JPH11300621A - Grinding wheel with extra-abrasive grain having dimples dotted on outer peripheral surface and manufacture thereof - Google Patents

Grinding wheel with extra-abrasive grain having dimples dotted on outer peripheral surface and manufacture thereof

Info

Publication number
JPH11300621A
JPH11300621A JP10121622A JP12162298A JPH11300621A JP H11300621 A JPH11300621 A JP H11300621A JP 10121622 A JP10121622 A JP 10121622A JP 12162298 A JP12162298 A JP 12162298A JP H11300621 A JPH11300621 A JP H11300621A
Authority
JP
Japan
Prior art keywords
superabrasive
matrix
grains
dimples
abrasive grains
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.)
Granted
Application number
JP10121622A
Other languages
Japanese (ja)
Other versions
JP3390137B2 (en
Inventor
Hiroaki Asano
浅野浩明
Jun Kodama
隼 児玉
Masato Kitajima
北島正人
Shinji Yanagisawa
柳沢真司
Tomoyasu Imai
今井智康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Van Moppes Ltd
Toyoda Koki KK
Original Assignee
Toyoda Van Moppes Ltd
Toyoda Koki KK
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 Toyoda Van Moppes Ltd, Toyoda Koki KK filed Critical Toyoda Van Moppes Ltd
Priority to JP12162298A priority Critical patent/JP3390137B2/en
Priority to US09/289,954 priority patent/US6200360B1/en
Priority to DE69921533T priority patent/DE69921533T2/en
Priority to EP99400896A priority patent/EP0950470B1/en
Publication of JPH11300621A publication Critical patent/JPH11300621A/en
Application granted granted Critical
Publication of JP3390137B2 publication Critical patent/JP3390137B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a grinding wheel with extra-abrasive grain and a method of manufacturing this grinding wheel with dimples dotted on the outer peripheral surface and with extra-abrasive grains such as diamond abrasive grains or CBN abrasive grains fixed by electroforming. SOLUTION: A method of manufacturing a grinding wheel with extra-abrasive grain comprises a process of attaching a gel adhesive in a dotted state to a conductive ring-like matrix peripheral wall to form protursions, a process of arranging extra-abrasive grains 6 on the matrix peripheral wall by a filling method, a process of temporarily fixing the extra-abrasive grains to the matrix peripheral wall by electroplating, a process of removing excess extra-abrasive grains not temporarily fixed, a process of covering the extra-abrasive grains with a plated layer 8 until all the extra-abrasive grains are covered with plating so as to fix the extra-abrasive grains, a process of filling a fused alloy 10 between the plated layer 8 and core metal 9 inserted in the center of the matrix, and a process of removing the matrix.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ダイヤモンド砥粒
或いはCBN(立方晶窒化ホウ素)砥粒などの超砥粒を
その表面にメッキにより固着し、芯金を一体成形した電
鋳式の超砥粒砥石及びその製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electroformed superabrasive in which a superabrasive such as a diamond abrasive or a CBN (cubic boron nitride) abrasive is fixed on a surface thereof by plating and a core metal is integrally formed. The present invention relates to a grain whetstone and a method for producing the same.

【0002】[0002]

【従来の技術】電鋳式の超砥粒砥石は、ダイヤモンド砥
粒或いはCBN砥粒を電気メッキ法により金属で固着し
たものであり、製造工程での温度が低いため、精密に仕
上げた母型の形状をそのまま表面に反転することができ
るので、精細な形状のものを高精度に製作することがで
きる。その結果、電鋳式の超砥粒砥石を用いて工作物を
研削すれば、硬度が高く、微細な形状の工作物を高精度
に研削加工することができるので、その需要は高まりつ
つある。
2. Description of the Related Art An electroformed superabrasive grindstone is one in which diamond abrasive grains or CBN abrasive grains are fixed to a metal by an electroplating method. Can be inverted on the surface as it is, so that a fine shape can be manufactured with high precision. As a result, if a workpiece is ground using an electroformed superabrasive grindstone, a workpiece having a high hardness and a fine shape can be ground with high precision, and the demand thereof is increasing.

【0003】[0003]

【発明が解決しようとする課題】電鋳式の超砥粒砥石
は、通常、図11、図12に示されるように、ダイヤモ
ンド砥粒或いはCBN砥粒等の超砥粒(以下単に超砥粒
という)(6)を母型(1)内周面に充填し、ニッケル
電気メッキにより超砥粒を母型(1)内周面に仮固定
し、さらに電気メッキによる電鋳によりメッキ層(8)
を形成して超砥粒を本格的に固着し(図11)、母型
(1)の中心に砥石の本体を形成する芯金(9)を挿入
し、メッキ層(8)と芯金(9)との間に溶融合金(1
0)を注入し、固定する(図12)ことにより製造され
る。そのため、超砥粒は砥石外周面に密に固着され、集
中度が非常に高くなり、このように砥粒間隔が小さい
と、工作物への切り込みがかかりにくく、工作物加工中
の研削抵抗が高くなるとともに、工作物表面に研削焼け
が発生するという問題があった。
As shown in FIGS. 11 and 12, an electroformed superabrasive grindstone is usually made of a superabrasive such as a diamond abrasive or a CBN abrasive (hereinafter simply referred to as a superabrasive). (6) is filled in the inner peripheral surface of the matrix (1), superabrasive grains are temporarily fixed to the inner peripheral surface of the matrix (1) by nickel electroplating, and the plating layer (8) is electroformed by electroplating. )
And the super-abrasive grains are fixed in earnest (FIG. 11), and a metal core (9) forming the main body of the grindstone is inserted into the center of the matrix (1), and the plating layer (8) and the metal core ( 9) and molten alloy (1
0) is injected and fixed (FIG. 12). Therefore, the superabrasive grains are tightly fixed to the outer peripheral surface of the grindstone, and the degree of concentration becomes extremely high. If the gap between the abrasive grains is small, it is difficult to cut into the workpiece, and the grinding resistance during the workpiece processing is reduced. As a result, there is a problem that grinding burn occurs on the surface of the workpiece.

【0004】そこで本発明の目的は、メッキ層によりそ
の外周表面に超砥粒を固定する方法により製造される超
砥粒砥石において、外周表面にディンプルを点在させ、
超砥粒の集中度を調整し、工作物への切り込みがかかり
易く、研削抵抗が低く、高精度加工を長期間維持できる
超砥粒砥石及びその製造方法を提供することにある。
Accordingly, an object of the present invention is to provide a superabrasive grindstone manufactured by a method of fixing superabrasive grains on the outer peripheral surface by a plating layer, in which dimples are scattered on the outer peripheral surface,
It is an object of the present invention to provide a superabrasive grinding wheel capable of adjusting the degree of concentration of superabrasive grains, easily cutting into a workpiece, having a low grinding resistance, and maintaining high-precision machining for a long time, and a method for manufacturing the same.

【0005】[0005]

【課題を解決するための手段】前記課題を解決するため
に、本発明は、ダイヤモンド砥粒或いはCBN砥粒等の
超砥粒をメッキ層によりその外周表面に固着した超砥粒
砥石において、その外周表面にディンプルを点在させる
構成としている。また、具体的には、導電性のリング状
の母型内周壁にジェル状接着剤を点着して突起を形成
し、前記母型内周壁に超砥粒を電気メッキにより仮固着
し、さらにメッキ層により超砥粒を固着し、母型を取り
除くことにより形成された、外周表面にディンプルを点
在させた超砥粒砥石を構成する。さらに、前記外周表面
に形成されているディンプル部には超砥粒が存在してい
ない超砥粒砥石を構成する。
In order to solve the above-mentioned problems, the present invention relates to a superabrasive grindstone in which superabrasive grains such as diamond abrasive grains or CBN abrasive grains are fixed to the outer peripheral surface by a plating layer. Dimples are scattered on the outer peripheral surface. Further, specifically, a gel-like adhesive is spotted on the inner peripheral wall of the conductive ring-shaped matrix to form a projection, and superabrasive grains are temporarily fixed to the inner peripheral wall of the matrix by electroplating, and further, A superabrasive grain in which dimples are scattered on the outer peripheral surface is formed by fixing superabrasive grains by a plating layer and removing a matrix. Further, a superabrasive grindstone in which no superabrasive grains exist in the dimple portion formed on the outer peripheral surface is formed.

【0006】本発明は、導電性のリング状母型内周壁に
ジェル状接着剤を点着して突起を形成する工程と、その
母型内周壁に充填法により超砥粒を配置する工程と、電
気メッキにより母型内周壁に超砥粒を仮固着する工程
と、仮固着されていない余剰超砥粒を除去する工程と、
メッキにより超砥粒が全て覆われるまでメッキ層で覆い
超砥粒を固着する工程と、母型の中心に挿入した芯金と
の間に溶融合金又は合成樹脂を注入する工程と、母型を
取り除く工程とよりなる、外周表面にディンプルを点在
させた超砥粒砥石の製造方法を構成する。
The present invention comprises a step of forming a projection by applying a gel adhesive to the inner peripheral wall of a conductive ring-shaped matrix, and a step of arranging superabrasives on the inner peripheral wall of the matrix by a filling method. A step of temporarily fixing superabrasive grains to the inner peripheral wall of the matrix by electroplating, and a step of removing excess superabrasive grains that are not temporarily fixed,
A step of covering the superabrasive grains with a plating layer until all the superabrasive grains are covered by plating, a step of injecting a molten alloy or a synthetic resin between a core metal inserted into the center of the matrix, and A method for manufacturing a superabrasive grindstone in which dimples are scattered on the outer peripheral surface, comprising a step of removing the abrasive grains.

【0007】また、前記ジェル状接着剤を非導電性ジェ
ル状接着剤とすることができ、ジェル状接着剤の粘度は
500,000cp(センチポアーズ)以下であること
が好ましい。
Further, the gel adhesive may be a non-conductive gel adhesive, and the viscosity of the gel adhesive is preferably 500,000 cp (centipoise) or less.

【0008】[0008]

【発明の実施の形態】本発明の超砥粒砥石は、ダイヤモ
ンド砥粒或いはCBN砥粒等の超砥粒をメッキ層により
その外周表面に固着した超砥粒砥石において、その外周
表面にディンプルを点在させる構成とし、具体的には、
導電性のリング状の母型内周壁にジェル状接着剤を点着
して突起を形成し、前記母型内周壁に超砥粒を電気メッ
キにより仮固着し、さらにメッキ層により超砥粒を固着
し、母型を取り除くことにより形成された、外周表面に
ディンプルを点在させた超砥粒砥石であり、研削加工の
際、研削に役立つ超砥粒の集中度を容易に調整でき、超
砥粒の食い付きが良く、研削屑がディンプルに収容さ
れ、ディンプルにクーラントが供給されるので切れ味を
長期間維持でき、高精度に研削加工を行うことができる
ものである。また、前記表面に形成されているディンプ
ル部には超砥粒が存在していない超砥粒砥石を構成する
ことにより、その部分の超砥粒を節約することができ
る。ディンプルの大きさ、密度、配置は容易に、任意に
調節が可能である。
BEST MODE FOR CARRYING OUT THE INVENTION The superabrasive grindstone of the present invention is a superabrasive grindstone in which superabrasive grains such as diamond abrasive grains or CBN abrasive grains are fixed to the outer peripheral surface by a plating layer. The configuration is to be scattered, and specifically,
A gel-like adhesive is spotted on the inner peripheral wall of the conductive ring-shaped matrix to form a projection, the superabrasive grains are temporarily fixed to the inner peripheral wall of the matrix by electroplating, and the superabrasive grains are further plated by a plating layer. It is a super-abrasive grindstone with dimples scattered around its outer surface, which is formed by fixing and removing the matrix.It can easily adjust the degree of concentration of super-abrasive grains useful for grinding during grinding. Since the abrasive grains have good bite, grinding chips are stored in the dimples, and coolant is supplied to the dimples, the sharpness can be maintained for a long time, and the grinding can be performed with high precision. Further, by forming a superabrasive grain whetstone in which no superabrasive grains exist in the dimple portion formed on the surface, the superabrasive grains in that portion can be saved. The size, density and arrangement of the dimples can be easily and arbitrarily adjusted.

【0009】また、本発明の外周表面にディンプルを点
在させた超砥粒砥石の製造方法は、導電性のリング状母
型内周壁にジェル状接着剤を点着して突起を形成する工
程と、その母型内周壁に充填法により超砥粒を配置する
工程と、電気メッキにより母型内周壁に超砥粒を仮固着
する工程と、仮固着されていない余剰超砥粒を除去する
工程と、メッキにより超砥粒が全て覆われるまでメッキ
層で覆い超砥粒を固着する工程と、母型の中心に挿入し
た芯金との間に溶融合金又は合成樹脂を注入する工程
と、母型を取り除く工程とよりなることを特徴とするも
のであり、前記外周表面にディンプルが点在された超砥
粒砥石を容易、安価に製造することができるものであ
る。
Further, the method for producing a superabrasive grindstone having dimples scattered on the outer peripheral surface of the present invention is a step of forming a projection by spotting a gel adhesive on an inner peripheral wall of a conductive ring-shaped matrix. And a step of arranging superabrasive grains on the inner peripheral wall of the matrix by a filling method, a step of temporarily fixing the superabrasive grains to the inner peripheral wall of the mold by electroplating, and removing excess superabrasive grains that are not temporarily fixed. Step, the step of fixing the superabrasive grains covered with a plating layer until all the superabrasive grains are covered by plating, and the step of injecting a molten alloy or a synthetic resin between the core metal inserted into the center of the matrix, The method is characterized by comprising a step of removing a matrix, and is capable of easily and inexpensively manufacturing a superabrasive grindstone having dimples scattered on the outer peripheral surface.

【0010】さらに、前記ジェル状接着剤を非導電性ジ
ェル状接着剤とすることにより、その部分に超砥粒が仮
固着されず、外周表面に超砥粒が存在する部分と超砥粒
の存在しないディンプルとが形成された超砥粒砥石を容
易、安価に製造することができるものである。
Further, by using the non-conductive gel adhesive as the gel-like adhesive, the super-abrasive grains are not temporarily fixed to the non-conductive gel adhesive, and the portion where the super-abrasive grains exist on the outer peripheral surface and the super-abrasive grains are formed. It is possible to easily and inexpensively manufacture a superabrasive grindstone having dimples that do not exist.

【0011】そして、前記ジェル状接着剤の粘度は50
0,000cp以下であることが良い形状(例えば半球
状)を形成する上において、またその作業の容易性にと
って好ましい。
The viscosity of the gel adhesive is 50.
It is preferable for forming a good shape (for example, a hemispherical shape) having a size of 000 cp or less and also for the easiness of the operation.

【0012】[0012]

【実施例】以下、本発明の実施例を図面に沿って説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

【0013】まず、図1乃至図6は、本発明の超砥粒砥
石の製造工程を説明する図面であり、全体の断面形状は
砥石の外形に応じた適宜の曲線をなす周知の総型の円筒
状のものであり(図11、図12参照)、その表面部の
みを表している。
First, FIGS. 1 to 6 are drawings for explaining a manufacturing process of a superabrasive grindstone of the present invention. The overall cross-sectional shape of the well-known general mold has an appropriate curve according to the outer shape of the grindstone. It has a cylindrical shape (see FIGS. 11 and 12), and shows only a surface portion thereof.

【0014】本実施例においては、ジェル状接着剤とし
て非導電性ジェル状接着剤を使用し、表面にダイヤモン
ド砥粒或いはCBN砥粒等の超砥粒が存在する部分と超
砥粒の存在しないディンプルとが形成される超砥粒砥石
を製造する場合について説明する。まず、図1において
は、グラファイト等の導電性のリング状の母型(1)の
内周壁表面に非導電性ジェル状の接着剤(例えば、シア
ノアクリレート瞬間接着剤ジェルタイプ)(2)を定量
吐出装置(5)の円形のノズル(4)により一定量を点
着する。点着された接着剤はジェル状であるので図1に
示すように略半球状となり瞬間的に固形化し突起(3)
となる。その形状は出来上がりの超砥粒砥石表面のディ
ンプルの形状となる。その大きさは点着する接着剤の量
により、密度は点着の数によることになるが、ノズル
(4)の大きさ、定量吐出装置(5)の吐出量を選択す
ることにより簡単に調整することができる。本実施例に
おいては非導電性ジェル状接着剤としてスリーボンド社
製の「スリーボンド1739瞬間強力接着剤・ジェルタ
イプ(粘度 23,000cp)」を使用した。非導電
性ジェル状接着剤は、本件発明の趣旨にそうものであれ
ば他のものでも良いことは当然であるが、良い形状(例
えば半球状)を形成する上において、またその作業を容
易にするために、その粘度は500,000cp(セン
チポアズ)以下であることが好ましい。
In this embodiment, a non-conductive gel adhesive is used as the gel adhesive, and a portion where super abrasive grains such as diamond abrasive grains or CBN abrasive grains are present on the surface and no super abrasive grains are present. A case where a superabrasive grindstone in which dimples are formed will be described. First, in FIG. 1, a non-conductive gel-like adhesive (eg, cyanoacrylate instant adhesive gel type) (2) is quantified on the inner peripheral wall surface of a conductive ring-shaped matrix (1) such as graphite. A certain amount is spotted by the circular nozzle (4) of the discharge device (5). Since the spotted adhesive has a gel shape, it becomes substantially hemispherical as shown in FIG.
Becomes The shape becomes the shape of the dimple on the surface of the finished superabrasive grindstone. The size depends on the amount of the adhesive to be spotted, and the density depends on the number of spots. However, it can be easily adjusted by selecting the size of the nozzle (4) and the discharge amount of the quantitative discharge device (5). can do. In the present embodiment, "ThreeBond 1739 Instant Strong Adhesive Gel Type (Viscosity: 23,000 cp)" manufactured by ThreeBond Co., Ltd. was used as the non-conductive gel adhesive. The non-conductive gel adhesive may be of any other type as long as the purpose of the present invention is so, but it is easy to form a good shape (for example, a hemispherical shape) and to easily perform the work. Therefore, it is preferable that the viscosity is 500,000 cp (centipoise) or less.

【0015】さらに、ディンプルの形状は半球状に限ら
れず、その形状は図9に示されるように、三角形、四角
形、菱形等を任意に選択することができる。この場合に
も、接着剤がジェル状であるため、その形状は先端が細
くなる三角錐(図9b)、四角錐(図9c)等の形状の
突起となり、その跡形がディンプルの形状となる。ま
た、それらの断面形状のノズルを用いることもできる。
Furthermore, the shape of the dimple is not limited to a hemisphere, and the shape can be arbitrarily selected from a triangle, a square, a diamond, and the like as shown in FIG. Also in this case, since the adhesive is in the form of a gel, the shape of the adhesive becomes a triangular pyramid (FIG. 9b) or a quadrangular pyramid (FIG. 9c) or the like having a thin tip, and the trace becomes a dimple shape. Further, nozzles having those cross-sectional shapes can also be used.

【0016】ジェル状の接着剤(2)をノズル(4)に
より点着するための定量突出装置(5)は、一般に市販
されているもの(通称ディスペンサと呼ばれている)を
使用することができ、一般的には手作業により点着する
が、ノズル部分を数値制御装置を利用して予めプログラ
ムされた位置に自動的に点着することもできる。点着さ
れた非導電性のジェル状接着剤は瞬間的に固形化し、母
型の壁面に略半球状の突起(3)が多数形成される。そ
の状態で、母型(1)の周壁面にダイヤモンド砥粒或い
はCBN砥粒等の超砥粒(6)を充填すると、超砥粒
(6)は、点着突起(3)のないところは超砥粒(6)
が直接母型壁面に接するように、また略半球状の点着突
起(3)部分にもその表面に超砥粒(6´)が接するこ
とになる(図2)。
As the metering projection device (5) for spotting the gel-like adhesive (2) with the nozzle (4), a commercially available one (commonly called a dispenser) can be used. Although it is possible to do this by hand and generally by hand, it is also possible to use a numerical controller to automatically spot the nozzle at a pre-programmed position. The spotted non-conductive gel adhesive is instantaneously solidified, and a large number of substantially hemispherical projections (3) are formed on the wall surface of the matrix. In this state, when the peripheral wall surface of the matrix (1) is filled with superabrasive grains (6) such as diamond abrasive grains or CBN abrasive grains, the superabrasive grains (6) have no spotting projections (3). Super abrasive (6)
The superabrasive grains (6 ') are in contact with the surface of the spotting projection (3), which is directly in contact with the wall surface of the master mold, and also on the substantially hemispherical spotting projection (3) (FIG. 2).

【0017】図2の状態で、それを電気メッキ槽に入れ
電気メッキ(ニッケルメッキ)することにより超砥粒
(6)と母型内周壁面(1)の間にメッキ層(7)が形
成され、超砥粒(6)の母型内周壁面(1)への仮電着
を行う(図3)。超砥粒(6)の仮固着が終わった状態
で、余剰の超砥粒(6´)を取り除くが、この場合点着
された突起(3)は非導電性の接着剤で形成されている
ため、その部分にのみ接していた超砥粒(6´)は電着
されていないので容易に取り除かれ、超砥粒砥石のディ
ンプルに相当する部分には超砥粒がほとんど存在しない
ことになる(図4)。
In the state shown in FIG. 2, it is placed in an electroplating tank and electroplated (nickel plated) to form a plating layer (7) between the superabrasive grains (6) and the inner peripheral wall surface (1) of the matrix. Then, provisional electrodeposition of the superabrasive grains (6) on the inner peripheral wall surface (1) of the matrix is performed (FIG. 3). When the super-abrasive grains (6) have been temporarily fixed, excess super-abrasive grains (6 ') are removed. In this case, the spotted projections (3) are formed of a non-conductive adhesive. Therefore, the superabrasive grains (6 ') that were in contact only with that portion are easily removed because they are not electrodeposited, and the superabrasive grains hardly exist in the portion corresponding to the dimple of the superabrasive grindstone. (FIG. 4).

【0018】再びメッキ槽にいれて本格的に超砥粒
(6)を固着するためにニッケル電気メッキにより電鋳
層(8)を形成する。これは、超砥粒(6)の直径を越
え、また点着突起(3)を越えて、十分な厚さの電鋳層
(8)を形成することにより超砥粒(6)を確実に固着
するものである(図5)。
An electroformed layer (8) is formed by nickel electroplating in order to fix the superabrasive grains (6) in the plating tank again. This is because the electroformed layer (8) having a sufficient thickness is formed beyond the diameter of the superabrasive grains (6) and beyond the spotting projections (3), thereby ensuring the superabrasive grains (6). It is fixed (FIG. 5).

【0019】この場合、電気メッキによる電鋳の代わり
に、無電解メッキ法(化学メッキ)により超砥粒を固着
するメッキ層を形成することができる。すなわち、図4
の状態のものを、無電解ニッケル・リンメッキ槽に約1
80時間浸漬することにより約3mmのニッケルメッキ
層を形成することができ、その厚さは超砥粒を固着する
のに十分な厚さである。
In this case, a plating layer for fixing superabrasive grains can be formed by electroless plating (chemical plating) instead of electroforming by electroplating. That is, FIG.
About 1 in the electroless nickel-phosphorus plating tank
By immersing for 80 hours, a nickel plating layer of about 3 mm can be formed, the thickness of which is sufficient to fix the superabrasive grains.

【0020】次に、母型(1)の中心に超砥粒砥石の本
体をなす芯金(9)を挿入し、芯金(9)と前記電鋳層
(8)との間にすず合金等の溶融合金(10)を流し入
れて、芯金(9)と一体の超砥粒砥石を形成する。この
場合に溶融合金は、冷却することにより電着層(8)と
芯金(9)とを接着固定する役目を果たすが、合金に限
らず、合成樹脂を用いて接着固定することもできる。そ
の場合には金属との接着性に優れ、機械的強度の高いエ
ポキシ系樹脂、フェノール系樹脂(又はそれらを接着剤
としたもの)等が用いられる。最後にグラファイト製の
リング状母型(1)を切削、研削により除去し、超砥粒
砥石(A)は完成する。母型(1)を取り除くことによ
り、母型内周壁面に接着固定された点着突起(3)も同
時に取り除かれるので、その跡が、砥石表面のディンプ
ル(12)として自動的に形成されることになる(図
6)。ディンプルの幅W、ピッチP、深さHは点着突起
の形成を調整することにより容易に調整することができ
る。
Next, a metal core (9) forming the main body of the superabrasive grain is inserted into the center of the matrix (1), and a tin alloy is inserted between the metal core (9) and the electroformed layer (8). Pour a molten alloy (10) such as the above to form a superabrasive grindstone integrated with the metal core (9). In this case, the molten alloy serves to bond and fix the electrodeposition layer (8) and the core metal (9) by cooling. However, the molten alloy is not limited to the alloy and can be fixed and fixed using a synthetic resin. In that case, an epoxy resin or a phenolic resin (or one using them as an adhesive) having excellent mechanical adhesion and high mechanical strength is used. Finally, the graphite ring mold (1) is removed by cutting and grinding to complete the superabrasive grinding wheel (A). By removing the matrix (1), the spotting projections (3) adhered and fixed to the inner peripheral wall of the matrix are also removed at the same time, and the trace is automatically formed as a dimple (12) on the grindstone surface. (FIG. 6). The width W, pitch P, and depth H of the dimple can be easily adjusted by adjusting the formation of the spotting projection.

【0021】この様にして製作された超砥粒砥石の表面
は図7のようになっており、ダイヤモンド砥粒或いはC
BN砥粒等の超砥粒(6)が配列固着された面と、ディ
ンプル(12)が適宜に配列されている。図8は、図7
におけるI−I断面図であり、ディンプル(12)の部
分には超砥粒がほとんど固着されていないことが分か
る。超砥粒が固着されていないディンプル(12)が形
成されているので、超砥粒の節約ができる。
The surface of the superabrasive grindstone manufactured in this manner is as shown in FIG.
The surface on which the superabrasive grains (6) such as BN abrasive grains are arranged and fixed, and the dimples (12) are appropriately arranged. FIG.
1 is a sectional view taken along the line II in FIG. 1, and it can be seen that superabrasive grains are hardly fixed to the dimple (12). Since the dimple (12) to which the superabrasive grains are not fixed is formed, the superabrasive grains can be saved.

【0022】ディンプルの大きさ(W)は超砥粒平均径
の3〜20倍、深さ(H)は0.1〜5倍程度が採用さ
れ、研削作業の際の研削屑の収容、排出を容易にし、切
れ味が向上し、また、クーラントがディンプル中に収容
されて研削中の砥粒の摩擦熱の冷却に資するので、超砥
粒の磨耗の主要因とされる摩擦熱による熱損傷劣化磨耗
が防止され、超砥粒砥石の長寿命化に役立つ。
The size (W) of the dimple is about 3 to 20 times the average diameter of the superabrasive grains, and the depth (H) is about 0.1 to 5 times. Thermal damage deterioration due to frictional heat, which is a major cause of superabrasive grain wear, because coolant is contained in dimples and contributes to cooling of frictional heat of abrasive grains during grinding. Abrasion is prevented, helping to extend the life of the superabrasive grindstone.

【0023】外周表面にディンプルを有する超砥粒砥石
の効果を確認するために次の実験を試みた。先ず本発明
の第1実施例にしたがって外周表面にディンプルを有す
る超砥粒砥石(外径φ175mm×幅5mm、内径φ3
1.75mm)を製作した。
The following experiment was conducted in order to confirm the effect of the superabrasive grindstone having dimples on the outer peripheral surface. First, according to the first embodiment of the present invention, a superabrasive grindstone having dimples on the outer peripheral surface (outer diameter φ175 mm × width 5 mm, inner diameter φ3
1.75 mm).

【0024】すなわち、リング状の導電性のグラファイ
ト母型の内周面に非導電性瞬間接着剤「スリーボンド1
739(粘度23,000cp)」をオートマチック・
プレシジョン・ディスペンサ(定量吐出装置)に先端内
径0.42mmの円形ノズルを装着して、硬化後の接着
剤の半球状スポット径が1.5mmとなるようにディス
ペンサの圧力と吐出時間をセットし、点着密度16個/
cm2 (ディンプル面積率28%)で点着した。室温内
で接着剤完全硬化後、母型を砥粒充填用の治具にセット
し、接着剤突起の点在する母型内周壁面に粒度120〜
140メッシュのCBN砥粒を充填し、仮電着メッキ槽
にセットし0.1〜0.15A/dm2 の電流密度でC
BN砥粒1層分を仮電着固定した。
That is, a non-conductive instant adhesive "Three Bond 1" is applied to the inner peripheral surface of the ring-shaped conductive graphite matrix.
739 (viscosity 23,000 cp) "
A circular nozzle having a tip inner diameter of 0.42 mm is attached to a precision dispenser (quantitative discharge device), and the pressure and discharge time of the dispenser are set so that the hemispherical spot diameter of the cured adhesive becomes 1.5 mm. Spotting density 16 /
Spotted at cm 2 (dimple area ratio 28%). After the adhesive is completely cured at room temperature, the matrix is set on a jig for filling the abrasive grains, and a particle size of 120 to
Filled with 140 mesh CBN abrasive grains, set in a temporary electrodeposition plating tank, and set C at a current density of 0.1 to 0.15 A / dm 2.
One layer of BN abrasive grains was temporarily electrodeposited and fixed.

【0025】仮電着後、余分なCBN砥粒を除去し、本
電着メッキ槽にセットし、2A/dm2 で85時間ニッ
ケル電気メッキにより電着層を形成しCBN砥粒を完全
固着した(図11参照)。その後母型の中心に鉄(S4
5C)の芯金を母型と同芯にセットし、前記ニッケルメ
ッキ層と鉄芯金との間隙にすずを含む低溶融合金を20
0℃で流し込み冷却固定した(図12参照)。最後に、
母型部分を切削除去し、WA#220砥石で研削仕上げ
して、本発明の外周表面にディンプルを点在させたCB
N砥石を得た。比較例として、ディンプルのない同様の
CBN砥石を、前記の接着剤の点着工程のみなしに同様
に製作した。
After the temporary electrodeposition, excess CBN abrasive grains were removed, set in this electrodeposition plating tank, an electrodeposition layer was formed by nickel electroplating at 2 A / dm 2 for 85 hours, and the CBN abrasive grains were completely fixed. (See FIG. 11). After that, iron (S4
5C) was set concentrically with the matrix, and a low-melting alloy containing tin in the gap between the nickel plating layer and the iron core was used for 20 minutes.
It was poured at 0 ° C. and fixed by cooling (see FIG. 12). Finally,
Machining part is removed by cutting, and is finished by grinding with a WA # 220 grindstone.
N grindstone was obtained. As a comparative example, a similar CBN grindstone without dimples was similarly fabricated without only the adhesive spotting step described above.

【0026】そして、それらのCBN砥石を用いて研削
テストを行った。すなわち、研削テストは、前記CBN
砥石を用いて所定の研削条件の下で研削を行い、その際
の法線研削抵抗を測定した。その研削条件は、下記の通
りである。 研削盤 ;平面研削盤 クーラント ;水溶性ソリューブル70倍希釈液 砥石周速 ;33m/s 工作物 ;SUJ(HE)(50mm×3m
m、厚さ30mm) 工作物送り速度 ;90mm/min(アップカット) 砥石切込量 ;0.5mm/PASS 取り代 ;2mm その結果、本発明の外周表面にディンプルを点在させた
CBN砥石の法線研削抵抗は0.35kgf/mmであ
ったのに対して、外周表面にディンプルを有しない比較
例では0.51kgf/mmであった。したがって、本
発明の実施例では、従来例と比較して、研削加工時の法
線研削抵抗が69%まで低減することができたことにな
る。
Then, a grinding test was performed using these CBN grinding wheels. That is, the grinding test is performed using the CBN.
Using a grindstone, grinding was performed under predetermined grinding conditions, and the normal grinding resistance at that time was measured. The grinding conditions are as follows. Grinding machine; Surface grinder Coolant; Water-soluble Soluble 70 times diluent Grinding wheel peripheral speed; 33 m / s Workpiece; SUJ (HE) (50 mm x 3 m
m, thickness 30 mm) Workpiece feed speed; 90 mm / min (up cut) Grinding wheel cut amount: 0.5 mm / PASS removal allowance: 2 mm As a result, the CBN grindstone of the present invention having dimples scattered on the outer peripheral surface. The normal grinding resistance was 0.35 kgf / mm, while that of the comparative example having no dimples on the outer peripheral surface was 0.51 kgf / mm. Therefore, in the embodiment of the present invention, the normal grinding resistance during the grinding process can be reduced to 69% as compared with the conventional example.

【0027】ディンプル(12)の形状、配置は、略半
球状(図9a)のほか、図9bに示されるような三角錐
形、図9cに示される四角錐形、図9dの菱形等を任意
に選択することができ、その大きさ、配置も任意に選択
することができる。
The shape and arrangement of the dimple (12) may be any shape such as a triangular pyramid as shown in FIG. 9b, a quadrangular pyramid as shown in FIG. 9c, and a rhombus as shown in FIG. And its size and arrangement can be arbitrarily selected.

【0028】図9aは接着剤点着を複数個集中させるこ
とにより、ディンプル部面積率を大きくとることがで
き、研削屑とクーラントの収容、排出能力と冷却効果を
大きくできる例である。図9b、図9cは、ディンプル
形状を三角錐形、四角錐形とし、超砥粒の分布している
各領域の形状も三角形、四角形とするとともに、超砥粒
砥石の回転方向にその角部先端方向を合わせることによ
り工作物への超砥粒砥石の食い込みが容易となり、さら
に砥粒領域の下流側には確実にディンプルが配置される
ため研削屑の排出が適格に行われる。このため研削作業
における研削抵抗の低減が達成される。図9dは、超砥
粒の分布領域が網目状に砥石外周表面を覆うため、ディ
ンプル部面積率が比較的高い場合でも、図9b、図9c
に比較して研削加工において工作物の面あらさの向上が
期待できるものである。
FIG. 9A shows an example in which the area ratio of the dimples can be increased by concentrating a plurality of adhesive spots, and the capacity for accommodating, discharging, and cooling grinding chips and coolant can be increased. 9b and 9c show that the dimple shape is a triangular pyramid or a quadrangular pyramid, and the shape of each region where the superabrasive grains are distributed is also a triangular or quadrangular shape. By aligning the tip direction, the superabrasive grindstone can easily bite into the workpiece, and the dimples are surely arranged downstream of the abrasive grain region, so that the grinding chips can be discharged properly. Therefore, a reduction in grinding resistance in the grinding operation is achieved. FIG. 9D shows the distribution region of the superabrasive grains in a mesh-like manner so as to cover the outer peripheral surface of the grindstone. Therefore, even if the dimple area ratio is relatively high, FIGS.
It is expected that the surface roughness of the workpiece will be improved in the grinding process as compared with the above.

【0029】第2実施例として、非導電性ジェル状接着
剤に代えて導電性ジェル状接着剤、例えば、スリーボン
ド社製の「スリーボンド3300シリーズ導電性樹脂材
料接着剤」、或いは前記非導電性接着剤に銀粉等を混入
したものを用いた場合、前記図3において超砥粒を仮電
着した場合、導電性ジェル状接着剤により形成された突
起(3)の部分にも超砥粒(6´)が仮固着されること
になり、結果的に製造される超砥粒砥石の外周表面は図
10に示されているようにディンプル(12)部分をも
含めて1列の超砥粒(6、6´)が配置された構造とな
る。これらの製造方法によれば、超砥粒砥石の表面に容
易にディンプルを形成することができ、表面にディンプ
ルを点在させた超砥粒砥石を用いることにより、研削屑
の収容、排出を容易にし、クーラントによる冷却効果が
増し、切れ味が向上するものである。また、ディンプル
表面にも超砥粒が存在するため、ディンプル形状が長期
間変化せず、超砥粒砥石の性能を長期間維持できるもの
である。
As a second embodiment, a conductive gel adhesive is used in place of the non-conductive gel adhesive, for example, "ThreeBond 3300 series conductive resin material adhesive" manufactured by ThreeBond, or the nonconductive glue. In the case where silver powder or the like is mixed in the agent, when the superabrasive particles are temporarily electrodeposited in FIG. 3, the superabrasive particles (6) are also formed on the projections (3) formed by the conductive gel adhesive. ′) Are temporarily fixed, and the outer peripheral surface of the resulting superabrasive grindstone has a single row of superabrasive grains (including the dimple (12) portion) as shown in FIG. 6, 6 ′) are arranged. According to these manufacturing methods, dimples can be easily formed on the surface of the superabrasive grindstone, and the use of a superabrasive grindstone having dimples scattered on the surface facilitates the storage and discharge of grinding debris. In addition, the cooling effect of the coolant is increased, and the sharpness is improved. In addition, since the superabrasive grains are also present on the dimple surface, the dimple shape does not change for a long time, and the performance of the superabrasive grain can be maintained for a long time.

【0030】[0030]

【発明の効果】本発明の超砥粒砥石は、ダイヤモンド砥
粒或いはCBN砥粒等の超砥粒をメッキ層によりその外
周表面に固着したものであり、その外周表面にディンプ
ルを点在させる構成としているので、研削に役立つ超砥
粒の集中度を容易に調整でき、研削作業の際研削屑がデ
ィンプルに収容され排出されるので超砥粒の食い付きが
良く、研削抵抗を減少することができる。また、クーラ
ントがディンプルに収容されて超砥粒を冷却するので超
砥粒の磨耗を抑えて切れ味を長期間維持でき、さらに、
ディンプルが点在していることにより研削抵抗が均一に
なり研削作業の最中に振動が生じず、高精度の研削作業
が長期間維持できるものである。さらに、本発明の超砥
粒砥石は導電性のリング状母型内周周壁にジェル状接着
剤を点着して突起を形成し、前記母型内周周壁に超砥粒
を仮固着し、さらにメッキにより超砥粒を固着し、母型
を取り除いて形成される、外周表面にディンプルが形成
されたものであり、ディンプルの面積率、形状、大きさ
等を任意に形成することができる。さらに、前記ジェル
状接着剤を非導電材料とした場合には、結果的に、超砥
粒砥石の外周表面には必要な箇所のみに超砥粒が存在
し、ディンプルの部分には超砥粒が存在しないので超砥
粒の節約になり、ニッケル製のディンプルが形成されて
いるので、研削作業の際の研削屑の収容、排出を容易に
し、切れ味が向上するものである。
The superabrasive grindstone of the present invention comprises superabrasive grains such as diamond abrasive grains or CBN abrasive grains fixed to the outer peripheral surface thereof by a plating layer, and has dimples scattered on the outer peripheral surface thereof. It is easy to adjust the degree of concentration of superabrasive grains that are useful for grinding, grinding dust is stored in dimples and discharged during grinding work, so superabrasive grains bite well and reduce grinding resistance it can. In addition, the coolant is stored in the dimples and cools the superabrasives, so the wear of the superabrasives is suppressed and the sharpness can be maintained for a long time.
Since the dimples are scattered, the grinding resistance becomes uniform, vibration does not occur during the grinding operation, and a high-precision grinding operation can be maintained for a long time. Furthermore, the superabrasive grindstone of the present invention forms a projection by spotting a gel-like adhesive on the conductive ring-shaped inner peripheral wall of the matrix, and temporarily fixes the superabrasive grains on the inner peripheral wall of the matrix, Further, dimples are formed on the outer peripheral surface, which is formed by fixing superabrasive grains by plating and removing the matrix, and the area ratio, shape, size, and the like of the dimples can be arbitrarily formed. Further, when the gel-like adhesive is made of a non-conductive material, as a result, the super-abrasive grains are present only in necessary portions on the outer peripheral surface of the super-abrasive grindstone, and Since superfine grains are not present, superabrasive grains can be saved, and since nickel-made dimples are formed, it is possible to easily store and discharge grinding chips during the grinding operation and improve sharpness.

【0031】本発明の超砥粒砥石の製造方法によれば、
導電性のリング状の母型内周周壁にジェル状接着剤を点
着して突起を形成しているので、作業が容易であり、母
型を取り除くことにより自動的に外周表面にディンプル
が形成された超砥粒砥石を容易、安価に製造することが
できるものである。また、母型内周周壁にジェル状接着
剤を点着する際、ノズルの大きさ、吐出量、箇所、形状
等を適宜選択することにより砥石外周面のディンプルの
形状、大きさ、密度等を簡単に調整することができ、併
せて超砥粒の集中度を容易に調整することができるもの
である。
According to the method for producing a superabrasive grindstone of the present invention,
A gel-like adhesive is spotted on the inner peripheral wall of the conductive ring-shaped matrix to form projections, so work is easy, and dimples are automatically formed on the outer peripheral surface by removing the matrix. It is possible to easily and inexpensively produce the super-abrasive grindstone thus obtained. In addition, when the gel adhesive is spotted on the inner peripheral wall of the matrix, the size, discharge amount, location, shape, and the like of the nozzle are appropriately selected to adjust the shape, size, density, etc. of the dimples on the outer peripheral surface of the grindstone. It can be easily adjusted, and at the same time, the degree of concentration of superabrasive grains can be easily adjusted.

【0032】リング状の母型内周周壁に点着するジェル
状接着剤を非導電性ジェル状接着剤とすることにより、
電気メッキにより母型周壁に超砥粒を仮固着する場合に
前記突起の部分には超砥粒が固着されず、不必要な部分
への超砥粒の固着がないので、超砥粒の節約になり、最
後に母型を取り除く際、前記突起は母型と一緒に取り除
かれるので、超砥粒砥石の外周表面には、超砥粒が存在
しないディンプルが自動的に形成される。
By using a non-conductive gel adhesive as the gel adhesive spotted on the inner peripheral wall of the ring-shaped matrix,
When the super-abrasive grains are temporarily fixed to the peripheral wall of the matrix by electroplating, the super-abrasive grains are not fixed to the protrusions, and the super-abrasive grains are not fixed to unnecessary portions. When the matrix is finally removed, the protrusions are removed together with the matrix, so that dimples free of superabrasive grains are automatically formed on the outer peripheral surface of the superabrasive grindstone.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の超砥粒砥石の製作過程の1工程を示す
部分断面図である。
FIG. 1 is a partial cross-sectional view showing one step in a process of manufacturing a superabrasive grindstone of the present invention.

【図2】本発明の超砥粒砥石の製作過程の1工程を示す
部分断面図である。
FIG. 2 is a partial cross-sectional view showing one step of a process of manufacturing a superabrasive grindstone of the present invention.

【図3】本発明の超砥粒砥石の製作過程の1工程を示す
部分断面図である。
FIG. 3 is a partial cross-sectional view showing one step of a process of manufacturing a superabrasive grindstone of the present invention.

【図4】本発明の超砥粒砥石の製作過程の1工程を示す
部分断面図である。
FIG. 4 is a partial cross-sectional view showing one step of a process of manufacturing a superabrasive grindstone of the present invention.

【図5】本発明の超砥粒砥石の製作過程の1工程を示す
部分断面図である。
FIG. 5 is a partial cross-sectional view showing one step of a manufacturing process of the superabrasive grinding wheel of the present invention.

【図6】本発明の超砥粒砥石の製作過程の1工程を示す
部分断面図である。
FIG. 6 is a partial cross-sectional view showing one step of a process of manufacturing a superabrasive grindstone of the present invention.

【図7】本発明の超砥粒砥石の部分表面を示す平面図で
ある。
FIG. 7 is a plan view showing a partial surface of a superabrasive grindstone of the present invention.

【図8】本発明の超砥粒砥石の部分表面を示す図7のI
−I断面図である。
FIG. 8 shows a partial surface of the superabrasive grindstone of the present invention.
FIG. 2 is a sectional view taken along the line I.

【図9】本発明の超砥粒砥石の種々の部分表面を示す平
面図である。
FIG. 9 is a plan view showing various partial surfaces of the superabrasive grindstone of the present invention.

【図10】本発明の他の実施例の超砥粒砥石の表面の部
分断面図である。
FIG. 10 is a partial cross-sectional view of the surface of a superabrasive grinding wheel according to another embodiment of the present invention.

【図11】本発明の電鋳式超砥粒砥石の1製作過程を示
す全体断面図である。
FIG. 11 is an overall sectional view showing one manufacturing process of the electroformed superabrasive grindstone of the present invention.

【図12】本発明の電鋳式超砥粒砥石の1製作過程を示
す全体断面図である。
FIG. 12 is an overall sectional view showing one manufacturing process of the electroformed superabrasive grindstone of the present invention.

【符号の説明】[Explanation of symbols]

1.母型 2.ジェル状接着剤 3.突起 4.ノズル 5.定量吐出装置 6.超砥粒 7.電気メッキ 8.電鋳層 9.芯金 10.溶融合金層 12.ディンプル 1. Matrix 2. 2. Gel-like adhesive Protrusions 4. Nozzle 5. 5. Dispensing device 6 Super abrasive grains 7. Electroplating 8. Electroformed layer 9. Core 10. Molten alloy layer 12. dimple

───────────────────────────────────────────────────── フロントページの続き (72)発明者 北島正人 愛知県岡崎市舞木町字城山1−54 豊田バ ンモップス株式会社内 (72)発明者 柳沢真司 愛知県岡崎市舞木町字城山1−54 豊田バ ンモップス株式会社内 (72)発明者 今井智康 愛知県刈谷市朝日町1丁目1番地 豊田工 機株式会社内 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masato Kitajima 1-54 Shiroyama, Maiki-cho, Okazaki City, Aichi Prefecture Inside Toyota Banmops Co., Ltd. (72) Inventor Shinji Yanagisawa 1-54, Shiroyama, Maiki-cho Okazaki City, Aichi Prefecture Toyota Inside Banmops Co., Ltd. (72) Inventor Tomoyasu Imai 1-1-1, Asahi-cho, Kariya-shi, Aichi Pref.

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】ダイヤモンド砥粒或いはCBN砥粒等の超
砥粒をメッキ層によりその外周表面に固着した超砥粒砥
石において、その外周表面にディンプルを点在させたこ
とを特徴とする超砥粒砥石。
1. A superabrasive grain in which superabrasive grains such as diamond abrasive grains or CBN abrasive grains are fixed to the outer peripheral surface by a plating layer, wherein dimples are scattered on the outer peripheral surface. Grain stone.
【請求項2】導電性のリング状の母型内周壁にジェル状
接着剤を点着して突起を形成し、前記母型内周壁に電気
メッキにより超砥粒を仮固着し、さらにメッキ層により
超砥粒を固着し、母型を取り除くことにより形成され
た、外周表面にディンプルを点在させたことを特徴とす
る超砥粒砥石。
2. A projection is formed by applying a gel-like adhesive to an inner peripheral wall of a conductive ring-shaped matrix, and a superabrasive is temporarily fixed to the inner peripheral wall of the matrix by electroplating. A super-abrasive grain formed by fixing super-abrasive grains and removing a mother die, wherein dimples are scattered on an outer peripheral surface.
【請求項3】前記外周表面に形成されているディンプル
部には超砥粒が存在していないことを特徴とする請求項
1又は請求項2記載の超砥粒砥石。
3. The superabrasive grinding wheel according to claim 1, wherein no superabrasive grains exist in the dimples formed on the outer peripheral surface.
【請求項4】導電性のリング状母型内周壁にジェル状接
着剤を点着して突起を形成する工程と、その母型内周壁
に充填法により超砥粒を配置する工程と、電気メッキに
より母型内周壁に超砥粒を仮固着する工程と、仮固着さ
れていない余剰超砥粒を除去する工程と、メッキにより
超砥粒が全て覆われるまでメッキ層で覆い超砥粒を固着
する工程と、母型の中心に挿入した芯金との間に溶融合
金又は合成樹脂を注入する工程と、母型を取り除く工程
とよりなることを特徴とする外周表面にディンプルを点
在させた超砥粒砥石の製造方法。
4. A step of forming a projection by spotting a gel adhesive on the inner peripheral wall of the conductive ring-shaped matrix, a step of arranging superabrasive grains on the inner peripheral wall of the matrix by a filling method, The step of temporarily fixing superabrasive grains to the inner peripheral wall of the matrix by plating, the step of removing excess superabrasive grains that have not been temporarily fixed, and the step of covering the superabrasive grains with a plating layer until all the superabrasive grains are covered by plating. A step of fixing, a step of injecting a molten alloy or a synthetic resin between a core bar inserted into the center of the matrix, and a step of removing the matrix, wherein dimples are scattered on the outer peripheral surface. Manufacturing method of super abrasive whetstone.
【請求項5】前記ジェル状接着剤は非導電性ジェル状接
着剤であることを特徴とする請求項4記載の外周表面に
ディンプルを点在させた超砥粒砥石の製造方法。
5. The method according to claim 4, wherein said gel-like adhesive is a non-conductive gel-like adhesive.
【請求項6】前記ジェル状接着剤は、その粘度が50
0,000cp以下であることを特徴とする請求項4又
は請求項5記載の外周表面にディンプルを点在させた超
砥粒砥石の製造方法。
6. The gel adhesive has a viscosity of 50.
The method for producing a superabrasive grindstone in which dimples are dotted on the outer peripheral surface according to claim 4 or 5, wherein the diameter is not more than 000 cp.
JP12162298A 1998-04-13 1998-04-16 A method for manufacturing a superabrasive grain in which dimples are scattered on an outer peripheral surface. Expired - Lifetime JP3390137B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP12162298A JP3390137B2 (en) 1998-04-16 1998-04-16 A method for manufacturing a superabrasive grain in which dimples are scattered on an outer peripheral surface.
US09/289,954 US6200360B1 (en) 1998-04-13 1999-04-13 Abrasive tool and the method of producing the same
DE69921533T DE69921533T2 (en) 1998-04-13 1999-04-13 Grinding tool and method for producing the same
EP99400896A EP0950470B1 (en) 1998-04-13 1999-04-13 Abrasive tool and the method of producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12162298A JP3390137B2 (en) 1998-04-16 1998-04-16 A method for manufacturing a superabrasive grain in which dimples are scattered on an outer peripheral surface.

Publications (2)

Publication Number Publication Date
JPH11300621A true JPH11300621A (en) 1999-11-02
JP3390137B2 JP3390137B2 (en) 2003-03-24

Family

ID=14815826

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
JP (1) JP3390137B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009061560A (en) * 2007-09-07 2009-03-26 Mitsubishi Materials Corp Electrodeposition tool
JP2014140922A (en) * 2013-01-23 2014-08-07 Toyoda Van Moppes Ltd Electrodeposition grinding wheel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247383U (en) * 1975-10-01 1977-04-04
JPH0557617A (en) * 1991-08-28 1993-03-09 Komatsu Ltd Electrodeposited tool and manufacture thereof
JPH0752047A (en) * 1993-08-10 1995-02-28 Komatsu Ltd Accurate electrodeposition method for abrasive grain
JPH08174429A (en) * 1994-12-20 1996-07-09 Asahi Daiyamondo Kogyo Kk Rotary dresser
JPH08197432A (en) * 1995-01-26 1996-08-06 Mitsubishi Materials Corp Electrodeposition grinding wheel and its manufacture
JPH09193022A (en) * 1996-01-11 1997-07-29 Mitsubishi Heavy Ind Ltd Electrodeposition grinding wheel and manufacture thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247383U (en) * 1975-10-01 1977-04-04
JPH0557617A (en) * 1991-08-28 1993-03-09 Komatsu Ltd Electrodeposited tool and manufacture thereof
JPH0752047A (en) * 1993-08-10 1995-02-28 Komatsu Ltd Accurate electrodeposition method for abrasive grain
JPH08174429A (en) * 1994-12-20 1996-07-09 Asahi Daiyamondo Kogyo Kk Rotary dresser
JPH08197432A (en) * 1995-01-26 1996-08-06 Mitsubishi Materials Corp Electrodeposition grinding wheel and its manufacture
JPH09193022A (en) * 1996-01-11 1997-07-29 Mitsubishi Heavy Ind Ltd Electrodeposition grinding wheel and manufacture thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009061560A (en) * 2007-09-07 2009-03-26 Mitsubishi Materials Corp Electrodeposition tool
JP2014140922A (en) * 2013-01-23 2014-08-07 Toyoda Van Moppes Ltd Electrodeposition grinding wheel

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