JPH05253725A - End mill - Google Patents
End millInfo
- Publication number
- JPH05253725A JPH05253725A JP8631292A JP8631292A JPH05253725A JP H05253725 A JPH05253725 A JP H05253725A JP 8631292 A JP8631292 A JP 8631292A JP 8631292 A JP8631292 A JP 8631292A JP H05253725 A JPH05253725 A JP H05253725A
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- cutting
- blade
- cutter
- end mill
- 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
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はフライス盤やマシニング
センター等の工作機械に用い、主にアルミ材等の軽切削
加工に用いるエンドミルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end mill used for a machine tool such as a milling machine or a machining center and mainly used for light cutting of an aluminum material or the like.
【０００２】[0002]
【従来の技術】金属材料の中でもアルミおよびその合金
のような軟質金属材料は被削性が一般に良好であるた
め、これを切削するエンドミルはすくい角およびにげ角
を大きくして切れ刃を鋭利にするとともに、刃溝を広く
または深く設けることにより切削性を高め、切り屑排除
の便宜を与えた設計が一般的であり、公知の事柄であ
る。2. Description of the Related Art Among metal materials, soft metal materials such as aluminum and its alloys generally have good machinability. Therefore, an end mill for cutting the metal has a large rake angle and a sharp angle to sharpen a cutting edge. In addition, it is a general and well-known matter to design the blade groove widely or deeply to improve the machinability and to provide the convenience of removing chips.
【０００３】[0003]
【発明が解決しようとする問題点】しかしながら、アル
ミ材のような軟質金属材は切削中にエンドミルの切れ刃
に溶着し易い。とくにすくい面から刃溝に続く部分の溶
着は切り屑の流れを悪くし、最終的に刃溝部分に切り屑
が詰まり切削不能となっていた。これは、工具切れ刃の
摩耗進行による寿命に至る前に起こり、工具寿命が短
く、かつそのバラツキが大きく、工具交換時期を逸する
場合が多かった。However, a soft metal material such as an aluminum material is easily welded to the cutting edge of the end mill during cutting. In particular, the welding of the portion from the rake face to the blade groove deteriorated the flow of chips, and eventually the blade groove portion was clogged with chips, making it impossible to cut. This occurs before the tool cutting edge reaches the end of its service life due to wear, has a short tool life, and its variations are large, often leading to a delay in tool replacement.
【０００４】[0004]
【本発明の目的】本発明は以上の欠点をなくし、主にア
ルミ材等の軽切削加工に用いるエンドミルを提供しよう
とするものである。It is an object of the present invention to eliminate the above drawbacks and provide an end mill mainly used for light cutting of aluminum materials and the like.
【０００５】[0005]
【問題を解決するための手段】本発明は、上記の目的を
達成するために、外周切れ刃とエンド切れ刃を連続した
ブレード状にし、かつ該刃部の芯部に刃形の１０〜９０
％の間隙を有するという技術的手段を講じたものであ
る。さらに、刃径の５〜３０％の支柱を該間隙の軸線方
向において刃径の長さ毎に少なくとも１本以上有しても
良く、さらに該支柱をエンド切れ刃に対し、軸線方向に
−４５゜〜４５゜傾斜させて設け、工具剛性を加味する
という技術的手段を講じたものである。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a peripheral cutting edge and an end cutting edge formed into a continuous blade shape, and the core of the blade has a blade shape of 10 to 90.
It has taken the technical measure of having a gap of%. Further, at least one strut having 5 to 30% of the blade diameter may be provided for each length of the blade diameter in the axial direction of the gap, and the strut may be -45 in the axial direction with respect to the end cutting edge. It is provided by inclining at an angle of 45 ° to 45 °, and the technical means of taking tool rigidity into consideration is taken.
【０００６】[0006]
【作用】本発明を適用することにより、刃溝すなわち切
り屑が詰まる箇所を有しないため、切り屑詰まりによる
切削不能が皆無となった。また、湿式切削において、１
方向から切削油を供給しても外周切れ刃はもちろんのこ
と、エンド切れ刃まで十分切削油が行き渡り、一層の長
寿命化が画れた。さらに、刃溝を有しないために、すく
い面の幅が小さくなり、切り屑がすくい面に接触する部
分が減少し、必然的に切削抵抗が低減できた。By applying the present invention, since there is no blade groove, that is, a portion where chips are clogged, there is no cutting failure due to clogging of chips. In wet cutting, 1
Even if the cutting oil is supplied from the direction, not only the outer peripheral cutting edge but also the end cutting edge spreads the cutting oil sufficiently and the life is further extended. Further, since there is no blade groove, the width of the rake face is reduced, the portion where the chips contact the rake face is reduced, and the cutting resistance is inevitably reduced.
【０００７】なお、アルミ材等の軽切削加工においては
工具剛性を余り必要としないため、芯部の間隙により、
剛性不足になることは少ないが、切削条件等により、工
具剛性が必要な場合は、間隙に支柱を設けることによ
り、工具剛性が向上し、芯部の間隙との相乗効果によ
り、長寿命・高精度の加工が可能となった。Since the tool rigidity is not so required in the light cutting of aluminum material, etc., due to the gap of the core,
Rigidity is not likely to be insufficient, but if tool rigidity is required due to cutting conditions, etc., providing a strut in the gap improves tool rigidity, and due to the synergistic effect with the core gap, long life and high Precision processing has become possible.
【０００８】[0008]
【実施例】図１は本発明の一実施例である。刃径１０ｍ
ｍの２枚刃のエンドミルにおいて芯部に刃径の７０％す
なわち直径７ｍｍの間隙を有し、かつ該間隙に直径１ｍ
ｍの円筒状の支柱を設けたエンドミル軸線方向に対し、
７ｍｍ間隔でエンドミル軸直角に設けたものである。ま
た、図３には本発明の他の実施例を示し、エンド切れ刃
がボール形状を成す、ボールエンドミルの場合である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention. Blade diameter 10m
In a 2-blade end mill having a diameter of 70 m, the core has a gap of 70% of the blade diameter, that is, a diameter of 7 mm, and the gap has a diameter of 1 m.
In the direction of the axis of the end mill with m cylindrical columns,
It is provided at intervals of 7 mm and perpendicular to the axis of the end mill. Further, FIG. 3 shows another embodiment of the present invention, which is a case of a ball end mill in which the end cutting edge has a ball shape.
【０００９】[0009]
【発明の効果】以上のように本発明によれば、アルミ材
等の軽切削においてエンドミル長寿命化が可能となった
ばかりでなく、切削抵抗が低減することにより、高速切
削にも対応でき、高精度高能率の加工が可能となった。As described above, according to the present invention, not only is it possible to extend the life of the end mill in the light cutting of aluminum materials and the like, but also it is possible to cope with high-speed cutting by reducing the cutting resistance. Highly accurate and efficient machining is possible.
【図１】図１は本発明の一実施例の正面図を示す。FIG. 1 shows a front view of an embodiment of the present invention.
【図２】図２は図１の側面図である。FIG. 2 is a side view of FIG.
【図３】図３は従来製品の例を示し、その正面図を示
す。FIG. 3 shows an example of a conventional product, showing a front view thereof.
【図４】図４は図３の側面図である。FIG. 4 is a side view of FIG.
【図５】図５は本発明品の他の実施例を示し、その正面
図を示す。FIG. 5 shows another embodiment of the product of the present invention, showing a front view thereof.
【図６】図６は図５の側面図である。FIG. 6 is a side view of FIG.
１ 本体 ２ 外周切れ刃 ３ エンド切れ刃 ４ シャンク部 ５ 芯部 ６ 刃溝 1 Main body 2 Outer peripheral cutting edge 3 End cutting edge 4 Shank part 5 Core part 6 Blade groove
Claims (3)
作機械に用いるエンドミルにおいて、シャンク部から連
続する刃部の外周切れ刃とエンド切れ刃を連続したブレ
ード状にし、かつ該刃部の芯部に刃径の１０〜９０％の
間隙を有することを特徴とするエンドミル。1. In an end mill used for a machine tool such as a milling machine or a machining center, the outer peripheral cutting edge and the end cutting edge of the blade portion continuous from the shank portion are formed into a continuous blade shape, and the blade portion has a blade diameter of An end mill having a gap of 10 to 90%.
該間隙の軸線方向において刃径の長さ毎に少なくとも１
本有することを特徴とする請求項１記載のエンドミル。2. A strut having a core thickness of 5 to 30% of the blade diameter is provided at least for each length of the blade diameter in the axial direction of the gap.
The end mill according to claim 1, which has a book.
に−４５゜〜４５゜傾斜させて設けたことを特徴とする
請求項１ないし２記載のエンドミル。3. The end mill according to claim 1, wherein the support column is provided with an inclination of −45 ° to 45 ° in the axial direction with respect to the end cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8631292A JPH05253725A (en) | 1992-03-10 | 1992-03-10 | End mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8631292A JPH05253725A (en) | 1992-03-10 | 1992-03-10 | End mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05253725A true JPH05253725A (en) | 1993-10-05 |
Family
ID=13883323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8631292A Pending JPH05253725A (en) | 1992-03-10 | 1992-03-10 | End mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05253725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU648957B2 (en) * | 1990-11-21 | 1994-05-05 | Reynolds Metals Company | Sow mold and sow ingot |
-
1992
- 1992-03-10 JP JP8631292A patent/JPH05253725A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU648957B2 (en) * | 1990-11-21 | 1994-05-05 | Reynolds Metals Company | Sow mold and sow ingot |
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