JPS6250252B2 - - Google Patents
Info
- Publication number
- JPS6250252B2 JPS6250252B2 JP9079682A JP9079682A JPS6250252B2 JP S6250252 B2 JPS6250252 B2 JP S6250252B2 JP 9079682 A JP9079682 A JP 9079682A JP 9079682 A JP9079682 A JP 9079682A JP S6250252 B2 JPS6250252 B2 JP S6250252B2
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- electrode
- machining
- sensing
- electrical discharge
- 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.)
- Expired
Links
- 238000003754 machining Methods 0.000 claims description 29
- 238000009760 electrical discharge machining Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 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
- B23H7/14—Electric circuits specially adapted therefor, e.g. power supply
- B23H7/20—Electric circuits specially adapted therefor, e.g. power supply for programme-control, e.g. adaptive
Description
【発明の詳細な説明】
本発明は放電加工装置、特に被加工物を位置決
めすることなくワークテーブルの任意の位置に自
動的に固定するだけで加工用電極と被加工物の相
対的な位置決めを自動的に行ない得る放電加工装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is an electric discharge machining device, in particular, the relative positioning of a machining electrode and a workpiece by automatically fixing the workpiece at an arbitrary position on a work table without positioning the workpiece. This invention relates to an electrical discharge machining device that can perform automatic electrical discharge machining.
従来、放電加工機には電極を正確に所定量回転
させて位置決めする機能がないため被加工物の基
準面と平行な加工形状を持つ型彫りを行なう場合
には被加工物及び電極の基準面がワークテーブル
の移動方向に対して正確に同一方向に向くように
調節固定し、その後所定寸法だけワークテーブル
を移動させた後放電加工するのが一般的であつ
た。また被加工物の基準面と平行な加工形状を持
たない円筒状のような加工を行なう場合にも被加
工物の基準面からの位置決めを容易に行なうため
に被加工物はワークテーブルの移動方向に対して
同一方向に向くように調節固定される必要があつ
た。しかしながら被加工物及び電極のワークテー
ブル移動方向に対する平行度の調節はその精度が
そのまま加工形状の被加工物の基準面からの寸法
の誤差に影響を及ぼすため正確な測定具を用いて
入念に行なう必要があるため多くの時間と熟練を
必要としていた。またこの位置決め作業の間、放
電加工することができず装置を効率的に使用でき
ない欠点があつた。 Conventionally, electric discharge machines do not have the function of accurately rotating and positioning the electrode by a predetermined amount. Generally, the work table is adjusted and fixed so that it faces exactly in the same direction as the moving direction of the work table, and then the work table is moved by a predetermined distance and then electrical discharge machining is performed. Also, when machining a cylindrical shape that does not have a machining shape parallel to the reference plane of the workpiece, the workpiece should be moved in the direction of movement of the worktable in order to easily position the workpiece from the reference plane. It was necessary to adjust and fix it so that it faced in the same direction. However, the adjustment of the parallelism of the workpiece and electrode with respect to the worktable movement direction must be done carefully using accurate measuring tools because the accuracy directly affects the dimensional error of the workpiece from the reference plane of the machined shape. This required a lot of time and skill. Furthermore, during this positioning work, electrical discharge machining cannot be performed, and the apparatus cannot be used efficiently.
また、電極自動交換装置及び被加工物の自動搬
入自動クランプ装置などを利用した自動化システ
ムにおいては被加工物をワークテーブル上に正確
に一定位置に固定することが難しく、精度の高い
加工を自動的に行なうことはできなかつた。 In addition, in automated systems that use automatic electrode exchange equipment and automatic workpiece loading and automatic clamping equipment, it is difficult to accurately fix the workpiece in a fixed position on the work table, and high-precision machining can be performed automatically. I couldn't do it.
本発明は前述した従来装置の課題に鑑み為され
たものであり、その目的は被加工物を位置決めす
ることなくワークテーブルに固定し、被加工物の
基準面を測定用電極を用いて測定し、被加工物の
ワークテーブルの移動方向に対するズレ及びワー
クテーブル上の位置を検出し、加工の座標系を移
動、回転させると共にそれに合わせて電極を回転
させて加工することにより従来行つていた電極及
び被加工物の平行度調節作業を省くと共に位置決
め精度の悪い被加工物の自動クランプ装置でも精
度の高い加工を可能ならしめ得る放電加工装置を
提供することにある。 The present invention was made in view of the problems of the conventional apparatus described above, and its purpose is to fix the workpiece to a work table without positioning it, and measure the reference surface of the workpiece using a measuring electrode. , by detecting the deviation of the workpiece in the direction of movement of the worktable and the position on the worktable, moving and rotating the machining coordinate system, and rotating the electrode accordingly. Another object of the present invention is to provide an electric discharge machining apparatus that can eliminate the work of adjusting the parallelism of a workpiece and enable highly accurate machining even with an automatic clamping device for a workpiece with poor positioning accuracy.
上記目的を達成するために、本発明は、加工用
電極と被加工物とが対向した加工間隙に放電を発
生させて上記被加工物に所望の形状を加工する放
電加工装置において、上記加工用電極を測定用電
極と交換するための作動装置と、上記被加工物を
搬入且つ自動的にクランプする装置と、上記測定
用電極と被加工物との接触を感知する感知装置
と、該感知装置による接触感知信号の発生した位
置を読み込む記憶装置、該記憶装置の記憶値によ
り被加工物がワークテーブルに載置された状態を
感知し、座標系を移動、回転させると共に加工用
電極の回転方向の位置決めを行なう制御装置とを
具備することを特徴とする。 In order to achieve the above object, the present invention provides an electric discharge machining apparatus for machining a desired shape on the workpiece by generating electric discharge in a machining gap where a machining electrode and a workpiece face each other. an actuating device for replacing the electrode with a measuring electrode; a device for loading and automatically clamping the workpiece; a sensing device for sensing contact between the measuring electrode and the workpiece; and the sensing device. A storage device that reads the position where a contact sensing signal is generated by the storage device, and detects the state in which the workpiece is placed on the worktable based on the stored value of the storage device, moves and rotates the coordinate system, and determines the rotation direction of the processing electrode. The invention is characterized by comprising a control device that performs positioning.
以下、図面について本発明の好適な実施例を説
明する。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
第１図は本発明による放電加工装置の構成図で
あつて、１０は主軸、１２は加工用電極、１４は
自動電極交換装置、１６は測定用電極、１８は被
加工物、２０は被加工物テーブル、２２は主軸回
転装置である。第２図は被加工物１８が被加工物
テーブル２０に載置された状態を示す平面図で被
加工物１８の基準面１８ａ，１８ｂは被加工物テ
ーブル２０の進行方向（図中Ｘ、Ｙ）に対してあ
る傾きをもつている。 FIG. 1 is a configuration diagram of an electric discharge machining apparatus according to the present invention, in which 10 is a main shaft, 12 is a machining electrode, 14 is an automatic electrode exchange device, 16 is a measuring electrode, 18 is a workpiece, and 20 is a workpiece. The object table 22 is a main shaft rotating device. FIG. 2 is a plan view showing a state in which the workpiece 18 is placed on the workpiece table 20. The reference planes 18a and 18b of the workpiece 18 are in the traveling direction of the workpiece table 20 (X, Y in the figure). ) has a certain slope.
次に以上の本発明装置による加工用電極及び被
加工物の相対的な位置決め方法を説明する。ま
ず、自動電極交換装置１４により加工用電極１２
が測定用電極１６に交換される。測定用電極１６
はそれ自体に内蔵された接触感知機能により被加
工物１８の互いに直角を構成する２つの基準面に
ついておのおの２点の位置を測定し、その位置を
読み込み記憶する。今その位置を（X1、Y1）、
（X2、Y2）、（X3、Y3）、（X4、Y4）とすれば、被加
工物１８はテーブル移動方向に対して
θ＝tan-1Ｙ２−Ｙ１／Ｘ２−Ｘ１またはtan-1Ｘ４
−Ｘ３／Ｙ４−Ｙ３
だけ傾いていることになる。また被加工物の座標
原点（X0、Y0）はそれら４つの座標値により互の
座標を通る２つの直線を算出し、それらの交点を
求めることにより容易にできる。また主軸回転装
置２２は回転角度零で加工用電極１２を保持した
時加工用電極１２の基準面は被加工物テーブル２
０の進行方向と同一方向に向くように調節される
と共に加工用電極１２自体も同様に予め加工され
ている。すなわち、任意に固定された被加工物１
８に加工用電極１２を用いて放電加工を行なうに
は、座標原点を（X0、Y0）に移動すると共にθ度
回転させさらに主軸回転装置２２によつて加工用
電極１２をθ度回転させれば加工結果は被加工物
１８及び加工用電極１２の基準面が被加工物テー
ブル２０の進行方向と平行になるように調節して
加工した場合とまつたく同一となる。 Next, a method for relative positioning of a processing electrode and a workpiece using the above-described apparatus of the present invention will be explained. First, the processing electrode 12 is replaced by the automatic electrode exchanger 14.
is replaced with the measurement electrode 16. Measuring electrode 16
uses its own built-in touch sensing function to measure the positions of two points on each of two reference planes of the workpiece 18 that are perpendicular to each other, and reads and stores the positions. Now the position is (X 1 , Y 1 ),
If (X 2 , Y 2 ), (X 3 , Y 3 ), (X 4 , Y 4 ), then the workpiece 18 is θ=tan −1 Y 2 −Y 1 /X in the table movement direction. 2 -X 1 or tan -1 X 4
It is tilted by -X 3 /Y 4 -Y 3 . Further, the coordinate origin (X 0 , Y 0 ) of the workpiece can be easily determined by calculating two straight lines passing through each other's coordinates using these four coordinate values and finding their intersection. Further, when the main shaft rotating device 22 holds the machining electrode 12 at a rotation angle of zero, the reference plane of the machining electrode 12 is the workpiece table 2.
The processing electrode 12 itself is adjusted in such a way that it faces in the same direction as the traveling direction of 0, and the processing electrode 12 itself is also processed in advance. That is, the workpiece 1 fixed arbitrarily
8. To perform electric discharge machining using the machining electrode 12, move the coordinate origin to (X 0 , Y 0 ) and rotate it by θ degrees, and then rotate the machining electrode 12 by θ degrees by the spindle rotation device 22. If this is done, the machining result will be exactly the same as when the workpiece 18 and the reference plane of the machining electrode 12 are adjusted so that they are parallel to the advancing direction of the workpiece table 20.
また加工用電極１２による基準面を持たない円
筒形のような加工を行なう場合で被加工物１８を
任意に固定した場合であつても前記の操作のうち
主軸回転装置の回転が不要なだけで同様に位置決
めを行なうことができる。 Furthermore, even if the workpiece 18 is arbitrarily fixed when machining a cylindrical shape that does not have a reference surface using the machining electrode 12, the rotation of the spindle rotation device among the above operations is not necessary. Positioning can be performed similarly.
上記のすべての動作はすべてNC装置により予
め作成されたプログラムに基づいて自動的に測
定、記憶、演算、指令等を行なうことができ、ま
た、被加工物の自動搬入自動クランプ機構を備え
た金型加工の無人化を達成する上で問題となる被
加工物の固定のバラツキによる加工精度のバラツ
キを最小限にとどめることができる。 All of the above operations can be automatically measured, stored, calculated, commanded, etc. based on programs created in advance by the NC device. It is possible to minimize variations in processing accuracy due to variations in the fixation of workpieces, which is a problem in achieving unmanned mold processing.
以上の説明は型彫り放電加工機の場合について
説明したが、ワイヤカツト放電加工機についても
加工に使われる電極をそのまま測定用電極とすれ
ば同一の効果が得られることはいうまでもない。 The above explanation has been given for a die-sinking electrical discharge machine, but it goes without saying that the same effect can be obtained in a wire-cut electrical discharge machine if the electrode used for machining is directly used as the measuring electrode.
以上のように本発明によれば、被加工物を任意
の位置に固定するだけで、自動的に被加工物と加
工用電極との相対的な位置決めを行なうことがで
き、加工精度を向上させ得ると共に、位置決めに
要する時間を従来装置に比較して格段に短縮する
ことができ放電加工装置の稼動率を向上させ得る
等の優れた効果を有する。 As described above, according to the present invention, by simply fixing the workpiece at an arbitrary position, the relative positioning of the workpiece and the machining electrode can be automatically performed, improving machining accuracy. In addition, it has excellent effects such as being able to significantly shorten the time required for positioning compared to conventional equipment and improving the operating rate of the electrical discharge machining equipment.
第１図は本発明装置の一例を示す概略構成図、
第２図はその動作の説明に供する被加工物を載置
した状態の平面図である。各図中同一部材には同
一符号を付し、１０は主軸、１２は加工用電極、
１４は自動電極交換装置、１６は測定用電極、１
８は被加工物、２０は被加工物テーブルである。
FIG. 1 is a schematic configuration diagram showing an example of the device of the present invention;
FIG. 2 is a plan view of a state in which a workpiece is placed to explain its operation. The same members in each figure are given the same symbols, 10 is the main shaft, 12 is the processing electrode,
14 is an automatic electrode exchange device, 16 is a measurement electrode, 1
8 is a workpiece, and 20 is a workpiece table.
Claims (1)
に放電を発生させて上記被加工物に所望の形状を
加工する放電加工装置において、上記加工用電極
を測定用電極と交換するための作動装置と、上記
被加工物を搬入且つ自動的にクランプする装置
と、上記測定用電極と被加工物との接触を感知す
る感知装置と、該感知装置による接触感知信号の
発生した位置を読み込む記憶装置、該記憶装置の
記憶値により被加工物がワークテーブルに載置さ
れた状態を感知し、座標系を移動、回転させると
共に加工用電極の回転方向の位置決めを行なう制
御装置とを具備することを特徴とする放電加工装
置。1. An operation for exchanging the machining electrode with a measurement electrode in an electrical discharge machining device that machines a desired shape on the workpiece by generating electric discharge in a machining gap where the machining electrode and the workpiece face each other. a device for loading and automatically clamping the workpiece, a sensing device for sensing contact between the measurement electrode and the workpiece, and a memory for reading the position at which a contact sensing signal is generated by the sensing device. and a control device that senses the state in which the workpiece is placed on the work table based on the stored values of the storage device, moves and rotates the coordinate system, and positions the processing electrode in the rotational direction. Electrical discharge machining equipment featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9079682A JPS58206316A (en) | 1982-05-28 | 1982-05-28 | Discharge machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9079682A JPS58206316A (en) | 1982-05-28 | 1982-05-28 | Discharge machining device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58206316A JPS58206316A (en) | 1983-12-01 |
| JPS6250252B2 true JPS6250252B2 (en) | 1987-10-23 |
Family
ID=14008542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9079682A Granted JPS58206316A (en) | 1982-05-28 | 1982-05-28 | Discharge machining device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58206316A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04126947U (en) * | 1991-05-02 | 1992-11-19 | 東洋運搬機株式会社 | Loader handling equipment |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4243392A1 (en) * | 1992-12-21 | 1994-07-07 | Agie Ag Ind Elektronik | Method and device for electroerosive machining |
| JP5108132B1 (en) * | 2011-06-10 | 2012-12-26 | ファナック株式会社 | Wire electric discharge machine that performs taper machining by tilting the workpiece |
| CN102785128B (en) * | 2012-07-30 | 2016-01-20 | 广东工业大学 | The part processing precision on-line detecting system of NC Machine lathe and detection method |
| DE102019127052A1 (en) * | 2019-10-08 | 2021-04-08 | Grob-Werke Gmbh & Co. Kg | Method for determining at least one transfer position in a machine tool and machine tool |
-
1982
- 1982-05-28 JP JP9079682A patent/JPS58206316A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04126947U (en) * | 1991-05-02 | 1992-11-19 | 東洋運搬機株式会社 | Loader handling equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58206316A (en) | 1983-12-01 |
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