JPH04164520A - Electrode for electric discharge machining and manufacturing method therefor - Google Patents
Electrode for electric discharge machining and manufacturing method thereforInfo
- Publication number
- JPH04164520A JPH04164520A JP29112390A JP29112390A JPH04164520A JP H04164520 A JPH04164520 A JP H04164520A JP 29112390 A JP29112390 A JP 29112390A JP 29112390 A JP29112390 A JP 29112390A JP H04164520 A JPH04164520 A JP H04164520A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- pipe member
- machining
- working
- electric discharge
- 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
- 238000003754 machining Methods 0.000 title claims description 39
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 14
- 239000007772 electrode material Substances 0.000 claims description 12
- 238000009760 electrical discharge machining Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000003252 repetitive effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000007751 thermal spraying Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えば型彫り放電加工用の電極及びその製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to, for example, an electrode for die sinking electric discharge machining and a method for manufacturing the same.
（従来の技術）
従来、例えばプレス型、モールド型、鋳、鍛造型等の製
作にあたって放電加工機を用いて製造することがある。(Prior Art) Conventionally, for example, press molds, mold molds, casting molds, forging molds, etc. are sometimes manufactured using electric discharge machines.
すなわち絶縁性の加工液の中で型面に倣った形状の電極
とワークを微小間隙で対向させ、短時間のパルス性アー
ク放電を繰り返すことによって除去加工を行なうもので
、高硬度、強靭性の材料であっても容易に加工出来、し
かも複雑な形状を精度よく加工出来ることから、特に金
型製作には広く用いられている。In other words, in an insulating machining fluid, an electrode shaped like the mold surface and a workpiece are faced with a small gap, and removal machining is performed by repeating short-term pulsed arc discharge. It is widely used, especially in the production of molds, because it can easily process any material and can process complex shapes with high precision.
しかしこの加工法は、加工速度が遅いという難点があり
、特に加工液中の加工屑の排除、絶縁性、消イオン、冷
却等は加工の促進に大きく影響し、又、加工屑か溜ると
誤放電を起こし易くなって加工不良を招くことから、加
工中に一旦加工を中断して加工液中の加工屑等を排除し
ながら加工することも行なわれている。又一部では、ワ
ークの周囲から加工面に向けて流体を吹き付けて加工屑
を吹き飛ばすようなことが行なわれることがある。However, this processing method has the disadvantage of slow processing speed, and in particular, the removal of processing waste in the processing fluid, insulation, deionization, cooling, etc. greatly affect the promotion of processing, and if processing waste accumulates, it may cause errors. Since electrical discharge is likely to occur and machining defects are caused, machining is sometimes interrupted during machining to remove machining debris from the machining fluid. In some cases, fluid is sprayed from around the workpiece toward the machined surface to blow away the machined debris.
（発明が解決しようとする課題）
しかし、従来のように加工中に加工屑を排除する際、−
旦加工を中断して掃除するようなやり方では、効率が悪
く、又一部で行なわれているように、加工液中の加工面
に向けて別の装置からエア等を吹き付けて加工屑を吹き
飛ばすような方法では、加工面の形状が複雑であれば行
き渡らない箇所が生ずるという不具合があった。(Problem to be solved by the invention) However, when removing machining waste during machining as in the past, -
It is inefficient to interrupt machining and clean it, and as is done in some cases, blow air etc. from another device toward the machining surface in the machining fluid to blow away machining debris. Such a method has the problem that if the shape of the machined surface is complex, there will be some areas where it cannot be covered.
（課題を解決するための手段）
かかる課題を解決するため、本発明は溶射した電極材料
と導電性パイプ部材を一体化して電極を形成し、このパ
イプ部材の中に加工屑排除用の流体を導通させることと
した。(Means for Solving the Problem) In order to solve the problem, the present invention integrates a thermally sprayed electrode material and a conductive pipe member to form an electrode, and injects a fluid for removing processing waste into this pipe member. I decided to make it conductive.
又、電極の製造方法において、導電性パイプ部材の先端
をモデルに当接させ、該モデル表面に電極材料を溶射し
て電極を形成するとともに、このパイプ部材内に流体を
導入してモデルから電極を離型させるようにした。In addition, in the method for manufacturing an electrode, the tip of a conductive pipe member is brought into contact with a model, an electrode material is sprayed onto the surface of the model to form an electrode, and a fluid is introduced into the pipe member to remove the electrode from the model. was released from the mold.
（作用）
溶射した電極材料と導電性パイプ部材を一体にした電極
を形成し、この電極でワークを加工中、適宜前記パイプ
部材から加工屑排除用の流体を導通させて加工面側から
噴出させ加工屑を吹き飛ばす。このため加工を一時中断
することなく効率が良い。しかも加工屑の溜まり易い場
所に集中的に設けることも出来る。又、場合によっては
放電時に発生するガス抜きとしても利用することも出来
る。(Function) An electrode is formed by integrating the thermally sprayed electrode material and a conductive pipe member, and while a workpiece is being processed with this electrode, a fluid for removing processing waste is appropriately conducted through the pipe member and ejected from the processing surface side. Blow away processing waste. Therefore, there is no need to temporarily interrupt processing, resulting in high efficiency. In addition, they can be provided centrally in locations where processing waste is likely to accumulate. In some cases, it can also be used to vent gas generated during discharge.
又かかる電極の製作にあたって、予め導電パイプ材料の
先端をモデルに当接させ、次いでモデル表面に電極材料
を溶射すれば容易に一体構造化することが出来、しかも
離型の際該パイプ材料内に流体を導通せしめれば、モデ
ルから容易に離型出来る。In addition, when manufacturing such an electrode, it is possible to easily form an integral structure by contacting the tip of the conductive pipe material with the model in advance and then thermally spraying the electrode material onto the model surface. If fluid is conducted, it can be easily released from the model.
（実施例）
本発明の放電加工用の電極及びその製造方法の実施例に
ついて添付図面に基づき説明する。(Example) Examples of the electrode for electric discharge machining and the manufacturing method thereof of the present invention will be described based on the accompanying drawings.
第１図は本発明の電極を適用した放電加工機の基礎構成
図である。FIG. 1 is a basic configuration diagram of an electrical discharge machine to which the electrode of the present invention is applied.
第１図に示すように、放電加工機１の加工槽２には加工
液３が充たされ、加工槽２中の加工テーブル４上には、
被加工物Ｗが位置決めされる。As shown in FIG. 1, the machining tank 2 of the electric discharge machine 1 is filled with machining fluid 3, and the machining table 4 in the machining tank 2 is
The workpiece W is positioned.
一方、この被加工物Ｗの上方には、サーボモータ或いは
油圧等で制御される送り機構５が設けられ、この送り機
構５の下方に工具としての電極６が取り付けられる。そ
してこの電極６で３次元形状を転写加工すべく、被加工
物Ｗとの対向面側は所望の形状にかたどられ、又電極６
と被加工物Ｗ間には、パルス発振器等の加工電源７が接
続される。On the other hand, above the workpiece W, a feeding mechanism 5 controlled by a servo motor or hydraulic pressure is provided, and below this feeding mechanism 5, an electrode 6 as a tool is attached. In order to transfer a three-dimensional shape using this electrode 6, the surface facing the workpiece W is shaped into a desired shape, and the electrode 6
A machining power source 7 such as a pulse oscillator is connected between and the workpiece W.
そして周知のように加工液３中で電極６を被加工物Ｗに
接近させ、僅かな間隙を保ってアーク放電を繰り返し発
生させ、又送り機構５によって繰り返し放電に適する電
極間隙を維持して、放電によって被加工物Ｗの表面に微
小クレータを生じさせて微量ずつ除去してゆく訳である
が、この原生じる加工屑を排除する排除機構が設けられ
ている。Then, as is well known, the electrode 6 is brought close to the workpiece W in the machining fluid 3, and arc discharge is repeatedly generated while maintaining a small gap, and the electrode gap suitable for repeated discharge is maintained by the feeding mechanism 5. Microcraters are created on the surface of the workpiece W by the electric discharge and removed little by little, and a removal mechanism is provided to remove the resulting processing debris.
すなわちこの排除機構は、電極６に埋め込まれた複数の
バイブ部材９と、このパイプ部材９中に加工液を導入す
るポンプ１０からなり、このポンプ１０には、加工液３
を吸い上げるためのホース１１が接続されている。つま
りこのホース１１から吸い上げた加工液３をバイブ部材
９に送り込み、第２図に示すように被加工物Ｗに対向す
るパイプ部材９先端から吹き付けて加工屑を排除しよう
とするものである。尚、この加工屑排除用の流体は、加
工液３の代りにエア等の気体を用いるようにしても良い
。That is, this removal mechanism consists of a plurality of vibe members 9 embedded in the electrode 6 and a pump 10 that introduces the machining fluid into the pipe member 9.
A hose 11 is connected to suck up the water. That is, the machining liquid 3 sucked up from the hose 11 is sent to the vibrator member 9, and is sprayed from the tip of the pipe member 9 facing the workpiece W to remove machining debris, as shown in FIG. Note that, instead of the machining liquid 3, a gas such as air may be used as the fluid for removing machining debris.
次に本発明の電極の細部構成および製造方法について、
第３図以下を用いて説明する。尚、第３図及び第４図は
電極の縦断面図及び平面図、第５図は電極の製造法を示
す工程図、第６図は溶射法による製造方法を示す工程図
である。Next, regarding the detailed structure and manufacturing method of the electrode of the present invention,
This will be explained using FIG. 3 and subsequent figures. 3 and 4 are a longitudinal sectional view and a plan view of the electrode, FIG. 5 is a process diagram showing a method of manufacturing the electrode, and FIG. 6 is a process diagram showing a manufacturing method using a thermal spraying method.
放電加工用の電極は、主として機械加工によって切削成
形されることが多いが、溶射によって電極を製造する場
合には、第６図に示すようにモデル１３表面に溶射ガン
等によって電極材料１４を溶射して被覆層を形成し、こ
の電極材料１４を石膏、或いは樹脂等のバックアツプ体
１５で補強して電極１６を形成する。Electrodes for electrical discharge machining are often cut and formed mainly by machining, but when manufacturing electrodes by thermal spraying, the electrode material 14 is thermally sprayed onto the surface of the model 13 using a thermal spray gun or the like, as shown in FIG. This electrode material 14 is reinforced with a back-up material 15 such as plaster or resin to form an electrode 16.
本発明の場合は、このような溶射法によって、導電性パ
イプ部材としての銅製のパイプ部材９を一体的に形成し
たものであり、第５図に示すように予めパイプ部材９を
耐熱製樹脂等のモデル１８の所望の位置に当接位置決め
しくＡ図）、次いでこのモデル１８の表面に電極材料１
９（実施例では銅）を溶射してパイプ部材９と電極材料
１９を一体化する（Ｂ図）。次いでこの周囲をバックア
ツプ体２０で補強した後、ポンプ２１から気体又は液体
の流体をパイプ部材９内に導入することによって、電極
はモデル１３から容易に離型出来る。In the case of the present invention, the copper pipe member 9 as a conductive pipe member is integrally formed by such a thermal spraying method, and as shown in FIG. (Fig. A), and then apply electrode material 1 to the surface of this model 18.
9 (copper in the example) to integrate the pipe member 9 and the electrode material 19 (Figure B). Next, after reinforcing the periphery with a back-up body 20, the electrode can be easily released from the model 13 by introducing gas or liquid fluid into the pipe member 9 from the pump 21.
つまり第３図、第４図にしめずような電極６が完成し、
パイプ部材９の上端開口部にポンプ１０（第１図）接続
用のホースが取り付けられ、下端開口部が加工面に臨む
こととなる。尚、バックアツプ体２０の中には所定箇所
に複数の補強パイプ２４が埋め込まれ、又電極６の上面
には送り機構５への取付部２２を備えた取付板２３がパ
イプ部材９に溶接される。In other words, the electrode 6 as shown in Figures 3 and 4 is completed.
A hose for connecting the pump 10 (FIG. 1) is attached to the upper end opening of the pipe member 9, and the lower end opening faces the processing surface. A plurality of reinforcing pipes 24 are embedded at predetermined locations in the back-up body 20, and a mounting plate 23 having a mounting portion 22 for the feeding mechanism 5 is welded to the pipe member 9 on the upper surface of the electrode 6. Ru.
このように構成した本発明の電極６において第２図に示
すように加工屑排除用の流体を流通させて、加工屑を排
除させることについては既述の通りであるが、このパイ
プ部材９の設ける位置は、特に加工屑の溜り易い箇所を
選定することで一層効率的となる。すなわち被加工物Ｗ
の周囲から流体を吹きつけただけでは除去できない加工
屑でも有効に除去出来る。又このパイプ部材９は必要に
応じて放電時発生するガスを抜くために使用しても良い
。As described above, in the electrode 6 of the present invention configured as described above, as shown in FIG. The efficiency can be improved by selecting a location where processing debris is likely to accumulate. That is, the workpiece W
Even machining debris that cannot be removed by simply spraying fluid around the surface can be effectively removed. Further, this pipe member 9 may be used to vent gas generated during discharge, if necessary.
（発明の効果）
以上のように本発明の放電加工用の電極及びその製造方
法は、電極の中に加工屑排除用のパイプ部材を一体化し
て構成するようにしたため、加工屑排除用の流体出口が
直接加工面の加工屑に臨むこととなり、効率の良い排除
が可能となる。又、加工屑が残存して加工精度を低下さ
せるような不具合も防止できる。(Effects of the Invention) As described above, the electrode for electric discharge machining and the method for manufacturing the same of the present invention has a pipe member for removing machining debris integrated into the electrode, so that a fluid for eliminating machining debris is provided. The outlet directly faces the machining debris on the machining surface, allowing efficient removal. In addition, it is possible to prevent defects such as residual machining debris that degrades machining accuracy.
一方電極の製造にあっては、溶射法により極めて簡単な
構成でパイプ部材を一体化し得、又離型も容易である。On the other hand, in the production of electrodes, pipe members can be integrated with an extremely simple structure by thermal spraying, and mold release is also easy.
第１図は本発明の電極を適用した放電加工機の基礎構成
図、第２図はパイプ部材内を流動する加工屑排除用の流
体の流れを示す拡大図、第３図、第４図は電極を示し第
３図が縦断面図、第４図が平面図、第５図は電極の製造
法を示す工程図、第６図は溶射法による製造法を示す工
程図である。
尚同図中、１は放電加工機、５は送り機構、６は電極、
９はパイプ部材、１０はポンプ、１３゜１８はモデル、
１４．１９は電極材料、２１はポンプ、Ｗは被加工物を
示す。
特 許 出 願 人 本田技研工業株式会社代 理
人 弁理士 下 １） 容−即問 弁理士
大 橋 邦 産量 弁理士 小 山
有第４図
（Ａ） （Ｂ）
第５図
第６図Fig. 1 is a basic configuration diagram of an electric discharge machine to which the electrode of the present invention is applied, Fig. 2 is an enlarged view showing the flow of fluid for removing machining debris flowing inside a pipe member, Figs. 3 and 4 are 3 is a longitudinal cross-sectional view showing the electrode, FIG. 4 is a plan view, FIG. 5 is a process diagram showing a method of manufacturing the electrode, and FIG. 6 is a process diagram showing a manufacturing method using a thermal spraying method. In the figure, 1 is an electric discharge machine, 5 is a feed mechanism, 6 is an electrode,
9 is a pipe member, 10 is a pump, 13° 18 is a model,
14 and 19 are electrode materials, 21 is a pump, and W is a workpiece. Patent applicant: Honda Motor Co., Ltd. Agent
Person Patent Attorney Part 2 1) Yong-Immediate Question Patent Attorney
Kuni Ohashi Production Patent Attorney Koyama
Figure 4 (A) (B) Figure 5 Figure 6
Claims (2)
て電極を形成し、このパイプ部材の中に加工屑排除用の
流体を導通せしめることを特徴とする放電加工用の電極
。(1) An electrode for electrical discharge machining, characterized in that an electrode is formed by integrating a thermally sprayed electrode material and a conductive pipe member, and a fluid for removing machining debris is conducted through the pipe member.
せ、該モデル表面に電極材料を溶射してパイプ部材と電
極材料とを一体にして電極を形成する工程と、該パイプ
部材内に流体を導入してモデルから電極を離型する工程
からなることを特徴とする放電加工用の電極の製造方法
。(2) In a manufacturing method for manufacturing electrodes for electrical discharge machining, this method involves bringing the tip of a conductive pipe member into contact with a model, and spraying electrode material onto the surface of the model to integrate the pipe member and the electrode material. 1. A method of manufacturing an electrode for electric discharge machining, comprising the steps of: forming an electrode in the pipe member; and releasing the electrode from the model by introducing a fluid into the pipe member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29112390A JPH04164520A (en) | 1990-10-29 | 1990-10-29 | Electrode for electric discharge machining and manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29112390A JPH04164520A (en) | 1990-10-29 | 1990-10-29 | Electrode for electric discharge machining and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04164520A true JPH04164520A (en) | 1992-06-10 |
Family
ID=17764757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29112390A Pending JPH04164520A (en) | 1990-10-29 | 1990-10-29 | Electrode for electric discharge machining and manufacturing method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04164520A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005334983A (en) * | 2004-05-24 | 2005-12-08 | Honda Motor Co Ltd | Method of manufacturing die |
| US7598471B2 (en) * | 2001-05-01 | 2009-10-06 | Ebara Corporation | Method of electric discharge machining a cathode for an electron gun |
-
1990
- 1990-10-29 JP JP29112390A patent/JPH04164520A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7598471B2 (en) * | 2001-05-01 | 2009-10-06 | Ebara Corporation | Method of electric discharge machining a cathode for an electron gun |
| JP2005334983A (en) * | 2004-05-24 | 2005-12-08 | Honda Motor Co Ltd | Method of manufacturing die |
| JP4562423B2 (en) * | 2004-05-24 | 2010-10-13 | 本田技研工業株式会社 | Mold manufacturing method |
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