押し
進められるという事実による。従って、本発明の粗粒は
長さが最小横断面を越えるように選定する必要がないの
で、従来技術のものと比較して、より小さな金属粗粒を
利用することができる。切削隙間の減少が砥石を制御し
易くし加工品により精巧な感触を残すので、小さな寸法
の金属粗粒は砥石の切削能力を向上させる。また、従来
技術の長い粒子は、破損を受け易い。A magnetic field and then a sintered metal grit are applied to the supporting base member 3 configured as shown in FIG. 1 and, as a result, the metal grit is positioned as shown in FIG. The coarse metal particles are distributed substantially evenly on the land area of the supporting base member, not on the inner surface of the cavity. The prior art teaches the formation of coarse particles collected at the outermost periphery of the protrusion, rather than at the land area between the protrusions. This is due to the fact that metal grit is pushed to locations on the metal outer surface where the contour changes rapidly as a result of the bending lines of the magnetic field that naturally concentrate in the discontinuous regions. Thus, smaller metal grit can be utilized compared to the prior art, as the grit of the present invention need not be selected to have a length exceeding the minimum cross-section. Small sized metal grit enhances the cutting ability of the wheel, as reducing the cutting gap makes the wheel easier to control and leaves a more refined feel to the workpiece. Also, long particles of the prior art are susceptible to breakage.
本発明の相互に連結された層状の粗粒は、以下の３つ
の理由で研削砥石の寿命を長くする。まず第１に、層状
の形体では、粗粒の一部が剥がれると、その下の別の粗
粒が切削に供される。第２に、支持用基部材のくぼみ効
果は、工具をより低温でより効果的に作動させる。これ
は、凹部付き砥石の内面が平滑な面よりも大きな表面積
を包囲するという事実による。この大きな表面積は、金
属面への伝熱能力を向上させ、かくして、砥石を使用す
るときの熱の消散を改善する。第３に、より小さい粗粒
が、従来技術の工具よりも支持用基部材から短い距離延
びている。かかる短い距離は、トルク、従って、個々の
粗粒粒子に加えられる力を低減させ、作業に要するエネ
ルギを減少させる。しかしながら、小さな粗粒粒子の数
の増加により、より多くの仕事が達成される。The interconnected layered grit of the present invention extends the life of the grinding wheel for three reasons. First, in the layered form, when a part of the coarse particles is peeled off, another coarse particle under the coarse particles is subjected to cutting. Second, the indentation effect of the support base allows the tool to operate more efficiently at lower temperatures. This is due to the fact that the inner surface of the recessed wheel surrounds a larger surface area than the smooth surface. This large surface area enhances the ability to transfer heat to the metal surface, and thus improves heat dissipation when using the grinding wheel. Third, smaller grit extends a shorter distance from the supporting base than prior art tools. Such a short distance reduces the torque, and thus the force applied to the individual coarse particles, and reduces the energy required for the operation. However, more work is achieved by increasing the number of small coarse particles.
上述のように、本発明の伝熱能力は、さらに別の理由
よっても新規である。図３から分かるように、粗粒粒子
の遠くの部分は、個々のキャビティを覆っている。この
新規な構造は、個々のキャビティが自然の放熱子として
作用するのを可能にする。粗粒粒子からの熱は、粗粒の
遠くの端部からキャビティまで伝達され、次いで、砥石
の回転は、凹部の内面と外面の両方を冷却する。As mentioned above, the heat transfer capability of the present invention is novel for yet another reason. As can be seen from FIG. 3, the remote part of the coarse particles covers the individual cavities. This novel structure allows individual cavities to act as natural heatsinks. Heat from the coarse particles is transferred from the far end of the coarse particles to the cavity, and the rotation of the grindstone then cools both the inner and outer surfaces of the recess.
本発明は又、研磨具のより経済的な製造を可能にす
る。かかる経済性は、上述のような、在来の砥石よりも
小さな研磨粒子の効果的な利用によって達成される。The present invention also allows for more economical manufacture of abrasive tools. Such economy is achieved by the efficient use of smaller abrasive particles than conventional grinding wheels, as described above.
本発明の好適な実施例では、金属の粗粒は、支持用基
部材に半田付けによって（或いは他の手段によって）接
合することができる焼結されたタングステンカーバイド
から構成される。支持用基部材は通常、軟鋼又は、最終
装置の種々の構成要素を結合するのに使用される半田付
け金属よりも低い融解温度を有する鉄母材合金から構成
される（参照文献として本出願において引用された米国
特許第3,918,217号を参照のこと）。In a preferred embodiment of the invention, the metal grit is comprised of sintered tungsten carbide that can be joined to the supporting base by soldering (or by other means). The supporting base member is typically composed of mild steel or an iron base alloy having a lower melting temperature than the solder metal used to join the various components of the final device. See US Patent No. 3,918,217, cited).
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−197592（ＪＰ，Ａ) 特開 昭63−232934（ＪＰ，Ａ) 特開 平１−271176（ＪＰ，Ａ) 特開 平２−100876（ＪＰ，Ａ) 特開 昭59−42274（ＪＰ，Ａ) 実開 昭62−7361（ＪＰ，Ｕ) 実開 昭62−65161（ＪＰ，Ｕ) 米国特許3918217（ＵＳ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B24D 3/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-197592 (JP, A) JP-A-63-232934 (JP, A) JP-A-1-271176 (JP, A) JP-A-2- 100876 (JP, A) JP-A-59-42274 (JP, A) JP-A-62-7361 (JP, U) JP-A-62-65161 (JP, U) US Patent 3,918,217 (US, A) (58) Field surveyed (Int. Cl. 7 , DB name) B24D 3/00
Claims (9)
領域によって分離された複数のキャビティを有する鉄又
は合金鉄部材と、 ランド領域にほぼ均一に分布した金属の粗粒とを含み、
該金属の粗粒は、半田付け金属によって基部材に接合さ
れた粒子を有しており、金属の粗粒は、磁場を加えるこ
とによって、キャビティにではなくランド領域に位置決
めされている、研削工具。An iron or ferro-alloy member having a plurality of cavities separated by a substantially continuous and substantially smooth outer land region; and a coarse metal grain substantially uniformly distributed in the land region.
A grinding tool, wherein the metal grit comprises particles bonded to the base member by soldering metal, and the metal grit is positioned in the land area rather than in the cavity by applying a magnetic field. .
ら作られている、請求の範囲第１項に記載の研削工具。2. The grinding tool according to claim 1, wherein the coarse particles of the metal are made of tungsten carbide.
粒からキャビティに伝達されることによって消散され
る、請求の範囲第２項に記載の研削工具。3. The grinding tool according to claim 2, wherein the heat generated by the operation of the tool is dissipated by being transferred from the coarse particles of the metal to the cavity.
されている、請求の範囲第３項に記載の研削工具。4. The grinding tool according to claim 3, wherein the cavities are distributed at uniform intervals in the base member.
である、請求の範囲第４項に記載の研削工具。5. The grinding tool according to claim 4, wherein the cavity is of non-uniform size and shape.
ある、請求の範囲第４項に記載の研削工具。6. The grinding tool according to claim 4, wherein the cavity is of uniform size and shape.
請求の範囲第４項に記載の研削工具。7. The cavity is concave or hemispherical,
The grinding tool according to claim 4.
覆っている、請求の範囲第４項に記載の研削工具。8. The grinding tool according to claim 4, wherein the far end of the metal grit covers the cavity.
領域によって分離された複数のキャビティを有する鉄又
は合金鉄部材と、 ランド領域にほぼ均一に分布した金属の粗粒とを含み、
該金属の粗粒は、半田付け金属によって粗粒自体に或い
は基部材に相互に連結された層をなして接合された粒子
を有しており、これにより、個々の金属粗粒が使用によ
り剥がれ或いは摩滅すると、他の粗粒が使用され、粗粒
は、磁場を加えることによってキャビティにではなくラ
ンド領域に位置決めされている、研削工具。9. An iron or ferro-alloy member having a plurality of cavities separated by a substantially continuous and substantially smooth outer land region; and a coarse metal grain substantially uniformly distributed in the land region.
The grit of the metal comprises particles joined in a layer interconnected to the grit itself or to the base member by the soldering metal, whereby the individual grit of the metal is peeled off by use. Or, if worn, other grit is used, the grit being positioned in the land area rather than in the cavity by applying a magnetic field.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US51139390A | 1990-04-18 | 1990-04-18 | |
| US511,393 | 1990-04-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05500778A JPH05500778A (en) | 1993-02-18 |
| JP3184519B2 true JP3184519B2 (en) | 2001-07-09 |
Family
ID=24034712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50641791A Expired - Lifetime JP3184519B2 (en) | 1990-04-18 | 1991-03-15 | Grinding machine with cavity with layered coarse grains |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0479973B1 (en) |
| JP (1) | JP3184519B2 (en) |
| AT (1) | ATE131096T1 (en) |
| AU (1) | AU647470B2 (en) |
| BR (1) | BR9105723A (en) |
| CA (1) | CA2058960C (en) |
| DE (1) | DE69115214T2 (en) |
| DK (1) | DK0479973T3 (en) |
| ES (1) | ES2079651T3 (en) |
| WO (1) | WO1991016175A1 (en) |
| ZA (1) | ZA912669B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5239784A (en) * | 1990-04-18 | 1993-08-31 | B & J Manufacturing Company | Cavitied abrading device with smooth lands area and layered grit |
| JP3260764B2 (en) * | 1995-06-07 | 2002-02-25 | サン‐ゴバン アブレイシブズ，インコーポレイティド | Cutting tools with patterned cutting surfaces |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918217A (en) * | 1972-07-24 | 1975-11-11 | Lloyd R Oliver & Company | Abrading device with protrusions on metal bonded abrasive grits |
| DE2758285A1 (en) * | 1977-12-27 | 1979-06-28 | Honda Motor Co Ltd | Grinding wheel mfg. process - has hub blank machined and balanced before applying peripheral abrasive coating |
| US4821461A (en) * | 1987-11-23 | 1989-04-18 | Magnetic Peripherals Inc. | Textured lapping plate and process for its manufacture |
| US4908046A (en) * | 1989-02-14 | 1990-03-13 | Wiand Ronald C | Multilayer abrading tool and process |
-
1991
- 1991-03-15 BR BR919105723A patent/BR9105723A/en not_active IP Right Cessation
- 1991-03-15 DE DE69115214T patent/DE69115214T2/en not_active Expired - Lifetime
- 1991-03-15 JP JP50641791A patent/JP3184519B2/en not_active Expired - Lifetime
- 1991-03-15 AT AT91907212T patent/ATE131096T1/en not_active IP Right Cessation
- 1991-03-15 ES ES91907212T patent/ES2079651T3/en not_active Expired - Lifetime
- 1991-03-15 WO PCT/US1991/001772 patent/WO1991016175A1/en active IP Right Grant
- 1991-03-15 CA CA002058960A patent/CA2058960C/en not_active Expired - Fee Related
- 1991-03-15 EP EP91907212A patent/EP0479973B1/en not_active Expired - Lifetime
- 1991-03-15 AU AU75489/91A patent/AU647470B2/en not_active Expired
- 1991-03-15 DK DK91907212.4T patent/DK0479973T3/en active
- 1991-04-10 ZA ZA912669A patent/ZA912669B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU647470B2 (en) | 1994-03-24 |
| BR9105723A (en) | 1992-08-04 |
| CA2058960A1 (en) | 1991-10-19 |
| JPH05500778A (en) | 1993-02-18 |
| EP0479973A1 (en) | 1992-04-15 |
| DE69115214D1 (en) | 1996-01-18 |
| DE69115214T2 (en) | 1996-06-20 |
| ZA912669B (en) | 1992-01-29 |
| EP0479973B1 (en) | 1995-12-06 |
| CA2058960C (en) | 1999-11-09 |
| AU7548991A (en) | 1991-11-11 |
| EP0479973A4 (en) | 1992-07-08 |
| WO1991016175A1 (en) | 1991-10-31 |
| ES2079651T3 (en) | 1996-01-16 |
| ATE131096T1 (en) | 1995-12-15 |
| DK0479973T3 (en) | 1996-03-04 |
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