JPS5894925A - Wire electrode for electric discharge machining - Google Patents
Wire electrode for electric discharge machiningInfo
- Publication number
- JPS5894925A JPS5894925A JP18974681A JP18974681A JPS5894925A JP S5894925 A JPS5894925 A JP S5894925A JP 18974681 A JP18974681 A JP 18974681A JP 18974681 A JP18974681 A JP 18974681A JP S5894925 A JPS5894925 A JP S5894925A
- Authority
- JP
- Japan
- Prior art keywords
- discharge machining
- wire
- wire electrode
- electric discharge
- silicon carbide
- 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 abstract 2
- 239000002184 metal Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 7
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 238000009760 electrical discharge machining Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009763 wire-cut EDM Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
- B23H7/08—Wire electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は放電加工中−二断線する惧れが少ない放電加工
用ワイヤ電極Ｃ二関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wire electrode C2 for electrical discharge machining which has less risk of wire breakage during electrical discharge machining.
ワークとワイヤ電極とを相対的（二移動させ、放゛慰に
よりワークを任意の形状に加工するワイヤカット放電加
工装置（＝於いては、ワイヤ電極として、通常直径が［
１０５■〜α３ｍ程度の真鍮線を用いている。ところで
、真鍮線の抗張力は、室温では４０〜１００（−程度あ
るが、約５００℃の高温中では１５（−程度に低下して
しまうものである。従って、従来の真鍮線のワイヤ電極
では、放電加工時（二発生する熱Ｃ二より、その強度が
低下し、断線しやすくなる欠点があった。Wire-cut electrical discharge machining equipment (= in which the workpiece and the wire electrode are moved relative to each other, and the workpiece is machined into any shape by radiation).
Brass wire of about 105cm to α3m is used. By the way, the tensile strength of brass wire is about 40 to 100 (-) at room temperature, but it decreases to about 15 (-) at high temperatures of about 500 degrees Celsius. Therefore, in conventional brass wire wire electrodes, During electrical discharge machining, the heat generated during electrical discharge machining reduces its strength and makes it more likely to break.
本発明は前述の如き欠点を改善したものであり、その目
的は、ワイヤ電極の熱−二よる強度低下を防止すること
（二ある。以下実施例について詳細−二説明する。The present invention has been made to improve the above-mentioned drawbacks, and its purpose is to prevent the strength of the wire electrode from decreasing due to heat. Examples will be described in detail below.
第１図は本発明の実施例の断面図であり、シリコンカー
バイト系のファイバから成る心線１の外周に、黄銅、亜
鉛等の低沸点導伝性金属からなる金属層２を設けた構造
となっているものである。FIG. 1 is a sectional view of an embodiment of the present invention, which has a structure in which a metal layer 2 made of a low boiling point conductive metal such as brass or zinc is provided around the outer periphery of a core wire 1 made of silicon carbide fiber. This is the result.
シリコンカーバイト系のファイバの抗張力は２５０−寓
程度あり、１２００℃〜１５００℃の高温中（１於いて
も、はぼ同程度の抗張力を有するものである。The tensile strength of silicon carbide fiber is about 250°C, and even at high temperatures of 1200°C to 1500°C, it has about the same tensile strength.
従って、同図（二示すように、心線１の外周４二金属層
２を設ける構成とすれば、放電加工時に発生する熱（＝
より、ワイヤ電極の強度が劣化することはなくなる。又
、金属層２を低沸点導伝性金属を用いて構成しているも
のであるから、金属層２の気化（＝よる冷却効果があり
、熱抵抗の増加を防ぐことができる。尚、心線１の直径
がワイヤ電極の直径の５０〜７〇−程度となるよう（ニ
することが望ましい。Therefore, as shown in Figure 2, if the outer circumference 42 of the core wire 1 is provided with a metal layer 2, the heat generated during electrical discharge machining (=
This prevents the strength of the wire electrode from deteriorating. In addition, since the metal layer 2 is made of a low boiling point conductive metal, there is a cooling effect due to vaporization of the metal layer 2, and an increase in thermal resistance can be prevented. It is desirable that the diameter of the wire 1 be approximately 50 to 70 mm larger than the diameter of the wire electrode.
父、第１図Ｃ二示したワイヤ電極の製造方法としては、
心線１に金属コーティングを施した後、該心線（二融解
した金属を被覆する方法、或は、２枚の金属板間（二心
線１を配置し、この後、金属板を圧雪させる等の方法が
考えられる。The method for manufacturing the wire electrode shown in Figure 1C2 is as follows:
After applying a metal coating to the core wire 1, the core wire (a method of coating two molten metals, or a method of placing two core wires 1 between two metal plates, and then compacting the metal plates) Possible methods include:
尚、実施例に於いては、心線１を１本のファイバとした
が、複数本のファイバを撚り合せたもの・を使用しても
良いことは勿論である。In the embodiment, the core wire 1 is a single fiber, but it goes without saying that a plurality of fibers twisted together may also be used.
以上説明したよう（＝、本発明は、シリコンカーバイト
系のファイバより成る心線の外周に導伝性低沸点金属か
ら成る金属層を設けたものであるから、放電加工時に発
生する熱（二より、ワイヤ電極の強度が劣化することは
なく、従って、放電加工時のワイヤ電極の断線を防止で
きる利点がある。As explained above (=, since the present invention provides a metal layer made of a conductive low boiling point metal on the outer periphery of a core wire made of silicon carbide fiber, the heat generated during electrical discharge machining (2) Therefore, the strength of the wire electrode does not deteriorate, and therefore, there is an advantage that breakage of the wire electrode during electrical discharge machining can be prevented.
第１図は本発明の実施例の断面図である。
１はシリコンカーバイト系のファイバから成る心線、２
は金属層である。
特許出願人 富士通ファナック株式会社代理人 弁理
士玉蟲久五部（外３名）
第１図FIG. 1 is a sectional view of an embodiment of the invention. 1 is a core wire made of silicon carbide fiber, 2
is a metal layer. Patent applicant Fujitsu Fanuc Ltd. Agent Patent attorney Gobe Tamamushi (3 others) Figure 1
Claims (1)
二導伝性低沸点金属より成る金属層を設けたことを特徴
とする放電加工用ワイヤ電極。The outer periphery of the core wire made of silicon carbide fiber (
A wire electrode for electrical discharge machining, characterized in that it is provided with a metal layer made of a biconductive low boiling point metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18974681A JPS5894925A (en) | 1981-11-26 | 1981-11-26 | Wire electrode for electric discharge machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18974681A JPS5894925A (en) | 1981-11-26 | 1981-11-26 | Wire electrode for electric discharge machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5894925A true JPS5894925A (en) | 1983-06-06 |
Family
ID=16246480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18974681A Pending JPS5894925A (en) | 1981-11-26 | 1981-11-26 | Wire electrode for electric discharge machining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5894925A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58155127A (en) * | 1982-03-09 | 1983-09-14 | Mitsubishi Electric Corp | Wire electrode for wire-cut discharge machining |
| JPS619220U (en) * | 1984-06-22 | 1986-01-20 | 荏原電線株式会社 | Wire for electrical discharge machine |
| JPS6138825A (en) * | 1984-07-31 | 1986-02-24 | Seibu Denki Kogyo Kk | Wire electrode for electric discharge machining |
| US4717804A (en) * | 1986-07-24 | 1988-01-05 | General Electric Company | EDM wire electrode |
| US4952768A (en) * | 1984-07-24 | 1990-08-28 | Mitsubishi Denki Kabushiki Kaisha | Electric discharge machining electrode |
| WO1996026032A1 (en) * | 1995-02-20 | 1996-08-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Spark-eroding wire electrode for cutting materials |
-
1981
- 1981-11-26 JP JP18974681A patent/JPS5894925A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58155127A (en) * | 1982-03-09 | 1983-09-14 | Mitsubishi Electric Corp | Wire electrode for wire-cut discharge machining |
| JPS619220U (en) * | 1984-06-22 | 1986-01-20 | 荏原電線株式会社 | Wire for electrical discharge machine |
| US4952768A (en) * | 1984-07-24 | 1990-08-28 | Mitsubishi Denki Kabushiki Kaisha | Electric discharge machining electrode |
| JPS6138825A (en) * | 1984-07-31 | 1986-02-24 | Seibu Denki Kogyo Kk | Wire electrode for electric discharge machining |
| US4717804A (en) * | 1986-07-24 | 1988-01-05 | General Electric Company | EDM wire electrode |
| WO1996026032A1 (en) * | 1995-02-20 | 1996-08-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Spark-eroding wire electrode for cutting materials |
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