JPH07308860A - Polishing tool member with stereoscopic working section and manufacture thereof - Google Patents

Polishing tool member with stereoscopic working section and manufacture thereof

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Publication number
JPH07308860A
JPH07308860A JP13624894A JP13624894A JPH07308860A JP H07308860 A JPH07308860 A JP H07308860A JP 13624894 A JP13624894 A JP 13624894A JP 13624894 A JP13624894 A JP 13624894A JP H07308860 A JPH07308860 A JP H07308860A
Authority
JP
Japan
Prior art keywords
tool
tool member
metal
abrasive
member 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.)
Pending
Application number
JP13624894A
Other languages
Japanese (ja)
Inventor
Hiroshi Ishizuka
博 石塚
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.)
ISHIZUKA KENKYUSHO
Ishizuka Research Institute Ltd
Original Assignee
ISHIZUKA KENKYUSHO
Ishizuka Research Institute Ltd
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 ISHIZUKA KENKYUSHO, Ishizuka Research Institute Ltd filed Critical ISHIZUKA KENKYUSHO
Priority to JP13624894A priority Critical patent/JPH07308860A/en
Publication of JPH07308860A publication Critical patent/JPH07308860A/en
Pending legal-status Critical Current

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  • Polishing Bodies And Polishing Tools (AREA)

Abstract

PURPOSE:To easily obtain a polishing tool member on which a sintered super abrasive grain layer is firmly stuck to the base body of a stereoscopic tool member at a low cost. CONSTITUTION:A super abrasive grain layer having very small amount of metal phases between particles is sinteredly stuck to the surfaces of a stereoscopic polishing work section 6 of a tool basic body 5 through metal phase of the practically same kind as this metal phase. In the next step, a male mold or the tool basic body 5 is formed of rigid material, and a female mold 3 having internal faces nearly corresponding to the outer face of the polishing work section 6 is formed of non-metal material (salt, for example), and powdered super abrasive grain is contained in the female mold 3, and the tool basic body 5 is made to go into this female mold 3 to make the powdered grains flow by pressing the powdered super abrasive grain to make the powder reach around the polishing work section for sintering the powdered super abrasive grain under the existence of sintering accelerating metal.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】 本発明は研摩工具部材、特に、
焼結超砥粒を含有する研摩作用部が立体的に構成され
た、研摩工具部材に関する。
FIELD OF THE INVENTION The present invention relates to abrasive tool members, especially
The present invention relates to a polishing tool member in which a polishing action portion containing sintered superabrasive grains is three-dimensionally configured.

【0002】[0002]

【従来の技術】 焼結ダイヤモンド層を同時焼結によっ
て超硬合金製基体に接合した焼結体素材が、切削用バイ
ト、線引きダイス、ドリルビット等の先端部およびその
他の研摩用品、耐摩耗部品の製造に広く用いられてい
る。このような焼結工程は数GPaの超高圧高温条件下
で行なわれるため、焼結体素材は、超高圧装置への収容
・処理に好都合な円板状ないしは円筒状に作製し、これ
を放電加工や研摩加工による後加工によって所定の工具
形状に仕上げるのが、一般的な手法となっている。この
際、平面形状に近い切削工具類については、得られた素
材を放電加工によってほぼ所定の寸法に切断し、刃先部
付近のみを研摩加工することによって、実用に供するこ
とが可能である。
2. Description of the Related Art A sintered body material in which a sintered diamond layer is joined to a cemented carbide substrate by simultaneous sintering is used as a cutting tool, a drawing die, a tip such as a drill bit, and other polishing articles and wear-resistant parts. Widely used in the manufacture of. Since such a sintering process is performed under an ultrahigh pressure and high temperature condition of several GPa, the sintered body material is formed into a disk shape or a cylindrical shape that is convenient for accommodation and treatment in an ultrahigh pressure apparatus, and this is discharged. It is a general method to finish a predetermined tool shape by post-processing such as processing and polishing. At this time, cutting tools having a planar shape can be put into practical use by cutting the obtained material to a substantially predetermined size by electric discharge machining and polishing only the vicinity of the cutting edge.

【0003】しかし工具チップや超高硬度を要求される
先端部の形状が角錐状や半球状等の立体構造を有するも
のについては、効果的な製法が知られていない。即ち、
素材を円筒状に構成する従来の同時焼結法では、超高硬
度先端部に相当する厚みの焼結ダイヤモンド層を必要と
することに加えて、後加工も複雑化する。このことは設
計・操作上、品質・歩留まり、材料コストにおいて次の
ような問題を生じるので、好ましくない。例えば焼結ダ
イヤモンド層の厚みを増すことは、多量の原料ダイヤモ
ンド粉末圧縮のために、焼結に用いる超高圧装置に大き
な加圧ストロークが必要となる。またこのために余分の
原料を無駄に消費することになる。一方焼結助剤として
の金属相は超硬側から供給されるので、原料ダイヤモン
ド微粉未量の増加に従って融液の移動が困難になり、焼
結不足の状態が生じやすい。また後加工は通常ダイヤモ
ンド砥石を用いて行なわれるが、後加工が複雑化するこ
とは、単結晶ダイヤモンドよりも研摩しにくい多結晶体
の加工に、高価なダイヤモンド砥石を相当量消費するこ
とになり、多くの加工工数と費用とを要することにな
る。
However, an effective manufacturing method has not been known for a tool tip or one having a three-dimensional structure such as a pyramid shape or a hemispherical shape at the tip end portion which requires ultrahigh hardness. That is,
The conventional simultaneous sintering method in which the material is formed into a cylindrical shape requires a sintered diamond layer having a thickness corresponding to the ultra-hardened tip portion, and the post-processing also becomes complicated. This is not preferable because it causes the following problems in design / operation, quality / yield, and material cost. For example, increasing the thickness of the sintered diamond layer requires a large pressure stroke in the ultra-high pressure device used for sintering due to the large amount of raw diamond powder compression. Further, this results in wasteful consumption of extra raw material. On the other hand, since the metal phase as a sintering aid is supplied from the cemented carbide side, it becomes difficult to move the melt as the amount of the raw material diamond fine powder increases, and the state of insufficient sintering tends to occur. Further, post-processing is usually performed using a diamond grindstone, but the complicated post-processing means that a considerable amount of expensive diamond grindstone is consumed to process a polycrystalline body that is harder to polish than single-crystal diamond. However, a lot of processing man-hours and costs will be required.

【0004】作用先端部が立体形状であるダイヤモンド
工具の製作には、同時焼結法の外に、所定の形状に予め
加工した硬質材料製の基体上に、CVD等の手法によっ
て多結晶膜を付着させることも行なわれている。しかし
付着強度が一般に大きくないため、特に衝撃が加わる加
工の分野においては、工具として用いることができない
状況にある。
In order to manufacture a diamond tool having a three-dimensional working tip, in addition to the simultaneous sintering method, a polycrystalline film is formed by a method such as CVD on a substrate made of a hard material which is previously processed into a predetermined shape. It is also attached. However, since the adhesion strength is not generally large, it cannot be used as a tool particularly in the field of processing where an impact is applied.

【0005】[0005]

【発明が解決しようとする課題】 したがって本発明の
目的は、従来技術に伴う上記諸問題を解決することによ
り、立体的形状の工具部材基体の表面に、超砥粒粒子同
士が本質的に直接結合により強力に結合してなる焼結超
砥粒層が、同時焼結により、工具基体の立体的構成を有
する研摩作用部表面に強力に接合されている研摩工具部
材、およびこのような研摩工具部材の製法を提供するこ
とにある。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems associated with the prior art so that superabrasive particles are essentially directly attached to the surface of a three-dimensionally shaped tool member substrate. An abrasive tool member in which a sintered superabrasive grain layer strongly bonded by bonding is strongly bonded to a surface of an abrasive action portion having a three-dimensional structure of a tool substrate by simultaneous sintering, and such an abrasive tool It is to provide a manufacturing method of a member.

【0006】[0006]

【課題を解決するための手段】 本発明においては、こ
のような性能を有する研摩工具部材は、相互に直接結合
した超砥粒粒子およびこの粒子間隙に存在する微小量の
金属相を有する焼結超砥粒層が、この金属相と実質的に
同種の金属相を介して、工具基体の立体的構成を有する
研摩作用部表面に固着されていることを特徴とする部材
として、具現される。この際超硬合金製の基体が用いら
れる場合には、ダイヤモンド粒子間およびダイヤモンド
層と基体との接合を仲介する微少量の金属相は、この基
体から供給される。
SUMMARY OF THE INVENTION In the present invention, an abrasive tool member having such performance has a sintered body having superabrasive grains directly bonded to each other and a minute amount of metallic phase existing in the grain gaps. It is embodied as a member characterized in that the superabrasive grain layer is fixed to the surface of the polishing action portion having a three-dimensional structure of the tool base through a metal phase of substantially the same kind as this metal phase. In this case, when a cemented carbide substrate is used, a very small amount of metal phase that mediates the bonding between the diamond particles and between the diamond layer and the substrate is supplied from this substrate.

【0007】また上記の研摩工具部材は、全体的に軸状
を呈しかつ先端部に立体的構成の研磨作用部を有する研
摩工具チップの製法において、雄型乃至工具基体を剛
性材で形成し、また工具の研摩作用部の外形に近似的
に対応する内面を有する雌型を非金属質材料で形成し、
雌型に超砥粒粉体を入れ、この雌型に工具基体を進
入させて超砥粒粉体を押すことにより流動させて研摩作
用部の周囲に到達せしめ、焼結助剤金属の存在下で超
砥粒粉体を熱力学的に安定な圧力温度条件下に供するこ
とにより、超砥粒相互間の焼結および工具基体との接合
を達成することを特徴とする製法によって、得られる。
Further, in the above-mentioned polishing tool member, in the method of manufacturing the polishing tool tip which has a shaft shape as a whole and has a polishing action portion of a three-dimensional structure at the tip portion, the male die or the tool base body is formed of a rigid material, Further, a female die having an inner surface that approximately corresponds to the outer shape of the polishing action portion of the tool is formed of a non-metallic material,
Put the superabrasive powder in the female mold, and let the tool base enter into this female mold to push the superabrasive powder to make it flow and reach the periphery of the polishing area. By subjecting the superabrasive grain powder to a thermodynamically stable pressure-temperature condition to achieve sintering between the superabrasive grains and bonding with the tool substrate.

【0008】上記研摩作用部は実質的に半球状、円錐
状、角錐状、テーパー付き円筒状、またはこれらの変
形、あるいはこれらの組合せとして構成することができ
る。
The polishing portion can be configured as a substantially hemispherical shape, a conical shape, a pyramidal shape, a tapered cylindrical shape, or a modification thereof, or a combination thereof.

【0009】上記超砥粒層と工具基体との間には、チタ
ンやタンタルのような高融点金属の箔を配置し、焼結工
程中に炭化物を形成させて中間層として超砥粒と工具基
体との接合力向上に寄与させることができる。
A foil of a refractory metal such as titanium or tantalum is placed between the superabrasive grain layer and the tool base, and carbide is formed during the sintering process to form an intermediate layer of the superabrasive grain and the tool. It is possible to contribute to the improvement of the bonding force with the substrate.

【0010】雌形ブロックの材料としては圧力伝達性、
成形性等の点で食塩(NaCl)が優れているが、この
外にもAl、MgO、ZrOなどの酸化物、T
iC、SiC、BC、ZrCなどの炭化物、TiN、
TaN、Si、BN、AlNなどの窒化物の粉末
成型品または焼結品が利用できる。
The material of the female block is pressure transmissive,
Salt (NaCl) is excellent in terms of formability, but in addition to this, oxides such as Al 2 O 3 , MgO, and ZrO 2 , T
Carbides such as iC, SiC, B 4 C and ZrC, TiN,
A powder molded product or a sintered product of a nitride such as TaN, Si 3 N 4 , BN, or AlN can be used.

【0011】上記焼結助剤としてはCo、Ni、その他
の鉄族金属またはこれらをベースとする合金が使用でき
る。これは粉体として超砥粒粉体に予め混合しておいた
り、箔としてまたは蒸着・メッキにより、雌型内面に配
置乃至被覆して使用することができる。
As the above-mentioned sintering aid, Co, Ni, other iron group metals or alloys based on them can be used. This can be used as a powder, which has been mixed in advance with the superabrasive powder, or can be used as a foil or by deposition or plating on the inner surface of the female mold.

【0012】上記工具基体を超硬で形成作成する場合に
は、鉄族金属をベースとする融液が工具基体材内に発生
し、こゝから供給されるので、この融液を焼結助剤とし
て利用することが可能である。次に本発明を、添付の図
面により説明する。
When the above-mentioned tool base is formed by cemented carbide, since a melt based on an iron group metal is generated in the tool base material and supplied from this, this melt is sintered and assisted. It can be used as an agent. The present invention will now be described with reference to the accompanying drawings.

【0013】図1は、本発明の一実施形である、半球状
研摩作用部を有する工具の作成に利用可能な雄型および
雌型の構成例を示す縦断面図、図2は円錐状研摩作用部
を持つ工具チップ作成用の窪みを複数個有する単一雌
型、図3は四角錐状研摩作用部を持つ工具チップ用の窪
みを有する単位雌型集合体のそれぞれの構成例を示す概
略水平断面図、図4は、図3の型構成において超高圧・
高温処理のための準備が整った型集合体の縦断面図を示
す。
FIG. 1 is a longitudinal sectional view showing an example of the constitution of a male type and a female type which can be used for producing a tool having a hemispherical polishing action portion, which is an embodiment of the present invention, and FIG. 2 is a conical polishing. A single female die having a plurality of depressions for producing a tool tip having an action portion, and FIG. 3 is a schematic view showing an example of respective constitutions of a unit female die assembly having a depression for a tool tip having a quadrangular pyramid polishing action portion. Horizontal sectional view, Fig. 4 shows the ultra high pressure
Figure 3 shows a vertical cross-section of a mold assembly ready for high temperature treatment.

【0014】図1において、全体を1で示す型集合体
は、上方に開放した窪み面2を有する雌型ブロック3
と、雌型ブロック3に隣接して共軸的に配置される筒状
の補助スリーブ4を有する。これらの雌型ブロックおよ
び補助スリーブは共に、上記のようにセラミックスや食
塩等で作成される。窪み面2および補助スリーブ4内
に、これらと共軸的に工具部材基体5が挿入配置され、
成型時に雄型として機能する。
In FIG. 1, a mold assembly, generally designated by 1, is a female mold block 3 having a recessed surface 2 open upward.
And a cylindrical auxiliary sleeve 4 coaxially arranged adjacent to the female block 3. Both the female block and the auxiliary sleeve are made of ceramics, salt or the like as described above. The tool member base body 5 is inserted and arranged coaxially with the recessed surface 2 and the auxiliary sleeve 4,
Functions as a male mold during molding.

【0015】窪み面2は、上記材質の粉末をプレス成型
することにより、あるいは成型されたブロックの機械加
工により、雌型ブロックの表面に、目的とする工具部材
基体5の作用部6の外形に対応する形状に形成し、ある
いはさらに、必要に応じて焼成することにより高強度品
として使用することができる。窪み面2乃至工具作用部
の形状としては、部分球面またはその近似形、円錐また
は角錐、円柱または角柱、あるいはある範囲でこれらを
組合せたものが利用可能である。すなわち、窪み面の底
部に保持された超砥粒が、工具部材基体5が挿入された
時に、これと雌型との間の間隙を流動して基体の上部表
面に到達できるように、対向面のどちらか一方は、急激
な湾入や突起のない、滑らかな表面を呈すべきである。
The recessed surface 2 is formed on the surface of the female mold block by press molding the powder of the above-mentioned material or by machining the molded block, and the outer shape of the working portion 6 of the target tool member base 5. It can be used as a high-strength product by forming it into a corresponding shape, or by baking it if necessary. As the shape of the recessed surface 2 to the tool acting portion, a partial spherical surface or its approximate shape, a cone or a pyramid, a cylinder or a prism, or a combination thereof in a certain range can be used. That is, when the tool member base body 5 is inserted, the superabrasive grains held at the bottom of the recessed surface flow in the gap between the tool member base body 5 and the female die to reach the upper surface of the base body. One of the two should exhibit a smooth surface without sharp ridges or protrusions.

【0016】窪み面および基体の最大水平断面が、利用
可能な加圧断面に比べて充分に小さい場合には、雌型に
複数個の窪みを設けて、同時に高圧高温処理を行うこと
ができる。これは、複数個の窪みを形成した単一の雌型
ブロック、あるいは1〜少数個の窪みを有する単位雌型
ブロックの集合体を使用することによって、達成でき
る。
If the depression surface and the maximum horizontal cross section of the substrate are sufficiently small compared to the available pressure cross section, the female mold can be provided with a plurality of depressions for simultaneous high pressure and high temperature treatment. This can be accomplished by using a single female block with multiple depressions or a collection of unit female blocks with one to a few depressions.

【0017】図2は、単一の雌型ブロックに複数個の工
具部材を作成するための構成例を示す。一体として成型
された円柱状の雌型ブロック7には、中心、および同一
円周上に等間隔で、合計7個の円錐状窪み8が設けられ
ている。これらの窪みは全てを同一形状とする必要はな
く、加圧時のストロークの大きさが本質的に同一であれ
ば、異なる形状の窪みを同一の雌型ブロックに設けるこ
とができる。
FIG. 2 shows an example of the construction for producing a plurality of tool members on a single female block. The cylindrical female block 7 formed as one piece is provided with a total of seven conical recesses 8 at equal intervals on the center and the same circumference. It is not necessary for all of these depressions to have the same shape, and as long as the stroke size during pressurization is essentially the same, depressions of different shapes can be provided in the same female block.

【0018】図3には、同一形状の単位雌型ブロックの
集合体による、複数個の工具部材を作成するための構成
例を示す。各々1個の四角錐形の窪み(その一つを代表
として9で示す)を有する12個の単位雌型ブロック
(代表を10で示す)を点対称に並べ、周囲にスペーサ
11a〜11hを配置することにより、全体を円柱状に
構成する。この場合単位雌型ブロック9の窪みは必ずし
も1個とする必要はなく、例えば図示したブロック2個
分を一体化し、窪みを2個有する長方形のブロックとし
て、6個使用してもよい。また単位雌型ブロック9およ
び補助スリーブ12(図4)は、上記の正方形や長方
形、あるいは正六角形、正三角形、扇形、台形等の水平
断面に形成し、互いに隣接して密に配置できるようにす
るのがよい。
FIG. 3 shows an example of a structure for producing a plurality of tool members by an assembly of unit female blocks having the same shape. Twelve unit female blocks (representatively represented by 10) each having one quadrangular pyramid-shaped depression (one of which is representatively represented by 9) are arranged in point symmetry, and spacers 11a to 11h are arranged in the periphery. By doing so, the whole is formed in a cylindrical shape. In this case, the number of depressions of the unit female block 9 is not necessarily one, and for example, two illustrated blocks may be integrated and six rectangular blocks having two depressions may be used. Further, the unit female block 9 and the auxiliary sleeve 12 (FIG. 4) are formed in a horizontal cross section such as the above-mentioned square or rectangle, or a regular hexagon, a regular triangle, a fan, a trapezoid, etc., so that they can be densely arranged adjacent to each other. Good to do.

【0019】特に図1に示したように、窪み面を合致す
る形状の金属層13で被覆すると、特に焼結層の汚染防
止などに有効である。このような被覆法としてはTa、
Tiなどの高融点(遷移)金属、Co、Ni等の鉄族金
属の箔を窪みの表面に合わせて形成して挿入配置した
り、あるいは蒸着・メッキ等の方法によることができ
る。
In particular, as shown in FIG. 1, it is particularly effective to prevent the contamination of the sintered layer by covering the concave surface with the metal layer 13 having a matching shape. As such a coating method, Ta,
A foil of a high melting point (transition) metal such as Ti or an iron group metal such as Co or Ni may be formed so as to be aligned with the surface of the depression and inserted, or may be deposited or plated.

【0020】工具基体5の、超砥粒が固着される部分の
表面に1乃至複数個の線状凹凸、特に溝14を設け、接
合面積を増大させると同時に表面形状の複雑さを増すこ
とにより、超砥粒層の機械的保持性を向上させることが
できる。これは軸に対して垂直な、または傾斜した線状
溝として形成するのが便利である。点状または面状の凹
凸によっても、類似の効果を達成できる。
By providing one or a plurality of linear irregularities, particularly grooves 14, on the surface of the part of the tool base 5 to which the superabrasive grains are fixed, the joint area is increased and at the same time the surface shape is complicated. The mechanical retention of the superabrasive layer can be improved. It is conveniently formed as a linear groove perpendicular to the axis or inclined. A similar effect can be achieved by using dot-shaped or surface-shaped irregularities.

【0021】以上のように構成された一組の雌型ブロッ
ク3,7または単位雌型ブロック10の集合体の上に、
それぞれの窪み面に適合された貫通孔を有する補助スリ
ーブ4または単位補助スリーブ集合体12を載せ、工具
基体5,15を挿入し、先端の研摩作用部6に超砥粒を
付着させる。複数の工具部材を同時に形成する場合には
特に、加圧が均等化するように、工具基体の上に超硬合
金のような剛性材の円板16を置き、全体をTaのよう
な高融点金属箔製容器17に入れる。
On the assembly of the set of female blocks 3 and 7 or unit female block 10 configured as described above,
An auxiliary sleeve 4 or unit auxiliary sleeve assembly 12 having through holes adapted to the respective concave surfaces is placed, tool bases 5 and 15 are inserted, and superabrasive grains are attached to the polishing action portion 6 at the tip. Especially when a plurality of tool members are formed at the same time, a disc 16 made of a rigid material such as cemented carbide is placed on the tool base so as to equalize the pressurization, and the whole is made of a high melting point material such as Ta. Place in a metal foil container 17.

【0022】全体を公知の一軸加圧式超高圧高温装置に
装填し、超砥粒材が熱力学的に安定な圧力温度条件に供
する。超砥粒粒子間の直接結合は、主としてCoなどの
鉄族金属の融液の媒介によって生じるが、これは、工具
基体を充分な高温に加熱し、これを構成する超硬合金か
らの供給させるか、あるいは超砥粒粉末に予め適量混合
した焼結助剤の作用によることができる。
The whole is loaded into a known uniaxial pressurizing ultrahigh pressure and high temperature apparatus, and the superabrasive material is subjected to thermodynamically stable pressure and temperature conditions. The direct bond between the superabrasive particles is mainly caused by the melt medium of the iron group metal such as Co, which heats the tool substrate to a sufficiently high temperature and causes it to be supplied from the cemented carbide that constitutes it. Alternatively, it may be based on the action of a sintering aid premixed with the superabrasive powder.

【0023】[0023]

【実施例1】 先端に半球形の研摩作用部を有する工具
部材を作成した。食塩のプレス成型により、工具部材先
端に対応して、10mmφの半球形およびこれに接続す
る長さ4mmの円筒状部分から成る窪みを有する雌型ブ
ロックを作成し、窪みの表面に、Ta箔で形成した半球
体を密着して敷き、中に5−12μmのダイヤモンド粉
末2gを入れた。雌型ブロックの上に、雄型ガイドとし
て食塩製の補助スリーブを載せ、この中心に、雄型乃至
工具部材基体として、先端に直径6mmの半球状外面を
有する長さ30mmのWC−13%Co製の棒を、ゆっ
くりと挿入した。この基体には円筒状部分および半球形
部分に各1本ずつ、深さ0.5mm、幅1mmのリング
状溝を設けておいた。
Example 1 A tool member having a hemispherical polishing action portion at its tip was prepared. By press-molding salt, a female block having a 10 mm hemispherical shape and a hollow portion consisting of a cylindrical portion with a length of 4 mm connected to this was made corresponding to the tip of the tool member, and Ta foil was formed on the surface of the hollow with Ta foil. The formed hemispheres were laid closely, and 2 g of 5-12 μm diamond powder was put therein. An auxiliary sleeve made of salt is placed on the female block as a male guide, and a male or tool member base body is provided in the center of this with a 30 mm long WC-13% Co having a 6 mm diameter hemispherical outer surface at the tip. The stick made was slowly inserted. The substrate was provided with a ring-shaped groove having a depth of 0.5 mm and a width of 1 mm, one for each of the cylindrical portion and the hemispherical portion.

【0024】全体を一軸加圧方式の超高圧装置に装填
し、6GPa、1350℃の圧力温度条件に5分間供し
た。全体を超高圧装置から取り出し、型を壊し、焼結さ
れた工具基体焼結品の表面を研摩加工して、研摩工具部
材を得た。
The whole was loaded into a uniaxial pressure type ultra-high pressure apparatus and subjected to a pressure temperature condition of 6 GPa and 1350 ° C. for 5 minutes. The whole was taken out of the ultra-high pressure apparatus, the mold was broken, and the surface of the sintered tool base sintered product was subjected to polishing to obtain an abrasive tool member.

【0025】[0025]

【実施例2】 先端に円錐形の研摩作用部を有する複数
個のチップを作成した。雌型ブロックとして食塩の型成
型により、直径64mm、厚さ13mmの円板を作成
し、中心およびその周囲に均等に6個、それぞれ深さ
8.8mm、12.5mmφの円錐部およびこれに接続
する同一径、深さ2mmの円筒状部分を有する窪みを配
置した。各窪みにTa箔で作成したほぼ同一形状の円錐
板をかぶせ、3−8μmのダイヤモンド粉末を充填し
た。この上にムライト製の円板を置き、窪みと対応する
位置に設けた直径12.55mmの孔を窪みと合わせ、
補助スリーブ集合体とした。先端を円錐形に加工した直
径12.5mmの超硬合金の軸を各孔を介して挿入し、
超硬合金の円板を載せて、全体を超高圧装置に装填し、
上記実施例と同様の圧力温度条件下に10分間供した。
Example 2 A plurality of chips having a conical polishing action portion at the tip were prepared. A circular plate with a diameter of 64 mm and a thickness of 13 mm was created by molding a salt mold as a female mold block, and six discs were evenly distributed around the center and its periphery, and a conical portion with a depth of 8.8 mm and 12.5 mmφ was connected to it. A hollow having a cylindrical portion having the same diameter and a depth of 2 mm was arranged. Each concavity was covered with a conical plate made of Ta foil having substantially the same shape, and was filled with 3-8 μm diamond powder. A mullite disc was placed on top of this, and holes with a diameter of 12.55 mm provided at positions corresponding to the depressions were aligned with the depressions.
An auxiliary sleeve assembly was used. Insert a 12.5 mm diameter cemented carbide shaft with a conical tip into each hole,
Place a disc of cemented carbide and load the whole into a super high pressure device,
It was subjected to 10 minutes under the same pressure and temperature conditions as in the above example.

【0026】[0026]

【実施例3】 先端に四角錐形の研摩作用部を有する複
数個のチップを作成した。単位雌型ブロックとして、ア
ルミナ粉末の成型焼成により一辺が8mmの正方形断面
を持つ高さ8mmの四角柱を作成した。それぞれには予
め一辺が6mm、深さ5mmの角錐部およびこれに接続
する同一水平断面、深さ1mmの正方形開口を有する窪
みを設けておいた。
Example 3 A plurality of chips having a quadrangular pyramid-shaped polishing action portion at the tip were prepared. As a unit female block, a quadrangular prism with a height of 8 mm having a square cross section with one side of 8 mm was created by molding and firing alumina powder. Each of them was previously provided with a pyramid portion having a side of 6 mm and a depth of 5 mm and a recess having a square opening having the same horizontal cross section and a depth of 1 mm connected to the pyramid portion.

【0027】12個の単位ブロックを(点対称に)相互
に隣接配置し、各窪み面に1/2−1μmのダイヤモン
ド微粉末を入れて、正方形開口を有する正方形板を位置
合わせしてかぶせた。周囲にアルミナ製のスペーサを配
置することにより全体を円筒状に構成し、Ta箔の容器
に入れて固定した。各開口に一辺が6mmの四角錐状先
端を有する持つ四角柱状の超硬合金棒を挿入し、これら
の上に超硬合金の円板を載せてTa容器を封じ、上記各
実施例と同一の装置に装填して、超高圧・高温条件下に
供した。
Twelve unit blocks were arranged adjacent to each other (in point symmetry), 1 / 2-1 μm diamond fine powder was put in each recessed surface, and a square plate having square openings was aligned and covered. . Alumina spacers were arranged in the periphery to form a cylindrical shape, which was placed in a Ta foil container and fixed. A quadrangular prismatic cemented carbide rod having a quadrangular pyramid-shaped tip with a side of 6 mm was inserted into each opening, a disc of cemented carbide was placed on the rods, and the Ta container was sealed. It was loaded into the apparatus and subjected to ultra high pressure and high temperature conditions.

【0028】[0028]

【発明の効果】 上に詳述したように、 本発明においては、ダイヤモンド等の超砥粒粉末自
体の焼結および基体との接合に同時焼結法が用いられて
いることにより、基体と焼結超砥粒層との接合強度が大
きく、衝撃が加わる用途にも耐える、耐久性の大きな工
具が得られる。主な用途としては、各種のビット類が挙
げられる。
As described above in detail, in the present invention, the simultaneous sintering method is used for sintering the superabrasive grain powder itself such as diamond and for joining it to the substrate, so that It is possible to obtain a highly durable tool that has a large bonding strength with the super-abrasive grain layer and can withstand an application to which a shock is applied. Main applications include various bits.

【0029】 複数の窪みを有する雌型ブロックにお
いては、各窪みの形状は必ずしも同一でなくてもよい。
したがって先端形状の異なる工具を、同一の超高圧処理
で製作することが可能である。この点において、本発明
方法は多種少量生産にも適用できる。
In a female block having a plurality of depressions, the shapes of the depressions do not necessarily have to be the same.
Therefore, it is possible to manufacture tools having different tip shapes by the same ultrahigh pressure processing. In this respect, the method of the present invention can also be applied to various types of small-quantity production.

【0030】 焼結時のストロークを小さくすること
ができ、原料のダイヤモンド等の使用量も少なくて済む
ので、超高圧反応が容易で、また焼結コストの大幅な低
減が可能である。
Since the stroke during sintering can be shortened and the amount of raw material diamond or the like used can be small, the ultrahigh pressure reaction is easy and the sintering cost can be greatly reduced.

【0031】 薄い超砥粒層を用いることにより、焼
結が容易かつ確実に行える。また研摩作用部の表面はほ
ゞ最終形状に形成されるので、後加工の工程が簡略化さ
れ、後加工で除去するダイヤモンド等の量が大幅に減少
し、この点において材料費、加工費の低減となる。
By using a thin superabrasive layer, sintering can be performed easily and reliably. Also, since the surface of the polishing action part is formed in almost the final shape, the post-processing step is simplified and the amount of diamond etc. removed in the post-processing is greatly reduced. It will be reduced.

【0032】なお上記の説明は専ら超砥粒としてダイヤ
モンドを用いた場合について説明したが、この説明は、
同様に鉄族金属の媒介により焼結が可能な別の超砥粒、
特に立方晶窒化硼素(c−BN)に対しても本質的な部
分において同様に適用されることが理解されよう。
Although the above explanation has been made exclusively with respect to the case where diamond is used as the superabrasive grain, this explanation is as follows.
Similarly, another super-abrasive grain that can be sintered by mediating iron group metal,
It will be understood that the same applies in essence to cubic boron nitride (c-BN) in particular.

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

【図1】 本発明の実施に用い得る半球状の研摩作用部
を有する研摩工具の雄型および雌型の構成例を示す概略
断面図。
FIG. 1 is a schematic cross-sectional view showing a configuration example of a male mold and a female mold of a polishing tool having a hemispherical polishing action portion that can be used for carrying out the present invention.

【図2】 円錐状研摩作用部を持つ工具チップ作成用の
窪みを複数個有する単一雌型の構成例を示す概略水平断
面図。
FIG. 2 is a schematic horizontal cross-sectional view showing a configuration example of a single female die having a plurality of depressions for forming a tool tip having a conical polishing action portion.

【図3】 四角錐状研摩作用部を持つ工具チップ用の窪
み有する単位雌型集合体の構成例を示す概略水平断面
図。
FIG. 3 is a schematic horizontal cross-sectional view showing a configuration example of a unit female type aggregate having a recess for a tool tip having a quadrangular pyramid-shaped polishing action portion.

【図4】 図3の型構成において超高圧・高温処理のた
めの準備が整った型集合体のA−Aにおける縦断面図。
FIG. 4 is a vertical cross-sectional view taken along the line AA of the mold assembly that is ready for ultra-high pressure / high temperature processing in the mold configuration of FIG.

【符号の説明】[Explanation of symbols]

1 型集合体 2 窪み面(半球状) 3 雌型ブロック 4 補助スリーブ 5 工具部材基体 6 作用部 7 雌型ブロック 8 窪み面(円錐状) 9 窪み面(四角錐形) 10 単位雌型ブロック 11 スペーサ 12 単位補助スリーブ 13 金属層 14 溝 15 工具基体 16 剛性材円板 17 高融点金属容器 1 type aggregate 2 hollow surface (hemispherical) 3 female block 4 auxiliary sleeve 5 tool member base 6 working portion 7 female block 8 hollow surface (conical) 9 hollow surface (quadrangular pyramid) 10 unit female block 11 Spacer 12 Unit auxiliary sleeve 13 Metal layer 14 Groove 15 Tool base 16 Rigid disc 17 High melting point metal container

Claims (12)

【特許請求の範囲】[Claims] 【請求項1】 相互に直接結合した超砥粒粒子およびこ
の粒子間隙に存在する微小量の金属相を有する焼結超砥
粒層が、この金属相と実質的に同種の金属相を介して、
工具基体の立体的構成を有する研摩作用部表面に固着さ
れていることを特徴とする研摩工具部材。
1. A sintered superabrasive grain layer having superabrasive grains directly bonded to each other and a minute amount of a metal phase present in the interstices between the grains, through a metal phase substantially the same as this metal phase. ,
An abrasive tool member characterized by being fixed to a surface of an abrasive action portion having a three-dimensional structure of a tool base.
【請求項2】 上記研摩作用部が実質的に半球状、円筒
状、円錐状または角錐状、あるいはこれらの組合わせを
呈する、請求項1に記載の研摩工具部材。
2. The polishing tool member according to claim 1, wherein the polishing portion has a substantially hemispherical shape, a cylindrical shape, a conical shape, a pyramidal shape, or a combination thereof.
【請求項3】 上記超砥粒層と工具基体との間に、少な
くとも表層部に化合物を形成した遷移金属および/また
は鉄族金属の層が介在する、請求項1に記載の研摩工具
部材。
3. The polishing tool member according to claim 1, wherein a layer of a transition metal and / or an iron group metal having a compound formed on at least the surface layer portion is interposed between the superabrasive grain layer and the tool substrate.
【請求項4】 全体的に軸状を呈しかつ先端部に立体的
構成の研摩作用部を有する研摩工具チップの製法におい
て、雄型乃至工具基体を剛性材で形成し、また 工具の研摩作用部の外形に近似的に対応する内面を有
する雌型を非金属質材料で形成し、雌型に超砥粒粉体
を入れ、この雌型に工具基体を進入させて超砥粒粉体
を押すことにより流動させて研摩作用部の周囲に到達せ
しめ、焼結助剤金属の存在下で超砥粒粉体を熱力学的
に安定な圧力温度条件下に供することにより、超砥粒相
互間の焼結および工具基体との接合を達成することを特
徴とする、研摩工具部材の製法。
4. A method of manufacturing an abrasive tool tip having a generally axial shape and having a three-dimensionally structured abrasive action portion at a tip thereof, wherein a male or tool base is formed of a rigid material, and the abrasive action portion of the tool is formed. Forming a female die with an inner surface that approximately corresponds to the outer shape of the non-metallic material, inserting the superabrasive powder into the female die, and inserting the tool base into this female die to push the superabrasive powder. To flow around the polishing action part, and subject the superabrasive grain powder to the thermodynamically stable pressure-temperature condition in the presence of the sintering aid metal, thereby A method of making an abrasive tool member, characterized by achieving sintering and bonding with a tool substrate.
【請求項5】 上記焼結助剤がCoまたはNiの粉体と
して超砥粒粉体に予め混合される、請求項4に記載の研
摩工具部材の製法。
5. The method for manufacturing an abrasive tool member according to claim 4, wherein the sintering aid is premixed with the superabrasive powder as Co or Ni powder.
【請求項6】 上記焼結助剤を雌型内面に予め被覆して
なる、請求項4に記載の研摩工具チップの製法。
6. The method for producing an abrasive tool tip according to claim 4, wherein the inner surface of the female die is coated with the sintering aid in advance.
【請求項7】 上記工具基体を超硬合金で構成し、焼結
助剤がこの超硬合金から融液として供給される、請求項
4に記載の研摩工具部材の製法。
7. The method for manufacturing an abrasive tool member according to claim 4, wherein the tool base is made of cemented carbide, and the sintering aid is supplied as a melt from the cemented carbide.
【請求項8】 上記雌型内面が遷移金属で予め被覆され
ている、請求項4に記載の研摩工具部材の製法。
8. The method for manufacturing an abrasive tool member according to claim 4, wherein the inner surface of the female die is previously coated with a transition metal.
【請求項9】 上記非金属材料が金属酸化物、窒化物、
炭化物、および食塩から選ばれる、請求項4に記載の研
摩工具部材の製法。
9. The non-metallic material is a metal oxide, a nitride,
The method for manufacturing an abrasive tool member according to claim 4, which is selected from carbides and salt.
【請求項10】 上記雌型の内面に接して高融点金属
箔、または鉄族金属箔を配置する、請求項4に記載の研
摩工具部材の製法。
10. The method of manufacturing an abrasive tool member according to claim 4, wherein a refractory metal foil or an iron group metal foil is placed in contact with the inner surface of the female mold.
【請求項11】 上記雌型の表面に高融点金属、または
鉄族金属を冶金学的に付着させた、請求項4に記載の研
摩工具部材の製法。
11. The method for manufacturing an abrasive tool member according to claim 4, wherein a refractory metal or an iron group metal is metallurgically adhered to the surface of the female mold.
【請求項12】 上記雄型の表面に溝付けまたは階段状
加工により、表面積を増した、請求項4に記載の研摩工
具部材の製法。
12. The method for producing an abrasive tool member according to claim 4, wherein the surface of the male mold is increased by grooving or stepwise processing.
JP13624894A 1994-05-14 1994-05-14 Polishing tool member with stereoscopic working section and manufacture thereof Pending JPH07308860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13624894A JPH07308860A (en) 1994-05-14 1994-05-14 Polishing tool member with stereoscopic working section and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13624894A JPH07308860A (en) 1994-05-14 1994-05-14 Polishing tool member with stereoscopic working section and manufacture thereof

Publications (1)

Publication Number Publication Date
JPH07308860A true JPH07308860A (en) 1995-11-28

Family

ID=15170754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13624894A Pending JPH07308860A (en) 1994-05-14 1994-05-14 Polishing tool member with stereoscopic working section and manufacture thereof

Country Status (1)

Country Link
JP (1) JPH07308860A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012218125A (en) * 2011-04-12 2012-11-12 Olympus Corp Lens polishing dish manufacturing system and manufacturing method
JP2015527484A (en) * 2012-06-20 2015-09-17 エレメント シックス アブレイシヴズ ソシエテ アノニム Cutting insert and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012218125A (en) * 2011-04-12 2012-11-12 Olympus Corp Lens polishing dish manufacturing system and manufacturing method
JP2015527484A (en) * 2012-06-20 2015-09-17 エレメント シックス アブレイシヴズ ソシエテ アノニム Cutting insert and manufacturing method thereof

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