JP2003285220A - End mill with oil hole - Google Patents

End mill with oil hole

Info

Publication number
JP2003285220A
JP2003285220A JP2002090855A JP2002090855A JP2003285220A JP 2003285220 A JP2003285220 A JP 2003285220A JP 2002090855 A JP2002090855 A JP 2002090855A JP 2002090855 A JP2002090855 A JP 2002090855A JP 2003285220 A JP2003285220 A JP 2003285220A
Authority
JP
Japan
Prior art keywords
oil hole
outer peripheral
end mill
oil
cutting edge
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.)
Withdrawn
Application number
JP2002090855A
Other languages
Japanese (ja)
Inventor
Hironori Kondou
浩教 近藤
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.)
Tungaloy Corp
Original Assignee
Toshiba Tungaloy Co Ltd
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 Toshiba Tungaloy Co Ltd filed Critical Toshiba Tungaloy Co Ltd
Priority to JP2002090855A priority Critical patent/JP2003285220A/en
Publication of JP2003285220A publication Critical patent/JP2003285220A/en
Withdrawn legal-status Critical Current

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  • Milling Processes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an end mill with an oil hole in which the oil hole opened on an outer peripheral flank along a helical tooth is provided by a simple manufacturing method. <P>SOLUTION: An oil groove 7 having the same helical angle as that of a helical tooth 5 is formed simultaneously with the extrusion molding of a round bar material. When a body 2 is ground and a cutting edge portion is formed in the next process, the body 2 is positioned so that a helical groove 8 opened on an outer peripheral flank 4 in a half split shape appears, and is ground. As a result, cutting liquid and air can be supplied in the vicinity of the cutting edge even using at a high rotational speed, and a chip discharging property and a cutting edge cooling effect are improved. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】この発明は、切削液やエアー
を内部供給するための油穴が備わる油穴付きエンドミル
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end mill with oil holes provided with oil holes for internally supplying cutting fluid and air.

【0002】[0002]

【従来の技術】エンドミルによる加工において、特に肩
削りや溝加工などの場合に、切削液やエアーを供給する
ことにより切屑の排除や刃先冷却を行うことは、工具寿
命の延長や加工精度の確保などのために重要である。給
油方法のなかで、外部給油方式はごく一般的な給油方法
であるが、高速回転時は遠心力によって切削液が飛散
し、刃先に十分供給されないという問題がある。
2. Description of the Related Art In machining with an end mill, especially in the case of shoulder milling or grooving, removing cutting chips and cooling the cutting edge by supplying cutting fluid or air is intended to extend tool life and secure machining accuracy. Is important for etc. Among the oil supply methods, the external oil supply method is a very common oil supply method, but there is a problem that the cutting fluid is scattered by the centrifugal force at the time of high speed rotation and is not sufficiently supplied to the cutting edge.

【0003】一方、切削工具内部に貫通させた油穴から
切削液などを供給する内部給油方式は、供給効果の点で
外部給油方式より優れており、従来よりさまざまな技術
が提案されている。代表的なものとしては、実開昭63
−44711号公報にみられるように、工具本体内を貫
通する油穴を先端面で開口させたものがある。また、深
さの深い肩削りや溝削りでは、効果がより高いことか
ら、ボデーの外周逃げ面に開口を設けることも行われ
る。この場合、中心部に軸線に沿って穿設した油穴から
さらに油穴を枝分かれさせるといった方法がとられる。
On the other hand, the internal oil supply system for supplying the cutting fluid or the like from the oil hole penetrating the inside of the cutting tool is superior to the external oil supply system in terms of the supply effect, and various techniques have been conventionally proposed. A typical example is Shokai Sho 63.
As disclosed in JP-A-44711, there is a tool body in which an oil hole penetrating the inside of the tool body is opened at the tip end surface. Further, since the effect is higher in the deeper shoulder milling and groove milling, an opening is also provided in the outer peripheral flank of the body. In this case, a method of further branching the oil hole from the oil hole formed along the axis at the central portion is adopted.

【0004】[0004]

【発明が解決しようとする課題】たとえば超硬合金製の
エンドミルの場合、外周逃げ面に開口を設けようとする
と、中心部の油穴から枝分かれする油穴を設ける方法
は、超硬素材が半焼結の段階で当該油穴の加工を行わな
ければならず、手間がかかってコスト高となる。このよ
うなことを無くすために、特開平5−253727号公
報には、切刃のねじれ角とは異なるねじれ角を有する油
穴を押し出し成形することにより、切刃部の研削加工に
伴ない、必然的に外周逃げ面に油穴の開口が現れるとい
う方法が開示されている。押し出しによる同時成形なの
でコスト高とはならないが、開口は1穴に限られるとい
う問題がある。そして、このような1穴の開口は、深さ
の深い肩削りや溝削りでは、加工深さ全長に渡る対応が
十分できている給油方式とはいえない。
For example, in the case of a cemented carbide end mill, when an opening is to be provided in the outer peripheral flank, an oil hole branched from the oil hole at the center is used. The oil hole must be processed at the stage of connection, which is time-consuming and costly. In order to eliminate such a problem, Japanese Patent Laid-Open No. 5-253727 discloses that an oil hole having a helix angle different from the helix angle of the cutting edge is extruded, so that the cutting edge portion is ground. A method is disclosed in which the opening of the oil hole necessarily appears on the outer peripheral flank. Since it is simultaneous molding by extrusion, the cost is not high, but there is a problem that the number of openings is limited to one. Further, such a one-hole opening cannot be said to be a lubrication system capable of sufficiently dealing with the entire working depth by shoulder cutting or grooving having a deep depth.

【0005】[0005]

【課題を解決するための手段】この発明は、上記のよう
な課題を解決するためになされたもので、請求項1は、
ボデーの外周部にねじれ刃が形成され、シャンクからボ
デーにかけて油穴が穿設されてなる油穴付きエンドミル
において、前記油穴は、前記ねじれ刃と同じねじれ角を
有し、ボデーの外周逃げ面において半割り状に開口する
ねじれ溝に形成されることを特徴とする。この方法は、
ねじれ刃の全長に渡って開口する外周部のねじれ溝を特
別な工程を加えることなく製作させるものである。
The present invention has been made to solve the above problems. Claim 1
In an end mill with an oil hole in which a spiral blade is formed on the outer peripheral portion of the body and an oil hole is drilled from the shank to the body, the oil hole has the same helix angle as the spiral blade, and the outer peripheral flank of the body It is characterized in that it is formed in a twist groove that opens in half. This method
It is possible to manufacture a spiral groove on the outer peripheral portion that opens over the entire length of the spiral blade without adding a special process.

【0006】また、請求項2は、ボデーの外周部にねじ
れ刃が形成され、シャンクからボデーにかけて油穴が穿
設されてなる油穴付きエンドミルにおいて、前記油穴
は、前記ねじれ刃と同じねじれ角を有し、ボデーの外周
逃げ面に付設される凹溝によって複数の開口が形成され
ることを特徴とする。この方法は、簡単な後工程を加え
るだけで、ねじれ刃の長さ方向の任意の外周部位置に、
複数の開口を形成させるものである。
According to a second aspect of the present invention, in an end mill with an oil hole in which a spiral blade is formed on the outer peripheral portion of the body and an oil hole is formed from the shank to the body, the oil hole has the same twist as the spiral blade. It is characterized in that a plurality of openings are formed by concave grooves having corners and provided on the outer peripheral flank of the body. This method, by adding a simple post-process, to the arbitrary outer peripheral position in the length direction of the helical blade,
A plurality of openings are formed.

【0007】[0007]

【発明の実施の形態】次に、この発明の実施の一形態に
ついて、図を参照しながら説明する。図1および図2は
第1の実施例を示すもので、シャンク1とボデー2とか
らなるソリッドタイプのエンドミルである。シャンク2
の外周部にはねじれを伴う切屑排出溝3が配設されて、
外周逃げ面4との交差稜線部に外周切刃となるねじれ刃
5を形成している。また、正面稜線部には底刃5が形成
されている。なお、外周逃げ面は、詳しくは逃げ角が段
階的に異なる数種類の面によって構成されるが、ここで
は一括して外周逃げ面4と称する。
BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment, which is a solid type end mill including a shank 1 and a body 2. Shank 2
The chip discharge groove 3 with twist is arranged on the outer peripheral part of the
A twist blade 5 serving as an outer peripheral cutting edge is formed at a ridge line portion intersecting with the outer peripheral flank 4. A bottom blade 5 is formed on the front ridge line portion. In addition, the outer peripheral flank is composed of several types of surfaces having different relief angles in stages, but is collectively referred to as the outer peripheral flank 4 here.

【0008】シャンク1からボデー2にかけて、ねじれ
刃5と同じねじれ角を有する油穴7が貫通している。油
穴7は、超硬合金の場合、丸棒の押し出し成形と同時に
成形することができる。この丸棒を素材としてシャンク
1およびボデー2を研削加工することで製品に仕上げる
のだが、この発明は、ボデー2を研削加工するときに、
油穴7が、外周逃げ面4の研削加工によって半割り状に
開口するねじれ溝8として出現するように位置合わせし
たうえで研削することを特徴としている。これによっ
て、ねじれ刃5に沿い、かつその全長にほぼ等しい長さ
の開口が容易に得られるようになる。
An oil hole 7 having the same helix angle as the helix blade 5 penetrates from the shank 1 to the body 2. In the case of cemented carbide, the oil hole 7 can be formed simultaneously with extrusion molding of a round bar. The product is finished by grinding the shank 1 and the body 2 using this round bar as a raw material. In the present invention, when the body 2 is ground,
It is characterized in that the oil holes 7 are aligned so as to appear as twist grooves 8 opened in half by grinding the outer peripheral flank 4 and then ground. This facilitates obtaining an opening along the twisting blade 5 and of a length substantially equal to its total length.

【0009】図3および図4は第2の実施例を示すもの
で、前記と同一箇所には同符号を付してある。この発明
の特徴は、外周逃げ面4の研削加工によっても油穴7が
出現せず、外周逃げ面4の表面に近接する位置に形成さ
せることにある。そして、後でこの外周逃げ面4に凹溝
9を付設するだけで、凹溝9の底面部分が油穴7に達し
て簡単に開口10を設けることができる。開口10は、
エンドミル使用時の切り込み深さなど、切削条件に応じ
て任意の複数位置に設定することができる。
3 and 4 show the second embodiment, and the same parts as those described above are designated by the same reference numerals. A feature of the present invention is that the oil hole 7 does not appear even when the outer peripheral flank 4 is ground, and is formed at a position close to the surface of the outer peripheral flank 4. Then, only by attaching the concave groove 9 to the outer peripheral flank 4 later, the bottom surface portion of the concave groove 9 reaches the oil hole 7 and the opening 10 can be easily provided. The opening 10 is
It can be set at arbitrary multiple positions according to cutting conditions such as the cutting depth when the end mill is used.

【0010】[0010]

【発明の効果】この発明の油穴付きエンドミルは、切削
液やエアーを内部給油するための油穴の開口を、外周逃
げ面に容易に作り出すことができるので、製造コストが
圧縮できる。このエンドミルは、高速回転使用であって
も、また深さの深い肩削りや溝削りであっても、切削液
などを切刃近傍に十分に供給することができるようにな
り、切屑排除効果を高め、切刃冷却効果を向上させる。
半割りねじれ溝のものは、ねじれ刃のほぼ全長に渡る開
口を外周逃げ面上に形成することができ、製造段階での
余計な工程は不要である。また、凹溝によって開口させ
るタイプのものは、簡単な後工程を加えるだけで、外周
逃げ面に、切削条件に応じた複数の開口を設けることが
できる。
In the end mill with oil holes according to the present invention, the opening of the oil holes for internally supplying the cutting fluid or the air can be easily formed on the outer peripheral flank, so that the manufacturing cost can be reduced. This end mill can supply cutting fluid sufficiently near the cutting edge even if it is used for high speed rotation, deep shoulder milling or grooving, and is effective in removing chips. Improve the cutting edge cooling effect.
In the case of the half-split spiral groove, an opening extending over substantially the entire length of the spiral blade can be formed on the outer peripheral flank, and an extra step in the manufacturing stage is unnecessary. Further, in the case of the type in which the groove is used for opening, a plurality of openings corresponding to the cutting conditions can be provided on the outer peripheral flank only by adding a simple post-process.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の第1の実施例の正面図を示す。FIG. 1 shows a front view of a first embodiment of the present invention.

【図2】図1の左側面図を示す。FIG. 2 shows a left side view of FIG.

【図3】この発明の第2の実施例の正面図を示す。FIG. 3 shows a front view of a second embodiment of the present invention.

【図4】図3の左側面図を示す。FIG. 4 shows a left side view of FIG.

【符号の説明】[Explanation of symbols]

4 外周逃げ面 5 ねじれ刃 7 油穴 8 ねじれ溝 9 凹溝 10 開口 4 Outer flank 5 twisting blade 7 oil holes 8 twist groove 9 groove 10 openings

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ボデーの外周部にねじれ刃が形成され、
シャンクからボデーにかけて油穴が穿設されてなる油穴
付きエンドミルにおいて、前記油穴は、前記ねじれ刃と
同じねじれ角を有し、ボデーの外周逃げ面において半割
り状に開口するねじれ溝に形成されることを特徴とする
油穴付きエンドミル。
1. A twisting blade is formed on an outer peripheral portion of a body,
In an end mill with an oil hole in which an oil hole is drilled from a shank to a body, the oil hole has the same helix angle as the helix blade, and is formed in a helix groove that opens in a half-divided manner on the outer peripheral flank of the body. An end mill with oil holes.
【請求項2】 ボデーの外周部にねじれ刃が形成され、
シャンクからボデーにかけて油穴が穿設されてなる油穴
付きエンドミルにおいて、前記油穴は、前記ねじれ刃と
同じねじれ角を有し、ボデーの外周逃げ面に付設される
凹溝によって複数の開口が形成されることを特徴とする
油穴付きエンドミル。
2. A twisting blade is formed on the outer peripheral portion of the body,
In an end mill with an oil hole in which an oil hole is formed from a shank to a body, the oil hole has the same helix angle as the helix blade, and a plurality of openings are formed by a groove provided on the outer peripheral flank of the body. An end mill with oil holes that is formed.
JP2002090855A 2002-03-28 2002-03-28 End mill with oil hole Withdrawn JP2003285220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002090855A JP2003285220A (en) 2002-03-28 2002-03-28 End mill with oil hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002090855A JP2003285220A (en) 2002-03-28 2002-03-28 End mill with oil hole

Publications (1)

Publication Number Publication Date
JP2003285220A true JP2003285220A (en) 2003-10-07

Family

ID=29236093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002090855A Withdrawn JP2003285220A (en) 2002-03-28 2002-03-28 End mill with oil hole

Country Status (1)

Country Link
JP (1) JP2003285220A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112006002926T5 (en) 2006-11-30 2010-02-04 Osg Corporation, Toyokawa end mill
WO2010094264A1 (en) * 2009-02-17 2010-08-26 Gühring Ohg Milling cutter with an internal coolant/lubricant supply
JP6362803B1 (en) * 2018-01-23 2018-07-25 株式会社松浦機械製作所 Cutting tools
WO2018176743A1 (en) * 2017-04-01 2018-10-04 深圳市鑫国钰精密工具有限公司 Ball nose cutter
CN109465483A (en) * 2018-12-07 2019-03-15 西安交通大学 A kind of cutting tool with self cooling and lubrication structure
CN113263211A (en) * 2021-04-15 2021-08-17 厦门金鹭特种合金有限公司 Finish machining single-edge cutter
CN113319351A (en) * 2021-04-15 2021-08-31 厦门金鹭特种合金有限公司 Cold cutter in lateral wall processing
CN113319350A (en) * 2021-04-15 2021-08-31 厦门金鹭特种合金有限公司 Long-edge type inner-cooling cutter
CN113319349A (en) * 2021-04-15 2021-08-31 厦门金鹭特种合金有限公司 Internal cooling tool with jet flow in handle

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112006002926B4 (en) * 2006-11-30 2010-09-09 Osg Corporation, Toyokawa end mill
DE112006002926T5 (en) 2006-11-30 2010-02-04 Osg Corporation, Toyokawa end mill
WO2010094264A1 (en) * 2009-02-17 2010-08-26 Gühring Ohg Milling cutter with an internal coolant/lubricant supply
WO2018176743A1 (en) * 2017-04-01 2018-10-04 深圳市鑫国钰精密工具有限公司 Ball nose cutter
JP2019126867A (en) * 2018-01-23 2019-08-01 株式会社松浦機械製作所 Cutting tool
JP6362803B1 (en) * 2018-01-23 2018-07-25 株式会社松浦機械製作所 Cutting tools
US10562111B2 (en) 2018-01-23 2020-02-18 Matsuura Machinery Corporation Cutting tool
CN109465483A (en) * 2018-12-07 2019-03-15 西安交通大学 A kind of cutting tool with self cooling and lubrication structure
CN109465483B (en) * 2018-12-07 2020-06-26 西安交通大学 Cutting tool with self-cooling lubricating structure
CN113263211A (en) * 2021-04-15 2021-08-17 厦门金鹭特种合金有限公司 Finish machining single-edge cutter
CN113319351A (en) * 2021-04-15 2021-08-31 厦门金鹭特种合金有限公司 Cold cutter in lateral wall processing
CN113319350A (en) * 2021-04-15 2021-08-31 厦门金鹭特种合金有限公司 Long-edge type inner-cooling cutter
CN113319349A (en) * 2021-04-15 2021-08-31 厦门金鹭特种合金有限公司 Internal cooling tool with jet flow in handle

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Effective date: 20050607