JPS6134108A - High-hardness composite sintered body for brazing tool - Google Patents
High-hardness composite sintered body for brazing toolInfo
- Publication number
- JPS6134108A JPS6134108A JP15677484A JP15677484A JPS6134108A JP S6134108 A JPS6134108 A JP S6134108A JP 15677484 A JP15677484 A JP 15677484A JP 15677484 A JP15677484 A JP 15677484A JP S6134108 A JPS6134108 A JP S6134108A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- hardness
- composite sintered
- tool
- diamond
- 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
Links
Landscapes
- Milling Processes (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、立方晶窒化硼素またはダイヤモンドあるいは
前記混合物からなる高硬度焼結体と鋼または超硬合金や
サーメットなどの硬質物体を結合した高硬度複合焼結体
の改良に関するもので、特にドリルまたはエンドミルな
どの回転工具の切刃部に上記高硬度複合焼結体をロウ付
け固着して用いる該複合焼結体の改良シこ関するもので
ある。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a high-hardness sintered body made of cubic boron nitride, diamond, or a mixture thereof, and a hard object such as steel, cemented carbide, or cermet. This invention relates to the improvement of hardness composite sintered bodies, and in particular to the improvement of said high-hardness composite sintered bodies that are used by brazing and fixing the above-mentioned high-hardness composite sintered bodies to the cutting edge of rotating tools such as drills or end mills. be.
従来、各種の工具ホルダーの所定部位に超硬合金などの
硬質物体をロウ付けして切削工具として広く用いられて
いることは周知である。It is well known that hard objects such as cemented carbide are brazed to predetermined portions of various tool holders and are widely used as cutting tools.
しかし、切削工具の切刃として、その用途が拡大してい
る立方晶窒化硼素またはダイヤモンドあるいは前記した
混合物からなる高硬度焼結体などは、鋼または超硬合金
などの硬質物体やロウ材との親和性が悪く工具ホlレダ
ーなどにロウ付けができないため焼結時に立方晶窒化硼
素またはダイヤモンドあるいは前記混合物の一側に超硬
合金やサーメットなどの硬質物体を配置して焼結するこ
とによって該焼結体と該硬質物を一体的に成形し、これ
の硬質物体側を工具への接面としたスローアウェイ工具
または該接面をロウ付け固着した切削工具が用いられて
いる。However, high-hardness sintered bodies made of cubic boron nitride, diamond, or the above-mentioned mixtures, which are increasingly being used as cutting edges for cutting tools, cannot be used with hard objects such as steel or cemented carbide, or with brazing metal. Since the affinity is poor and it cannot be brazed to tool holders, etc., a hard object such as cemented carbide or cermet is placed on one side of cubic boron nitride, diamond, or a mixture thereof during sintering. A cutting tool is used in which a sintered body and the hard material are integrally molded, and the hard object side thereof is used as a contact surface to the tool, or an indexable tool or a cutting tool in which the contact surface is fixed by brazing.
上記した一側に超硬合金やサーメットなどの硬質物体と
立方晶窒化硼素またはダイヤモンドなどの高硬度物質を
一体焼結した複合焼結体をロウ付け工具に用いた場合、
該硬質物体側を工具ホルダーにロウ付け固着するため、
その固着面は−・側のみとなり、したがって使用時強力
な切削負荷または断続的に加わる切削背負あるいは不測
の事故によって工具に衝撃的な外部背負が加わった場合
は工具ホルダーから該複合焼結体が剥離する危険性があ
る。これらのことは、特にスローアウェイ化が難しい高
硬度材料を穴あけする穿孔工具や難削材料を切削するフ
ライスやエンドミルなどの切刃部を前記複合焼結体とし
て工具ホルダーにロウ付けした回転工具に多く発生し、
その解決が待たれているものである。When the above-mentioned composite sintered body in which a hard object such as cemented carbide or cermet and a high hardness substance such as cubic boron nitride or diamond are integrally sintered on one side is used as a brazing tool,
To braze and secure the hard object side to the tool holder,
The fixed surface is only on the - side, so if the tool is subjected to a strong cutting load or an intermittent cutting load during use, or if an impactful external load is applied to the tool due to an unexpected accident, the composite sintered body will be removed from the tool holder. There is a risk of peeling off. These things are especially true for rotary tools such as drilling tools for drilling holes in hard materials that are difficult to make indexable, milling cutters and end mills for cutting difficult-to-cut materials, whose cutting edges are made of the composite sintered body and brazed to the tool holder. occurs a lot,
A solution is awaited.
本発明は、上記した問題点に鑑みなしたもので、上記し
たような被削材を効果的に切削し、しかもロウ付け強度
が高−いので過酷な切削条件下においてもj工具ホルダ
ーから該複合焼結体が剥離するなどの危険性がきわめて
少ないロウ付け工具用の高硬度複合焼結体を提供するこ
とを目的とするものである。The present invention has been developed in view of the above-mentioned problems, and it is possible to effectively cut the above-mentioned work materials, and since the brazing strength is high, it is possible to cut the workpiece material from the j tool holder even under severe cutting conditions. The object of the present invention is to provide a high-hardness composite sintered body for use in brazing tools, which has an extremely low risk of peeling of the composite sintered body.
本発明は、立方晶窒化硼素またはダイヤモンドあるいは
、これらの混合物を30容量幅以上含む高硬度焼結体と
同期体表1+a、5a、Ga族の炭化物、窒化物または
炭窒化物の1種以上と鉄、コバルト、タングステン、モ
リブデン。The present invention provides a high-hardness sintered body containing cubic boron nitride, diamond, or a mixture thereof in a range of 30 or more volumes, and a synchronous body Table 1+a, 5a, and one or more of Ga group carbides, nitrides, or carbonitrides. Iron, cobalt, tungsten, molybdenum.
クロムの1種以上からなる硬質物体とが結合された高硬
度焼結体で、該高硬度焼結体は厚さo、 o 1〜0.
5 mmのジルコニウム、チタニウム。A high hardness sintered body combined with a hard object made of one or more types of chromium, the high hardness sintered body has a thickness o, o 1 to 0.
5 mm zirconium, titanium.
鉄、コバルト、ニッケルの中間層の1種以上を介して該
硬質物体が少なくとも前記高硬度焼結体の2つの面に結
合されているロウ付け工具用の高硬度複合焼結体である
。This is a high-hardness composite sintered body for a brazing tool, in which the hard object is bonded to at least two surfaces of the high-hardness sintered body through one or more intermediate layers of iron, cobalt, and nickel.
上記した高硬度複合焼結体の構造の一例を第1図(a)
と(blに示すが、これは立方晶窒化硼素またはダイヤ
モンドあるいは、これらの混合物を含む高硬度焼結体1
と、その面14a、11bの両面に周期律表ua、5a
、6’a族の炭化物、窒化物または炭窒化物の1種以上
と鉄、コバルト、タングステン、モリブデン、クロムな
どの1種以上からなる硬質物体2a、2bがジルコニウ
ム、チタニウム、鉄、コバルト、ニッケルなどの金属ま
たは合金で板状の中間層12a、12bを介して一体的
iこ焼結成形された高硬度複合焼結体Aが円柱状(円柱
状でなくてもよい)に形成されている。An example of the structure of the above-mentioned high-hardness composite sintered body is shown in Figure 1(a).
and (shown in bl), this is a high-hardness sintered body 1 containing cubic boron nitride, diamond, or a mixture thereof.
and periodic table ua, 5a on both surfaces 14a, 11b.
, the hard objects 2a and 2b are made of one or more carbides, nitrides, or carbonitrides of group 6'a and one or more of iron, cobalt, tungsten, molybdenum, chromium, etc., are zirconium, titanium, iron, cobalt, nickel. A high-hardness composite sintered body A is formed into a cylindrical shape (it does not have to be cylindrical) by integrally sintering a metal or alloy such as metal or alloy through plate-shaped intermediate layers 12a and 12b. .
なお、上記した立方晶窒化硼素およびダイヤモンドまた
は、これらの混合物の焼結体1中に占める割り合いは容
量で30%〜98%が好適であり、これが30%を下廻
ると該焼結体の硬度の低下と切削時に摩耗が促進するの
で好ましくない。また98容量%を越えると焼結性が悪
くなる。焼結に際して中間層12a、12bに用いるジ
ルコニウム、チタニウム、鉄、コバルト、ニッケルなど
の金属または合金を介して焼結する主な理由は、立方晶
窒化硼素またはダイヤモンドなどの高硬度焼結体と超硬
合金やサーノ・ソトなどの硬質物体の接着強度をあげる
のと同時に焼結時に発生するガスを吸収して焼結性をあ
げるためである。そして上記した合金または金属板の厚
みはo、 o 1〜0.5 mmの範囲内から選定して
用いるのが好適である。The proportion of cubic boron nitride, diamond, or a mixture thereof in the sintered body 1 is preferably 30% to 98% by volume, and if this is less than 30%, the sintered body This is undesirable because it reduces hardness and accelerates wear during cutting. Moreover, if it exceeds 98% by volume, sinterability will deteriorate. The main reason for sintering through metals or alloys such as zirconium, titanium, iron, cobalt, and nickel used for the intermediate layers 12a and 12b during sintering is that high-hardness sintered bodies such as cubic boron nitride or diamond This is to increase the adhesive strength of hard objects such as hard alloys and sano/soto, and at the same time to improve sinterability by absorbing the gas generated during sintering. The thickness of the alloy or metal plate described above is preferably selected from a range of 1 to 0.5 mm.
以上によって得た高硬度複合焼結体Aを所望形状に切断
して工具ホルダーの所定位置にロウ付けして用いる。The high-hardness composite sintered body A obtained as described above is cut into a desired shape and brazed to a predetermined position of a tool holder for use.
次に上記した高硬度複合焼結体Aをロウ付けした工具の
一例として第2図((a)は正面図、(’b)は(a)
の底面図、(clは(a)の側面図)に示したポールエ
ンドミルについて述べる。Next, Figure 2 shows an example of a tool brazed with the above-mentioned high-hardness composite sintered body A ((a) is a front view, ('b) is a
The pole end mill shown in the bottom view of (cl is the side view of (a)) will be described.
上記した工具は、端部にスリット溝壁10a、10bを
有するスリット溝と切屑排出溝1゜c、104などを形
成したもので、シャンク本体10の該スリ・シト溝へ所
定形状に切断した前記した高硬度複合焼結体Aを嵌挿し
て定位置とした後、該焼結体の硬質物体2a、2bとス
リット溝壁10a、lObをロウ付け固着する。The above-mentioned tool has a slit groove having slit groove walls 10a, 10b and a chip discharge groove 1°c, 104 formed at the end thereof, and the slit groove of the shank body 10 is cut into a predetermined shape. After the high-hardness composite sintered body A is inserted and set in place, the hard objects 2a, 2b of the sintered body and the slit groove walls 10a, 1Ob are fixed by brazing.
その後、研削盤などを用いて硬質物体2a。After that, the hard object 2a is cut using a grinder or the like.
2bの部分を研削除去して高硬度焼結体1の切刃100
.100aを形成する。なお、上記実施例はボールエン
ドミルを例示したが、これをドリルまたは周知のエンド
ミルに用いても良いことは勿論であるし、正面フライス
や側フライスまたはバイトなどの切削工具にも用いられ
るものである。しかも、該実施例は該焼結体の上下面に
硬質物体を焼結結合させ、この面をロウ付けした二面固
着のものであるが、これを立方晶窒化硼素またはダイヤ
モンドなどの高硬度焼結体lの側面にも硬質物体2を配
置し焼結結合した所謂三面を硬質物体とした高硬度複合
焼結体を用いてスリ・シト溝の両壁面と底面側の三面を
ロウ付け固着してもよい。The cutting edge 100 of the high hardness sintered body 1 is obtained by removing the portion 2b by grinding.
.. 100a is formed. In addition, although the above-mentioned example illustrated a ball end mill, it goes without saying that this may be used for a drill or a well-known end mill, and it can also be used for cutting tools such as a face milling cutter, a side milling cutter, or a cutting tool. . Moreover, in this example, a hard object is sintered and bonded to the upper and lower surfaces of the sintered body, and these surfaces are brazed to form a two-sided bond. A hard object 2 is also placed on the side surface of the compact 1, and using a high-hardness composite sintered body with the so-called hard objects on the three surfaces sintered and bonded, both wall surfaces and the three bottom surfaces of the groove are brazed and fixed. It's okay.
本発明は以上述べた如く、難削材を能率的に切削する立
方晶窒化硼素やダイヤモンドなどの高硬度焼結体を切削
工具の所定位置に強固に固着できるので、これによって
切削性を効果的に維持しながら該切削工具に強力な切削
負荷または断続的な切削負荷あるいは不測の事故によっ
て該工具に衝撃的°な負荷が加えられても工具本体から
切刃部が剥離する危険性が防止できるのと同時1こ本体
と該焼結体の切刃部が強力に固着・されているため工具
自体の剛性が上り切削時においてビ1りや振動が少なく
なり切刃の欠損も減じ得る高能率な切削工具である。As described above, the present invention is capable of firmly fixing a high-hardness sintered body such as cubic boron nitride or diamond to a predetermined position of a cutting tool, which efficiently cuts difficult-to-cut materials, thereby effectively improving machinability. Even if the cutting tool is subjected to a strong cutting load, intermittent cutting load, or a shocking load due to an unexpected accident, the risk of the cutting edge separating from the tool body can be prevented. At the same time, the main body and the cutting edge of the sintered body are strongly fixed and bonded, which increases the rigidity of the tool itself, reduces vibration and vibration during cutting, and is highly efficient, reducing chipping of the cutting edge. It is a cutting tool.
第1図は高硬度複合焼結体を示したもので、fa)は正
面図、(b)は(alの底面図、第2図はボールエンド
ミルな示したもので、(a)は正面図、(b)は(al
の底面図、(C1は(a)の側面図などである。
1−m=高硬度焼結体 2a、2b−−一硬質物体
10−−−シャンク本体 10a、10b−−一溝壁
10c、10c1.−−−切屑排出溝 14a、キ=
@1)−−一一面 12a、12b−−一中間゛層
A−m−高硬度複合焼結体
第 l 図Figure 1 shows a high-hardness composite sintered body, fa) is a front view, (b) is a bottom view of (al), Figure 2 is a ball end mill, and (a) is a front view. , (b) is (al
(C1 is a side view of (a), etc.) 1-m=high hardness sintered body 2a, 2b--hard object
10---Shank body 10a, 10b---Single groove wall 10c, 10c1. ---Chip discharge groove 14a, key=
@1)--One side 12a, 12b--One middle layer
A-m-High hardness composite sintered body Fig. l
Claims (1)
れらの混合物を30容量%以上含む高硬度焼結体と、周
期律表4a、5a、6a族の炭化物、窒化物または炭窒
化物の1種以上と鉄、コバルト、ニッケル、タングステ
ン モリブデン、クロームの1種以上からなる硬質物体とが
結合された高硬度焼結体で、該高硬度焼結体は厚さ0.
01〜0.5mmのジルコニウム、チタニウム、鉄、コ
バルト、ニッケルの中間層を介して該硬質物体が少なく
とも前記高硬度焼結体の2つの面に結合されていること
を特徴とするロウ付け工具用の高硬度複合焼結体。(1) A high-hardness sintered body containing 30% by volume or more of cubic boron nitride, diamond, or a mixture thereof, and one or more carbides, nitrides, or carbonitrides of groups 4a, 5a, and 6a of the periodic table. A high-hardness sintered body combined with a hard object made of one or more of iron, cobalt, nickel, tungsten molybdenum, and chromium, and the high-hardness sintered body has a thickness of 0.
A brazing tool characterized in that the hard object is bonded to at least two surfaces of the high-hardness sintered body through an intermediate layer of zirconium, titanium, iron, cobalt, and nickel having a thickness of 01 to 0.5 mm. High hardness composite sintered body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15677484A JPS6134108A (en) | 1984-07-26 | 1984-07-26 | High-hardness composite sintered body for brazing tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15677484A JPS6134108A (en) | 1984-07-26 | 1984-07-26 | High-hardness composite sintered body for brazing tool |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6134108A true JPS6134108A (en) | 1986-02-18 |
Family
ID=15635018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15677484A Pending JPS6134108A (en) | 1984-07-26 | 1984-07-26 | High-hardness composite sintered body for brazing tool |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6134108A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63111104A (en) * | 1986-10-30 | 1988-05-16 | Ishizuka Kenkyusho:Kk | Composite sintered body and its production |
JPS63111105A (en) * | 1986-10-30 | 1988-05-16 | Ishizuka Kenkyusho:Kk | Composite sintered body and its production |
JPS6464701A (en) * | 1987-09-05 | 1989-03-10 | Dijet Ind Co Ltd | Cutting tool with very hard compound sintered compact serving as cutting blade |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5164693A (en) * | 1974-09-18 | 1976-06-04 | De Beers Ind Diamond | Kenmaatsushukutai oyobi sonoseizohoho |
JPS5212126A (en) * | 1975-07-16 | 1977-01-29 | Hitachi Chem Co Ltd | Process for preparation of methacrylic acid |
JPS53109509A (en) * | 1977-03-03 | 1978-09-25 | De Beers Ind Diamond | Abrasive body |
JPS5739106A (en) * | 1980-08-14 | 1982-03-04 | Hiroshi Ishizuka | Production of diamond ultrahard alloy composite |
JPS5766805A (en) * | 1980-10-06 | 1982-04-23 | Nippon Oil & Fats Co Ltd | Cutting tool of high hardness |
-
1984
- 1984-07-26 JP JP15677484A patent/JPS6134108A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5164693A (en) * | 1974-09-18 | 1976-06-04 | De Beers Ind Diamond | Kenmaatsushukutai oyobi sonoseizohoho |
JPS5212126A (en) * | 1975-07-16 | 1977-01-29 | Hitachi Chem Co Ltd | Process for preparation of methacrylic acid |
JPS53109509A (en) * | 1977-03-03 | 1978-09-25 | De Beers Ind Diamond | Abrasive body |
JPS5739106A (en) * | 1980-08-14 | 1982-03-04 | Hiroshi Ishizuka | Production of diamond ultrahard alloy composite |
JPS5766805A (en) * | 1980-10-06 | 1982-04-23 | Nippon Oil & Fats Co Ltd | Cutting tool of high hardness |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63111104A (en) * | 1986-10-30 | 1988-05-16 | Ishizuka Kenkyusho:Kk | Composite sintered body and its production |
JPS63111105A (en) * | 1986-10-30 | 1988-05-16 | Ishizuka Kenkyusho:Kk | Composite sintered body and its production |
JPS6464701A (en) * | 1987-09-05 | 1989-03-10 | Dijet Ind Co Ltd | Cutting tool with very hard compound sintered compact serving as cutting blade |
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