JPS61182728A - Wire electric discharge machine - Google Patents
Wire electric discharge machineInfo
- Publication number
- JPS61182728A JPS61182728A JP2455986A JP2455986A JPS61182728A JP S61182728 A JPS61182728 A JP S61182728A JP 2455986 A JP2455986 A JP 2455986A JP 2455986 A JP2455986 A JP 2455986A JP S61182728 A JPS61182728 A JP S61182728A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- arm
- cutting
- contact
- discharge machining
- 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.)
- Granted
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
- B23H7/02—Wire-cutting
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
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明はワイヤカット放電加工装置、特にワイ゛V電極
を被加工物の下方に導くアームと被加工物支持部との接
触を未然に防止することのできる改良されたワイヤカッ
ト放電加工装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a wire-cut electric discharge machining device, in particular, to prevent contact between an arm that guides a wide V electrode below a workpiece and a workpiece support. The present invention relates to an improved wire-cut electric discharge machining device that can perform the following steps.
[従来の技術]
一対の電極ガイドにより走行可能に張架されたワイヤ電
極を被加工物に対向配置させ、ワイヤ電極と被加工物と
の間に糸鋸状の相対送りを与えて被加工物を所望の形状
に切断加工するワイヤカット放電加工装置が周知である
。この種の装置ではワイヤ電極を被加工物に貫通走行さ
せるため、被DOI物は加工槽内に支持台等により支持
され、その上下に設けられた電極ガイドによりワイヤ電
極が加工部に導かれている。そして、被加工物の下方で
は、下部電極ガイドがアームに固定され、アームを前記
支持部の間で相対移動させることにより前述した加工送
りが行われる。[Prior Art] A wire electrode, which is stretched so as to be runable by a pair of electrode guides, is arranged opposite to a workpiece, and a jig saw-like relative feed is applied between the wire electrode and the workpiece to move the workpiece. Wire-cut electrical discharge machining devices that cut into desired shapes are well known. In this type of equipment, in order to run the wire electrode through the workpiece, the DOI workpiece is supported in the processing tank by a support stand, etc., and the wire electrode is guided to the processing part by electrode guides provided above and below it. There is. A lower electrode guide is fixed to an arm below the workpiece, and the aforementioned processing feed is performed by relatively moving the arm between the supports.
第1図、第2図及び第3図には従来のワイヤカット放電
加工装置が示され、テーブル10上に載置された加工槽
12には被加工物支持部を形成する支持台14及び着脱
自在な補助支持台16が固 □定され、この支持部によ
り被加工物18が所定位置に固定支持されている。1, 2, and 3 show a conventional wire-cut electrical discharge machining apparatus, in which a machining tank 12 placed on a table 10 includes a support base 14 forming a workpiece support part and a removable A flexible auxiliary support stand 16 is fixed, and the workpiece 18 is fixedly supported in a predetermined position by this support.
被加工物18の上下には一対の電極ガイド20.22が
設けられ、下部電極ガイド22はアーム24に固定され
、各支持台14.16の間にある加工範囲内でアーム2
4が移動する。アーム24には案内ローラ26.28か
(It支され、図示していない供給リールからワイヤ電
4M30がローラ26.28を通って両軍4ffl)j
イド20.22により所望の加工部に導かれ、図示して
いない巻取リールにより巻取られる。A pair of electrode guides 20.22 are provided above and below the workpiece 18, the lower electrode guide 22 is fixed to the arm 24, and the arm 2 is fixed within the processing range between the respective supports 14.16.
4 moves. The arm 24 is supported by a guide roller 26.28 (it is supported, and a wire electric wire 4M30 passes through the roller 26.28 from a supply reel (not shown) to both sides 4ffl).
It is guided to a desired processing section by the guide 20, 22, and is wound up by a winding reel (not shown).
テーブル10及びアーム24はそれぞれ駆動モータ32
及び34により送り駆動され、被加工物18とワイヤ電
4※30との間に所望の加工送りが与えられ、この送り
形状は両駆動モータ32.34を制御する制御装置36
へ指令NCチー138から所望の2次元形状の指令を供
給することにより行われる。被加工物18とワイV電極
30との間には図示していない加工電源から給電接触子
を介してパルス電力が供給され、前記加工送り中波加工
物18が放電作用により切断加工される。The table 10 and the arm 24 are each driven by a drive motor 32.
and 34, a desired machining feed is given between the workpiece 18 and the wire electric wire 4*30, and this feed shape is determined by the control device 36 that controls both drive motors 32 and 34.
This is done by supplying a command for a desired two-dimensional shape from the command NC chip 138. Pulse power is supplied between the workpiece 18 and the W-V electrode 30 from a processing power supply (not shown) via a power supply contact, and the medium wave workpiece 18 is cut by electric discharge action.
し発明が解決しようとゴる問題点]
従来の問題点
従来のワイヤカット放電加工装置は以上の構成から成り
、アーム24は各支持台14.16の間を所定の送り形
状に従い移動するので、アーム24と各支持台14.1
6とが接触事故を生起し、加工不能おるいは装置の破損
事故等が生じるという欠点があり、特に補助支持台16
は被加工物18の形状及び送り形状に従ってhI工の都
度その固定位置が変動するので、アーム24との接触事
故か生じ易いという問題があった。[Problems to be Solved by the Invention] Conventional Problems The conventional wire-cut electrical discharge machining apparatus has the above configuration, and the arm 24 moves between the respective supports 14 and 16 according to a predetermined feeding shape. Arm 24 and each support 14.1
There is a disadvantage that contact with the auxiliary support 16 may occur, resulting in inability to process or damage to the equipment.
Since the fixing position of the arm changes each time the hI machining is performed according to the shape of the workpiece 18 and the feeding shape, there is a problem in that an accident of contact with the arm 24 is likely to occur.
発明の目的
本発明は上記従来の課題に鑑みなされたもので′あり、
その目的は、アームと被1ノロT物支持部との接触を未
然に防止することのできる改良されたワイヤカット放電
加工装置を提供することにおる。Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems.
The purpose is to provide an improved wire-cut electric discharge machining apparatus that can prevent contact between the arm and the first T-piece support.
[問題点を解決するための手段及び作用]上記目的を達
成するために、本発明は、前記従来のワイヤカット放電
加工装置において、アームに張架配設された接触検出ワ
イヤ(以後、検出ワイヤという)と検出ワイヤを挟むよ
うに配置された切断装置と、検出ワイヤの切断を検出す
る切断検出器と、を備え、被加工物支持部とアームとの
接触時に検出ワイヤを強制的に切断し、更に切断検出器
により切断を検出することを特徴とする。[Means and effects for solving the problems] In order to achieve the above object, the present invention provides a contact detection wire (hereinafter referred to as a detection wire) stretched over an arm in the conventional wire-cut electrical discharge machining apparatus. ), a cutting device arranged to sandwich the detection wire, and a cutting detector that detects cutting of the detection wire, and forcibly cuts the detection wire when the workpiece support comes into contact with the arm. , further characterized in that a cut is detected by a cut detector.
[実施例] 以下図面に基づいて本発明の好適な実施例を説明する。[Example] Preferred embodiments of the present invention will be described below based on the drawings.
第4図及び第5図には本発明の好適な実施例が示され、
従来装置と同一部材には同一符号を付して説明を省略す
る。A preferred embodiment of the present invention is shown in FIGS. 4 and 5,
Components that are the same as those of the conventional device are designated by the same reference numerals, and descriptions thereof will be omitted.
本発明において特徴的なことは、アームと被加工物支持
部との接触時に検出ワイヤを強制的に切断し、更にこの
切断を切断検出器で検出することでおる。A feature of the present invention is that the detection wire is forcibly cut when the arm comes into contact with the workpiece support, and this cut is further detected by a cut detector.
検出ワイヤ40はアーム24に張架配設され、その一端
が固定ピン42によりアーム24に固定され、またその
他端にはガイドローラ44及び46を介して平衡鍾48
が固定されている。平衡鍾48はアーム24に固定され
た保持台50に載置され、検出ワイヤ40の他端は調整
ボルト52によりその張力が調整されている。The detection wire 40 is stretched over the arm 24, and one end thereof is fixed to the arm 24 by a fixing pin 42, and the other end is connected to a balance plate 48 via guide rollers 44 and 46.
is fixed. The balance peg 48 is placed on a holder 50 fixed to the arm 24, and the tension of the other end of the detection wire 40 is adjusted by an adjustment bolt 52.
前記検出ワイヤ40の両側面に固定切刃60及び可動切
刃62が設(プられ、固定切刃60はアーム24に固定
され、また可動切刃62は保持台50の角穴50aに開
動自在に遊合支持され、保持台50にねじ結合されたス
トッパ64と可動切刃62の尾端との間には付勢ばね6
6が間挿され、可動切刃62にに固定切刃60へ向う付
勢力が与えられている。A fixed cutting blade 60 and a movable cutting blade 62 are provided on both sides of the detection wire 40, the fixed cutting blade 60 is fixed to the arm 24, and the movable cutting blade 62 can be opened and moved into the square hole 50a of the holding table 50. A biasing spring 6 is disposed between a stopper 64 which is loosely supported by the retainer 50 and screwed to the holding base 50 and the tail end of the movable cutting blade 62.
6 is inserted between the movable cutting blades 62 and a biasing force toward the fixed cutting blade 60 is applied to the movable cutting blades 62.
リミットスイッチ56から成る切断検出器はリミットス
イッチ56が検出ワイヤ40に接触する位置にてアーム
24に固定されている。リミットスイッチ56の出力は
検出回路58に供給され、検出回路58の検出信号が制
御回路36へ供給される。A disconnect detector consisting of a limit switch 56 is secured to the arm 24 at a location where the limit switch 56 contacts the detection wire 40. The output of the limit switch 56 is supplied to a detection circuit 58, and the detection signal of the detection circuit 58 is supplied to the control circuit 36.
本発明の実施例は以上の構成から成り、以下にその作用
を説明する。The embodiment of the present invention has the above configuration, and its operation will be explained below.
アーム24と被加工物支持部とが接触しない正常な放電
加工状態では、平衡&I48は保持台50上に載置され
、平衡鍾48が可動切刃62を第5図に示されるように
抑圧保持しているので、可動切刃62は付勢ばね66の
付勢力に抗して固定切刃60から離れた位置に保持され
、検出ワイヤ40か両切刃60.62に接触することは
ない。In a normal electric discharge machining state in which the arm 24 and the workpiece support are not in contact, the balance & I 48 is placed on the holding table 50, and the balance jaw 48 suppresses and holds the movable cutting blade 62 as shown in FIG. Therefore, the movable cutting blade 62 is held at a position apart from the fixed cutting blade 60 against the biasing force of the biasing spring 66, and the detection wire 40 does not come into contact with both cutting blades 60, 62.
また、検出ワイヤ40は調整ポル1〜52により調整さ
れた張力にて固定ピン42と平衡鍾48との間に張架さ
れてあり、この状態で、リミットスイッチ56は検出ワ
イヤ40と接触しているので、リミットスイッチ56は
オフ状態を保持している。Further, the detection wire 40 is stretched between the fixing pin 42 and the balance rod 48 with the tension adjusted by the adjustment poles 1 to 52, and in this state, the limit switch 56 is in contact with the detection wire 40. Therefore, the limit switch 56 maintains the off state.
被加工物支持部の配置あるいは送り形状が適当でない場
合、放電加工中にアーム24が被加工物支持部に接触す
る危険かあるが、本発明によれば、その接触直i行に検
出ワイヤ40が被加工物支持部に接触し、検出ワイヤ4
0に第4図のΔXで示される変位か生じ、平衡鍾48は
第5図に示されるようにΔh持持上られ、この結果、可
動切刃62は付勢ばね66の付勢力により固定切刃6Q
側へ突出し、両切刃60.62の噛合いにより検出ワイ
ヤ40が強制的に切断される。従って、1ノミツトスイ
ツチ56は検出ワイヤ40の切断を検出して検出回路5
8から制御装置36へ加工送り及び成型加工停止指令を
出力する。If the arrangement or feed shape of the workpiece support is not appropriate, there is a risk that the arm 24 will come into contact with the workpiece support during electrical discharge machining, but according to the present invention, the detection wire 40 comes into contact with the workpiece support, and the detection wire 4
0, a displacement shown by ΔX in FIG. 4 occurs, and the balance peg 48 is lifted by Δh as shown in FIG. Blade 6Q
The detection wire 40 is forcibly cut by the meshing of both cutting blades 60 and 62. Therefore, the one-knife switch 56 detects the disconnection of the detection wire 40 and the detection circuit 5
8 outputs processing feed and molding processing stop commands to the control device 36.
また、検出ワイヤ40の変位時、平衡鍾48を持ち上げ
る以前に検出ワイヤ4Qが切断すれば、可動切刃62に
よる強制的な切断が行われることはなく、検出ワイヤ4
0自体の切断が確実に切断検出器であるリミットスイッ
チ56により検出される。Furthermore, if the detection wire 4Q is cut before the balance peg 48 is lifted when the detection wire 40 is displaced, the movable cutting blade 62 will not be forced to cut the detection wire 4Q.
The disconnection of zero itself is reliably detected by the limit switch 56, which is a disconnection detector.
従って、本発明においては、接触時に検出ワイヤを強制
的に切断する装置と切断検出器を備えることにより、ワ
イヤの′+A貿あるいは断面積等の特性及び接触状態に
拘らず迅速かつ確実に接触事故を未然に検出することか
可能でおる。Therefore, in the present invention, by providing a device for forcibly cutting the detection wire at the time of contact and a cutting detector, it is possible to quickly and reliably prevent contact from occurring regardless of the wire's characteristics such as '+A' or cross-sectional area and the contact state. It is possible to detect this before it happens.
前述した実施例において、検出ワイヤは他の任意のロー
プとすることができ、また切断検出器のリミットスイッ
チは他の任意の電気的検出手段とすることが可能である
。実験によれば、検出ワイヤとしてQ、2mmの直径を
有する銅線または黄銅線を使用することにより良好な接
触検出作用を得ることができた。In the embodiments described above, the detection wire could be any other rope, and the cut detector limit switch could be any other electrical detection means. According to experiments, a good contact detection effect could be obtained by using a copper wire or brass wire with a diameter of Q, 2 mm as the detection wire.
[発明の効果]
以上説明したように、本発明によれば、アームと被加工
物支持部との接触を予め検出して加工不能あるいは装置
の破損を未然に防止することができる。[Effects of the Invention] As described above, according to the present invention, contact between the arm and the workpiece support portion can be detected in advance to prevent processing failure or damage to the device.
第1図は従来のワイヤカット放電加工装置の一例を示す
平面図、第2図は第1図の■−■断面図、第3図は第1
図の■−■断面図、第4図は本発明に係るワイヤカット
放電加工装置の好適な実施例を示す平面図、第5図は第
4図のv−■断面図である。
各図中向一部月には同一符号を付し、14は支持台、1
6は補助支持台、18は被加工物、20と22は電極ガ
イド、24はアーム、30はワイヤ電極、40は接触検
出ワイヤ、48は平衡鍾、56はリミットスイッチ、6
0は固定切刃、62は可動切刃である。
代理人 弁理士 大 岩 増 雄
(外 2名)Figure 1 is a plan view showing an example of a conventional wire-cut electrical discharge machining device, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and Figure 3 is a
FIG. 4 is a plan view showing a preferred embodiment of the wire-cut electric discharge machining apparatus according to the present invention, and FIG. 5 is a cross-sectional view taken along line v--■ in FIG. 4. The same reference numerals are given to the moons in each figure, 14 is a support stand, 1
6 is an auxiliary support base, 18 is a workpiece, 20 and 22 are electrode guides, 24 is an arm, 30 is a wire electrode, 40 is a contact detection wire, 48 is a balancer, 56 is a limit switch, 6
0 is a fixed cutting edge, and 62 is a movable cutting edge. Agent: Masuo Oiwa, patent attorney (2 others)
Claims (1)
イヤ電極が被加工物に対向配置され、下部電極ガイドは
アームにより被加工物の下方へ導かれワイヤ電極と被加
工物との間に相対送りが与えられているワイヤカット放
電加工装置において、一端が前記アームに固定され、他
端が平衡錘に固定され、かつアームに沿って張架配設さ
れた接触検出ワイヤと、接触検出ワイヤを挟むように配
置された切断装置と、接触検出ワイヤの切断を検出する
切断検出器と、送り加工及び放電加工を制御する制御装
置と、を備え、被加工物支持部とアームとの接触時に接
触検出ワイヤを切断し、これを検出する切断検出器によ
って、ワイヤ電極と被加工物との相対送り及び放電加工
を停止制御することを特徴とするワイヤカット放電加工
装置。(1) A wire electrode stretched so as to be runable by a pair of electrode guides is arranged opposite to the workpiece, and the lower electrode guide is guided below the workpiece by an arm between the wire electrode and the workpiece. In a wire-cut electric discharge machining device that is provided with relative feed, a contact detection wire having one end fixed to the arm, the other end fixed to a counterweight, and stretched along the arm, and a contact detection wire A cutting device arranged to sandwich the contact detection wire, a cutting detector that detects cutting of the contact detection wire, and a control device that controls feed machining and electric discharge machining, and when the workpiece support part and the arm come into contact, A wire-cut electrical discharge machining apparatus characterized in that a contact detection wire is cut and a cutting detector that detects the cutting is used to control relative feeding between a wire electrode and a workpiece and to stop electrical discharge machining.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2455986A JPS61182728A (en) | 1986-02-06 | 1986-02-06 | Wire electric discharge machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2455986A JPS61182728A (en) | 1986-02-06 | 1986-02-06 | Wire electric discharge machine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6233179A Division JPS55157432A (en) | 1979-05-21 | 1979-05-21 | Wire-cut spark erosion machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61182728A true JPS61182728A (en) | 1986-08-15 |
JPS635206B2 JPS635206B2 (en) | 1988-02-02 |
Family
ID=12141513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2455986A Granted JPS61182728A (en) | 1986-02-06 | 1986-02-06 | Wire electric discharge machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61182728A (en) |
-
1986
- 1986-02-06 JP JP2455986A patent/JPS61182728A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS635206B2 (en) | 1988-02-02 |
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