JPH06190625A - End mill - Google Patents
End millInfo
- Publication number
- JPH06190625A JPH06190625A JP34599692A JP34599692A JPH06190625A JP H06190625 A JPH06190625 A JP H06190625A JP 34599692 A JP34599692 A JP 34599692A JP 34599692 A JP34599692 A JP 34599692A JP H06190625 A JPH06190625 A JP H06190625A
- Authority
- JP
- Japan
- Prior art keywords
- end mill
- tool
- cooling medium
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/28—Features relating to lubricating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2270/00—Details of milling machines, milling processes or milling tools not otherwise provided for
- B23C2270/04—Use of centrifugal force
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Milling Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、切削速度が３００ｍ／
min 以上の精密切削加工において、工具刃先や加工部位
を冷却・潤滑するためのエンドミルに関する。BACKGROUND OF THE INVENTION The present invention has a cutting speed of 300 m /
The present invention relates to an end mill for cooling and lubricating a tool edge and a machining part in a precision cutting process of min or more.
【０００２】[0002]
【従来の技術】従来の精密切削加工において、加工中に
バイトやエンドミルなど工具刃先を冷却する方法として
刃先部分に外部から切削油をかける方法がとられてい
た。しかし、従来の工具を高速回転させる切削では、切
削油が工具回転の遠心力によって吹き飛ばされるため切
削点に切削油が届かず、十分な冷却効果を得ることがで
きず、工具摩耗が著しかった。実開平3−109713 号公報
ではドリル先端に穴を有しているため側面の加工に対し
ては十分では無い。また実開平4−51306号公報の冷却機
構を有する切削工具では旋削加工を対象としたものであ
り複雑な形状加工はできない。2. Description of the Related Art In the conventional precision cutting process, a method of applying cutting oil from the outside to the cutting edge part has been used as a method of cooling the cutting edge of a tool such as a cutting tool or an end mill during processing. However, in the conventional cutting in which a tool is rotated at a high speed, the cutting oil is blown off by the centrifugal force of the tool rotation, so that the cutting oil does not reach the cutting point, a sufficient cooling effect cannot be obtained, and the tool wear is remarkable. In Japanese Utility Model Laid-Open No. 3-109713, a hole is formed at the tip of the drill, which is not sufficient for processing the side surface. Further, the cutting tool having the cooling mechanism disclosed in Japanese Utility Model Laid-Open No. 4-51306 is intended for turning and cannot perform complicated shape machining.
【０００３】また、１９９２年１月２２日，日刊工業新
聞に切削油を７０kg／cm2 の高圧で切削加工する技術が
あるが、被削材に十分な硬度がないと高圧力の切削油に
より被削材が変形し加工精度を得ることが出来ない。On January 22, 1992, the Nikkan Kogyo Shimbun has a technology for cutting cutting oil at a high pressure of 70 kg / cm 2 , but if the work material does not have sufficient hardness, high-pressure cutting oil is used. The work material is deformed and the machining accuracy cannot be obtained.
【０００４】[0004]
【発明が解決しようとする課題】上記従来技術では、高
速切削での工具摩耗は著しく速かった。In the above prior art, the tool wear during high speed cutting was extremely fast.
【０００５】本発明の目的は、切削速度３００ｍ／min
以上での精密切削加工を可能とし、工具摩耗を押さえる
ことにある。The object of the present invention is to cut at a speed of 300 m / min.
The purpose of this is to enable the precision cutting process described above and suppress tool wear.
【０００６】[0006]
【課題を解決するための手段】上記目的は、エンドミル
に冷却媒体を通す穴を設けることにより、達成される。The above object is achieved by providing a hole in the end mill through which a cooling medium passes.
【０００７】[0007]
【作用】エンドミルにオイルホールを設け、このオイル
ホールに冷却媒体を通すことにより、高速回転で生ずる
遠心力によって、切削油が切削点に供給出来ないという
問題を解決し、高速切削加工における工具寿命が飛躍的
に伸び、精密切削加工を行うことができる。[Function] By providing an oil hole in the end mill and passing a cooling medium through this oil hole, the problem that cutting oil cannot be supplied to the cutting point due to centrifugal force generated at high speed rotation is solved, and the tool life in high speed cutting Can be dramatically expanded and precision cutting can be performed.
【０００８】[0008]
【実施例】図１は本発明による側面加工を主な用途とし
た形状のオイルホールエンドミル１の一実施例である。
スピンドルスルー主軸もしくはサイドスルーホルダなど
を用い、オイルホールエンドミル１内に冷却媒体５を通
す。オイルホールエンドミル１内を通った冷却媒体５は
工具回転による遠心力と冷却媒体５の吐出圧力を利用
し、工具刃先４の切削点に十分供給できるようにエンド
ミル刃と刃の溝部にサイドホール３を設ける。このサイ
ドホール３の径はエンドミル径の１／５以下とし、セン
ターホール２とサイドホール３の角度はエンドミル刃の
ねじれ角以上でサイドホールを設ける。これにより切削
加工時に発生する切削熱を奪い、工具刃先の摩耗を押さ
え、工具寿命を延ばし、精密切削加工を短時間で行う。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of an oil hole end mill 1 according to the present invention, which is mainly used for side surface machining.
A cooling medium 5 is passed through the oil hole end mill 1 using a spindle through spindle or a side through holder. The cooling medium 5 that has passed through the oil hole end mill 1 utilizes the centrifugal force due to the rotation of the tool and the discharge pressure of the cooling medium 5, so that the side hole 3 is formed in the groove portion of the end mill blade and the blade so that the cooling medium 5 can be sufficiently supplied to the cutting point of the tool cutting edge 4. To provide. The diameter of the side hole 3 is set to ⅕ or less of the end mill diameter, and the angle between the center hole 2 and the side hole 3 is set to be larger than the helix angle of the end mill blade. This removes the cutting heat generated during cutting, suppresses the wear of the cutting edge of the tool, extends the life of the tool, and performs precision cutting in a short time.
【０００９】図２は底面加工を主な用途とした形状のオ
イルホールエンドミル１の一実施例である。側面刃と比
べ底面刃は切削加工面を擦るため工具摩耗が著しいの
で、底面刃の摩耗を押さえるためにエンドミル中心にセ
ンターホールを貫通した形状とした。FIG. 2 shows an embodiment of an oil hole end mill 1 having a shape mainly used for bottom machining. Compared to the side blades, the bottom blade rubs against the machined surface, causing significant tool wear. Therefore, in order to suppress the wear of the bottom blade, the center hole was formed through the center of the end mill.
【００１０】図３は側面と底面の同時切削を主な用途と
した形状のオイルホールエンドミル１の実施例である。FIG. 3 shows an embodiment of an oil hole end mill 1 having a shape mainly used for simultaneous cutting of the side surface and the bottom surface.
【００１１】図４はエンドミル刃先のすくい面に冷却媒
体の吐出穴のあるオイルホールエンドミル１の実施例で
ある。すくい面側に冷却媒体を吐出させることによって
切削加工で生じた切削熱を持つ切粉を工具刃先に熱を伝
えない構造である。FIG. 4 shows an embodiment of an oil hole end mill 1 having a cooling medium discharge hole on the rake face of the end mill blade. This structure does not transfer heat to cutting edge of the tool that has cutting heat generated by cutting by discharging the cooling medium to the rake face side.
【００１２】[0012]
【発明の効果】本発明によれば、従来の外部からの切削
油の供給での高速切削加工と、内部からの切削油の供給
でのオイルホールエンドミルと比べて高速切削加工での
工具摩耗量が少なくなり、超硬エンドミルによる高硬度
材の切削加工やダイヤモンド工具による鉄鋼材料の切削
加工が可能となり、工具寿命や加工精度が向上する。According to the present invention, the amount of tool wear in high-speed cutting compared with the conventional high-speed cutting by supplying cutting oil from the outside and the oil hole end mill by supplying cutting oil from inside. It is possible to cut high-hardness materials with carbide end mills and steel materials with diamond tools, improving tool life and processing accuracy.
【図１】本発明の一実施例の側面図。FIG. 1 is a side view of an embodiment of the present invention.
【図２】本発明の第二の実施例の側面図。FIG. 2 is a side view of the second embodiment of the present invention.
【図３】本発明の第三の実施例の側面図。FIG. 3 is a side view of the third embodiment of the present invention.
【図４】本発明の第四の実施例の側面図。FIG. 4 is a side view of the fourth embodiment of the present invention.
１…オイルホールエンドミル、２…センターホール、３
…サイドホール、４…エンドミル刃先、５…冷却媒体。1 ... Oil hole end mill, 2 ... Center hole, 3
… Side holes, 4… End mill blades, 5… Cooling medium.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大滝 正行 静岡県清水市村松390番地 株式会社日立 製作所清水工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayuki Otaki 390 Muramatsu, Shimizu City, Shizuoka Prefecture Hitachi Ltd. Shimizu Plant
Claims (1)
冷却媒体が効率良く刃先及び切削加工点を冷却・潤滑す
ることができることを特徴とするエンドミル。1. An end mill characterized in that a cooling medium such as cutting oil, air or nitrogen gas can efficiently cool and lubricate the cutting edge and the cutting point on the cutting edge of the tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34599692A JPH06190625A (en) | 1992-12-25 | 1992-12-25 | End mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34599692A JPH06190625A (en) | 1992-12-25 | 1992-12-25 | End mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06190625A true JPH06190625A (en) | 1994-07-12 |
Family
ID=18380429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34599692A Pending JPH06190625A (en) | 1992-12-25 | 1992-12-25 | End mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06190625A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1133812A (en) * | 1997-07-23 | 1999-02-09 | Tama Kasei Kk | End mill |
| EP1224994A2 (en) * | 1996-12-03 | 2002-07-24 | Seco Tools Ab | Milling cutter |
| CN104551160A (en) * | 2014-12-23 | 2015-04-29 | 苏州欧美克合金工具有限公司 | Hard alloy cutter |
| CN104551178A (en) * | 2014-12-30 | 2015-04-29 | 苏州欧美克合金工具有限公司 | Internally-cooled three-edge milling cutter |
| CZ306051B6 (en) * | 2014-08-19 | 2016-07-13 | Václav Diviš | Shank-type, monolithic, milling cutter with axial cooling channel |
-
1992
- 1992-12-25 JP JP34599692A patent/JPH06190625A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1224994A2 (en) * | 1996-12-03 | 2002-07-24 | Seco Tools Ab | Milling cutter |
| EP1224994A3 (en) * | 1996-12-03 | 2003-07-09 | Seco Tools Ab | Milling cutter |
| JPH1133812A (en) * | 1997-07-23 | 1999-02-09 | Tama Kasei Kk | End mill |
| CZ306051B6 (en) * | 2014-08-19 | 2016-07-13 | Václav Diviš | Shank-type, monolithic, milling cutter with axial cooling channel |
| CN104551160A (en) * | 2014-12-23 | 2015-04-29 | 苏州欧美克合金工具有限公司 | Hard alloy cutter |
| CN104551178A (en) * | 2014-12-30 | 2015-04-29 | 苏州欧美克合金工具有限公司 | Internally-cooled three-edge milling cutter |
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