M396722 五、新型說明： 【新型所屬之技術領域】 一種單刃鑽頭構造，尤指利用二次研磨方式於鑽頭之鑽刀部 表面研磨出一退屑槽之製造方法。 【先前技術】 按，鑽頭為一般鑽孔工程所較為常用之工具，常見之鑽頭大M396722 V. New description: [New technical field] A single-edge drill bit structure, especially a method for grinding a chip-removing groove on the surface of a drill bit by a secondary grinding method. [Prior Art] Press, the drill bit is a commonly used tool for general drilling engineering, and the common drill bit is large.
致上分為單刃鑽頭、雙刃鑽頭甚或三至四刃鑽頭，其主要分別在 於鑽頭之鑽刃部尖端所形成之切削刀數量，而由於單刀鑽頭只有 一個切削刃，因此可容易的控制切削刃的長度，也就是鑽頭在鑽 孔時之孔徑，相較之下，由於雙刃鑽頭或四刀鑽頭其切削刀數量 較多，較不易控制每一切削刃形成等長，容易使鑽頭在鑽孔時形 成擴孔，然而，鑽頭之鑽刃部在進行鑽孔時，其切削刀為會切削 基材表面，而基材經切削刃切削所產生之碎屑，會由切削刃一侧 設置之退屑料引至_部連接刀柄部處，但由於鑽頭每一 切削刃-_會設置退觸，因此在雙⑽頭或四補頭上便會 形成有二退_或四退觸，但單補職只會有單—退屑槽， 所以在__孔孔狀下，單赠麵產生之碎魏無妓全 由退屑槽排出’容易造成卡狀問題發生，但由於單77鑽頭在鑽 孔之精度上有紐之表現，因此在於需要高精度孔徑之鑽孔作業 上⑷夕騎刷電路板上㈣連接各電路狀細微導通孔刀 鑽頭即成為首選之工具。 是以 要如何可使料鑽頭之漏能力增加，㈣止卡屑問 3 M396722 題產生，即為相關業者所亟欲改善之問題所在。 【新型内容】 本創作之主要目的乃在於，利用二次研磨方式於鑽刃部形成 退屬槽’避免鑽刀部因應力過大產生偏斜，以及冑免因溫度升高 發生淬火問題。It is divided into single-edged drills, double-edged drills or even three-to-four-blade drills, which are mainly based on the number of cutters formed by the tip of the drill blade. Since the single-die drill has only one cutting edge, it can be easily controlled. The length of the blade, that is, the hole diameter of the drill bit when drilling, compared with the number of cutters of the double-edged drill or the four-blade drill, it is difficult to control the length of each cutting edge to form the same length, and it is easy to drill the drill bit. When the hole is drilled, the cutting edge of the drill bit cuts the surface of the substrate, and the debris generated by the cutting of the substrate through the cutting edge is set by the cutting edge side. The anti-chip material is led to the _ joint connecting shank, but since each cutting edge of the drill bit - _ will set the retreat, there will be two retreats or four retreats on the double (10) or four nips, but the single The reinstatement will only have a single-backing flute, so in the __ hole shape, the broken Wei Wuqi produced by the single gift surface is completely discharged by the flute. It is easy to cause the card-like problem to occur, but the single 77 drill bit is drilled. The accuracy of the performance of the new, so it is in need The pore size precision drilling operations ⑷ Tokyo brush riding circuit board (iv) connecting the fine via hole shaped cutter drill i.e. choice of tools. Therefore, how to increase the leakage capacity of the drill bit, (4) the problem of the chip scraping 3 M396722 is the problem that the relevant industry is trying to improve. [New content] The main purpose of this creation is to use the secondary grinding method to form the retreat groove in the drill blade section to avoid the deflection of the drill section due to excessive stress and to avoid quenching problems due to temperature rise.
為達上述目的’本創作係設置有鑽刀部，鑽刃部一端連接有 刀柄部，卿雜遠離刀柄部末婦點處斜峽伸有一切削刃， 切肖J刃侧為以一次研磨方式於鑽刀部表面研磨出一退屑槽，且 退屑槽為由切削刃-側朝向刀柄部旋繞而成。 【實施方式】 粟刃二萨4與第二騎示，㈣$可清楚看4，本創作之 單刃鑽頭设置有鑽刀部1，鑽 i於遠離刀湖末她° =射刀姆，鑽刃部 !2 -侧為以二次研磨”減讀峰伸有—切助12，切削刃 方式於鑽刀部 退屑槽13為由切削刀12 研磨出退屑槽13，且 13係先於切削刀12之靜 °刀柄部2旋繞而成’該退屑槽 ώ〈fr點11處，知 退屑槽13卜再於第一退屬槽⑶朝向刀柄部2旋繞研磨出第-旋繞研磨出第二退屑槽132，"鱗靜點11處，朝向刀柄部2 呈並排且相連通，俾使退屑槽U第退屑槽131與第二退屑槽132 部1於進行鑽孔作業時其切削之截面積可有效的加大，讓鑽刃 由退屑槽13排出。 2所切削出之廢屑，可順利的 由於上述鑽刀部 之退屑槽 13為由二次研磨方式所形成，此 4 M396722 種做法為具有下列優點： 1、 退屑槽13為以分次研磨出第一退屑槽131與第二退屑样 132所形成，因此在研磨第一退屑槽131或第二退屑槽132時其 單次研磨所產生之應力與溫度，相較於退屑槽13 一次研磨形成之 應力與溫度可大為降低，避免鑽刃部1因應力過大產生偏斜，以 及避免因溫度升高發生淬火問題，且在製作微型鑽頭（鑽孔直徑小 於0. 5画〇時功效更加的顯著。 2、 由於多刃鑽頭在進行退屑槽13研磨加工作業時，其研磨 量較小，因此可利用現有研磨多刃鑽頭退屑槽13之研磨砂輪，來 進行單刃_之退賴13的二:欠_ ’以減少製造各式鑽頭時所 需之研磨石少輪數量，方便生產。 再者，由於為了增加鑽頭之剛性強度，因此鑽刀部1之退屑 槽13中央卿成的鑽蕊，由靜點u處朝向刀柄部2漸擴形成一 斜錐度，使鑽頭不㈣產生料的現象，對孔位精度可加以改善， 但會使退腦13越靠近刀柄部2其深度錢，也就是截面積會相 對減小，使退削槽13之能力降低，請參閱第二圖至第四圖所 不’由圖中可清楚看出，該退屬槽13係先於切削刃12 一側靠近 靜點11處，朝向刀柄部2旋繞研磨出第一退屑槽131，再於第一 L屑槽131罪近靜點u處之以偏斜一角度研磨出第二退肩槽 132 ’如第四圖所示，由圖中可看出，第一退屑槽ΐ3ι係以靜點u 處以角度Θ 1朝向刀柄部2旋繞研磨，而第二退屑槽132係以靜點 U處以角度Θ2朝向刀柄部2旋繞研磨’且角度Θ2為大於角度θ 5 M396722 1，使第-退屑槽131與第二退屬槽132於鑽刀部1之靜點 成並排且部分重疊狀，且第-退屑槽131與第二退顧13=形 •刀柄部2呈旋繞並排漸，也就是重疊部分減少（如第^ 面積）’藉此’如第三圖所示，第一退屑槽131與第二退屑槽⑶ 所形成之退屑槽13’在靠近刀柄部2處之寬度取為大於遠離刀柄 部2處之寬度U1，也就是退屑槽13為由鑽刀部丨末端朝向刀柄部 2呈寬度漸大狀’藉此，以補足退削槽13越靠近刀柄部2其深度 • 越淺，所造成退削槽13截面積相對減小之問題，使鑽刀部丨於進 行鑽孔作業時，其切削刃12所切削出之廢屑，可順利的由退屑槽 13排出，並可避免鑽刃部丨因應力過大產生偏斜，以及避免因溫 度升高發生淬火問題，更可以減少製造鑽頭時所需之研磨砂輪數 量。 【圖式簡單說明】 第一圖係為本創作之側視圖。 第一圖係為第一圖Α部分之放大圖。 . 第三圖係為本創作又一實施方式之局部侧視圖。 第四圖係為本創作又一實施方式之示意圖。 【主要元件符號說明】 1、鑽刀部 - 1卜靜點 • 12、切削刃 13、退屑槽 6 M396722 131、 第一退屑槽 132、 第二退屑槽 2、刀柄部In order to achieve the above objectives, the creation department is provided with a drill knives, and one end of the drill blade portion is connected with a shank portion, and a cutting edge is formed at the oblique gorge at the end of the knives at the end of the knives. The method grinds a chip-removing groove on the surface of the drill blade portion, and the chip-removing groove is formed by the cutting edge-side rotating toward the shank portion. [Embodiment] The blade of the two blades and the second rider, (4) $ can be clearly seen 4, the single-edged drill bit of this creation is provided with a drill section 1, and the drill is away from the end of the knife lake. The blade side! 2 - the side is the secondary grinding "reduction of the peak extension - the cutting assist 12, the cutting edge mode in the drill section of the chip flute 13 is the grinding blade 12 is ground out of the chip evacuation groove 13, and the 13 series precedes The static shank portion 2 of the cutting blade 12 is wound to form the 'flip-chip groove ώ <fr point 11 , and it is known that the chip-removing groove 13 is further wound around the first retreating groove (3) toward the shank portion 2 to perform the first-coil winding. The second chip-removing groove 132 is ground, and the scalloping point 11 is arranged side by side and communicated with the shank portion 2, so that the chip-removing groove U first chip-removing groove 131 and the second chip-removing groove 132 portion 1 are performed. The cutting cross-sectional area of the drilling operation can be effectively increased, and the cutting edge is discharged from the chip removing groove 13. The scraps cut out can be smoothly caused by the chip flute 13 of the above-mentioned drilling part. Formed by the grinding method, the 4 M396722 method has the following advantages: 1. The chip-removing groove 13 is formed by grinding the first chip-removing groove 131 and the second chip-removing sample 132 in a divided manner, so The stress and temperature generated by the single grinding of the chip removing groove 131 or the second chip removing groove 132 can be greatly reduced compared with the stress and temperature formed by the primary grinding of the chip removing groove 13, and the drilling blade 1 is prevented from being excessively stressed. Deviation occurs, and quenching problems due to temperature rise are avoided, and the micro drill bit is made (the hole diameter is less than 0.5 〇.) The effect is more remarkable. 2. The multi-edge drill bit is used for the grinding operation of the flute 13 When the amount of grinding is small, it is possible to use the grinding wheel of the existing multi-blade drill flute 13 to perform the single-blade retreat 13 of two: under-_ to reduce the grinding required for manufacturing various types of drills. In addition, in order to increase the rigidity of the drill bit, the core of the chip-removing groove 13 of the drill portion 1 is gradually expanded from the static point u toward the shank portion 2 to form a The taper degree makes the drill bit not (4) produce the material, and the hole position precision can be improved, but the depth of the back brain 13 closer to the shank portion 2, that is, the cross-sectional area will be relatively reduced, so that the uncutting groove 13 The ability is reduced, please refer to the second to fourth It should be clear from the figure that the retreating groove 13 is adjacent to the static point 11 on the side of the cutting edge 12, and the first chip-removing groove 131 is spirally ground toward the shank portion 2, and then the first L The chip groove 131 is near the static point u and the second retreating shoulder groove 132 is ground at an oblique angle. As shown in the fourth figure, it can be seen from the figure that the first chip retreating groove ι3ι is at the static point u. The angle Θ 1 is wound and ground toward the shank portion 2, and the second chip-removing groove 132 is wound at a static point U at an angle Θ2 toward the shank portion 2 and the angle Θ2 is greater than the angle θ 5 M396722 1, so that the first-backing chip The groove 131 and the second withdrawal groove 132 are arranged side by side and partially overlapped at the static point of the drill portion 1, and the first-removing groove 131 and the second retracting 13=shape•the shank portion 2 are spirally arranged and arranged. That is, the overlapping portion is reduced (e.g., the area of the ^). Thus, as shown in the third figure, the first chip-removing groove 131 and the chip-removing groove 13' formed by the second chip-removing groove (3) are located near the shank portion 2. The width is larger than the width U1 away from the shank portion 2, that is, the chip flute 13 is gradually enlarged from the end of the drill shank toward the shank portion 2, thereby complementing the retreating groove 13 The shallower the depth of the shank 2 is, the problem that the cross-sectional area of the uncutting groove 13 is relatively reduced, so that the cutting edge of the cutting edge 12 can be smoothly performed when the drilling part is drilled. The discharge from the chip flute 13 can avoid the deflection of the drill blade due to excessive stress, and avoid the quenching problem caused by the temperature rise, and can reduce the number of grinding wheels required for manufacturing the drill bit. [Simple description of the diagram] The first picture is a side view of the creation. The first figure is an enlarged view of the first figure. The third figure is a partial side view of yet another embodiment of the present creation. The fourth figure is a schematic diagram of still another embodiment of the creation. [Description of main components] 1. Drilling section - 1 Bujing point • 12, cutting edge 13, chip flute 6 M396722 131, first chip flute 132, second chip flute 2, shank part