JPS59175925A - Wire-cut electric discharge device - Google Patents

Wire-cut electric discharge device

Info

Publication number
JPS59175925A
JPS59175925A JP4656583A JP4656583A JPS59175925A JP S59175925 A JPS59175925 A JP S59175925A JP 4656583 A JP4656583 A JP 4656583A JP 4656583 A JP4656583 A JP 4656583A JP S59175925 A JPS59175925 A JP S59175925A
Authority
JP
Japan
Prior art keywords
wire
amount
workpiece
machining
corner
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
JP4656583A
Other languages
Japanese (ja)
Inventor
Makoto Goto
誠 後藤
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.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
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 Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP4656583A priority Critical patent/JPS59175925A/en
Publication of JPS59175925A publication Critical patent/JPS59175925A/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
    • B23H7/06Control of the travel curve of the relative movement between electrode and workpiece
    • B23H7/065Electric circuits specially adapted therefor

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 prevent a corner part from becoming dull by a method wherein the corner is cut excessively along the same direction as the segment of a line to the corner by an amount corresponding to the amount of deflection of a wire, thereafter, the wire is returned into the reverse direction by the same amount and the corner is cut by the wire toward the next segment of a line. CONSTITUTION:When the wire-cutting is shifted from the prior segment of the working line X1 at the corner to the next segment of the working line Y1 at the same corner, the the wire is cut into a work excessively into the X-direction by the amount corresponding to the deflecting amount t1 of the wire 3. Thereafter, the wire is returned into the reverse direction by the amount t1, then the working in the direction Y1 is effected. The setting of the deflecting amount t1 is effected arbitrarily by a worker based on a trial working or the like.

Description

【発明の詳細な説明】 技術分野 本発明は、ワイヤーカット装置に関し、特に、コーナ一
部の加工を正確に行い得るようにしたものである。
DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a wire cutting device, and more particularly, to a wire cutting device that is capable of accurately machining a portion of a corner.

従来技術 ワイヤーカット放電加工においては電極がワイヤーであ
るが故に、放電の圧力を受けて第1図に示すようにワイ
ヤーWが被加工物Mとの相対移動方向と反対方向にたわ
み、そのため、数値データに基く一つの補間終了後に直
ちに次の補間作業に移行すると、そのコーナ部において
、第2図に示すように内側のカド部が落とされてしまう
所謂ダしが生じ、正確な放電加工を行うことができない
In conventional wire-cut electric discharge machining, since the electrode is a wire, the wire W is bent in the direction opposite to the direction of relative movement with the workpiece M due to the pressure of the electric discharge, as shown in Fig. 1, and as a result, the numerical value If you move on to the next interpolation immediately after completing one interpolation based on the data, the inner corner part will fall off at the corner, as shown in Figure 2, resulting in a so-called sagging, which makes it difficult to perform accurate electrical discharge machining. I can't.

そのため、従来においては、例えば特開昭57−717
30号のようにコーナ部の加工時にワイヤーの張力を高
めるようにしたものが案出されているが、そのものにお
いてはワイヤーの張力を変更するための装置が必要であ
って構成が複雑となると共に、その張力の制御が大変外
しいものであった。
Therefore, in the past, for example, Japanese Patent Laid-Open No. 57-717
A device such as No. 30 has been devised in which the tension of the wire is increased when machining the corner part, but this requires a device to change the tension of the wire, making the configuration complicated and However, the tension was extremely difficult to control.

目         的 本発明は、従来の欠点を解消するために為されたもので
あって、コーナ部のダレを防止し、正確な加工を行い得
るワイヤー放電加工装置を提供するものである。
Purpose The present invention was made in order to eliminate the drawbacks of the conventional wire, and provides a wire electrical discharge machining device that can prevent sagging at corners and perform accurate machining.

解決手段 上記目的を達成するために、本発明は(a )放電加工
時に生じるワイヤー電極のタワミ量に相当する大きさを
設定する設定手段を備えると共に、(b)@記ワイヤー
電極と被加工物との相対移動を制御する数値制御手段が
コーナ部の加工時に、そのコーナ部までの補間線分と同
方向に前記設定手段によって設定されたタワミ量に相当
する量だけワイヤー電極と被加工物とを相対的に移動さ
せた後、逆方向に同量だけ復動させ、次の補間線分にお
ける加工を実行させるコーナ部加工補正手段を含むよう
に構成されている。
Solution: In order to achieve the above object, the present invention includes (a) a setting means for setting a size corresponding to the amount of deflection of the wire electrode that occurs during electric discharge machining, and (b) a setting means for setting a size corresponding to the amount of deflection of the wire electrode that occurs during electrical discharge machining. When machining a corner part, a numerical control means for controlling the relative movement between the wire electrode and the workpiece moves the wire electrode and the workpiece in the same direction as the interpolated line segment up to the corner part by an amount corresponding to the amount of deflection set by the setting means. The corner processing correction means is configured to include a corner portion machining correction means for relatively moving, and then moving back by the same amount in the opposite direction to execute machining on the next interpolated line segment.

従って、本発明は、コーナ部の加工時に]−す部加工補
正手段の補正に基いてワイヤー電極が被加工物のコーナ
部に対して正確に移送されてコーナ部のダレの発生を防
止できる。
Therefore, in the present invention, when machining a corner part, the wire electrode is accurately transferred to the corner part of the workpiece based on the correction by the corner part machining correction means, thereby preventing the occurrence of sag in the corner part.

実   施   例 以下に本発明を具体化した一実施例を示す第3図乃至第
7図を参照してその詳細を説明する。
Embodiment The details of an embodiment of the present invention will be explained below with reference to FIGS. 3 to 7.

第3図に示すように被加工物1を保持するテーブル2は
、二個の駆動モータMX、MYによって一平面上におい
て任意の方向に移動される。前記被加工物1の上方及び
下方には、上ガイド4及び下ガイド5が配設されると共
に、その上ガイド4とワイヤー電極3の供給リール8と
の間、及び前記下ガイド5と、前記ワイヤー電極3の巻
取リール9との間には、夫々案内ローラ6.7が配設さ
れている。それらの案内ローラ6.7、及び前記供給リ
ール8、巻取リール9はそれらを回転駆動するソイA2
−送りモータ6a 、 7a 、 8a 、 9aが夫
々連結され、それらのワイヤー送りモータ6a 、 7
a 、、F3a 、 9aが回転駆動されるのに伴っで
、航記ワイj7−ffi極3は、供給リール8より案内
ローラ6、上ガイド4.被加工物1.下ガイド5、案内
ローラ7を介して巻取リール9に移送される。
As shown in FIG. 3, the table 2 holding the workpiece 1 is moved in any direction on one plane by two drive motors MX and MY. An upper guide 4 and a lower guide 5 are disposed above and below the workpiece 1, and between the upper guide 4 and the supply reel 8 of the wire electrode 3, and between the lower guide 5 and the Guide rollers 6.7 are arranged between the wire electrodes 3 and the take-up reel 9, respectively. Those guide rollers 6.7, the supply reel 8, and the take-up reel 9 are rotated by a soy A2 that drives them.
- The feed motors 6a, 7a, 8a, 9a are connected, respectively, and the wire feed motors 6a, 7
As F3a, F3a, 9a are rotated, the guide roller 6, upper guide 4, . Workpiece 1. It is transferred to a take-up reel 9 via a lower guide 5 and a guide roller 7.

また、前記ワイヤー電極3と被加工物1とは、夫々放電
回路10に接続されている。その放電回路10は、電源
11に抵抗12を介して接続され前記ワイヤー電極3と
被加工物1との間に放電エネルギーを供給するコンデン
サ13と、そのコンデンサ13とワイヤー電極3との放
電経路上に接続されたスイッチ素子14とにより構成さ
れ、そのスイッチ素子14がオンされた時、前記被加工
物1とワイヤー電極3との間において放電が発生〕 するように、コンデンサー3に充電された電荷が前記被
加工物1とワイヤー電極3との間に印加される。
Further, the wire electrode 3 and the workpiece 1 are connected to a discharge circuit 10, respectively. The discharge circuit 10 includes a capacitor 13 connected to a power source 11 via a resistor 12 and supplying discharge energy between the wire electrode 3 and the workpiece 1, and a discharge path between the capacitor 13 and the wire electrode 3. When the switch element 14 is turned on, a discharge is generated between the workpiece 1 and the wire electrode 3. is applied between the workpiece 1 and the wire electrode 3.

次に、前記スイッチ素子14、ワイヤ送りモータ6a、
7a、 8a、9a、駆動モータMX、MYを制御する
数値制御装置16について第4図のブロック図を参照し
て説明する。数値制御装置15は、前記スイッチ素子1
4に出力する放電制御部16と、ワイヤ送りモータ(3
a、7a、8a。
Next, the switch element 14, the wire feed motor 6a,
The numerical control device 16 that controls the drive motors 7a, 8a, 9a and the drive motors MX and MY will be explained with reference to the block diagram of FIG. The numerical control device 15 includes the switch element 1
4 and a wire feed motor (3
a, 7a, 8a.

9aに駆動信号を出力するワイヤー送り制御11部17
と、駆動モータMX、MYに補間制御信号を出力する被
加工物送り制御部18と、コーナ部の加工時に前記駆動
モータMX、MYに送り信号を出力するコーナ部加工補
正部19とにより構成されている。
Wire feed control 11 section 17 that outputs a drive signal to 9a
, a workpiece feed control section 18 that outputs an interpolation control signal to the drive motors MX and MY, and a corner section machining correction section 19 that outputs a feed signal to the drive motors MX and MY when machining a corner section. ing.

また、数値制御装置16の入力側には、起動スイッチ2
0.加工形状を指定するためにテーブル2の送りデータ
を入力する送りデータ入力装置21.1及び、加工特に
前記上下ガイド4.5との間において生ずるワイヤー電
極3のタワミ量に相当する大きさを設定するコーナ部オ
フセット設定器22とが接続されている。
Additionally, a start switch 2 is provided on the input side of the numerical control device 16.
0. A feed data input device 21.1 for inputting feed data from table 2 to specify the machining shape, and a size corresponding to the amount of deflection of the wire electrode 3 that occurs during machining, especially between the upper and lower guides 4.5, are set. A corner offset setting device 22 is connected thereto.

而して、加工時には、予め、送りデータ入力装置21よ
りテーブル2の送りデータが被加工物送り制御部18に
入力されて、その送り制御部18内に記憶されると共に
、前記コーナ部オフセット設定器22より加工時に生ず
るワイヤー電極3のタワミff1(tl)に相当する大
きさのデータがコーナ部加工補正部19に入力されてそ
の補正部19内に記憶される。
During machining, the feed data of the table 2 is input in advance from the feed data input device 21 to the workpiece feed control section 18 and stored in the feed control section 18, and the corner offset setting is Data of a size corresponding to the deflection ff1 (tl) of the wire electrode 3 generated during machining is inputted from the device 22 to the corner machining correction section 19 and stored in the correction section 19.

尚、ワイヤー電極3のタワミit1は、被加工物の板厚
、材質、粒度、放電電圧、テーブル2の送り速度、ワイ
ヤー電極のテンション及び移送速度、上下ガイド4,5
の位置(高さ)等によって異なるため、加工する被加工
物を一度加工してみて、その加工状態及び加工結果に基
いて作業者が任意に決定されて設定される。
The deflection IT1 of the wire electrode 3 is based on the thickness, material, grain size, discharge voltage of the workpiece, feed speed of the table 2, tension and transfer speed of the wire electrode, and the upper and lower guides 4 and 5.
Since this varies depending on the position (height), etc., the operator is arbitrarily determined and set based on the machining state and machining results after machining the workpiece once.

その後、起動スイッチ20が押されると、前記送りデー
タに基いて被加工物送り制御部18より駆動モータMX
、MYに補間制御信号が出力されてテーブル2が所定の
方向にワイヤー電極3に対して補間移動される。また、
放電制御部16より所定の間隔でスイッチ素子14がオ
ン、オフされるようにオンオフ信号が出力されると共に
、ワイヤー送り制御部17より各ワイヤー送りモータ6
a、7a、8a、9aが駆動されるように駆動信号が出
力される。
Thereafter, when the start switch 20 is pressed, the drive motor MX is controlled by the workpiece feed control section 18 based on the feed data.
, MY are output, and the table 2 is interpolated and moved in a predetermined direction with respect to the wire electrode 3. Also,
The discharge control section 16 outputs an on/off signal so that the switch element 14 is turned on and off at predetermined intervals, and the wire feed control section 17 outputs an on/off signal to turn on and off the switch element 14 at predetermined intervals.
A drive signal is output so that a, 7a, 8a, and 9a are driven.

而して、被加工物1とワイヤー電極3との間において放
電が発生され、その放電エネルギーにより被加工物1が
所定の輪かく形状に加工される。
Thus, an electrical discharge is generated between the workpiece 1 and the wire electrode 3, and the workpiece 1 is machined into a predetermined hoop shape by the discharge energy.

次に、コーナ部の加工方法について第5図の説明図、及
び第7図のフローチャー1〜に従って説明する。
Next, a method of machining the corner portion will be explained according to the explanatory diagram of FIG. 5 and the flowchart 1 to FIG. 7.

放電を発生させながら第5図に示す補間線分×1上を矢
印X方向に移動させた後、次の補間線分Y1を加工する
際には、コーナ部加工補正部19により、予め記憶され
たタワミ量に相当するデータ(tl)の量だけ前記線分
×1と同一線分上に更に同一方向(矢印X方向)にテー
ブル2を更に移動させ、次に、コーナ部補正部19より
放電制御部16に放電を停止するように支持して放電を
停止させた後、前記データ(tl)の量だけ前記線分×
1土を矢印X方向と逆方向に移動させ、次に再び放電を
開始するように制御する。
After moving in the direction of the arrow X on the interpolation line segment x1 shown in FIG. The table 2 is further moved in the same direction (direction of arrow After the control unit 16 is instructed to stop the discharge and the discharge is stopped, the line segment × by the amount of the data (tl) is
1 The soil is moved in the direction opposite to the arrow X direction, and then the discharge is controlled to start again.

その後、被加工物送り制御部18より補間線分Y1を矢
印Y方向に移動するように各駆動モータN=lX、MY
に補間信号を出ツノする。
After that, the workpiece feed control unit 18 causes each drive motor N=lX, MY to move the interpolated line segment Y1 in the direction of arrow Y.
An interpolated signal is output.

このようにして、所定の加工が終了すると、テーブル2
の移動が停止されると共に、被加工物送り制御部18よ
りワイヤー送り制御17及び放電制御部16に終了信号
が出力されて、ワイヤー電極3の移送が停止されると共
に、放電が停止される。
In this way, when the predetermined processing is completed, the table 2
At the same time, the movement of the wire electrode 3 is stopped, and a termination signal is output from the workpiece feed control section 18 to the wire feed control section 17 and the discharge control section 16, and the transfer of the wire electrode 3 is stopped, and the discharge is stopped.

効       果 本発明は以上詳述したように、ワイヤー電極のタワミ量
に相当する大きさのデータを予め設定しておき、補間線
分の接続点であるコーナ部の加工時に、その]−す部ま
での補間線分と同方向に前記タワミ量に相当する量だけ
ワイヤー電極と被加工物とを相対的に移動させた後、逆
方向に同量だけ復動させ、次の補間線分を実行するよう
にしたものであるがら、コーナ部のダレを防止し、正確
な加工を行い得るものである。
Effects As described in detail above, the present invention sets in advance data of a size corresponding to the amount of deflection of the wire electrode, and when machining the corner portion which is the connection point of the interpolated line segment, the After relatively moving the wire electrode and workpiece by an amount corresponding to the deflection amount in the same direction as the previous interpolation line segment, move the wire electrode and workpiece back by the same amount in the opposite direction, and execute the next interpolation line segment. Although it is designed to do so, it prevents sagging at the corners and allows accurate machining.

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

第1図、第2図は従来の欠点を説明するための説明図、
第3図乃至第7図は本発明の一実施例を示すもので、第
3図はワイヤカット放電装置の構成図、第4図はブロッ
ク図、第5図はワイヤー電極の相対移動軌跡を説明する
ための説明図、第6図はワイヤー電極のたわみを説明す
る図、第7図はコーナ部の加工方法を説明するためのフ
ローチャートである。 図中1は被加工物、2はテーブル、3はワイヤー電極、
10は放電回路、15は数値制御回路、1つはコーナ部
加工補正部、22はコーナ部オフセット設定器、MX、
MYは駆動モータである。 特許出願人 ブラザー工業株式会社 取締役社長 河嶋勝ニ 第5図
Figures 1 and 2 are explanatory diagrams for explaining the conventional drawbacks,
Figures 3 to 7 show one embodiment of the present invention, with Figure 3 being a configuration diagram of a wire-cut discharge device, Figure 4 being a block diagram, and Figure 5 explaining the relative movement locus of the wire electrodes. FIG. 6 is an explanatory diagram for explaining the bending of the wire electrode, and FIG. 7 is a flowchart for explaining the method of machining the corner portion. In the figure, 1 is the workpiece, 2 is the table, 3 is the wire electrode,
10 is a discharge circuit, 15 is a numerical control circuit, 1 is a corner processing correction section, 22 is a corner offset setting device, MX,
MY is a drive motor. Patent Applicant Brother Industries, Ltd. President Katsuni Kawashima Figure 5

Claims (1)

【特許請求の範囲】 1、ワイヤー電極(3)と被加工物(1)とを相対的に
移動させるための駆動手段<MX、MY。 2)と、 その駆動手段(MX、MY、、2)を数値情報に基いて
補間制御する数値制御手段(15)と、前記ワイヤー電
極(3)と被加工物(1)との間に放電を発生させるた
めの放電手段(16)とを備え、 前記放電エネルギーにより被加工物(1)を所望形状に
加工づるワイヤーカット放電装置において、 前記加工時に生ずるワイヤー電極(3)のタワミ量に相
当する大きさを設定する手段(22)を備えると共に、 前記数値制御手段(15)は、補間線分の接続点である
コーナ部の加工時に、そのコーナ部までの補間線分(x
l)と同方向に前記設定手段(22)によって設定され
たタワミ量に相当する量([1)だけワイヤー電極(3
)と被加工物(1)とを相対的に移動させた後、逆方向
に同量だけ復動させ、次の補間線分くYl)における加
工を実行させるコーナ部加工補正手段〈19)を含むこ
とを特徴とするワイヤーカット放電装置。
[Claims] 1. Driving means for relatively moving the wire electrode (3) and the workpiece (1) <MX, MY. 2), a numerical control means (15) that interpolates and controls the drive means (MX, MY, 2) based on numerical information, and an electrical discharge between the wire electrode (3) and the workpiece (1). A wire-cut electric discharge device for machining a workpiece (1) into a desired shape by the discharge energy, the wire-cut electric discharge device comprising a discharge means (16) for generating a sag corresponding to the amount of deflection of the wire electrode (3) generated during the machining. The numerical control means (15) includes means (22) for setting the size of the interpolated line segment (x
l) in the same direction as the wire electrode (3) by an amount ([1) corresponding to the amount of deflection set by the setting means (22).
) and the workpiece (1), and then move back in the opposite direction by the same amount to perform the machining on the next interpolation line segment (Yl). A wire-cut discharge device comprising:
JP4656583A 1983-03-18 1983-03-18 Wire-cut electric discharge device Pending JPS59175925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4656583A JPS59175925A (en) 1983-03-18 1983-03-18 Wire-cut electric discharge device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4656583A JPS59175925A (en) 1983-03-18 1983-03-18 Wire-cut electric discharge device

Publications (1)

Publication Number Publication Date
JPS59175925A true JPS59175925A (en) 1984-10-05

Family

ID=12750837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4656583A Pending JPS59175925A (en) 1983-03-18 1983-03-18 Wire-cut electric discharge device

Country Status (1)

Country Link
JP (1) JPS59175925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878458A (en) * 2012-12-21 2014-06-25 发那科株式会社 Wire Electric Discharge Machine That Automatically Corrects Machining Route According To Corner Angle
EP2754522A3 (en) * 2013-01-09 2014-11-26 Fanuc Corporation Wire electrical discharge machine which corrects machining path in corner portion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878458A (en) * 2012-12-21 2014-06-25 发那科株式会社 Wire Electric Discharge Machine That Automatically Corrects Machining Route According To Corner Angle
EP2745971A3 (en) * 2012-12-21 2014-11-26 Fanuc Corporation Wire electric discharge machine that automatically corrects machining route according to corner angle
US9370837B2 (en) 2012-12-21 2016-06-21 Fanuc Corporation Wire electric discharge machine that automatically corrects machining route according to corner angle
EP2754522A3 (en) * 2013-01-09 2014-11-26 Fanuc Corporation Wire electrical discharge machine which corrects machining path in corner portion
US9724776B2 (en) 2013-01-09 2017-08-08 Fanuc Corporation Wire electrical discharge machine which corrects machining path in corner portion

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