JPH01252317A - Electrolytic finish-machining method - Google Patents
Electrolytic finish-machining methodInfo
- Publication number
- JPH01252317A JPH01252317A JP8092888A JP8092888A JPH01252317A JP H01252317 A JPH01252317 A JP H01252317A JP 8092888 A JP8092888 A JP 8092888A JP 8092888 A JP8092888 A JP 8092888A JP H01252317 A JPH01252317 A JP H01252317A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- machining
- clearance
- workpiece
- 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
- 238000003754 machining Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title description 10
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 14
- 239000003792 electrolyte Substances 0.000 claims description 14
- 238000003672 processing method Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 230000003746 surface roughness Effects 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
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 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
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000013505 freshwater Substances 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
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 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、電解仕上げ加工方法に係り、特に三次元形
状の被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 [Field of Industrial Application] The present invention relates to an electrolytic finishing method, and more particularly to an electrolytic finishing method for finishing a three-dimensionally shaped work surface in a short time and with high precision.
［従来の技術］
従来の電解加工方法としては、電極とワーゲとの間隙に
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ことにより、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、直流電流をワークから電極に流
して加工するものが、例えば特開昭６１−７１９２１号
公報及び特開昭６０−４４２２８号公報に開示されてい
る。[Prior art] In the conventional electrolytic processing method, the gap between the electrode and the wax is filled with an electrolytic solution such as sodium nitrate or sodium chloride.
By flowing this electrolytic solution at high speed, electrolytic products that inhibit stable electrolytic action, such as eluted metal compounds, metal ions, and hydrogen gas, are removed, while direct current is passed from the workpiece to the electrode for processing. For example, Japanese Patent Application Laid-Open No. 61-71921 and Japanese Patent Application Laid-open No. 60-44228 disclose.
［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ｔは、機械加工
手段として致命的な欠陥カイある。すなわち、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、複雑な輪郭形状を
有するワークと電極との間隙に電解液を−様な流速で流
すのが不可能であり、位置によって電解生成物の濃度が
変わり、間隙の各部分て加工条件に差異が生じ、ワーク
に電極の精密な転写を行うことが困難であるという不都
合があった。[Problems to be Solved by the Invention] However, this electrolytic machining method has a fatal defect as a machining means. In other words, especially in the bottom machining of three-dimensional shapes (machining of three-dimensional structures formed in the shape of concave holes), electrolytic solution is flowed at a similar flow rate into the gap between the workpiece and the electrode, which have a complex contour shape. The problem was that the concentration of electrolytic products varied depending on the position, the processing conditions differed for each part of the gap, and it was difficult to accurately transfer the electrode to the workpiece. .
そこでこの発明は、上記不都合を除去し、特に三次元形
状の被加工面を短時間かつ高精度に仕上げて、鏡面状の
光沢面等を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。SUMMARY OF THE INVENTION The object of the present invention is to provide an electrolytic finishing method that eliminates the above-mentioned disadvantages and can finish a three-dimensional processed surface in a short time and with high precision to obtain a mirror-like glossy surface.
［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、間隙をもって
対設した電極とワークとを接触させてその位置を検出す
るステップと、電極とワークとの接触を検出した後に電
極を所定位置まで上昇させるとともにその位置を上限位
置として記憶するステップと、前記間隙に介在する電解
液が静止した後に前記電極とワークとの極間に加工パル
スを供給するステップと、前記極間に供給した加工パル
スがオフした後に電極を前記上限位置まで上昇するステ
ップと、少なくとも電極が上昇している間に前記間隙に
新鮮な電解液の噴流を供給するステップと、前記上限位
置から所定の間隙まで電極を下降するステップとを有す
ることを特徴とする。[Means for Solving the Problems] In order to achieve this object, the present invention includes the steps of: detecting the position of an electrode and a workpiece by bringing them into contact with each other with a gap therebetween; and detecting the contact between the electrode and the workpiece. the step of raising the electrode to a predetermined position and storing that position as an upper limit position; the step of supplying a machining pulse between the electrode and the workpiece after the electrolytic solution interposed in the gap becomes stationary; raising the electrode to the upper limit position after the machining pulse applied between the electrodes is turned off; supplying a jet of fresh electrolyte to the gap at least while the electrode is being raised; and from the upper limit position and lowering the electrode to a predetermined gap.
［作 用コ
この発明の構成によれは、パルスの供給前に、電極とワ
ークとを接触させて加工原点を検出するとともに、電極
をワークの形状に応じ、電解液の噴流を邪魔しない位置
まで上昇させ、この位置を電極の上限位置として記憶す
る。そして、電極とワークとの極間にパルスを供給した
後、電極を記憶した位置まで上昇させるとともに、間隙
に新鮮な電解液の噴流を供給し、再び電極を所定間隙ま
で下降させるというステップを自動的に行うため、電極
の上昇ストロークを最適位置に設定し得るとともに、電
極間隙の設定を容易に行うことができる。[Function] According to the structure of the present invention, before the pulse is supplied, the electrode and the workpiece are brought into contact to detect the machining origin, and the electrode is moved to a position that does not interfere with the jet of electrolyte according to the shape of the workpiece. and store this position as the upper limit position of the electrode. Then, after supplying a pulse between the electrode and the workpiece, the electrode is raised to the memorized position, a jet of fresh electrolyte is supplied to the gap, and the electrode is lowered again to the predetermined gap. Therefore, the upward stroke of the electrode can be set to the optimum position, and the electrode gap can be easily set.
［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１〜４図は、この発明の一実施例を示すものである。1 to 4 show one 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、パルスモータ６の回転運
動を往復運動に変換する駆動変換部７、エアー供給装置
８からのエアーの供給により前記電極固定装置３を上下
動するビックユニット９、直流電源部１０と充放電部１
１からなり加工パルスを発生する電源装置１２、ヘッド
駆動制御部１３と加工条件制御部１４と電解液流制御部
１５等からなる制御装置１６、ワーク４に間する各種デ
ータ等を入力する入力装置１７、電解液を濾過するとと
もに、この濾過した電解液を噴出ノズル１８を介して噴
出することにより、電極２とワーク４０間隙１９に電解
液の噴流を供給する電解液１！過装置２０、加工槽２１
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 electrode fixing device 5, a drive conversion unit 7 that converts the rotational motion of the pulse motor 6 into reciprocating motion, a big unit 9 that moves the electrode fixing device 3 up and down by supplying air from an air supply device 8, and a DC power source. Part 10 and charging/discharging part 1
1, a power supply device 12 that generates machining pulses, a control device 16 that includes a head drive control section 13, a machining condition control section 14, an electrolyte flow control section 15, etc., and an input device that inputs various data related to the workpiece 4. 17. Electrolytic solution 1 that supplies a jet of electrolytic solution to the gap 19 between the electrode 2 and the workpiece 40 by filtering the electrolytic solution and ejecting the filtered electrolytic solution through the ejection nozzle 18! filtration device 20, processing tank 21
Consists of etc.
前記電極固定装置３は、その下部に設けたロッド２２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の被加工面４ａとが三
次元方向に−様な間隙１９を保つように固定する。この
電極固定装置３は、前記ヘッド駆動制御部１３の制御信
号によりパルスモータ６が回転し、この回転が駆動変換
部７によって上下方向の運動に変換されて上下動すると
ともに、ヘッド駆動制御部１３の制御信号によりエアー
供給装置８が作動して、ピックユニット９内にエアーが
供給されて上下動する。なお、電極固定装置３の駆ｆｊ
方法は、加工条件等に応じて、パルスモータ６及びエア
ー供給装置８の一方もしくはこれらの両者を同時に使用
して行う。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 22 provided at its lower part, with a gap such that the electrode surface 2a and the processed surface 4a of the workpiece 4 are spaced in a three-dimensional direction. Fix it so that it stays at 19. In this electrode fixing device 3, a pulse motor 6 rotates in response to a control signal from the head drive control section 13, and this rotation is converted into vertical movement by a drive conversion section 7 to move up and down, and the head drive control section 13 The air supply device 8 is activated by the control signal, and air is supplied into the pick unit 9 to move it up and down. In addition, the drive fj of the electrode fixing device 3
The method is carried out using one or both of the pulse motor 6 and the air supply device 8 at the same time, depending on processing conditions and the like.
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どの極間に、所定のパルス電流（
加工パルス）を供給する電源装置１２と、この電源装置
１２を制御する前記加工条件制御部１４は、例えば第２
図に示す如く構成する。A predetermined pulse current (
A power supply device 12 that supplies a machining pulse) and a machining condition control unit 14 that controls this power supply device 12, for example, a second
It is configured as shown in the figure.
即ち、電源装置８の直流電源部１０は、変圧器２３と整
流器２４とからなり１、変圧器２３により電圧を所定値
に降下させ整流器２４により整流して直流電流を得て、
後述する蓄電器２５−１〜２５−ｎに供給する。That is, the DC power supply section 10 of the power supply device 8 includes a transformer 23 and a rectifier 24 1, the voltage is lowered to a predetermined value by the transformer 23 and rectified by the rectifier 24 to obtain a DC current,
It is supplied to power storage units 25-1 to 25-n, which will be described later.
また、充放電部１１は、極間に電荷を放電する複数個の
蓄電器２５−１〜２５−ｎと、これらの各蓄電器２５−
１〜２５−ｎに接続し直流電源部１０側への電荷の逆流
を阻止するダイオード２６−１〜２６−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２７−１
〜２７−ｎと、前記各蓄電器２５−１〜２５−ｎを所定
に充電すべく前記直流電源部１０からの電源を給断する
充電スイッチ２８とからなる。The charging/discharging unit 11 also includes a plurality of capacitors 25-1 to 25-n that discharge charges between electrodes, and each of these capacitors 25-
Diodes 26-1 to 26-n connected to diodes 1 to 25-n to prevent backflow of charges to the DC power supply unit 10 side, and a discharge switch 27-1 that is opened and closed to discharge charges to the discharge side.
27-n, and a charging switch 28 that supplies and disconnects power from the DC power supply section 10 to charge each of the capacitors 25-1 to 25-n to a predetermined value.
前記加工条件制御部１４は、蓄電器２５−１〜２５−ｎ
の充電電圧値を検出する電圧検出器２９と、この電圧検
出器２９で検出した充電電圧値とＤ／Ａ変換器３０から
の出力値とを比較する電圧比較器３１と、この電圧比較
器３１からの出力信号により前記蓄電器２５−１〜２５
−ｎの充電の完了及び開始を検出する充電検出器３２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
３３と、この電流検出器３３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３４と、このピー
クホールド回路３４でホールドしたピーク電流値とＤ／
Ａ変換器３５の出力値とを比較する電流比較器３６と、
所定時間幅のパルスを発生するパルス発生器３９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４
０からの入力信号により前記各放電スイッチ２７−１〜
２７−ｎに開閉駆動信号を出力するゲート回路３７と、
前記各蓄電器２５−１〜２５−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３０に出力する充
電電圧設定器３８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３５に出力する電流設定器４１
と、前記入力装置１７０入カデータ等に基づき加工条件
等を演算・処理するＣＰＵ４２と、電極２とワーク４の
接触を検知する接触検知器４３等からなる。The processing condition control unit 14 controls the capacitors 25-1 to 25-n.
a voltage detector 29 that detects the charging voltage value of the voltage detector 29; a voltage comparator 31 that compares the charging voltage value detected by the voltage detector 29 with the output value from the D/A converter 30; The output signal from the capacitors 25-1 to 25
A charge detector 32 detects the completion and start of charging of -n, a current detector 33 detects the current value of the charge discharged between the electrodes, and a peak value of the current value detected by this current detector 33. The peak hold circuit 34 to hold, and the peak current value held by this peak hold circuit 34 and D/
a current comparator 36 that compares the output value of the A converter 35;
A pulse generator 39 that generates a pulse with a predetermined time width and a current waveform setting device 4 that sets the current waveform of the charge discharged between the poles.
0, each of the discharge switches 27-1 to 27-1.
a gate circuit 37 that outputs an opening/closing drive signal to 27-n;
a charging voltage setter 38 that sets a charging voltage value to be supplied to each of the capacitors 25-1 to 25-n and outputs the signal to the D/A converter 30; and a charging voltage setting device 38 that sets a current value flowing between the electrodes and outputs a signal thereof. a current setting device 41 that outputs the current to the D/A converter 35;
, a CPU 42 that calculates and processes machining conditions based on the data inputted by the input device 170, and a contact detector 43 that detects contact between the electrode 2 and the workpiece 4.
なお、図中符号４４は逆起電力によって各放電スイッチ
２７−１〜２７−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 44 in the figure is a diode that prevents each of the discharge switches 27-1 to 27-n from being destroyed by back electromotive force.
前記エアー供給装置８は、第３図に示す如く、コンプレ
ッサー４５と、入力側をこのコンプレッサー４５に接続
し、出力側を前記ピックユニット９に接続する電磁弁４
６等で、構成する。この電磁弁４６は、前記ヘッド駆動
制御部１３の制御信号によりその−゛方の弁が作動し、
コンプレッサー４５のエアーをビックユニット９内に供
給して、内部に配設したピストン（図示せず）を上動さ
せて電極固定装置３を上昇させるとともに、電磁弁４６
の他方の弁の作動によりビックユニット９内のエアーを
抜いてピストン及び電極固定装置３を下降させる。As shown in FIG. 3, the air supply device 8 includes a compressor 45 and a solenoid valve 4 whose input side is connected to the compressor 45 and whose output side is connected to the pick unit 9.
It is composed of 6th grade. The solenoid valve 46 is operated by a control signal from the head drive control section 13;
Air from the compressor 45 is supplied into the big unit 9 to move a piston (not shown) disposed inside upward to raise the electrode fixing device 3, and the solenoid valve 46
By operating the other valve, the air in the big unit 9 is removed and the piston and electrode fixing device 3 are lowered.
なお、第３図中符号４７は電解液濾過装置２０の電磁弁
、４８．４９は直列接続したシリンダ、５０．５１は逆
止弁、５２はクリーンタンクであり、クリーンタンク５
２内の濾過した新鮮な電解液を一対のシリンダ４８．４
９で汲み上げ、前記噴出ノズル１８から噴出することに
より、間隙１９に電解液の噴流を供給する。In addition, in FIG. 3, reference numeral 47 is a solenoid valve of the electrolyte filtration device 20, 48.49 is a cylinder connected in series, 50.51 is a check valve, and 52 is a clean tank.
2 into a pair of cylinders 48.4.
9 and jets it out from the jet nozzle 18 to supply a jet of electrolyte to the gap 19.
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４図のフローチャートにより説明する
。Next, an example of the finishing operation by this electrolytic finishing apparatus 1 will be explained with reference to the flowchart of FIG. 4.
仕上げ加工に際しては、電極固定装置３０ロツド２２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を固定し、電解仕上げ加工装置１の電源を投入（６
０） Ｌ／、電極２とワーク４の芯出しく６１）を行う
。芯出しを終了し、例えば自動スイッチをオンすると自
動運転が開始（６２）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４３が検知（６３
） Ｌ／て、その位置を加工原点としてＣＰＵ４２に記
憶する。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 electrode fixing device 30 rod 22, and the workpiece 4 is fixed to the workpiece fixing device 5, and the electrolytic finishing device Turn on the power of 1 (6
0) L/, perform centering 61) of the electrode 2 and workpiece 4. When centering is finished and the automatic switch is turned on, automatic operation starts (62), and the electrode 2 is lowered to move the workpiece 4.
The contact detector 43 detects this contact (63
) L/ and store that position in the CPU 42 as the machining origin.
そして、前記電解液濾過装置２００図示しないポンプ等
を作動させて、加工槽２１内に電解液を供給（６４）
Ｌ／、この電解液が所定の深さに達したら、加工槽に配
設した液面レベル計（図示せず）が作動して液面レベル
検知信号をＣＰＵ４２に出力（６５）する。ＣＰＵ４２
はこの信号又は作業者が停止ボタンを押しその信号が入
力されたら、自動運転を一旦中止し、手動による電極２
の上下動を可能にする。この時作業者が上昇ボタンを押
して電極２を所定の位置、即ち間隙１９に供給される電
解液の噴流が電極２に邪魔されずに間隙１９の隅々に行
き渡る位置まで上昇（６６）させる。Then, the electrolyte filtration device 200 operates a pump (not shown) or the like to supply the electrolyte into the processing tank 21 (64).
L/, when this electrolytic solution reaches a predetermined depth, a liquid level meter (not shown) provided in the processing tank is activated and outputs a liquid level detection signal to the CPU 42 (65). CPU42
When this signal or the operator presses the stop button and that signal is input, the automatic operation is temporarily stopped and the electrode 2 is manually operated.
vertical movement is possible. At this time, the operator presses the rise button to raise the electrode 2 to a predetermined position (66), that is, to a position where the jet of electrolyte supplied to the gap 19 reaches every corner of the gap 19 without being obstructed by the electrode 2.
そして、作業者が再スタートボタン（図示せず）を押す
゛と、ＣＰＵ４２が電極２の現在位置、即ち、上限位置
を記憶（６７）するとともに、電極２が自動的に下降し
て入力装置１７によって入力された所定の間隙１９を維
持する位置に電極２を設定（６８）する。電極２が設定
されると、加工槽２１内の電解液が所定の液面であるか
を確認（６９） ｂ、所定以上の液面である場合は、電
極２を単に上昇させて間隙に新鮮な電解液を噴出する一
クリーニングを実施（７０）する。このクリーニングに
より間隙１９の加工屑等を排除した後に、ワーク４の被
加工面４ａの加工面積に応じた面粗度向上用の所定のピ
ーク電流密度の単一の加工パルスを前記電極２とワーク
４との極間に供給（７１）する。Then, when the operator presses a restart button (not shown), the CPU 42 memorizes the current position of the electrode 2, that is, the upper limit position (67), and the electrode 2 automatically lowers to the input device 17. The electrode 2 is set at a position that maintains the predetermined gap 19 inputted by (68). When the electrode 2 is set, check whether the electrolyte in the processing tank 21 is at the specified liquid level (69) b. If the liquid level is above the specified level, simply raise the electrode 2 and fill the gap with fresh water. A cleaning process is performed (70) in which an electrolytic solution is spouted. After removing machining debris from the gap 19 through this cleaning, a single machining pulse of a predetermined peak current density is applied to the electrode 2 and the workpiece to improve the surface roughness according to the machining area of the workpiece surface 4a of the workpiece 4. 4 is supplied (71) between the poles.
極間にパルス電流が供給され、これがオフするとＣＰＵ
４２は、電極２をステップ（６７）で記憶した位置まで
上昇（７２）させるとともに、電極２の上昇と略同時に
前記噴出ノズル１８を作動させて、間隙１９に電解液の
噴流を供給（７３）する。なお、電極２の上昇は、前記
パルスモータ６の回転とエアー供給装置８によるエアー
の供給により同時に行う。これによって、パルス電流の
供給により電極２とワーク４間の間隙に生成した電解生
成物等の加工屑を間隙から排除する。そして、ＣＰＵ４
２は、予め入力装置１７によって入力された加工回数か
否かを初析（７４）シ、この判断（７４）でＮｏの場合
は、前記パルスモータ６及びエアー供給装置８に制御信
号を出力し、例えばパルスモータ６の逆回転及びピック
ユニット９のエアー抜きによって、電極２を下降させて
ステップ（６８）に戻る。A pulse current is supplied between the poles, and when it is turned off, the CPU
42 raises (72) the electrode 2 to the position memorized in step (67), and operates the jet nozzle 18 at approximately the same time as the electrode 2 is raised to supply a jet of electrolyte to the gap 19 (73). do. Incidentally, the electrode 2 is raised simultaneously by the rotation of the pulse motor 6 and the supply of air by the air supply device 8. As a result, machining debris such as electrolytic products generated in the gap between the electrode 2 and the workpiece 4 due to the supply of pulsed current is removed from the gap. And CPU4
2 performs a pro-eutactic analysis (74) to determine whether the number of machining has been inputted in advance by the input device 17, and if the determination (74) is No, outputs a control signal to the pulse motor 6 and the air supply device 8. Then, for example, by rotating the pulse motor 6 in the reverse direction and removing air from the pick unit 9, the electrode 2 is lowered and the process returns to step (68).
なお、電極２は、常にステップ（６８）の位置に設定さ
れるため、仕上げ加工の進行により電極２とワーク４の
間隙は大きくなる。Note that since the electrode 2 is always set at the position of step (68), the gap between the electrode 2 and the workpiece 4 increases as the finishing process progresses.
前記ステップ（７４）がＹＥＳ、即ち、面粗度向上用の
仕上げ加工を所定回数行ったら、制御装置１６の制御信
号により、電源装置１２から供給されるパルス電流を光
沢面形成用のパ、ルス電流に切換（７５）え、前記ステ
ップ（６８）〜（７３）と同様の加工を所定回数（８２
） 繰り返して全ての仕上げ加工を終了（８３）する。If the step (74) is YES, that is, if finishing processing for improving the surface roughness has been performed a predetermined number of times, the pulse current supplied from the power supply device 12 is changed into pulses for forming a glossy surface according to a control signal from the control device 16. Switch to electric current (75) and perform the same processing as steps (68) to (73) a predetermined number of times (82).
) Repeat to complete all finishing operations (83).
［発明の効果コ
この発明は上述の通りに構成したので、次に記載する効
果を奏する。[Effects of the Invention] Since the present invention is configured as described above, it produces the following effects.
■ 電極を、電解液の噴流の供給を邪魔しない最適位置
に設定することができ、間隙の電解生成物を確実に排除
し得て、高精度な表面品質を得ることができる。(2) The electrodes can be set at optimal positions that do not interfere with the supply of electrolyte jets, and electrolytic products in the gaps can be reliably removed, resulting in highly accurate surface quality.
■ 電極が上限位置まで自動的に上昇し、この位置から
所定の間隙位置まで自動的に下降するため、電極の設定
を自動的に行うことができ、仕上げ加工の自動運転が可
能となって、省力化が遅れている金型加工の仕上げ加工
分野での機械化を達成することができる。■ Since the electrode automatically rises to the upper limit position and automatically lowers from this position to the predetermined gap position, the electrode settings can be performed automatically, making it possible to perform automatic finishing machining. It is possible to achieve mechanization in the finishing processing field of mold processing, where labor saving has been delayed.
第１図はこの発明に係る電解仕上げ加工方法を実施し得
る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図は要部の回路構成図、第４図は仕上げ
加工動作の一例を示すフローチャートである。
１・・・電解仕上げ加工装置、２・・・電極、４・・・
ワーク、 １２・・・電源装置、１３・・・
ヘッド駆動制御部、１４・・・加工条件制御部１５・・
・電解液流制御部、 １６・・・制御装置、１９番・９
間隙、 ４訃・φＣＰＵ。
４３・、・・接触検知器。
特許出願人 静岡製機株式会社
代表者鈴木重夫
第１図
第４図Fig. 1 is a block diagram of an electrolytic finishing apparatus that can carry out the electrolytic finishing method according to the present invention, Fig. 2 is a block diagram of the main parts, Fig. 3 is a circuit diagram of the main parts, and Fig. 4 is a finishing diagram. It is a flowchart which shows an example of processing operation. 1... Electrolytic finishing processing device, 2... Electrode, 4...
Workpiece, 12...Power supply device, 13...
Head drive control section, 14... machining condition control section 15...
・Electrolyte flow control unit, 16...control device, No. 19・9
Gap, 4 φCPU. 43... Contact detector. Patent applicant Shizuoka Seiki Co., Ltd. Representative Shigeo Suzuki Figure 1 Figure 4
Claims (1)
てその位置を検出するステップと、電極とワークとの接
触を検出した後に電極を所定位置まで上昇させるととも
にその位置を上限位置として記憶するステップと、前記
間隙に介在する電解液が静止した後に前記電極とワーク
との極間に単一の加工パルスを供給するステップと、前
記極間に供給した加工パルスがオフした後に電極を前記
上限位置まで上昇するステップと、少なくとも電極が上
昇している間に前記間隙に新鮮な電解液の噴流を供給す
るステップと、前記上限位置から所定の間隙まで電極を
下降するステップと、を有する電解仕上げ加工方法。(1) A step of bringing the electrode and the workpiece, which are disposed opposite each other with a gap, into contact and detecting their position, and after detecting the contact between the electrode and the workpiece, raising the electrode to a predetermined position and storing that position as the upper limit position. a step of supplying a single machining pulse between the electrode and the workpiece after the electrolytic solution interposed in the gap has come to rest; electrolytic finishing comprising the steps of raising the electrode to a predetermined gap, supplying a jet of fresh electrolyte to said gap at least while the electrode is being raised, and lowering the electrode from said upper limit position to a predetermined gap. Processing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8092888A JPH01252317A (en) | 1988-03-31 | 1988-03-31 | Electrolytic finish-machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8092888A JPH01252317A (en) | 1988-03-31 | 1988-03-31 | Electrolytic finish-machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01252317A true JPH01252317A (en) | 1989-10-09 |
Family
ID=13732099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8092888A Pending JPH01252317A (en) | 1988-03-31 | 1988-03-31 | Electrolytic finish-machining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01252317A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991012918A1 (en) * | 1990-03-01 | 1991-09-05 | Shizuoka Seiki Co., Ltd. | Electrolytic finishing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5211940A (en) * | 1975-07-18 | 1977-01-29 | Agency Of Ind Science & Technol | Hologram regeneration apparatus |
| JPS5815631A (en) * | 1981-07-21 | 1983-01-29 | Fanuc Ltd | Control system for electric discharge processing machine |
| JPS62255013A (en) * | 1986-04-28 | 1987-11-06 | Toyota Motor Corp | Electro-chemical machining device |
-
1988
- 1988-03-31 JP JP8092888A patent/JPH01252317A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5211940A (en) * | 1975-07-18 | 1977-01-29 | Agency Of Ind Science & Technol | Hologram regeneration apparatus |
| JPS5815631A (en) * | 1981-07-21 | 1983-01-29 | Fanuc Ltd | Control system for electric discharge processing machine |
| JPS62255013A (en) * | 1986-04-28 | 1987-11-06 | Toyota Motor Corp | Electro-chemical machining device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991012918A1 (en) * | 1990-03-01 | 1991-09-05 | Shizuoka Seiki Co., Ltd. | Electrolytic finishing method |
| JPH03251315A (en) * | 1990-03-01 | 1991-11-08 | Shizuoka Seiki Co Ltd | Control method for electrode position in electrolytic finishing |
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