JPS6048207A - Ultra-hard drill and its manufacture - Google Patents
Ultra-hard drill and its manufactureInfo
- Publication number
- JPS6048207A JPS6048207A JP15552683A JP15552683A JPS6048207A JP S6048207 A JPS6048207 A JP S6048207A JP 15552683 A JP15552683 A JP 15552683A JP 15552683 A JP15552683 A JP 15552683A JP S6048207 A JPS6048207 A JP S6048207A
- Authority
- JP
- Japan
- Prior art keywords
- cemented carbide
- drill
- carbide
- outer peripheral
- ultra
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
Abstract
Description
【発明の詳細な説明】
この発明は、超硬ドリルおよびそれを製造するのに好適
な製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a carbide drill and a manufacturing method suitable for manufacturing the same.
一般に、超硬ドリルにおいては、切刃を高速変調より硬
度が高い超硬合金によって構成しているから、高速度鋼
製ドリルに比して高速切削を行うことができ、これによ
って加工能率の向上を図ることができるという利点が得
られる。In general, carbide drills have cutting edges made of cemented carbide, which is harder than high-speed modulation, so they can cut at higher speeds than high-speed steel drills, which improves machining efficiency. This has the advantage of being able to achieve
しかしながら、送り速彦については向上させることがで
きなかった。これは、超硬合金が硬い反面脆いため、ド
リル先端の軸線近傍部分がそこに作用するスラスト荷重
によって圧壊するおそれがあるからであり、高送りしよ
うとするとそれに伴なってスラスト荷重が増大し、より
一層圧壊の危険性が増大することになる。したがって、
この種の超硬ドリルにおいては、穴明は加工の能率向上
を図るにも一定の限度があり、また寿命の点でも充分に
満足し得るものとはいい難かった。However, the feed speed could not be improved. This is because while cemented carbide is hard, it is also brittle, so there is a risk that the part near the axis of the drill tip will be crushed by the thrust load acting there.If you try to use a high feed rate, the thrust load will increase accordingly. This will further increase the risk of crushing. therefore,
In this type of carbide drill, there is a certain limit to the ability to drill holes in order to improve machining efficiency, and it is difficult to say that the drill is fully satisfactory in terms of service life.
そこで、軸線近傍部分の圧壊の危険性を軽減するため、
より靭性に富む超硬合金を用いて超硬ドリルを製造する
ことが考えられる。ところがこのようにすると、送り速
度を向上させることができる反面、靭性に富む超硬合金
は硬度が低いため、切削速度の低下を余義なくされ、し
たがって根本的な解決策とはいえかかった。Therefore, in order to reduce the risk of crushing near the axis,
It is conceivable to manufacture a cemented carbide drill using a cemented carbide that has higher toughness. However, while this method could increase the feed rate, since the hardness of cemented carbide, which is rich in toughness, is low, the cutting speed had to be reduced, so it was not a fundamental solution.
この発明は、上記事情を考慮してなされたもので、高速
切削を行うことができるのは勿論のこと、高送り切削を
行うことができ、したがって穴明は加工の能率を大幅に
向上させることができ、しかも寿命の向上を図ることが
できる超硬ドリルを提供することおよびそのような超硬
ドリルを製造するのに好適な製造方法を提供することを
目的とする。This invention was made in consideration of the above circumstances, and it is possible not only to perform high-speed cutting but also to perform high-feed cutting, which greatly improves the efficiency of drilling. It is an object of the present invention to provide a carbide drill that can improve the lifespan of the carbide drill, and to provide a manufacturing method suitable for manufacturing such a carbide drill.
以下、この発明について詳細に説明する。This invention will be explained in detail below.
まず、この発明の超硬ト°リルについて第１図ないし第
７図を参照して説明する。第１図ないし第３図はこの発
明の一実施例を示すもので、これらの図に示すように、
この発明は超硬合金製のドリル本体１を２層ｗｌ造とし
た点に特徴がある。すなわち、ドリル本体１はその軸線
０を含む中心部１ａと、この中心部１ａの外側に設けら
れた外周部１ｂとから構成されている。中心部１ａは、
外周部１ｂを構成する超硬合金より靭性が高い超硬合金
によって構成され、他方外周部１ｂは、中心部１＆を構
成する超硬合金より硬度が高い超硬合金によって構成さ
れている。中心部１ａ、外周部１ｂを構成する超硬合金
としては、炭化タングステン（ＷＣ）または炭化チタン
（Ｔｌ ′Ｃ）を主成分とする超ｈφ合金を用いるのが
望ましい。なお、ドリルの外径をＤとしたとき、中心部
１−の直径ｄとしては、Ｄ／１５≦ ｄ ≦ Ｄ／１５
−とするのが望ましい。First, the carbide drill of the present invention will be explained with reference to FIGS. 1 to 7. Figures 1 to 3 show an embodiment of the present invention, and as shown in these figures,
This invention is characterized in that the drill body 1 made of cemented carbide is made of two layers. That is, the drill body 1 is composed of a center portion 1a including the axis 0 thereof, and an outer peripheral portion 1b provided outside the center portion 1a. The center part 1a is
It is made of a cemented carbide that has higher toughness than the cemented carbide that makes up the outer peripheral part 1b, and the outer peripheral part 1b is made of a cemented carbide that has a higher hardness than the cemented carbide that makes up the center part 1&. As the cemented carbide constituting the central portion 1a and the outer peripheral portion 1b, it is desirable to use a super hφ alloy whose main component is tungsten carbide (WC) or titanium carbide (Tl'C). In addition, when the outer diameter of the drill is D, the diameter d of the center part 1- is D/15≦d≦D/15
− is desirable.
また、上記中心部１ａの軸線０に対する位置関係として
は、上記実施例のように中心部１ａの中心線１を軸線０
と一致させてもよく、第４図および第５図に示すように
、中心線１を軸線０からずらし、中心部１ａを偏心させ
て形成してもよい。Further, as for the positional relationship of the center portion 1a with respect to the axis 0, as in the above embodiment, the center line 1 of the center portion 1a is set to the axis 0.
Alternatively, as shown in FIGS. 4 and 5, the center line 1 may be shifted from the axis 0, and the center portion 1a may be eccentrically formed.
また、中心部１ａの断面形状としては、上記実施例のよ
うに、円形として本よいが、第６図および第７図に示す
ように、楕円形としてもよく、その抽圧三角形、正四角
形等の正多角形あるいは他の形状としてもよい。Further, the cross-sectional shape of the center portion 1a is preferably circular as in the above embodiment, but as shown in FIGS. It may be a regular polygon or other shape.
そして、上記のように形成されたト°リル本体１には、
従来のドリルと同様に、外周に切屑排出溝２．２が形成
され、各切屑排出溝２．２の回転方向を向く壁面と先端
逃げ面３とのなす稜に切刃４゜４がそれぞれ形成されて
いる。これら切刃４．４間には、チゼル部５が形成され
ている。このチゼル部５は、シンニングが施さ、れるこ
とにより、中心部１ａにのみ形成されている。なお、こ
の場合にはドリル本体１全体を超硬合金によって形成し
ているが、その先端部のみを超硬合金によって構成して
もよい。たとえばドリル本体を刃部とシヤング部とから
な１７、刃部を上記のような２層構造とする一方、シャ
ンク部を鋼製とし、このシャンク部に刃部をろう付は固
定するようにしてもよい。The trill main body 1 formed as described above has
Similar to conventional drills, chip discharge grooves 2.2 are formed on the outer periphery, and cutting edges 4° 4 are formed on the edges formed by the wall surface facing the rotation direction of each chip discharge groove 2.2 and the tip flank surface 3. has been done. A chisel portion 5 is formed between these cutting edges 4.4. This chisel portion 5 is formed only in the center portion 1a by thinning. In this case, the entire drill body 1 is made of cemented carbide, but only the tip thereof may be made of cemented carbide. For example, the drill body consists of a blade part and a shearing part17, and the blade part has a two-layer structure as described above, while the shank part is made of steel, and the blade part is fixed to this shank part by brazing. Good too.
上記のように構成された超硬ト０リルによって穴明は加
工を行った場合には、ドリル本体１の中心部１ｇを外周
部１ｂより靭性の高い超硬合金によって構成しているか
ら、軸線０近傍部分の圧壊を防止することができ、した
がって、高送り切削を行うことができる。一方、外周部
１ｂを中心部１＆より硬度の高い超硬合金によって構成
したから、切削速変を低下させる必要がない。したがっ
て、穴明加工の能率を大幅に向上させることができろ。When drilling is performed using a carbide drill configured as described above, since the center portion 1g of the drill body 1 is made of a cemented carbide having higher toughness than the outer peripheral portion 1b, the axis It is possible to prevent crushing of the portion near 0, and therefore high feed cutting can be performed. On the other hand, since the outer peripheral part 1b is made of a cemented carbide which is harder than the central part 1, there is no need to reduce the cutting speed change. Therefore, the efficiency of hole drilling can be greatly improved.
また、軸１１ｉｌｏ近傍部分の圧壊を防止することがで
きるから、鍔命の向上を図ることができる。Further, since it is possible to prevent the portion near the shaft 11ilo from being crushed, the life of the collar can be improved.
次に、高速変鋼製ドリル、従来の超硬ドリルおよびこの
発明に係す超硬ドリルによる穴明は加工を行った際の実
験データを示すことにより上記の効果を明らかにする。Next, the above-mentioned effects will be clarified by showing experimental data obtained when drilling holes using a high-speed variable steel drill, a conventional carbide drill, and a carbide drill according to the present invention.
なお、ドリル直径その他の瞳光を王者共同−にしたのは
勿論である。また、被剛材は鋳鉄であり、穴の直径８ｍ
、深さ３Ｑ１１Ｊ！である。実験データは次のとおりで
ある。It goes without saying that the drill diameter and other pupil lights are the same. In addition, the rigid material is cast iron, and the hole diameter is 8 m.
, depth 3Q11J! It is. The experimental data are as follows.
上表から明らかなように、この発明の超硬ドリルによれ
ば、高速度鋼製ドリルおよび従来の超硬ドリルのいずれ
より穴明は加工の能率を向上させることができ、しかも
、従来の超硬ドリルが高速１鋼製ドリルに比して短寿命
であったのに対し、高速度鋼製ドリルよりも長寿命とす
ることができた。As is clear from the table above, the carbide drill of the present invention can improve drilling efficiency compared to both high-speed steel drills and conventional carbide drills. While hard drills had shorter lifespans than high-speed steel drills, this product was able to have a longer lifespan than high-speed steel drills.
次に、上記構成の超硬ドリルを製造するのに好適な製造
方法について説明する。Next, a manufacturing method suitable for manufacturing the cemented carbide drill having the above configuration will be described.
〔第１の製造方法〕
この製造方法においては、第８図に示すように、超硬合
金の圧粉体からなる筒状体１１をまず製造する。この場
合、予め柱状体を圧縮成形し、その柱状体の中心部を繰
り抜いて筒状体１１となしてもよく、圧縮成形によって
筒状体１１そのものを得るようにしてもよい。[First Manufacturing Method] In this manufacturing method, as shown in FIG. 8, a cylindrical body 11 made of a green compact of cemented carbide is first manufactured. In this case, the columnar body may be compression-molded in advance and the center portion of the columnar body may be hollowed out to form the cylindrical body 11, or the cylindrical body 11 itself may be obtained by compression molding.
次に、筒状体１１内に棒状体１２を挿入する。Next, the rod-shaped body 12 is inserted into the cylindrical body 11.
この棒状体１２は筒状体１１を構成する超硬合金より靭
性が高く、かつ焼結時の収縮率が小さい超硬合金を圧縮
成形してなるものである。なお、その外径については、
焼結後における筒状体１１と棒状体１２との収縮量の差
を考慮して決定すべきであるが、一般的には筒状体１１
の内径より０．０１〜Ｑ、 ５１１小さくしておくのが
良い。This rod-shaped body 12 is made by compression molding a cemented carbide that has higher toughness than the cemented carbide forming the cylindrical body 11 and has a smaller shrinkage rate during sintering. Regarding its outer diameter,
It should be determined by considering the difference in the amount of shrinkage between the cylindrical body 11 and the rod-shaped body 12 after sintering, but generally the cylindrical body 11
It is better to make it 0.01~Q,511 smaller than the inner diameter of.
その後、筒状体１１内に棒状体１２を組み込んだ状態で
、それらを焼結する。すると、筒状体１１が棒状体１２
より大きく収縮するため、それらが一体化される。Thereafter, with the rod-shaped body 12 assembled inside the cylindrical body 11, they are sintered. Then, the cylindrical body 11 becomes the rod-shaped body 12
Because they contract more, they become unified.
次いで、第９図に示すように、その焼結体に切屑排出＠
１３、切刃１４等の形状加工を施す。この形状加工につ
いては、焼結する前に行い、その後焼結するようにして
もよい。Next, as shown in Fig. 9, chips are discharged into the sintered body.
13. Shape processing of the cutting edge 14, etc. is performed. This shape processing may be performed before sintering and then sintered.
なお、上記の場合には、筒状体１１を挺なる円筒状とな
しているが、たとえば切屑排出溝１３が形成される部分
に予め凹溝を成形しておいてもよい。In the above case, the cylindrical body 11 is formed into a cylindrical shape, but for example, a groove may be formed in advance in the portion where the chip discharge groove 13 is to be formed.
〔第２の製造方法〕
この第２の製造方法は、棒状体を予め焼結しておく点が
上記第１の製造方法と異なり、その他の工程は第１の製
造方法と同様である。したがって、この場合には棒状体
を構成する超硬合金と筒状体を構成する超硬合金との収
縮率の差を考慮する必要がない。[Second Manufacturing Method] This second manufacturing method differs from the first manufacturing method in that the rod-shaped body is sintered in advance, and the other steps are the same as the first manufacturing method. Therefore, in this case, there is no need to consider the difference in shrinkage rate between the cemented carbide forming the rod-shaped body and the cemented carbide forming the cylindrical body.
この製造方法においては、筒状体内に棒状体を組み込ん
だ状態での焼結時において、棒状体がほとんど収縮しな
いから、筒状体と棒状体とをより一層強固に一体化する
ことができる。また、棒状体を予め焼結しておくから、
製造工程中において棒状体の欠損等の事故を未然に防止
することができ、これによってロス率の低減を図ること
ができる。In this manufacturing method, the rod-shaped body hardly shrinks during sintering with the rod-shaped body incorporated in the cylindrical body, so that the cylindrical body and the rod-shaped body can be more firmly integrated. Also, since the rod-shaped body is sintered in advance,
Accidents such as breakage of rod-shaped bodies during the manufacturing process can be prevented, thereby reducing the loss rate.
〔第３の製造方法〕
この第３の製造方法は、中心部に外周部を構成する超硬
合金より靭性が高く、かつ焼結時の収縮率が小さい超硬
合金を配し、これら中心部と外周部とを同時に圧縮成形
して棒状の圧粉体を製造し、その後との圧粉体を焼結し
、次いで形状加工を行うものである。なお、形状加工工
程と焼結工程とを前後進にしてもよいことは勿論である
。[Third manufacturing method] In this third manufacturing method, a cemented carbide having higher toughness and a smaller shrinkage rate during sintering than the cemented carbide constituting the outer peripheral portion is arranged in the center, and A rod-shaped green compact is manufactured by simultaneously compression molding the green compact and the outer peripheral portion, and then the green compact is sintered and then shaped. In addition, it goes without saying that the shape processing step and the sintering step may be performed in the forward and backward directions.
この第３の製造方法においては、圧縮成形工程および焼
結工程をいずれも一回行えばよいから、上記の２つの製
造方法に比して超硬ドリルを安価に製造することができ
、特に大量生産に好適である。In this third manufacturing method, since both the compression molding process and the sintering process only need to be performed once, carbide drills can be manufactured at a lower cost compared to the above two manufacturing methods, and especially in large quantities. Suitable for production.
以上説明したように、この発明の超硬ト°リルによれば
、ト°リル本体を中心部と外周部とからなる２層構造と
し、中心部を外周部より靭性が高い超硬合金によって構
成する一方、外周部を中心部より硬ばが高い超硬合金に
よって構成しているから、高速切削を行うことができる
のは勿論のこと、高送り穴明は加工を行うことができ、
したがって穴明は加工の能率を大幅に向上させることが
でき、しかも寿命の向上を図ることができる等の効果が
得られる。また、この発明の製造方法によればそのよう
な超硬ドリルを容易に製造することができる。As explained above, according to the carbide drill of the present invention, the drill body has a two-layer structure consisting of a center part and an outer peripheral part, and the center part is made of a cemented carbide having higher toughness than the outer peripheral part. On the other hand, since the outer periphery is made of cemented carbide, which has a higher hardness than the center, it is possible to perform high-speed cutting as well as high-feed drilling.
Therefore, drilling can greatly improve processing efficiency, and also has the effect of increasing service life. Further, according to the manufacturing method of the present invention, such a carbide drill can be easily manufactured.
第１図ないし第３図はこの発明に係る超硬ドリルの一賽
施例を示し、第１図はその正面図、第２図は一部省略側
面図、第３図は第１図のｌ−１１矢視断面図、第４図お
よび第５図はこの発明に係る超硬Ｖリルの他の実施例を
示し、第４図はその正面図、第５図は一部省略側面図、
第６図および第７図はこの発明に係る超硬ドリルのさら
に他の実施例を示し、第６図はその正面図、第７図は一
部省略側面図、第８図および第９図はこの発明の第１の
製造方法を訝明するための図であって、第８図は組み立
て工程を示す斜視図、第９図は形状加工後の超硬ト°リ
ルを示す一部省略側面図である。
１・・・・・・ドリル本体、１＆・・・・・・中心部、
１ｂ・・・・・・外周部、０・・・・・・軸線、Ｊ・・
・・・・中心線、１１・・・・・・筒状体、１２・・・
・・・棒状体。1 to 3 show an embodiment of the carbide drill according to the present invention, FIG. 1 is a front view thereof, FIG. 2 is a partially omitted side view, and FIG. 3 is a lug of FIG. -11 arrow sectional view, FIGS. 4 and 5 show other embodiments of the carbide V-rill according to the present invention, FIG. 4 is a front view thereof, FIG. 5 is a partially omitted side view,
6 and 7 show still another embodiment of the carbide drill according to the present invention, FIG. 6 is a front view thereof, FIG. 7 is a partially omitted side view, and FIGS. 8 and 9 are FIG. 8 is a perspective view showing the assembly process, and FIG. 9 is a partially omitted side view showing the carbide drill after shape processing. It is. 1...Drill body, 1 &... Center part,
1b...outer circumference, 0...axis, J...
... Center line, 11 ... Cylindrical body, 12 ...
...rod-shaped body.
Claims (1)
て構成された超硬ト°リルにおいて、前記超硬合金によ
って構成された部分は、ト°リルの軸線を含む中心部と
、この中心部の外側に設けられた外周部とからなり、前
記中心部は前記外周部より靭性が高い超硬合金によって
構成され。 前記外周部は前記中心部より硬度が高い超硬合金によっ
て構成されていることを特徴とする超硬ト°リル。 ２、前記中心部および前記外周部はそれぞれ炭化タング
ステンまたは炭化チタンを主成分とする超硬合金によっ
て構成されていることを特徴とする特許請求の範囲第１
項に記載の超硬ドリル。 ３、前記中心部は、その中心線が前記ドリルの軸線から
ずらされていることを特徴とする特許請求の範囲第１項
を元は第２項に記載の超硬ト９リル。 ４、前記中心部は、その断面形状が円形または楕円形ま
たは正多角形とされてい石ことを特徴とする特許請求の
範囲第１項ないし第３項のいずれかに記載の超硬ドリル
。 ５、超硬合金の圧粉体である筒状体に、この筒状体を構
成する超硬合金より靭性が高く、かつ焼結時の収縮基が
小さい超硬合金を圧縮成形してなる棒状体を挿入してこ
れらを組み立て、その後組み立てられた筒状体および棒
状体の形状加工と焼結とのいずれか一方を行い、次いで
他方を行うことを特徴とする超硬ト°リルの製造方法。 ６、超硬合金の圧粉体である筒状体に、この筒状体を構
成する超硬合金よりも靭性が高い超硬合金を圧縮成形後
焼結してなる棒状体を挿入してこれらを組み立て、その
後組み立てられた筒状体および棒状体の形状加工と焼結
とのいずれか一方を行い１次いで他方を行うことを特徴
とする超硬ト°リルの製造方法。 ７、中心部に外周部を構成する超硬合金より靭性が高く
、かつ焼結時の収縮率が小さい超硬合金を配し、これら
中心部と外周部とを同時に圧縮成形して棒状の圧粉体と
なし、その後圧粉体の形状加工と焼結とのいずれか一方
を行い、次いで他方を行うことを特徴とする超硬ドリル
の製造方法。[Claims] 1. In a cemented carbide drill in which at least the tip of the drill body is made of cemented carbide, the portion made of cemented carbide is connected to a central portion including the axis of the drill. , and an outer peripheral part provided outside the central part, and the central part is made of a cemented carbide having higher toughness than the outer peripheral part. The cemented carbide drill is characterized in that the outer peripheral portion is made of a cemented carbide whose hardness is higher than that of the central portion. 2. The first aspect of the present invention is characterized in that the center portion and the outer peripheral portion are each made of a cemented carbide whose main component is tungsten carbide or titanium carbide.
The carbide drill described in section. 3. The carbide drill according to claim 1, wherein the center line of the center portion is offset from the axis of the drill. 4. The carbide drill according to any one of claims 1 to 3, wherein the central portion has a cross-sectional shape of a circle, an ellipse, or a regular polygon. 5. A rod shape made by compression molding a cemented carbide that has higher toughness than the cemented carbide that makes up the cylindrical body and has a smaller shrinkage group during sintering into a cylindrical body that is a compacted powder of cemented carbide. A method for manufacturing a carbide drill, which comprises inserting bodies and assembling them, and then performing either one of shape processing and sintering of the assembled cylindrical body and rod body, and then performing the other. . 6. A rod-shaped body made by compressing and sintering cemented carbide, which has higher toughness than the cemented carbide constituting the cylindrical body, is inserted into a cylindrical body that is a compacted cemented carbide powder. 1. A method for manufacturing a carbide drill, comprising: assembling the assembled cylindrical body and rod-like body, and then performing either one of shape processing and sintering of the assembled cylindrical body and rod-shaped body, and then performing the other. 7. Cemented carbide, which has higher toughness than the cemented carbide that makes up the outer periphery and has a smaller shrinkage rate during sintering, is placed in the center, and the center and outer periphery are simultaneously compression molded to form a rod-shaped compact. 1. A method for manufacturing a carbide drill, which comprises: forming a powder into powder, then performing either one of shape processing and sintering of the green compact, and then performing the other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15552683A JPS6048207A (en) | 1983-08-25 | 1983-08-25 | Ultra-hard drill and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15552683A JPS6048207A (en) | 1983-08-25 | 1983-08-25 | Ultra-hard drill and its manufacture |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16940786A Division JPS6234710A (en) | 1986-07-18 | 1986-07-18 | Cemented carbide drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6048207A true JPS6048207A (en) | 1985-03-15 |
| JPS6157123B2 JPS6157123B2 (en) | 1986-12-05 |
Family
ID=15607992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15552683A Granted JPS6048207A (en) | 1983-08-25 | 1983-08-25 | Ultra-hard drill and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048207A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62218010A (en) * | 1986-03-19 | 1987-09-25 | Mitsubishi Metal Corp | Carbide drill |
| US4826368A (en) * | 1986-06-07 | 1989-05-02 | Hertel Ag Werkzeuge & Hartstoffe | Twist drill |
| JPH02503074A (en) * | 1987-04-10 | 1990-09-27 | エケロット，スベン | Drill |
| JP2006512211A (en) * | 2003-01-02 | 2006-04-13 | フリードリヒス アルノ | Method and apparatus for making carbide tools |
| US20080298918A1 (en) * | 2007-05-29 | 2008-12-04 | Sandvik Intellectual Property Ab | Drill body for chip removing machining |
| US20100290849A1 (en) * | 2009-05-12 | 2010-11-18 | Tdy Industries, Inc. | Composite cemented carbide rotary cutting tools and rotary cutting tool blanks |
| JP4912552B2 (en) * | 1999-12-14 | 2012-04-11 | ティーディーワイ・インダストリーズ・インコーポレーテッド | Compound rotary cutting tool |
| US8841005B2 (en) | 2006-10-25 | 2014-09-23 | Kennametal Inc. | Articles having improved resistance to thermal cracking |
| US8858870B2 (en) | 2008-08-22 | 2014-10-14 | Kennametal Inc. | Earth-boring bits and other parts including cemented carbide |
| US9016406B2 (en) | 2011-09-22 | 2015-04-28 | Kennametal Inc. | Cutting inserts for earth-boring bits |
| US9266171B2 (en) | 2009-07-14 | 2016-02-23 | Kennametal Inc. | Grinding roll including wear resistant working surface |
| US9643236B2 (en) | 2009-11-11 | 2017-05-09 | Landis Solutions Llc | Thread rolling die and method of making same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8637127B2 (en) | 2005-06-27 | 2014-01-28 | Kennametal Inc. | Composite article with coolant channels and tool fabrication method |
| EP2327856B1 (en) | 2006-04-27 | 2016-06-08 | Kennametal Inc. | Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods |
| US8322465B2 (en) | 2008-08-22 | 2012-12-04 | TDY Industries, LLC | Earth-boring bit parts including hybrid cemented carbides and methods of making the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4726683U (en) * | 1971-04-21 | 1972-11-25 | ||
| JPS5757525A (en) * | 1980-05-30 | 1982-04-06 | Riikuman Peetaa | Method and apparatus for measuring blood pressure |
| JPS59169706A (en) * | 1983-03-14 | 1984-09-25 | Sumitomo Electric Ind Ltd | Drill |
| JPS59175912A (en) * | 1983-03-25 | 1984-10-05 | Sumitomo Electric Ind Ltd | Carbide drill |
-
1983
- 1983-08-25 JP JP15552683A patent/JPS6048207A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4726683U (en) * | 1971-04-21 | 1972-11-25 | ||
| JPS5757525A (en) * | 1980-05-30 | 1982-04-06 | Riikuman Peetaa | Method and apparatus for measuring blood pressure |
| JPS59169706A (en) * | 1983-03-14 | 1984-09-25 | Sumitomo Electric Ind Ltd | Drill |
| JPS59175912A (en) * | 1983-03-25 | 1984-10-05 | Sumitomo Electric Ind Ltd | Carbide drill |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62218010A (en) * | 1986-03-19 | 1987-09-25 | Mitsubishi Metal Corp | Carbide drill |
| US4826368A (en) * | 1986-06-07 | 1989-05-02 | Hertel Ag Werkzeuge & Hartstoffe | Twist drill |
| JPH02503074A (en) * | 1987-04-10 | 1990-09-27 | エケロット，スベン | Drill |
| US5094571A (en) * | 1987-04-10 | 1992-03-10 | Ekerot Sven Torbjoern | Drill |
| JP4912552B2 (en) * | 1999-12-14 | 2012-04-11 | ティーディーワイ・インダストリーズ・インコーポレーテッド | Compound rotary cutting tool |
| JP2006512211A (en) * | 2003-01-02 | 2006-04-13 | フリードリヒス アルノ | Method and apparatus for making carbide tools |
| US8841005B2 (en) | 2006-10-25 | 2014-09-23 | Kennametal Inc. | Articles having improved resistance to thermal cracking |
| US8308402B2 (en) * | 2007-05-29 | 2012-11-13 | Sandvik Intellectual Property Ab | Drill body for chip removing machining |
| US20080298918A1 (en) * | 2007-05-29 | 2008-12-04 | Sandvik Intellectual Property Ab | Drill body for chip removing machining |
| US8858870B2 (en) | 2008-08-22 | 2014-10-14 | Kennametal Inc. | Earth-boring bits and other parts including cemented carbide |
| US20120282051A1 (en) * | 2009-05-12 | 2012-11-08 | TDY Industries, LLC | Composite Cemented Carbide Rotary Cutting Tools and Rotary Cutting Tool Blanks |
| US8272816B2 (en) * | 2009-05-12 | 2012-09-25 | TDY Industries, LLC | Composite cemented carbide rotary cutting tools and rotary cutting tool blanks |
| US20100290849A1 (en) * | 2009-05-12 | 2010-11-18 | Tdy Industries, Inc. | Composite cemented carbide rotary cutting tools and rotary cutting tool blanks |
| US8876443B2 (en) | 2009-05-12 | 2014-11-04 | Kennametal Inc. | Composite cemented carbide rotary cutting tools and rotary cutting tool blanks |
| US9435010B2 (en) | 2009-05-12 | 2016-09-06 | Kennametal Inc. | Composite cemented carbide rotary cutting tools and rotary cutting tool blanks |
| US9266171B2 (en) | 2009-07-14 | 2016-02-23 | Kennametal Inc. | Grinding roll including wear resistant working surface |
| US9643236B2 (en) | 2009-11-11 | 2017-05-09 | Landis Solutions Llc | Thread rolling die and method of making same |
| US9016406B2 (en) | 2011-09-22 | 2015-04-28 | Kennametal Inc. | Cutting inserts for earth-boring bits |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6157123B2 (en) | 1986-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6048207A (en) | Ultra-hard drill and its manufacture | |
| US6158304A (en) | Process for forming a center cutting end mill | |
| US6269894B1 (en) | Cutting elements for rotary drill bits | |
| EP2533922B1 (en) | Superhard tool tip and use thereof | |
| US20020059850A1 (en) | Multiple grade cemented carbide inserts for metal working and method of making the same | |
| JPH04217416A (en) | Rotary end mill cutter | |
| CN1116683A (en) | Core bits | |
| JP5306351B2 (en) | Partly ground tool rod made of sintered material | |
| US5486072A (en) | Cutting tools of composite construction | |
| CN107810074A (en) | Cutter, cutting tip and the powder component of compacting | |
| JP2005501743A (en) | Rod-shaped tool for cutting workpieces | |
| JPS59175912A (en) | Carbide drill | |
| JPS6234710A (en) | Cemented carbide drill | |
| JPS61226231A (en) | Manufacture of ultrahard solid drill formed with oil hole | |
| US4983078A (en) | Rotary cutting tool | |
| JP2000043006A (en) | Rotary cutting tool | |
| JPS59169707A (en) | Drill | |
| CN207930077U (en) | It is a kind of step type brazing alloy in cold helical teeth reamer | |
| JP2014140926A (en) | Ultra-high hardness sintered body provided drill and production method thereof | |
| WO1996035537A1 (en) | Diamond or cbn fluted center cutting end mill | |
| CN111014785A (en) | Double-edge chamfering extrusion drilling reamer | |
| JP2720953B2 (en) | Hard sintered body twisted tip | |
| CN109715324B (en) | PCD drill bit and manufacturing method thereof | |
| JP4338881B2 (en) | Manufacturing method of composite torsion sintered body | |
| JP2510764B2 (en) | Manufacturing method of cemented carbide die |