JPH02198717A - Electrode for wire electric discharging - Google Patents
Electrode for wire electric dischargingInfo
- Publication number
- JPH02198717A JPH02198717A JP21839988A JP21839988A JPH02198717A JP H02198717 A JPH02198717 A JP H02198717A JP 21839988 A JP21839988 A JP 21839988A JP 21839988 A JP21839988 A JP 21839988A JP H02198717 A JPH02198717 A JP H02198717A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- good
- machining
- mechanical strength
- wire electrical
- 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
- 238000007599 discharging Methods 0.000 title abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000011162 core material Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 238000009763 wire-cut EDM Methods 0.000 claims description 22
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052725 zinc Inorganic materials 0.000 claims description 10
- 239000011701 zinc Substances 0.000 claims description 10
- 229910001369 Brass Inorganic materials 0.000 claims description 7
- 239000010951 brass Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052793 cadmium Inorganic materials 0.000 claims description 6
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 238000003754 machining Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004043 responsiveness Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明はワイヤ放電加工用電極、特に機械的強度が強く
、かつ高速加工に適したワイヤ放電加工用電極に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electrode for wire electrical discharge machining, and particularly to an electrode for wire electrical discharge machining that has strong mechanical strength and is suitable for high-speed machining.
〈従来の技術〉
ワイヤ放電加工は、被工作物と電極との間に放電を行わ
せ電極と被工作物とを相対的に移動させることにより被
工作物を所望の形状に切断加工するものである。<Conventional technology> Wire electrical discharge machining is a method of cutting a workpiece into a desired shape by causing electrical discharge between the workpiece and an electrode and moving the electrode and workpiece relative to each other. be.
ワイヤ放電加工では、これに使用する電極の良否が加工
速度や加工精度などに直接大きな影響をおよぼすため加
工に適した電極材料を用いることが肝要である。In wire electrical discharge machining, the quality of the electrodes used has a direct and significant effect on machining speed, machining accuracy, etc., so it is important to use electrode materials suitable for machining.
一般に電極に要求される特性として次のようなものが挙
げられる。The following characteristics are generally required for electrodes.
■機械的強度： 電極のぶれを防ぐため高張力をかける
ので引張強さが強く、またワイヤ放電加工中に断線しな
いように引張強さが強く降伏点が高いことが要求される
。■Mechanical strength: High tensile strength is applied to prevent the electrode from wobbling, so it must have high tensile strength, and it must also have high tensile strength and a high yield point to prevent wire breakage during wire electrical discharge machining.
■加工速度： ワイヤ放電加工の加工速度は、他の機械
加工などと比較して遅いので、加工速度をより早くする
必要があり、電極には高電流を流せるような良導電性材
料が適している。■ Machining speed: The machining speed of wire electrical discharge machining is slower than that of other machining processes, so it is necessary to increase the machining speed, and a highly conductive material that can flow a high current is suitable for the electrode. There is.
■放電特性： 放電特性は加工速度、被工作物の寸法精
度、電極の断線に影響する要因であり、放電特性が良い
ことが要求される。■Discharge characteristics: Discharge characteristics are factors that affect machining speed, dimensional accuracy of the workpiece, and electrode breakage, and good discharge characteristics are required.
■接触抵抗： 一般に、電極への電気供給は給電ダイス
に電極を接触させて行っており、このときの接触抵抗を
少なくし、加工電源の制御に対する放電の応答性を向上
させ加工速度を従来より高めることが要求される。■Contact resistance: Generally, electricity is supplied to the electrode by bringing the electrode into contact with the power supply die.The contact resistance at this time is reduced, and the responsiveness of the discharge to the control of the machining power source is improved, making the machining speed faster than before. It is required to increase.
■価格： 電極は消耗品であるので特に安価であること
が要求される。■Price: Since electrodes are consumable items, they are particularly required to be inexpensive.
一方、ワ・イヤ放電加工用電極としては、従来直径０．
１−以下の細線ではタングステン、それ以上の直径の太
線では鋼、黄銅の電極又は黄銅の芯線に亜鉛などを被覆
した被Ｍ電極などが使われてきた。On the other hand, conventional wire electrical discharge machining electrodes have a diameter of 0.
Tungsten has been used for thin wires of 1 mm or less in diameter, and steel or brass electrodes, or M-covered electrodes in which a brass core wire is coated with zinc or the like have been used for thick wires with diameters larger than 1.
〈発明が解決しようとする課題〉
従来使用しているワイヤ放電加工用電極は、つぎのよう
に上記要求を満たしておらず、より改善されたワイヤ放
電加工用電極が望まれている。<Problems to be Solved by the Invention> Conventionally used electrodes for wire electrical discharge machining do not meet the above requirements as described below, and a more improved electrode for wire electrical discharge machining is desired.
■タングステンの電極は、機械的強度は強いが放電特性
が悪く又高価である。■Tungsten electrodes have strong mechanical strength, but have poor discharge characteristics and are expensive.
■銅の電極は、良導電性材料で電流容量は大きいが機械
的強度が弱く、又放電特性も悪い。■Copper electrodes are a good conductive material and have a large current capacity, but have weak mechanical strength and poor discharge characteristics.
■黄銅の電極は、放電特性は良いが、導電性が悪く加工
速度が遅い。■Brass electrodes have good discharge characteristics, but poor conductivity and slow machining speed.
■被覆電極は、ａ械的強度が強く放電特性もよいが、価
格が高い。(2) Covered electrodes have strong mechanical strength and good discharge characteristics, but are expensive.
■一部で使用されている鋼の電極は、機械的強度は強い
が放電特性、導電性が悪い。■The steel electrodes used in some areas have strong mechanical strength but poor discharge characteristics and conductivity.
〈課題を解決するための手段〉
本発明は、■芯材として機械的強度の強い材料を、中間
被覆材として放電特性の良い材料を、表面被覆材として
食型導材料を薄く用いたワイヤ放電加工用電極であり、
■機械的強度の強い材料として黄銅又は鋼を用いた前項
■記載のワイヤ放電加工用電極で、■良導電材料として
銀、１１４．アルミニウムのうちいずれか１種類の材料
を用いた前項■記載のワイヤ放電加工用電極で、■放電
特性の良い材料として亜鉛又はカドミウムを用いた前項
■記載のワイヤ放電加工用電極である。<Means for Solving the Problems> The present invention provides: (1) a wire discharge using a material with strong mechanical strength as a core material, a material with good discharge characteristics as an intermediate coating material, and a thin edible conductive material as a surface coating material; It is a processing electrode,
■The electrode for wire electrical discharge machining described in the previous paragraph (■) using brass or steel as a material with strong mechanical strength, ■silver as a good conductive material, 114. The electrode for wire electrical discharge machining as described in the previous item (2) uses any one type of material among aluminum, and (2) the electrode for wire electrical discharge machining as described in the previous item (2) uses zinc or cadmium as a material with good discharge characteristics.
〈作 用〉
本発明に係るワイヤ放電加工用電極は、芯材として機械
的強度の強い黄銅又は鋼を用いたので、電極のぶれや断
線は少なく、表面被覆材として導電性のよい銀、銅又は
アルミニウムを用いたので接触抵抗がドがりＴ４源制御
に対する放電の応答性がよくなり加工速度が早く、さら
に中間被覆材として放電特性の良い亜鉛又はカドミウム
を用いたので、加工速度などが向上する。<Function> Since the electrode for wire electrical discharge machining according to the present invention uses brass or steel with strong mechanical strength as the core material, there is little wobbling or disconnection of the electrode, and silver or copper with good conductivity is used as the surface coating material. Or, since aluminum is used, the contact resistance is low and the responsiveness of the discharge to T4 source control is improved, resulting in faster machining speed, and since zinc or cadmium, which has good discharge characteristics, is used as the intermediate coating material, the machining speed, etc. is improved. .
つぎに発明をなすに至った経過について説明する。Next, the process that led to the invention will be explained.
ワイヤ放電加工では電極のぶれを防ぐため高張力をかけ
られるよう１ｔ８ｉＩに機械的強度の強い高強度材料を
用いる。In wire electrical discharge machining, a high-strength material with strong mechanical strength is used for 1t8iI so that high tension can be applied to prevent electrode wobbling.
また、高速加工を行うため電極には高電流を流せるよう
良導電性材料が好ましい、しかし、良導電性材料は高強
度材料ではないので、１つの材料で両者の条件を満足さ
せることは難しく、２種！ｎ以上の材料を用いることに
した。In addition, in order to perform high-speed processing, it is preferable to use a material with good conductivity so that a high current can flow through the electrode. However, since a material with good conductivity is not a high-strength material, it is difficult to satisfy both conditions with one material. 2 types! It was decided to use a material with n or more.
さらに、Ｔｒｉ極への電気供給は給電ダイスに電極を接
触させることにより行っているので、ここでの接触抵抗
を低くすることが肝要である。Furthermore, since electricity is supplied to the Tri electrode by bringing the electrode into contact with the power supply die, it is important to reduce the contact resistance here.
本発明の主な特徴は、芯材に高強度材料を用いその表面
被覆材として銀、銅、アルミニウムなど良導電性材料を
用いることにより給電ダイス部での接触抵抗を下げ加工
電源の制御に対する放電の応答性を向上させ加工速度を
従来より高めたことである。The main feature of the present invention is that the core material is made of a high-strength material and the surface coating material is made of a highly conductive material such as silver, copper, or aluminum, thereby reducing the contact resistance at the power supply die part and discharging it to control the machining power supply. This improves the responsiveness of the machine and increases the machining speed compared to the previous model.
一方、亜鉛、カドミウムは、放電特性がよく加工速度を
高める効果を有している。しかし、これら金属は低沸点
材料のため放電開始時にすぐ蒸発してしまう、よって本
発明では高強度な芯材の上に放電特性の良い亜鉛又はカ
ドミウムを被覆し、その上に薄く銀、銅、アルミニウム
など良導電性材料を薄く被覆した。これにより、給電ダ
イス部での接触抵抗を下げると共に、亜鉛、カドミウム
の蒸発時間をコントロールし、また芯材の露出を防ぎそ
の効果を最大限に発揮させることで加工速度を高めた。On the other hand, zinc and cadmium have good discharge characteristics and have the effect of increasing the machining speed. However, since these metals are low-boiling point materials, they evaporate immediately at the start of discharge. Therefore, in the present invention, a high-strength core material is coated with zinc or cadmium, which has good discharge characteristics, and a thin layer of silver, copper, etc. Thinly coated with a highly conductive material such as aluminum. This reduces the contact resistance at the power feeding die, controls the evaporation time of zinc and cadmium, prevents the core material from being exposed, maximizes its effectiveness, and increases processing speed.
〈実施例〉 以下に本発明の実施例をあげて具体的に説明する。<Example> EXAMPLES The present invention will be specifically explained below by giving examples.
実施例１として炭素鋼の芯材に亜鉛を２５ｐｌＩ、その
上に銅をｌ−電気メツキ法により付着させた直径０．２
ｓｍのワイヤ放電加工用電極を作製した。また、実施例
２として黄銅の芯材に亜鉛を２５ｐｆｆｌ、その上にア
ルミニウムを電気メツキ法によりＩｎ付着させた直径０
．２ｍｍのワイヤ放電加工用電極を作製した。さらに、
比較例として炭素鋼の芯材の上に亜鉛２５−をメツキし
た直径０．２ａ＋ａのワイヤ放電加工用電極も作製した
。２０■厚のＳ Ｋ Ｄ −１１材を被加工物として上
記電極を用いワイヤ放電加工テストを行い、テスト結果
を第１図に示す。As Example 1, a carbon steel core material with a diameter of 0.2 plI was coated with 25 plI of zinc, and copper was deposited thereon by the l-electroplating method.
An electrode for sm wire electrical discharge machining was produced. In addition, as Example 2, 25 pffl of zinc was applied to a brass core material, and aluminum was deposited on top of it by electroplating.
．． A 2 mm wire electric discharge machining electrode was produced. moreover,
As a comparative example, an electrode for wire electrical discharge machining with a diameter of 0.2a+a was also produced by plating a carbon steel core material with 25% zinc. A wire electrical discharge machining test was conducted using the above electrode on a 20 mm thick S K D-11 material as a workpiece, and the test results are shown in FIG.
本実施例によるものは、比較例に比べ加工速度が平均で
２０％以上向上したことが第１図から明らかである。It is clear from FIG. 1 that the machining speed of the present example was improved by more than 20% on average compared to the comparative example.
〈発明の効果〉
本発明に係るワイヤ放電加工用電極は、機械的強度は従
来品に劣らず、加工速度は従来の電極よりも早い、また
特別高価な材料を使用しないので安価である。<Effects of the Invention> The electrode for wire electrical discharge machining according to the present invention has mechanical strength comparable to that of conventional products, has a faster machining speed than conventional electrodes, and is inexpensive because no particularly expensive materials are used.
第１図は、加工速度と電流比との関係を示すグラフであ
る。FIG. 1 is a graph showing the relationship between machining speed and current ratio.
Claims (1)
して放電特性の良い材料を、表面被覆材として良電導材
料を薄く用いたワイヤ放電加工用電極。 ２、機械的強度の強い材料として黄銅又は鋼を用いた請
求項１記載のワイヤ放電加工用電極。 ３、良電導性材料として銀、銅、アルミニウムのうちい
ずれか１種類の材料を用いた請求項１記載のワイヤ放電
加工用電極。 ４、放電特性の良い材料として亜鉛又はカドミウムを用
いた請求項１記載のワイヤ放電加工用電極。[Claims] 1. An electrode for wire electrical discharge machining using a material with strong mechanical strength as a core material, a material with good discharge characteristics as an intermediate coating material, and a thin layer of a good conductive material as a surface coating material. 2. The electrode for wire electrical discharge machining according to claim 1, wherein brass or steel is used as the material with high mechanical strength. 3. The electrode for wire electrical discharge machining according to claim 1, wherein any one of silver, copper, and aluminum is used as the good conductive material. 4. The electrode for wire electrical discharge machining according to claim 1, wherein zinc or cadmium is used as the material with good discharge characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21839988A JPH02198717A (en) | 1988-09-02 | 1988-09-02 | Electrode for wire electric discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21839988A JPH02198717A (en) | 1988-09-02 | 1988-09-02 | Electrode for wire electric discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02198717A true JPH02198717A (en) | 1990-08-07 |
Family
ID=16719300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21839988A Pending JPH02198717A (en) | 1988-09-02 | 1988-09-02 | Electrode for wire electric discharging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02198717A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4104387A1 (en) * | 1991-02-09 | 1992-08-13 | Sparctec Erodiertechnik | Electroerosion cutting electrode - has high tensile strength non-conductive non-metal wire within a conductive mantle |
| EP4230335A1 (en) * | 2022-01-28 | 2023-08-23 | Raytheon Technologies Corporation | Edm electrode with enriched surface region |
-
1988
- 1988-09-02 JP JP21839988A patent/JPH02198717A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4104387A1 (en) * | 1991-02-09 | 1992-08-13 | Sparctec Erodiertechnik | Electroerosion cutting electrode - has high tensile strength non-conductive non-metal wire within a conductive mantle |
| EP4230335A1 (en) * | 2022-01-28 | 2023-08-23 | Raytheon Technologies Corporation | Edm electrode with enriched surface region |
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