JP2520884Y2 - Throw-away tip - Google Patents
Throw-away tipInfo
- Publication number
- JP2520884Y2 JP2520884Y2 JP11176990U JP11176990U JP2520884Y2 JP 2520884 Y2 JP2520884 Y2 JP 2520884Y2 JP 11176990 U JP11176990 U JP 11176990U JP 11176990 U JP11176990 U JP 11176990U JP 2520884 Y2 JP2520884 Y2 JP 2520884Y2
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- nose
- throw
- cutting
- away tip
- 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.)
- Expired - Fee Related
Links
Description
【考案の詳細な説明】 「産業上の利用分野」 本考案は、スローアウェイチップに関し、特に、ステ
ンレス鋼の切削に有効なスローアウェイチップについて
のものである。ステンレス鋼を切削する際に、切削抵抗
を低くして発熱をおさえることによりチップの磨耗の進
行を抑制し、被削材の加工硬化を極小にし、ステンレス
鋼加工で最も問題となる一次境界の損傷を極小とする刃
先形状を持つスローアウェイチップに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a throw-away tip, and more particularly to a throw-away tip effective for cutting stainless steel. When cutting stainless steel, the cutting resistance is reduced to suppress heat generation, which suppresses the progress of chip wear, minimizes work hardening of the work material, and damages the primary boundary, which is the most problematic in stainless steel processing. The present invention relates to a throw-away tip having a cutting edge shape that minimizes.
「従来の技術」 ステンレス鋼は、その特性として加工硬化を起こし易
く、切屑が生成するときに硬さが増大し、切刃の切込み
境界に相当する一次境界に著しい磨耗が生じ欠損に至る
場合が多い。"Prior art" Stainless steel is apt to undergo work hardening as its property, hardness increases when chips are generated, and significant wear may occur at the primary boundary corresponding to the cutting boundary of the cutting edge, leading to chipping. Many.
ところで、従来のステンレス鋼切削用のスローアウェ
イチップを大別すると、次の二つがある。By the way, the conventional throw-away tips for cutting stainless steel are roughly classified into the following two.
第一に、低抵抗型スローアウェイチップがある。 First, there is a low resistance type throw-away tip.
スローアウェイチップは、第11図に示すように、多角
板形成をなし、その頂角部分にノーズＲ部101とノーズ
Ｒ部101に切刃直線部102を連ねてなる。この低抵抗型ス
ローアウェイチップで切削抵抗を減少させるため、ノー
ズＲ部101および切刃直線部102の外縁には平行ランドを
設けない。As shown in FIG. 11, the throw-away tip is formed into a polygonal plate and has a nose R portion 101 and a nose R portion 101 connected to a straight cutting edge portion 102 at the apex angle portion thereof. In order to reduce the cutting resistance with this low resistance type throw-away tip, no parallel land is provided on the outer edges of the nose R portion 101 and the cutting blade straight portion 102.
また、第12図に示すように、切刃先端にはカケをなく
するため、切刃先端を僅かな大きさの円弧状に形成する
が、その円弧をＲホーニング103と呼んでいる。そのＲ
ホーニング103も通常0.06〜0.08mmに対し低抵抗型スロ
ーアウェイチップでは0.03mm以下の小さな値となってい
る。さらに、図示のように、切削された切屑を分離させ
るブレーカすくい角104は、低抵抗にするため20°程度
と大きく、立ち上がり角105も20〜30°とゆるやかとな
っている。Further, as shown in FIG. 12, in order to eliminate chipping at the tip of the cutting blade, the tip of the cutting blade is formed in an arc shape with a slight size, and the arc is called R honing 103. That R
The honing 103 also has a small value of 0.03 mm or less in the low resistance type throw-away tip, compared with 0.06 to 0.08 mm in general. Further, as shown in the drawing, the breaker rake angle 104 for separating the cut chips is as large as about 20 ° to make the resistance low, and the rising angle 105 is also gentle at 20 to 30 °.
その例として実開昭61−199304号「スローアウェイチ
ップ」がある。An example is Jitsukai Sho 61-199304 "Throw Away Chip".
第二に、切刃強度アップ型スローアウェイチップがあ
る。この切刃強度アップ型スローアウェイチップは、切
刃の強度を増し一次境界の損傷を防ぐために、ノーズＲ
部と切刃直線部に平行ランドを設け、Ｒホーニングは0.
08〜0.1mm以上と大きく形成している。Secondly, there is a throw-away tip with improved cutting edge strength. This cutting edge strength type throw-away tip has a nose radius to increase the strength of the cutting edge and prevent damage to the primary boundary.
Section and straight section of cutting edge have parallel lands, and R honing is 0.
It is large with a size of 08 to 0.1 mm or more.
「考案が解決しようとする課題」 低抵抗型スローアウェイチップでは、刃先強度が弱い
ため、片肉の切込み量1.5mm以上では欠損を生じ易く、
またノーズＲ部にも平行ランドがないため、切削速度20
0m/min以上では先端部がつぶれ易い。"Problems to be solved by the device" Low-resistance indexable inserts have weak cutting edge strength, so chipping is likely to occur when the cutting depth of one piece is 1.5 mm or more,
Also, since there is no parallel land in the nose R part, the cutting speed is 20
At 0 m / min or more, the tip is easily crushed.
一方、切刃強度アップ型スローアウェイチップでは、
切削抵抗が大きいため、磨耗の進行が早く、その磨耗の
進行によってさらに抵抗が増し、トータル的には刃先の
欠損につながっている。On the other hand, with the throw-away insert with increased cutting edge strength,
Since the cutting resistance is large, the progress of wear is fast, and the progress of wear further increases the resistance, leading to a total loss of the cutting edge.
「課題を解決するための手段」 そこで、本考案は上記の事情に鑑み、低抵抗型スロー
アウェイチップの特徴である切削抵抗の減少と、その
上、切刃強度アップ型スローアウェイチップの特徴であ
る強い強度との両者の特徴を兼ね備えたスローアウェイ
チップを開発すべく、多角板形状をなし、その頂角部分
にノーズＲ部とノーズＲ部に切刃直線部を連ねてなるス
ローアウェイチップにおいて、ノーズＲ部と切刃直線部
以外の連続部の外縁に平行ランドを設け、ノーズＲ部終
端から切刃直線部に向けて10〜20°の大きい切刃すくい
角を形成して一次境界に相当する切刃をフラットに形成
した構造である。[Means for Solving the Problems] Therefore, in view of the above circumstances, the present invention aims to reduce the cutting resistance, which is a feature of the low resistance type throw-away tip, and, in addition, to improve the cutting edge strength type throw-away tip. In order to develop a throw-away tip that combines both features of a certain strength, a throw-away tip that has a polygonal plate shape and has a nose R part at its apex and a cutting edge straight part connected to the nose R part. , A parallel land is provided on the outer edge of the continuous part other than the nose R part and the cutting edge straight part, and a large cutting edge rake angle of 10 to 20 ° is formed from the end of the nose R part toward the cutting edge straight part to form the primary boundary. This is a structure in which the corresponding cutting edge is formed flat.
「作用」 本考案では、切刃直線部に平行ランドを設けないこと
により切削抵抗を軽減し、かつノーズＲ部の平行ランド
によっては先端つぶれを防止し、切削直線部以外の連続
部の外縁に平行ランドを設けることによって切刃以外の
欠損およびウラカケをそれぞれ防止できる。[Operation] In the present invention, cutting resistance is reduced by not providing parallel lands on the cutting blade straight part, and tip crushing is prevented by parallel lands on the nose R part, and the outer edge of the continuous part other than the cutting straight part is prevented. By providing the parallel lands, it is possible to prevent chipping and back chipping other than the cutting edge.
また、本考案では、切刃すくい角を大きくとることに
より切削抵抗を軽減すると共に、切刃の斜部の終端部を
できるだけノーズＲ部に近づけることができるため、一
次境界の切刃がフラットとなり、切り込みの範囲が広く
なる。Further, in the present invention, the cutting resistance is reduced by increasing the rake angle of the cutting edge, and the end portion of the oblique portion of the cutting edge can be brought as close as possible to the nose radius part, so that the cutting edge at the primary boundary becomes flat. , The range of the cut becomes wider.
さらに、ブレーカすくい角を大きくすることにより、
すくい面のアグレッシブ磨耗および溶着を軽減すること
ができる。その上、ブレーカすくい角と立ち上がり角と
を大きくゆるやかな円滑面で連設することにより、切屑
の流れがスムースになる。Furthermore, by increasing the breaker rake angle,
Aggressive wear and welding of the rake face can be reduced. In addition, the breaker rake angle and the rising angle are connected continuously with a large and smooth surface, so that the flow of chips becomes smooth.
「実施例」 本考案を添付する図面に示す具体的実施例に基づいて
以下詳細に説明する。[Examples] The present invention will be described in detail below based on specific examples shown in the accompanying drawings.
第１図にその全体の平面図を示し、第２図は第１図の
側面図であり、第３図は要部拡大平面図で、第４図は第
３図の側面図である。FIG. 1 is a plan view of the whole, FIG. 2 is a side view of FIG. 1, FIG. 3 is an enlarged plan view of an essential part, and FIG. 4 is a side view of FIG.
このスローアウェイチップ11は、菱形板形状をなし、
その頂角部分にノーズＲ部１とノーズＲ部１に切刃直線
部２を連ね、中央にはボルトによりホルダーに螺締する
ための通孔12が穿設してある。本実施例では対角の二頂
角部分に切刃を設け、他の対角の二頂角部分には切刃を
設けてないが、四頂角ともに切刃を設けるのは自由であ
り、また、本実施例でも表裏の両面に切刃が形成してあ
る。This throw-away tip 11 has a diamond plate shape,
A nose R portion 1 and a straight cutting edge portion 2 are connected to the nose R portion 1 at the apex angle portion thereof, and a through hole 12 for screwing into the holder with a bolt is formed at the center. In the present embodiment, a cutting blade is provided on the diagonal dihedral angle portion, and no cutting blade is provided on the other diagonal dihedral angle portions, but it is free to provide a cutting blade on all four vertices, Also in this embodiment, cutting edges are formed on both front and back surfaces.
このスローアウェイチップ11のノーズＲ部１に最大幅
0.5mmの平行ランド13を設け、その平行ランド13は切刃
直線部２に近づくにしたがって狭くなり切刃直線部２で
は零となる。The maximum width of the nose R part 1 of this throw-away tip 11
A 0.5 mm parallel land 13 is provided, and the parallel land 13 becomes narrower as it approaches the cutting edge straight line portion 2 and becomes zero at the cutting edge straight line portion 2.
第３図のノーズＲ部１のＶ−Ｖ部の断面を第５図に示
すように、ノーズＲ部１には外縁に平行ランド13を形成
し、平行ランド13の内側の終端から、15〜25°のブレー
カすくい角４を設け、ブレーカすくい角４に30〜45°の
立ち上がり角５を連ね、ブレーカすくい角４と立ち上が
り角５を１〜3mmの大きな半径Ｒで滑らかに接続する円
弧面17を形成する。As shown in FIG. 5 which is a cross section of the V-V portion of the nose R portion 1 of FIG. 3, a parallel land 13 is formed on the outer edge of the nose R portion 1, and 15 to 15 A breaker rake angle 4 of 25 ° is provided, a breaker rake angle 4 is connected with a rising angle 5 of 30 to 45 °, and an arc surface 17 that smoothly connects the breaker rake angle 4 and the rising angle 5 with a large radius R of 1 to 3 mm 17 To form.
切刃直線部２の断面形状は、第３図の切刃直線部２の
VI−VI部、VII−VII部の断面である第６図、第７図に示
すように、平行ランドは設けてない。The cross-sectional shape of the cutting blade linear portion 2 is similar to that of the cutting blade linear portion 2 in FIG.
Parallel lands are not provided as shown in FIGS. 6 and 7 which are cross sections of the VI-VI portion and the VII-VII portion.
第８図は、第３図のVIII−VIII部の切刃直線部２に連
なる接続部14の断面であるが平行ランド15がノーズＲ部
１と切刃直線部２を除いた全周にわたり設けてある。FIG. 8 is a cross section of the connecting portion 14 connected to the cutting blade straight line portion 2 of the VIII-VIII portion of FIG. 3, but the parallel land 15 is provided over the entire circumference excluding the nose R portion 1 and the cutting blade straight line portion 2. There is.
また、第３図のIX−IX部の断面を第９図に示す。 FIG. 9 shows a cross section taken along line IX-IX in FIG.
次に、第３図の側面を示す第４図により切刃すくい角
について述べる。Next, the rake angle of the cutting edge will be described with reference to FIG. 4 showing the side surface of FIG.
ノーズＲ部１の終端から接続部14に向けて10〜20°、
好ましくは16°の大きい切刃すくい角16を形成し、切刃
すくい角16の終端はノーズＲ部１より0.1〜0.15mm程度
下がり、この切刃すくい角16終端に連なる切刃直線部２
および接続部14は、ノーズＲ部１終端と同様に0.1〜0.1
5mm程度下がって形成してある。切刃すくい角16終端に
連なる切刃直線部２および連続部14は、その上端が側面
から見て一直線に形成された平面である。切刃すくい角
16を大きく設定してあるため、ノーズＲ部１終端より接
続部14に僅かばかりの距離ｌ（第４図参照）で切刃直線
部２は、その上端が側面から見て一直線の平面に形成さ
れている。10 to 20 ° from the end of the nose R part 1 toward the connection part 14,
Preferably, a large cutting edge rake angle 16 of 16 ° is formed, and the end of the cutting edge rake angle 16 is lowered by about 0.1 to 0.15 mm from the nose R portion 1, and the cutting edge straight line portion 2 connected to the end of this cutting edge rake angle 16 is formed.
And the connecting portion 14 is 0.1 to 0.1 like the end of the nose R portion 1.
It is formed down about 5 mm. The cutting blade straight line portion 2 and the continuous portion 14 which are continuous with the end of the cutting blade rake angle 16 are flat surfaces whose upper ends are formed in a straight line when viewed from the side. Cutting edge rake angle
Since 16 is set to a large value, the cutting blade straight line portion 2 is formed in a flat plane when the upper end is viewed from the side surface at a slight distance l (see FIG. 4) from the end of the nose R portion 1 to the connection portion 14. Has been done.
ところで、特にステンレス鋼の切削では加工硬化が生
じ表面が硬化する。第10図に示すように、丸棒ステンレ
ス鋼材26の表面を切削加工し、再びその表面27を切削加
工する際、その表面27のスローアウェイチップ21の対応
する箇所、すなわち、スローアウェイチップ21の切込み
境界に相当する箇所を一次境界28といい、著しい磨耗が
生じ、欠損に至る場合が多い。このスローアウェイチッ
プ21ではノーズＲ部１より僅かばかりの距離で切刃直線
部２がその上端が一直線の平面に形成してあるため、被
削材である丸棒ステンレス鋼材26の加工硬化を極小にす
ることができる。By the way, especially when cutting stainless steel, work hardening occurs and the surface hardens. As shown in FIG. 10, the surface of the round bar stainless steel material 26 is cut, and when the surface 27 is cut again, the corresponding position of the throw-away tip 21 of the surface 27, that is, the throw-away tip 21 A portion corresponding to the cut boundary is called a primary boundary 28, and it is often worn to cause a defect. In this throw-away tip 21, the cutting blade straight line portion 2 is formed in a flat plane with its upper end aligned at a slight distance from the nose R portion 1. Therefore, the work hardening of the round bar stainless steel material 26 which is the work material is minimized. Can be
「考案の効果」 本考案は、上述のように、多角板形状をなし、その頂
角部分にノーズＲ部とノーズＲ部に切刃直線部を連ねて
なるスローアウェイチップにおいて、ノーズＲ部と切刃
直線部以外の連続部の外縁に平行ランドを設け、一方、
切刃直線部にはノーズＲ部終端から切刃直線部に向けて
10〜20°の大きい切刃すくい角を形成して一次境界に相
当する切刃をフラットに形成したスローアウェイチップ
であり、ノーズＲ部と切刃直線部以外の連続部の外縁に
平行ランドを設け、一方、切刃直線部には平行ランドを
設けないように構成したため、切削抵抗が軽減され、発
熱をおさえ磨耗の進行を抑制できる。[Advantage of the Invention] As described above, the present invention is a polygonal plate shape, and in the throw-away tip in which the nose R part is connected to the apex angle part and the cutting blade straight part is connected to the nose R part, the nose R part Parallel lands are provided on the outer edge of the continuous part other than the straight part of the cutting edge, while
For the straight part of the cutting edge, from the end of the nose R part to the straight part of the cutting edge
It is a throw-away tip with a large cutting edge rake angle of 10 to 20 ° and a flat cutting edge corresponding to the primary boundary, with parallel lands on the outer edge of the nose R part and the continuous part other than the cutting blade straight part. On the other hand, since the parallel land is not provided on the straight portion of the cutting edge, cutting resistance is reduced, heat generation is suppressed, and progress of wear can be suppressed.
また、本考案では、ノーズＲ部終端から切刃直線部に
向けて10〜20°の大きい切刃すくい角を形成して一次境
界面に相当する切刃をフラットに形成したため、被削材
の硬化を極小にすることができ、特に被削材がステンレ
ス鋼材であるときは有効である。Further, in the present invention, since a large cutting edge rake angle of 10 to 20 ° is formed from the end of the nose R portion toward the straight portion of the cutting edge and the cutting edge corresponding to the primary boundary surface is formed flat, the work material Hardening can be minimized, and it is particularly effective when the work material is stainless steel.
本考案では、ノーズＲ部に平行ランドを設けたことに
より先端つぶれを防止できる。In the present invention, the tip crush can be prevented by providing the parallel land on the nose R portion.
さらに、切刃直線部以外の外周に平行ランドを設けた
ことにより、切刃以外欠損およびウラカケを防止でき
る。Further, by providing the parallel lands on the outer periphery other than the straight portion of the cutting edge, it is possible to prevent chipping and backing other than the cutting edge.
その上、本考案ではチップの一次境界部の切刃はフラ
ットに形成してあるため損傷を極小にすることができ
る。Moreover, in the present invention, the cutting edge at the primary boundary portion of the chip is formed flat so that damage can be minimized.
第１図は本考案の具体的一実施例の全体の平面図、第２
図は第１図の側面図、第３図は要部拡大平面図、第４図
は第３図の側面図、第５図は第３図のノーズＲ部のＶ−
Ｖ断面図、第６図は第３図の切刃直線部のVI−VI断面
図、第７図は第３図の切刃直線部のVII−VII断面図、第
８図は切刃直線部に連なる接続部の第３図におけるVIII
−VIII部断面図、第９図は第３図のIX−IX部の断面図、
第10図はスローアウェイチップで丸棒ステンレス鋼材を
切削する状態を示す縦断面図、第11図は従来のスローア
ウェイチップを説明する平面図、第12図は第11図の要部
の縦断面図である。 １…ノーズＲ部 ２…切刃直線部 14…連続部 13・15…平行ランド部 16…切刃すくい角 28…一次境界FIG. 1 is an overall plan view of a specific embodiment of the present invention, and FIG.
1 is a side view of FIG. 1, FIG. 3 is an enlarged plan view of an essential part, FIG. 4 is a side view of FIG. 3, and FIG. 5 is a V-of the nose R part of FIG.
V sectional view, FIG. 6 is a VI-VI sectional view of the cutting blade linear portion of FIG. 3, FIG. 7 is a VII-VII sectional view of the cutting blade linear portion of FIG. 3, and FIG. 8 is a cutting blade linear portion. VIII in Fig. 3 of the connection part connected to
-VIII sectional view, FIG. 9 is a sectional view of IX-IX portion of FIG. 3,
FIG. 10 is a vertical cross-sectional view showing a state in which a round rod stainless steel material is cut by a throw-away tip, FIG. 11 is a plan view illustrating a conventional throw-away tip, and FIG. 12 is a vertical cross-section of a main part of FIG. It is a figure. 1 ... Nose R part 2 ... Cutting edge straight line part 14 ... Continuous part 13.15 ... Parallel land part 16 ... Cutting edge rake angle 28 ... Primary boundary
Claims (1)
Ｒ部とノーズＲ部に切刃直線部を連ねてなるスローアウ
ェイチップにおいて、ノーズＲ部と切刃直線部以外の連
続部の外縁に平行ランドを設け、一方、切刃直線部には
ノーズＲ部終端から切刃直線部に向けて10〜20°の大き
い切刃すくい角を形成して一次境界に相当する切刃をフ
ラットに形成したことを特徴とするスローアウェイチッ
プ。1. A throw-away tip having a polygonal plate shape in which a nose R portion and a nose R portion are connected to a cutting blade straight line portion, and a continuous portion other than the nose R portion and the cutting blade straight line portion is formed. A parallel land is provided on the outer edge. On the other hand, a large cutting edge rake angle of 10 to 20 ° is formed from the nose R end to the cutting edge straight section on the cutting edge straight section to flatten the cutting edge corresponding to the primary boundary. A throw-away tip characterized by being formed in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11176990U JP2520884Y2 (en) | 1990-10-24 | 1990-10-24 | Throw-away tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11176990U JP2520884Y2 (en) | 1990-10-24 | 1990-10-24 | Throw-away tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0470406U JPH0470406U (en) | 1992-06-22 |
| JP2520884Y2 true JP2520884Y2 (en) | 1996-12-18 |
Family
ID=31859246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11176990U Expired - Fee Related JP2520884Y2 (en) | 1990-10-24 | 1990-10-24 | Throw-away tip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520884Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5887859B2 (en) * | 2011-11-18 | 2016-03-16 | 三菱マテリアル株式会社 | Cutting insert |
| WO2016043127A1 (en) * | 2014-09-16 | 2016-03-24 | 住友電気工業株式会社 | Cutting insert and manufacturing method therefor |
-
1990
- 1990-10-24 JP JP11176990U patent/JP2520884Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0470406U (en) | 1992-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2244854C (en) | A cutting insert with a rounded corner | |
| JP3317089B2 (en) | Indexable inserts and indexable cutters | |
| JPH0621605Y2 (en) | Throw-away drilling tool | |
| JP4520045B2 (en) | Cutting insert for turning | |
| JPH0426165Y2 (en) | ||
| JP2004291099A (en) | Throw-away end mill | |
| JP2520884Y2 (en) | Throw-away tip | |
| JPH065041Y2 (en) | Throwaway tip | |
| JPH11138324A (en) | Milling cutter | |
| JPS5937165B2 (en) | Throwaway tip | |
| JP2557569B2 (en) | Throw-away tip | |
| JPS6232724Y2 (en) | ||
| JP3754920B2 (en) | Throwaway end mill | |
| JPS6012645Y2 (en) | Throwaway tip | |
| JP3211431B2 (en) | Indexable tip | |
| JPH0253502A (en) | Throwaway type cutter and throwaway tip | |
| JPH10180519A (en) | Throw-away tip | |
| JP2584176Y2 (en) | Indexable tip | |
| CN218693967U (en) | But be applied to cast iron processing's transposition two-sided turning blade | |
| JPH0463613A (en) | Throw-away chip | |
| JP3260984B2 (en) | Cutting insert with Sarae blade for milling | |
| JPH0727050Y2 (en) | Rotary tool | |
| JPS6013763B2 (en) | cutter | |
| JP2739399B2 (en) | Indexable tip | |
| JP2556384Y2 (en) | Indexable tip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |