JPH0482622A - Electric discharge machining device - Google Patents

Electric discharge machining device

Info

Publication number
JPH0482622A
JPH0482622A JP19475890A JP19475890A JPH0482622A JP H0482622 A JPH0482622 A JP H0482622A JP 19475890 A JP19475890 A JP 19475890A JP 19475890 A JP19475890 A JP 19475890A JP H0482622 A JPH0482622 A JP H0482622A
Authority
JP
Japan
Prior art keywords
electrode
discharge machining
marking
main shaft
positioning
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
JP19475890A
Other languages
Japanese (ja)
Inventor
Nobuaki Oba
大場 信昭
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP19475890A priority Critical patent/JPH0482622A/en
Publication of JPH0482622A publication Critical patent/JPH0482622A/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
    • B23H2500/00Holding and positioning of tool electrodes
    • B23H2500/20Methods or devices for detecting wire or workpiece position

Landscapes

  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PURPOSE:To carry out machining after measuring and determining the position of an electrode automatically, by marking to the standard surface of electrodes beforehand, and providing an electrode mark detecting means to detect the marking position, to a processing tub. CONSTITUTION:A making 111 is placed at the position to be the standard surface of an electrode 1 beforehand, and when the electrode 1 is moved to a main shaft 15 by an arm 17, the main shaft 15 is approached to the place of an electrode mark detecting device 110 provided to a machining tub 3, so as to confirm the position of the mark of each standard surface, and the position of each electrode surface is detected while rotating the main shaft 15, and stored in a numerical control device 10. A reference element 91 is brought into contact with the marking position depending on these position to measure the accurate coordinates to position, and the main shaft is indexed. By making the simple marking 111 on the standard surface of each electrode, and programming a measuring procedure for the numerical control device 10, the measuring position is decided and the measuring is carried out automatically. Consequently, mistakes in positioning and time for arranging can be reduced.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、電極の基準面に予めマーキングされた位置
を検出し、このマーキングから電極の位置を自動的に測
定し位置決めした後加工する放電加工装置に関するもの
である。
[Detailed Description of the Invention] [Industrial Application Field] This invention detects a pre-marked position on the reference surface of an electrode, automatically measures the position of the electrode from this marking, and then performs electrical discharge machining after positioning. This relates to processing equipment.

[従来の技術] 第4図は従来の放電加工装置を示す全体構成図である。[Conventional technology] FIG. 4 is an overall configuration diagram showing a conventional electric discharge machining apparatus.

図において、(1)は放電加工用の電極、(2)は加工
対象物である被加工物、(3)は加工槽、(4)は加工
槽(3)内に貯溜されている絶縁油等の加工液である。
In the figure, (1) is the electrode for electric discharge machining, (2) is the workpiece to be machined, (3) is the machining tank, and (4) is the insulating oil stored in the machining tank (3). It is a processing fluid such as.

通常、この放電加工装置による各加工は、この加工槽(
3)内の加工液(4)中で行なわれる。(5)は電極(
1)と被加工物(2)とに放電用のパルス電流を供給す
るパルろ電流発生装置、(8a)はこの放電加工装置の
主軸を上下方向(Z軸方向)に移動させるボールネジ、
(8c)は被加工物(2)の左右方向(X軸方向)に移
動させるボールネジ、(9a)はZ軸方向のボールネジ
(8a)を回転駆動するサーボモータ、(9b)は被加
工物(2)を前後方向(Y軸方向)に移動させるボール
ネジ(図示せず)を回転駆動するサーボモータ、(9c
)はX軸方向のボールネジ(8c)を回転駆動するサー
ボモータ、(10)は各サーボモータ(9a) 、 (
9b) 、 (9c)の駆動を加ニブログラムに応じて
適宜制御する数値制御装置である。(11)はこの放電
加工装置の上部に位置するヘッド、(12)はヘッド(
11)を固定し支持している枠材であるコラム、(13
)はこの放電加工装置の基台であるベツド、(14b)
は被加工物(2)を加工槽(3)とともに前後方向(Y
軸方向)に移動させる移動テーブル、(14c)は被加
工物(2)を加工槽り3)とともに左右方向(X軸方向
)に移動させる移動テーブル、(15)はこの放電加工
装置の主軸であるヘッド、(1B)は主軸に装着されて
いる電極(1)を交換するための電極交換装置、(17
)は電極交換動作時等に電極(1)等を掴むアーム、(
18)は電極(1)等の各種工具が収納可能なマガジン
ラ・ツクである。
Normally, each machining process using this electrical discharge machining device is performed in this machining tank (
3) is carried out in the processing fluid (4). (5) is the electrode (
(8a) is a ball screw that moves the main shaft of this electrical discharge machining device in the vertical direction (Z-axis direction);
(8c) is a ball screw that moves the workpiece (2) in the left-right direction (X-axis direction), (9a) is a servo motor that rotationally drives the ball screw (8a) in the Z-axis direction, and (9b) is a ball screw that moves the workpiece (2) in the left-right direction (X-axis direction). 2) a servo motor (9c) that rotationally drives a ball screw (not shown) that moves the
) is a servo motor that rotationally drives the ball screw (8c) in the X-axis direction, (10) is each servo motor (9a), (
This is a numerical control device that appropriately controls the driving of 9b) and (9c) according to the addition program. (11) is the head located at the top of this electrical discharge machining device, and (12) is the head (
Column, which is a frame material that fixes and supports (11), (13)
) is the bed which is the base of this electrical discharge machining device, (14b)
The workpiece (2) is moved along with the processing tank (3) in the front-rear direction (Y
(14c) is a moving table that moves the workpiece (2) in the left-right direction (X-axis direction) together with the machining tank (3); (15) is the main axis of this electrical discharge machining device; A certain head (1B) is an electrode exchange device (17) for exchanging the electrode (1) attached to the main shaft.
) is an arm that grips electrode (1) etc. during electrode exchange operations, etc.; (
18) is a magazine rack in which various tools such as the electrode (1) can be stored.

従来の放電加工装置は上記のように構成されておりこの
電極(1)を用いて被加工物(2)に放電加工を施して
いる。次に、この放電加工動作について説明する。
A conventional electrical discharge machining apparatus is configured as described above, and uses this electrode (1) to perform electrical discharge machining on a workpiece (2). Next, this electric discharge machining operation will be explained.

電極(1)と被加工物(2)とを共に加工槽(3)内の
加工液(4)中に浸漬した状態で対向させ、この電極(
1)と被加工物(2)とにパルス電流発生装置(5)か
らパルス電流を通電する。この通電により、上記電極(
1)と被加工物(2)との加工隙間には断続的な放電か
起こり、被加工物(2)には放電による加工か施される
。この際、電極(1)はボールネジ(8a)でZ軸周の
サーボモータ(9a)と連結されているので、数値制御
装置(10)からの指令に応じて上下方向に可動する。
The electrode (1) and the workpiece (2) are both immersed in the machining liquid (4) in the machining tank (3) and facing each other.
1) and the workpiece (2) from a pulse current generator (5). This energization causes the above electrode (
Intermittent electric discharge occurs in the machining gap between 1) and the workpiece (2), and the workpiece (2) is machined by electric discharge. At this time, since the electrode (1) is connected to a servo motor (9a) around the Z-axis by a ball screw (8a), it is movable in the vertical direction according to commands from the numerical control device (10).

また、Y軸方向の移動テーブル(L4b)にはボールネ
ジ(図示せず)を介してY軸用のサーボモータ(9b)
か接続されており、X軸方向の移動テーブル(14c)
にはボールネジ(8C)を介してY軸用のサーボモータ
(9C)が接続されている。これらの各移動テーブル(
14b) 、 (14c)は数値制御装置(10)から
の指令に応じて前後、左右に適宜移動することができる
。これにより、水平方向の位置決め、或いは横方向の加
工等、電極(1〉と被加工物(2)に水平方向の相対位
置変位を任意に変化できる。したがって、各サーボモー
タ(9a)、(9b) 、(9c)の駆動を適宜制御す
ることにより、被加工物(2)の位置に任意形状の放電
加工を施すことかできる。
In addition, a Y-axis servo motor (9b) is connected to the Y-axis moving table (L4b) via a ball screw (not shown).
is connected to the X-axis moving table (14c).
A Y-axis servo motor (9C) is connected to the Y-axis servo motor (9C) via a ball screw (8C). Each of these moving tables (
14b) and (14c) can be moved back and forth and left and right as appropriate in response to commands from the numerical control device (10). As a result, the relative positional displacement in the horizontal direction between the electrode (1) and the workpiece (2) can be changed arbitrarily for horizontal positioning or lateral processing. Therefore, each servo motor (9a), (9b ) and (9c), electrical discharge machining of an arbitrary shape can be performed on the position of the workpiece (2).

この場合、自動的に複数の電極を交換しながら連続的に
加工するためには、予め各電極の位置を測定しておく必
要がある。第5図(a)に電極位置を測定するための測
定子(90)と基準子(91)及び被加工物(2)を示
す。測定子(90)は、被加工物(2)と基準子(91
)との相対位置の測定と、複数の電極の位置を測定する
ための基準となる役割を果す。
In this case, in order to perform continuous processing while automatically exchanging a plurality of electrodes, it is necessary to measure the position of each electrode in advance. FIG. 5(a) shows a measuring element (90), a reference element (91), and a workpiece (2) for measuring the electrode position. The measuring element (90) is connected to the workpiece (2) and the reference element (91).
) and serves as a reference for measuring the positions of multiple electrodes.

次に、各電極の位置を測定する順序について説明する。Next, the order in which the positions of each electrode are measured will be explained.

まず、最初に測定子(90)と基準子(91)との間で
位置決め(以下、芯ズレ補正と言う)を行い、さらに基
準子(91)を使って第5図(b)に示すように、1本
目の電極(1)の芯ズレ補正を行い、次いで第5図(C
)に示すように、2本目の電極(1)の芯ズレ補正を行
う。これらの動作は予め作業者により数値制御装置(1
0)にプログラミングされ、芯ズレ補正を取りたい電極
位置(X、Y、Z座標)が指定され、また、各電極の測
定結果は、各電極番号毎に数値制御装置(10)に記憶
される。
First, positioning (hereinafter referred to as misalignment correction) is performed between the measuring element (90) and the reference element (91), and then using the reference element (91) as shown in Fig. 5(b). Then, the misalignment of the first electrode (1) was corrected, and then Fig. 5 (C
), the misalignment of the second electrode (1) is corrected. These operations are controlled by the numerical control device (1) by the operator in advance.
0), the electrode position (X, Y, Z coordinates) for which center deviation correction is desired is specified, and the measurement results of each electrode are stored in the numerical control device (10) for each electrode number. .

m6図は、測定子(90)と基準子(91)との間で芯
ズレ補正する際の動きを示した図で、直線部分は早送り
の軌跡を示し、波線部分は、電気的接触位置決めの軌跡
を示す。この動作により、x、y、z方向の位置決めか
できる。
Diagram m6 is a diagram showing the movement when correcting misalignment between the measuring element (90) and the reference element (91). The straight line part shows the trajectory of rapid traverse, and the broken line part shows the trajectory of electrical contact positioning. Show the trajectory. This operation allows positioning in the x, y, and z directions.

以上のように、複数の電極を使用して連続的に加工する
ためには、加工する前の段取として各電極の芯ズレ補正
を実施する必要がある。
As described above, in order to perform continuous processing using a plurality of electrodes, it is necessary to correct the misalignment of each electrode as a preparatory step before processing.

また、各電極を位置決めする際、数値制御装置(10)
に入力する数値としては、電極の概略の大きさや、どこ
で基準をとるか等を考えて計算してから行っている。例
えば第7図に示すように、このような電極の場合は比較
的簡単な形状であるが、これでもX軸方向ではXa面と
xb面、Y軸方向ではYa面とyb面、X軸方向ではx
b面といった具合に手順としては、(1)から(5)の
順で位置を測定し位置決めを行っている。
In addition, when positioning each electrode, a numerical control device (10)
The numerical values to be entered are calculated after considering the approximate size of the electrode and where to take the reference point. For example, as shown in Fig. 7, such an electrode has a relatively simple shape, but it still has an Xa plane and an xb plane in the X-axis direction, a Ya plane and a yb plane in the Y-axis direction, and So x
As for the b-plane, the position is measured and positioned in the order of (1) to (5).

[発明か解決しようとする課題] しかしながら、従来の放電加工装置では作業者が電極の
測定位置や寸法を入力するので、間違って入力すると位
置決めの自動運転中にストップするといった課題があっ
た。
[Problem to be Solved by the Invention] However, in the conventional electric discharge machining apparatus, the operator inputs the measurement position and dimensions of the electrode, so if the input is incorrect, there is a problem that the automatic positioning operation stops.

この発明は、上記のような課題を解決するためになされ
たもので、複数の電極を使用して連続加工をする場合、
自動的に電極の位置を測定し位置決めした後、加工を行
う放電加工装置を得ることを目的とする。
This invention was made to solve the above problems, and when performing continuous processing using multiple electrodes,
The object of the present invention is to obtain an electric discharge machining device that automatically measures and positions the electrode and then performs machining.

[課題を解決するための手段] この発明は、自動的に複数の電極を切換えることができ
、加工テーブル上に電極位置決め用の基準子を備えた放
電加工装置において、各電極の基準面に予めマーキング
しておき、加工槽にこのマーキング位置を検出する電極
マーク検出手段を設け、電極マーキング検出手段により
検出したマーキング位置に基準子を接触させ自動的に位
置決めを施した後、放電加工を実施するように構成した
ものである。
[Means for Solving the Problems] The present invention provides an electric discharge machining apparatus that can automatically switch between a plurality of electrodes and is equipped with a reference element for electrode positioning on a processing table. Marking is done in advance, an electrode mark detection means for detecting the marking position is provided in the machining tank, and a reference element is brought into contact with the marking position detected by the electrode marking detection means to automatically perform positioning, and then electrical discharge machining is performed. It is configured as follows.

[作用コ この発明においては、使用しようとする各電極の基準面
に予めマーキングしておけば、電極マク検出手段が主軸
に取り付けられた電極の各基準面のマーキング位置を検
出し、さらに、このマーキング位置に基準子を接触させ
て、このマーキング位置を測定し自動的に位置決めを行
った後、放電加工か実施される。
[Function] In this invention, if the reference surface of each electrode to be used is marked in advance, the electrode mark detection means will detect the marking position of each reference surface of the electrode attached to the main shaft, and After the marking position is measured by bringing a reference element into contact with the marking position and automatically positioning is performed, electrical discharge machining is performed.

[実施例コ 第1図はこの説明の一実施例である放電加工装置を示す
全体構成図、第2図、第3図は電極の位置決めを示す工
程図である。なお、図中、第4図と同一符号は同−又は
相当する部分であるのでここでは説明を省略する。(1
10)は加工槽(3)に設けられた電極マーク検出装置
、(111)は電極の基準面に付されたマーキング、(
14)は加工テーブルである。
[Embodiment] Fig. 1 is an overall configuration diagram showing an electrical discharge machining apparatus which is an embodiment of this explanation, and Figs. 2 and 3 are process diagrams showing the positioning of the electrode. Note that in the figure, the same reference numerals as those in FIG. 4 indicate the same or corresponding parts, so a description thereof will be omitted here. (1
10) is the electrode mark detection device installed in the processing tank (3), (111) is the marking attached to the reference surface of the electrode, (
14) is a processing table.

次に動作について説明する。なお、放電加工自体は従来
例と同様なので、電極の位置決めについてのみ述べる。
Next, the operation will be explained. Note that since the electrical discharge machining itself is the same as in the conventional example, only the positioning of the electrode will be described.

第1図において、予め電極(1)の基準面となる位置に
油性のマジック等でマーキング(111) しておき、
電極(1)を主軸(15)にアーム(17〉で持ってき
たら、加工槽(3)に設けた電極マーク検出装置(11
0)の場所に主軸(15)を近すけていき、各基準面の
マーキング(111)の位置を確認する。
In Fig. 1, a mark (111) is made in advance with an oil marker at the position that will become the reference surface of the electrode (1).
After bringing the electrode (1) to the main shaft (15) with the arm (17), the electrode mark detection device (11) installed in the processing tank (3)
0), and check the position of the marking (111) on each reference surface.

この場合、第3図に示すように主軸(15)を回転させ
ながら、各電極面毎の位置を検出し数値制御装置(10
)へ記憶する。これらの位置を基に、基準子(91)を
マーキング位置に接触させて正確な座標を測定し位置決
めしている。第3図の工程は、検出(a)−位置決め(
b)−検出(C)の順で行っており、そのたびに主軸を
割り出していく。
In this case, the position of each electrode surface is detected while rotating the main shaft (15) as shown in FIG.
). Based on these positions, the reference element (91) is brought into contact with the marking position to measure accurate coordinates and determine the position. The steps in Figure 3 are detection (a) - positioning (
The detection is performed in the order of b)-detection (C), and the main axis is determined each time.

第2図に、マーキング(Ill)された電極面に位置決
めしていく手順の一例を示した。この例ではzb面から
始めてYa面を最後に位置決めしている。
FIG. 2 shows an example of the procedure for positioning on the marked (Ill) electrode surface. In this example, positioning starts from the Zb plane and ends with the Ya plane.

本実施例によれば、各電極の基準面に簡単なマーキング
をし、あとは数値制御装置(10)に測定手順をプログ
ラムしておけば測定位置を判断し測定を自動的に行う。
According to this embodiment, a simple marking is made on the reference surface of each electrode, and the measurement procedure is programmed into the numerical control device (10) to determine the measurement position and automatically perform the measurement.

従って電極の大きさと測定する位置はほとんど機械まか
せとなり、作業者が指定するのは、その基準を測定した
点からどう処理するか、例えばセンター振り分けなのか
、片側からの基準なのかを教えるだけとなるため、位置
決めミスや段取時間を減少させることができる。
Therefore, the size of the electrode and the position to be measured are mostly left to the machine, and the only thing the operator has to specify is how to process the reference from the measured point, for example, whether to distribute it to the center or to use it as a reference from one side. Therefore, positioning errors and setup time can be reduced.

なお、上記実施例では電極マーク検出装置を一ケ所のみ
で行っているか、左右とか上下とかの二ケ所以上で行っ
てもよい。
In the above embodiments, the electrode mark detection device may be used at only one location, or may be located at two or more locations, such as on the left and right, or on the top and bottom.

[発明の効果〕 この発明に係る放電加工装置によれば、自動的に複数の
電極を交換しながら加工する場合でも、各電極の基準面
に予めマーキングして、このマーキング位置を電極マー
ク検出手段で検出し、さらにこのマーキング位置に自動
的に位置決めを施した後、放電加工を行うようにしたの
で、位置決めミスを大幅に減少させることができる。ま
た、作業者の負担や段取り時間も大幅に軽減するので、
放電加工の自動化の推進にも寄与できる。
[Effects of the Invention] According to the electric discharge machining apparatus according to the present invention, even when machining is performed while automatically exchanging a plurality of electrodes, the reference surface of each electrode is marked in advance, and this marking position is detected by the electrode mark detection means. Since the marking position is detected and the marking position is automatically positioned before electrical discharge machining is performed, positioning errors can be significantly reduced. It also greatly reduces the burden on workers and setup time.
It can also contribute to promoting automation of electrical discharge machining.

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

第1図は、この発明の一実施例を示す放電加工装置の全
体構成図、第2図及び第3図はこの発明に係る電極の位
置決めの工程図、第4図は従来の放電加工装置の全体構
成図、第5図及び第6図は従来の放電加工装置における
芯ずれ補正の説明図、第7図は従来の放電加工装置にお
ける電極の位置決めの工程図である。 図において、(1)は電極、(2)は被加工物、(3)
は加工槽、(10)は数値制御装置、(15)は主軸、
(16)は電極交換装置、(90)は測定子、(91)
は基準子、(110)は電極マーク検出装置、(111
)は電極のマーキングである。 なお、各図中、同一符号は同−又は相当部分を示す。
FIG. 1 is an overall configuration diagram of an electric discharge machining apparatus showing an embodiment of the present invention, FIGS. 2 and 3 are process diagrams for positioning an electrode according to the present invention, and FIG. 4 is a diagram of a conventional electric discharge machining apparatus. The overall configuration diagram, FIGS. 5 and 6 are explanatory diagrams of misalignment correction in a conventional electric discharge machining apparatus, and FIG. 7 is a process diagram of electrode positioning in a conventional electric discharge machining apparatus. In the figure, (1) is the electrode, (2) is the workpiece, and (3)
is the processing tank, (10) is the numerical control device, (15) is the main shaft,
(16) is the electrode exchange device, (90) is the measuring head, (91)
is a reference element, (110) is an electrode mark detection device, (111
) are electrode markings. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】 自動的に複数の電極を切換えることができ、加工テーブ
ル上に電極位置決め用の基準子を備えた放電加工装置に
おいて、 各電極の基準面に予めマーキングしておき、加工槽に該
マーキング位置を検出する電極マーク検出手段を設け、
該電極マーク検出手段により検出したマーキング位置に
上記基準子を接触させマーキング位置に自動的に位置決
めを施した後、放電加工を実施するように構成したこと
を特徴とする放電加工装置。
[Claims] In an electric discharge machining device that can automatically switch between a plurality of electrodes and is equipped with a reference element for electrode positioning on a processing table, the reference surface of each electrode is marked in advance, and the reference surface of each electrode is marked in advance. is provided with electrode mark detection means for detecting the marking position,
An electric discharge machining apparatus characterized in that the reference element is brought into contact with a marking position detected by the electrode mark detection means, and after automatically positioning the marking position, electrical discharge machining is carried out.
JP19475890A 1990-07-25 1990-07-25 Electric discharge machining device Pending JPH0482622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19475890A JPH0482622A (en) 1990-07-25 1990-07-25 Electric discharge machining device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19475890A JPH0482622A (en) 1990-07-25 1990-07-25 Electric discharge machining device

Publications (1)

Publication Number Publication Date
JPH0482622A true JPH0482622A (en) 1992-03-16

Family

ID=16329752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19475890A Pending JPH0482622A (en) 1990-07-25 1990-07-25 Electric discharge machining device

Country Status (1)

Country Link
JP (1) JPH0482622A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11135667B2 (en) * 2018-03-09 2021-10-05 Mitsubishi Heavy Industries, Ltd. Machining position correcting device and electrochemical machining device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11135667B2 (en) * 2018-03-09 2021-10-05 Mitsubishi Heavy Industries, Ltd. Machining position correcting device and electrochemical machining device

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