JPH01115516A - Electrochemical machine - Google Patents
Electrochemical machineInfo
- Publication number
- JPH01115516A JPH01115516A JP62272843A JP27284387A JPH01115516A JP H01115516 A JPH01115516 A JP H01115516A JP 62272843 A JP62272843 A JP 62272843A JP 27284387 A JP27284387 A JP 27284387A JP H01115516 A JPH01115516 A JP H01115516A
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- electrode
- electrolytic solution
- electrolytic
- gap
- 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
- 239000003792 electrolyte Substances 0.000 claims abstract description 67
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000008151 electrolyte solution Substances 0.000 claims description 60
- 239000007788 liquid Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 5
- 238000003754 machining Methods 0.000 description 20
- 239000003990 capacitor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000009760 electrical discharge machining Methods 0.000 description 2
- 238000007730 finishing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate 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】
[産業上の利用分野コ
この発明は、電解加工装置に係り、特に被加工物の三次
元形状の被加工面を短時間かつ高精度に仕上げて鏡面状
の光沢面を得ることができる電解加工装置に関する。[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an electrolytic processing device, and in particular, it can finish a three-dimensionally shaped work surface of a workpiece in a short time and with high precision to a mirror-like glossy surface. The present invention relates to an electrolytic processing apparatus that can obtain the following.
[従来の技術]
従来の金属加工装置としては、被加工物と電極との間隙
に硝酸ナトリウムや塩化ナトリウム等の電解液を満たし
、この電解液を高速で流すとともに、安定した電解作用
を阻害する電解生成物、すなわち溶出した金属化合物や
金属イオン及び水素ガス等を除去しながら、直流電流を
被加工物から電極に流して加工する。電解加工装置(特
開昭61−71921号公報及び特開昭60−4422
8号公報参照)が知られている。[Conventional technology] Conventional metal processing equipment fills the gap between the workpiece and the electrode with an electrolytic solution such as sodium nitrate or sodium chloride, flows this electrolytic solution at high speed, and inhibits stable electrolytic action. Processing is performed by passing a direct current from the workpiece to the electrode while removing electrolysis products, that is, eluted metal compounds, metal ions, hydrogen gas, etc. Electrolytic processing equipment (JP-A-61-71921 and JP-A-60-4422)
(see Publication No. 8) is known.
[発明が解決しようとする問題点コ
しかしながら、この電解加工9にあっては、特に三次元
形状の底付き加工(凹窩状に形成された三次元構造のも
のに対する加工をいう)において、被加工物に電極の精
密な転写を行うことが困難で、高精度の表面品質が得ら
れないという不都合があった。そこで、本出願人はこの
不都合を除去する電解加工装置として、特願昭62−2
7616号を出願したが、この電解加工装置にあっては
、被加工物と7TL極との間隙に生成した電解生成物を
排除するために、加工槽の下方に設けた電解液濾過装置
のクリーンタンクからポンプによって電解液を汲み上げ
、この電解液を前記間隙に指向する如く配設した噴射ノ
ズルから噴出して除去していた。[Problems to be Solved by the Invention] However, in this electrolytic machining 9, there is a problem in the process of bottoming a three-dimensional shape (machining of a three-dimensional structure formed in the shape of a concave hole). This method has the disadvantage that it is difficult to accurately transfer the electrode to the workpiece, and high-precision surface quality cannot be obtained. Therefore, the present applicant proposed a patent application filed in 1986-2 as an electrolytic processing device to eliminate this inconvenience.
No. 7616 was filed, but in this electrolytic processing equipment, in order to eliminate electrolytic products generated in the gap between the workpiece and the 7TL pole, an electrolytic solution filtration device installed below the processing tank is cleaned. The electrolytic solution was pumped up from the tank by a pump, and removed by being ejected from an injection nozzle arranged so as to be directed toward the gap.
したがって、このような噴射ノズルのみによる噴出では
、被加工面が複雑な形状の場合に、噴射ノズルの反対側
の被加工面まで均一に電解液を噴出させることが困難で
あり、被加工面に電解生成物が除去された部分と除去さ
れない部分とが発生し、これにより、被加工面に加工条
件の差異が生じて縞模様が発生するなど、その表面品質
を著しく損なうという不都合があった。Therefore, when the workpiece surface has a complicated shape, it is difficult to jet the electrolyte uniformly to the workpiece surface on the opposite side of the jet nozzle, and the workpiece surface may be There are areas where the electrolytic products are removed and areas where they are not, and this causes a difference in processing conditions on the processed surface, resulting in striped patterns and other disadvantages that significantly impair the surface quality.
[発明の目的]
そこでこの発明は、上記不都合を除去し、特に電極に設
けた孔から極間の電解液を吸引排除するとともに、該極
間に噴出した電解液が静止した後にパルス電流を供給す
ることにより、被加工物の三次元形状の被加工面を短時
間かつ高精度に仕上げて鏡面状の光沢面を得ることかで
きる電解加工装置を実現するにある。[Objective of the Invention] Therefore, the present invention eliminates the above-mentioned disadvantages, and in particular, sucks and removes the electrolytic solution between the electrodes from holes provided in the electrodes, and supplies a pulse current after the electrolytic solution spouted between the electrodes comes to rest. By doing so, it is possible to realize an electrolytic machining apparatus that can finish a three-dimensionally shaped work surface of a workpiece in a short time and with high precision to obtain a mirror-like glossy surface.
[問題点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、加工槽内で電解
液を介して対設した被加工物と電極間にパルス電流を供
給するとともに、前記被加工物と電極との間隙に生成し
た電解生成物を除去しながら被加工物を仕上げ加工する
電解加工装置において、一端が前記間隙に開口する如く
前記電極に配設した孔から前記電解生成物を含む電解液
を吸引、回収して濾過する電解液濾過装置と、該電解液
濾過装置で濾過した電解液を前記間隙に間欠的に噴出す
る電解液供給装置と、該電解液供給装置によって前記間
隙に噴出した電解液が静止した場合に前記被加工物と電
極間にパルス電流を供給する電源装置とを備えたことを
特徴とする。[Means for Solving the Problems] To achieve this object, the present invention supplies a pulse current between a workpiece and an electrode that are disposed opposite to each other via an electrolyte in a processing tank, and In an electrolytic processing apparatus that finishes processing a workpiece while removing electrolytic products generated in a gap between the object and an electrode, the electrolytic products are contained through a hole provided in the electrode such that one end opens into the gap. an electrolyte filtration device that sucks, collects and filters an electrolyte; an electrolyte supply device that intermittently spouts the electrolyte filtered by the electrolyte filtration device into the gap; The present invention is characterized by comprising a power supply device that supplies a pulse current between the workpiece and the electrodes when the spouted electrolyte comes to rest.
[作 用コ
この発明の構成によれば、電極に設けた孔から電解液濾
過装置によって極間に生成した電解生成物を含む電解液
を吸引回収して濾過するとともに、この濾過した電解液
を電解液供給装置によって間欠的に被加工物と電極との
間隙に噴出する。そして、噴出した電解液が静止した状
態で電源装置からパルス電流を供給するため、前記間隙
に生成した電解生成物を確実に除去するとともに、電解
液の流れによる影響を受けないなど、被加工面全域に亘
って加工条件を均一にし得る。[Function] According to the configuration of the present invention, the electrolytic solution containing electrolytic products generated between the electrodes is collected by suction and filtered by the electrolytic solution filtration device through the holes provided in the electrode, and the filtered electrolytic solution is also filtered. The electrolyte is intermittently sprayed into the gap between the workpiece and the electrode by the electrolyte supply device. Since pulse current is supplied from the power supply while the ejected electrolyte remains stationary, electrolytic products generated in the gap are reliably removed, and the workpiece surface is not affected by the flow of the electrolyte. Processing conditions can be made uniform over the entire area.
[実施例コ
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1〜5図は、この発明の一実施例を示す。第1〜3図
において、1はこの発明に係る電解加工装置で、この電
解加工装置1は、被加工物2を固定する被加工物固定装
置3、電極4を固定する電極固定装置5、電極駆動部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と電解液制御部11とからなる制御装置
12、被加工物2に関するデータ等を人力する入力装置
13、電解液濾過装置14、電解液供給装置15、加工
槽16等からなる。1 to 5 show an embodiment of the present invention. 1 to 3, reference numeral 1 denotes an electrolytic processing apparatus according to the present invention, and this electrolytic processing apparatus 1 includes a workpiece fixing device 3 for fixing a workpiece 2, an electrode fixing device 5 for fixing an electrode 4, and an electrode fixing device 5 for fixing an electrode 4. Drive part 6
A control device 12 consisting of a drive conversion section 7 that converts the rotational motion of the object into a reciprocating motion, a power supply device 8 that generates a pulse current, a motor drive control section 9, a processing condition control section 10, and an electrolyte control section 11, a workpiece 2, an electrolytic solution filtering device 14, an electrolytic solution supplying device 15, a processing tank 16, and the like.
前記被加工物固定装置3は、絶縁性の高いグラナイトも
しくはセラミックスからなるテーブルで、例えば放電加
工によって加工した被加工物2をボルト17等により固
定する。また、前記電極固定装置5は、その下部に設け
たロッド18の下端に、−端が被加工物2と電極4どの
間隙19に開口し、他端が前記ロッド18の孔65に連
通ずる孔46を有する、例えば純銅からなり前記放電加
工時に使用した電極4を、その電極面4aと前記被加工
物2の被加工面2aとが三次元方向に−様な間隙19を
保つように固定する。そして、前記電極固定装置5は、
前記電極駆動部6と駆動変換部7とにより前記間隙19
を所定値に維持すべく上下動する。すなわち、電極駆動
部6のロータリーエンコーダ20とタコジェネレータ2
1からの信号により前記制御装置12のモータ駆動制御
部9から出力される制御信号により、モータ22を回転
制御し、このモータ22の回転運動を駆動変換部7によ
り往復運動に変換して、前記電極固定装置5を上下動さ
せ、電極面4aと被加工面2aとを所定の間隙19に制
御する。なお、前記電極4の孔46は、被加工物2の被
加工面2aに鏡面状の光沢面を必要としない部分の対向
箇所に設けられる。The workpiece fixing device 3 is a table made of highly insulating granite or ceramics, and fixes the workpiece 2 machined, for example, by electrical discharge machining, with bolts 17 or the like. Further, the electrode fixing device 5 has a hole at the lower end of the rod 18 provided at the lower part thereof, the negative end opens into the gap 19 between the workpiece 2 and the electrode 4, and the other end communicates with the hole 65 of the rod 18. 46, for example made of pure copper and used during the electrical discharge machining, is fixed so that the electrode surface 4a and the machined surface 2a of the workpiece 2 maintain a --like gap 19 in the three-dimensional direction. . The electrode fixing device 5 is
The gap 19 is formed by the electrode driving section 6 and the drive conversion section 7.
moves up and down to maintain it at a predetermined value. That is, the rotary encoder 20 of the electrode drive unit 6 and the tacho generator 2
The rotation of the motor 22 is controlled by a control signal output from the motor drive control section 9 of the control device 12 based on the signal from the control device 1, and the rotational motion of the motor 22 is converted into a reciprocating motion by the drive conversion section 7. The electrode fixing device 5 is moved up and down to maintain a predetermined gap 19 between the electrode surface 4a and the surface to be processed 2a. Note that the hole 46 of the electrode 4 is provided at a location opposite to a portion of the workpiece surface 2a of the workpiece 2 that does not require a mirror-like glossy surface.
前記被加工物2と電極4間に電流密度(単位面積当りの
平均電流)が70A/Cm2以下のパルスを供給する電
源装置8は、加工条件制御部10からの制御信号により
、被加工物2の表面積に従って計算した所定の電流密度
のパルスを発生ずるもので、直流電源部23と充放電部
24と充放電制御部25とを有し、例えば第4図に示す
如く構成する。The power supply device 8 supplies a pulse with a current density (average current per unit area) of 70 A/Cm2 or less between the workpiece 2 and the electrode 4, and the power supply device 8 supplies a pulse with a current density (average current per unit area) of 70 A/Cm2 or less between the workpiece 2 and the electrode 4. The device generates pulses with a predetermined current density calculated according to the surface area of , and has a DC power source section 23, a charge/discharge section 24, and a charge/discharge control section 25, and is configured as shown in FIG. 4, for example.
第4図において、直流電源部23は、変圧器26と整流
器27とからなり、変圧器26により電圧を所定値に降
下させ整流器27により整流して直流電流を得て、後述
する蓄電器28−1〜28−nに供給する。In FIG. 4, the DC power supply unit 23 includes a transformer 26 and a rectifier 27. The voltage is lowered to a predetermined value by the transformer 26 and rectified by the rectifier 27 to obtain a DC current. ~28-n.
また、充放電部24は、被加工物2と電極4との間隙1
9に電荷を放電する複数個の蓄電器28−1〜28−〇
と、これらの各蓄電器28−1〜28−nに接続し、直
流電源部23側への電荷の逆流を阻止するダイオード2
9−1〜29−nと、放電側への電荷を放電させるべく
開閉される放電スイッチ30−1〜30−nと、前記各
蓄電器28−1〜28−nを所定に充電すべく前記直流
電源部23からの電源を給断する充電スイッチ31とか
らなる。In addition, the charging/discharging section 24 has a gap 1 between the workpiece 2 and the electrode 4.
9, a plurality of capacitors 28-1 to 28-0, and a diode 2 connected to each of these capacitors 28-1 to 28-n to prevent backflow of charges to the DC power supply section 23 side.
9-1 to 29-n, discharge switches 30-1 to 30-n that are opened and closed to discharge charges to the discharge side, and the direct current to charge each of the capacitors 28-1 to 28-n to a predetermined value. It consists of a charging switch 31 that supplies and disconnects power from the power supply unit 23.
この充放電部24を制御する充放電制御部25は、蓄電
器28−1〜28−nへ供給する充電電圧値を検出する
電圧検出器32と、前記加工条件制御部10の充電電圧
設定部37て設定した設定充電電圧値と前記電圧検出器
32て検出した検出充電電圧値とを比較する電圧比較器
33と、前記被加工物2と電極4との間隙19に放電さ
れる電荷の電流値を検出する電流検出器34と、前記加
工条件制御部10の最小電流設定部40で設定した最小
電流値と前記電流検出器34て検出した放電電流値とを
比較する電流比較器35と、前記加工条件制御部IOの
パルス発生部38と電流波形設定部39と前記電流比較
器35とからの入力により前記検出電流値が前記最小電
流値以上の場合には、前記各蓄電器28−1〜28−n
の電荷を放電側に所望に放電させるとともに、前記検出
電流値が前記最小電流値未満の場合には、前記各蓄電器
28−1〜28−nの電荷の放電を停止させるべく前記
各放電スイッチ30−1〜30−nに開閉駆動信号を出
力するゲート回路36とを有している。A charging/discharging control section 25 that controls the charging/discharging section 24 includes a voltage detector 32 that detects charging voltage values supplied to the capacitors 28-1 to 28-n, and a charging voltage setting section 37 of the processing condition control section 10. a voltage comparator 33 that compares the set charging voltage value set by the voltage detector 32 with the detected charging voltage value detected by the voltage detector 32; and a current value of the charge discharged into the gap 19 between the workpiece 2 and the electrode 4. a current detector 34 for detecting the current value, a current comparator 35 for comparing the minimum current value set by the minimum current setting unit 40 of the machining condition control unit 10 and the discharge current value detected by the current detector 34; If the detected current value is equal to or greater than the minimum current value based on the inputs from the pulse generator 38, current waveform setting unit 39, and current comparator 35 of the processing condition control unit IO, each of the capacitors 28-1 to 28 -n
The respective discharge switches 30 are configured to discharge the electric charge to the discharge side as desired, and to stop discharging the electric charge of each of the capacitors 28-1 to 28-n when the detected current value is less than the minimum current value. -1 to 30-n, and a gate circuit 36 that outputs an opening/closing drive signal.
また、この充放電制御部25を制御する制御装置12の
加工条件制御部IOは、充電電圧設定部37と、パルス
発生部38と、電流波形設定部39と、最小電流設定部
40と、前記人力装置13の入力データに基づき加工条
件等を演算・処理するC P 041等からなる。なお
、第4図中符号42は放電スイッチ30−1〜30−n
の開時に逆起電力により各放電スイッチ30−1〜30
−nが破壊するのを防止するダイオードである。Further, the machining condition control section IO of the control device 12 that controls the charge/discharge control section 25 includes a charging voltage setting section 37, a pulse generation section 38, a current waveform setting section 39, a minimum current setting section 40, and the above-mentioned. It consists of a C P 041 and the like that calculates and processes machining conditions and the like based on the input data of the human-powered device 13. Note that the reference numeral 42 in FIG. 4 indicates the discharge switches 30-1 to 30-n.
When the discharge switches 30-1 to 30 are opened, each discharge switch 30-1 to 30 is
- This is a diode that prevents n from being destroyed.
前記人力装置13は、被加工物2の材質と表面積、仕上
げ加工しろと寸法精度の等級、仕上げ面粗度及び加工電
極間隙等を人力し、これらの各信号を制御装置12のモ
ータ駆動制御部9及び°加工条件制御部IOに出力する
。The human power device 13 manually inputs the material and surface area of the workpiece 2, the finishing margin, the grade of dimensional accuracy, the finished surface roughness, the machining electrode gap, etc., and sends these signals to the motor drive control section of the control device 12. 9 and ° are output to the machining condition control unit IO.
前記電解液濾過装置14と電解液供給装置15は、電解
液制御部11からの制御信号に基づいて、加工で生じた
電解生成物を含む電解液を電解液濾過装置14て前記電
極4に設けた孔4Gから吸引回収して濾過するとともに
、この濾過した新鮮な電解液を電解液供給装置15によ
り、前記間隙19に指向する如く配設した噴出ノズル6
4から一定の液圧て噴出するものであり、例えば第5図
に示す如く構成する。The electrolyte filtration device 14 and the electrolyte supply device 15 provide the electrode 4 with an electrolyte containing electrolytic products generated during processing based on a control signal from the electrolyte control unit 11. The filtered fresh electrolyte is collected by suction through the hole 4G and filtered, and the filtered fresh electrolyte is sent to the spout nozzle 6 arranged so as to be directed toward the gap 19 by the electrolyte supply device 15.
The liquid is ejected at a constant pressure from 4, and is constructed as shown in FIG. 5, for example.
第5図において、電解液濾過装置14は、電解生成物を
多く含んだ電解液45を貯留するダーティタンク48と
、このダーティタンク48の電解液45を電磁ポンプ4
9で汲み上げ、フィルタ50を通してからモータ51の
回転により遠心分離処理する遠心分離機52と、この遠
心分離機52で分前処理した電解生成物を含まない電解
液44を貯留するクリーンタンク53と、前記ダーティ
タンク48の液面を検出する上限フロートスイッチ54
及び下限フロートスイッチ55とを有している。In FIG. 5, the electrolytic solution filtration device 14 includes a dirty tank 48 that stores an electrolytic solution 45 containing a large amount of electrolytic products, and an electromagnetic pump 4 that collects the electrolytic solution 45 in the dirty tank 48.
a centrifugal separator 52 that pumps up the electrolytic solution 44 at step 9, passes it through a filter 50, and performs centrifugal separation by rotation of a motor 51; Upper limit float switch 54 for detecting the liquid level of the dirty tank 48
and a lower limit float switch 55.
また、前記電解液濾過装置14は、逆止弁589.59
を介してそれぞれ前記ロッド18の孔65とダーティタ
ンク48とに連結した第1のシリンダ56と、この第1
のシリンダ56に直列に連結した第2のシリンダ57と
、この第2のシリンダ57に電磁弁60を介して連結し
たコンプレッサ61とを有している。なお、47は電解
液430オーバーフロー用の排出管である。Further, the electrolyte filtration device 14 includes a check valve 589.59.
a first cylinder 56 connected to the hole 65 of the rod 18 and the dirty tank 48, respectively, via a first cylinder 56;
The compressor 61 has a second cylinder 57 connected in series to the cylinder 56 and a compressor 61 connected to the second cylinder 57 via a solenoid valve 60. Note that 47 is a discharge pipe for overflowing the electrolytic solution 430.
前記電解液供給装置15は、クリーンタンク53の電解
液44を汲み上げる電磁ポンプ62と、この電磁ポンプ
62と前記噴出ノズル64間に接続した電磁弁63とか
らなる。The electrolyte supply device 15 includes an electromagnetic pump 62 that pumps up the electrolyte 44 in the clean tank 53, and an electromagnetic valve 63 connected between the electromagnetic pump 62 and the jet nozzle 64.
そして、この電解液濾過装置14及び電解液供給装置1
5を制御する電解液制御部11は、加工条件制御部10
からの制御信号に基づいて、コンプレッサ61を作動さ
せて第1及び第2のシリンダ56.57を作動さぜ、間
隙19の電解生成物を含む電解液43を孔46及び65
から吸引してダーティタンク48へ回収するとともに、
この回収した電解液45を前記電磁ポンプ49、モータ
51等を作動させて濾過し、そして、この濾過した電解
液44を電磁ポンプ62を作動させて噴出ノズル64か
ら間隙19に噴出する如く制御する。The electrolyte filtration device 14 and the electrolyte supply device 1
The electrolyte control unit 11 that controls the processing condition control unit 10
The compressor 61 is actuated to actuate the first and second cylinders 56,57 to transfer the electrolytic solution 43 containing the electrolytic products in the gap 19 to the holes 46 and 65.
At the same time as suctioning from the tank and collecting it in the dirty tank 48,
The collected electrolytic solution 45 is filtered by operating the electromagnetic pump 49, motor 51, etc., and the filtered electrolytic solution 44 is controlled to be ejected from the ejection nozzle 64 into the gap 19 by operating the electromagnetic pump 62. .
次に、この電解加工装置の動作を仕上げ加工方法に基づ
いて説明する。Next, the operation of this electrolytic processing apparatus will be explained based on the finishing method.
仕上げ加工に際しては、被加工物固定装置3に例えば放
電加工によって所望形状に加工した被加工物2を固定す
るとともに、電極固定装置5のロッド18の下端に前記
放電加工時に使用した電極4を固定し、この電極4を下
降してその電極面4aを、被加工物2の被加工面2aに
対向接触させ、電極4を被加工物2とともに加工槽16
の電解液43内に浸漬する。そしてこの位置を原点Aと
し、入力装置13によって人力され前記CP U41に
設定された所定の間隙19を保つ位置に電極4を上昇し
、電解液43が被加工面2aと電極面4aとの間隙19
に満ち、電解液43が静止(電解液43の流れ・動きが
略停止した状態をいう)したら仕上げ加工を開始する。During finishing, the workpiece 2 machined into a desired shape by electric discharge machining, for example, is fixed to the workpiece fixing device 3, and the electrode 4 used during the electric discharge machining is fixed to the lower end of the rod 18 of the electrode fixing device 5. Then, the electrode 4 is lowered to bring its electrode surface 4a into opposing contact with the surface 2a to be processed of the workpiece 2, and the electrode 4 is placed together with the workpiece 2 in the processing tank 16.
It is immersed in the electrolyte solution 43 of. Then, using this position as the origin A, the electrode 4 is manually raised using the input device 13 to a position where a predetermined gap 19 set in the CPU 41 is maintained, and the electrolytic solution 43 closes the gap between the workpiece surface 2a and the electrode surface 4a. 19
When the electrolytic solution 43 becomes stationary (meaning a state in which the flow and movement of the electrolytic solution 43 has substantially stopped), finishing processing is started.
仕上げ加工の前期には、加工条件制御部100制御信号
により、電源装置8から例えばパルス電流のオン時間が
5m5ec以下で低電流密度の面粗度向上用のパルス電
流を被加工物2と電極4間に供給する。これにより、被
加工面2a素材が溶出する。所定のパルス電流を1回な
いし数回供給した後、所定の間隙19を維持させた状態
で該間隙19の電解生成物を含んだ電解液45を、電解
液濾過装置14のシリンダ56.57等の作動により、
前記孔46及び65から吸引してダーティタンク48に
回収するとともに、この吸引動作と略連動して前記電解
液供給装置15が作動し、電解液44を噴出ノズル64
から前記間隙19に向けて噴出する。In the first half of finishing, a control signal from the machining condition control unit 100 is used to apply a pulse current to the workpiece 2 and the electrode 4 from the power supply 8 with a pulse current on time of 5 m5ec or less and a low current density to improve the surface roughness. supply in between. As a result, the material of the processed surface 2a is eluted. After supplying a predetermined pulse current once or several times, while maintaining a predetermined gap 19, the electrolyte 45 containing the electrolytic products in the gap 19 is transferred to the cylinders 56, 57, etc. of the electrolyte filtration device 14. Due to the operation of
The electrolyte 44 is sucked through the holes 46 and 65 and collected into the dirty tank 48 , and the electrolyte supply device 15 is operated in substantially conjunction with this suction operation to send the electrolyte 44 to the jet nozzle 64 .
The liquid is ejected from the gap 19 toward the gap 19.
電解液44を噴出した後は、電極4が下降し、電極面4
aが被加工面2aに接触する。これにより、前記原点A
と現位置とを制御装置12て比較して加工1回(1パル
スまたは数パルス毎の加工)当りの加工深さを測定する
。その後、前記被加工面2aと電極面4aが所定の間隙
19を保つように電極4が再び上昇し、電解液43が被
加工面2aと電極面4a間に満ち、電解液43が静止し
たらパルスを供給して次の加工を行う。After spouting the electrolyte 44, the electrode 4 descends and the electrode surface 4
a contacts the processed surface 2a. As a result, the origin A
and the current position are compared using the control device 12 to measure the machining depth per machining process (machining every one pulse or several pulses). After that, the electrode 4 rises again so that the predetermined gap 19 is maintained between the surface to be processed 2a and the electrode surface 4a, the electrolytic solution 43 is filled between the surface to be processed 2a and the electrode surface 4a, and when the electrolytic solution 43 is stationary, a pulse is generated. is supplied for the next processing.
ここで、電解液濾過装置14及び電解液供給装置15の
動作について説明する。Here, the operations of the electrolytic solution filtering device 14 and the electrolytic solution supplying device 15 will be explained.
所定回数の加工が終了すると、電解液制御部11がコン
プレッサ61に信号を出力し、シリンダ57にエアーを
供給してピストン57aを図中ア方向に移動させる。こ
れにより、ピストン57aと直列に連結されたシリンダ
56のピストン56aが同じくア方向に移動し、この移
動により、前記孔46及び65を介して間隙19の電解
液45が汲み上げられ、シリンダ56の室A内に所定量
貯留される。そして所定量の電解液45が室A内に貯留
されると、電解液制御部11がコンプレッサ61に信号
を出力し、電磁弁60を作動させてシリンダ57内のエ
アーを排出する。When a predetermined number of machining operations are completed, the electrolytic solution control unit 11 outputs a signal to the compressor 61 to supply air to the cylinder 57 and move the piston 57a in the direction A in the figure. As a result, the piston 56a of the cylinder 56 connected in series with the piston 57a similarly moves in the A direction, and as a result of this movement, the electrolytic solution 45 in the gap 19 is pumped up through the holes 46 and 65, and the A predetermined amount is stored in A. When a predetermined amount of the electrolytic solution 45 is stored in the chamber A, the electrolytic solution control section 11 outputs a signal to the compressor 61 to operate the solenoid valve 60 to discharge the air in the cylinder 57.
これにより、ピストン57aがイ方向に移動するととも
に、シリンダ56のピストン56aもイ方向に移動して
室A内の電解液45を逆止弁59を介してダーティタン
ク48に排出する。なお、電解液45は逆止弁58.5
9により所定方向以外への流入が阻止される。As a result, the piston 57a moves in the A direction, and the piston 56a of the cylinder 56 also moves in the A direction to discharge the electrolytic solution 45 in the chamber A into the dirty tank 48 via the check valve 59. Note that the electrolyte 45 is connected to a check valve 58.5.
9 prevents the water from flowing in directions other than the predetermined direction.
間隙19の電解生成物を含んだ電解液45が孔46、孔
65、逆止弁58、シリンダ56の室A、逆止弁59を
介してダーティタンク48に貯留されると、その液面レ
ベルが、上・下のフロートスイッチ54.55で検出さ
れて電解液制御部11に入力される。電解液制御部11
は、ダーティタンク48内の液面レベルが所定値に達し
たら、即ち液面レベルが上・下のフロートスイッチ54
.55開にある時、電磁ポンプ49に駆動信号を出力し
、ダーティタンク48内の電解液45を汲み上げ、フィ
ルタ50を通して遠心分離機52に送出する。When the electrolytic solution 45 containing the electrolytic products in the gap 19 is stored in the dirty tank 48 via the hole 46, the hole 65, the check valve 58, the chamber A of the cylinder 56, and the check valve 59, the liquid level is detected by the upper and lower float switches 54 and 55 and input to the electrolyte control section 11. Electrolyte control section 11
When the liquid level in the dirty tank 48 reaches a predetermined value, the float switch 54 is activated when the liquid level is up or down.
.. When 55 is open, a drive signal is output to the electromagnetic pump 49 to pump up the electrolyte 45 in the dirty tank 48 and send it to the centrifuge 52 through the filter 50.
遠心分離機52は、電解液制御部11の制御信号により
モータ51が回転し、電解液45を分離処理する。In the centrifugal separator 52, a motor 51 rotates in response to a control signal from the electrolyte control unit 11, and the electrolyte 45 is separated.
そして、分離処理された電解生成物を含まない電解液4
4は、クリーンタンク53に貯留され、このクリーンタ
ンク53に貯留された電解液44は、電解液制御部11
の制御信号により電解液供給装置15の電磁ポンプ62
が作動して汲み上げ、電磁弁63を介して噴出ノズル6
4から一定の液圧て前記間隙19に噴出する。Then, an electrolytic solution 4 that does not contain the separated electrolytic products
4 is stored in a clean tank 53, and the electrolytic solution 44 stored in this clean tank 53 is transferred to the electrolytic solution control section 11.
The electromagnetic pump 62 of the electrolyte supply device 15 is activated by the control signal of
operates to pump up the water and send it to the jet nozzle 6 via the solenoid valve 63.
4, a constant liquid pressure is ejected into the gap 19.
このように、この発明によれば間隙19の電解生成物を
含んだ電解液45を、電極に設けた一端が間隙I9に開
口する孔46から吸引排除するため、加工で生成した電
解生成物を間隙19外に拡散させることが少なく、加工
槽16内の電解液の汚濁度を低く押えることができると
ともに、吸引と略同時に新鮮な電解液44を噴出するた
め、被加工面2a及び電極面4aに付着した電解生成物
等を排除することができ、間隙19の電解生成物を確実
に除去し得る。As described above, according to the present invention, the electrolytic solution 45 containing the electrolytic products in the gap 19 is sucked and removed from the hole 46 provided in the electrode, one end of which opens into the gap I9. It is possible to suppress the degree of contamination of the electrolytic solution in the machining tank 16 by minimizing diffusion outside the gap 19, and because the fresh electrolytic solution 44 is ejected almost simultaneously with suction, the surface to be processed 2a and the electrode surface 4a are It is possible to remove the electrolytic products etc. that have adhered to the gap 19, and the electrolytic products in the gap 19 can be reliably removed.
以上のような仕上げ加工を制御装置12の指令により所
定回数繰り返し、前記加工深さの累積値が、入力装置1
3て人力された人力データに基づいて加工条件制御部l
Oで計算した加工深さの設定値と比較し、加工深さ累積
値が加工深さ設定値に対し、所定の差(例えば1μm)
以内になった時に、CPU41が電流波形設定部39に
制御信号を出力し、電源装置8のパルスを電流密度が仕
上げ加工前期の電流密度の3/2を越える光沢面形成用
のパルスに切換える。そして、このパルスで前述したと
同様の方法により所定回数の加工を行い仕上げ加工を終
了する。The finishing process as described above is repeated a predetermined number of times according to a command from the control device 12, and the cumulative value of the machining depth is determined by the input device 1.
3. The processing condition control unit l based on the human data obtained manually.
Compare with the machining depth setting value calculated in
When the current density is within 3/2, the CPU 41 outputs a control signal to the current waveform setting section 39, and switches the pulse of the power supply 8 to a pulse for forming a glossy surface in which the current density exceeds 3/2 of the current density in the first half of the finishing process. Then, using this pulse, machining is performed a predetermined number of times in the same manner as described above, and finishing machining is completed.
第6図はこの発明の他の実施例を示し、上記実施例と同
一構成部分については同一符号を付してその説明を省略
する。この実施例の特徴は、間隙I9の電解液45の吸
引排除及び間隙19への新鮮な電解液44の供給を、電
極4に設けた孔46(ロッド18の孔65も含む)から
交互に行うようにした点にある。FIG. 6 shows another embodiment of the present invention, and the same components as those in the above embodiment are designated by the same reference numerals and the explanation thereof will be omitted. The feature of this embodiment is that the electrolytic solution 45 in the gap I9 is sucked out and the fresh electrolytic solution 44 is supplied to the gap 19 alternately through the hole 46 provided in the electrode 4 (including the hole 65 in the rod 18). The point is that I did it like this.
そのため、孔46と第1のシリンダ56及び電磁弁63
との間に切換弁66を設け、この切換弁66を電解液制
御部110制御信号により切換る。すなわち、間隙I9
の電解液を吸引排除する場合は、切換弁66を第1のシ
リンダ56側に切換え、間隙19の電解液を孔46→孔
65→切換弁66→逆止弁58→第1のシリンダ56の
室A→逆止弁59を介してダーティタンク48に回収し
、間隙19に新鮮な電解液44を噴出する場合は、切換
弁66を電解液供給装置15側に切換え、電解液44を
電磁ポンプ62→電磁弁63→切換弁66→孔65→孔
46を介して間隙19に噴出する。Therefore, the hole 46, the first cylinder 56 and the solenoid valve 63
A switching valve 66 is provided between the electrolytic solution controller 110 and the switching valve 66 is switched by a control signal from the electrolyte control section 110. That is, the gap I9
When removing the electrolytic solution by suction, switch the switching valve 66 to the first cylinder 56 side, and transfer the electrolytic solution in the gap 19 from the hole 46 to the hole 65 to the switching valve 66 to the check valve 58 to the first cylinder 56. When collecting fresh electrolyte 44 from chamber A to dirty tank 48 via check valve 59 and spouting fresh electrolyte 44 into gap 19, switch valve 66 to the electrolyte supply device 15 side and transfer electrolyte 44 to electromagnetic pump. 62 → solenoid valve 63 → switching valve 66 → hole 65 → ejected into gap 19 via hole 46.
なお、上記実施例においては、電極に1個の孔を設けた
場合について説明したが、電極に複数の孔を設けてもよ
く、また、電解液供給装置として一対のシリンダを設け
た場合について説明したが、例えばポンプとタイマーレ
ディー機能を有する電磁開閉器とを組み合わせて構成し
てもよい。In addition, in the above embodiment, the case where one hole was provided in the electrode was explained, but the electrode may be provided with a plurality of holes, and the case where a pair of cylinders were provided as the electrolyte supply device was explained. However, for example, a pump and an electromagnetic switch having a timer ready function may be combined.
[発明の効果]
以上詳細に説明したように、この発明に係る電解加工装
置にあっては、加工槽内で電解液を介して対設した被加
工物と電極間にパルス電流を供給するとともに、前記被
加工物と電極との間隙に生成した電解生成物を除去しな
がら被加工物を仕上げ加工する電解加工装置において、
一端が前記間隙に開口する如く前記電極に配設した孔か
ら前記電解生成物を含む電解液を吸引、回収して濾過す
る電解液濾過装置と、該電解液濾過装置で濾過した電解
液を前記間隙に間欠的に噴出する電解液供給装置と、該
電解液供給装置によって前記間隙に噴出した電解液が静
止した場合に前記被加工物と電極間にパルス電流を供給
する電源装置とて構成したので、被加工物と電極との間
隙に生成される電解生成物を確実に除去し得るとともに
、加工槽内の電解液の汚濁度を低くし得て、被加工面全
域に亘り加工条件が均一となり、高精度かつ微小面粗度
の鏡面状光沢を呈した三次元金属表面を短時間に得るこ
とができる。[Effects of the Invention] As explained in detail above, in the electrolytic processing apparatus according to the present invention, a pulse current is supplied between the workpiece and the electrodes that are disposed opposite to each other via the electrolyte in the processing tank, and , in an electrolytic processing apparatus that finishes processing a workpiece while removing electrolytic products generated in the gap between the workpiece and the electrode,
an electrolytic solution filtration device that sucks, collects and filters the electrolytic solution containing the electrolytic product through a hole provided in the electrode such that one end opens into the gap; An electrolytic solution supply device that intermittently sprays into the gap, and a power supply device that supplies a pulse current between the workpiece and the electrode when the electrolytic solution sprayed into the gap by the electrolytic solution supply device comes to rest. Therefore, it is possible to reliably remove electrolytic products generated in the gap between the workpiece and the electrode, and also to reduce the degree of contamination of the electrolyte in the processing tank, ensuring uniform processing conditions over the entire surface to be processed. As a result, a three-dimensional metal surface with high precision and a mirror-like luster with minute surface roughness can be obtained in a short time.
第1図はこの発明に係る電解加工装置を示す正面図、第
2図は同装置の側面図、第3図は同装置の概略構成図、
第4図は電源装置を示すブロック図、第5図は電解液濾
過装置及び電解液供給装置を示す概略構成図、第6図は
他の実施例を示す概略構成図である。
1・・・電解加工装置、2・・・被加工物、4・・・電
極、8・・・電源装置、9・・・モータ駆動制御部、1
゜・・・加工条件制御部、11・・・電解液制御部、1
2・・・制御装置、14・・・電解液濾過装置、15・
・・電解液供給装置、16・・・加工槽、41・・・C
PU、46.65・・・孔、56.57・・・シリンダ
、61・・・コンプレッサ、64・・・噴出ノズル、6
6・・・切換弁。
特許出願人 静岡製機株式会社
代表者 鈴 木 重 夫FIG. 1 is a front view showing an electrolytic processing device according to the present invention, FIG. 2 is a side view of the device, and FIG. 3 is a schematic configuration diagram of the device.
FIG. 4 is a block diagram showing a power supply device, FIG. 5 is a schematic diagram showing an electrolyte filtering device and an electrolyte supply device, and FIG. 6 is a schematic diagram showing another embodiment. DESCRIPTION OF SYMBOLS 1... Electrolytic processing device, 2... Workpiece, 4... Electrode, 8... Power supply device, 9... Motor drive control part, 1
゜... Processing condition control section, 11... Electrolyte control section, 1
2... Control device, 14... Electrolyte filtration device, 15.
... Electrolyte supply device, 16... Processing tank, 41...C
PU, 46.65...hole, 56.57...cylinder, 61...compressor, 64...spray nozzle, 6
6...Switching valve. Patent applicant: Shigeo Suzuki, representative of Shizuoka Seiki Co., Ltd.
Claims (4)
極間にパルス電流を供給するとともに、前記被加工物と
電極との間隙に生成した電解生成物を除去しながら被加
工物を仕上げ加工する電解加工装置において、 一端が前記間隙に開口する如く前記電極に配設した孔か
ら前記電解生成物を含む電解液を吸引、回収して濾過す
る電解液濾過装置と、該電解液濾過装置で濾過した電解
液を前記間隙に間欠的に噴出する電解液供給装置と、該
電解液供給装置によって前記間隙に噴出した電解液が静
止した場合に前記被加工物と電極間にパルス電流を供給
する電源装置とを備えた電解加工装置。(1) A pulse current is supplied between the workpiece and the electrode, which are placed opposite each other, through an electrolyte in the processing tank, and the workpiece is processed while removing electrolytic products generated in the gap between the workpiece and the electrode. An electrolytic processing device for finishing processing an object includes: an electrolytic solution filtration device that sucks, collects and filters an electrolytic solution containing the electrolytic product through a hole provided in the electrode such that one end opens into the gap; an electrolytic solution supply device that intermittently sprays an electrolytic solution filtered by a liquid filtration device into the gap, and a pulse between the workpiece and the electrode when the electrolytic solution sprayed into the gap by the electrolytic solution supply device comes to rest; An electrolytic processing device equipped with a power supply device that supplies current.
引動作と略同時に電解液を噴出することを特徴とする特
許請求の範囲第1項記載の電解加工装置。(2) The electrolytic processing apparatus according to claim 1, wherein the electrolytic solution supply device spouts out the electrolytic solution substantially simultaneously with the suction operation of the electrolytic solution filtration device.
した噴出ノズルから電解液を噴出することを特徴とする
特許請求の範囲第1項または第2項記載の電解加工装置
。(3) The electrolytic processing apparatus according to claim 1 or 2, wherein the electrolytic solution supply device jets out the electrolytic solution from a jet nozzle that is disposed toward the gap.
電解液を噴出することを特徴とする特許請求の範囲第1
項記載の電解加工装置。(4) Claim 1, wherein the electrolyte supply device spouts the electrolyte from a hole provided in the electrode.
Electrolytic processing equipment as described in section.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62272843A JPH01115516A (en) | 1987-10-28 | 1987-10-28 | Electrochemical machine |
KR1019870015395A KR910008243B1 (en) | 1987-06-23 | 1987-12-30 | Electro-chemical machine |
US07/206,482 US4880516A (en) | 1987-06-23 | 1988-06-13 | Electro-chemical machine |
EP88109530A EP0296476A3 (en) | 1987-06-23 | 1988-06-15 | Electro-chemical machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62272843A JPH01115516A (en) | 1987-10-28 | 1987-10-28 | Electrochemical machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01115516A true JPH01115516A (en) | 1989-05-08 |
Family
ID=17519548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62272843A Pending JPH01115516A (en) | 1987-06-23 | 1987-10-28 | Electrochemical machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01115516A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03131424A (en) * | 1989-10-11 | 1991-06-05 | Shizuoka Seiki Co Ltd | Processing liquid controller for electro-chemical finishing machine |
JP2004002910A (en) * | 2002-05-30 | 2004-01-08 | Ebara Corp | Electrolytic working method and apparatus |
JP2004060027A (en) * | 2002-07-31 | 2004-02-26 | Ebara Corp | Electro-chemical machining method and apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211940A (en) * | 1975-07-18 | 1977-01-29 | Agency Of Ind Science & Technol | Hologram regeneration apparatus |
JPS5271794A (en) * | 1975-12-12 | 1977-06-15 | Nippo Tsushin Kogyo Kk | Device for exhausting machining liquid for discharge machining |
-
1987
- 1987-10-28 JP JP62272843A patent/JPH01115516A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211940A (en) * | 1975-07-18 | 1977-01-29 | Agency Of Ind Science & Technol | Hologram regeneration apparatus |
JPS5271794A (en) * | 1975-12-12 | 1977-06-15 | Nippo Tsushin Kogyo Kk | Device for exhausting machining liquid for discharge machining |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03131424A (en) * | 1989-10-11 | 1991-06-05 | Shizuoka Seiki Co Ltd | Processing liquid controller for electro-chemical finishing machine |
JP2004002910A (en) * | 2002-05-30 | 2004-01-08 | Ebara Corp | Electrolytic working method and apparatus |
JP2004060027A (en) * | 2002-07-31 | 2004-02-26 | Ebara Corp | Electro-chemical machining method and apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR910008243B1 (en) | Electro-chemical machine | |
JPH01115516A (en) | Electrochemical machine | |
KR910000511B1 (en) | Electrolytic finishing system | |
KR930007253B1 (en) | Finishing method and machine employing electro-chemical machining | |
KR930000297B1 (en) | Electrolytic finishing method | |
KR910006552B1 (en) | Electrolytic finishing method | |
US3371022A (en) | Low-electrolyte-pressure electro-chemical machining | |
KR910006553B1 (en) | Electrolytic finishing method | |
JPH01205918A (en) | Finishing work through electrolytic working | |
JPH07108486B2 (en) | Finishing method and device by electrolytic processing | |
JPH0373221A (en) | Electrolytic finishing | |
JPH02106222A (en) | Method of electrolytic finishing work | |
EP0289215A2 (en) | Electrolytic finishing system | |
JPH02139124A (en) | Electolytic finishing method | |
JPS63306825A (en) | Machining gap control device for electro-chemical machine | |
JPH01316129A (en) | Finishing work through electrolytic working | |
JPH01252317A (en) | Electrolytic finish-machining method | |
JPH012819A (en) | Processing tank of electrolytic processing equipment | |
KR102427664B1 (en) | Anodizing processing system capable of linear movement of plated object | |
JPH01188230A (en) | Finishing method based on electrochemical machining and its device | |
JPH09141528A (en) | Electro-chemical machining device | |
JPH0332519A (en) | Electrolytic finishing process | |
JPH01135418A (en) | Finishing method by electrochemical machining | |
JPS63283818A (en) | Finishing method by electro-chemical machining | |
JPH02106223A (en) | Method of electrolytic finishing work |