JPH02106223A - Method of electrolytic finishing work - Google Patents

Abstract

PURPOSE:To remove work chips adhered on a work surface and electrolytic products in a gap to the outside of the gap by supplying a first jet of an electrolyte almost simultaneously with pulse supply and supplying a second jet almost simultaneously with the vertical movement of an electrode after pulse off. CONSTITUTION:A first jet of an electrolyte is supplied to a gap 18 between an electrode 2 and a work 4 through the port 19 of the electrode 2 almost simultaneously with pulse supply to remove electrolytic products in the gap 18 formed during the pulse supply, and the electrode 2 is vertically moved after the pulse supply. A second jet of the electrolyte is supplied again through the port 9 of the electrode 2 almost simultaneously with the vertical movement, whereby the work chips adhered on the work surface 4a and the electrolytic products in the gap 18 can be certainly removed by the motion of the electrolyte accompanied with the vertical movement of the electrode 2, and the electrolyte in the gap 18 can be replaced with a pure electrolyte.

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は、電解仕上げ加工方法に係り、特に三次元形
状のワークの加工面を短時間かつ高精度に仕上げる電解
仕上げ加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrolytic finishing method, and more particularly to an electrolytic finishing method for finishing the machined surface of a three-dimensional workpiece in a short time and with high precision.

［従来の技術］ 従来の金属加工方法として知られている電解加工方法は
、例えば特開昭６２−２５５０１３号公報に開示されて
いる。この電解加工方法は、電極とワークとを所定間隙
で対設させ、電極とワーク間への直流電流の供給と、間
隙への電解液の噴出とを交互に繰り返してワークを加工
するものである。[Prior Art] An electrolytic processing method known as a conventional metal processing method is disclosed in, for example, Japanese Patent Laid-Open No. 62-255013. In this electrolytic processing method, an electrode and a workpiece are placed opposite each other with a predetermined gap, and the workpiece is processed by alternately supplying a direct current between the electrode and the workpiece and spouting an electrolytic solution into the gap. .

［発明が解決しようとする課題］ しかしながら、この電解加工方法にあっては、直流電流
の供給中は電解液の噴流を供給せず、直流電流供給後の
電極上昇時に電解液の噴流を供給して、間隙に生成した
電解生成物等を排除しているため、次のような不都合が
ある。即ち、例えば電極又はワークに電解液噴出用の孔
を設けて型彫放電加工する際、−船釣にワークの加工面
積は大きくなるが、このような場合、電極上昇時の電解
液の噴流だけでは、ワーク表面に付着した加工屑及び間
隙の電解生成物等を確実に排除しきれず、間隙の電解液
を清浄な電解液に入れ替えることが困難となる。したが
って、汚染された電解液が間隙に部分的に残存すること
になり、ワークの加工面の各部において加工条件に差異
が生じて、光沢面等の高精度な表面品質が得られないと
いう不都合がある。[Problems to be Solved by the Invention] However, in this electrolytic processing method, the jet of electrolyte is not supplied while the DC current is being supplied, but the jet of electrolyte is supplied when the electrode is raised after the DC current is supplied. Since the electrolytic products generated in the gaps are removed, there are the following disadvantages. That is, for example, when performing die-sinking electrical discharge machining by providing a hole for spouting electrolyte in an electrode or workpiece, the machining area of the workpiece becomes large, but in such a case, only the jet of electrolyte when the electrode rises In this case, machining debris adhering to the surface of the workpiece and electrolytic products in the gap cannot be completely removed, making it difficult to replace the electrolyte in the gap with a clean electrolyte. Therefore, the contaminated electrolyte partially remains in the gap, which causes differences in the processing conditions at each part of the workpiece surface, resulting in the inconvenience that high-precision surface quality such as a glossy surface cannot be obtained. be.

そこで、この発明の目的は、三次元形状のワークの加工
面の面粗度を向上させ得て、光沢面等の高精度な表面品
質を短時間に安定して得ることができる電解仕上げ加工
方法を実現するにある。Therefore, an object of the present invention is to provide an electrolytic finishing method that can improve the surface roughness of the machined surface of a three-dimensional workpiece and stably obtain high-precision surface quality such as a glossy surface in a short time. The aim is to realize this.

［課題を解決するための手段］ この目的を達成するために、この発明は、静止した電解
液中で電極とワークを所定の間隙で対向配置するステッ
プと、前記電極とワークとの極間にパルスを供給するス
テップと、このパルスが供給されている間、前記間隙に
電解液の第１の噴流を供給するステップと、前記パルス
がオフした後に電極を上下動させるステップと、この電
極が上下動する間、前記間隙に電解液の第２の噴流を供
給するステップとを具備することを特徴とする。[Means for Solving the Problems] In order to achieve this object, the present invention includes a step of arranging an electrode and a workpiece facing each other with a predetermined gap in a stationary electrolytic solution, and a step between the electrode and the workpiece. applying a pulse, applying a first jet of electrolyte into the gap while the pulse is being applied, and moving an electrode up and down after the pulse has turned off; supplying a second jet of electrolyte to the gap during the movement.

［作　用］ この発明の構成によれば、パルス供給と略同時に電解液
の第１の噴流を間隙に供給し、パルス供給中に生成され
る間隙の電解生成物を排除するとともに、パルス供給後
に、電極を上下動させるとともに、この上下動と略同時
に電解液の第２の噴流を再び供給するため、電極の上下
動に伴う電解液の動き等により、ワーク表面に付着した
加工屑及び間隙の電解生成物等を確実に排除し、間隙の
電解液を清浄な電解液に入れ替えることができる。[Function] According to the configuration of the present invention, the first jet of electrolyte is supplied to the gap substantially simultaneously with the pulse supply, and the electrolytic products generated in the gap during the pulse supply are eliminated, and the electrolyte is removed after the pulse supply. As the electrode is moved up and down, the second jet of electrolyte is again supplied almost simultaneously with this up and down movement, so the movement of the electrolyte accompanying the up and down movement of the electrode removes machining debris and gaps attached to the workpiece surface. It is possible to reliably remove electrolysis products and replace the electrolyte in the gap with a clean electrolyte.

［実施例］ 以下、図面を参照してこの発明の実施例を詳細かつ具体
的に説明する。[Embodiments] Hereinafter, embodiments of the present invention will be described in detail and specifically with reference to the drawings.

第１〜３図は、この発明の一実施例を示すものである。1 to 3 show an embodiment of this invention.

第１図において、この発明を実施し得る電解仕上げ加工
装置１は、電極２を固定する電極固定装置３、ワーク４
を固定するワーク固定装置５、サーボモータ６の回転運
動を往復運動に変換する駆動変換部７、パルス電流を発
生する電源装置８、モータ駆動制御部９と加工条件制御
部１０と電解液流制御部１１等からなる制御装置１２、
ワーク４に間する各種データ等を入力する入力装置１３
、電解液を濾過する電解液濾過装置１４、電解液を供給
する電解液供給装置１５、加工槽１６等からなる。In FIG. 1, an electrolytic finishing device 1 capable of carrying out the present invention includes an electrode fixing device 3 for fixing an electrode 2, a workpiece 4, and an electrode fixing device 3 for fixing an electrode 2.
A workpiece fixing device 5 that fixes the servo motor 6, a drive conversion section 7 that converts the rotational motion of the servo motor 6 into reciprocating motion, a power supply device 8 that generates a pulse current, a motor drive control section 9, a machining condition control section 10, and an electrolyte flow control section. A control device 12 consisting of a section 11 and the like;
Input device 13 for inputting various data etc. for the workpiece 4
, an electrolyte filtration device 14 for filtering the electrolyte, an electrolyte supply device 15 for supplying the electrolyte, a processing tank 16, and the like.

前記電極固定装置３は、その下部に設けたロッド１７の
下端に、例えば純銅もしくはグラファイトからなる電極
２を、その電極面２ａとワーク４の加工面４ａとが三次
元方向に−様な間隙１８を保つように固定する。この電
極固定装置３は、前記モータ駆動制御部９０制御信号に
よるサーボモータ６０回転により上下動し、電極面２ａ
と加工面４ａとを所定の間隙１８に設定する。また、電
極２及びロッド１７には間隙１８に電解液を供給するた
めの孔１９を設ける。The electrode fixing device 3 has an electrode 2 made of, for example, pure copper or graphite attached to the lower end of a rod 17 provided at the lower part of the device 3, with a gap 18 such that the electrode surface 2a and the processed surface 4a of the workpiece 4 are spaced in a three-dimensional direction. Fix it to keep it. This electrode fixing device 3 is moved up and down by 60 rotations of a servo motor based on a control signal from the motor drive control section 90, and the electrode surface 2a
and the processed surface 4a are set at a predetermined gap 18. Further, a hole 19 is provided in the electrode 2 and the rod 17 for supplying an electrolytic solution to the gap 18.

前記ワーク固定装置５は、絶縁性の高いグラナイトもし
くはセラミックス製のテーブルで、その上面には例えば
型彫放電加工されたワーク４を図示しないセット治具、
ネジ等により固定する。The workpiece fixing device 5 is a table made of highly insulating granite or ceramics, and on its upper surface, for example, a setting jig (not shown) is used to hold the workpiece 4 subjected to die-carving electric discharge machining.
Secure with screws, etc.

前記電極２とワーク４との極間に、所定のパルス電流を
供給する電源装置８と、この電源装置８を制御する前記
加工条件制御部ｉｏは、例えば第２図に示す如く構成す
る。A power supply device 8 that supplies a predetermined pulse current between the electrode 2 and the workpiece 4, and the processing condition control unit io that controls the power supply device 8 are configured as shown in FIG. 2, for example.

即ち、電源装置８は直流電源部２ｏと充放電部２１とで
構成され、直流電源部２０は、変圧器２２と整流器２３
とからなり、変圧器２２により電圧を所定値に降下させ
整流器２３により整流して直流電流を得て、後述する蓄
電器２４−１〜２４−ｎに供給する。That is, the power supply device 8 includes a DC power supply unit 2o and a charging/discharging unit 21, and the DC power supply unit 20 includes a transformer 22 and a rectifier 23.
The voltage is lowered to a predetermined value by a transformer 22 and rectified by a rectifier 23 to obtain a direct current, which is supplied to power storage units 24-1 to 24-n, which will be described later.

また、充放電部２１は、極間に電荷を放電する複数個の
蓄電器２４−１〜２４−ｎと、これらの各Ｔｆ電器２４
−■〜２４−ｎに接続し直流電源部２０側への電荷の逆
流を阻止するダイオード２５−１〜２５−ｎと、放電側
へ電荷を放電させるべく開閉される放電スイッチ２６−
１〜２６−ｎと、前記各蓄電器２４−１〜２４−ｎを所
定に充電すべく前記直流電源部２０からの電源を給断す
る充電スイッチ２７とからなる。The charging/discharging unit 21 also includes a plurality of capacitors 24-1 to 24-n that discharge charges between electrodes, and each of these Tf electrical appliances 24-n.
- Diodes 25-1 to 25-n connected to ■ to 24-n to prevent the backflow of charges to the DC power supply section 20 side, and a discharge switch 26- that is opened and closed to discharge charges to the discharge side.
1 to 26-n, and a charging switch 27 for supplying and disconnecting power from the DC power supply unit 20 in order to charge each of the capacitors 24-1 to 24-n to a predetermined value.

前記加工条件制御部１０は、蓄電器２４−１〜２４−ｎ
の充電電圧値を検出する電圧検出器２８と、この電圧検
出器２８で検出した充電電圧値とＤ／Ａ変換器２９から
の出力値とを比較する電圧比較器３０と、この電圧比較
器３０からの出力信号により前記蓄電器２４−１〜２４
−ｎの充電の完了及び開始を検出する充電検出器３１と
、極間に放電される電荷の電流値を検出する電流検出器
３２と、この電流検出器３２で検出した電流値のピーク
値をホールドするピークホールド回路３３と、このピー
クホールド回路３３でホールドしたピーク電流値とＤ／
Ａ変換器３４の出力値とを比較する電流比較器３５と、
所定時間幅のパルスを発生するパルス発生器３８と極間
に放電する電荷の電流波形を設定する電流波形設定器３
９からの入力信号により前記各放電スイッチ２６−１〜
２６−ｎに開閉１動信号を出力するゲート回路３６と、
前記各蓄電器２４−１〜２４−ｎへ供給する充電電圧値
を設定しその信号を前記Ｄ／Ａ変換器２９に出力する充
電電圧設定器３７と、極間に流れる電流値を設定しその
信号を前記Ｄ／Ａ変換器３４に出力する電流設定器４０
と、前記入力装置１３の入力データ等に基づき加工条件
等を演算・処理するＣＰＵ４１と、電極２とワーク４の
接触を検知する接触検知器４２等からなる。The processing condition control unit 10 controls the capacitors 24-1 to 24-n.
a voltage detector 28 that detects the charging voltage value of the voltage detector 28; a voltage comparator 30 that compares the charging voltage value detected by the voltage detector 28 with the output value from the D/A converter 29; The output signals from the capacitors 24-1 to 24
A charge detector 31 detects the completion and start of charging of -n, a current detector 32 detects the current value of the charge discharged between the electrodes, and a peak value of the current value detected by this current detector 32. The peak hold circuit 33 that holds the peak current value held by this peak hold circuit 33 and the D/
a current comparator 35 that compares the output value of the A converter 34;
A pulse generator 38 that generates a pulse with a predetermined time width and a current waveform setting device 3 that sets the current waveform of the charge discharged between the poles.
9, each of the discharge switches 26-1 to 26-1.
a gate circuit 36 that outputs an opening/closing signal to 26-n;
a charging voltage setting device 37 that sets a charging voltage value to be supplied to each of the capacitors 24-1 to 24-n and outputs the signal to the D/A converter 29; and a charging voltage setting device 37 that sets a current value flowing between the electrodes and outputs the signal a current setting device 40 that outputs the current to the D/A converter 34;
, a CPU 41 that calculates and processes machining conditions based on input data from the input device 13, and a contact detector 42 that detects contact between the electrode 2 and the workpiece 4.

なお、図中符号４３は逆起電力によって各放電スイッチ
２６−１〜２６−ｎが破壊するのを防止するダイオード
である。Note that the reference numeral 43 in the figure is a diode that prevents each of the discharge switches 26-1 to 26-n from being destroyed by back electromotive force.

前記入力装置１３は、加工面積Ｓ、仕上げ加工しろ等の
ワーク４に関する各種データ、及び加工条件等を人力す
る。また、前記電解液濾過装置１４は、例えば図示しな
い遠心分離器、液温調整器、フィルタ、電磁弁等を有し
、加工で生じた電解生成物を含む電解液を濾過し、また
、前記電解液供給装置１５は、ポンプ、電磁弁等を有し
、電解液濾過装置１４で濾過した清浄な電解液を、電解
液流制御部１１の制御信号により、前記孔１９から間隙
１８に供給する。The input device 13 inputs various data related to the workpiece 4 such as the machining area S and finishing machining margin, machining conditions, and the like. Further, the electrolyte filtration device 14 includes, for example, a centrifugal separator, a liquid temperature regulator, a filter, a solenoid valve, etc. (not shown), and filters the electrolyte containing electrolytic products generated during processing. The liquid supply device 15 has a pump, a solenoid valve, etc., and supplies the clean electrolyte filtered by the electrolyte filtration device 14 to the gap 18 from the hole 19 in response to a control signal from the electrolyte flow control section 11 .

次に、この電解仕上げ加工装置１による仕上げ加工動作
の一例について第３図のフローチャートに基づき説明す
る。Next, an example of the finishing operation by the electrolytic finishing apparatus 1 will be explained based on the flowchart of FIG. 3.

仕上げ加工に際しては、電極固定装置３のロッド１７の
下端に、例えばワーク４を型彫放電加工する際に使用し
た電極２を固定するとともに、ワーク固定装置５にワー
ク４をそれぞれ固定し、電解仕上げ加工装置ｌの電源を
投入（５０）　Ｌ／、電極２とワーク４の芯出しく５１
）を行う。During finishing, the electrode 2 used, for example, when performing die-sinking electrical discharge machining on the workpiece 4 is fixed to the lower end of the rod 17 of the electrode fixing device 3, and the workpiece 4 is fixed to the workpiece fixing device 5 for electrolytic finishing. Turn on the power to the processing device L (50) L/, center the electrode 2 and workpiece 4 51
)I do.

芯出し作業の終了後に加工が開始され、電極２が下降し
てワーク４に接触し、この接触を前記接触検知器４２が
検知すると、ＣＰ　Ｕ４１は、この位置を記憶する。そ
して、電極２を上昇させて、入力装置１３で入力した加
工間隙δを維持する位置（以下初期位置という）に電極
を設定（５３）　Ｌ／、電解液濾過装置１４及び電解液
供給装置１５を作動させて加工槽１６内に電解液を供給
（５４）する。Machining is started after the centering work is completed, and when the electrode 2 descends and contacts the workpiece 4 and the contact detector 42 detects this contact, the CPU 41 stores this position. Then, the electrode 2 is raised and set at a position (hereinafter referred to as the initial position) that maintains the machining gap δ inputted with the input device 13 (53) L/, the electrolyte filtration device 14 and the electrolyte supply device 15 are set. It is operated to supply electrolyte into the processing tank 16 (54).

加工槽１６内に電解液が供給され、間隙１８に電解液が
満ちたら、ロッド１７及び電極２に設けた孔１９から、
間隙１８に電解液の噴流（第１の噴流）を供給（５５）
するとともに、ワーク４の加工面積Ｓに応じた所定の面
粗度向上用の単一のパルス電流を供給（５６）する。そ
して、このパルス電流がオフし電解液の噴流供給が停止
したら、電極２を上昇（５７）させると略同時に電解液
の噴流（第２の噴流）を再び供給（５８）　シ、所定時
間経過して電極２を下降（５９）させ前記初期位置に再
設定（６０）する。When the electrolytic solution is supplied into the processing tank 16 and the gap 18 is filled with the electrolytic solution, from the hole 19 provided in the rod 17 and the electrode 2,
Supplying a jet of electrolyte (first jet) to the gap 18 (55)
At the same time, a single pulse current for improving the predetermined surface roughness according to the machining area S of the workpiece 4 is supplied (56). Then, when this pulse current is turned off and the supply of the electrolyte jet is stopped, the electrode 2 is raised (57) and the electrolyte jet (second jet) is supplied again (58). Then, the electrode 2 is lowered (59) and reset to the initial position (60).

ここで、この一連の動作を第４図のタイミングチャート
に基づき説明する。電解液の第１の噴流の供給が開始さ
れると、所定時間Ｔ２経過後にオン時間がＴＩのパルス
電流が供給され、このパルス電流がオフすると略同時に
第１の噴流の供給も停止される。そして、時間Ｔ４経過
後に、電極２の上昇が開始され、これと略同時に第２の
噴流の供給も開始される。この第２の噴流は電極２が時
間Ｔ５を経て初期位置に再設定されるまで供給される。Here, this series of operations will be explained based on the timing chart of FIG. When the supply of the first jet of electrolyte is started, a pulse current with an on time TI is supplied after a predetermined time T2 has elapsed, and when this pulse current is turned off, the supply of the first jet is also stopped almost at the same time. Then, after time T4 has elapsed, the electrode 2 starts to rise, and at about the same time, the supply of the second jet flow also starts. This second jet is supplied until the electrode 2 is reset to its initial position after a time T5.

なお、時間Ｔ６は次の加工サイクルまでの待ち時間であ
る。このように、間隙１８に第１の噴流と第２の噴流が
断続的に供給される。Note that time T6 is a waiting time until the next machining cycle. In this way, the first jet stream and the second jet stream are intermittently supplied to the gap 18.

前記ステップ（６０）で電極２が初期位置に再設定され
ると、面粗度向上用の加工回数が所定回数か否かを判断
（６１）　Ｌ／、この判断（６１）でＮｏの場合は、ス
テップ（５５）に戻り、ＹＥＳの場合は、制御装置１２
の制御信号により、電源装置８から供給されるパルス電
流を光沢面形成用の単一のパルス電流に切換え（６２）
る。そして、前記ステップ（５５〉〜（６０）と同様の
加工（６３）〜（６８）を所定回数繰り返しく６９）　
、光沢面を得て全ての加工を終了（７０）する。When the electrode 2 is reset to the initial position in step (60), it is determined whether or not the number of times of machining for improving surface roughness is a predetermined number of times (61) L/, if this determination (61) is No, then , returns to step (55), and if YES, the control device 12
Using the control signal, the pulse current supplied from the power supply device 8 is switched to a single pulse current for forming a glossy surface (62).
Ru. Then, processes (63) to (68) similar to steps (55> to (60)) are repeated a predetermined number of times 69)
, a glossy surface is obtained and all processing is completed (70).

第５図はこの発明の他の実施例を示すもので、上記実施
例と異なる点は、電極２及びロッド１７に設ける孔１９
の代りに、ワーク４に孔４４を設けるとともに、ワーク
４の下方にこの孔４４に連通ずる噴流ボックス４５を配
設した点にある。この構成によれば、電解液供給装置１
５からの清浄な電解液が、噴流ボックス４５及びワーク
４の孔４４を介して間隙１８に供給される。他の構成に
ついては上記実施例と同一であるためその説明を省略す
る。FIG. 5 shows another embodiment of the present invention, which differs from the above embodiment in that the electrode 2 and the hole 19 provided in the rod 17 are
Instead, a hole 44 is provided in the workpiece 4, and a jet box 45 communicating with the hole 44 is provided below the workpiece 4. According to this configuration, the electrolyte supply device 1
Clean electrolyte from 5 is supplied to the gap 18 via the jet box 45 and the hole 44 in the workpiece 4. Since the other configurations are the same as those of the above embodiment, the explanation thereof will be omitted.

このように、この発明に係る電解仕上げ加工方法にあっ
ては、極間へのパルス電流の供給と略同時に電極２もし
くはワーク４に設けた孔を介して間隙１８に電解液の第
１の噴流を供給し、パルス電流供給中に生成される電解
生成物を間隙１８外に排除するとともに、この第１の噴
流を一旦停止させ、電極２の上下動と略同期して第２の
噴流を供給し、この第２の噴流と電極２の上下動に伴う
電解液の動きとによって、ワーク表面に付着した加工屑
及び間隙１８の電解生成物を間隙１８外に排除する。し
たがって、凹窩状に形成された三次元形状ワークの間隙
の電解液も清浄な電解液に確実かつ容易に入れ替えるこ
とができる。As described above, in the electrolytic finishing method according to the present invention, the first jet of electrolyte is introduced into the gap 18 through the hole provided in the electrode 2 or the workpiece 4 at approximately the same time as the pulse current is supplied to the gap between the electrodes. is supplied, and the electrolytic products generated during pulse current supply are expelled from the gap 18, and this first jet flow is temporarily stopped, and a second jet flow is supplied approximately in synchronization with the vertical movement of the electrode 2. However, by this second jet flow and the movement of the electrolytic solution as the electrode 2 moves up and down, machining debris adhering to the workpiece surface and electrolytic products in the gap 18 are removed to the outside of the gap 18. Therefore, the electrolytic solution in the gap of the three-dimensional workpiece formed in the shape of a recess can be reliably and easily replaced with a clean electrolytic solution.

なお、上記実施例においては、電極２もしくはワーク４
に噴流供給用の孔１９．４４を設けた場合について説明
したが、例えば、間隙１８に指向する如く配設した噴出
ノズルによって電解液の噴流を供給する構成でも、加工
屑等の排除効果は向上する。In addition, in the above embodiment, the electrode 2 or the workpiece 4
Although a case has been described in which jet flow supply holes 19.44 are provided, for example, a configuration in which a jet flow of electrolytic solution is supplied by a jet nozzle arranged so as to be directed toward the gap 18 can also improve the effect of removing processing debris, etc. do.

しかしながら、実験によれば、上記各実施例のように電
極２に設けた孔１９から電解液の噴流を供給したり、噴
流ボックス４５を介してワークに設けた孔４４から、噴
流を供給する場合の方が、噴出ノズルを使用する場合に
比べ、仕上げ面粗度が向上するとともに、仕上げ面粗度
が同じでも加工取りしるが少ないことが確認されている
。However, according to experiments, when the jet of electrolyte is supplied from the hole 19 provided in the electrode 2 as in each of the above embodiments, or the jet is supplied from the hole 44 provided in the work via the jet box 45, It has been confirmed that compared to using a jet nozzle, the finished surface roughness is improved, and even if the finished surface roughness is the same, there is less machining.

また、上記実施例におけるパルスと噴流及び電極２の上
下動とのタイミングは、一実施例にすぎず、例えば、第
２の噴流の供給を電極２の上昇開始より早くしたり、第
１及び第２の噴流の供給停止をパルスのオフ及び電極２
の初期位置停止より遅くするなど、適宜に変更し得るも
のである。Further, the timing of the pulse, the jet flow, and the vertical movement of the electrode 2 in the above embodiment is just one example. Pulse off and electrode 2 to stop supplying the jet of 2.
This can be changed as appropriate, such as stopping at a later time than the initial position.

［発明の効果］ 以上詳細に説明したように、この発明の構成によれば、
パルス供給と略同時に第１の電解液の噴流を供給すると
ともに、パルスオフ後の電極の上下動と略同時に第２の
噴流を供給するようにしたので、第１の噴流によりパル
ス電流供給中に生成される電解生成物を間隙外に排除し
、また、第２の噴流と、電極２の上下動に伴う電解液の
動きとによって、ワーク表面に付着した加工屑及び間隙
の電解生成物を間隙外に排除することができ、間隙の電
解液を清浄な電解液に入れ替えることができるため、ワ
ークの加工面積全域に亘り加工条件を均一にし得て、光
沢面等の高精度な表面品質が短時間に得られ、省力化が
遅れている金型加工分野での品質向上と機械化を達成す
ることができる等の効果を奏する。[Effects of the Invention] As explained in detail above, according to the configuration of the present invention,
The first jet of electrolyte is supplied at approximately the same time as the pulse supply, and the second jet is supplied at approximately the same time as the electrode moves up and down after the pulse is turned off. Furthermore, the second jet and the movement of the electrolytic solution accompanying the vertical movement of the electrode 2 remove processing waste adhering to the workpiece surface and electrolytic products in the gap. Since the electrolyte in the gap can be replaced with a clean electrolyte, the machining conditions can be made uniform over the entire machining area of the workpiece, and high-precision surface quality such as a glossy surface can be achieved in a short time. This has the effect of making it possible to improve quality and mechanize the mold processing field, where labor saving is lagging behind.

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

第１図はこの発明の電解仕上げ加工装置のブロック図、
第２図は要部のブロック図、第３図は仕上げ加工動作の
一例を示すフローチャート、第４図はタイミングチャー
トの一実施例、第５図はこの発明の他の実施例を示す電
解仕上げ加工装置のブロック図である。 １・・・電解仕上げ加工装置、２・・・電極、４・・・
ワーク、　　８・・φ電源装置、９・・・モータ駆動制
御部、１０・・・加工条件制御部１１・・・電解液流制
御部、　１２・・・制御装置、１３・・・入力装置、　
１４・φ・電解液濾過装置、１５・・・電解液供給装置
、　１７・・・間隙、１９．４４ゆ・φ孔、　　　　　
３９・Φ・ＣＰＵ。 ４５・・・噴流ボックス。 特許出願人　　静岡製機株式会社 代表者鈴木重夫 第１図 第３図 第４ 図 第５図FIG. 1 is a block diagram of the electrolytic finishing apparatus of this invention.
Fig. 2 is a block diagram of the main parts, Fig. 3 is a flowchart showing an example of finishing operation, Fig. 4 is an example of a timing chart, and Fig. 5 is an electrolytic finishing process showing another embodiment of the present invention. FIG. 2 is a block diagram of the device. 1... Electrolytic finishing processing device, 2... Electrode, 4...
Workpiece, 8... φ power supply device, 9... Motor drive control unit, 10... Machining condition control unit 11... Electrolyte flow control unit, 12... Control device, 13... Input device,
14・φ・Electrolyte filtration device, 15・・Electrolyte solution supply device, 17・Gap, 19.44 mm・φ hole,
39・Φ・CPU. 45...jet box. Patent applicant Shizuoka Seiki Co., Ltd. Representative Shigeo Suzuki Figure 1 Figure 3 Figure 4 Figure 5

Claims (1)

【特許請求の範囲】[Claims] 静止した電解液中で電極とワークを所定の間隙で対向配
置するステップと、前記電極とワークとの極間にパルス
を供給するステップと、このパルスが供給されている間
、前記間隙に電解液の第１の噴流を供給するステップと
、前記パルスがオフした後に電極を上下動させるステッ
プと、この電極が上下動する間、前記間隙に電解液の第
２の噴流を供給するステップとを具備する電解仕上げ加
工方法。A step of arranging an electrode and a workpiece facing each other with a predetermined gap in a stationary electrolytic solution, a step of supplying a pulse between the electrode and the workpiece, and a step of supplying an electrolytic solution to the gap while the pulse is being supplied. moving the electrode up and down after the pulse is turned off; and supplying a second jet of electrolyte into the gap while the electrode moves up and down. Electrolytic finishing method.