JPS60232825A - Wire cut machining - Google Patents

Wire cut machining

Info

Publication number
JPS60232825A
JPS60232825A JP8949284A JP8949284A JPS60232825A JP S60232825 A JPS60232825 A JP S60232825A JP 8949284 A JP8949284 A JP 8949284A JP 8949284 A JP8949284 A JP 8949284A JP S60232825 A JPS60232825 A JP S60232825A
Authority
JP
Japan
Prior art keywords
workpieces
machining
wire
wire cut
electrode
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
Application number
JP8949284A
Other languages
Japanese (ja)
Inventor
Harumi Watanabe
晴美 渡辺
Seiichi Komai
駒井 征一
Tatsuya Adachi
達也 足立
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP8949284A priority Critical patent/JPS60232825A/en
Publication of JPS60232825A publication Critical patent/JPS60232825A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H7/00Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/02Wire-cutting

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

PURPOSE:To obtain positive machining with high precision in wire cut discharging machining or wire cut electrolytic machining by placing a plurality of workpieces in close contact through conductive thin films. CONSTITUTION:Conductive paste 6 is applied in a thin film to overlapping surfaces of a plurality of workpieces 5... of metal flat plates, and then the workpieces 5... are laid one above another. The workpieces 5... placed in layers are pressedly held by, for example, a clamping jig so as to be fixed as a unit. Then, the workpieces 5... are fixedlyh mounted to a predetermined location of a workpiece feeder in a wire cut discharging machine. And, a wire electrode 7 is inserted through a hole H preliminarily formed. With working fluid supplied from a working fluid circulating device along the electrode 7 moving in the direction of arrow A, the workpieces 5... are sent in the direction of arrow B for wire cut discharging machining. This method permits positive machining with high precision.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、被加工物を重ねて加工するときのワイヤカッ
ト加工方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a wire cutting method for processing workpieces in a stacked manner.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

近時、ワイヤ放電加工が1例えば金型の製作。 Recently, wire electrical discharge machining is used for example in the production of molds.

部品加工などをはじめとして広範囲にわたって利用され
ている。このワイヤ放電加工は、銅、タングステン、モ
リブデン等の細いワイヤを巻き取シなから、これを電極
として2次元輪郭形状を数値制御により送りをかけ、兵
のとぐ一蛤猟冬カ17子るものであって、どのような複
雑な輪郭形状であっても高精度かつ高能率で加工で・き
るため、製品納期の短縮及び低価格化を容易に実現でき
る。
It is used in a wide range of applications, including parts processing. This wire electrical discharge machining involves winding up a thin wire made of copper, tungsten, molybdenum, etc., and using this as an electrode, a two-dimensional contour shape is fed through numerical control to create a 17-year experience for soldiers. Because it can process any complex contour shape with high precision and efficiency, it is easy to shorten product delivery times and lower prices.

ところで、この放電加工においては、主としてコストダ
ウンを目的として、被加工物を重ね合わせて同時加工す
ることが行われている。たとえば。
By the way, in this electrical discharge machining, workpieces are overlapped and simultaneously machined mainly for the purpose of cost reduction. for example.

金型素材を2枚重ね、ワイヤ放電加工によりポンチとダ
イとを同時に取シ出すようなことが行われている。しか
るに、このような重ね合せ加工による場合、各素材間の
重ね合せ部間にはノ、微視的に絶縁層である空隙が生じ
る。それゆえ、第1図に示すように、各素材(1)、 
(2)間で電位差が生じ、各素材(1)、(2)間とワ
イヤ電極(3)との放電特性が異なるものとなる。した
がって、電位差が生じている各素材(1)、(2)で加
工量が異な°シ1両者間で寸法差が生じて、例えば透孔
(3)、(4)の内径を均一に加工することができない
問題を生じている。しかも。
Two pieces of mold material are stacked one on top of the other, and the punch and die are simultaneously ejected by wire electrical discharge machining. However, in the case of such overlapping processing, microscopic gaps, which are insulating layers, are created between the overlapping parts of the respective materials. Therefore, as shown in Figure 1, each material (1),
A potential difference occurs between the materials (1) and (2), and the discharge characteristics between the materials (1) and (2) and the wire electrode (3) differ. Therefore, the amount of machining is different for each material (1) and (2) where a potential difference occurs.Differences in dimension occur between the two materials, for example, the inner diameter of through holes (3) and (4) cannot be uniformly machined. This is causing a problem that cannot be done. Moreover.

前記空隙に滞留している空気又は切屑に基因して発生し
た異常放電によシワイヤ電極の断線事故を1−げ1−f
f若た紀と十木旦を未ルドーイ1八奇−〔発明の目的〕 本発明は、上記事情に着目してなされたもので。
1-f to prevent disconnection of the shear wire electrode due to abnormal discharge caused by air or chips remaining in the gap.
f Wakataki and Toki Dan are not included in Rudoi 1 Hakki - [Object of the Invention] The present invention has been made by paying attention to the above-mentioned circumstances.

被加工物を重ね合わせて放電加工しても、高精度かつ確
実に加工することのできるワイヤカット加工方法を提供
することを目的とする。
It is an object of the present invention to provide a wire cut machining method that can perform electric discharge machining with high precision even when workpieces are overlapped and subjected to electrical discharge machining.

〔発明の概要〕[Summary of the invention]

複数の被加工物を導電性薄膜を介して密接させ。 Multiple workpieces are brought into close contact via a conductive thin film.

ワイヤ電極によりワイヤカット放電加工又はワイヤカッ
ト電解加工を行わAるようにしたものである。
Wire cut electrical discharge machining or wire cut electrolytic machining is performed using a wire electrode.

〔発明の実施例〕[Embodiments of the invention]

以下1本発明の一実施例を図面を参照して詳述する。 An embodiment of the present invention will be described below in detail with reference to the drawings.

第2図に示すように、金属製の平板からなる複数の被加
工物(5)・・・を重畳する。このとき、各波力ロ工物
(5)・・・間には、厚さ数μm以下の導電性ペースト
(6)・・・を介在させる。すなわち、被加工物(5)
・・・の重ね合せ面に導電性ペースト(6)を薄膜状に
塗布しておき、ついで被加工物(5)・・・を重畳する
。この導電ペースト(6)・・・とじては1例えば、鉄
粉を混合して導電性を付与したペーストなどが好適であ
る。しかして1重ね合わされている被加工物(5)・・
・を例えばクランプ治具(図示せず)によシ挾圧し、一
体的に固定する。ついで、被加工物(5)・・・をワイ
ヤカット放電加工機の工作物送9装置(図示せず)の所
定位置に固設する。つぎに、あらかじめ穿設されている
孔(H)にワイヤ電極(力を挿通させる。しかして、加
工液循環装置によシ、加工液を矢印四方向に移動するワ
イヤ電極(7)に沿って供給しながら、工作物送り装置
によシ重ね合わされた被加工物(5)・・・を矢印(B
)方向に送って、同時にワイヤカット放電加工し、所望
の貫通孔を形成する。
As shown in FIG. 2, a plurality of workpieces (5) made of flat metal plates are overlapped. At this time, a conductive paste (6) having a thickness of several μm or less is interposed between each of the wave force blowing works (5). That is, the workpiece (5)
A thin film of conductive paste (6) is applied to the overlapping surfaces of the workpieces (5), and then the workpieces (5) are superimposed on each other. As for this conductive paste (6), for example, a paste mixed with iron powder to impart conductivity is suitable. However, one workpiece (5) is overlapped...
・For example, use a clamp jig (not shown) to clamp and secure the parts together. Next, the workpieces (5) are fixed at a predetermined position of a workpiece feeder 9 (not shown) of a wire-cut electrical discharge machine. Next, the wire electrode (force) is inserted into the hole (H) that has been drilled in advance.The machining fluid circulation device then moves the machining fluid in the four directions of the arrows along the wire electrode (7). While feeding, the workpieces (5) overlapped by the workpiece feeding device are moved by the arrow (B).
) direction and wire-cut electrical discharge machining is performed at the same time to form the desired through hole.

この場合、被加工物(5)・・・は、導電性ペースト(
6)・・・を介して、電位的に完全に一体化しているの
で。
In this case, the workpiece (5)... is a conductive paste (
6) Because they are completely integrated in terms of potential via...

各被加工物(5)・・・の接触面における電位差は全く
ない。したがって、ワイヤ電極(7)と被加工物(5)
・・・との間の放電に基因して被加工物(5)・・・の
内壁面に形成される放電痕の度合は、各被加工物(5)
・・・ですぺで等しくなる。つまり、各被加工物(5)
・・・間で放電加工量に差がなく、均一な加工を行うこ
とができる結果、一様な面あらさの加工面を得ることが
できる。しかも、ワイヤ電極(7)の電極消耗比も加工
中一定となシ、かつ空隙が充填されているので空気や切
屑が滞留することがなく異常な放電現象が皆無となるの
で、ワイヤ電極の断線事故を防止できる。
There is no potential difference at all on the contact surfaces of each workpiece (5). Therefore, the wire electrode (7) and the workpiece (5)
The degree of discharge marks formed on the inner wall surface of the workpiece (5) due to the electric discharge between the workpieces (5) and...
...and it becomes equal. In other words, each workpiece (5)
... There is no difference in the amount of electrical discharge machining between the two, and uniform machining can be performed, resulting in a machined surface with uniform surface roughness. Moreover, the electrode consumption ratio of the wire electrode (7) remains constant during machining, and since the voids are filled, air and chips do not accumulate, and there is no abnormal electrical discharge phenomenon. Accidents can be prevented.

なお、上記導電性ペーストの代シに1例えばドータイト
(商品名、藤倉化成株式会社製)などの導電性塗料を使
用してもよい。さらに1本発明は。
In place of the conductive paste, a conductive paint such as Dotite (trade name, manufactured by Fujikura Kasei Co., Ltd.) may be used. One more thing about this invention.

ワイヤカット放電加工のみならず放電を伴わないワイヤ
カット電解加工にも適用することができる。
It can be applied not only to wire-cut electrical discharge machining but also to wire-cut electrolytic machining that does not involve electrical discharge.

さらに、被加工物の重ね合わせは、ワイヤ電極方向でな
くともよい。
Furthermore, the workpieces do not need to be stacked in the direction of the wire electrode.

〔発明の効果〕〔Effect of the invention〕

本発明のワイヤカット加工方法は、被加工物を重ね合わ
せて同時加工する場合においても、均一な加工を行うこ
とができ、かつ一様な面あらさの加工面を得ることがで
きる。まき、ワイヤ電極の電極消耗比が一定とな9.が
つ重ね合わせ面にお1、−1−ア売皓詰;ネ拮シも イ
電へスのず ■摺やd屈充滞留することがなくなシ異常
放電がなくなるので。
The wire cut processing method of the present invention can perform uniform processing even when workpieces are overlapped and processed simultaneously, and a processed surface with uniform surface roughness can be obtained. 9. The electrode consumption ratio of the winding and wire electrodes is constant. 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 5, 1, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 1 , 1 , , , , , , , , , , , , 1, , , , , , , , , , , , , 1 , , , 1, , , , , , , , , and 1, , and 10, respectively, are soldered;

ワイヤ電極の断線事故を防止できる。Wire electrode disconnection accidents can be prevented.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はワイヤカット放電加工により重ね合わされた被
加工物を同時加工したときの寸法誤差の発生を示す断面
図、第2図は本発明の一実施例のワイヤカット加工方法
を説明するだめの図である。 (5):被加工物。 (6):導電性ペースト(導電性薄膜)。 (7):ワイヤ電極。 代理人 弁理士 則 近 憲 佑 (ほか1名)
Fig. 1 is a cross-sectional view showing the occurrence of dimensional errors when overlapping workpieces are simultaneously machined by wire-cut electric discharge machining, and Fig. 2 is a cross-sectional view illustrating the wire-cut machining method according to an embodiment of the present invention. It is a diagram. (5): Workpiece. (6): Conductive paste (conductive thin film). (7): Wire electrode. Agent: Patent attorney Kensuke Chika (and 1 other person)

Claims (1)

【特許請求の範囲】[Claims] 複数の被加工物を導電性薄膜を介して密接させる方法と
、上記密接している複数の被加工物とワイヤ電極との間
に非接触状態で電流を導通させ上記複数の被加工物を同
時に加工する方法とを具備することを特徴とするワイヤ
カット加工方法。
A method in which a plurality of workpieces are brought into close contact with each other via a conductive thin film, and a current is conducted between the plurality of workpieces in close contact with a wire electrode in a non-contact state to simultaneously work on the plurality of workpieces. A wire cut processing method comprising:
JP8949284A 1984-05-07 1984-05-07 Wire cut machining Pending JPS60232825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8949284A JPS60232825A (en) 1984-05-07 1984-05-07 Wire cut machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8949284A JPS60232825A (en) 1984-05-07 1984-05-07 Wire cut machining

Publications (1)

Publication Number Publication Date
JPS60232825A true JPS60232825A (en) 1985-11-19

Family

ID=13972247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8949284A Pending JPS60232825A (en) 1984-05-07 1984-05-07 Wire cut machining

Country Status (1)

Country Link
JP (1) JPS60232825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104816057A (en) * 2015-04-28 2015-08-05 力帆实业(集团)股份有限公司 Batch shape correction processing method for convex teeth of neutral gears at ends of gear shifting wheels of motorcycles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852092A (en) * 1971-11-01 1973-07-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852092A (en) * 1971-11-01 1973-07-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104816057A (en) * 2015-04-28 2015-08-05 力帆实业(集团)股份有限公司 Batch shape correction processing method for convex teeth of neutral gears at ends of gear shifting wheels of motorcycles

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