200800451 九、發明說明： 【發明所屬之技術領域】 本發明是有關於放電加工之電極夾具，特別是指一種 操作簡便、定位穩固且適用於不同形狀電極之夾具結構。 【先前技術】 按，在塑膠射出模具的製造加工流程中，成型放電乃 業界公認最耗費時間且使用最頻繁的一個加工過程，所謂 放電加工，其乃係以一電極與待加工模具相互往復滑移而 不斷的重覆接觸、分離等動作，配合電流的通過而使電極 與模具產生高溫熔解並立即氣化，由於一般電極的材質爲 銅，其導電性較一般塑膠射出模具的鐵材爲好，所以模具 的損耗會比較多，藉以於模具上成型出所需要的形狀及尺 寸；然而，目前對於放電加工之電極夾持固定，雖有專爲 固定品牌之放電加工機具所設計之電極夾具，但其購買時 必須由國外進口整套 系統’由於台灣目前塑膠射出模具的製造多係委外加工， 且其整體系統價格昂貴，致使業界之使用普及率不高。 基於上述原因，目前大部份的模具製造業者在放電加 工時’仍只能依賴傳統的「快乾」、「攻牙鎖螺絲」以及 「虎鉗或鑽頭束夾」來固定電極，但這些方式只能針對特 定的電極形狀而使用，且其均有嚴重之缺失，致使在放電 作業的流程中’光是耗費在電極的固定就相當麻煩，且其 不穩定性更可能對模具的重要零件造成損壞，針對上述各 種傳統之電極固定方式，茲分述如下： 1·傳統虎鉗夾持電極之固定方式：由於傳統虎鉗的夾持行 程與其寬度比約爲3 : 2，亦即若要夾持的寬度135mm 之電極’則傳統虎鉗的寬度將約有100mm，如此一來， 200800451 不但笨重且因此寬度太大，但尺寸較小的電極在使用上 將會有很多限制，例如：電極與模具在尋中心時或模具 表面筒低落差較大時，其雖可藉由增加電極長度或更換 較小尺寸的虎鉗來克服，但一般放電加工業者只是替客 戶代工’其模具與電極均由客戶提供，而客戶一般並不 會替加工業者考慮到這方面的問題，況且電極的尺寸加 長也會增加其製作成本（材料費與工資均增加），若考 慮更換虎鉗，則表示加工者光是要夾持矩形的電極就必 須準備很多種規格的虎鉗，何況矩形的電極其外圍可供 夾持的地方常常並無直角或平行部位，表面又粗糙（如 CNC銑床所製作的電極），故而，傳統虎鉗的夾持效果 並不好，萬一在放電加工過程中，其電極因夾持不住產 生移動脫落，將會對模具產生無法補救的損壞！ 再者，於放電加工過程中，必須有放電加工液不斷 的沖刷電極與模具的接觸面，以將放電時所產生的氧化 物排除，一但氧化物排除不及則可能因過度聚集的氧化 物累積在模具與電極的接觸面，而產生快速累積，造成 「積碳」，尤其是針對於圓形電極（通常是用來製作注 料孔，其特徵是又小又深，非常容易'積碳〃），若以 傳統虎鉗夾持，則其必須用放電加工機所配備的油管來 對準電極與模具的接觸面噴油沖刷，此種方式之淸除效 果有限，仍然常會有「積碳」或排屑（氧化物）效果不 佳而造成加工不順的情形。 另有一種長條狀的電極，稱爲「薄片」（Rib )， 一般使用時有固定的規格可購買，再依模具的設計來製 作另一方向的形狀；若加工後的電極長度大於80mm以上 時，則其將非常容易捲曲，若長度大於200mm以上（甚 200800451 至300mm )時，則必須用很大的虎鉗來夾持，才有足夠 的夾持面將電極夾直，但通常放電用的虎鉗並沒有如此 大的規格。 2. 攻牙鎖螺絲固定：乃係將電極的成品面（與模具接觸面 )的相對面鑽孔、攻牙，並用螺絲固定在一特殊的導電 桿上，如先前所述，一般電極是由客戶所提供’而提供 電極的客戶可能並未考慮到攻牙作業時，而加工業者卻 無其它適用的固定方式時’只能於電極的背面補鑽孔 ，如此一來，不但有傷害電極已完成的成品面的風險’ 更可能造成進度延遲落後。 此外，由於國際銅價飆漲，而鑽孔將會造成電極無 法翻面再利用，無形中形成浪費；而當電極的尺寸約大 於一^包煙的尺寸時，則可能需要有二螺孔來固疋’而這 二螺孔的距離萬一與加工業者所擁有的工具不符時’則 又形成另一個難題。 3. 快乾（快速接著劑）固定：在實務加工上’經常將尺寸 較小的電極以快乾黏於導電圓桿上，即可以導電圓桿固 定於放電機的機頭上’以進行放電加工’但其前提是電 極不可太重，否則可能黏不住，一但加工過程中電極掉 落下來，即可能損壞了（因銅比鐵軟），同時’快乾在 遇到較高的溫度時（放電之瞬間溫度有時會超過快乾所 能承受的範圍）可能會變質，使得電極脫落。 此外，使用快乾來黏著電極與導電圓桿時’有時會 造成電極與導電圓桿的導電不良’甚至絕緣而無法進行 放電；再者，使用快乾還有一項缺點’就是當放電加工 完成而將電極與導電圓桿分離後’電極的表面將遺留些 許的快乾污漬，若下次還須再次用到同一個電極時’光 200800451 是要將舊的快乾污漬去除而不能傷到電極，將會費一翻 - 手腳，相當麻煩。 有鑑於習見放電加工之電極固定方式及其結構有上述 _ 之缺點，發明人乃針對該些缺點硏究改進之道，終於有本 發明產生。 【發明内容】 本發明之主要目的在於提供一種放電加工之電極夾具 ，其可適用於任何形狀、尺寸電極之固定，並突破傳統方 式所無法實施之應用場合，具有廣泛的適用範圍。 ρ 本發明之另一目的在於提供一種放電加工之電極夾具 ，其組裝簡便且定位穩固，可有效提升加工的穩定性、效 率及精準度。 本發明爲達成上述目的及功效，其所採行的技術手段 包括：一基座，可固定於放電機之機頭上，於該基座之頂 面設有一開口槽，於該開口槽一端側設有一凸起之側夾部 ，且該側夾部頂側設有一縱向延伸之定位插槽，而於該側 夾部中段貫設一同方向延伸之噴油孔；一螺桿，水平貫通 於該基座之開口槽內；一滑塊，設於該基座之頂面，且以 • 其一部份伸入該開口槽內螺套於該螺桿，使該滑塊可隨螺 桿之轉動而產生相對於基座之側夾部往復滑移運動，而於 •該滑塊頂側設有一定位插槽對應於該側夾部之定位插槽。 至於本發明之詳細構造、應用原理、作用與功效，則 參照下列依附圖所作之說明即可得到完全的瞭解： 【實施方式】 第1圖係本發明之組合外觀圖，由其參照第2圖之構 造分解圖及第3圖之組合剖面圖，可以很明顯地看出，本 發明主要包括··基座1、螺桿2及滑塊3等部份，其中該 200800451 基座1於底面及旁側面分別設有複數下固定螺孔11、側 固疋螺孔1 2 ’可供預設之螺栓將該基座1之底面或側面 固定於放電機之機頭上，藉以形成一正置或一側置之結合 狀態，於該基座1之頂面設有一開口槽1 6，且於該開口 槽1 6 —旁側設有一凸起之側夾部13,而開口槽16之 底面則設有一貫通該基座1之通孔1 6 1，另於該側夾部 1 3頂側設有一與開口槽1 6同向延伸之定位插槽1 3 5 ，並於該定位插槽1 3 5旁側橫設有至少一電極固定螺孔 1 3 4 ’而該側夾部1 3中段另橫向貫設一噴油孔1 3 3 ，該噴油孔1 3 3外旁側設有一內螺紋1 3 3 1，可供一 注油嘴1 4以預設之外螺紋1 4 1螺入結合，螺桿2係水 平貫通於該基座1之通孔1 6 1內，其一端結合一周緣設 有壓花2 1 1之驅動旋鈕2 1，且於該驅動旋鈕2 1外邊 側另設有一六角扳手插槽2 1 2，以便於與外部工具結合而 驅動該螺桿2轉動，而於螺桿2之另一端則可螺套一螺帽 2 2 ’可配合該驅動旋鈕2 1而使螺桿2與基座1結合， '滑塊3係設於該基座1頂側表面，其一部份係伸入基座1 之開口槽1 6內並設有一螺孔3 6，可螺套於該螺桿2中 段’於該滑塊3頂側設有一定位插槽3 5對應於該側夾部 1 3之定位插槽1 3 5，且於該定位插槽3 5旁側橫設有 至少一電極固定螺孔3 4 ;上述結構中’該基座1之側夾 部13與該滑塊3分別於相對之夾持面上設有一垂直延伸 之V形凹口1 5及一呈鋸齒狀斷面之鋸齒夾持面3 3，且 於各夾持面周緣底側設有向內斜伸之二彈性切槽131、 3 1，於夾持面周緣頂側則設有凹陷之二凹缺口1 3 2、 3 2，使該二夾持面於受力後具適當之壓縮彈性。 第4圖係本發明之操作動作示意圖，由其參照第5至 200800451 7圖之夾持物件或不同形狀電極之實施例圖，可知該滑塊 ， 3可隨螺桿2之轉動而產生相對於側夾部1 3往復滑移運 動（如第4圖所示）；當該滑塊3靠近於基座1之側夾部 ' 1 3，其可利用該鋸齒夾持面3 3配合側夾部1 3對應之 夾持面而可夾合一較寬大之物件4 (如第5圖所示）；而 若以該滑塊3之定位插槽3 5配合側夾部1 3之定位插槽 1 3 5，則可容置一長片狀電極5，並藉由複數固定螺栓 5 1、5 2分別貫穿該滑塊3之電極固定螺孔3 4及側夾 部1 3之電極固定螺孔1 3 4，以固定該長片狀電極5 ( • 如第6圖所示），由於該定位插槽3 5、1 3 5係位於相 對應銜接之位置，因此，若該長片狀電極5長度實在太長 ，造成中段部位仍有彎曲情形時，則可將驅動旋鈕2 1逆 向旋轉，使螺桿2驅動滑塊3遠離側夾部1 3，以將彎曲 的部份拉直；若以該滑塊3之鋸齒夾持面3 3配合側夾部 1 3之V形凹口 1 5，則可容置一圓柱形電極6形成三點 接觸，其可確實而穩固地定位該圓柱形電極6(如第7圖 所示）；而無論是夾持長片狀電極5或圓柱形電極6，其 於放電加工時，該放電加工液皆可由注油嘴1 4進入，並 • 由噴油孔1 3 3噴出，以完整包覆電極，達到最佳之加工 效果。 本發明之上述結構，其可廣泛地適用於不同態樣之電 極夾持，且皆可穩固夾持固定，具有應用上之廣泛性及便 利性，同時，其於實際應用上具有下列優點： 1. 寬度小、夾程大、重量輕；使用上可取代大大小小的各 式虎鉗。 2. 夾持面有齒狀設計，輔以彈性結構，不論電極的表面是 否平整，均可產生極強的固定力道。 200800451 3.特別設計的油路與V型夾槽結合，不但垂直放電時可令 - 放電加工液完整包覆電極，連側放時亦可完美包覆，並 強力沖刷氧化物，其排屑效果絕非傳統虎鉗或鑽頭束夾 * 形態所可比擬！ 由上所述可知，本發明放電加工之電極夾具·確實具有 操作簡便、定位穩固且適用於不同形狀電極之功效，確已 符合發明專利之新穎、性及進步性要件。 惟以上所述者，僅爲本發明之一較佳實施例而已，並 非用來限定本發明實施之範圍。即凡依本發明申請專利範 • 圍所作之均等變化與修飾，皆爲本發明專利範圍所涵蓋。 【圖式簡單說明】 第1圖係本發明之組合外觀圖。 第2圖係本發明之構造分解圖。 第3圖係本發明之組合剖面圖。 第4圖係本發明之操作動作示意圖。 第5圖係本發明夾持較寬大物件之實施例圖。 第6圖係本發明夾持扁平狀電極之實施例圖。 第7圖係本發明夾持圓柱形電極之實施例圖。 • 【主要元件符號說明】 I. …..基座 II. ...下固定螺孔 12.. ..側固定螺孔 13.. …側夾部 131、 31...彈性切槽 132、 32. . ·凹缺口 133.. .噴油孔 1331.. 內螺紋 11 200800451 134、 34...電極固定螺孔 135、 35...定位插槽 14.. ..注油嘴 141, ..外螺紋 15. · ..V形凹口 16. · ..開口槽 161· ..通孔 2… ..螺桿 21,. ..驅動旋鈕 211 · ..壓花 212. ..六角扳手插槽 22.. ..螺帽 3··· ..滑塊 33.. ..鋸齒夾持面 36. · ..螺孔 4··· ..物件 5… ..長片狀電極 51 ^ 52....固定螺栓 • 6.....圓柱形電極200800451 IX. Description of the Invention: [Technical Field] The present invention relates to an electrode fixture for electrical discharge machining, and more particularly to a clamp structure that is simple in operation, stable in positioning, and suitable for electrodes of different shapes. [Prior Art] According to the manufacturing process of plastic injection molds, molding discharge is recognized as the most time-consuming and frequently used process in the industry. The so-called electric discharge machining is to reciprocate with an electrode and a mold to be processed. The action of repeated contact and separation is repeated, and the electrode and the mold are melted at a high temperature and immediately vaporized by the passage of current. Since the material of the general electrode is copper, the conductivity is better than the iron of the general plastic injection mold. Therefore, the loss of the mold will be more, so that the required shape and size can be formed on the mold; however, the electrode for the electric discharge machining is currently fixed, although there is an electrode fixture designed for a fixed-brand EDM machine, but At the time of purchase, the whole system must be imported from abroad. 'Because Taiwan's current plastic injection molds are manufactured in many ways, and the overall system is expensive, the penetration rate of the industry is not high. For the above reasons, most of the mold manufacturers currently rely on the traditional "quick-drying", "tapping screw" and "tack or bit bundle clamp" to fix the electrode during electrical discharge machining, but these methods It can only be used for specific electrode shapes, and it has serious defects, so that in the process of discharge operation, it is quite troublesome to fix the electrode, and its instability is more likely to cause important parts of the mold. Damage, for the above various conventional electrode fixing methods, are described as follows: 1) The traditional vise clamping electrode fixing method: because the traditional vise clamping stroke and its width ratio is about 3: 2, that is, to clip The electrode with a width of 135mm will have a width of about 100mm for the traditional vise. As a result, 200800451 is not only cumbersome and therefore too wide, but the smaller size electrode will have many limitations in use, such as: electrode and When the mold is looking for the center or when the mold surface cylinder has a large drop difference, it can be overcome by increasing the length of the electrode or replacing the smaller size vise, but the general discharge processing industry. Just for the customer's OEM's mold and electrode are provided by the customer, and the customer generally does not consider this issue for the processing industry, and the length of the electrode will increase its production costs (material costs and wages increase) If you consider replacing the vise, it means that the processor needs to prepare a variety of vises to hold the rectangular electrode. What is more, the rectangular electrode has no right angle or parallel part at the periphery. Rough (such as the electrode made by CNC milling machine), the traditional vise clamping effect is not good, in the event of electric discharge machining, the electrode can not move due to clamping, it will not be able to mold Remedy damage! Furthermore, during the electrical discharge machining process, the discharge machining fluid must continuously flush the contact surface between the electrode and the mold to remove the oxide generated during the discharge, and if the oxide is not removed, the oxide may accumulate due to excessive accumulation. At the contact surface of the mold and the electrode, rapid accumulation occurs, resulting in "carbon deposition", especially for circular electrodes (usually used to make injection holes, which are characterized by small and deep, very easy to 'carbon deposits' ), if it is clamped by a traditional vise, it must use the oil pipe equipped with the electric discharge machine to align the fuel injection surface of the contact surface between the electrode and the mold. In this way, the effect of the removal is limited, and there is often a carbon deposit. Or the effect of chipping (oxide) is not good and the processing is not smooth. Another type of strip-shaped electrode, called "sheet" (Rib), can be purchased with a fixed specification for general use, and the shape of the other direction can be made according to the design of the mold; if the length of the processed electrode is greater than 80mm or more In time, it will be very easy to curl. If the length is more than 200mm (especially 200800451 to 300mm), it must be clamped with a large vise, so that there is enough clamping surface to clamp the electrode straight, but usually discharge The vise does not have such a large size. 2. Tapping lock screw fixing: the opposite side of the finished surface of the electrode (the contact surface with the mold) is drilled, tapped, and screwed to a special conductive rod. As mentioned earlier, the general electrode is Customers who provide the 'electrode' may not consider the tapping operation, but the processing industry does not have other suitable fixing methods. 'On the back side of the electrode can only be drilled, so that not only the damage electrode has been The risk of finished finished surfaces is more likely to cause delays in progress. In addition, because the international copper price soars, the drilling will cause the electrode to fail to turn over and reuse, which will form waste in the invisible; when the size of the electrode is larger than the size of a package of cigarettes, it may be necessary to have two screw holes to fix疋 'And the distance between the two screw holes is inconsistent with the tools owned by the processing industry', which creates another problem. 3. Quick-drying (fast adhesive) fixing: In practical processing, 'the electrode with smaller size is often fast-drying and adhered to the conductive round rod, that is, the conductive round rod can be fixed on the head of the discharge machine' for electric discharge machining. 'But the premise is that the electrode should not be too heavy, otherwise it may not stick. Once the electrode falls during processing, it may be damaged (because copper is softer than iron), and 'quick dry when encountering higher temperature (The temperature at which the discharge will sometimes exceed the range that can be withdrawn by rapid drying) may deteriorate, causing the electrode to fall off. In addition, the use of quick-drying to adhere the electrode and the conductive round rod 'sometimes cause poor electrical conduction between the electrode and the conductive round rod' is even insulated and cannot be discharged; further, there is a disadvantage in using fast drying, that is, when the electric discharge machining is completed After separating the electrode from the conductive round rod, the surface of the electrode will leave some quick-drying stains. If the same electrode is needed again next time, the light 200800451 is to remove the old quick-drying stains without hurting the electrodes. It will cost me a turn - hands and feet, quite troublesome. In view of the above-mentioned drawbacks of the electrode fixing method and the structure of the electric discharge machining, the inventors have made improvements to these disadvantages, and finally the present invention has been produced. SUMMARY OF THE INVENTION The main object of the present invention is to provide an electrode holder for electric discharge machining, which can be applied to the fixing of electrodes of any shape and size, and which can overcome the application that cannot be implemented by the conventional method, and has a wide range of application. ρ Another object of the present invention is to provide an electrode holder for electric discharge machining, which is easy to assemble and stable in positioning, and can effectively improve the stability, efficiency and precision of processing. In order to achieve the above object and effect, the technical means adopted by the present invention include: a base fixed to the head of the discharge machine, and an open groove on the top surface of the base, and one end side of the open groove a protruding side clamping portion, and a top extending side of the side clamping portion is provided with a longitudinally extending positioning slot, and a fuel hole extending in the same direction is arranged in a middle portion of the side clamping portion; a screw horizontally penetrates the base portion a sliding slot is disposed on the top surface of the base, and a portion thereof extends into the opening slot to be screwed to the screw, so that the slider can be rotated relative to the screw The side clamping portion of the base reciprocates and slides, and a positioning slot corresponding to the positioning slot of the side clamping portion is disposed on the top side of the slider. With regard to the detailed structure, application principle, function and effect of the present invention, a complete understanding can be obtained by referring to the following description of the drawings: [Embodiment] FIG. 1 is a combined appearance view of the present invention, which is referred to FIG. It can be clearly seen from the structural exploded view and the combined sectional view of FIG. 3 that the present invention mainly includes a base 1, a screw 2 and a slider 3, wherein the base of the 200800451 is on the bottom and the side. The side is respectively provided with a plurality of fixed screw holes 11 and side solid screw holes 1 2 '. The bottom surface or the side surface of the base 1 can be fixed to the head of the discharge machine by a predetermined bolt to form a front or a side. In the combined state, an open slot 16 is formed on the top surface of the base 1, and a convex side clip portion 13 is disposed on the side of the open slot 16 6 , and a bottom surface of the open slot 16 is provided with a through hole. The through hole 161 of the base 1 is further provided with a positioning slot 1 3 5 extending in the same direction as the opening slot 16 on the top side of the side clamping portion 1 3 , and is located beside the positioning slot 1 3 5 At least one electrode fixing screw hole 1 3 4 ′ is horizontally disposed, and the oil collecting hole 1 is transversely disposed in the middle portion of the side clamping portion 1 3 3 3 , the outer side of the fuel injection hole 1 3 3 is provided with an internal thread 1 3 3 1, for a grease fitting 14 to be screwed into and combined with a predetermined external thread 141, and the screw 2 is horizontally penetrated by the base In the through hole 1 6 1 of the seat 1, one end of the driving knob 2 is provided with a driving knob 2 1 of embossing 2 1 1 , and a hexagonal wrench slot 2 1 2 is further provided on the outer side of the driving knob 2 1 , so as to facilitate In combination with an external tool, the screw 2 is driven to rotate, and at the other end of the screw 2, a nut 2 2 ' can be screwed into the drive knob 21 to engage the screw 2 with the base 1, 'slider 3 It is disposed on the top side surface of the base 1 and a portion thereof extends into the open slot 16 of the base 1 and is provided with a screw hole 3 6 which can be screwed into the middle portion of the screw 2 on the top side of the slider 3 A positioning slot 35 is provided corresponding to the positioning slot 135 of the side clip portion 13 and at least one electrode fixing screw hole 3 4 is laterally disposed on the side of the positioning slot 35; The side clamp portion 13 of the base 1 and the slider 3 are respectively provided with a vertically extending V-shaped recess 15 and a serrated clamping surface 33 in a zigzag cross section on the opposite clamping surfaces. Bottom side of the periphery of the clamping surface The two elastic slits 131, 3 1 which are inclined inwardly are provided with concave recesses 1 3 2, 3 2 on the top side of the periphery of the clamping surface, so that the two clamping surfaces are appropriately compressed after being pressed. elasticity. Figure 4 is a schematic view of the operation of the present invention. Referring to the embodiment of the clamped article or the electrode of different shapes according to Figures 5 to 200800451, it can be seen that the slider 3 can be generated relative to the side with the rotation of the screw 2. The clip portion 13 reciprocates the sliding motion (as shown in FIG. 4); when the slider 3 is close to the side clamp portion '1 3 of the base 1, the serration clamping surface 3 3 can be used to cooperate with the side clamp portion 1 3 corresponding clamping surface can be combined with a relatively wide object 4 (as shown in FIG. 5); and if the positioning slot 35 of the slider 3 is engaged with the positioning slot 13 of the side clamping portion 13 5, a long sheet electrode 5 can be accommodated, and the screw fixing hole 3 3 of the slider 3 and the electrode fixing screw hole 1 3 of the side clamping portion 13 are respectively inserted through the plurality of fixing bolts 5 1 and 5 2 . 4, in order to fix the long sheet electrode 5 (as shown in Fig. 6), since the positioning slots 35, 135 are located at corresponding positions, if the length of the long sheet electrode 5 is If it is too long, if the middle part is still bent, the drive knob 21 can be reversely rotated, so that the screw 2 drives the slider 3 away from the side clamp 13 to bend the curved part. Straight; if the serration clamping surface 3 3 of the slider 3 is matched with the V-shaped recess 15 of the side clamping portion 13 , a cylindrical electrode 6 can be accommodated to form a three-point contact, which can be stably and stably positioned. The cylindrical electrode 6 (as shown in Fig. 7); whether the long sheet electrode 5 or the cylindrical electrode 6 is clamped, the discharge machining fluid can be entered by the grease nipple 14 during electrical discharge machining, and It is sprayed from the oil injection hole 133 to completely cover the electrode to achieve the best processing effect. The above structure of the present invention can be widely applied to electrode clamping of different aspects, and can be stably clamped and fixed, has wide application and convenience, and has the following advantages in practical applications: The utility model has the advantages of small width, large clamping range and light weight; the utility model can replace various vises of various sizes. 2. The clamping surface has a toothed design, supplemented by an elastic structure, which can produce a strong fixing force regardless of whether the surface of the electrode is flat or not. 200800451 3. The specially designed oil circuit is combined with the V-shaped clamping groove. Not only can the discharge machining liquid completely cover the electrode when it is vertically discharged, but also can be perfectly coated even when placed on the side, and the oxide is strongly washed, and the chip removal effect is obtained. Not a traditional vise or a drill band clamp* is comparable! As can be seen from the above, the electrode fixture for electric discharge machining of the present invention has the advantages of simple operation, stable positioning, and application to electrodes of different shapes, and has indeed met the novelty, sexuality, and progressive requirements of the invention patent. 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. That is, the equivalent changes and modifications made by the patent application scope of the present invention are covered by the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a combined appearance view of the present invention. Figure 2 is an exploded view of the structure of the present invention. Figure 3 is a combined cross-sectional view of the present invention. Figure 4 is a schematic view of the operation of the present invention. Fig. 5 is a view showing an embodiment of the present invention for holding a relatively wide object. Fig. 6 is a view showing an embodiment of the present invention for sandwiching a flat electrode. Fig. 7 is a view showing an embodiment of the present invention for clamping a cylindrical electrode. • [Main component symbol description] I. ..... pedestal II. ... lower fixing screw hole 12... side fixing screw hole 13.. side clamping portion 131, 31... elastic grooving 132, 32. . . concave notch 133.. . injection hole 1331.. internal thread 11 200800451 134, 34... electrode fixing screw hole 135, 35... positioning slot 14 .. .. grease fitting 141, .. External thread 15. ·..V-shaped notch 16. ·..Opening groove 161·..through hole 2..... screw 21,...drive knob 211 ·..embossing 212...hex wrench socket 22.. .. Nut 3··· .. Slider 33.. .. Serrated clamping surface 36. ·.. Screw hole 4··· .. Object 5... Long slide electrode 51 ^ 52. ...fixing bolts • 6..... cylindrical electrodes