JPH0373226A - Corner control for nc wire discharge machine - Google Patents

Corner control for nc wire discharge machine

Info

Publication number
JPH0373226A
JPH0373226A JP1203718A JP20371889A JPH0373226A JP H0373226 A JPH0373226 A JP H0373226A JP 1203718 A JP1203718 A JP 1203718A JP 20371889 A JP20371889 A JP 20371889A JP H0373226 A JPH0373226 A JP H0373226A
Authority
JP
Japan
Prior art keywords
corner
control
corner control
control section
program
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
JP1203718A
Other languages
Japanese (ja)
Inventor
Osamu Ochi
修 越智
Yasunori Ono
靖典 小野
Jiro Hiramine
平峰　二郎
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.)
Amada Wasino Co Ltd
Original Assignee
Amada Wasino Co 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 Amada Wasino Co Ltd filed Critical Amada Wasino Co Ltd
Priority to JP1203718A priority Critical patent/JPH0373226A/en
Priority to GB9017314A priority patent/GB2237127A/en
Priority to KR1019900012303A priority patent/KR910004286A/en
Priority to DE4025164A priority patent/DE4025164A1/en
Priority to FR9010145A priority patent/FR2650771A1/en
Priority to IT02123890A priority patent/IT1244172B/en
Publication of JPH0373226A publication Critical patent/JPH0373226A/en
Pending legal-status Critical Current

Links

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
    • 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
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • 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
    • B23H7/02—Wire-cutting
    • B23H7/06—Control of the travel curve of the relative movement between electrode and workpiece
    • B23H7/065—Electric circuits specially adapted therefor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
    • G05B19/40937—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine concerning programming of machining or material parameters, pocket machining
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/35—Nc in input of data, input till input file format
    • G05B2219/35244—Select in corner different program according to inner, outer machining
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45221—Edm, electrical discharge machining, electroerosion, ecm, chemical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Automation & Control Theory (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Numerical Control (AREA)

Abstract

PURPOSE:To simplify the structure of a control device and provide high-speed distribution by inserting a corner control section and a corner control code into an NC program automatically before or behind, or before and behind a corner part when a corner angle requires pre-registered corner control. CONSTITUTION:A step 5 is a corner control on.off switch a worker operates. When this switch is on, a corner angle is calculated with steps 6, 7, and a corner control section corresponding to it is compared with the memory in a pre-registered control section for determination to insert and add the corner control start and finish commands of M46 and M47 to NC data corresponding to the above control section and prepare an NC program with a step 8. The M46 restrains machining energy and decreases feed speed, and M47 returns these to the original position.

Description

【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） この発明はＮＣワイヤ放電加工機のコーナ制御方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a corner control method for an NC wire electric discharge machine.

（従来の技術） ＮＣワイヤ放電加工機においては、例えば第３図のよう
にワイヤ電極の中央部が放電の反力により、加工進行方
向に対して後れる傾向があり、被加工物のコーナ部にお
ける角ダレやワイヤの断線の原因になっていた。この角
部におけるダレを極力少なくするため、または高速加工
における角部でのワイヤ断線を防止するために、近年、
多くのワイヤ放電加工機に、コーナ制御機能を備えるよ
うになった。(Prior Art) In an NC wire electrical discharge machine, for example, as shown in Fig. 3, the center part of the wire electrode tends to move backward in the machining direction due to the reaction force of the electrical discharge, and the corner part of the workpiece is This caused corners to sag and wires to break. In recent years, in order to minimize the sagging at the corners or to prevent wire breakage at the corners during high-speed machining,
Many wire electrical discharge machines are now equipped with corner control functions.

コーナ制御機能は、加工径路上のコーナを判別し、コー
ナ部の前、もしくはコーナ通過後の任意の区間、加工エ
ネルギもしくは加工速度をコントロールし、ワイヤ電極
の後れにより発生する角ダレや、ワイヤ断線を、最小限
に抑えようとするものである。このコーナ制御機能を実
現するために、制御装置は下記の□ような項目を実行す
る必要があった。The corner control function identifies corners on the machining path and controls the machining energy or machining speed at any section before the corner or after passing the corner, and prevents angular sagging caused by trailing of the wire electrode. The aim is to minimize disconnections. In order to realize this corner control function, the control device needed to perform the following items.

ａ、現在の実行ブロックと次の実行ブロックの間のコー
ナ角の算出。a. Calculation of the corner angle between the current execution block and the next execution block.

ｂ、ａて算出したコーナ角がコーナ制御が必要なコーナ
であるか否かの判定。b. Determining whether or not the calculated corner angle is a corner that requires corner control.

ｃ、ｂにおいてコーナ制御が必要と判定された場合、コ
ーナ部前後のコーナ制御区間の算出。If corner control is determined to be necessary in c and b, calculation of corner control sections before and after the corner.

ｄ、現在の実行ブロックにおいてコーナ制御区間に到達
したか否かの監視。d. Monitoring whether a corner control section has been reached in the current execution block.

０１次の実行ブロックにおいてコーナ制御区間が終了し
たか否かの監視。01 Monitoring whether the corner control section has ended in the next execution block.

（発明が解決しようとする課題） 前記のような項目を制御装置が本来のＮＣ制御の外に処
理することは、制御装置にとって、大きな負担となって
いた。また、インボリューギアのように細かいブロック
が連続するような形状では、ブロック長がコーナ制御間
長より短かくなり、数ブロック先までの計算を行なう必
要があり、制御装置にとって更に大きな負担となってい
た。(Problems to be Solved by the Invention) It has been a heavy burden on the control device for the control device to process the above-mentioned items outside of the original NC control. In addition, for shapes such as involume gears that have successive small blocks, the block length is shorter than the corner control distance, and calculations need to be made several blocks ahead, placing an even greater burden on the control device. was.

一方、加工用電源の進歩、ワイヤ走行系の改良、加工方
法の多様化等により、コーナ制御区間長や、コーナ制御
が必要な角部の判定等を、臨時変更したい場合が多くあ
り、上記のコーナ制御判定基準を制御装置へ組入れた場
合は、融通性に乏しくなるという問題もあった。On the other hand, due to advancements in machining power supplies, improvements in wire running systems, and diversification of machining methods, there are many cases where it is necessary to temporarily change the corner control section length and the determination of corners that require corner control. Incorporating corner control criteria into a control device also poses a problem of lack of flexibility.

この発明は、このような問題に着目して創案されたもの
で、加工精度の向上、高速加工時のワイヤ断線防止等に
有効なコーナ制御を実施すると共に、制御装置に大きな
負担をかけない方法を提供することを目的とするもので
ある。This invention was created with a focus on these problems, and provides a method that implements corner control that is effective for improving machining accuracy and preventing wire breakage during high-speed machining, and that does not place a large burden on the control device. The purpose is to provide the following.

［発明の構成］ （課題を解決するための手段） 前記の目的を遠戚するために、この発明のコーナ制御方
法は、被加工物の加工形状のコーナ角を算出し、このコ
ーナ角が予め登録されたコーナ制御を必要とする場合に
は、このコーナ部の前もしくは後、もしくは後、もしく
は前後にコーナ制御区間及びコーナ制御用コードを、Ｎ
Ｃプログラムに自動的に挿入するものである。こ＼でコ
ーナ制御用コードとは、コーナ制御開始及びコーナ制御
終了を指令するコードである。[Structure of the Invention] (Means for Solving the Problem) In order to distantly achieve the above-mentioned object, the corner control method of the present invention calculates the corner angle of the machined shape of the workpiece, and calculates the corner angle in advance. If registered corner control is required, the corner control section and corner control code should be placed before, after, or before and after this corner.
It is automatically inserted into the C program. Here, the corner control code is a code for commanding the start and end of corner control.

（作用） このように構成されているので、コーナ制御のプログラ
ムは、ＮＣ制御部とは別のコンピュータにより作成され
るため、ＮＣ制御部で従来のようなコーナ角の判定や、
コーナ制御部区間の計算等の複雑な処理を行なう必要が
ない。したがって、従来のようなＮＣ制御部へか＼る負
担が大幅に軽減する。(Function) With this configuration, the corner control program is created by a computer separate from the NC control unit, so the NC control unit can determine the corner angle as in the conventional case.
There is no need to perform complicated processing such as calculation of corner control sections. Therefore, the burden placed on the conventional NC control section is significantly reduced.

（実施例） 次に、この発明の実施例について第１図に基づいて説明
する。このフローチャートは自動プログラミングシステ
ムによってＮＣテープを作成する際の流れを示したもの
である。まずステップ１で加工形状及びワイヤ電極の移
動の手順等から構成されたパートプログラムを入力する
。ステップ２及び３でワイヤ電極の経路が算出されＣＬ
データ（ワイヤ電極の軌跡データ）が作成される。ステ
ップ４でＣＬデータはＮＣ装置の形式に対応したＮＣデ
ータに変換される。(Example) Next, an example of the present invention will be described based on FIG. This flowchart shows the flow of creating an NC tape using an automatic programming system. First, in step 1, a part program consisting of a processing shape, a procedure for moving the wire electrode, etc. is input. In steps 2 and 3, the wire electrode path is calculated and the CL
Data (wire electrode trajectory data) is created. In step 4, the CL data is converted to NC data corresponding to the format of the NC device.

ステップ５は作業者が操作するコーナ制御０Ｎ−ＯＦＦ
スイッチで、これがＯＮにしであると、ステップ６及び
７でコーナ角を算定し、これに対応する制御区間を、予
め登録された制御区間のメモリと照合決定し、前記のＮ
Ｃデータにこの制御区間を追加し、ステップ８でＮＣプ
ログラムが作成される。前記のスイッチがＯＦＦである
と、コーナ制御区間のない従来通りのＮＣプログラムが
作成される。ステップ８で作成されたＮＣプログラムは
、ステップってＮＣテープとして出力される。Step 5 is corner control 0N-OFF operated by the operator.
If the switch is turned on, the corner angle is calculated in steps 6 and 7, the corresponding control section is determined by comparing it with the memory of the control section registered in advance, and the above-mentioned N
This control section is added to the C data, and an NC program is created in step 8. When the switch is OFF, a conventional NC program without corner control sections is created. The NC program created in step 8 is output as an NC tape.

この発明の方法によるＮＣプログラムの１例を第２図に
示しである。すなわち、直角のコーナ部において、コー
ナの前後にコーナ制御区間０．　３ｍｍを挿入し、これ
に対応してＭ４６．Ｍ４７のコーナ制御開始、終了命令
を挿入したものである。An example of an NC program according to the method of the present invention is shown in FIG. That is, at a right-angled corner, there is a corner control section 0. 3mm and correspondingly M46. The M47 corner control start and end commands are inserted.

このＭ４６により加工エネルギを抑え、または加工速度
にオーバライドをかけ、送り速度を小さくし、Ｍ４７に
より元に戻させる。This M46 suppresses machining energy or overrides the machining speed to reduce the feed rate, and M47 returns it to the original value.

加工電源やワイヤ走行系の改良、高速加工や多重加工な
ど状況に応じて、コーナ制御方法を変更する必要がある
場合は、第１図のステップ６及び７で説明した予め登録
されたコーナ制御パラメータメモリを、パラメータの変
更により容易に対処することができる。If it is necessary to change the corner control method depending on the situation, such as improving the machining power supply or wire running system, high-speed machining, or multiple machining, use the pre-registered corner control parameters explained in steps 6 and 7 in Figure 1. Memory can be easily accommodated by changing parameters.

また、この実施例ではコーナ制御のために、特別なＭコ
ードを定義しているが、ブロック数を節約するために、
コーナ制御を行なう特別な補間用のＧコードを定義して
もよい。Also, in this embodiment, a special M code is defined for corner control, but in order to save the number of blocks,
A special interpolation G-code may be defined to perform corner control.

また、この実施例では、自動プログラム作成装置にて、
コーナ制御用のブロックを作成しているが、制御装置が
ＮＣプログラムを読み込み、ＮＣ運転を開始する前に予
めコーナ制御計算を含むデータに再編集する方法をとっ
てもよい。In addition, in this embodiment, the automatic program creation device
Although blocks for corner control are created, a method may also be used in which the control device reads the NC program and re-edits the data including corner control calculations in advance before starting NC operation.

［発明の効果コ 以上の説明から理解されるように、この発明は特許請求
の範囲に記載の構成を備えているので、この方法によれ
ば、加工機をＮＣ制御する制御装置側でコーナ角の判定
やコーナ制御区間の計算等の複雑な処理を行う必要がな
い。したがって、制御装置の構成が簡素化され、また分
配処理の高速化が可能になる。また、登録パラメータの
変更により加工電源やワイヤ走行系の改良、高速加工や
多重加工など状況に応じ、コーナ制御方法を随時選択す
ることができる。[Effects of the Invention] As can be understood from the above explanation, the present invention has the structure set forth in the claims. According to this method, the corner angle is There is no need to perform complex processing such as determination of , calculation of corner control sections, etc. Therefore, the configuration of the control device is simplified, and distribution processing can be speeded up. Furthermore, by changing the registered parameters, the corner control method can be selected at any time depending on the situation, such as improvement of the machining power supply and wire running system, high-speed machining, multiple machining, etc.

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

第１図はこの発明の実施例のフローチャート、第２図は
この発明によるコーナ部のＮＣプログラムの説明図、第
３図はワイヤ電極の中央部の後れを示す説明図である。FIG. 1 is a flowchart of an embodiment of the present invention, FIG. 2 is an explanatory diagram of an NC program for a corner portion according to the present invention, and FIG. 3 is an explanatory diagram showing rearward movement of a central portion of a wire electrode.

Claims (1)

【特許請求の範囲】[Claims] 被加工物の加工形状のコーナ角を算出し、このコーナ角
が予め登録されたコーナ制御を必要とする場合には、コ
ーナ部の前、もしくは後、もしくは前後にコーナ制御区
間及びコーナ制御用コードを、ＮＣプログラムに自動的
に挿入することを特徴とするＮＣワイヤ放電加工機のコ
ーナ制御方法。If the corner angle of the machined shape of the workpiece is calculated, and this corner angle requires corner control that is registered in advance, a corner control section and a corner control code are added before, after, or before and after the corner. A corner control method for an NC wire electric discharge machine, characterized in that the following is automatically inserted into an NC program.
JP1203718A 1989-08-08 1989-08-08 Corner control for nc wire discharge machine Pending JPH0373226A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1203718A JPH0373226A (en) 1989-08-08 1989-08-08 Corner control for nc wire discharge machine
GB9017314A GB2237127A (en) 1989-08-08 1990-08-07 Method for machining a corner section in a workpiece by means of NC electro-discharge machining apparatus
KR1019900012303A KR910004286A (en) 1989-08-08 1990-08-08 Corner processing control method of numerically controlled (MC) electric discharge machine
DE4025164A DE4025164A1 (en) 1989-08-08 1990-08-08 METHOD FOR MACHINING A CORNER SECTION OF A WORKPIECE BY MEANS OF AN NC ELECTRICAL DISCHARGE MACHINING DEVICE
FR9010145A FR2650771A1 (en) 1989-08-08 1990-08-08 METHOD FOR MACHINING A CORNER PART IN A WORKPIECE USING A DIGITAL CONTROL ELECTRIC DISCHARGE MACHINING APPARATUS AND DEVICE FOR PREPARING A CONTROL PROGRAM FOR THE APPARATUS
IT02123890A IT1244172B (en) 1989-08-08 1990-08-08 PROCEDURE FOR THE PROCESSING OF A CORNER SECTION OF A PIECE BY MEANS OF AN NC PROCESSING AND ELECTRIC DISCHARGE EQUIPMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1203718A JPH0373226A (en) 1989-08-08 1989-08-08 Corner control for nc wire discharge machine

Publications (1)

Publication Number Publication Date
JPH0373226A true JPH0373226A (en) 1991-03-28

Family

ID=16478699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1203718A Pending JPH0373226A (en) 1989-08-08 1989-08-08 Corner control for nc wire discharge machine

Country Status (6)

Country Link
JP (1) JPH0373226A (en)
KR (1) KR910004286A (en)
DE (1) DE4025164A1 (en)
FR (1) FR2650771A1 (en)
GB (1) GB2237127A (en)
IT (1) IT1244172B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013190854A (en) * 2012-03-12 2013-09-26 Fanuc Ltd Wire electric discharge machine controller for correcting machining route using program commands

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Publication number Priority date Publication date Assignee Title
CN113118642A (en) * 2019-12-31 2021-07-16 江苏亚威机床股份有限公司 Laser cutting corner processing method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013190854A (en) * 2012-03-12 2013-09-26 Fanuc Ltd Wire electric discharge machine controller for correcting machining route using program commands
US9342061B2 (en) 2012-03-12 2016-05-17 Fanuc Corporation Wire electric discharge machine controller for correcting machining route using program commands

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KR910004286A (en) 1991-03-28
DE4025164A1 (en) 1991-02-28
GB9017314D0 (en) 1990-09-19
IT9021238A1 (en) 1992-02-08
FR2650771A1 (en) 1991-02-15
IT1244172B (en) 1994-07-08
IT9021238A0 (en) 1990-08-08
GB2237127A (en) 1991-04-24

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