JPS58102616A - Throw away cutter - Google Patents

Throw away cutter

Info

Publication number
JPS58102616A
JPS58102616A JP20302481A JP20302481A JPS58102616A JP S58102616 A JPS58102616 A JP S58102616A JP 20302481 A JP20302481 A JP 20302481A JP 20302481 A JP20302481 A JP 20302481A JP S58102616 A JPS58102616 A JP S58102616A
Authority
JP
Japan
Prior art keywords
chip
cutting
ceramic
cutting edge
pressure sintered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP20302481A
Other languages
Japanese (ja)
Other versions
JPS6219967B2 (en
Inventor
Shinichi Kamitsuma
上妻 真一
Hiroshi Shimomura
博 下村
Tatsuo Arai
新井 辰夫
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.)
Mitsubishi Metal Corp
Original Assignee
Mitsubishi Metal Corp
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 Mitsubishi Metal Corp filed Critical Mitsubishi Metal Corp
Priority to JP20302481A priority Critical patent/JPS58102616A/en
Publication of JPS58102616A publication Critical patent/JPS58102616A/en
Publication of JPS6219967B2 publication Critical patent/JPS6219967B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C5/00Milling-cutters
    • B23C5/02Milling-cutters characterised by the shape of the cutter
    • B23C5/06Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

PURPOSE:To quicken the cutting work by combining a ceramic chip suitable for the high speed cutting with a super high pressure sintered chip having high strength under high temperature and high abrasion resistance. CONSTITUTION:A cutting edge chip mounting section 2 is provided alternately with a ceramic chip 6 arranged along the circumference of a tool body 1 and a super high pressure sintered chip 7. The chip 7 is projected further to the cutting direction than the chip 6. The chip 7 is provided at a finished chip. The ratio between the numbers of the chip 7 group and the chip 6 group is set in the range of 1/4-1/1. The finish face 8 is cut by a width cutting edge 7D of said chip 7 to provide a good finish face with high speed.

Description

【発明の詳細な説明】 この発明は、いわゆるステップカット形式を収ったスロ
ーアウェイ弐カッタの改良に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a second indexable cutter that accommodates a so-called step cut type.

一般に、正面フライスや貴フライスは、−(2)転する
工具本体の円周方向化沿って複数の刃部が設けられた構
成である・この機のカッタにおいて、たとえばシリンダ
ブロック等の鋳物の仕上用カッタとしては、刃部を超硬
合会あるいはサーメツト製のスローアウェイチップによ
って構成したものが多用されている。
In general, a face milling cutter or a noble milling cutter has a configuration in which - (2) a plurality of blades are provided along the circumferential direction of the rotating tool body; As for cutters, those having a blade portion made of an indexable tip made of cemented carbide or cermet are often used.

ここで、このようなスローアウェイ弐カッタによる切削
加工効率を高める方法として、いわゆるステップカット
形式を取ることが知られている。
Here, it is known that a so-called step-cut method is used as a method of increasing the cutting efficiency using such a second indexable cutter.

このステップカット形式とは、たとえば隣り合うチップ
を千鳥状に交互に配置するなど、前記複数あるスローア
ウェイチップについて、その切刃の位置を切り込み方向
に異ならせた二つの群を設けるようにしたものである。
This step-cutting method is a method in which two groups of the plurality of indexable inserts are provided with different positions of the cutting edges in the cutting direction, such as by arranging adjacent inserts alternately in a staggered manner. It is.

このようなステップカット形式にも二つのl1lill
I、すなわち、一つに仕上げ面稽縦を曳くするためのも
の、また一つに切削速度を高めるためのもの、がある・
両者ともにスローアウェイチップが全体としてニーある
という点では共通しているが、前者のものにあっては、
一群のものの切刃に対するtthsのものの切刃の突出
量がたとえば0.05aos程度と、後者のものに比し
てかなり小さい。この発明はこのような突出量の小さい
二つのスローアウェイチップ群を有するものの改良を図
るものであるO この種のカッタに剛いるスローアウェイチップとしては
、前述したように、一般に超硬合金あるいはサーメット
Allのものが専ら用いられているが、従来では異なる
群についてチップ形状を異ならせるという配慮がなされ
ていたにすぎない。しかし、このような在来の超硬合金
あるいはサーメッ1トのものにあっては、高速加工に耐
えるという点では材料の特性上限界があった。この点、
セラミックあるいは超高圧焼結体(立方晶型窒化41!
y1票やダイヤモンド等)の方が望ましいといえる。
There are also two l1lill in this step cut format.
In other words, there is one for improving the finishing surface and one for increasing the cutting speed.
Both have the same thing in that the throwaway tip has a knee as a whole, but in the former,
The amount of protrusion of the cutting edge of the tths with respect to the cutting edge of the group is, for example, about 0.05 aos, which is considerably smaller than that of the latter. This invention aims to improve a device having two groups of indexable tips with a small protrusion.As mentioned above, the indexable tips used in this type of cutter are generally made of cemented carbide or cermet. All chips are exclusively used, but conventionally the only consideration has been to make the chip shapes different for different groups. However, such conventional cemented carbide or cermet materials have limitations in terms of their ability to withstand high-speed machining due to their material properties. In this point,
Ceramic or ultra-high pressure sintered body (cubic crystal nitride 41!
y1 votes, diamonds, etc.) are more desirable.

この発明は以上の点を考慮してなされたもので、仕上げ
面を良くするステンプカットの利点を生かしつつ、さら
に切削加工の嶋速化をも図ることができるスローアウェ
イ弐カッタを提供するものである。
This invention has been made in consideration of the above points, and aims to provide an indexable second cutter that can take advantage of the advantage of stamp cutting that improves the finished surface, while also increasing the cutting speed. It is.

以下、添付図面を参照しながら、この発明の内容を明ら
かにする。
Hereinafter, the content of the present invention will be clarified with reference to the accompanying drawings.

まず、この発明によるスローアウェイ弐カッタの特徴で
あるが、その特黴は、ニーあるスローアウェイチップの
うち、一群を超高圧焼結体製、他群をセラミック製とし
、しかも前者の超高圧焼結体製のものの切刃を後者のセ
ラミック製のものの切刃よりも切り込み方向に突出させ
るようにした点にある。すなわち、この発明では、尚速
切側に厳適なセラミックチップと、高温下でも強度が高
くかつ耐摩耗性にすぐれた超高圧焼結体チップとの組み
合わせによりて、前述した目的を通成しよつとするもの
である。この場合、セラミックおよび超高圧焼結体の各
特性を最大限に生かすため、     ′超高圧焼結体
の方を仕上げに供するようにしている点に着意されたい
。また、各群のチップの数の比については徳々変えるこ
とができるが、工具の寿命とコストとを考慮すると、超
高圧焼結体製とセラミック製との各スローアウェイチッ
プ群の数なみに、超高圧焼結体製のものを多くすれば工
具寿命を高めることができるが、それだけコスト高とな
り、また逆に、セラミック製のものを多くすればコスト
を低減できるが、工具寿命は低下する。
First, the feature of the second indexable cutter according to the present invention is that one group of knee indexable tips is made of ultra-high pressure sintered body and the other group is made of ceramic; The point is that the cutting edge of the solid body is made to protrude in the cutting direction more than the cutting edge of the ceramic one. That is, this invention achieves the above-mentioned purpose by combining a ceramic tip that is suitable for fast cutting and an ultra-high pressure sintered tip that has high strength and excellent wear resistance even at high temperatures. It's something to look forward to. In this case, in order to make the most of the characteristics of the ceramic and the ultra-high pressure sintered body, it should be noted that the ultra-high pressure sintered body is subjected to finishing. Furthermore, although the ratio of the number of inserts in each group can be changed arbitrarily, in consideration of tool life and cost, the ratio of the number of indexable inserts in each group of ultra-high pressure sintered and ceramic inserts should be adjusted accordingly. If more tools are made of ultra-high-pressure sintered material, the tool life can be increased, but the cost will increase accordingly.On the other hand, if more tools are made of ceramic, the cost can be reduced, but the tool life will be shortened. .

これらの調和点として、上の値は存在する。The above value exists as a point of harmony between them.

つぎに、正面フライスに適用した場合のこの発明の実施
例について説明する。実施例は二つあり、一つは第1H
および第2図化示されており、もう一つは銅3図および
第4図に示されているが、両夾施例ともに、拙状の工具
本体1には、その一端に機嫌への取り付は部2を有し、
その他端外周部に切刃チップ絨置部3がIX数個形成さ
れている。
Next, an embodiment of the present invention applied to a face milling cutter will be described. There are two examples, one is the 1st H
and Fig. 2, and the other is shown in Fig. 3 and Fig. 4. In both cases, the crude tool body 1 has a handle at one end. The attachment has part 2;
Several cutting blade chip placement portions 3 are formed on the outer periphery of the other end.

そして、円周方向に沿りたこれら切刃チップ絨置部3に
はそれぞれ締結くさび4およびクランプねじ5によって
スローアウェイチップが取り付けられ、各部分がそれぞ
れ刃部を構成している。
A throw-away tip is attached to each of these cutting edge tip placement portions 3 along the circumferential direction by a fastening wedge 4 and a clamp screw 5, and each portion constitutes a blade portion.

m1図および第2図に示される第一実施例の場合、FJ
I記切刃チップIIt置装2には、工具本体1の円周方
向に沿ってセラミック製のチップ6と超高圧焼結体製の
チップ7とが交互に設けられているっこれらのセラミッ
ク製のチップ6と超高圧焼結体製のチップ7の外周切刃
6a、7mには基本的にステップがないが、切削仕上げ
面8方向、つtり切り込み方向にはステップ人が設けら
れている。
In the case of the first embodiment shown in Figure m1 and Figure 2, FJ
The cutting blade tip IIt device 2 is provided with ceramic tips 6 and ultra-high pressure sintered tips 7 alternately along the circumferential direction of the tool body 1. The outer cutting edges 6a and 7m of the insert 6 and the insert 7 made of ultra-high pressure sintered body basically have no steps, but steps are provided in the direction of the finished cutting surface 8 and in the direction of the cut. .

このステップ人の大きさについては、超高圧焼結体の強
度と仕上げtiim度との兼ね合いから、セラミック製
のチップ6の副切刃6bの蛾大突出切刃より超高圧焼結
体製のチップ7の副切刃7bの最大突出切刃が0.01
〜0.1閣の範囲に位置するように設定されている。し
たがりて、切削仕上げ面8は超高圧焼結体製のチップ7
の副切刃7bによって切削形成される・ 一方、m3図および184図に示される第二実施例の場
合にも、スローアウェイチップの配列については、纂−
実M?1の場合と同様に、セラミック製のチップ16と
超高圧焼結体製のチップ17とが交互に位置するように
なされ、しかも、各チップ16.17の副切刃16b、
17bについて、切削仕上げ面18方向にステップ人が
設けられている。しかし、第二実施例チこあっては、各
チップ16.17の外局切刃16a、17aについても
ステップBが設けられている。この場合、ステップBの
大きさについては、切削速度との兼ね曾いから、セラミ
ック製のチップ16の外周切刃16mの峻大突出切刃よ
り超高圧焼結体製のチップ17の外周切刃171の傘大
突出切刃が一般的には0.01〜1.Oa、好ましくは
0.3〜0.4關の範囲に位置するように設定されてい
る。したがって、この第二実施例の場合、外周−の切削
は主にセラミック製のチップ16の外周切刃16xで行
ない、正面の切削仕上げ面18鋼の切削は主に超高圧焼
結体製のチップ17の副切刃17bで行なうことになる
。ここで、切削仕上げ面18@の切削を主に超高圧焼結
体製のもので行なうようにしているのに対し、外周側の
切削を主にセラミック製のもので行なうとしているのは
、平削りの場合外周側には仕上げ面が残存しないからで
ある。
Regarding the size of the stepper, from the viewpoint of the strength of the ultra-high pressure sintered body and the degree of finishing, the tip made of the ultra-high pressure sintered body is smaller than the moth-sized protruding cutting edge of the minor cutting edge 6b of the ceramic tip 6. The maximum protruding cutting edge of the minor cutting edge 7b of No. 7 is 0.01
It is set to be located in the range of ~0.1 kaku. Therefore, the cut surface 8 is a tip 7 made of an ultra-high pressure sintered body.
On the other hand, also in the case of the second embodiment shown in Figures M3 and 184, the arrangement of the indexable inserts is
Real M? 1, the ceramic tips 16 and the ultra-high pressure sintered tips 17 are arranged alternately, and each tip 16, 17 has a minor cutting edge 16b,
Regarding 17b, a step person is provided in the direction of the finished cutting surface 18. However, in the second embodiment, step B is also provided for the external cutting edges 16a, 17a of each tip 16,17. In this case, the size of step B should be determined such that the outer cutting edge of the ultra-high pressure sintered tip 17 is larger than the steeply protruding cutting edge of the outer cutting edge of the ceramic tip 16 of 16 m, since it is compatible with the cutting speed. The large protruding cutting edge of 171 is generally 0.01 to 1. Oa, preferably in the range of 0.3 to 0.4 degrees. Therefore, in the case of this second embodiment, cutting of the outer periphery is mainly performed with the outer cutting edge 16x of the ceramic tip 16, and cutting of the front finished surface 18 of steel is mainly performed with the ultra-high pressure sintered tip. This is done using the No. 17 auxiliary cutting edge 17b. Here, the cutting of the finished surface 18@ is mainly done with a tool made of ultra-high pressure sintered body, whereas the cutting of the outer circumference side is mainly done with a tool made of ceramic. This is because in the case of cutting, no finished surface remains on the outer circumferential side.

なお、セラミック鯛とN鵬圧@結体製の各チップ6.1
6;7,17の配列および情故郷につぃては、前述のと
おり、工具の轡命やコストを考慮して槽々変更すること
ができるのは勿論である。
In addition, each chip 6.1 made by ceramic sea bream and Nho pressure @ Keitai
As mentioned above, the arrangement and location of 6; 7 and 17 can of course be changed at any time, taking into consideration the lifespan and cost of the tool.

以上のように、この発明にあっては、高速切削に鍾適な
セラミックチップと、高温下でも強度が高くかつ耐摩耗
性にすぐれた超高圧焼結体チップとの特定の組み合わせ
によって、仕上げ面を夷くするステップカットの利点を
生かしつつ、さらに切St+加工の高速化をも図ること
ができるという優れた効果を得ることができる。なお、
実際上、この@明の適用により工具寿命について、すべ
てをセラミックチップで構成した場合に比べて5〜10
倍の向上が図れた。
As described above, in this invention, the finished surface is improved by a specific combination of a ceramic tip suitable for high-speed cutting and an ultra-high pressure sintered tip that has high strength even under high temperatures and excellent wear resistance. It is possible to obtain the excellent effect of making it possible to further increase the speed of cutting St+ processing while taking advantage of the advantage of step cutting that increases the cutting speed. In addition,
In practice, the application of this method reduces tool life by 5 to 10% compared to when all ceramic chips are used.
We achieved a two-fold improvement.

【図面の簡単な説明】[Brief explanation of the drawing]

m1図およびm2図はこの発明による第−実施例を示し
、第1図が断面図、第2図が平面図、纂3図およびm4
図はこの発明による輔二爽り例を示し、m3図がV@面
図、144図が平面図である。 l・・・・・・工具本体、6.16・・・・・・セラミ
ック製のチップ、7.17・・・・・・超高圧焼結体製
のチップ、6m、7m、16m、 17F−−−−−外
周切刃、6b、7b、16b、17b・・・・・副切刃
。 出顧大三菱金属株式会社 291図 り 第3図
Figures m1 and m2 show a first embodiment according to the present invention, in which figure 1 is a sectional view, figure 2 is a plan view, schematic diagram 3, and figure m4.
The drawings show an example of the air conditioner according to the present invention, where the m3 drawing is a V@ side view and the 144th drawing is a plan view. l... Tool body, 6.16... Ceramic tip, 7.17... Ultra high pressure sintered tip, 6m, 7m, 16m, 17F- -----Outer cutting edge, 6b, 7b, 16b, 17b... minor cutting edge. Sekkudai Mitsubishi Metals Co., Ltd. 291 diagram Figure 3

Claims (1)

【特許請求の範囲】[Claims] 1、回転する工具本体の円周方向に沿って複数の刃部が
設けられ、これら刃部には切刃の位置が切り込み方向に
わずかに異なる二つのスローアウェイチップ群があり、
スローアウェイチップの一群は超高圧焼結体製、他群は
セラミック製で、前者の超高圧焼結体製のものの切刃が
4Ik者のセラミック製のものの切刃よりも切り込み方
向に突出していることを%徴とするスローアウェイ弐カ
ッタ◎2、超高圧焼結体製とセラミック製との各スロー
アある特許請求の範囲第1項記載のスローアウェイ武カ
ッタ。
1. A plurality of blade parts are provided along the circumferential direction of the rotating tool body, and these blade parts have two indexable tip groups whose cutting edge positions are slightly different in the cutting direction.
One group of indexable inserts is made of ultra-high-pressure sintered material, and the other group is made of ceramic, with the cutting edge of the former made of ultra-high-pressure sintered material protruding in the cutting direction more than the cutting edge of the 4Ik ceramic one. A throw-away cutter according to claim 1, which has throwers made of an ultra-high pressure sintered body and a ceramic thrower.
JP20302481A 1981-12-16 1981-12-16 Throw away cutter Granted JPS58102616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20302481A JPS58102616A (en) 1981-12-16 1981-12-16 Throw away cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20302481A JPS58102616A (en) 1981-12-16 1981-12-16 Throw away cutter

Publications (2)

Publication Number Publication Date
JPS58102616A true JPS58102616A (en) 1983-06-18
JPS6219967B2 JPS6219967B2 (en) 1987-05-01

Family

ID=16467079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20302481A Granted JPS58102616A (en) 1981-12-16 1981-12-16 Throw away cutter

Country Status (1)

Country Link
JP (1) JPS58102616A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134482A (en) * 1974-09-17 1976-03-24 Dijet Ind Co Ltd SEIMITSUSHIAGEYOSUROOAUEISHOMENFURAISU
JPS57138522A (en) * 1981-02-16 1982-08-26 Sumitomo Electric Ind Ltd Compound rotary cutter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134482A (en) * 1974-09-17 1976-03-24 Dijet Ind Co Ltd SEIMITSUSHIAGEYOSUROOAUEISHOMENFURAISU
JPS57138522A (en) * 1981-02-16 1982-08-26 Sumitomo Electric Ind Ltd Compound rotary cutter

Also Published As

Publication number Publication date
JPS6219967B2 (en) 1987-05-01

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