JP2002126953A - Tip oil hole forming method - Google Patents
Tip oil hole forming methodInfo
- Publication number
- JP2002126953A JP2002126953A JP2000324996A JP2000324996A JP2002126953A JP 2002126953 A JP2002126953 A JP 2002126953A JP 2000324996 A JP2000324996 A JP 2000324996A JP 2000324996 A JP2000324996 A JP 2000324996A JP 2002126953 A JP2002126953 A JP 2002126953A
- Authority
- JP
- Japan
- Prior art keywords
- oil hole
- hole
- shank
- tip
- oil
- 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.)
- Granted
Links
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はチップの油穴の形成
方法に関する。The present invention relates to a method for forming an oil hole in a chip.
【０００２】[0002]
【従来の技術】図７（ａ）〜（ｄ）は従来の油穴の形成
方法の一例を示す図である。 （ａ）：シャンク１０１に油穴１０２，１０３を開け、
このシャンク１０１の端部１０４にチップ半完成品１０
５をろう１０６でろう付けする。 （ｂ）：そして、シャンク１０１の油穴１０２に放電加
工機の電極１０７を通す。 （ｃ）：通した電極１０７をチップ半完成品１０５に押
し付け、穿孔することで油穴１０８を形成する。油穴１
０８の直径と油穴１０２の直径はほぼ同じである。 （ｄ）：同様に、チップ半完成品１０５に油穴１０９を
開ける。2. Description of the Related Art FIGS. 7A to 7D are views showing an example of a conventional oil hole forming method. (A): Open oil holes 102 and 103 in the shank 101,
The semi-finished chip 10 is attached to the end 104 of the shank 101.
5 is brazed with a braze 106. (B): Then, the electrode 107 of the electric discharge machine is passed through the oil hole 102 of the shank 101. (C): The passed electrode 107 is pressed against the semi-finished chip 105 and drilled to form an oil hole 108. Oil hole 1
08 and the diameter of the oil hole 102 are substantially the same. (D): Similarly, an oil hole 109 is formed in the semi-finished chip 105.
【０００３】[0003]
【発明が解決しようとする課題】しかし、図７のように
チップをろう付けした後に、チップに油穴を形成する
と、油穴１０２，１０３に電極１０７が接触してきずが
発生する場合があり、高精度に位置決めする必要があ
る。そのため、生産効率が低下する。また、油穴１０
２，１０３の直径に合った電極１０７を使用するため、
油穴１０２，１０３の直径が変わると、径の異なった多
種類の電極１０７を造る必要があり、生産効率が低下す
る。さらに、電極が長いと、チップ１０５の油穴１０
８，１０９が曲り、出口の位置がずれることがある。However, if an oil hole is formed in the chip after brazing the chip as shown in FIG. 7, the electrode 107 may come into contact with the oil holes 102 and 103 to cause a flaw. High precision positioning is required. Therefore, the production efficiency decreases. Oil hole 10
In order to use the electrode 107 corresponding to the diameter of 2,103,
When the diameters of the oil holes 102 and 103 are changed, it is necessary to manufacture various kinds of electrodes 107 having different diameters, and the production efficiency is reduced. Furthermore, if the electrode is long, the oil hole 10
8,109 may bend and the position of the exit may be shifted.
【０００４】そこで、本発明の目的は、生産効率の向上
を図ることができるとともに、加工精度の向上を図るこ
とができるチップの油穴の形成方法を提供することにあ
る。Accordingly, an object of the present invention is to provide a method for forming an oil hole in a chip, which can improve production efficiency and processing accuracy.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に請求項１は、予め油穴を開けたシャンクの端部にチッ
プをろう付けするチップろう付け工程と、このチップを
付けたシャンクを放電加工機にセットし、チップに電極
で油穴より小径のスタート孔を穿設するスタート孔加工
工程と、シャンクをワイヤ放電加工機にセットし、スタ
ート孔並びに油穴にワイヤを通すとともに、チップにシ
ャンクの油穴に対して同径の油穴を形成する油穴加工工
程と、からなることを特徴とする。チップろう付け工程
と、スタート孔加工工程と、油穴加工工程とでチップの
油穴を形成する。In order to achieve the above object, a first aspect of the present invention is to provide a tip brazing step of brazing a tip to an end of a shank in which an oil hole has been previously drilled, and a step of removing the shank provided with the tip. A start hole machining step of setting a start hole with a smaller diameter than the oil hole on the tip with an electrode on the electric discharge machine and setting the shank on the wire electric discharge machine, passing the wire through the start hole and the oil hole, And forming an oil hole having the same diameter as the oil hole of the shank. The oil hole of the chip is formed by the chip brazing step, the start hole forming step, and the oil hole forming step.
【０００６】スタート孔加工工程では、チップに電極で
油穴より小径のスタート孔を穿設するので、孔の位置は
油穴の直径の範囲内であればどこに開けてもよく、手間
がかからない。油穴加工工程では、ワイヤでチップにシ
ャンクの油穴に対して同径の油穴を形成するので、シャ
ンクの油穴にきずは発生しない。また、チップの油穴は
シャンクの中心軸線と平行になり、チップの油穴の出口
の位置がずれることはない。In the start hole processing step, since a start hole having a smaller diameter than the oil hole is formed in the chip with an electrode, the hole may be formed anywhere within the range of the diameter of the oil hole, and no trouble is required. In the oil hole processing step, since the oil hole of the same diameter as the oil hole of the shank is formed on the tip with a wire, no flaw is generated in the oil hole of the shank. Further, the oil hole of the chip is parallel to the central axis of the shank, and the position of the outlet of the oil hole of the chip does not shift.
【０００７】[0007]
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図１は本発明に係るチップろう付け工程の
説明図である。まず、シャンク１１を造る。具体的に
は、超硬合金の丸棒を所定の外径に旋削して本体１２を
削り出し、この本体１２に油穴１３，１４を開ける。油
穴１３は、中心軸線１５に対して平行に開けたものであ
り、油穴１３の直径はＤｈに設定した。油穴１４は、油
穴１３と同じものである。Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is an explanatory view of a chip brazing step according to the present invention. First, the shank 11 is made. Specifically, a round bar made of cemented carbide is turned to a predetermined outer diameter to cut out the main body 12, and oil holes 13 and 14 are formed in the main body 12. The oil hole 13 was opened in parallel with the center axis 15, and the diameter of the oil hole 13 was set to Dh. The oil hole 14 is the same as the oil hole 13.
【０００８】その次に、チップ半完成品１６を造る。具
体的には、チップ半完成品１６は、第２層１７と、この
第２層１７を第１層１８及び第３層１９でサンドイッチ
した３層積層体であり、第２層１７が工具の回転中心を
通る縦長の細い帯であり、この細い帯に切刃を形成する
とともに、第２層１７の両側を第１層１８及び第３層１
９で補強する構造である。Next, a semi-finished chip 16 is manufactured. Specifically, the chip semi-finished product 16 is a three-layer laminate in which the second layer 17 is sandwiched by the first layer 18 and the third layer 19, and the second layer 17 is formed of a tool. It is a vertically long narrow band passing through the center of rotation, and a cutting edge is formed in this narrow band, and both sides of the second layer 17 are covered with the first layer 18 and the third layer 1.
9 is a structure to reinforce.
【０００９】第２層１７は、ＣＢＮ若しくはダイヤモン
ドの高硬度焼結体である。第１層１８及び第３層１９
は、超硬合金などの工具材料である。３層積層体の製造
方法の一例を説明すると、まず、４〜１６μｍのダイヤ
モンド粒若しくはＣＢＮ粒を、ＨＩＰ（熱間静水圧プレ
ス）にて等圧的に加圧しながら焼結することで、第２層
１７を製造し、この第２層１７の左右にＷＣ粉末を重ね
ＨＩＰで加圧しながら焼結することで、３層積層体を得
る。そして、３層積層体をワイヤ放電加工機で切断し、
多数のチップ半完成品１６を切出す。このように造った
チップ半完成品１６をシャンク１１の端部２１にろう２
２でろう付けする。The second layer 17 is a high-hardness sintered body of CBN or diamond. First layer 18 and third layer 19
Is a tool material such as a cemented carbide. An example of a method for manufacturing a three-layered laminate will be described. First, diamond particles or CBN particles of 4 to 16 μm are sintered while being isobarically pressed by HIP (Hot Isostatic Press). The two-layer 17 is manufactured, and the WC powder is superimposed on the left and right of the second layer 17 and sintered by pressing with HIP to obtain a three-layer laminate. Then, the three-layer laminate is cut by a wire electric discharge machine,
A large number of semi-finished chips 16 are cut out. The semi-finished chip 16 manufactured in this manner is attached to the end 21 of the shank 11 by the solder 2.
Braze with 2.
【００１０】図２は本発明に係るスタート孔加工工程の
第１説明図である。チップ半完成品１６をろう付けした
後、シャンク１１を放電加工機であるところの形彫放電
加工機２５にセットし、チップ半完成品１６にスタート
孔を穿設する。FIG. 2 is a first explanatory view of the start hole forming step according to the present invention. After brazing the semi-finished chip 16, the shank 11 is set in a die sinking electric discharge machine 25 which is an electric discharge machine, and a start hole is formed in the semi-finished chip 16.
【００１１】具体的には、形彫放電加工機２５は、ワー
クを載せるためのテーブル３１と、このテーブル３１に
載せ、ワークの位置決めを行うガイド部材３２と、加工
槽３３（加工液３４）と、上方に設けたヘッド３５と、
このヘッド３５に取付けた電極３６と、図に示していな
ＮＣ（数値制御）制御装置と、を備えたものである。３
７は、ガイド部材３２内に図示していない押し部材で取
付けた基台である。Specifically, the die sinking electric discharge machine 25 includes a table 31 for placing a work, a guide member 32 for placing the work on the table 31 and positioning the work, a machining tank 33 (working fluid 34), , A head 35 provided above,
An electrode 36 attached to the head 35 and an NC (numerical control) controller not shown in the figure are provided. 3
Reference numeral 7 denotes a base mounted in the guide member 32 by a pressing member (not shown).
【００１２】電極３６の外径をＤｂに設定し、外径Ｄｂ
はシャンク１１の油穴１３，１４の直径Ｄｈより小さい
径である。また、電極３６は、中空、若しくは中実であ
る。基台３７は、本体４１の側面に基準面４２を形成
し、上部にガイドピン４３，４３を設けたものである。The outer diameter of the electrode 36 is set to Db, and the outer diameter Db
Is smaller than the diameter Dh of the oil holes 13 and 14 of the shank 11. The electrode 36 is hollow or solid. The base 37 has a reference surface 42 formed on a side surface of a main body 41 and guide pins 43 provided on an upper portion thereof.
【００１３】この基台３７のガイドピン４３，４３にシ
ャンク１１の油穴１３，１４を嵌め、その基台３７をガ
イド部材３２内に基準面４２を基準に取付け、予め作成
したＮＣプログラムをＮＣ制御装置に入力（ＦＤ、若し
くはオンライン等）する。そして、テーブル３１を所定
位置に送ることで、電極３６の下にチップ半完成品１６
を送る。The oil holes 13 and 14 of the shank 11 are fitted into the guide pins 43 and 43 of the base 37, and the base 37 is mounted in the guide member 32 with reference to the reference surface 42. Input (FD, online, etc.) to the control device. Then, by sending the table 31 to a predetermined position, the semi-finished chip 16 is placed under the electrode 36.
Send.
【００１４】図３（ａ）〜（ｃ）は本発明に係るスター
ト孔加工工程の第２説明図であり、上段に平面図を併記
したので、合計６個の図を表わしたものである。 （ａ）：ＮＣプログラムによって電極３６の下にチップ
半完成品１６を送り、油穴１３の直径Ｄｈの範囲内に電
極３６を収め、その後、ヘッド３５とともに電極３６を
矢印の如く下降させる。FIGS. 3 (a) to 3 (c) are second explanatory views of the step of forming a start hole according to the present invention, and a total of six figures are shown since a plan view is also shown at the top. (A): The semi-finished chip 16 is sent under the electrode 36 by the NC program, and the electrode 36 is placed within the range of the diameter Dh of the oil hole 13, and then the electrode 36 is lowered together with the head 35 as shown by the arrow.
【００１５】（ｂ）：電極３６を所定の条件で送り、シ
ャンク１１の油穴１３より小径で、且つ貫通したスター
ト孔４５を穿設する。このスタート孔４５の直径はＤｓ
であり、直径Ｄｓは、電極３６の外径Ｄｂとほぼ等し
い。ここでは、スタート孔４５を油穴１３の中心に開け
たが、必ずしもスタート孔４５を油穴１３の中心に開け
る必要はなく、油穴１３の直径Ｄｈの範囲内にスタート
孔４５を設ければよい。(B): The electrode 36 is fed under a predetermined condition, and a start hole 45 having a smaller diameter than the oil hole 13 of the shank 11 and penetrating is formed. The diameter of the start hole 45 is Ds
And the diameter Ds is substantially equal to the outer diameter Db of the electrode 36. Here, the start hole 45 is formed at the center of the oil hole 13, but the start hole 45 does not necessarily need to be formed at the center of the oil hole 13, and if the start hole 45 is provided within the range of the diameter Dh of the oil hole 13. Good.
【００１６】（ｃ）：続けて、隣にスタート孔４６を穿
設する。具体的には、スタート孔４５を開けた後、ヘッ
ドとともに、電極３６を矢印の如く上昇させ、テーブ
ルを所定の量だけ矢印の如く送り、電極３６の下方に
油穴１４を臨ませ、再び電極３６を矢印の如く下降さ
せてスタート孔４６を開ける。なお、スタート孔４６の
直径はＤｓであり、スタート孔４６の位置は、油穴１４
の直径Ｄｈの範囲内に設定する。(C): Subsequently, a start hole 46 is formed next to the start hole 46. Specifically, after opening the start hole 45, the electrode 36 is raised with the head as shown by the arrow, the table is fed by a predetermined amount as shown by the arrow, and the oil hole 14 is exposed below the electrode 36. 36 is lowered as indicated by an arrow to open a start hole 46. The diameter of the start hole 46 is Ds, and the position of the start hole 46 is
Is set within the range of the diameter Dh.
【００１７】このようにスタート孔加工工程では、スタ
ート孔４５，４６を油穴１３，１４の直径Ｄｈの範囲内
に設けるので、高精度の位置決めを必要とせず、スター
ト孔４５，４６の加工は容易である。また、電極３６は
油穴１３，１４に接触せず、油穴１３，１４にきずが発
生する心配はない。As described above, in the start hole forming step, the start holes 45 and 46 are provided within the range of the diameter Dh of the oil holes 13 and 14, so that high-precision positioning is not required. Easy. Further, the electrode 36 does not contact the oil holes 13 and 14, and there is no fear that the oil holes 13 and 14 may be damaged.
【００１８】さらに、チップ半完成品１６の加工側４７
にヘッド３５並びに電極３６と干渉するものはなく、電
極３６の長さを短くすることができる。その結果、電極
３６を細くすることができ、１種類の径でほぼ全てのス
タート孔加工に対応することができ、生産コストを低減
することができる。このようにスタート孔加工後、シャ
ンク１１を取り外し、次工程に搬送する。Further, the processing side 47 of the semi-finished chip 16
Nothing interferes with the head 35 and the electrode 36, and the length of the electrode 36 can be shortened. As a result, the electrode 36 can be made thinner, and one kind of diameter can be used for almost all start hole processing, and the production cost can be reduced. After the start hole processing, the shank 11 is detached and transported to the next step.
【００１９】図４は本発明に係る油穴加工工程の第１説
明図である。シャンク１１をワイヤ放電加工機５０にセ
ットし、チップ半完成品１６に油穴を形成する。具体的
には、ワイヤ放電加工機５０はワークを載せるためのテ
ーブル５１と、このテーブル５１に載せ、ワークの位置
決めを行う基台５２と、加工槽５３（加工液５４）と、
ワイヤ５５と、図に示していなＮＣ（数値制御）制御装
置と、を備えたものである。５６は、基台５２に図示し
ていない取付け具で取付けたチャックである。FIG. 4 is a first explanatory view of the oil hole forming step according to the present invention. The shank 11 is set in the wire electric discharge machine 50 and an oil hole is formed in the semi-finished chip 16. Specifically, the wire electric discharge machine 50 includes a table 51 on which a work is placed, a base 52 placed on the table 51 for positioning the work, a processing tank 53 (working fluid 54),
It is provided with a wire 55 and an NC (Numerical Control) controller not shown. Reference numeral 56 denotes a chuck attached to the base 52 with an attachment (not shown).
【００２０】ワイヤ５５のワイヤ直径はＤｗであり、ワ
イヤ直径Ｄｗはスタート孔４５，４６の直径Ｄｓより僅
かに小さい。チャック５６は、位置決め穴５７，５７を
有するものである。The wire diameter of the wire 55 is Dw, and the wire diameter Dw is slightly smaller than the diameter Ds of the start holes 45 and 46. The chuck 56 has positioning holes 57 and 57.
【００２１】図４のチャック５６でシャンク１１の端を
把持し、テーブル５１にシャンク１１を垂直にセットす
る。その際、チャック５６の位置決め穴５７，５７にガ
イドピン５８を通し、このガイドピン５８に油穴１３，
１４を嵌め、油穴１３，１４の芯出しを行い、その後、
ガイドピン５８を取り外す。そして、予め作成したＮＣ
プログラムをＮＣ制御装置に入力し、テーブル５１でチ
ップ半完成品１６を所定の位置に送り、スタート孔４５
並びに油穴１３にワイヤ５５を通す。The end of the shank 11 is gripped by the chuck 56 shown in FIG. 4 and the shank 11 is set vertically on the table 51. At this time, guide pins 58 are passed through the positioning holes 57 of the chuck 56, and the oil holes 13,
14 and center the oil holes 13 and 14, then
Remove the guide pin 58. And the NC created beforehand
The program is input to the NC controller, and the chip semi-finished product 16 is sent to a predetermined position on the table 51, and the start hole 45 is set.
The wire 55 is passed through the oil hole 13.
【００２２】図５（ａ）〜（ｃ）は本発明に係る油穴加
工工程の第２説明図であり、上段に平面図を併記したの
で、合計６個の図を表わしたものである。 （ａ）：スタート孔４５並びに油穴１３にワイヤ５５を
通した後、ＮＣプログラムによって油穴１３を基準に自
動でワイヤ放電加工機５０のテーブル５１を稼働する。
まず、テーブル５１はＸ軸方向（矢印方向）に移動を
開始する。FIGS. 5A to 5C are second explanatory views of the oil hole drilling process according to the present invention, and a total of six figures are shown since a plan view is also shown at the top. (A): After passing the wire 55 through the start hole 45 and the oil hole 13, the table 51 of the wire electric discharge machine 50 is automatically operated based on the oil hole 13 by the NC program.
First, the table 51 starts moving in the X-axis direction (arrow direction).
【００２３】（ｂ）：テーブル５１は、２軸（Ｘ軸方
向、Ｙ軸方向）に矢印の如く、のの字のように動き、
ワイヤ５５でチップ半完成品１６を油穴１３に倣うよう
に切り、チップ半完成品１６に油穴６１を形成する。な
お、ここでは、形成途中の油穴６１を示し、矢印の如
くさらに動くことで、油穴６１の残りの部分を切り、油
穴６１の形成は完成する。(B): The table 51 moves in two axes (X-axis direction, Y-axis direction) like an arrow as shown by an arrow.
The semi-finished chip 16 is cut by the wire 55 so as to follow the oil hole 13, and an oil hole 61 is formed in the semi-finished chip 16. Here, the oil hole 61 being formed is shown, and by further moving as indicated by the arrow, the remaining portion of the oil hole 61 is cut off, and the formation of the oil hole 61 is completed.
【００２４】（ｃ）：油穴６１を仕上げた後、同様に油
穴６２を形成し、チップ半完成品１６の油穴６１，６２
の加工は完了する。油穴６１，６２の直径はＤｔであ
り、直径Ｄｔは、シャンク１１の油穴１３，１４の直径
Ｄｈに対し、僅かに小さいが、その差は無視できる微小
な寸法であり、ここでは、油穴１３，１４に対して同径
と呼称する。(C): After finishing the oil hole 61, an oil hole 62 is similarly formed, and the oil holes 61, 62 of the chip semi-finished product 16 are formed.
Is completed. The diameter of the oil holes 61 and 62 is Dt, and the diameter Dt is slightly smaller than the diameter Dh of the oil holes 13 and 14 of the shank 11, but the difference is a minute size that can be ignored. The holes 13 and 14 are called the same diameter.
【００２５】このように油穴加工工程では、シャンク１
１の油穴１３，１４並びにチップ半完成品１６のスター
ト孔４５，４６（図４参照）にワイヤ５５を通し、ワイ
ヤ５５でチップ半完成品１６に油穴６１，６２を形成す
るので、油穴６１，６２を形成する際に、シャンク１１
の油穴１３，１４にきずが発生することはない。従っ
て、生産効率の向上を図ることができる。As described above, in the oil hole forming process, the shank 1
Since the wire 55 is passed through the oil holes 13 and 14 of the first chip and the start holes 45 and 46 (see FIG. 4) of the semi-finished chip 16 and the oil holes 61 and 62 are formed in the semi-finished chip 16 with the wire 55, the oil When forming the holes 61 and 62, the shank 11
No flaws are generated in the oil holes 13 and 14 of FIG. Therefore, it is possible to improve the production efficiency.
【００２６】また、シャンク１１の油穴１３，１４並び
にチップ半完成品１６のスタート孔４５，４６にワイヤ
５５を通し、ワイヤ５５でチップ半完成品１６に油穴１
３，１４対して同径の油穴６１，６２を形成するので、
中心軸線に平行に油穴６１，６２を切断することがで
き、油穴６１，６２の出口の位置がずれることはなく、
油穴６１，６２の位置の加工精度の向上を図ることがで
きる。The wire 55 is passed through the oil holes 13 and 14 of the shank 11 and the start holes 45 and 46 of the chip semi-finished product 16, and the oil hole 1 is inserted into the chip semi-finished product 16 with the wire 55.
Since oil holes 61 and 62 of the same diameter are formed for 3, 14
The oil holes 61 and 62 can be cut in parallel with the central axis, and the positions of the outlets of the oil holes 61 and 62 do not shift.
The processing accuracy of the positions of the oil holes 61 and 62 can be improved.
【００２７】さらに、チップ半完成品１６のスタート孔
４５にワイヤ５５を通し、ワイヤ５５でチップ半完成品
１６に油穴１３，１４対して同径の油穴６１，６２を形
成するので、油穴の直径に合せて直径の異なる電極を造
る必要はなく、生産効率の向上を図ることができる。Further, the wire 55 is passed through the start hole 45 of the semi-finished chip 16 and the oil holes 61 and 62 having the same diameter as the oil holes 13 and 14 are formed in the semi-finished chip 16 with the wire 55. It is not necessary to manufacture electrodes having different diameters according to the diameter of the holes, and it is possible to improve production efficiency.
【００２８】なお、従来技術のなかには、チップ半完成
品に油穴を形成した後に、シャンクにろう付けして油穴
を完成させる製造方法も知られている。この場合には、
ろうがシャンクの油穴に突出するため除去工程が発生す
る。本発明のチップの油穴の形成方法では、ろうを取り
除く必要がなく、手間を省くことができ、生産効率の向
上を図ることができる。次に、チップに油穴を形成した
ドリルについて説明する。It is to be noted that a manufacturing method in which an oil hole is formed in a semifinished chip product and then brazed to a shank to complete the oil hole is also known in the prior art. In this case,
The removal process occurs because the wax protrudes into the oil hole of the shank. In the method for forming an oil hole in a chip according to the present invention, it is not necessary to remove the wax, the labor can be saved, and the production efficiency can be improved. Next, a drill having an oil hole formed in a chip will be described.
【００２９】図６は本発明に係るチップの油穴の形成方
法を用いたドリルの斜視図であり、ドリルの一例を示
す。チップ半完成品１６に油穴６１，６２（図に示して
いない）を形成した後、チップ半完成品１６に切刃６
４，６４を形成してチップ６５とし、シャンク１１に切
屑排出溝６６，６６（図に示していない）を形成し、ド
リル６３を得る。本発明のチップの油穴の形成方法でチ
ップ６５に油穴６１，６２を形成すると、油穴６１，６
２の出口の位置がずれることはなく、出口から噴出する
切削油を切刃６４，６４並びに切削部に向けて供給する
ことができる。FIG. 6 is a perspective view of a drill using the method for forming an oil hole in a chip according to the present invention, and shows an example of the drill. After forming oil holes 61 and 62 (not shown) in the semi-finished chip 16, the cutting edge 6 is formed in the semi-finished chip 16.
4 and 64 are formed into a chip 65, and chip discharge grooves 66 and 66 (not shown) are formed in the shank 11 to obtain a drill 63. When the oil holes 61 and 62 are formed in the chip 65 by the method for forming the oil holes of the chip of the present invention, the oil holes 61 and 6 are formed.
The position of the outlet 2 is not shifted, and the cutting oil spouted from the outlet can be supplied to the cutting blades 64, 64 and the cutting portion.
【００３０】尚、本発明の実施の形態に示した図１のチ
ップ半完成品１６の構造、図６のチップ６５の形状は一
例であり、これらに限定しない。図２の放電加工機とし
て形彫放電加工機２５を用いたが、放電加工機は形彫放
電加工機２５のみに限定するものではなく、放電加工機
の構成やシャンク１１のセット方法は任意である。図４
のワイヤ放電加工機５０の構成やシャンク１１のセット
方法は任意である。The structure of the semi-finished chip 16 shown in FIG. 1 and the shape of the chip 65 shown in FIG. 6 shown in the embodiment of the present invention are merely examples, and the present invention is not limited to these. Although the die sinking electric discharge machine 25 was used as the electric discharge machine in FIG. 2, the electric discharge machine is not limited to only the die sinking electric discharge machine 25, and the configuration of the electric discharge machine and the setting method of the shank 11 are arbitrary. is there. FIG.
The configuration of the wire electric discharge machine 50 and the method of setting the shank 11 are arbitrary.
【００３１】[0031]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１では、シャンクにチップをろう付けする
チップろう付け工程と、チップに電極でシャンクの油穴
より小径のスタート孔を穿設するスタート孔加工工程
と、ワイヤ放電加工機でチップにシャンクの油穴に対し
て同径の油穴を形成する油穴加工工程と、でチップの油
穴を形成するので、シャンクの油穴にきずがつくことは
なく、生産効率の向上を図ることができる。また、チッ
プの油穴はシャンクの中心軸線と平行になり、チップの
油穴の出口の位置がずれることはなく、チップの油穴の
加工精度の向上を図ることができる。さらに、チップの
油穴を形成する電極を必要とせず、チップの油穴に合せ
て直径の異なる電極を造る必要はない。従って、生産効
率の向上を図ることができる。According to the present invention, the following effects are exhibited by the above configuration. In claim 1, a tip brazing step of brazing the tip to the shank, a start hole forming step of drilling a start hole smaller in diameter than the oil hole of the shank with an electrode in the tip, and a shaping of the shank to the tip by a wire electric discharge machine. Since the oil hole of the tip is formed by the oil hole processing step of forming an oil hole of the same diameter as the oil hole, the oil hole of the shank is not scratched and the production efficiency can be improved. . Further, the oil hole of the chip is parallel to the central axis of the shank, so that the position of the outlet of the oil hole of the chip does not shift, and the processing accuracy of the oil hole of the chip can be improved. Further, there is no need for an electrode forming an oil hole in the chip, and there is no need to manufacture electrodes having different diameters in accordance with the oil hole in the chip. Therefore, it is possible to improve the production efficiency.
【図１】本発明に係るチップろう付け工程の説明図FIG. 1 is an explanatory view of a chip brazing step according to the present invention.
【図２】本発明に係るスタート孔加工工程の第１説明図FIG. 2 is a first explanatory view of a start hole processing step according to the present invention.
【図３】本発明に係るスタート孔加工工程の第２説明図FIG. 3 is a second explanatory view of a start hole processing step according to the present invention.
【図４】本発明に係る油穴加工工程の第１説明図FIG. 4 is a first explanatory view of an oil hole forming process according to the present invention.
【図５】本発明に係る油穴加工工程の第２説明図FIG. 5 is a second explanatory view of the oil hole forming step according to the present invention.
【図６】本発明に係るチップの油穴の形成方法を用いた
ドリルの斜視図FIG. 6 is a perspective view of a drill using the method for forming an oil hole in a chip according to the present invention.
【図７】従来の油穴の形成方法の一例を示す図FIG. 7 is a diagram showing an example of a conventional oil hole forming method.
１１…シャンク、１３，１４…シャンクの油穴、１６…
チップ半完成品、２１…シャンクの端部、２５…放電加
工機（形彫放電加工機）、３６…電極、４５，４６…ス
タート孔、５０…ワイヤ放電加工機、５５…ワイヤ、６
１，６２…チップの油穴、Ｄｈ…シャンクの油穴の直
径、Ｄｔ…チップの油穴の直径。11 ... shank, 13, 14 ... shank oil hole, 16 ...
Chip semi-finished product, 21: shank end, 25: electric discharge machine (shaving electric discharge machine), 36: electrode, 45, 46 ... start hole, 50: wire electric discharge machine, 55: wire, 6
1, 62: oil hole of tip, Dh: diameter of oil hole of shank, Dt: diameter of oil hole of chip.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 正富 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 (72)発明者 石橋 智実 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 Ｆターム(参考） 3C059 AA01 AB01 AB04 DA03 DA06 JA11 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masatomi Ito 1-10-1 Shinsayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd. (72) Inventor Tomomi Ishibashi 1-10-1 Shinsayama, Sayama City, Saitama Prefecture DA Engineering Co., Ltd. F term (reference) 3C059 AA01 AB01 AB04 DA03 DA06 JA11
Claims (1)
プをろう付けするチップろう付け工程と、 このチップを付けたシャンクを放電加工機にセットし、
チップに電極で前記油穴より小径のスタート孔を穿設す
るスタート孔加工工程と、 シャンクをワイヤ放電加工機にセットし、スタート孔並
びに油穴にワイヤを通すとともに、チップに前記油穴に
対して同径の油穴を形成する油穴加工工程と、からなる
ことを特徴とするチップの油穴の形成方法。1. A tip brazing step of brazing a tip to an end of a shank in which an oil hole has been previously formed, and setting the shank with the tip in an electric discharge machine.
A start hole forming step of drilling a start hole having a smaller diameter than the oil hole with an electrode on the chip, and setting the shank in a wire electric discharge machine, passing a wire through the start hole and the oil hole, And forming an oil hole having the same diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000324996A JP4489276B2 (en) | 2000-10-25 | 2000-10-25 | Chip oil hole forming method and wire electric discharge machine used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000324996A JP4489276B2 (en) | 2000-10-25 | 2000-10-25 | Chip oil hole forming method and wire electric discharge machine used therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002126953A true JP2002126953A (en) | 2002-05-08 |
| JP4489276B2 JP4489276B2 (en) | 2010-06-23 |
Family
ID=18802440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000324996A Expired - Fee Related JP4489276B2 (en) | 2000-10-25 | 2000-10-25 | Chip oil hole forming method and wire electric discharge machine used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4489276B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643032A (en) * | 2014-11-14 | 2016-06-08 | 中国航空工业第六八研究所 | Machining method for radial high-precision small square holes of rotary part |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976799A (en) * | 1982-07-02 | 1984-05-01 | スタームファーグ | Punch-cutter and manufacture of said punch-cutter |
| JPH02279230A (en) * | 1989-04-20 | 1990-11-15 | Seibu Electric & Mach Co Ltd | Small hole electric discharge machining method |
| JPH071215A (en) * | 1993-06-11 | 1995-01-06 | Toshiba Tungaloy Co Ltd | Gun drill |
-
2000
- 2000-10-25 JP JP2000324996A patent/JP4489276B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976799A (en) * | 1982-07-02 | 1984-05-01 | スタームファーグ | Punch-cutter and manufacture of said punch-cutter |
| JPH02279230A (en) * | 1989-04-20 | 1990-11-15 | Seibu Electric & Mach Co Ltd | Small hole electric discharge machining method |
| JPH071215A (en) * | 1993-06-11 | 1995-01-06 | Toshiba Tungaloy Co Ltd | Gun drill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643032A (en) * | 2014-11-14 | 2016-06-08 | 中国航空工业第六八研究所 | Machining method for radial high-precision small square holes of rotary part |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4489276B2 (en) | 2010-06-23 |
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