JPH02106223A - Method of electrolytic finishing work - Google Patents
Method of electrolytic finishing workInfo
- Publication number
- JPH02106223A JPH02106223A JP25814988A JP25814988A JPH02106223A JP H02106223 A JPH02106223 A JP H02106223A JP 25814988 A JP25814988 A JP 25814988A JP 25814988 A JP25814988 A JP 25814988A JP H02106223 A JPH02106223 A JP H02106223A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- electrolyte
- gap
- jet
- workpiece
- 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
Links
- 238000000034 method Methods 0.000 title claims description 8
- 239000003792 electrolyte Substances 0.000 claims abstract description 48
- 239000008151 electrolyte solution Substances 0.000 claims description 13
- 238000003754 machining Methods 0.000 description 19
- 238000001914 filtration Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 238000003672 processing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000009760 electrical discharge machining Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- 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]
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.
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)
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25814988A JPH02106223A (en) | 1988-10-13 | 1988-10-13 | Method of electrolytic finishing work |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25814988A JPH02106223A (en) | 1988-10-13 | 1988-10-13 | Method of electrolytic finishing work |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02106223A true JPH02106223A (en) | 1990-04-18 |
Family
ID=17316205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25814988A Pending JPH02106223A (en) | 1988-10-13 | 1988-10-13 | Method of electrolytic finishing work |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02106223A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS505139A (en) * | 1973-05-17 | 1975-01-20 | ||
JPS63196321A (en) * | 1987-02-09 | 1988-08-15 | Shizuoka Seiki Co Ltd | Finishing method by electro-chemical machining and device therefore |
-
1988
- 1988-10-13 JP JP25814988A patent/JPH02106223A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS505139A (en) * | 1973-05-17 | 1975-01-20 | ||
JPS63196321A (en) * | 1987-02-09 | 1988-08-15 | Shizuoka Seiki Co Ltd | Finishing method by electro-chemical machining and device therefore |
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