JPS5924424Y2

JPS5924424Y2 - Electrode for electrical discharge machining

Info

Publication number: JPS5924424Y2
Application number: JP8439879U
Authority: JP
Inventors: 幸雄田中
Original assignee: 三菱重工業株式会社
Priority date: 1979-06-20
Filing date: 1979-06-20
Publication date: 1984-07-19
Also published as: JPS562330U

Description

【考案の詳細な説明】本考案は、被加工物を大気中で放電加工により切断する
場合に好適な放電加工用電極に係る。[Detailed Description of the Invention] The present invention relates to an electrode for electrical discharge machining that is suitable for cutting a workpiece by electrical discharge machining in the atmosphere.

従来放電加工により被加工物を大気中で切断する場合、
電極形状としては、第１図に示すように、電極１に穴４
をあけここから加工水を流し、放電状態を安定させると
ともに加工屑を除去し、加工速度を早めていた。When cutting a workpiece in the atmosphere using conventional electrical discharge machining,
As for the shape of the electrode, as shown in Fig. 1, the electrode 1 has a hole 4.
Machining water was flowed through the hole to stabilize the electrical discharge condition and remove machining debris, increasing machining speed.

しかし電極に穴をあけるには、以下の欠点があった。However, drilling holes in the electrodes had the following drawbacks.

■ 穴をあける分だけ電極が厚くなり、除去量か多くな
るので、加工速度が遅くなる。■ The electrode becomes thicker as the hole is drilled, and the amount removed increases, which slows down the machining speed.

■ 穴の分だけ被加工物が残り、サーボ送りに障害をお
こしたり、穴がつまるという弊害が生じる。■ The workpiece remains for the size of the hole, causing trouble in servo feed and clogging of the hole.

■ 穴が長くなったり細くなると、穴加工か゛困難とな
り、電極製作が難しい。■ If the hole becomes long or thin, it becomes difficult to process the hole, making it difficult to manufacture the electrode.

本考案は、従来電極の上記欠点を排除するべく、穴をあ
けずに電極先端まで円滑に加工水を送る電極を提案する
ものであり、電極表面両側縁沿いに突起を設けて加工水
流路面を形成するとともに同面上に側縁に対し斜めの溝
を穿設してなることを特徴とする放電加工用電極を提供
する。In order to eliminate the above-mentioned drawbacks of conventional electrodes, the present invention proposes an electrode that smoothly sends machining water to the tip of the electrode without making holes.Protrusions are provided along both sides of the electrode surface to improve the machining water flow path. Provided is an electrode for electric discharge machining, which is characterized in that a groove is formed on the same surface and is diagonal to the side edge.

本考案の一実施例を第２図について説明する。An embodiment of the present invention will be described with reference to FIG.

図において、１は放電電極、２は放電電極１の表面１′
の両側縁沿いに設けられた加工水がこぼれ落ちないため
の突起、３は加工水を円滑に流すための溝である。In the figure, 1 is a discharge electrode, and 2 is a surface 1' of the discharge electrode 1.
Protrusions 3 are provided along both side edges to prevent machining water from spilling out, and 3 are grooves to allow machining water to flow smoothly.

このような電極１において、電極表面１′に加工水を流
すと、被加工物の切断に要する横巾まり大きめの位置両
側にある突起２により加工水のこぼれ落ちは防止され、
加工水が放電を行なっている電極先端に向は流れる。In such an electrode 1, when machining water is flowed onto the electrode surface 1', the protrusions 2 on both sides of the larger width required for cutting the workpiece prevent the machining water from spilling out.
Processing water flows toward the tip of the electrode where electrical discharge is occurring.

また電極厚より被加工物の切断巾が大きくなるので、表
面１′上の加工水は流れるが、もし溝３がないと隙間が
わずかのため加工水が電極先端まで流れずに、被加工物
の手前で加工水がこぼれ落ちる恐れがある。Also, since the cutting width of the workpiece is larger than the electrode thickness, the machining water on the surface 1' will flow, but if there were no grooves 3, the machining water would not flow to the tip of the electrode because the gap would be small, and the workpiece would Processing water may spill out in front of the machine.

そこで本考案電極１においては、さらに電極表面１′に
、両側縁突起２に対し斜め状の溝３を設けており、これ
により被加工物と電極との間に溝３のへこみ分だけ隙間
ができるので、電極先端まで加工水が円滑に流れる。Therefore, in the electrode 1 of the present invention, grooves 3 that are diagonal to the protrusions 2 on both sides are further provided on the electrode surface 1', so that a gap equal to the recess of the groove 3 is created between the workpiece and the electrode. This allows processing water to flow smoothly to the tip of the electrode.

またこの溝３は突起２に対し平行に入れると被加工物切
断面に溝形状が残るが、斜め状に入れであるのでそのよ
うな不都合は生じない。Further, if the groove 3 is inserted parallel to the protrusion 2, a groove shape will remain on the cut surface of the workpiece, but since it is inserted diagonally, such inconvenience does not occur.

したがって本考案電極には次の効果がある。Therefore, the electrode of the present invention has the following effects.

■ 穴加工がなくなるので電極が薄くでき、切断巾が薄
くなり、除去量が少なくなって加工速度が早くなる。■ Since hole drilling is no longer required, the electrode can be made thinner, the cutting width becomes thinner, the amount removed is reduced, and the processing speed is increased.

■ 穴の部分だけ加工残しが生じたり、穴がつまるとい
う不都合がない。■ There is no inconvenience such as leaving unfinished parts in the holes or clogging the holes.

■ 加工水が多量に送れるので、放電現象が円滑になる
。■ A large amount of machining water can be sent, making the discharge phenomenon smoother.

■ 電極製作上、穴加工に較べ加工が容易である。■ In terms of electrode manufacturing, machining is easier compared to hole machining.

[Brief explanation of the drawing]

第１図は従来の電極の要領図、第２図は本考案電極の一
実施例の要領図である。１・・・・・・電極、１′・・・・・・電極表面、２・・・・・・突起、・・・・・・溝。FIG. 1 is a schematic diagram of a conventional electrode, and FIG. 2 is a schematic diagram of an embodiment of the electrode of the present invention. 1... Electrode, 1'... Electrode surface, 2... Protrusion, ... Groove.

Claims

[Scope of utility model registration request]

An electrode for electric discharge machining, characterized in that projections are provided along both side edges of the electrode surface to form a machining water flow path surface, and grooves diagonal to the side edges are bored on the same surface.