201121682 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係有關於一種加工裝置及其方法，尤其是指一 種切換電解液流向之加工裝置及其方法。 【先前技掏·】 [0002] 傳統的加工方法對工件進行加工之方式不外乎利用刀 具進行車、銑、鉋、磨或鑽，但不論何種方法，都產生 以下缺失：（1)表面粗糙度差。以車、銑、鉋、磨或鑽 進行接觸式加工時，雖有較快加工速度，但無法達到高 Ο 表面平整度之要求。（2)工件微量變形或殘留應力，因 工件以直接接觸之加工方式進行，容易因壓力或熱易造 成工件微量變形或殘留應力。（3)無法對高硬度金屬加 工。接觸式加工方式速度雖快，但，亦造成刀具磨損， 對於高硬度之金屬，甚至可能發生刀具無法對工件進行 加工之窘境。 對於傳統加工之缺點，因此有非接觸式之加工方式產 生，以克服上述之加工問題，例如電化學加工，所以常 ® 被應用於高品質表面或他種機械難以加工之場合。電化 學（electrochemistry)是一門涉及電子與化學反應 相互關係的科學，而電子的各種性質與行為，係直到近 百年來，才逐漸明瞭。使得電化學雖比其他科學古老， 但發展卻較為延遲。然而，在環保意識高漲的今日，電 化學已成為一門「新興」且倍受期待的科學。一般而言 ，電化學係指與電有關之化學現象的技術，而探討化學 反應與電荷轉移間之關係，並利用電源之電位而調整電 極之表面電子能量，使得電活性物種（Electroactive 098144097 表單編號A0101 第3頁/共23頁 09; 201121682BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus and method thereof, and more particularly to a processing apparatus and method for switching an electrolyte flow direction. [Previous Technology·] [0002] The traditional machining method is to process the workpiece by using the tool for turning, milling, planing, grinding or drilling. However, no matter what method, the following defects are caused: (1) Surface Poor roughness. When the contact processing is carried out by car, milling, planing, grinding or drilling, although the processing speed is faster, the requirement of high surface flatness cannot be achieved. (2) The slight deformation or residual stress of the workpiece is caused by the direct contact of the workpiece, which is easy to cause slight deformation or residual stress of the workpiece due to pressure or heat. (3) It is not possible to process high hardness metals. The contact machining method is fast, but it also causes tool wear. For high-hardness metals, there may even be a situation in which the tool cannot process the workpiece. For the shortcomings of conventional machining, non-contact machining is produced to overcome the above-mentioned processing problems, such as electrochemical machining, so often ® is applied to high-quality surfaces or where it is difficult to machine. Electrochemistry is a science involving the interrelationship between electrons and chemical reactions, and the various properties and behaviors of electrons have only gradually become apparent in the last hundred years. Although electrochemistry is older than other sciences, its development is relatively delayed. However, today, with a high awareness of environmental protection, electrochemistry has become an “emerging” and highly anticipated science. In general, electrochemistry refers to the technique of electrical phenomena related to electricity, and explores the relationship between chemical reactions and charge transfer, and uses the potential of the power source to adjust the surface electron energy of the electrode to make electroactive species (Electroactive 098144097 form number A0101 Page 3 of 23 09; 201121682
Species)與電極發生電子轉移。基於上述原理，而發展 出電 4 匕學力口工(electro chemical machining)，其 有別於傳統加工方法，而為非接觸式加工，係用來加工 極硬材料或者傳統加工方法難以加工的材料或加工物件 ，電化學加工方法又稱為電解加工。 然而，利用電化學加工仍具有一些缺點，其詳細說明 如下。請參閱第一圖，其為習用電化學加工對大面積之 工件進行加工之示意圖。一般而言，電化學加工裝置包 含一電極1、一電解液3與一加工治具（圖未示），電極1 與工件5位於加工治具内。此外，一電源單元（圖未示） 之兩極會分別連接於電極1與工件5以提供電源，且電解 液3會經由加工治具之一流入口而流入加工治具，且流經 於電極1與工件5之間，且從加工治具之一流出口流出， 如此即可對工件5進行電化學加工。利用電化學加工方式 對大面積之工件5進行加工時，由於電解液3在電極1及工 件5間流動時，電解液3通過期間之時間愈久，其會因為 參與反應之時間愈久之緣故，而導致距離流入口越遠處 之電解液3，其鈍化愈趨嚴重，即產生之生成物7愈多， 如此會降低對工件5之加工效果。因此，於加工一段時間 後，接近於流入口之工件表面呈加工深度較深之情形， 而接近流出口之工件表面則反之。如此，即導致進行電 化學加工後之工件5的表面會有前後段加工不均均的現象 ，如此影響工件5之精度及品質。 因此，本發明即針對上述問題而提出一種切換電解液 流向之電化學加工裝置及其方法，不僅可改善上述習用 缺點，又可增加電化學加工之加工精度及加工品質，以 098144097 表單編號A0101 第4頁/共23頁 0982075457-0 201121682 解決上述問題。 【發明内容】 [0003] Ο ◎ 本發明之目的之一，在於提供一種切換電解液流向之 電化學加工裝置及其方法，其藉由切換電解液流經電極 與工件間的流向，而避免電解液之鈍化情形影響電化學 加工之精度，以達到增加電化學之加工精度及工件品質 之目的。 本發明切換電解液流向之電化學加工裝置及其方法， 其用以加工一工件，而包Ί--加工單元、一電源單元、 一輸送單元與一切換單元，一電極設置於加工單元中， 一電解液流經於電極與工件之間，且加工單元之工件與 電極分別連接於電源單元之兩極，輸送單元輸送電解液 至加工單元中，切換單元連接於輸送單元與加工單元之 間，用以切換電解液流經電極與工件之間的流向，以達 到增加電化學加工之精確度及工件表面品質之目的。 此外，本發明更包含一控制單元，控制單元連接於切 換單元，用於控制切換單元切換電解液之流向的一切換 時間。控制單元更啟動或關閉電源單元，切換單元切換 電極液流經於電極與工件之間的流向之前，控制單元關 閉電源單元，且延遲一時間後切換單元切換電極液的流 向，切換單元切換電極液的流向之後，控制單元延遲一 時間後啟動電源單元。如此，可確保鈍化之電解液流出 於加工單元後，再切換電解液之流向，而提高未鈍化之 電解液流於加工單元，以提升工件之加工品質。 【實施方式】 098144097 表單編號Α0101 第5頁/共23頁 0982075457-0 201121682 [0004] 茲為使貴審查委員對本發明之技術特徵及所達成之 功效更有進一步之瞭解與認識，謹佐以較佳之實施例圖 及配合詳細之說明，說明如後： 首先，請參閱第二圖與第三圖，係本發明切換電解液 流向之電化學加工裝置之一較佳實施例的示意圖與加工 單元的示意圖。如圖所示，本發明切換電解液流向之電 化學加工裝置包令—加工單元12、一電源單元14、一輸 送單元16與一切換單元18。加工單元12具有一電極124 、一第一傳輸口 126與一第二傳輸口 128，且加工單元12 内更放置有欲進行加工的工件122，第一傳輸口 126與第 Ο 二傳輸口 128用以傳輸一電解液13於加工單元12，而讓電 解液13流動於電極124與工件122之間，電解液13係經由 第一傳輸口 126或第二傳輸口 128流入或流出於加工單元 12。電源單元14之兩極分別耦接於工件122與電極124， 以供應電源。如圖所示，電源單元24具有正負兩極，其 正極耦接工件122，而負極耦接電極124。 復參閱第二圖，輸送單元16用於將電解液13輸送至加 工單元12，而讓電解液13流過工件122及電極124間，以 〇 讓工件122進行電化學加工。切換單元18連接於輸送單元 16與加工單元12之間，用以切換電解液13流入於加工單 元12之流向。起初電解液13從輸送單元16輸出後，電解 液13係會經由切換單元18從第一傳輸口 126流入至加工單 元12，而從加工單元12之第二傳輸口 128流出，並經由第 二傳輸口 12 8流入切換單元18，而回流至輸送單元16。當 工件122進行電化學加工一預定時間後，切換單元18會切 換電解液13流入於加工單元12之流向，而由第二傳輸口 098144097 表單編號A0101 第6頁/共23頁 0982075457-0 201121682 128輸送電解液13流人加卫單元12，而由第―傳輸口126 流出，並經切換單元18回流至輪送單叫。切換單元ΐ8 在工件122進行電化學加工的過程中，則會重複交替切換 電解液13流人於加工單元12的流向，g卩切㈣解液咖 於電極124與工件m之間的流向。本發明之切換單元18 之-較佳實施例為―流向切換閥，其—實施例例如為電 磁閥。 本發明藉由切換改變電解液13流入於加工單元12之流 ❹ 向，如此避免純化後之電解％13含有較多生成物129作用 於工件122之特定區域’例如接近於第—傳輸口 126或第 二傳輸口128之X件表面’因此可提升電化學加工對大面 積之工件122之加工均句度及加工品質，而提生電化學加 工之加工精度。 復參閱第二圖，本發明之輸送單元16更包含 〇 161、一過遽單元163與一馬達阳》電解液13存放於錯 存槽161中’儲存槽161連接絶過料元ld3且用以過 電解液13，以將電解額f之生麻129核，用 達165將it雜之轉㈣經由婦單训輸送至加工: 元12 ’而流於電極124與工件122之間，以對工 早 行電化學加工。 復參閱第二圖，本發明之切換單元18具有一輸入 、一輸出口 R、一第-接口 A與-第二接口 B。切換單::8 之輸入口 P連通於輸入單元16之—輸出口⑽，而8 元18之輸出口 R則連通於切換單元18之一輸入口⑽。早 換單元18之第-接πΑ連接傳輪單元16之—第―;切 098144097 之端帛導el66之另一端則連接於加工單 表單编號A0101 第7頁/共23頁 艾第 0982075457-0 201121682 一傳輸口 126。切換單元18之第二接口 B連接於傳輸單元 16之一第二導管167之一端，第二導管167之另一端則連 接於加工單元12之第二傳輸口 128。 承接上述，由於加工單元12之第一傳輸口 126與第二 傳輸口 128分別連接於切換單元18之第一接口 A與第二接 口B，且切換單元18之輸入口 P與輸出口 R分別連通於輸入 單元16之輸出口 168與輸入口169。因此，加工單元12、 切換單元18與輸送單元16即串連為一環狀迴路。輸送單 元16經由輸出口 168輸送電解液13至切換單元18之輸入 口 P，再經過第一接口 A與第一導管166而輸送電解液13至 加工單元12之第一傳輸口 126，而流入於加工單元12，以 流經於電極124與工件122之間。之後，電解液13會從加 工單元12之第二傳輸口 128流出，且經過第二導管167與 切換單元18之第二接口 B而流入於切換單元18，以經由切 換單元18之輸出口 R與輸送單元16之輸入口 169，而輸送 電解液13回流至輸送單元16。 當加工單元12進行電化學加工一預定時間後，切換單 元18會切換電解液13於加工單元12内之流向。於此實施 例中，切換單元18會進行換位，而使得切換單元18之輸 入口 P連通於第二接口 B，而切換單元18之輸出口 R連通於 第一接口 A。輸送單元16所輸送之電解液13會經由切換單 元18之輸入口 P與第二接口 B而傳輸至加工單元12之第二 傳輸口 128，以流入於加工單元12，且從加工單元12之第 一傳輸口 126流出，如此即切換電解液13流經於電極124 與工件122之間的流向。從加工單元12之第一傳輸口 126 流出之電解液13，係經由切換單元18之第一接口 A與輸出 098144097 表單編號A0101 第8頁/共23頁 0982075457-0 201121682 口 R而回流至輸送單元16之儲存槽161。 復參閱第二圖，本發明之電化學加工裝置更包含一控 制單元19，其耦接切換單元18而用於控制切換單元18之 一切換時間，即用於控制切換電解液13之流向的時間。 此外，控制單元19更耦接電源單元19，以控制電源單元 14之開啟與關閉。切換單元18切換電解液13流經於電極 124與工件122之間的流向之前，控制單元19會先關閉電 源單元14，以停止供應電源，即停止對工件122進行電化 學加工，如此延遲一時間後，切換單元18再切換電解液 0 13流經於電極124與工件122之間的流向。由於，進行電 化學加工之過程，電解液13會因為較長時間反應而產生 較多生成物129，即電解液13產生鈍化，所以在切換單元 18切換電解液13之流向之前，停止供應電源而停止對工 件122進行電化學加工，以讓電解液13停止反應而不會繼 續產生生成物129，且電解液13會持續流動，而讓生成物 129流出於加工單元12。經過延遲時間後，控制單元19再 控制切換單元18切換電解液13之流向。於完成切換電解 Ο 液13之流向後，控制單元19再延遲一時間，則啟動電源 單元14以提供電源，而接續對工件122進行電化學加工。 本發明藉由上述之延遲時間，可避免鈍化之電解液13影 響電化學加工之加工效率與精工精度。 由上述說明可知，本發明為一種切換電解液流向之電 化學加工裝置，其藉由電源單元14連接於加工單元12之 工件122及電極124，且使電解液13經由輸送單元16輸送 進入加工單元12以進行電化學加工。於電化學加工進行 一預定時間後，切換電解液13流入於加工單元12之流向 098144097 表單編號A0101 第9頁/共23頁 0982075457-0 201121682 ，即切換電解液13流經於電極124與工件122之間的流向 。進行電化學加工之過程反覆切換電解液13之流向，藉 此提高電化學加工之加工品質以及加工均勻度，進而達 到增加電化學加工之加工精度及品質之目的。 請一併參閱第四圖與第五A圖至第五G圖，係本發明之 控制單元控制電源單元之一較佳實施例的時序圖與切換 電解液流向之過程的示意圖。如第五A圖所示，起初開始 進行電化學加工時，電解液13經由第一傳輸口 126流入加 工單元12，並從第二傳輸口 128流出加工單元12而回流至 輸送單元16，且控制單元19則如第四圖之時間T1所示， Ο 啟動電源單元14用於供應電源，以對工件122進行電化學 加工。之後，如第五B圖所示，由於工件122進行電化學 加工一定時間後，電解液13則會產生較多生成物129，電 解液13則開始產生鈍化現象，因此本發明在切換電解液 13之流向之前，控制單元19則會如第四圖的T2時間所示 ，關閉電源單元14而停止供應電源，以暫時停止進行電 化學加工，且延遲一適當時間，而讓電解液13於此段延 遲時間經由第二傳輸口 128流出加工單元12，以將生成物 0 129流出於加工單元12。 接著，如第五C圖所示，控制單元19會控制切換單元 18進行切換，以切換電解液13之流向，而讓電解液13經 由第二傳輸口 128流入至加工單元12，且由第一傳輸口 126流出加工單元12而回流至輸送單元16。此時，控制單 元19仍關閉電源單元14。經延遲一適當時間後，如第四 圖之T3時間所示，控制單元19開啟電源單元14以供應電 源，而如第五D圖所示，接續對工件1 2 2進行電化學加工 098144097 表單編號A0101 第10頁/共23頁 0982075457-0 201121682 ο 。如此，即完成切換電解液13之流向的流程，本發明藉 由延遲適當時間，可確保生成物129流出於加工單元12， 而確保新鮮乾淨的電解液13流入於電極124與工件122之 間，以確保對工件122進行電化學加工之銳利度與加工品 質與精度。 然後，如第五Ε圖所示，電解液13進行電化學加工至 一段時間後，則又會產生較多生成物129，該些生成物 129則會使得電解液13鈍化。此時，如第四圖Τ4時間所示 ，切換電解液13之流向之前，控制單元19關閉電源單元 14而停止供應電源，以暫時停止進行電化學加工，而停 止繼續產生生成物129，並藉由電解液13經由第一傳輸口 126繼續流出於加工單元12，而讓生成物129流出於加工 單元12。再來如第五F圖所示，控制單元19控制切換單元 18切換電解液13之流向，而經由第一傳輸口 126輸送電解 液13流入於加工單元12，且由第二傳輸口 128流出於加工 單元12而回流至輸送單元16。此時，電源蕈元19仍為關 閉狀態，待延遲一時間後，如第四圖Τ5時間所示，控制 ❹ 單元19開啟電源單元14以供應電源，而如第五G圖所示， 接續對工件122進行電化學加工。上述，第五G圖係相同 於第五Α圖，其表示輪回至起始加工動作，而接續先前說 明之加工流程。 本發明之切換電解液流向的電化學加工方式，即如上 述之加工流程，反覆進行。如此，本發明可避免鈍化之 電解液13長時作用於工件122之特定區域，使得靠近第一 傳輸口 126與第二傳輸口 128之工件122的加工表面皆會 接觸新鮮的電解液13，因此可提升大面積之工件122進行 098144097 表單編號A0101 第11頁/共23頁 0982075457-0 201121682 電化學加工之均勻度及加工表面品質。由上述說明可知 ，本發明可避免電解液13因進行電化學加工時間越長， 其内產生之生成物129越多，以導致進行電化學加工之工 件122的加工表面品質較差，且加工均勻度不佳等情形。 綜上所述，本發明為切換電解液流向之電化學加工裝 置及其方法，其包含加工單元、電源單元、輸送單元與 切換單元用以加工工件，加工單元設有電極，電解液流 經於電極和工件之間，以對工件進行加工，且電源單元 之兩極分別連接於電極和工件，輸送單元輸送電解液流 入加工單元，切換單元連接於輸送單元與加工單元之間 ，以切換電解液流經電極與工件之間的流向，如此，即 可避免工件之特定區域（例如接近於加工單元之第一傳輸 口或第二傳輸口之工件表面）長時間處於純化之電解液加 工狀態，而提高電化學加工之精確度及加工品質。 故本發明實為一具有新穎性、進步性及可供產業上利 用者，應符合我國專利法專利申請要件無疑，爰依法提 出發明專利申請，祈鈞局早曰賜准專利，至感為禱。 惟以上所述者，僅為本發明一較佳實施例而已，並非 用來限定本發明實施之範圍，故舉凡依本發明申請專利 範圍所述之形狀、構造、特徵及精神所為之均等變化與 修飾，均應包括於本發明之申請專利範圍内。 【圖式簡單說明】 [0005] 第一圖係習用電化學加工對大面積之工件進行加工的示 意圖； 第二圖係本發明切換電解液流向之電化學加工裝置之一 098144097 表單編號A0101 第12頁/共23頁 0 201121682 較佳實施例的示意圖； 第三圖係本發明之加工單元之一較佳實施例的示意圖； 第四圖係本發明之控制單元控制電源單元之一較佳實施 例的時序圖；以及 第五A至五G圖係本發明之—較佳實施例切換電解液流向 之過程的電解液流向的示意圖 【主要元件符號說明】 〇Species) electron transfer with the electrode. Based on the above principles, the development of electric chemical machining, which is different from the traditional processing method, is a non-contact processing, which is used to process extremely hard materials or materials that are difficult to process by conventional processing methods or Processing objects, electrochemical processing methods are also known as electrolytic processing. However, the use of electrochemical machining still has some disadvantages, which are described in detail below. Please refer to the first figure, which is a schematic diagram of the processing of large-area workpieces by conventional electrochemical machining. Generally, the electrochemical processing apparatus includes an electrode 1, an electrolyte 3, and a processing jig (not shown), and the electrode 1 and the workpiece 5 are located in the processing jig. In addition, two poles of a power supply unit (not shown) are respectively connected to the electrode 1 and the workpiece 5 to provide power, and the electrolyte 3 flows into the processing fixture through one of the inlets of the processing fixture, and flows through the electrode 1 and The workpiece 5 is electrochemically processed between the workpieces 5 and out of the outlet of one of the processing jigs. When the large-area workpiece 5 is processed by the electrochemical machining method, since the electrolyte 3 flows between the electrode 1 and the workpiece 5, the longer the period of the electrolyte 3 is passed, the longer it takes to participate in the reaction, The electrolyte 3 which is farther away from the inlet is more severely deactivated, that is, the more the product 7 is produced, which reduces the processing effect on the workpiece 5. Therefore, after a period of processing, the surface of the workpiece close to the inflow opening is deep in processing depth, and the surface of the workpiece close to the outflow opening is reversed. As a result, the surface of the workpiece 5 after the electrochemical processing is unevenly processed in the front and rear stages, which affects the accuracy and quality of the workpiece 5. Therefore, the present invention has been directed to an electrochemical processing apparatus and method for switching the flow direction of an electrolyte, which not only improves the above-mentioned conventional disadvantages, but also increases the processing precision and processing quality of electrochemical machining, with 098144097 Form No. A0101 4 pages/total 23 pages 0982075457-0 201121682 To solve the above problem. SUMMARY OF THE INVENTION [0003] One of the objects of the present invention is to provide an electrochemical processing apparatus for switching the flow of an electrolyte and a method thereof, which avoids electrolysis by switching the flow of electrolyte through the electrode and the workpiece. The passivation of the liquid affects the precision of the electrochemical machining to achieve the purpose of increasing the processing precision of the electrochemical and the quality of the workpiece. The invention relates to an electrochemical processing device for switching electrolyte flow and a method thereof for processing a workpiece, and a packaging unit, a processing unit, a power supply unit, a conveying unit and a switching unit, and an electrode is disposed in the processing unit. An electrolyte flows between the electrode and the workpiece, and the workpiece and the electrode of the processing unit are respectively connected to the two poles of the power unit, the conveying unit transports the electrolyte to the processing unit, and the switching unit is connected between the conveying unit and the processing unit, In order to increase the accuracy of electrochemical processing and the surface quality of the workpiece, the flow direction of the electrolyte flowing between the electrode and the workpiece is switched. Further, the present invention further includes a control unit connected to the switching unit for controlling a switching time at which the switching unit switches the flow direction of the electrolyte. The control unit further activates or deactivates the power supply unit. Before the switching unit switches the electrode liquid to flow between the electrode and the workpiece, the control unit turns off the power supply unit, and after a delay, the switching unit switches the flow direction of the electrode liquid, and the switching unit switches the electrode liquid. After the flow, the control unit delays the power supply unit after a delay. In this way, it is ensured that the passivated electrolyte flows out of the processing unit, and then the flow direction of the electrolyte is switched, and the unpassivated electrolyte is flowed to the processing unit to improve the processing quality of the workpiece. [Embodiment] 098144097 Form No. 1010101 Page 5 of 23 0982075457-0 201121682 [0004] In order to make your reviewer have a better understanding and understanding of the technical features and effects achieved by the reviewer, I would like to compare The preferred embodiment and the detailed description are as follows: First, please refer to the second and third figures, which are schematic diagrams and processing units of a preferred embodiment of the electrochemical processing apparatus for switching the flow of the electrolyte of the present invention. schematic diagram. As shown, the present invention switches the electrochemical processing device to the processing unit 12, a processing unit 12, a power supply unit 14, a delivery unit 16, and a switching unit 18. The processing unit 12 has an electrode 124, a first transmission port 126 and a second transmission port 128, and the workpiece 122 to be processed is placed in the processing unit 12, and the first transmission port 126 and the second transmission port 128 are used. An electrolyte 13 is transferred to the processing unit 12, and the electrolyte 13 is allowed to flow between the electrode 124 and the workpiece 122. The electrolyte 13 flows into or out of the processing unit 12 via the first transfer port 126 or the second transfer port 128. The two poles of the power unit 14 are respectively coupled to the workpiece 122 and the electrode 124 to supply power. As shown, the power supply unit 24 has positive and negative poles, the positive pole of which is coupled to the workpiece 122 and the negative pole coupled to the electrode 124. Referring back to the second drawing, the transport unit 16 is used to transport the electrolyte 13 to the processing unit 12, and the electrolyte 13 is allowed to flow between the workpiece 122 and the electrode 124 to electrochemically process the workpiece 122. The switching unit 18 is connected between the transport unit 16 and the processing unit 12 for switching the flow of the electrolyte 13 into the processing unit 12. After the electrolyte 13 is initially output from the delivery unit 16, the electrolyte 13 flows from the first transfer port 126 to the processing unit 12 via the switching unit 18, and flows out of the second transfer port 128 of the processing unit 12, and via the second transfer. The port 12 8 flows into the switching unit 18 and flows back to the conveying unit 16. After the workpiece 122 is electrochemically processed for a predetermined time, the switching unit 18 switches the flow of the electrolyte 13 into the processing unit 12, and the second transmission port 098144097 is shown in the form number A0101. Page 6 of 23 page 0982075457-0 201121682 128 The electrolyte 13 is transported to the person in the unit 12, and flows out of the first port 126, and is returned to the single call via the switching unit 18. The switching unit ΐ8 alternately switches the flow direction of the electrolyte 13 flowing into the processing unit 12 during the electrochemical processing of the workpiece 122, and the liquid flow between the electrode 124 and the workpiece m is performed. The preferred embodiment of the switching unit 18 of the present invention is a flow direction switching valve, which is, for example, an electromagnetic valve. The present invention changes the flow direction of the electrolyte 13 flowing into the processing unit 12 by switching, so that the purified electrolyte %13 contains a large amount of product 129 acting on a specific region of the workpiece 122, for example, close to the first transfer port 126 or The surface of the X piece of the second transfer port 128 can improve the processing accuracy and processing quality of the workpiece 122 of the large area by electrochemical machining, and improve the processing precision of the electrochemical process. Referring to the second figure, the conveying unit 16 of the present invention further comprises a crucible 161, a passing unit 163 and a motor anode 13 are stored in the storage tank 161. The storage tank 161 is connected to the excess element ld3 and used for The electrolyte 13 is used to electrolyze the 129 core of the electrolysis amount f, and is transferred to the processing by the woman's single training with the 165 (4), and flows between the electrode 124 and the workpiece 122 to work early. Electrochemical processing. Referring to the second figure, the switching unit 18 of the present invention has an input, an output port R, a first interface A and a second interface B. The input port of the switching unit:8 is connected to the output port (10) of the input unit 16, and the output port R of the 8 unit 18 is connected to one of the input ports (10) of the switching unit 18. The first end of the early replacement unit 18 is connected to the π Α connection of the transmission unit 16 - the first; the other end of the end 帛 144144097 is connected to the processing order form number A0101 page 7 / 23 pages Ai id 0098075457-0 201121682 A transmission port 126. The second interface B of the switching unit 18 is connected to one end of the second duct 167 of the transmission unit 16, and the other end of the second duct 167 is connected to the second transmission port 128 of the processing unit 12. In the above, the first transmission port 126 and the second transmission port 128 of the processing unit 12 are respectively connected to the first interface A and the second interface B of the switching unit 18, and the input port P of the switching unit 18 and the output port R are respectively connected. The output port 168 of the input unit 16 and the input port 169. Therefore, the processing unit 12, the switching unit 18 and the transport unit 16 are connected in series as an annular loop. The conveying unit 16 conveys the electrolyte 13 to the input port P of the switching unit 18 via the output port 168, and then transports the electrolyte 13 to the first transmission port 126 of the processing unit 12 through the first interface A and the first conduit 166, and flows into the The processing unit 12 flows between the electrode 124 and the workpiece 122. Thereafter, the electrolyte 13 flows out of the second transfer port 128 of the processing unit 12, and flows into the switching unit 18 through the second interface 167 and the second interface B of the switching unit 18 to pass through the output port R of the switching unit 18. The input port 169 of the transport unit 16 transports the electrolyte 13 back to the transport unit 16. The switching unit 18 switches the flow of the electrolyte 13 within the processing unit 12 after the processing unit 12 is electrochemically processed for a predetermined period of time. In this embodiment, the switching unit 18 performs transposition such that the input port P of the switching unit 18 is in communication with the second interface B, and the output port R of the switching unit 18 is in communication with the first interface A. The electrolyte 13 delivered by the transport unit 16 is transferred to the second transfer port 128 of the processing unit 12 via the input port P and the second interface B of the switching unit 18 to flow into the processing unit 12, and from the processing unit 12 A transfer port 126 flows out, so that the flow of the electrolyte 13 between the electrode 124 and the workpiece 122 is switched. The electrolyte 13 flowing out of the first transfer port 126 of the processing unit 12 is returned to the transport unit via the first interface A and the output 098144097 of the switching unit 18, Form No. A0101, page 8 of 23, 0982075457-0, 201121682, R. 16 storage slot 161. Referring to the second figure, the electrochemical processing apparatus of the present invention further includes a control unit 19 coupled to the switching unit 18 for controlling the switching time of one of the switching units 18, that is, the time for controlling the flow of the switching electrolyte 13. . In addition, the control unit 19 is further coupled to the power supply unit 19 to control the opening and closing of the power supply unit 14. Before the switching unit 18 switches the flow of the electrolyte 13 between the electrode 124 and the workpiece 122, the control unit 19 first turns off the power supply unit 14 to stop the supply of power, that is, to stop the electrochemical processing of the workpiece 122, thus delaying for a time. Thereafter, the switching unit 18 switches the flow direction of the electrolyte 133 between the electrode 124 and the workpiece 122. Since the electrolyte 13 undergoes a process of electrochemical processing, the electrolyte 13 generates a large amount of product 129 due to a long time reaction, that is, the electrolyte 13 is passivated, so that the power supply is stopped before the switching unit 18 switches the flow of the electrolyte 13. The electrochemical processing of the workpiece 122 is stopped to stop the reaction of the electrolyte 13 without continuing to generate the product 129, and the electrolyte 13 continues to flow, and the product 129 flows out of the processing unit 12. After the delay time, the control unit 19 then controls the switching unit 18 to switch the flow direction of the electrolyte 13. After the switching of the flow of the electrolytic liquid 13 is completed, the control unit 19 is further delayed for a time, the power supply unit 14 is activated to supply power, and the workpiece 122 is subsequently electrochemically processed. The present invention can prevent the passivating electrolyte 13 from affecting the processing efficiency and precision of electrochemical machining by the above-mentioned delay time. As can be seen from the above description, the present invention is an electrochemical processing apparatus for switching the flow of an electrolyte, which is connected to the workpiece 122 and the electrode 124 of the processing unit 12 by the power supply unit 14, and transports the electrolyte 13 into the processing unit via the conveying unit 16. 12 for electrochemical processing. After the electrochemical processing is performed for a predetermined period of time, the flow of the electrolyte 13 into the processing unit 12 is switched to 098144097. Form No. A0101, page 9 / 23 pages 0982075457-0 201121682, that is, the switching electrolyte 13 flows through the electrode 124 and the workpiece 122. The flow between the two. The electrochemical processing process repeatedly switches the flow direction of the electrolyte 13, thereby improving the processing quality and processing uniformity of the electrochemical processing, thereby achieving the purpose of increasing the processing precision and quality of the electrochemical processing. Referring to Fig. 4 and Figs. 5A to 5G together, a timing chart of a preferred embodiment of the control unit for controlling the power supply unit of the present invention and a schematic diagram of a process of switching the flow of the electrolyte are shown. As shown in FIG. 5A, when electrochemical processing is initially started, the electrolyte 13 flows into the processing unit 12 via the first transfer port 126, flows out of the processing unit 12 from the second transfer port 128, and flows back to the transfer unit 16, and is controlled. The unit 19 is shown as time T1 of the fourth figure, and the power supply unit 14 is activated for supplying power to electrochemically process the workpiece 122. Thereafter, as shown in FIG. 5B, since the workpiece 122 is electrochemically processed for a certain period of time, the electrolyte 13 generates a large amount of the product 129, and the electrolyte 13 starts to generate a passivation phenomenon, so the present invention switches the electrolyte 13 Before the flow, the control unit 19 turns off the power supply unit 14 and stops supplying power as shown in the T2 time of the fourth figure to temporarily stop the electrochemical processing, and delays the appropriate time to allow the electrolyte 13 to be in this section. The delay time flows out of the processing unit 12 via the second transfer port 128 to flow the product 0 129 out of the processing unit 12. Next, as shown in FIG. 5C, the control unit 19 controls the switching unit 18 to switch to switch the flow direction of the electrolyte 13, and allows the electrolyte 13 to flow into the processing unit 12 via the second transfer port 128, and is first The transfer port 126 flows out of the processing unit 12 and flows back to the transfer unit 16. At this time, the control unit 19 still turns off the power supply unit 14. After a suitable time delay, as shown in time T3 of the fourth figure, the control unit 19 turns on the power supply unit 14 to supply power, and as shown in FIG. 5D, performs electrochemical processing on the workpiece 1 2 2 098144097 A0101 Page 10 of 23 page 0982075457-0 201121682 ο . Thus, the flow of switching the flow direction of the electrolyte 13 is completed, and the present invention ensures that the product 129 flows out of the processing unit 12 by delaying the appropriate time, and ensures that the fresh and clean electrolyte 13 flows between the electrode 124 and the workpiece 122. To ensure the sharpness and processing quality and precision of the electrochemical processing of the workpiece 122. Then, as shown in the fifth diagram, after the electrolytic solution 13 is electrochemically processed for a while, a larger amount of product 129 is generated, and the resultant 129 causes the electrolyte 13 to be passivated. At this time, as shown in the fourth FIG. 4, before the flow of the electrolyte 13 is switched, the control unit 19 turns off the power supply unit 14 and stops supplying power to temporarily stop the electrochemical processing, and stops the generation of the product 129, and borrows. The electrolyte 13 continues to flow out of the processing unit 12 via the first transfer port 126, and the product 129 flows out of the processing unit 12. Further, as shown in FIG. F, the control unit 19 controls the switching unit 18 to switch the flow direction of the electrolyte 13 while the electrolyte 13 is delivered to the processing unit 12 via the first transfer port 126, and flows out of the second transfer port 128. The processing unit 12 is returned to the transport unit 16. At this time, the power supply unit 19 is still in the off state. After a delay, as shown in the fourth figure Τ5, the control unit 19 turns on the power supply unit 14 to supply power, and as shown in the fifth G diagram, the connection is continued. The workpiece 122 is electrochemically processed. In the above, the fifth G diagram is the same as the fifth diagram, which represents the reincarnation to the initial machining operation, and continues the processing flow previously described. The electrochemical processing method for switching the flow direction of the electrolyte of the present invention, that is, the processing flow as described above, is repeated. Thus, the present invention can prevent the passivated electrolyte 13 from acting on a specific region of the workpiece 122 for a long time, so that the processed surface of the workpiece 122 near the first transfer port 126 and the second transfer port 128 will contact the fresh electrolyte 13 Can lift a large area of workpiece 122 to 098144097 Form No. A0101 Page 11 / Total 23 page 0982075457-0 201121682 Uniformity of electrochemical machining and surface quality. As can be seen from the above description, the present invention can prevent the electrolyte material 13 from being subjected to electrochemical processing for a longer period of time, and the more products 129 are generated therein, resulting in poor processing surface quality of the workpiece 122 subjected to electrochemical processing, and processing uniformity. Poor and other situations. In summary, the present invention is an electrochemical processing apparatus and method for switching electrolyte flow, comprising a processing unit, a power supply unit, a conveying unit and a switching unit for processing a workpiece, the processing unit is provided with an electrode, and the electrolyte flows through Between the electrode and the workpiece, the workpiece is processed, and the two poles of the power unit are respectively connected to the electrode and the workpiece, the conveying unit transports the electrolyte into the processing unit, and the switching unit is connected between the conveying unit and the processing unit to switch the electrolyte flow. Through the flow direction between the electrode and the workpiece, the specific region of the workpiece (for example, the surface of the workpiece close to the first transfer port or the second transfer port of the processing unit) can be prevented from being in the purified electrolyte processing state for a long time, thereby being improved. Electrochemical machining accuracy and processing quality. Therefore, the present invention is a novelty, progressive and available for industrial use. It should be in accordance with the patent application requirements of China's patent law. Undoubtedly, the invention patent application is filed according to law, and the Prayer Council has granted patents as soon as possible. . However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, so that the shapes, structures, features, and spirits described in the claims of the present invention are equally changed. Modifications are intended to be included in the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS [0005] The first figure is a schematic diagram of conventional electrochemical machining for processing a large-area workpiece; the second figure is one of the electrochemical processing devices for switching the electrolyte flow direction of the present invention 098144097 Form No. A0101 12 pages/total 23 pages 0 201121682 A schematic diagram of a preferred embodiment; a third diagram is a schematic diagram of a preferred embodiment of the processing unit of the present invention; and a fourth diagram is a preferred embodiment of the control unit control power supply unit of the present invention The timing diagram of the example; and the fifth to fifth G diagrams are schematic diagrams of the flow direction of the electrolyte in the process of switching the flow of the electrolyte according to the preferred embodiment of the present invention.
098144097 [0006] 1 電極 3 電解液 5 工件 7 生成物 12 加工單元 122工件 124 電極 126 第一傳輸口 128第二傳輸口 129生成物 13 電解液 14 電源單元 16 輸送單元 161 儲存槽 163 過濾單元 165 馬達 166 第一導管 167 第二導管 168 輸出口 表單编號A0101 第13頁/共23頁098144097 [0006] 1 Electrode 3 Electrolyte 5 Workpiece 7 Product 12 Processing unit 122 Workpiece 124 Electrode 126 First transfer port 128 Second transfer port 129 Product 13 Electrolyte 14 Power supply unit 16 Transfer unit 161 Storage tank 163 Filter unit 165 Motor 166 First conduit 167 Second conduit 168 Output port Form number A0101 Page 13 of 23
0982075457-0 201121682 169 輸入口 18 切換單元 19 控制單元 P 輸入口 R 輸出口 A 第一接口 B 第二接口0982075457-0 201121682 169 Input port 18 Switching unit 19 Control unit P Input port R Output port A First interface B Second interface
098144097 表單編號A0101 第14頁/共23頁 0982075457-0098144097 Form No. A0101 Page 14 of 23 0982075457-0