200914173 九、發明說明： 【發明所屬之技術領域】 本發明係有關使用於深孔加工之槍管鑽。 【先前技術】 作爲深孔加工方式，習知雖有槍管鑽方式' 頂出具 (ejector)方式（雙管方式）、單管方式等種種方式，但直徑 小的深孔加工則以槍管鑽方式爲適當。即，槍管鑽方式， 如第1 1圖所示，於透過側面之V字形溝1 1橫剖面爲2 / 3〜3/ 4圓形之中空柄1的前端，使用將同樣橫剖面外形之 切削頭2固定的槍管鑽G，將被導入基部側之筒狀驅動器3 的冷卻劑C ’通過中空柄1的內部而從切削頭2尖端面之 冷卻劑放出口 2 1 ’ 一面供應切削部位一面進行切削，同時 能將隨著此切削而產生的切屑S與冷卻劑C 一起通過V字 形溝1 1而排出外部’即使切削孔Η變深時，因爲冷卻劑C 的輸送壓係依據工具的長度而決定，所以適合小直徑的深 孔加工。此外，在第1 1圖’ 4係夾住筒狀驅動器3而使其 旋轉驅動的心軸’ 5係成爲切屑s與冷卻劑C之排出部的 切屑箱’ 6係在切屑箱5之前壁側與工件w的端面之間外 嵌於中空柄1之引導套筒，7係在切屑箱5之後壁側外嵌於 中空柄1的V字形溝1 1閉塞的塡封材料。 第1 2圖~第1 4圖係顯示習知之—般槍管鑽〇的例。如圖 所示’中空柄1 ’係藉由管材料的切割加工或輥子加工等， 於外面沿著長度方向從前端1 a至後端部1 b的前面形成V 字形溝1 1 ’爲了將接合面積變大’在相對應於被切割成V 字形的前端1 a上’被形成反V字形之切削頭2的基端部被 200914173 熔接固定，一方面將無V字形溝1 1之後端部1 b插嵌於筒 狀驅動器3的柄插入孔31，透過其插嵌部的硬焊而固定於 該筒狀驅動器3。在此中空柄1的後端部lb無V字形溝11， 乃爲了防止導入筒狀驅動器3內之冷卻劑C(參考第1 1圖） 通過V字形溝1 1而漏出外部所必然的。然而，切削頭2， 係於內部具有連通中空柄1內之冷卻劑供應路1 0的冷卻劑 通路20，同時該冷卻劑通路20在尖端面2a作爲冷卻劑放 出口 21而開口，又在圓周面涵蓋形成全長與中空柄1的V 字形溝1 1連接之V字形溝22，面臨此V字形溝22之前端 緣形成刀刃23。此外，在第12(B)圖，箭頭符號a係表示 工具旋轉方向，V字形溝22的開啓角度0 (與V字形溝1 1 的開啓角度相同）被設定爲90~130°的範圍，在通常係爲 1 10~ 120°左右。 【發明內容】 〔發明所欲解決之課題〕 作爲此種槍管鑽G，即使所適用之切削口徑相同’仍然 要使用適應切削深孔之深度所應具有的長度’所以依各工 具直徑（切削口徑）有必要不同之複數種的工具長度°例 如，一般工具直徑爲5mm時，工具長度（全長）有250、 400、600 ' 800、1000、1 200mm的6種左右，工具直徑爲 10~15mm 時，一般工具長度有 500、600、800、1〇〇〇、1200 ' 1400、1650mm的7種左右，此等工具長度的不同可改變中 空柄1的長度而被設定。可是，製造相同工具直徑而長度 相異之複數種的槍管鑽時，中空柄1，因爲如上述有需要 將後端部1 b成爲無V字形溝1 1的區域’所以無法從預先 200914173 涵盡全長形成V字形溝丨丨之長條的管材料切斷而獲得。 因此在過去，欲製作同徑而長度相異之複數種的中空柄 1時，或者是採用配合工具長度而切斷之管材料而在後加 工形成V字形溝n ’或者是事先整齊切成一定長度之管材 料形成V字形溝1丨後，而配合工具長度切斷的方法。然而， 在前者的方法，無法將後加工之v字形溝丨丨的形成總括起 來進行，因爲有需要配合管材料的長度而改變加工條件， 所以浪費加工及時間以至效率非常差，製作成本也高昂。 又，後者的方法，雖然以同樣的加工條件可進行v字形溝 11的形成，但欲加工之管材料成爲需配合最長的工具長 度，所以欲適用更短的工具長度之中空柄丨時’由於切斷 而不要的短材料大量的發生，所以花費高材料成本同時從 省資源的觀點間題也大。 本發明有鑒於上述情況’目的在提供作爲槍管鑽，爲了 適用於相同工具直徑而工具長度不同的複數種槍管鑽，將 同徑而長度不同的中空柄，藉由切斷從預先涵蓋全長設置 有V字形溝的長條原料，既不會發生大量的不要短材料， 又可獲得高效率且容易以低成本製作者。 〔用以解決課題之手段〕 爲了達成上述目的的手段若附上圖式的參考符號表示 時’申請專利範圍第1項之發明，係一種槍管鑽，由沿 著外面的長度方向具有切屑排出用之V字形溝 柄1 ;將此中空柄1之後端部1 b插嵌固定的筒狀驅動器 3 :及被固定該於中空柄1之前端1 a的切削頭2所構成， 將被導入筒狀驅動器3之冷卻劑C通過中空彳丙丨θ胃& 200914173 切削頭2之前端的冷卻劑放出口 2 1供應到切削部位，與 切屑S —起藉由該V字形溝11而排出，其特徵在於： 該中空柄1涵蓋其全長具有該V字形溝11，同時在插嵌 於該中空柄1之筒狀驅動器3內的後端部lb，固定有埋入 該V字形溝1 1而閉塞的溝閉塞片8。 申請專利範圍第2項之發明，係在該申請專利範圍第1 項之槍管鑽中，溝閉塞片8被設定比中空柄1之筒狀驅動 器3內的插嵌部更長。 申請專利範圍第3項之發明，係在該申請專利範圍第1 項之槍管鑽中，溝閉塞片8被硬焊在中空柄1的V字形溝 1 1，同時該中空柄1的後端部1 b被硬焊於筒狀驅動器3的 柄插入孔3 1。 申請專利範圍第4項之發明，係在該申請專利範圍第1 項之槍管鑽中，溝閉塞片8被硬焊在中空柄1的V字形溝 1 1，同時形成螺絲孔32貫通於筒狀驅動器3的前部側內 外，而建構成將插嵌於該筒狀驅動器3之柄插入孔31的中 空柄1後端部lb，透過螺插於該螺絲孔32a之鎖緊螺絲32b 向溝閉塞片8壓接而予以固定。 又，申請專利範圍第5項之發明，係一種槍管鑽，由沿 著外面的長度方向具有切屑排出用之V字形溝11的中空柄 1;將此中空柄1之後端部lb插嵌固定的筒狀驅動器3;及 被固定於該中空柄1之前端la的切削頭2所構成，將被導 入筒狀驅動器3之冷卻劑C通過中空柄1內而從切削頭2 之尖端的冷卻劑放出口 2 1供應到切削部位，與切削粉S — 起藉由該V字形溝11而排出，其特徵在於： 200914173 該中空柄1涵蓋其全長具有該V字形溝11，同時在將該 筒狀驅動器3之中空柄插嵌之柄插入孔31的圓周面上，形 成嵌合於該中空柄1之V字形溝1 1而將該V字形溝1 1閉 塞的溝閉塞突出部34。 申請專利範圍第6項之發明，係在如申請專利範圍第1 項至5項中任一項之槍管鑽，其中，中空柄1係由擠製或 拉製中空型材料所構成。 〔發明效果〕 根據上述解決手段之效果附上圖式的參考符號加以說明 時’若依據有關申請專利範圍第1項之發明的槍管鑽，在 涵蓋中空柄1之全長雖具有V字形溝11，但在插嵌於筒狀 驅動器3之後端部lb處該V字形溝11係埋入溝閉塞片8 之構成’所以深孔切削之際’供應筒狀驅動器3內之冷卻 劑C無在中空柄1的後端部丨b側通過v字形溝n而漏出 外部之虞。於是’在此構成，係涵蓋中空柄1之全長具有 V字形溝11者即可，故爲了適用於相同工具直徑而工具長 度不同的複數種槍管鑽，製作同徑而長度不同的中空柄 時，從預先涵蓋全長設置有V字形溝11的長條原料切斷成 各個必要的長度分即可’不要短材料的發生可極少，以去 除材料的浪費而可降低材料成本之外，作爲長條狀原料， 在長條狀管材料作切割加工或以軋輥加工涵蓋全長形成V 子开;^溝1 1者，抑或可以利用模型形成γ字形溝1 1之藉由 擠製或拉製中空型材料等的量產方式而獲得，所以可高效 率且容易以低成本製作。 根據申請專利範圍第2項之發明時，該溝閉塞片8被設 -10- 200914173 定比中空柄1之筒狀驅動器3內的插嵌部更長’所以承受 切削負載（旋轉負載）之該中空柄1之後部側透過溝閉褰 片8而被補強，因此成爲高強度及高剛性’而可提高深孔 切削的加工性與槍管鑽的耐久性。 根據申請專利範圍第3項之發明時’溝閉塞片8被硬焊 在中空柄1的V字形溝1 1，同時該中空柄1的後端部1 b 被硬焊於筒狀驅動器3的柄插入孔3 1，所以作爲槍管鑽整 體被堅固地一體化，而關連到加工精度的提升。 根據申請專利範圍第4項之發明時，對筒狀驅動器3中 空柄1可以側邊鎖緊方式裝卸自如，所以依照中空柄1側 之損傷或摩耗可將該中空柄1側更換爲新品。於是，因爲 其構成係利用溝閉塞片8接受鎖緊螺絲32b的按壓，所以 可回避由於鎖緊螺絲32b之鎖緊而使中空柄1的變形或損 傷’同時具有可將該中空柄1堅固地鎖緊且固定的優點。 根據申請專利範圍第5項之發明的槍管鑽時，中空柄！ 雖涵蓋全長具有V字形溝丨丨，但插嵌於筒狀驅動器3內之 後W部1 b則透過筒狀驅動器3側之溝閉塞突出部3 4而被 建構成閉塞該V字形溝1 1，所以與該申請專利範圍第1項 之槍管鑽G1同樣’被供應到筒狀驅動器3內之冷卻劑C 無在中i柄1的後端部丨b側通過V字形溝丨丨而漏出之虞， 又製作適用相同工具直徑而工具長度相異之複數種槍管鑽 的中二柄1時’藉由切斷從預先涵蓋全長設置V字形溝1 1 之長il木原料可不浪費材料而降低材料的成丨，同時作爲長 il木原料可利用以長條管材料或中空型材等的量產方式獲 得’而可高效率且容易以低成本製作。更1，在此構成因 -11 - 200914173 爲不需要在該申請專利範圍第1項至4項所使用的溝閉塞 片8 ’所以可減少槍管鑽的零件數，同時也可減少硬焊部 位的優點。 根據申請專利範圍第6項之發明時，因爲中空柄1係由 擠製或拉製中空型材料所形成，使該中空柄1更容易且簾 價的製作。 【實施方式】 以下’參考圖式具體的說明有關本發明之槍管鑽的實施 f 形態。第1圖〜第5圖係顯示第一實施形態的槍管鑽G1， 第6圖及第7圖係顯示第二實施形態的槍管鑽G2，第8圖 ~第1 0圖係顯示第三實施形態的槍管鑽G3。此外，在此等 槍管鑽G1〜G3中’關於使用第1 !圖~第H圖之既述的習 知例之槍管鑽G共同的構造元件，賦予同樣的符號而把說 明省略。 如第1(A)、（B)圖所示，第一實施形態之槍管鑽G1的構 成，係沿著外面的長度方向具有涵蓋全長之切屑排出用的 , V字形溝1 1的中空柄部1 ;將此中空柄部1切成V字形之 前端1 a硬焊固定用之鎖孔用的切削頭2 ;將該中空柄1之 後端部1 b插嵌固定之大直徑筒狀驅動器3 ;以及在該中空 柄部1之後端部1 b埋入V字形溝1 1並加以固定的溝閉塞 片8。 中空柄部1，透過涵蓋全長之v字形溝11而橫剖面爲如 第2圖及第3圖般的約略2 / 3圓形，內部空間建構成冷卻 劑供應路1 0，而將其後端部1 b插嵌於筒狀驅動器3的柄插 入孔3 1並硬焊固定。又，切削頭2，係由超硬合金等所形 -12- 200914173 成，具備第1 2圖所顯示與習知例同樣的構造/形狀。 筒狀驅動器3，係被心軸（參考第1 1圖的符號4 )的夾 頭等所把持而接受旋轉驅動力的部位，於圓周面具有把持 平坦部3 a，同時沿著中心線後部側的小徑冷卻劑供應路3 0 與前部側的大徑柄插入孔3 1係同心狀地連通並貫通，如第 4圖所示，成爲把插嵌於柄插入孔3 1之中空柄部1的後端 以該柄插入孔3 1之內端的環狀階部3 3接受而定位。 溝閉塞片8，如也在第2圖~第5圖顯示，形成剖面大致 扇形的棒狀，在與中空柄部1之V字形溝1 1嵌合的狀態 下，與該中空柄1的圓周面連接之形成圓周曲面的外面部 8a，與V字形溝1 1的兩側面密接之鄰接平面部8b、8b建 構成圓周面，同時前端形成斜切之形狀的傾斜面8c，其後 端配置與中空柄1之後端一致而硬焊固定於該V字形溝 1 1。而且，該溝閉塞片8的長度被設定比中空柄1之筒狀 驅動器3內之插嵌部更長，透過此將中空柄1之後端部1b 插嵌於筒狀驅動器3的柄插入孔3 1並固定的狀態下，該溝 閉塞片8之前端側超越柄插入孔3 1的前端而暴露。此外， 在溝閉塞片8之柄插入孔31內的後部側，對柄插入孔31 之內圓周面係在圓弧狀外面部8 a硬焊固定。 在該構成之槍管鑽G卜當深孔加工時，如第1 1圖所示， 與習知構成之槍管鑽G的情況同樣，將通過筒狀驅動器3 及中空柄1之冷卻劑供應路30、1 0而供應之冷卻劑C引導 至切削頭2的冷卻劑通路20，而從尖端面的冷卻劑放出口 2 1 —面供應切削部位，一面以旋轉驅動之切削頭2的刀刃 部23進行被削材料W (參考第1 1圖）的切削，同時將隨 -13- 200914173 著此切削而產生的切屑s (參考第1 1圖）與冷卻劑c (參 考第11圖）一起通過切削頭2及中空柄1的V字形溝22、 1 1而排出外部。此時，在被插嵌固定於筒狀驅動器3內之 柄插入孔3 1之中空柄1的後端部1 b，因爲V字形溝1 1透 過溝閉塞片8而被閉塞，所以被導入筒狀驅動器3內之冷 卻劑C無漏出外部之虞。 又，在中空柄1之承受切削負載（旋轉負載）的後端部 側113， V字形溝11超越至筒狀驅動器3內插嵌部分之位 f:' 置被埋入溝閉塞片8 ’因此該後部側1 b被補強而成爲高強 度及高剛性’而具有可提高深孔切削的加工性與槍管鑽的 耐久性之優點。再者，溝閉塞片8與中空柄1及筒狀驅動 器3彼此被硬焊，使槍管鑽G1整體被堅固地一體化，而可 提升加工精度。 而且，作爲如此的槍管鑽G1，製造相同工具直徑而工具 長度相異之複數種時’切削頭2及筒狀驅動器3使用共同 者’而僅中空柄1有需要配合各個工具的長度。於是，此200914173 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a barrel drill used in deep hole machining. [Prior Art] As a deep hole processing method, although there are various methods such as a barrel drilling method, an ejector method (double tube method), a single tube method, etc., a small diameter deep hole processing is a barrel drill. The way is appropriate. That is, the barrel drilling method, as shown in FIG. 1 , uses the same cross-sectional shape as the front end of the hollow shank 1 having a cross section of the V-shaped groove 1 1 through the side surface of 2 / 3 to 3 / 4 The barrel drill G fixed by the cutting head 2 supplies the coolant C' introduced into the cylindrical actuator 3 on the base side through the inside of the hollow shank 1 to supply the cutting portion from the coolant discharge port 2 1 ' on the tip end surface of the cutting head 2 While cutting is performed on one side, the chips S generated along with the cutting can be discharged to the outside through the V-shaped groove 1 1 together with the coolant C. Even if the cutting hole becomes deep, since the conveying pressure of the coolant C is based on the tool It is determined by the length, so it is suitable for deep hole machining of small diameter. Further, in the first embodiment, the mandrel '5 that is rotatably driven by the cylindrical actuator 3 is a chip box' 6 which is a discharge portion of the chip s and the coolant C, and is attached to the front wall side of the chip box 5. The guide sleeve of the hollow shank 1 is externally fitted between the end surface of the workpiece w, and 7 is attached to the dam material which is occluded in the V-shaped groove 1 of the hollow shank 1 on the wall side after the chip box 5. Figures 1 2 to 14 show examples of conventional barrel-like drill collars. As shown in the figure, the 'hollow handle 1' is formed by cutting or tube processing of the tube material, and forms a V-shaped groove 1 1 ' from the front end 1 a to the front end portion 1 b along the longitudinal direction in order to join. The area becomes larger 'the base end portion of the cutting head 2 which is formed in an inverted V shape on the front end 1 a corresponding to the cut into a V shape is welded and fixed by 200914173, and on the other hand, there is no V-shaped groove 1 1 and the end portion 1 b is inserted into the shank insertion hole 31 of the cylindrical driver 3, and is fixed to the cylindrical driver 3 by brazing of the insertion portion. The rear end portion lb of the hollow shank 1 has no V-shaped groove 11 in order to prevent the coolant C (refer to the first FIG. 1) introduced into the cylindrical actuator 3 from leaking out of the outside through the V-shaped groove 11. However, the cutting head 2 is internally provided with a coolant passage 20 that communicates with the coolant supply passage 10 in the hollow shank 1, while the coolant passage 20 is opened at the tip end face 2a as a coolant discharge port 21, and is also circumferential. The face is formed to form a V-shaped groove 22 which is connected to the V-shaped groove 11 of the hollow shank 1 in a full length, and faces the front edge of the V-shaped groove 22 to form a blade 23. Further, in the 12th (B)th diagram, the arrow symbol a indicates the tool rotation direction, and the opening angle 0 of the V-shaped groove 22 (the same as the opening angle of the V-shaped groove 1 1) is set to a range of 90 to 130°. Usually it is about 10~120°. SUMMARY OF THE INVENTION [Problems to be Solved by the Invention] As such a barrel drill G, even if the applicable cutting diameter is the same 'the length to be used to accommodate the depth of the deep hole to be cut' is determined by the diameter of each tool (cutting) Caliber) It is necessary to have different tool lengths. For example, when the tool diameter is 5mm, the tool length (full length) is about 60, 400, 600 '800, 1000, 1 200mm, and the tool diameter is 10~15mm. In general, the length of the tool is about 7 types of 500, 600, 800, 1 inch, 1200 '1400, and 1650 mm. The length of the tools can be changed by changing the length of the hollow handle 1. However, when a plurality of types of barrel drills having the same tool diameter and different lengths are manufactured, the hollow shank 1 is required to have the rear end portion 1 b as a region without the V-shaped groove 1 1 as described above, so it cannot be hoisted from 200914173 in advance. It is obtained by cutting off the tube material which forms the long strip of the V-shaped gully as a whole. Therefore, in the past, when a plurality of hollow shanks 1 of the same diameter and different lengths were to be produced, or the tube material cut by the length of the tool was used, the V-shaped groove n' was formed after the processing, or it was cut neatly in advance. The length of the tube material forms a V-shaped groove 1 ,, and the length of the tool is cut. However, in the former method, the formation of the v-shaped groove of the post-processing cannot be collectively performed, because it is necessary to change the processing conditions in accordance with the length of the pipe material, so that the processing and time are wasted, and the efficiency is very poor, and the production cost is also high. . Further, in the latter method, although the v-shaped groove 11 can be formed under the same processing conditions, the tube material to be processed becomes the longest tool length to be used, so when a hollow tool shank having a shorter tool length is to be applied, A large amount of short materials that are not cut off occurs, so the cost of material is high and the problem is also large from the viewpoint of saving resources. The present invention has been made in view of the above circumstances. The purpose of the present invention is to provide a plurality of barrel drills having different tool lengths for use as barrel drills in accordance with the same tool diameter, and the hollow handles having the same diameter and different lengths are cut off from the full length in advance. The long strip material provided with the V-shaped groove does not cause a large amount of unnecessary short materials, and can be produced with high efficiency and easy to be produced at low cost. [Means for Solving the Problem] In order to achieve the above object, the invention of claim 1 is attached to the reference numeral of the drawings, and is a barrel drill having chip discharge in the longitudinal direction along the outside. a V-shaped groove handle 1; a cylindrical actuator 3 in which the end portion 1 b of the hollow shank 1 is inserted and fixed; and a cutting head 2 fixed to the front end 1 a of the hollow shank 1 and introduced into the cylindrical shape The coolant C of the actuator 3 is supplied to the cutting portion through the coolant discharge port 2 1 at the front end of the cutting head 2 through the hollow 彳 丨 θ stomach & 200914173, and is discharged together with the chip S by the V-shaped groove 11, which is characterized in that The hollow shank 1 includes the V-shaped groove 11 at its entire length, and at the rear end portion 1b of the cylindrical actuator 3 inserted into the hollow shank 1 is fixed, and a groove burying the V-shaped groove 1 1 is fixed. Closure piece 8. According to the invention of claim 2, in the barrel drill of the first aspect of the patent application, the groove closing piece 8 is set longer than the insertion portion in the cylindrical driver 3 of the hollow shank 1. In the invention of claim 3, in the barrel drill of the first aspect of the patent application, the groove closing piece 8 is brazed to the V-shaped groove 1 of the hollow shank 1 and the rear end of the hollow shank 1 The portion 1 b is brazed to the shank insertion hole 31 of the cylindrical driver 3. In the invention of claim 4, in the barrel drill of the first aspect of the patent application, the groove closing piece 8 is brazed to the V-shaped groove 1 1 of the hollow shank 1 while forming a screw hole 32 extending through the barrel The front side of the driver 3 is formed inside and outside, and is formed to be inserted into the rear end portion lb of the hollow shank 1 of the shank insertion hole 31 of the cylindrical driver 3, and is inserted into the groove 32b of the screw hole 32a. The occlusive sheet 8 is crimped and fixed. Further, the invention of claim 5 is a barrel drill having a hollow shank 1 having a V-shaped groove 11 for chip discharge along the outer length; the rear end lb of the hollow shank 1 is inserted and fixed a cylindrical actuator 3; and a cutting head 2 fixed to the front end la of the hollow shank 1 and a coolant C introduced into the cylindrical actuator 3 through the hollow shank 1 from the tip of the cutting head 2 The discharge port 21 is supplied to the cutting portion, and is discharged from the cutting powder S by the V-shaped groove 11, and is characterized in that: 200914173 The hollow shank 1 covers the entire length thereof with the V-shaped groove 11, and at the same time, the cylindrical shape The hollow shank of the actuator 3 is inserted into the circumferential surface of the shank insertion hole 31, and a groove clogging projection 34 that is fitted to the V-shaped groove 1 1 of the hollow shank 1 to close the V-shaped groove 1 1 is formed. The invention of claim 6 is the barrel drill of any one of claims 1 to 5, wherein the hollow shank 1 is formed by extruding or drawing a hollow type material. [Effect of the Invention] According to the effect of the above-mentioned solution, when the reference symbol of the drawing is attached, the gun drill according to the invention of the first aspect of the patent application has a V-shaped groove 11 in the entire length of the hollow handle 1 However, the V-shaped groove 11 is embedded in the groove closing piece 8 at the end portion 1b of the cylindrical actuator 3, so that the coolant C in the cylindrical actuator 3 is not hollow at the time of deep hole cutting. The rear end portion 丨b side of the shank 1 leaks out of the outer cymbal through the v-shaped groove n. Therefore, the configuration here is such that the hollow shank 1 has a V-shaped groove 11 in its entire length. Therefore, in order to apply a plurality of barrel drills having different tool lengths to the same tool diameter, a hollow shank having the same diameter and different lengths can be produced. It is possible to cut into a long length of material which has a V-shaped groove 11 in its entirety, and it is possible to cut the length of each material into a necessary length. The occurrence of a short material can be minimized, and the material cost can be reduced to reduce the material cost. Raw material, in the strip material processing for cutting or roll processing to cover the full length of the V sub-opening; ^ groove 1 1 , or the model can be used to form the γ-shaped groove 1 1 by extruding or drawing hollow material It is obtained by mass production methods, etc., so it can be produced efficiently and easily at low cost. According to the invention of claim 2, the groove closing piece 8 is set to be longer than the insertion portion in the cylindrical actuator 3 of the hollow shank 1 by the -10-200914173, so the cutting load (rotary load) is received. Since the rear side of the hollow shank 1 is reinforced by the gully 8 and the ridge piece 8 is reinforced, it has high strength and high rigidity, and the workability of deep hole cutting and the durability of the barrel drill can be improved. According to the invention of claim 3, the groove closing piece 8 is brazed to the V-shaped groove 1 1 of the hollow shank 1 while the rear end portion 1 b of the hollow shank 1 is brazed to the shank of the cylindrical driver 3. Inserting the hole 3 1, it is solidly integrated as a barrel drill, and is related to the improvement of machining accuracy. According to the invention of claim 4, the shank 1 of the cylindrical actuator 3 can be detachably locked in a side-locking manner, so that the hollow shank 1 side can be replaced with a new one in accordance with the damage or wear of the hollow shank 1 side. Therefore, since the structure receives the pressing of the locking screw 32b by the groove closing piece 8, the deformation or damage of the hollow shank 1 due to the locking of the locking screw 32b can be avoided, and the hollow shank 1 can be firmly fixed. The advantage of locking and fixing. Hollow handle according to the barrel drill of the invention of claim 5; The V-shaped groove is covered in the entire length, but after being inserted into the cylindrical actuator 3, the W portion 1b is closed by the groove on the side of the cylindrical actuator 3 to close the protruding portion 34, thereby occluding the V-shaped groove 11. Therefore, the coolant C supplied to the cylindrical actuator 3 is not leaked through the V-shaped groove on the side of the rear end portion 丨b of the middle handle 1 as in the barrel drill G1 of the first application of the patent application.虞, when making the middle two handles of a plurality of barrel drills of the same tool diameter and different tool lengths, the cut can be reduced by not cutting the material from the long il wood material which covers the full length of the V-shaped groove 1 1 The enthalpy of the material can be obtained as a long il wood raw material by mass production in the form of a long tube material or a hollow profile, and can be efficiently produced and easily produced at low cost. Further, here, -11 - 200914173 is a groove closing piece 8' which is not required to be used in items 1 to 4 of the scope of the patent application, so that the number of parts of the barrel drill can be reduced, and the welded portion can be reduced. The advantages. According to the invention of claim 6 of the patent application, since the hollow shank 1 is formed by extruding or drawing a hollow type material, the hollow shank 1 is made easier and the curtain is manufactured. [Embodiment] The following is a detailed description of the implementation of the barrel drill of the present invention with reference to the drawings. Figs. 1 to 5 show a barrel drill G1 of the first embodiment, and Figs. 6 and 7 show a barrel drill G2 of the second embodiment, and Figs. 8 to 10 show a third. The barrel drill G3 of the embodiment. Further, in the barrel drills G1 to G3, the same structural elements as those of the barrel drill G of the conventional example described in the first to fourth drawings are denoted by the same reference numerals and will not be described. As shown in the first (A) and (B) drawings, the barrel drill G1 of the first embodiment has a hollow shank for covering the entire length of the chip along the longitudinal direction of the outer surface, and the V-shaped groove 1 1 is provided. Part 1 : The cutting head 2 for cutting the hollow shank 1 into a V-shaped front end 1 a for hard soldering fixing; the large diameter cylindrical driver 3 in which the rear end 1 b of the hollow shank 1 is inserted and fixed And a groove closing piece 8 in which the V-shaped groove 1 is embedded in the end portion 1b after the hollow shank portion 1 and fixed. The hollow shank 1 passes through the v-shaped groove 11 covering the entire length and has a cross section of about 2 / 3 circular as shown in Fig. 2 and Fig. 3, and the internal space is constructed to constitute the coolant supply path 10, and the rear end thereof is formed. The portion 1b is inserted into the shank insertion hole 31 of the cylindrical driver 3 and is brazed and fixed. Further, the cutting head 2 is formed of a cemented carbide or the like in the form of a -12-200914173, and has the same structure/shape as the conventional example shown in Fig. 2 . The cylindrical actuator 3 is a portion that receives a rotational driving force by a chuck such as a spindle (refer to reference numeral 4 in Fig. 1), and has a grip flat portion 3a on the circumferential surface and a rear side along the center line. The small-diameter coolant supply path 30 is concentrically connected and penetrated with the large-diameter shank insertion hole 3 1 on the front side, and as shown in Fig. 4, is inserted into the hollow shank of the shank insertion hole 31. The rear end of 1 is received by the annular step 3 3 of the inner end of the shank insertion hole 31. The groove closing piece 8 is also formed in a rod shape having a substantially fan-shaped cross section as shown in Figs. 2 to 5, and is fitted to the V-shaped groove 1 of the hollow shank 1 in a state of being fitted to the circumference of the hollow shank 1. The outer surface portion 8a of the circumferentially curved surface is formed, and the abutting flat portions 8b, 8b which are in close contact with the both side surfaces of the V-shaped groove 1 1 are formed into a circumferential surface, and the front end is formed with an inclined surface 8c having a chamfered shape, and the rear end is disposed and configured The rear end of the hollow shank 1 is uniformly and brazed and fixed to the V-shaped groove 11. Further, the length of the groove closing piece 8 is set longer than the insertion portion in the cylindrical driver 3 of the hollow shank 1, and the rear end portion 1b of the hollow shank 1 is inserted into the shank insertion hole 3 of the cylindrical driver 3 through this. In the state in which it is fixed, the front end side of the groove closing piece 8 is exposed beyond the front end of the shank insertion hole 31. Further, on the rear side in the shank insertion hole 31 of the groove closing piece 8, the inner circumferential surface of the shank insertion hole 31 is brazed and fixed to the arcuate outer surface portion 8a. When the barrel drill G of this configuration is deep hole machining, as shown in Fig. 1, the coolant supply through the cylindrical actuator 3 and the hollow shank 1 is the same as in the case of the conventionally formed barrel drill G. The coolant C supplied by the roads 30, 10 is guided to the coolant passage 20 of the cutting head 2, and the cutting portion is supplied from the coolant discharge port 2 1 of the tip end surface, and the cutting edge portion of the cutting head 2 is rotationally driven. 23The cutting of the material W to be cut (refer to Fig. 1 1) is carried out, and the chips s (refer to Fig. 1 1) generated by the cutting according to -13-200914173 are passed together with the coolant c (refer to Fig. 11). The cutting head 2 and the V-shaped grooves 22 and 1 of the hollow shank 1 are discharged to the outside. At this time, the rear end portion 1b of the hollow shank 1 inserted into the shank insertion hole 31 in the cylindrical actuator 3 is occluded because the V-shaped groove 1 1 is slid through the groove closing piece 8, so that it is introduced into the cylinder. The coolant C in the actuator 3 does not leak out of the outside. Further, in the rear end side 113 of the hollow shank 1 subjected to the cutting load (rotational load), the V-shaped groove 11 is moved beyond the position f of the insertion portion of the cylindrical actuator 3: 'the groove is closed 8'. The rear side 1 b is reinforced to have high strength and high rigidity, and has the advantage of improving the workability of deep hole cutting and the durability of the barrel drill. Further, the groove closing piece 8 and the hollow shank 1 and the cylindrical driver 3 are brazed to each other, so that the entire barrel drill G1 is integrally integrated, and the machining accuracy can be improved. Further, as such a barrel drill G1, when the same tool diameter is produced and the tool lengths are different, the cutting head 2 and the cylindrical driver 3 use the same, and only the hollow shank 1 needs to match the length of each tool. So this
I ΐ 等中空柄1-…，因爲涵蓋全長具有V字形溝丨丨即可，所以 藉由從預先涵蓋全長設有v字形溝u之長條狀原料切斷成 各個必要長度而製作’隨著切斷而發生不要的短材料可極 少’僅Ja些即可去除材料的浪費而大大地減低材料成本， 而從省資源的觀點也較妥。而且’作爲其長條狀原料，於 長條狀管材料作切割加工或以輥子加工涵蓋全長形成v字 形溝1 1者，或可利用以模型形成v字形溝u之藉由擠製 或拉製中空型材料等的量產方式而獲得，所以可高效率且 容易以低成本製作該等中空柄卜-，尤其透過從前不能使 -14- 200914173 用之中空型材料的利用可大幅提高製作效率及减低製作成 本° 如第6圖及第7圖所示第二實施形態之槍管鑽g 2，在溝 閉塞片8之外面部8a的後部側沿著長度方向形成平坦部 81’ 一方面於筒狀驅動器3之前部側內外貫通之半徑方向 的2個螺絲孔32a、32a形成前後配置，並以鎖緊螺絲32b 螺合在各螺絲孔32a。而且’中空柄1與該第一實施形態之 槍管鑽G1同樣將溝閉塞片8嵌合於v字形溝11並以硬焊 固定’但對筒狀驅動器3之柄插入孔31，固定之溝閉塞片 8的平坦部81面向兩螺絲孔32a、32a插嵌之後，透過鎖緊 兩鎖緊螺絲3 2b ' 3 2b成爲以側鎖方式連結固定。 在此第二實施形態之槍管鑽G2，與該第一實施形態之槍 管鑽G 1同樣將預先涵蓋全長設有v字形溝n的長條狀原 料透過切斷而可製作中空柄1之外，因爲對筒狀驅動器3 中空柄1可裝卸自如’所以當中空柄1側損傷或摩耗而不 能使用時，具有可更換新品的優點。而且，在此中空柄1 之側鎖’因爲兩鎖緊螺絲32b、32b按接於溝閉塞片8的平 坦面’所以可回避由於鎖緊螺絲32b之觸及而造成之中空 柄1的變形或損傷，同時可將該中空柄1堅固地鎖緊固定， 以確保穩定的切削性能。 如第8圖至第10圖所示第三實施形態之槍管鑽g 3，切 削頭（圖示省略）及中空柄1雖與該第一實施形態及第二實 施形態之槍管鑽G1、G2相同，但替代使用前述之溝閉塞 片8’而於筒狀驅動器3之柄插入孔31的圓周面上，剖面 山形而於軸方向一體形成連接的溝閉塞突出部34，而將中 -15- 200914173 空柄1的後端部1 b插嵌於該柄插入孔3 1時，由於該溝閉 塞突出部34嵌合其V字形溝11，在該嵌合部分V字形溝 1 1成爲閉塞的狀況。 因此，在此第三實施形態之槍管鑽G 3，也於深孔加工 時，被導入筒狀驅動器3內之冷卻劑C無漏出外部之虞。 而且，中空柄1涵蓋全長具有V字形溝11，所以製造適用 相同工具直·徑而工具長度相異之複數種的槍管鑽G3---之 中空柄1 ---時，與該第一實施形態及第二實施形態之槍管 ” 鑽G 1、G2的情況完全相同，從預先涵蓋全長設置有V字 形溝11的長條管材料或切斷藉由擠製或拉製中空型材料 等的量產方式所獲得的長條狀原料，可極力減少不要短材 料的發生而抑制浪費，而可圖謀高效率且大幅地減低成 本，對省資源亦有所貢獻。又，此種情況，不需要在第〜 及第二實施形態之槍管鑽Gl、G2的溝閉塞片8，所以具有 減少槍管鑽之零件數的優點。 在上述第一至第三實施形態中，雖例示空柄1及切削頭 《 2的圓周面之V字形溝11、21爲1支的槍管鑽G1~G3，但 本發明亦可適用於2支的V字形溝配置於圓周面之徑方向 兩側的槍管鑽。在具有2支V字形溝的槍管鑽，因爲切削 頭尖端的刀刃部成爲2個部位，所以在該切削頭之尖端面 對應於各刀刃部設置有2個冷卻劑放出口。又，本發明之 槍管鑽’亦可將硬質材料所形成的引導墊或硬焊，或藉由 螺絲固定在切削頭之圓周面。更在本發明，具體的圖示雖 省略，但作爲其他實施形態，亦可採用關於如第一實施形 態將溝閉塞片8硬焊於V字形溝1 1之中空柄1，於其後端 -16- 200914173 部1 b的外圓周面（包含溝閉塞片8的外面8 a )螺刻陽螺紋， 同時對應於筒狀驅動器3之柄插入孔3 1的內圓周面螺刻陰 螺紋，將中空柄1的後端部la對該筒狀驅動器3可裝卸地 螺合連結之構造。 【圖式簡單說明】 第1圖係顯示有關本發明之第一實施形態之槍管鑽，（A) 爲側視圖、（B)爲正視圖。 第2圖係第1圖之I — I線的剖面箭頭向視圖。 f 第3圖係第1圖之Π — Π線的剖面箭頭向視圖。 ' 第4圖係第3圖之m — m線的剖面箭頭向視圖。 第5圖係顯示對該第一實施形態之槍管鑽中空柄的v字 形溝之溝閉塞片的安裝操作的立體圖。 第6圖係顯示有關對本發明之第二實施形態之槍管鑽中 空柄的V字形溝之溝閉塞片的安裝操作的立體圖。 第7圖係在該第二實施形態之槍管鑽中中空柄與筒狀驅 動器之連結部的縱剖面側視圖。 ( 第8圖係顯示有關對本發明之第三實施形態之槍管鑽 中，中空柄與筒狀驅動器之連結操作的立體圖。 第9圖係在該第三實施形態之槍管鑽中中空柄與筒狀驅 動器之連結部的縱剖面側視圖。 第1 0圖係第9圖之IV — IV線的剖面箭頭向視圖。 第1 1圖係顯示依據習知之槍管鑽的深孔切削加工的縱 剖面側視圖。 第12圖係顯示槍管鑽的習知例，（A)爲側視圖、（B)爲正 視圖。 -17- 200914173 第1 3圖係第1 2圖之V — V線的剖面箭頭向視圖 第1 4圖係第1 2圖之VI — VI線的剖面箭頭向視圖 【主要元件符號說明】 1 中: 空: 柄1 部 la 刖 丄山 m lb 後 端 部 2 切 削 頭 2a 尖 端 面 3 筒 狀 驅 動 器 8 溝 閉 塞 片 8a 外 面 部 10 冷 卻 劑 供 應 路 11 V 字 形 溝 20 冷 卻 劑 供 應 路 2 1 冷 卻 劑 放 出 □ 22 V 字 溝 23 刀 尖 部 30 冷 卻 劑 供 m hlli、 路 3 1 柄 插 入 孔 32a 螺 絲 孔 32b 鎖 緊 螺 絲 33 rm 狀 階 部 34 溝 閉 塞 突 出 部 8 1 平 坦 面 G 1 〜G3 槍 管 鑽 -18-I ΐ 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空 中空The short material that is cut off and the unwanted ones can be very rare. Only a few of them can remove the waste of materials and greatly reduce the material cost, and it is also better from the viewpoint of saving resources. Moreover, as a long strip of material, the strip-shaped tube material is cut or rolled to cover the entire length of the v-shaped groove 1 or may be extruded or drawn by using a model to form a v-shaped groove u. Since the mass production method of a hollow material or the like is obtained, the hollow handles can be produced with high efficiency and at low cost, and the production efficiency can be greatly improved, in particular, by using the hollow type material used in the previous period-14-200914173. Reduction of the manufacturing cost. The barrel drill g 2 of the second embodiment shown in Figs. 6 and 7 forms a flat portion 81' along the longitudinal direction on the rear side of the face 8a outside the groove closing piece 8. The two screw holes 32a and 32a in the radial direction penetrating the inner side and the outer side of the front side of the actuator 3 are formed in front and rear, and are screwed to the respective screw holes 32a by the locking screws 32b. Further, in the same manner as the barrel drill G1 of the first embodiment, the hollow shank 1 is fitted to the v-shaped groove 11 and fixed by brazing, but the shank of the cylindrical driver 3 is inserted into the hole 31, and the groove is fixed. After the flat portion 81 of the occluding piece 8 is inserted into the two screw holes 32a and 32a, the two locking screws 3 2b ' 3 2b are locked and fixed by the side lock. In the same manner as the barrel drill G1 of the first embodiment, the barrel-shaped drill G2 of the second embodiment can cut the long-length raw material having the v-shaped groove n in its entirety, and can cut the hollow shank 1 In addition, since the hollow shank 1 of the cylindrical actuator 3 is detachable, it has the advantage of being replaceable when the hollow shank 1 side is damaged or worn and cannot be used. Moreover, in the side lock of the hollow shank 1 because the two locking screws 32b, 32b are pressed against the flat surface of the groove closing plug 8, the deformation or damage of the hollow shank 1 due to the contact of the locking screw 32b can be avoided. At the same time, the hollow shank 1 can be firmly locked and fixed to ensure stable cutting performance. The barrel drill g 3 of the third embodiment shown in Figs. 8 to 10, the cutting head (not shown) and the hollow stem 1 are the same as the barrel drill G1 of the first embodiment and the second embodiment. G2 is the same, but instead of using the above-described groove occluding piece 8', on the circumferential surface of the shank insertion hole 31 of the cylindrical actuator 3, the groove occlusion projection portion 34 is integrally formed in the axial direction in the axial direction, and the center -15 is closed. - 200914173 When the rear end portion 1b of the stalk 1 is inserted into the shank insertion hole 31, the groove clogging projection 34 fits into the V-shaped groove 11, and the V-shaped groove 1 1 is closed at the fitting portion. situation. Therefore, in the barrel drill G 3 of the third embodiment, the coolant C introduced into the cylindrical actuator 3 does not leak to the outside during deep hole processing. Moreover, the hollow shank 1 covers the entire length of the V-shaped groove 11, so that when a plurality of barrel drills G3---the hollow shank 1 --- of the same tool diameter and diameter are used, the first The barrel of the embodiment and the second embodiment are identical in the case of the drills G1 and G2, and the long tube material in which the V-shaped groove 11 is provided in the entire length is cut in advance, or the hollow material is extruded or drawn. The long strips of raw materials obtained by the mass production method can minimize the occurrence of non-short materials and suppress waste, and can be used to save energy and reduce costs, and contribute to saving resources. Moreover, in this case, Since the groove plugs 8 of the barrel drills G1 and G2 of the first and second embodiments are required, there is an advantage in that the number of parts of the barrel drill is reduced. In the first to third embodiments, the empty handle 1 is exemplified. And the V-shaped grooves 11, 21 of the circumferential surface of the cutting head 2 are one barrel drill G1 to G3, but the present invention is also applicable to a gun in which two V-shaped grooves are disposed on both sides in the radial direction of the circumferential surface. Pipe drill. In the barrel drill with 2 V-shaped grooves, because of the tip of the cutting head Since the blade portion has two positions, the tip end surface of the cutting head is provided with two coolant discharge ports corresponding to the respective blade portions. Further, the barrel drill of the present invention can also be a guide pad formed of a hard material or hard. The welding is fixed to the circumferential surface of the cutting head by screws. In the present invention, although the specific illustration is omitted, as another embodiment, the groove closing piece 8 may be brazed to the V as in the first embodiment. The hollow shank 1 of the glyph 1 1 is screwed with a male thread on the outer circumferential surface of the rear end 16-200914173 portion 1 b (including the outer surface 8 a of the groove closing piece 8), and corresponding to the shank insertion of the cylindrical driver 3 The inner circumferential surface of the hole 3 1 is screwed with a female screw, and the rear end portion la of the hollow shank 1 is detachably coupled to the cylindrical driver 3 in a detachable manner. [FIG. 1] FIG. 1 shows the present invention. In the barrel drill of the first embodiment, (A) is a side view and (B) is a front view. Fig. 2 is a cross-sectional arrow view of the I-I line of Fig. 1 f. Fig. 3 is a first view Π — The cross-section arrow of the Π line is in the view. ' Figure 4 is the m of the m-line Fig. 5 is a perspective view showing the mounting operation of the groove-shaped louver of the v-shaped groove of the hollow shaft of the barrel drill of the first embodiment. Fig. 6 is a view showing the barrel drill of the second embodiment of the present invention. Fig. 7 is a longitudinal sectional side view showing a connecting portion of a hollow shank and a cylindrical actuator in the barrel drill of the second embodiment. A perspective view showing a connection operation between a hollow shank and a cylindrical actuator in a barrel drill according to a third embodiment of the present invention. Fig. 9 is a view showing a hollow shank and a cylindrical actuator in the barrel drill of the third embodiment. A longitudinal cross-sectional side view of the joint portion. Fig. 10 is a cross-sectional arrow view of line IV-IV of Fig. 9. Fig. 1 is a longitudinal sectional side view showing the deep hole cutting of a conventional barrel drill. Fig. 12 is a view showing a conventional example of a barrel drill, in which (A) is a side view and (B) is a front view. -17- 200914173 Figure 1 3 is the cross-section arrow of the V-V line of Figure 12, the view of the first picture, the cross-section arrow of the VI-VI line of Figure 12, the view [main symbol description] 1 : Empty: Handle 1 part la 刖丄山 m lb Rear end 2 Cutting head 2a Tip face 3 Cylindrical drive 8 Groove closing piece 8a Outer face 10 Coolant supply path 11 V-shaped groove 20 Coolant supply path 2 1 Coolant Release □ 22 V word groove 23 Tool tip 30 Coolant for m hlli, Road 3 1 shank insertion hole 32a Screw hole 32b Locking screw 33 rm Step 34 Groove occlusion protrusion 8 1 Flat surface G 1 ～ G3 Barrel Drill 18-