JPS6239101A - Throw away chip - Google Patents
Throw away chipInfo
- Publication number
- JPS6239101A JPS6239101A JP17781285A JP17781285A JPS6239101A JP S6239101 A JPS6239101 A JP S6239101A JP 17781285 A JP17781285 A JP 17781285A JP 17781285 A JP17781285 A JP 17781285A JP S6239101 A JPS6239101 A JP S6239101A
- Authority
- JP
- Japan
- Prior art keywords
- land
- hollow
- occurrence
- flaking
- throw away
- 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
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
- B23B27/145—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness characterised by having a special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/08—Rake or top surfaces
- B23B2200/085—Rake or top surfaces discontinuous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/08—Rake or top surfaces
- B23B2200/086—Rake or top surfaces with one or more grooves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【発明の詳細な説明】
＆匪正ｌ江
［産業上の利用分野］
本発明は切削用のスローアウェイチップに関し、特に高
硬度材料の切削に使用するスローアウェイチップに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an indexable tip for cutting, and particularly to an indexable tip used for cutting high hardness materials.
［従来の技術］
近年、高硬度材料の加工用に超硬合金、あるいはセラミ
ック製のスローアウェイチップが開発され、従来行なわ
れていた研削中心の加工に替えて、こうした超硬合金、
あるいはセラミック製のスローアウェイチップを用いた
高硬度材料の切削加工が広く行なわれるようになった。[Prior art] In recent years, indexable inserts made of cemented carbide or ceramic have been developed for processing high-hardness materials.
Alternatively, cutting of high-hardness materials using ceramic indexable tips has become widespread.
［発明が解決しようとげる問題点コ
ところが、こうした従来のスローアウェイチップには、
切削中にチップのづくい而に工具寿命を決定する大きな
要因となる剥離いわゆるフレーキングが生じるという問
題があった。フレーキングの発生には種々のメカニズｌ
＼が関与するが、例えば第６図に示すようにクレータ摩
耗から進行づろものがある。第６図（Ａ）はクレータ摩
耗の発生状況を示づ刃先の段ｊ面図、第６図（Ｂ）はク
レータ摩耗からフレーキングが発生し欠けへと進行づる
状況を示す刃先の断面図である。[Problems that the invention aims to solve] However, these conventional throw-away tips have
There has been a problem in that chips are formed during cutting and so-called flaking occurs, which is a major factor in determining tool life. There are various mechanisms for the occurrence of flaking.
＼ is involved, but as shown in Fig. 6, for example, there is a process that progresses from crater wear. Fig. 6 (A) is a step J-side view of the cutting edge showing the occurrence of crater wear, and Fig. 6 (B) is a cross-sectional view of the cutting edge showing the situation in which flaking occurs from crater wear and progresses to chipping. be.
高硬度材料を切削すると、切粉は加工硬化により非常に
硬くなり、このためスローアウェイチップとり粉との接
触面にクレータ摩耗が生じる。第６図（Ａ＞に示すよう
に、クレータ摩耗が牛じた初期の段階では、その面はク
レータ摩耗面１であり、切粉の流れ方向は二点ｉｎ ｉ
ａで示寸方向である。しかし、さらにクレータ摩耗が
進行すると、その面はクレータ摩耗面２となり・切粉の
流れ方向は二点鎖線すで示す方向となる。この際、深く
えぐれたクレータ摩耗面２の終端面２ａは、切１３）の
流れ方向にとって壁として働き、大きな力を受け、この
終端面２ａが切粉の流れ抵抗に耐えられなくなると、第
６図（Ｂ）に示すフレーキング３をひさ起こすことがあ
り、場合によっては刃先４の近傍にまで達する様な大き
なフレーキング５となることがある。この様な状態どな
ると刃先４の強度が弱くなり欠け６を生じ、切れ味が急
激に低下し、切削を続りることができなくなる。従って
、従来のスローアウェイチップで１．１、フレーキング
によってそのノＩ命が著しく短くなってしまうことがあ
り問題となっていた。When cutting high-hardness materials, the chips become extremely hard due to work hardening, which causes crater wear on the contact surface of the indexable tip with the chips. As shown in Fig. 6 (A>), in the early stage when crater wear has subsided, that surface is crater wear surface 1, and the direction of flow of chips is at two points in i.
A indicates the dimension direction. However, as the crater wear progresses further, that surface becomes the crater wear surface 2, and the flow direction of the chips becomes the direction already shown by the two-dot chain line. At this time, the deeply gouged terminal surface 2a of the crater wear surface 2 acts as a wall in the flow direction of the cut 13) and receives a large force, and when the terminal surface 2a cannot withstand the flow resistance of the chips, the sixth The flaking 3 shown in Figure (B) may be raised, and in some cases, the flaking 5 may be large enough to reach the vicinity of the cutting edge 4. When such a situation occurs, the strength of the cutting edge 4 becomes weaker, causing chipping 6, and sharpness decreases rapidly, making it impossible to continue cutting. Therefore, the life of the conventional indexable tip (1.1) may be significantly shortened due to flaking, which has been a problem.
そこで本発明は、フレーキングの発生ひいては欠けの発
生を防止しチップの高寿命を実現することを目的として
なされた。Therefore, the present invention was made with the object of preventing the occurrence of flaking and even chipping, and realizing a long life of the chip.
及」Ｊと佐羞−
［問題点を解決するための手段］
かかる目的を実現すべく、本発明は上記問題を解決づ−
るだめの手段として、次の構成を取った。[Means for solving the problems] In order to achieve the above object, the present invention solves the above problems.
As a means to prevent this, we adopted the following structure.
これを第１図で説明する。第１図は本発明に係るスロー
アウェイチップの−（Ｒ成例を示す刃先の断面図である
。This will be explained with reference to FIG. FIG. 1 is a cross-sectional view of the cutting edge of the indexable insert according to the present invention, showing a -(R) configuration.
即し、本発明の要旨は、多角形状をしたスローアウェイ
チップの上下面の少なく共一方に設けられた刃先４の後
方にチャンファ−７とランドε３とを形成し、該ランド
８の後方に四部９を設けたことを特徴とするスローアウ
ェイチップの構成にある。That is, the gist of the present invention is to form a chamfer 7 and a land ε3 behind the cutting edge 4 provided on at least one of the upper and lower surfaces of a polygonal indexable insert, and to form a chamfer 7 and a land ε3 behind the land 8. 9 is provided.
［作用］
本発明のスローアウェイチップは、前述の四部９を設け
ており、この凹部９は第６図（△）に示すように、クレ
ータ摩耗が進行した場合には、終端面２ａはできないか
又はできたとしても終端面２ａの厚さは薄く、切粉の流
れ抵抗により容易に壊れ、切粉の流れ抵抗を小さく維持
するように働き、フレーキングの発生を防止する。[Function] The indexable tip of the present invention is provided with the above-mentioned four parts 9, and as shown in FIG. Or, even if it is possible, the thickness of the end face 2a is thin and it is easily broken by the flow resistance of chips, and works to keep the flow resistance of chips small, thereby preventing the occurrence of flaking.
［実施例］ 以下に木１’を明の実施例を図面に基づいて説明する。[Example] An embodiment of the tree 1' will be described below based on the drawings.
第２図は第一実施例としてのスローアウェイチップの形
状を示ず平面図、第３図は第２図のＡ−へ断面図である
。FIG. 2 is a plan view showing the shape of the indexable tip according to the first embodiment, and FIG. 3 is a sectional view taken along line A- in FIG. 2.
図示する如く、セラミック製のスローアウェイチップ１
０には、その縁部に凹部１１がドーナツツ状に設けられ
ている。本実施例においてチャンフッ７−とランドとの
中文は、０．２ｍｆｆ１とした。本実施例のようにセラ
ミック製スローアウェイチップを用いて高硬度材料を切
削する場合には、この立の１法は○、ｉｍｍ以上とした
方が切粉の流れが良く、良好な切削ができる。As shown in the figure, ceramic indexable tip 1
0 is provided with a donut-shaped recess 11 at its edge. In this embodiment, the Chinese characters for Changfu 7- and Land are 0.2mff1. When cutting high-hardness materials using a ceramic indexable insert as in this example, one method of this method is to set the diameter to ○, imm or more for better flow of chips and better cutting. .
以上のように構成された本実施例にＪ３いては、チップ
寿命が改善され高寿命が得られた。例えば、被削材５Ｋ
Ｄ１１．硬度１−Ｉ ＲＣ６２を用い、切削速度１５０
１１１／分、送り０．１３ｍｍ／ｒｅｖ 、切込みＱ、
５ｍｍにおけるチップ′Ｒ命は次表の如くである。使用
したスローアウェイチップの形状はＪＩＳＳＮＧＮ４３
２である。In this example configured as described above, the chip life was improved and a long life was obtained in J3. For example, work material 5K
D11. Using hardness 1-I RC62, cutting speed 150
111/min, feed 0.13mm/rev, depth of cut Q,
The tip'R life at 5mm is as shown in the following table. The shape of the throw-away tip used is JISSNGN43.
It is 2.
次に他の実施例を示す。第４図は第二実施例としてのス
ローアウェイチップの形状を示す平面図、第５図は第４
図の８−［３断面図である。Next, another example will be shown. FIG. 4 is a plan view showing the shape of the indexable tip as the second embodiment, and FIG.
8-[3 sectional view of the figure.
図示する如り、スロー７ウエイヂツプ１２の片面にチャ
ンファ−とランドとを残し、他の部分のすべてを四部１
３としている。これにより第１実施例の効果の他にチッ
プ製作時の金型形状を単純にすることができ、又セラミ
゛ツク材ＩＩの節減を図ることができる。As shown in the figure, the chamfer and land are left on one side of the throw 7-way dip 12, and all other parts are cut into four parts.
It is set at 3. As a result, in addition to the effects of the first embodiment, it is possible to simplify the shape of the mold when manufacturing the chip, and to save the ceramic material II.
以上の実施例において四部１１．１３を設けることによ
り、前述のごとく、欠けの発生を防止づ゛ることができ
、デツプの高寿命を達成することができる。By providing the four parts 11, 13 in the above embodiment, as described above, occurrence of chipping can be prevented and a long life of the depth can be achieved.
尚、チャンファ−とランドとの幅交及び四部の形状は加
工条件及び加工材′質により最適の寸法を選定すればＪ
、い。In addition, if the width intersection between the chamfer and the land and the shape of the four parts are selected optimally depending on the machining conditions and material quality, J
,stomach.
又、四部は、スローアウェイチップの片面のみならず両
面に設けてもよく、チップの形状も四角形に限られるこ
となく、三角形状、ひし形状、多角形状としてもよい。Further, the four parts may be provided not only on one side but also on both sides of the indexable tip, and the shape of the tip is not limited to a square, but may be triangular, rhombic, or polygonal.
チップ材質はセラミックに限らず超硬合金等でもにい。The tip material is not limited to ceramic, but can also be made of cemented carbide.
以上本発明のいくつかの実施例について説明したが、本
発明はこのような実施例に同等限定されるものではなく
、本発明の要旨を逸脱しない範囲にＪ３いて、種々なる
態様で実施し１！：Ｉることは勿論である。Although several embodiments of the present invention have been described above, the present invention is not equally limited to these embodiments, and may be implemented in various forms without departing from the gist of the present invention. ! :I, of course.
１里１弓υＬ
以上＆丁述したように、本発明のスローアウェイチップ
は、凹部を設けることにより、従来のスローアウェイチ
ップに比して、チップの高寿命を実現する優れた効果を
有する。従って、１切刃当りの切削量が増加し、スロー
アウェイチップの節約、チップ交換回数の減少等を実現
し、加工費を節減できるという効果が得られる。1 ri 1 bow υL As described above and above, the indexable tip of the present invention has the excellent effect of realizing a longer life of the tip than the conventional indexable tip by providing the recessed portion. Therefore, the amount of cutting per cutting edge increases, saving on indexable inserts, reducing the number of times of insert replacement, etc., and reducing machining costs.
第１図は、本発明に係るスローアウェイチップの一構成
例を示す刃先の断面図、第２図は本発明に係るスローア
ウェイチップの平面図、第３図は第２図のＡ−へ断面図
、第４図は本発明に係る他の実施例を示すスローアウェ
イチップの平面図、第５図は第４図のＢ−Ｂ断面図、第
６図（Ａ）はクレータ摩耗の発生状、況を示す刃先の断
面図、第６図（Ｂ）はクレータ摩耗からフレーキングが
発生し欠けへと進行する状況を示す刃先の断面図である
。
９．１１．１３・・・四部FIG. 1 is a cross-sectional view of a cutting edge showing an example of the configuration of the indexable tip according to the present invention, FIG. 2 is a plan view of the indexable tip according to the present invention, and FIG. 3 is a cross-sectional view taken along line A in FIG. 4 is a plan view of a throw-away tip showing another embodiment of the present invention, FIG. 5 is a sectional view taken along the line BB in FIG. 4, and FIG. 6(A) is a state of crater wear, FIG. 6(B) is a sectional view of the cutting edge showing a situation in which flaking occurs from crater wear and progresses to chipping. 9.11.13...Part 4
Claims (1)
下面の少なくとも一方に設けられた刃先の後方にチャン
ファーとランドとを形成し、該ランドの後方に凹部を設
けたことを特徴とするスローアウェイチップ。1. A polygonal indexable tip, characterized in that a chamfer and a land are formed behind a cutting edge provided on at least one of the upper and lower surfaces, and a recess is provided behind the land.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17781285A JPS6239101A (en) | 1985-08-12 | 1985-08-12 | Throw away chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17781285A JPS6239101A (en) | 1985-08-12 | 1985-08-12 | Throw away chip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6239101A true JPS6239101A (en) | 1987-02-20 |
| JPH0366082B2 JPH0366082B2 (en) | 1991-10-16 |
Family
ID=16037517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17781285A Granted JPS6239101A (en) | 1985-08-12 | 1985-08-12 | Throw away chip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130195569A1 (en) * | 2012-01-31 | 2013-08-01 | Christoph Gey | Modular cutting insert and method of making same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4921283A (en) * | 1972-06-16 | 1974-02-25 | ||
| JPS51119677U (en) * | 1975-03-25 | 1976-09-28 | ||
| JPS5590207A (en) * | 1978-11-17 | 1980-07-08 | Kennametal Inc | Cutting insert |
-
1985
- 1985-08-12 JP JP17781285A patent/JPS6239101A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4921283A (en) * | 1972-06-16 | 1974-02-25 | ||
| JPS51119677U (en) * | 1975-03-25 | 1976-09-28 | ||
| JPS5590207A (en) * | 1978-11-17 | 1980-07-08 | Kennametal Inc | Cutting insert |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130195569A1 (en) * | 2012-01-31 | 2013-08-01 | Christoph Gey | Modular cutting insert and method of making same |
| US8696264B2 (en) * | 2012-01-31 | 2014-04-15 | Kennametal Inc. | Modular cutting insert and method of making same |
| US9440294B2 (en) | 2012-01-31 | 2016-09-13 | Kennametal Inc. | Modular cutting insert and method of making same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0366082B2 (en) | 1991-10-16 |
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