JPS61219511A - Throwaway tip - Google Patents
Throwaway tipInfo
- Publication number
- JPS61219511A JPS61219511A JP6259885A JP6259885A JPS61219511A JP S61219511 A JPS61219511 A JP S61219511A JP 6259885 A JP6259885 A JP 6259885A JP 6259885 A JP6259885 A JP 6259885A JP S61219511 A JPS61219511 A JP S61219511A
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- tip
- angle
- cutting
- forming
- 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
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
- B23B2200/20—Top or side views of the cutting edge
- B23B2200/202—Top or side views of the cutting edge with curved cutting edge
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
この発明はスローアウェイチップの切刃形状の改良に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to an improvement in the cutting edge shape of an indexable insert.
(従来技術)
従来、スローアウェイチップどして四角形の板状体の四
辺の稜線に鋭角の刃先角の切刃が形成されたものが広く
使用されている。これは四辺の切刃を順次使用し、各切
刃がすべて摩耗すれば捨てるようにしている。このスロ
ーアウェイチップはすくい角がプラスであるために所要
馬力し小さく、切れ味は良いが、切削速度または送り速
度を少し高めると、刃先が欠損しやすく、j、 7.:
がつC非常に寿命が短いという欠点がある。刃先角を9
0゜以上にすれば刃先の強度を向上さ」ジることはでき
るが、所要馬力が大きくなって剛性の高い、大型の機械
が必要となるという欠点がある。(Prior Art) Conventionally, indexable inserts in which cutting edges with acute cutting edge angles are formed on the four ridge lines of a rectangular plate-like body have been widely used. This uses the cutting edges on all four sides in sequence, and discards each cutting edge when they are all worn out. Since this indexable insert has a positive rake angle, the required horsepower is small and the cutting quality is good, but if the cutting speed or feed rate is slightly increased, the cutting edge is likely to break. :
GatsuC has the disadvantage of having a very short lifespan. Cutting edge angle to 9
If the angle is greater than 0°, the strength of the cutting edge can be improved, but the disadvantage is that the required horsepower increases and a large, highly rigid machine is required.
(発明の目的)
この発明はこのような従来の欠点を解8!i ’jるた
めになされたものであり、チップの切刃の刃先角は鋭角
にしたままで、切刃の欠損が生じないようにし、これに
よって優れた切削性を右し゛つつ寿命を著しく向上さけ
たスローアウェイチップを提供するものである。(Objective of the invention) This invention solves these conventional drawbacks! The cutting edge angle of the insert remains at an acute angle to prevent chipping of the cutting edge, thereby providing excellent cutting performance and significantly extending the tool life. It offers throwaway chips.
(発明の構成)
この発明は、円形または多角形の板状体であって、その
表面と周面との交差部稜線に切刃が形成されているチッ
プにおいて、上記チップ表面は球面または円錐面の一部
をなす凸曲面に形成され、かつ切刃の刃先角は鋭角に形
成されているものである。このように、切刃を形成する
チップ表面を凸曲面にすることにより、実質上刃先角を
増大させるとともに切刃を湾曲させ、かつ切刃を被剛材
に対して徐々に当接させるようにし、これにJ:って高
速切削を行っても切刃の欠損が生じないようにした。も
のである。(Structure of the Invention) The present invention provides a chip that is a circular or polygonal plate-like body and has a cutting edge formed at the intersection ridgeline between the surface and the circumferential surface, and the chip surface has a spherical or conical surface. It is formed into a convex curved surface forming a part of the cutting edge, and the cutting edge angle of the cutting edge is formed at an acute angle. In this way, by making the tip surface that forms the cutting edge a convex curve, the cutting edge angle is substantially increased, the cutting edge is curved, and the cutting edge is gradually brought into contact with the rigid material. , and J: to prevent chipping of the cutting edge even when high-speed cutting is performed. It is something.
(実施例)
第1図〜第3図においで、チップ1は四角形の板状体で
あって、その表面2と周面3との交差部稜線に切刃4が
形成されている。上記チップ1の表面2は球面の一部を
なす凸曲面に形成され、基準となる(素材として用いる
)板材の辺21,2゜2.23.24によって形成され
る平面に中央部で接し、周辺において周面3と交差する
稜線で形成される切刃4は球面の一部をなす円弧曲線と
なっている。そしてデツプ1の各辺の中央部における切
刃4の刃先角θは、第3図に示すにうに刃先部における
接線6ど逃げ面となる周面3とのなす角で示され、この
角度が鋭角になるように設定されている。(Example) In FIGS. 1 to 3, the tip 1 is a rectangular plate-like body, and a cutting edge 4 is formed at the ridgeline of the intersection between the surface 2 and the circumferential surface 3. The surface 2 of the chip 1 is formed into a convex curved surface forming a part of a spherical surface, and touches a plane formed by sides 21, 2° 2.23.24 of a plate material serving as a reference (used as a raw material) at the center, The cutting edge 4, which is formed by a ridgeline that intersects with the circumferential surface 3 at the periphery, is an arcuate curve that forms part of a spherical surface. The cutting edge angle θ of the cutting edge 4 at the center of each side of the depth 1 is shown in FIG. It is set to have an acute angle.
上記実施例で1五四角形(底面20の形状が正方形)の
デツプ1を示したが、チップの形状はそれ以外の多角形
でもに<、あるいは円形であってもよい。In the above embodiment, the depth 1 is five square (the shape of the bottom surface 20 is a square), but the shape of the chip may be any other polygon, or circular.
上記チップ1は、例えば第4図および第5図に示すよう
に通常のチップと同様にカッタ本体9に対して埠宜の固
定手段によって取付けられる。18はカッタ本体9の回
転中心から放射状に伸びる線、19はカッタ本体9に形
成されたチップポケットである。The tip 1 is attached to the cutter body 9 by means of fixing means, as shown in FIGS. 4 and 5, for example, in the same way as a normal tip. 18 is a line extending radially from the center of rotation of the cutter body 9, and 19 is a chip pocket formed in the cutter body 9.
第5図において矢印方向にカッタ本体9を回転させて上
記チップ1により切削を行うと、湾曲した切刃4は被削
材5に対して徐々に当1i1jLで切削を行うことにな
る。すなわち、直線的な切刃と異なり被剛材に対して同
時に当接することはなく、徐々に当接することになるた
め、被剛材によって衝撃的な荷重を受けることがない。When the cutter main body 9 is rotated in the direction of the arrow in FIG. 5 and cutting is performed using the tip 1, the curved cutting edge 4 gradually cuts the workpiece 5 at an angle of 1i1jL. That is, unlike a straight cutting blade, the cutting blade does not contact the rigid material at the same time, but gradually contacts the rigid material, so that the cutting blade does not receive an impact load from the rigid material.
また第5図に示されるように切刃4の内側(カッタ本体
9の中心側)から徐々に被剛材に対して当接して切削を
行うために切屑は徐々に外方に押され、しかも切刃4が
湾曲しているために切屑も湾曲し□て外方に押出され、
切刃4に切屑が圧着するのが防止さ糺る。このように□
切削中に切□屑が切刃から順次剥がされるようにすると
、切刃に□加えられる荷重も□減少□して、切削性が向
−卜する□“とと苔に、欠損も生じにくくなる。
゛
さらにすくい面(表面2)が湾曲しているために、刃先
部が強化されて欠損が生じる′のが防止されている□。Furthermore, as shown in FIG. 5, the cutting blade 4 gradually comes into contact with the rigid material from the inside (center side of the cutter body 9) and cuts, so the chips are gradually pushed outward. Since the cutting edge 4 is curved, the chips are also curved and pushed outward.
This prevents chips from being crimped onto the cutting blade 4. Like this□
If chips are gradually removed from the cutting edge during cutting, the load applied to the cutting edge will also be reduced, improving machinability and making it less likely that chips will occur. .
``Furthermore, since the rake face (surface 2) is curved, the cutting edge is strengthened and chipping is prevented''□.
すなわち、通常の平面のすくい面の場合にはずくし4面
60は第31に示すようになって゛切刃40の刃先角α
は小さくなり、刃□先部6肉の簿い部分が強度が弱いた
めにその部分で欠損が生じ易いが、すくい面2が湾曲し
ている場合にはすくい面の傾斜は実質上同じとして刃先
角゛θが大幅に増大して刃先の弾痕が増大する。す′八
わ砥、□すくい面を湾曲面にするど、讐りい角を実質上
増大させずに、欠損の生じ易い゛刃先先端の肉の薄い部
分を生じさせないために刃先部の強iパ向上することに
なる。そして上記のように被繭材に対し□て徐々に当接
することと相俟−′等欠損が生じにくくなり、チップの
寿命が増大することになる。That is, in the case of a normal flat rake face, the four rake surfaces 60 are as shown in No. 31, and the cutting edge angle α of the cutting edge 40 is
becomes smaller, and the weaker part of the tip 6 is weak in strength, making it easy to break.However, if the rake face 2 is curved, the slope of the rake face is assumed to be essentially the same, and the cutting edge The angle ゛θ increases significantly and the number of bullet holes on the cutting edge increases. □By making the rake surface a curved surface, the cutting edge is strengthened to prevent a thin part at the tip of the cutting edge, which is prone to chipping, without substantially increasing the cutting edge angle. This will improve performance. In combination with the gradual contact with the material to be cocooned as described above, defects such as -' are less likely to occur, and the life of the chip is increased.
なお、上記実施例ではチップの表面を球面にした例のみ
を示したが、球面の代りに円錐面としてもよく、その場
合も作用効果は上記のものとほぼ同様である。In the above embodiment, only an example in which the surface of the chip is spherical is shown, but it may be a conical surface instead of a spherical surface, and in that case, the effect is almost the same as that described above.
(発−の効果)
以上説明したように、この発明は円形または多角形あ板
状体であって、その表面と周面との交差部稜線に切刃が
形成されているチップにおいてJその表面を凸曲面に形
成し、かつ切刃の刃先角を鋭角に形成したものであり、
チップの切刃の刃先角は鋭角にしたままで、切刃の欠損
が生じないように□し、これに韮って優れた切削性を有
しつつ寿命を著しく向上させたものである。(Effect of firing) As explained above, the present invention is a circular or polygonal plate-like body, and in a chip in which a cutting edge is formed at the ridgeline at the intersection of the surface and the circumferential surface, the surface of the J. is formed into a convex curved surface, and the cutting edge is formed at an acute angle,
The tip angle of the cutting edge of the chip remains acute to prevent chipping of the cutting edge, and the life of the chip is significantly improved while providing excellent cutting performance.
【図面の簡単な説明】
第1−はこの発明の実施例を示す斜視図、第2図はその
側面図、−3図は刃先部の拡大断面図、第4図はチップ
をカッタ本体に取付けた状態の断面図、第5図はその斜
視図である。
1・・・iツブ、2・・・表面、3・・・周面、4・・
・切刃、−〇 −
θ・・・刃先角。[Brief Description of the Drawings] Fig. 1- is a perspective view showing an embodiment of the present invention, Fig. 2 is a side view thereof, Fig. -3 is an enlarged sectional view of the cutting edge, and Fig. 4 shows the tip attached to the cutter body. FIG. 5 is a cross-sectional view of the state shown in FIG. 1...i-tube, 2...surface, 3...peripheral surface, 4...
・Cutting edge, −〇 − θ...Blade angle.
Claims (1)
面との交差部稜線に切刃が形成されているチップにおい
て、上記チップ表面は球面または円錐面の一部をなす凸
曲面に形成され、かつ切刃の刃先角は鋭角に形成されて
いることを特徴とするスローアウェイチップ。1. In a chip that is a circular or polygonal plate-like body and has a cutting edge formed at the intersection ridgeline of the surface and the peripheral surface, the chip surface is a convex curved surface that forms part of a spherical or conical surface. A throw-away insert characterized in that the cutting edge is formed at an acute angle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6259885A JPS61219511A (en) | 1985-03-27 | 1985-03-27 | Throwaway tip |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6259885A JPS61219511A (en) | 1985-03-27 | 1985-03-27 | Throwaway tip |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61219511A true JPS61219511A (en) | 1986-09-29 |
Family
ID=13204922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6259885A Pending JPS61219511A (en) | 1985-03-27 | 1985-03-27 | Throwaway tip |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61219511A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6357114A (en) * | 1986-05-26 | 1988-03-11 | Toshiaki Hosoi | Throwaway tip |
EP0620071A1 (en) * | 1993-03-12 | 1994-10-19 | VALENITE Inc. | Improved cutting tool and insert therefor |
WO2009034633A1 (en) * | 2007-09-13 | 2009-03-19 | Tungaloy Corporation | Throw-away tip for radius cutter and throw-away radius cutter having the same |
WO2015029440A1 (en) * | 2013-08-30 | 2015-03-05 | 兼房株式会社 | Spare cutter blade and cutter |
US10328495B2 (en) * | 2016-04-27 | 2019-06-25 | Sumitomo Electric Hardmetal Corp. | Cutting tool |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3279034A (en) * | 1964-12-17 | 1966-10-18 | Ingersoll Milling Machine Co | Indexable cutter blade |
JPS6031912B2 (en) * | 1978-03-01 | 1985-07-25 | 荏原インフイルコ株式会社 | Electrolysis method and device |
-
1985
- 1985-03-27 JP JP6259885A patent/JPS61219511A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3279034A (en) * | 1964-12-17 | 1966-10-18 | Ingersoll Milling Machine Co | Indexable cutter blade |
JPS6031912B2 (en) * | 1978-03-01 | 1985-07-25 | 荏原インフイルコ株式会社 | Electrolysis method and device |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6357114A (en) * | 1986-05-26 | 1988-03-11 | Toshiaki Hosoi | Throwaway tip |
EP0620071A1 (en) * | 1993-03-12 | 1994-10-19 | VALENITE Inc. | Improved cutting tool and insert therefor |
WO2009034633A1 (en) * | 2007-09-13 | 2009-03-19 | Tungaloy Corporation | Throw-away tip for radius cutter and throw-away radius cutter having the same |
US7815402B2 (en) | 2007-09-13 | 2010-10-19 | Tunalogy Corporation | Cutting insert for radius cutter and indexable-insert radius cutter fitted with the same |
JPWO2009034633A1 (en) * | 2007-09-13 | 2010-12-16 | 株式会社タンガロイ | Throw-away tip for radius cutter, and throw-away type radius cutter equipped with the tip |
KR101184162B1 (en) | 2007-09-13 | 2012-09-18 | 오에스지 가부시키가이샤 | Throw-away tip for radius cutter and throw-away radius cutter having the same |
WO2015029440A1 (en) * | 2013-08-30 | 2015-03-05 | 兼房株式会社 | Spare cutter blade and cutter |
JPWO2015029440A1 (en) * | 2013-08-30 | 2017-03-02 | 兼房株式会社 | Cutter replacement blade and cutter |
US10328495B2 (en) * | 2016-04-27 | 2019-06-25 | Sumitomo Electric Hardmetal Corp. | Cutting tool |
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