JP2003300166A - Multi-layer structure blade and method for manufacture thereof - Google Patents
Multi-layer structure blade and method for manufacture thereofInfo
- Publication number
- JP2003300166A JP2003300166A JP2002106882A JP2002106882A JP2003300166A JP 2003300166 A JP2003300166 A JP 2003300166A JP 2002106882 A JP2002106882 A JP 2002106882A JP 2002106882 A JP2002106882 A JP 2002106882A JP 2003300166 A JP2003300166 A JP 2003300166A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- abrasive grains
- green sheet
- layer structure
- abrasive
- 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
Links
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、セラミックや金属
あるいはそれらの複合材用を切断したり、溝入れ加工を
するのに有効な、砥粒サイズが部分的に異なる多層構造
のブレード及びその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layered blade having a partially different abrasive grain size, which is effective for cutting or grooving ceramics, metals or composite materials thereof, and manufacturing thereof. It is about the method.
【０００２】[0002]
【従来の技術】砥粒サイズが部分的に異なる多層構造の
ブレードは、特開昭６３−１７４８７７号公報等により
既に知られている。該従来の多層構造のブレードは、大
径超砥粒を金属メッキ相中に分散してなる中央砥粒層の
両側に、前記大径超砥粒の１／２以下の平均粒径を有す
る小径超砥粒を金属メッキ相中に分散してなる外側砥粒
層を形成しており、そのために、（ａ）被研削材への切
り込みを、主に大径超砥粒によって行うので、切れ味及
び研削速度が向上でき、（ｂ）被研削材の研削断面を小
径超砥粒によって研削するので、研削断面におけるチッ
ピングやむしりが低減でき、研削断面の平面精度を向上
させることができ、（ｃ）研削作業の進行につれて刃先
部の断面が凸形に摩耗するので、ブレードの刃先の振れ
を防ぐことができ、真っ直ぐな研削が行える、といった
効果を有している。2. Description of the Related Art A blade having a multilayer structure in which abrasive grain sizes are partially different is already known from JP-A-63-174877. The conventional multi-layered blade has a small diameter having an average particle size of 1/2 or less of the large-diameter superabrasive particles on both sides of a central abrasive layer formed by dispersing large-diameter superabrasive particles in a metal plating phase. An outer abrasive grain layer is formed by dispersing superabrasive grains in a metal plating phase. For this reason, (a) cutting into a material to be ground is mainly performed with large-diameter superabrasive grains, so The grinding speed can be improved, and (b) the grinding cross section of the material to be ground is ground by the small-diameter superabrasive grains, so that chipping and peeling in the grinding cross section can be reduced, and the plane accuracy of the grinding cross section can be improved, (c) As the grinding operation progresses, the cross section of the blade edge wears in a convex shape, so that the blade edge of the blade can be prevented from swinging, and straight grinding can be performed.
【０００３】しかし、この多層構造のブレードは、電鋳
法により製造されるものであり、そのために、砥粒を結
合させる結合材としては金属メッキ（Ｎｉメッキ）の層
しか選択できず、ブレードの用途に応じた最適な結合材
を選択的に利用できないという大きな問題点を有してい
るばかりでなく、砥粒含有量（集中度）を簡易に変える
ことが困難であり、ブレードの剛性や耐摩耗性、耐久性
を向上させることが困難であった。However, this multi-layered blade is manufactured by an electroforming method. Therefore, only a metal-plated (Ni-plated) layer can be selected as a bonding material for bonding abrasive grains. Not only does it have a major problem in that it is not possible to selectively use the optimum bonding material for each application, but it is also difficult to easily change the abrasive grain content (concentration), and the blade rigidity and It was difficult to improve wear resistance and durability.
【０００４】また、電鋳法により砥粒サイズが部分的に
異なる多層構造のブレードを製造する場合には、通常、
砥粒サイズを変えるために電鋳中のブレードを他の電鋳
槽に移す必要があり、その間は電鋳を中止して電鋳中の
ブレードを空気中に露出させるため、製造した多層構造
のブレードを高負荷で使用する場合には層間剥離する可
能性もあり、それを抑止するための配慮を必要とした。In the case of manufacturing a multi-layered blade having different abrasive grain sizes by electroforming, it is usually
It is necessary to transfer the blade being electroformed to another electroforming tank in order to change the abrasive grain size, during which electroforming is stopped and the blade being electroformed is exposed to the air, so that the manufactured multilayer structure When the blade is used under high load, there is a possibility of delamination, so consideration was needed to prevent it.
【０００５】[0005]
【発明が解決しようとする課題】本発明の課題は、上記
電鋳法により製造される多層構造ブレードの問題点を解
決し、ブレードの用途に応じた最適な結合材を広範囲に
選択できるようにしたところの、砥粒サイズが部分的に
異なる多層構造ブレード、及びそのの製造方法を提供す
ることにある。本発明の他の課題は、多層構造ブレード
における各層の砥粒含有量（集中度）を容易に変えるこ
とができ、多層構造ブレードの各層の厚さの調整等と関
連して被切削材の性質に十分に適合する剛性や耐摩耗
性、耐久性を持たせることを可能にし、ブレードの用途
に適合する最適な性能を備えた多層構造ブレードを製造
可能にする方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the multi-layer structure blade manufactured by the above electroforming method, and to make it possible to select a wide range of optimum binders according to the application of the blade. It is another object of the present invention to provide a multilayer structure blade having partially different abrasive grain sizes and a method for manufacturing the same. Another object of the present invention is to easily change the abrasive grain content (concentration level) of each layer in a multilayer structure blade, and to adjust the thickness of each layer of the multilayer structure blade, etc. It is to provide a method capable of producing a multilayer structure blade having optimum performance that suits the application of the blade, by making it possible to have rigidity, wear resistance, and durability that are sufficiently adapted to the above.
【０００６】また、本発明の他の課題は、電鋳法により
砥粒サイズが部分的に異なる多層構造のブレードを製造
する場合に生じる可能性がある層間剥離の問題を解消し
た多層構造ブレード及びその製造方法を提供することに
ある。Another object of the present invention is to solve the problem of delamination which may occur when a blade having a multilayer structure in which abrasive grain sizes are partially different is manufactured by an electroforming method. It is to provide the manufacturing method.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
の本発明の多層構造ブレードは、ダイヤモンド及び／又
はｃＢＮ砥粒で複数の砥粒サイズを有するものを、それ
ぞれ結合材粉末と混合してグリーンシートとし、それら
のグリーンシートを、中心部側に砥粒が粗粒子のものを
配し、両面表層側に砥粒が細粒子のものを配した傾斜構
造に積層して、それらの加圧焼結又は焼成により、各グ
リーンシートで形成される円盤状の砥石薄板が一体に接
合された多層構造のブレード成形体としたことを特徴と
するものである。The multi-layer structure blade of the present invention for solving the above-mentioned problems is obtained by mixing diamond and / or cBN abrasive grains having a plurality of abrasive grain sizes with a binder powder. As green sheets, these green sheets are laminated in a tilted structure with coarse-grained abrasive grains on the center side and fine-grained abrasive grains on both surface layers, and pressurizing them. It is characterized in that it is a multi-layered blade molded body in which disc-shaped grindstone thin plates formed of each green sheet are integrally joined by sintering or firing.
【０００８】上記多層構造ブレードの好ましい実施形態
においては、中心部側に砥粒が粗粒子のグリーンシート
を配し、その両面に砥粒が同サイズの細粒子のグリーン
シートをそれぞれ積層して、３層構造のブレード成形体
として構成される。また、一般的に、結合材に対する各
サイズの砥粒の混合比は５〜５０体積％の範囲内に設定
される。In a preferred embodiment of the above-mentioned multilayer structure blade, a green sheet having abrasive grains as coarse particles is arranged on the center side, and fine particle green sheets having abrasive grains of the same size are laminated on both sides of the green sheet. It is configured as a blade molding having a three-layer structure. Further, generally, the mixing ratio of the abrasive grains of each size to the binder is set within the range of 5 to 50% by volume.
【０００９】一方、本発明の多層構造ブレードの製造方
法は、ダイヤモンド及び／又はｃＢＮ砥粒で複数の砥粒
サイズを有するものを、それぞれ結合材粉末と混合して
グリーンシートとし、それらのグリーンシートを、中心
部側に砥粒が粗粒子のものを配し、両面表層側に砥粒が
細粒子のものを配して傾斜構造の積層体とし、上記積層
体を型に充填して加圧焼結又は焼成することにより、各
グリーンシートで形成される円盤状の砥石薄板が一体に
接合された多層構造のブレード成形体を得ることを特徴
とするものである。On the other hand, in the method for manufacturing a multilayer structure blade of the present invention, diamond and / or cBN abrasive grains having a plurality of abrasive grain sizes are mixed with a binder powder to form green sheets, and the green sheets are prepared. Is placed on the center side with coarse grains and on both side surface layers with fine grains to form a laminated structure with a tilted structure, and the laminated body is filled in a mold and pressed. By sintering or firing, a blade molded body having a multi-layer structure in which the disc-shaped grindstone thin plates formed of the respective green sheets are integrally bonded is obtained.
【００１０】上記多層構造ブレードの製造方法の好まし
い実施形態においては、砥粒サイズの異なる２種の砥粒
をそれぞれ結合材粉末に５〜５０体積％混合して、第１
及び第２の混合粉末を作製し、それらの混合粉末を加圧
成形して得た砥粒が粗粒子の第１のグリーンシートを中
心側に、その両面に砥粒が細粒子の第２のグリーンシー
トをそれぞれ配して、３層構造の積層体とし、この積層
体の加圧焼結又は焼成により３層構造のブレード成形体
が形成される。In a preferred embodiment of the method for manufacturing a multi-layer structure blade, two kinds of abrasive grains having different abrasive grain sizes are mixed with a binder powder in an amount of 5 to 50% by volume,
And a second mixed powder is prepared, and the mixed green powder is pressure-molded, and the first green sheet having coarse particles as the abrasive grains is located on the center side, and the second green particles having fine particles are provided on both sides thereof. The green sheets are respectively arranged to form a laminated body having a three-layer structure, and the blade formed body having a three-layer structure is formed by pressure sintering or firing of the laminated body.
【００１１】上記多層構造ブレードの製造方法において
は、一般的に、結合材として、金属、樹脂、金属と樹脂
の複合材、金属酸化物、周期律のＩＶａ，Ｖａ，ＶＩａ
族遷移金属の炭化物、窒化物、ホウ化物及びこれらの複
合化合物の１種若しくは２種以上の混合物より成る硬質
相、又は、Ｆｅ，Ｃｏ，Ｎｉ，Ｃｕ，Ｔｉ，Ｃｒの１種
若しくは２種以上の金属結合相より成る硬質合金が用い
られ、また、上記ブレードの積層体は、通常、１０〜５
０００ｋｇ／ｃｍ２で加圧しながら、１５０〜１３００
℃の温度で加圧焼結又は焼成される。In the above-mentioned method for manufacturing a multi-layer structure blade, generally, as a binder, metal, resin, composite material of metal and resin, metal oxide, IVa, Va, VIa of the periodic law.
Hard phase consisting of one or a mixture of two or more kinds of group transition metal carbides, nitrides, borides and their complex compounds, or one or more kinds of Fe, Co, Ni, Cu, Ti, Cr A hard alloy composed of the metallic binder phase of 10 to 5 is used, and the blade laminate is usually 10 to 5
150 to 1300 while pressurizing at 000 kg / cm 2.
Pressure sintering or firing is performed at a temperature of ° C.
【００１２】上記構成を有する本発明の多層構造ブレー
ド及びその製造方法によれば、積層したグリーンシート
の焼結によって多層構造ブレードを製造するため、従来
の電鋳法とは異なり、ブレードの用途に応じた最適な結
合材を、焼結又は焼成に利用できる広範囲なものの中か
ら自由に選択することができ、特に硬質合金その他の硬
質高強度材を用いることにより、薄いブレードでありな
がら剛性や耐摩耗性、耐久性に優れた多層構造ブレード
を得ることができる。また、樹脂を用いることにより、
弾性率の小さいブレードを得ることができる。According to the multilayer structure blade and the manufacturing method thereof of the present invention having the above-mentioned constitution, since the multilayer structure blade is manufactured by sintering the laminated green sheets, it is different from the conventional electroforming method in the use of the blade. The optimum binder can be freely selected from a wide range of materials that can be used for sintering or firing.By using hard alloys and other hard and high-strength materials in particular, it is possible to achieve rigidity and durability even with a thin blade. It is possible to obtain a multi-layer structure blade having excellent wear resistance and durability. Also, by using a resin,
A blade having a small elastic modulus can be obtained.
【００１３】また、砥粒サイズが部分的に異なる多層構
造ブレードを得るに際し、結合材粉末に混合する砥粒の
混合割合を変えるだけで、簡単にブレードを構成する各
層の砥粒含有量（集中度）を容易に変えることができ、
更にグリーンシートの厚さを適宜変えることにより、ブ
レードの各層の厚さも任意に変えることができる。した
がって、例えば目づまりがしやすい被加工材に対して
は、砥粒含有量（集中度）を下げてブレードにおける砥
粒間隔をあけることにより、切れ味を持続させると同時
に加工負荷も小さくすることができ、また、ブレードが
摩耗しやすい被加工材に対しては、砥粒含有量を上げる
ことにより摩耗が抑えられ、加工面粗度も改善したブレ
ードを製造することができるなど、被加工材の性質に十
分に適合する剛性や耐摩耗性、耐久性を持たせ、ブレー
ドの用途に適合する最適な性能を備えた多層構造ブレー
ドを製造することができる。しかも、電鋳法により砥粒
サイズが部分的に異なる多層構造のブレードを製造する
場合のように、層間剥離の問題も解消した多層構造ブレ
ードが得られる。Further, when obtaining a multi-layer structure blade having partially different abrasive grain sizes, simply changing the mixing ratio of the abrasive grains to be mixed with the binder powder, the abrasive grain content of each layer constituting the blade (concentrated Degree) can be easily changed,
Further, the thickness of each layer of the blade can be arbitrarily changed by appropriately changing the thickness of the green sheet. Therefore, for example, for a workpiece that is prone to clogging, it is possible to maintain sharpness and reduce the processing load at the same time by reducing the abrasive grain content (concentration) and opening the abrasive grain intervals in the blade. Also, for a work material in which the blade is easily worn, wear can be suppressed by increasing the abrasive content, and a blade with improved surface roughness can be manufactured. It is possible to manufacture a multi-layered blade having rigidity, wear resistance, and durability that are sufficiently adapted to, and optimal performance that is suited to the application of the blade. Moreover, it is possible to obtain a multi-layered blade in which the problem of delamination is solved, as in the case of manufacturing a multi-layered blade having different abrasive grain sizes by electroforming.
【００１４】[0014]
【発明の実施の形態】図１は、本発明に係る多層構造ブ
レードの実施例の要部を示すもので、この多層構造ブレ
ード１は、少なくとも３層のグリーンシートの加圧焼結
又は焼成により、各グリーンシートで形成される円盤状
の砥石薄板１１，１２，１３が一体に接合された多層構
造のブレード成形体としたものである。各グリーンシー
トは、ダイヤモンド若しくはｃＢＮ砥粒、又はそれらの
混合砥粒で複数の砥粒サイズを有するものを、それぞれ
結合材粉末と混合したうえでグリーンシートとし、それ
らのグリーンシートを、中心部側に砥粒が粗粒子のもの
を配し、両面表層側に砥粒が細粒子のものを配した傾斜
構造に積層して、それらの加圧焼結又は焼成により、各
グリーンシートで形成される円盤状の砥石薄板１１，１
２，１３が一体に接合された多層構造のブレード成形体
としている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an essential part of an embodiment of a multi-layered blade according to the present invention. This multi-layered blade 1 is produced by pressure sintering or firing of at least three layers of green sheets. The multi-layered blade molded body in which the disc-shaped grindstone thin plates 11, 12, 13 formed of the respective green sheets are integrally joined. For each green sheet, diamond or cBN abrasive grains or mixed abrasive grains having a plurality of abrasive grain sizes are mixed with a binder powder to form green sheets. Laminated with coarse particles of abrasive grains, and laminated with an inclined structure in which abrasive grains of fine particles are arranged on both surface layers, and formed into each green sheet by pressure sintering or firing. Disc-shaped grindstone thin plate 11,1
The blade molded body has a multilayer structure in which 2 and 13 are integrally joined.
【００１５】上記図１のブレード成形体は、その中心部
側に粗粒子の砥粒１１ａが結合材１１ｂ中に混入された
砥石薄板１１を配し、その両面表層側に細粒子の砥粒１
２ａ，１３ａが結合材１２ｂ，１３ｂ混入された砥石薄
板１２，１３を配して３層に積層したもので、砥粒に関
して傾斜構造を持つようにして焼結又は焼成したもので
ある。そして、この図１に示すブレード成形体では、中
心部側の砥石薄板１１の両面に積層した砥石薄板１２，
１３における砥粒１２ａ，１３ａとして、砥石薄板１１
内の砥粒１１ａよりも平均粒径が小さい互いに同サイズ
の細粒子を用いている。なお、本発明のブレード成形体
は、必ずしも３層とする必要はなく、例えば、図１の中
央部側の砥石薄板１１に対応するものを２層にすると
か、中央部側の砥石薄板１１と両面表層側の砥石薄板１
２，１３との間に中間層を介在させるなど、適宜数を積
層したものとすることができる。The blade molded body of FIG. 1 has a grindstone thin plate 11 in which coarse particles of abrasive grains 11a are mixed in a bonding material 11b on the central side thereof, and fine particle abrasive grains 1 on both surface layers thereof.
Grindstone thin plates 12 and 13 mixed with binders 12b and 13b are laminated and laminated in three layers 2a and 13a, which are sintered or fired so as to have an inclined structure with respect to abrasive grains. Then, in the blade molded body shown in FIG. 1, the grindstone thin plates 12 laminated on both surfaces of the grindstone thin plate 11 on the center side,
As the abrasive grains 12a and 13a in 13, the grindstone thin plate 11
Fine particles having the same size as each other and having an average particle diameter smaller than that of the abrasive grains 11a are used. The blade molded body of the present invention does not necessarily have to have three layers, and for example, one corresponding to the central portion side grindstone thin plate 11 in FIG. 1 may be formed into two layers, or the central portion side grindstone thin plate 11 and Grindstone thin plate on both surface layers 1
An appropriate number of layers may be laminated by interposing an intermediate layer between the layers 2 and 13.
【００１６】上記砥石薄板１１〜１３における結合材１
１ｂ〜１３ｂとしては、金属、樹脂、金属と樹脂の複合
材、金属酸化物、周期律のＩＶａ，Ｖａ，ＶＩａ族遷移
金属の炭化物、窒化物、ホウ化物及びこれらの複合化合
物の１種若しくは２種以上の混合物より成る硬質相、又
は、Ｆｅ，Ｃｏ，Ｎｉ，Ｃｕ，Ｔｉ，Ｃｒの１種若しく
は２種以上の金属結合相より成る硬質合金などを好適に
用いることができる。中心部側の砥石薄板１１における
結合材と、その両側における砥石薄板１２，１３におけ
る結合材とは、それらの間で剥離が生じるのを避けるた
めに同一のものであるのが望ましいが、それぞれの砥粒
の機能との関連で異なる材料を用いることもできる。こ
の場合、多層構造のブレードに層間剥離が生じないよう
な結合材を選択する必要がある。Bonding material 1 in the above-mentioned grindstone thin plates 11 to 13
Examples of 1b to 13b include one or two of a metal, a resin, a composite material of a metal and a resin, a metal oxide, a carbide of a group IVa, Va, or VIa transition metal of the periodic system, a nitride, a boride, and a compound compound thereof. A hard phase composed of a mixture of two or more kinds, or a hard alloy composed of one or more kinds of metal-bonded phases of Fe, Co, Ni, Cu, Ti and Cr can be preferably used. It is desirable that the binding material on the grindstone thin plate 11 on the central portion side and the binding material on the grindstone thin plates 12 and 13 on both sides thereof be the same in order to avoid peeling between them. Different materials can also be used in relation to the function of the abrasive grains. In this case, it is necessary to select a binder that does not cause delamination in the multilayer blade.
【００１７】上記結合材に対する各サイズのダイヤモン
ド又はｃＢＮ砥粒の混合比としては５〜５０体積％が適
切であり、混合比がその下限値未満では、切断に寄与す
る砥粒が少な過ぎて研削抵抗が大きくなり、かつ耐摩耗
性が十分でなく、加工精度の悪化を防ぐのが困難にな
り、また、混合比が上限値を超えると、砥粒間隔が小さ
くなって、加工時に目詰まりが生じ易くなり、かつ加工
物に対する砥粒の食い込みが悪くなり、加えて衝撃に対
して弱くなり、切断加工時にブレードが破損し易くなっ
て危険になる。この体積率は、１０〜３５％とするのが
更に望ましく、それによって、所期の効果をより高める
ことができる。上記粗粒子及び細粒子の砥粒の砥粒サイ
ズの選択は、金属あるいはセラミックス、あるいはそれ
らの複合材等の被加工材の要求する加工品質、加工精度
によって決定される。A suitable mixing ratio of diamond or cBN abrasive grains of each size with respect to the above-mentioned binder is 5 to 50% by volume. If the mixing ratio is less than the lower limit value, too few abrasive grains contribute to cutting and grinding is performed. Resistance becomes large, and wear resistance is not sufficient, it becomes difficult to prevent deterioration of processing accuracy, and if the mixing ratio exceeds the upper limit, the abrasive grain interval becomes small and clogging during processing becomes It is likely to occur, and the abrasive grains do not easily bite into the work piece, and in addition, it becomes vulnerable to impact, and the blade is easily damaged during the cutting process, which is dangerous. It is more desirable that this volume ratio be 10 to 35%, whereby the desired effect can be further enhanced. The selection of the abrasive grain size of the abrasive grains of the coarse particles and the fine particles is determined by the processing quality and the processing accuracy required of the work material such as metal or ceramics, or a composite material thereof.
【００１８】次に、上記多層構造ブレードの製造方法に
ついて説明する。本発明に基づく多層構造ブレードの製
造に際しては、まず、ダイヤモンド若しくはｃＢＮ砥
粒、又はそれらの混合物で、複数の砥粒サイズを有する
ものを、それぞれ結合材粉末と５〜５０体積％混合し
て、それらの混合粉末をそれぞれグリーンシートとし、
それらのグリーンシートを中心部側に砥粒が粗粒子のも
のを配し、両面表層側に砥粒が細粒子のものを配して傾
斜構造の積層体とする。Next, a method of manufacturing the above multi-layer structure blade will be described. In the production of the multi-layered blade according to the present invention, first, diamond or cBN abrasive grains, or a mixture thereof, having a plurality of abrasive grain sizes, is mixed with a binder powder in an amount of 5 to 50% by volume, respectively. Each of these mixed powders is used as a green sheet,
These green sheets are provided with a coarse abrasive grain on the center side and a fine abrasive grain on both surface layers to form a laminated structure having an inclined structure.
【００１９】結合材としては、前述した硬質相や硬質合
金等を用いることができ、これらの結合材は、製造しよ
うとするブレードの用途に応じて適宜選択される。各砥
石薄板を構成するグリーンシートの砥粒含有量（集中
度）は、結合材粉末に混合する砥粒の混合割合を変える
だけで、簡単に調整しることができる。したがって、目
づまりがしやすい被研削材に対しては、砥粒含有量（集
中度）を下げてブレードを構成する砥粒間隔を開けるこ
とにより、切れ味が持続し、加工負荷も小さいブレード
を製造することができ、ブレード摩耗がしやすい被研削
材に対しては、砥粒含有量（集中度）を上げることによ
り、摩耗が抑えられ、加工面粗度も改善したブレードを
製造することができる。As the binder, the above-mentioned hard phase, hard alloy or the like can be used, and these binders are appropriately selected according to the application of the blade to be manufactured. The abrasive grain content (concentration) of the green sheet constituting each grindstone thin plate can be easily adjusted by changing the mixing ratio of the abrasive grains mixed with the binder powder. Therefore, for a material to be ground that is apt to be clogged, the sharpness is sustained and the processing load is small by making the abrasive grain content (concentration degree) lower and opening the abrasive grain intervals forming the blade. For the material to be ground, which is likely to be worn by the blade, by increasing the abrasive grain content (concentration), it is possible to manufacture a blade in which the wear is suppressed and the processed surface roughness is improved.
【００２０】そして、上記積層体を型に充填し、その結
合材の種類に応じて、１０〜５０００ｋｇ／ｃｍ２で加
圧しながら、１５０〜１３００℃の温度で焼結又は焼成
することにより、各グリーンシートで形成される円盤状
の砥石薄板が一体に接合された多層構造のブレード成形
体を得る。Then, by filling the above-mentioned laminated body in a mold and sintering or firing at a temperature of 150 to 1300 ° C. while applying a pressure of 10 to 5000 kg / cm 2 depending on the kind of the binder, A blade-shaped body having a multi-layered structure in which a disk-shaped grindstone thin plate formed of a green sheet is integrally bonded is obtained.
【００２１】その際、上記型に充填する各グリーンシー
トの厚さを任意に変えることにより、各砥石薄板の板
厚、あるいは各砥石薄板の板圧比を任意に調整した３層
構造のブレード成形体を得ることができる。例えば、中
心部側の砥粒が細粒子の砥石薄板の板厚を大きくするこ
とにより被研削材への切り込みを重視したブレードを製
造することができ、また、両表面側の砥粒が細粒子の砥
石薄板の板厚を大きくすることにより、研削断面におけ
るチッピングやむしりの低減を重視したブレードを製造
することができる。At this time, a blade molded body having a three-layer structure in which the thickness of each grindstone thin plate or the plate pressure ratio of each grindstone thin plate is arbitrarily adjusted by arbitrarily changing the thickness of each green sheet filled in the mold. Can be obtained. For example, the abrasive grains on the center side can be manufactured by increasing the thickness of the grindstone thin plate of fine particles to produce a blade that emphasizes cutting into the work material, and the abrasive grains on both surface sides are fine particles. By increasing the plate thickness of the whetstone thin plate, it is possible to manufacture a blade that emphasizes the reduction of chipping and peeling in the ground cross section.
【００２２】更に、このブレード成形体は、中心部側に
配置した砥石薄板における粗粒子の砥粒による被加工物
への加工ダメージが排除できるようにすることが必要で
あるため、各砥石薄板の厚さは、被加工物に要求される
加工特性によって定められるべきである。しかし、中心
部側の砥石薄板が薄くなれば、加工品質がよくなるもの
の、両面側の細粒子の砥粒をもつ砥石薄板の厚さが増し
て目詰まりが発生しやすくなり、その結果、目立ての頻
度が多くなって、ブレードの寿命も短くなることも考慮
する必要がある。Further, since this blade molded body needs to be able to eliminate the processing damage to the work piece due to the abrasive grains of the coarse particles in the grindstone thin plate arranged on the center side, The thickness should be determined by the processing characteristics required for the work piece. However, if the grindstone thin plate on the center side becomes thinner, the processing quality will improve, but the thickness of the grindstone thin plate with the fine-grained abrasive grains on both sides will increase, and clogging will easily occur, and as a result, It must also be taken into account that the frequency is high and the life of the blade is short.
【００２３】このような本発明の多層構造ブレードによ
れば、砥粒サイズが部分的に異なる多層構造ブレードを
焼結法によって成形するようにしているので、ブレード
の用途に応じた最適な結合材を広範囲の材料から選択し
て、用途に適した多層構造ブレードを得ることができ
る。なお、図１によって説明した上記多層構造ブレード
１は、図２及び図３に示すように、スペーサ２１を介し
てそれらの複数を一定間隔で配置し、一対の取付用フラ
ンジ２２，２２により回転軸２３に挟持させて、ナット
２４により締付け固定するなどの形態で、被加工物の切
断等に供されるものであり、その場合に、上記多層構造
ブレードは、オールブレードタイプ又は芯金タイプのブ
レードとして構成することができる。According to the multi-layer structure blade of the present invention as described above, the multi-layer structure blade having different abrasive grain sizes is formed by the sintering method. Can be selected from a wide range of materials to obtain a multilayer blade suitable for the application. In addition, as shown in FIGS. 2 and 3, the multilayer structure blade 1 described with reference to FIG. 1 has a plurality of them arranged at regular intervals via a spacer 21 and has a pair of mounting flanges 22 and 22 for rotating shafts. It is used for cutting a work piece in a form of being sandwiched by 23 and tightened and fixed by a nut 24. In that case, the multilayer structure blade is an all-blade type or core metal type blade. Can be configured as.
【００２４】[0024]
【実施例】以下に本発明の実施例を比較例と対比して具
体的に説明するが、本発明はこの実施例に限定されるも
のではない。EXAMPLES Examples of the present invention will be specifically described below in comparison with comparative examples, but the present invention is not limited to these examples.
【００２５】〔実施例１〕Ｃｕ８０重量％、Ｓｎ２０重
量％の平均粒子径１０μｍのＣｕ−Ｓｎ合金粉末（結合
材）７５体積％と１５００メッシュのダイヤモンド砥粒
２５体積％、及び同じＣｕ−Ｓｎ合金粉末７５体積％と
１０００メッ シュのダイヤモンド砥粒２５体積％を、
それぞれ乳鉢で個別的に混合した。そして、それぞれに
８重量％濃度のＰＶＡ成形バインダーを体積で１０％添
加して更に混合した。乾燥後、φ１０２×３５Ｈの型に
Ｃｕ−Ｓｎ合金粉末と１５００メッシュのダイヤモンド
砥粒の混合粉末を充填し、１ｔ／ｃｍ２の加圧により、
グリーンシートで０．１５ｍｍの厚さになるように、２
枚の成形体を作成した。同様に、Ｃｕ−Ｓｎ合金粉末と
１０００メッシュのダイヤモンド砥粒の混合粉末を型に
充填し、１ｔ／ｃｍ２の加圧により、グリーンシートで
０．１５ｍｍの厚さになるように、１枚の成形体を作成
した。Example 1 80% by weight of Cu, 20% by weight of Sn and 75% by volume of Cu—Sn alloy powder (bonding material) having an average particle diameter of 10 μm, 25% by volume of diamond abrasive grains of 1500 mesh, and the same Cu—Sn alloy 75% by volume of powder and 25% by volume of 1000 mesh diamond abrasive grains,
Each was individually mixed in a mortar. Then, 10% by volume of PVA molding binder having a concentration of 8% by weight was added to each and further mixed. After drying, a mixture of Cu—Sn alloy powder and 1500 mesh diamond abrasive grains was filled in a mold of φ102 × 35H, and a pressure of 1 t / cm 2 was applied.
2 so that the thickness of the green sheet is 0.15mm
A sheet of molded body was prepared. Similarly, a mold was filled with a mixed powder of Cu—Sn alloy powder and 1000-mesh diamond abrasive grains, and a green sheet had a thickness of 0.15 mm by a pressure of 1 t / cm 2 . A molded body was created.
【００２６】そして、粗粒子の砥粒を用いた後者の成形
体を中心部側にして、その両面側に前者の成形体を重
ね、砥石薄板を３層に積層したブレード成形体を作製し
た。次に、この３層構造のブレード成形体を、φ１０
２．５×３４．５Ｈのカーボン型に押入し、０．５ｔ／
ｃｍ２で加圧成形しながら、８００℃で１０分間保持し
て焼成した。これを、全体の厚さが０．２２５ｍｍにな
るようにラップ加工し、中心部側の１０００メッシュダ
イヤモンドの層が約０．０７５ｍｍ、両面側の１５００
メッシュダイヤモンドの層がそれぞれ約０．０７５ｍｍ
になるようにした３層タイプのダイヤモンドブレード成
形体を得た。Then, the latter molded body using coarse-grained abrasive grains was used as the central portion side, and the former molded body was overlaid on both sides thereof to prepare a blade molded body in which three grinding stone thin plates were laminated. Next, the blade molded body having the three-layer structure was
0.5t / press into 2.5 × 34.5H carbon mold
While pressure-molding at cm 2 , it was held at 800 ° C. for 10 minutes and baked. This was lapped so that the total thickness was 0.225 mm, the layer of 1000 mesh diamond on the center side was about 0.075 mm, and 1500 on both sides.
Each layer of mesh diamond is about 0.075mm
A three-layer type diamond blade compact having the above structure was obtained.
【００２７】得られたブレード成形体の外径及び内径
を、それぞれφ１０２×４０Ｈに仕上げ、突き出しが３
ｍｍになるようにステンレス製スペーサを用いてフラン
ジに組み込み（図２及び図３参照）、機械に装着した。
被加工物の切断には、スライシングマシンを使用し、砥
石回転数１０，０００ｒｐｍ、送り速度１５０ｍｍ／分
で切断加工を行った。切断用被加工物は、磁気ヘッド用
素材として使用されている、長さ７０ｍｍ、厚さ１．２
ｍｍのＡｌ２Ｏ３−ＴｉＣを、フェライトにエポキシ系
樹脂で接着したものである。切断の評価は、７０ｍｍ長
さのＡｌ２Ｏ３−ＴｉＣを０．５ｍｍのピッチで１００
ライン加工し、面粗度及び端面のチッピングの大きさ、
加工面のうねり、研削抵抗、ブレードの摩耗を測定する
ことによって行った。The outer diameter and the inner diameter of the obtained blade molded body are respectively finished to φ102 × 40H, and the protrusion is 3
The spacer was assembled into a flange using a stainless steel spacer (see FIGS. 2 and 3) so as to have a size of mm and mounted on a machine.
A slicing machine was used to cut the workpiece, and the cutting was performed at a grindstone rotation speed of 10,000 rpm and a feed rate of 150 mm / min. The work piece for cutting is used as a material for a magnetic head and has a length of 70 mm and a thickness of 1.2.
mm 2 Al 2 O 3 —TiC is bonded to ferrite with an epoxy resin. For the evaluation of cutting, Al 2 O 3 —TiC having a length of 70 mm was 100 at a pitch of 0.5 mm.
Line processing, surface roughness and size of end face chipping,
It was performed by measuring the waviness of the processed surface, the grinding resistance, and the wear of the blade.
【００２８】上記により製造されたブレード成形体と、
後述する比較例として製造したブレード成形体の加工評
価を表１に示す。同表からわかるように、上記ブレード
成形体は、比較例に比してチッピング、研削抵抗、半径
摩耗（ブレードの摩耗）、切断バープロファイル（平面
度）、切断バーラフネス（面粗度）のいずれにおいても
優れていることが確認された。A blade molded body manufactured as described above;
Table 1 shows the processing evaluation of the blade molded body manufactured as a comparative example described later. As can be seen from the table, the above-mentioned blade molded body has any of chipping, grinding resistance, radius wear (blade wear), cutting bar profile (flatness), and cutting bar roughness (surface roughness) as compared with the comparative example. Was also confirmed to be excellent.
【表１】 [Table 1]
【００２９】〔比較例１〕Ｃｕ８０重量％、Ｓｎ２０重
量％の平均粒子径１０μｍのＣｕ−Ｓｎ合金粉末７５体
積％と、１５００メッシュのダイヤモンド砥粒２５体積
％を乳鉢で混合した。そして、８重量％濃度のＰＶＡ成
形バインダーを体積で１０％添加して更に混合した。乾
燥後、φ１０２×３５Ｈの型に上記混合粉末を充填し、
１ｔ／ｃｍ２ の加圧により、グリーンシートで０．４
５ｍｍの厚さになるように成形した。この成形体を、φ
１０２．５×３４．５Ｈのカーボン型に押入し、０．５
ｔ／ｃｍ２ で加圧成形しながら、８００℃で１０分間
保持して焼成した。これを全体の厚さが０．２２５ｍｍ
にラップ加工した。得られたブレード成形体の外径、内
径をそれぞれφ１０２×４０Ｈに仕上げ、上記実施例と
同様の切断試験を行った。この比較例のブレード成形体
３１の断面は、図４に示す部分拡大図のように、結合材
３１ｂ中に細粒子の砥粒３１ａだけを含む単層構造のも
のである。[Comparative Example 1] 75% by volume of Cu-Sn alloy powder of 80% by weight of Cu and 20% by weight of Sn and having an average particle diameter of 10 μm was mixed with 25% by volume of diamond abrasive grains of 1500 mesh in a mortar. Then, 10% by volume of PVA molding binder having a concentration of 8% by weight was added and further mixed. After drying, fill the φ102 × 35H mold with the mixed powder,
Pressurize 1t / cm 2 to 0.4 in green sheet
It was molded to have a thickness of 5 mm. This molded body is
Push into a carbon mold of 102.5 x 34.5H and
While pressure-molding at t / cm 2 , the temperature was maintained at 800 ° C. for 10 minutes for firing. The total thickness of this is 0.225mm
It was lapped. The outer diameter and the inner diameter of the obtained blade molded body were respectively finished to φ102 × 40H, and the same cutting test as that in the above-mentioned example was conducted. The cross section of the blade molded body 31 of this comparative example has a single layer structure in which only the fine abrasive grains 31a are contained in the binder 31b, as shown in the partially enlarged view of FIG.
【００３０】[0030]
【発明の効果】以上に詳述した本発明によれば、砥石の
砥粒含有量（集中度）を容易に変えることができ、多層
構造ブレードの各層の厚さや各層の厚さの割合を容易に
変えることができ、結合材の選択の幅を広げることが可
能な、砥粒サイズの異なる多層構造ブレード及びその製
造方法を提供することができる。又、本発明によれば、
薄いブレードでありながら剛性や耐摩耗性があり、加工
精度が高く、耐久性に優れた多層構造ブレード及びその
製造方法を提供することができる。According to the present invention described in detail above, the abrasive grain content (concentration) of the grindstone can be easily changed, and the thickness of each layer of the multilayer structure blade and the ratio of the thickness of each layer can be easily adjusted. It is possible to provide a multi-layer structure blade having different abrasive grain sizes and a method for manufacturing the same, which can be changed to a wide range of choices of the binder. Further, according to the present invention,
It is possible to provide a multi-layer structure blade which is thin and has rigidity and wear resistance, high processing accuracy, and excellent durability, and a method for manufacturing the same.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明に係る多層構造ブレードの実施例の一部
拡大縦断面図である。FIG. 1 is a partially enlarged vertical sectional view of an embodiment of a multilayer structure blade according to the present invention.
【図２】上記多層構造ブレードの使用態様を示す側面図
である。FIG. 2 is a side view showing a mode of use of the multilayer structure blade.
【図３】上記多層構造ブレードの使用態様を示す正面図
である。FIG. 3 is a front view showing a mode of use of the multilayer structure blade.
【図４】性能試験に比較例として用いたブレードの一部
拡大縦断面図である。FIG. 4 is a partially enlarged vertical sectional view of a blade used as a comparative example in a performance test.
１ 多層構造ブレード １１〜１３ 砥石薄板 １１ａ〜１３ａ 砥粒 １１ｂ〜１３ｂ 結合材 1 Multi-layer blade 11-13 Grindstone thin plate 11a to 13a Abrasive grains 11b-13b Binder
Claims (7)
の砥粒サイズを有するものを、それぞれ結合材粉末と混
合してグリーンシートとし、 それらのグリーンシートを、中心部側に砥粒が粗粒子の
ものを配し、両面表層側に砥粒が細粒子のものを配した
傾斜構造に積層して、それらの加圧焼結又は焼成によ
り、各グリーンシートで形成される円盤状の砥石薄板が
一体に接合された多層構造のブレード成形体とした、こ
とを特徴とする多層構造ブレード。1. A diamond and / or cBN abrasive grain having a plurality of abrasive grain sizes is mixed with a binder powder to form a green sheet, and the green sheet has coarse abrasive grains on the center side. Are laminated and laminated on an inclined structure in which abrasive grains having fine particles are arranged on both surface layers, and by pressure sintering or firing thereof, a disc-shaped grindstone thin plate formed by each green sheet is obtained. A multi-layered braid, which is a multi-layered braided body integrally joined.
を配し、その両面に砥粒が同サイズの細粒子のグリーン
シートをそれぞれ積層して、３層構造のブレード成形体
とした、ことを特徴とする請求項１に記載の多層構造ブ
レード。2. A blade green sheet having a three-layer structure is provided by arranging a green sheet having coarse particles as abrasive grains on the center side and laminating green sheets having fine particles having the same abrasive grains on both sides thereof. The multi-layer structure blade according to claim 1, wherein:
５〜５０体積％である、ことを特徴とする請求項１又は
２に記載の多層構造ブレード。3. The multi-layer structure blade according to claim 1, wherein the mixing ratio of the abrasive grains of each size to the binder is 5 to 50% by volume.
の砥粒サイズを有するものを、それぞれ結合材粉末と混
合してグリーンシートとし、 それらのグリーンシートを、中心部側に砥粒が粗粒子の
ものを配し、両面表層側に砥粒が細粒子のものを配して
傾斜構造の積層体とし、 上記積層体を型に充填して加圧焼結又は焼成することに
より、各グリーンシートで形成される円盤状の砥石薄板
が一体に接合された多層構造のブレード成形体を得る、
ことを特徴とする多層構造ブレードの製造方法。4. Diamond and / or cBN abrasive grains having a plurality of abrasive grain sizes are mixed with a binder powder to form a green sheet, and the green sheet has coarse grains on the center side. Of each green sheet by arranging the above-mentioned laminated body in a mold and pressurizing and sintering it. To obtain a blade-formed body having a multilayer structure in which the disc-shaped grindstone thin plates formed by are integrally joined,
A method for manufacturing a multi-layer structure blade, comprising:
結合材粉末に５〜５０体積％混合して、第１及び第２の
混合粉末を作製し、 それらの混合粉末を加圧成形して得た砥粒が粗粒子の第
１のグリーンシートを中心側に、その両面に砥粒が細粒
子の第２のグリーンシートをそれぞれ配して、３層構造
の積層体とし、 この積層体の加圧焼結又は焼成により３層構造のブレー
ド成形体を得る、ことを特徴とする請求項４に記載の多
層構造ブレードの製造方法。5. Two kinds of abrasive grains having different abrasive grain sizes are mixed with a binder powder in an amount of 5 to 50% by volume to prepare first and second mixed powders, and the mixed powders are pressure-molded. The first green sheet having coarse particles as the abrasive grains is arranged on the center side, and the second green sheets having fine particles as the abrasive grains are arranged on both sides of the first green sheet to form a laminate having a three-layer structure. The method for producing a multilayer structure blade according to claim 4, wherein a blade molded body having a three-layer structure is obtained by pressure sintering or firing of the body.
材、金属酸化物、周期律のＩＶａ，Ｖａ，ＶＩａ族遷移
金属の炭化物、窒化物、ホウ化物及びこれらの複合化合
物の１種若しくは２種以上の混合物より成る硬質相、又
は、Ｆｅ，Ｃｏ，Ｎｉ，Ｃｕ，Ｔｉ，Ｃｒの１種若しく
は２種以上の金属結合相より成る硬質合金である、こと
を特徴とする請求項４又は５に記載の多層構造ブレード
の製造方法。6. The binder is a metal, a resin, a composite material of a metal and a resin, a metal oxide, a carbide, a nitride, a boride of a transition metal of group IVa, Va, or VIa of the periodic table, or a composite compound thereof. A hard phase composed of one kind or a mixture of two or more kinds, or a hard alloy composed of one or more kinds of metal-bonded phases of Fe, Co, Ni, Cu, Ti and Cr. 4. The method for manufacturing a multilayer structure blade according to 4 or 5.
／ｃｍ２で加圧しながら、１５０〜１３００℃の温度で
焼結又は焼成する、ことを特徴とする請求項４又は５に
記載の多層構造ブレードの製造方法。7. A blade laminate comprising 10 to 5000 kg
The method for manufacturing a multilayer structure blade according to claim 4, wherein sintering or firing is performed at a temperature of 150 to 1300 ° C. while applying a pressure of / cm 2 .
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002106882A JP4084070B2 (en) | 2002-04-09 | 2002-04-09 | Manufacturing method of multilayer blade |
| MYPI20031041 MY130381A (en) | 2002-04-09 | 2003-03-25 | Multilayered blade and manufacturing method thereof |
| CNB031095526A CN100509292C (en) | 2002-04-09 | 2003-04-09 | Multi-layer cutter blade and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002106882A JP4084070B2 (en) | 2002-04-09 | 2002-04-09 | Manufacturing method of multilayer blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003300166A true JP2003300166A (en) | 2003-10-21 |
| JP4084070B2 JP4084070B2 (en) | 2008-04-30 |
Family
ID=28786444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002106882A Expired - Fee Related JP4084070B2 (en) | 2002-04-09 | 2002-04-09 | Manufacturing method of multilayer blade |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4084070B2 (en) |
| CN (1) | CN100509292C (en) |
| MY (1) | MY130381A (en) |
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| JP2008049412A (en) * | 2006-08-22 | 2008-03-06 | Read Co Ltd | Multilayer structure thin edge blade and its manufacturing method |
| JP2012192488A (en) * | 2011-03-16 | 2012-10-11 | Mitsubishi Materials Corp | Resin bond grinding wheel |
| CN103624699A (en) * | 2013-12-05 | 2014-03-12 | 湖南大学 | Combined grinding wheel for carrying out rough and fine centerless grinding on bar part |
| US20140357171A1 (en) * | 2012-01-31 | 2014-12-04 | Jtekt Corporation | Grinding wheel manufacturing method and grinding wheel |
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| US9321149B2 (en) | 2011-11-09 | 2016-04-26 | 3M Innovative Properties Company | Composite abrasive wheel |
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| US3067551A (en) * | 1958-09-22 | 1962-12-11 | Bethlehem Steel Corp | Grinding method |
| ZA713105B (en) * | 1971-05-12 | 1972-09-27 | De Beers Ind Diamond | Diamond and the like grinding wheels |
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| FR2535640A1 (en) * | 1982-11-09 | 1984-05-11 | Lignes Telegraph Telephon | Diamond-impregnated grinding wheel and its use. |
| CN2403547Y (en) * | 1999-12-25 | 2000-11-01 | 黄计高 | Compound sand wheel |
-
2002
- 2002-04-09 JP JP2002106882A patent/JP4084070B2/en not_active Expired - Fee Related
-
2003
- 2003-03-25 MY MYPI20031041 patent/MY130381A/en unknown
- 2003-04-09 CN CNB031095526A patent/CN100509292C/en not_active Expired - Lifetime
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| JP2012192488A (en) * | 2011-03-16 | 2012-10-11 | Mitsubishi Materials Corp | Resin bond grinding wheel |
| US9321149B2 (en) | 2011-11-09 | 2016-04-26 | 3M Innovative Properties Company | Composite abrasive wheel |
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| CN104907946B (en) * | 2015-05-25 | 2017-06-16 | 江苏华昌工具制造有限公司 | Sawtooth two-sided concave U sharp concrete laser welding cutting sheets |
| CN105196197A (en) * | 2015-08-28 | 2015-12-30 | 浙江工业大学 | Progressive mesh pneumatic grinding wheel and preparation method thereof |
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| WO2023183488A1 (en) * | 2022-03-23 | 2023-09-28 | Saint-Gobain Abrasives, Inc. | Abrasive articles and methods for forming the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100509292C (en) | 2009-07-08 |
| JP4084070B2 (en) | 2008-04-30 |
| MY130381A (en) | 2007-06-29 |
| CN1449893A (en) | 2003-10-22 |
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