M243285 五、創作說明（1) <新型所屬之技術領域> 本創作係有關一種PCBfi：型鑽頭之結構改良設計，尤 指一種可提升鑽針下鑽穩定度及強度之微型鑽頭結構改 良設計。 <先前技術> 按，現今為對應印刷電路板基板材料的多樣化、高 多層化、高密度化的市場環境變化，於新開發之電路板 上的微過孔通常直徑為0 . 0 5mm至0 . 2 5 mm，而此種微過孔 乃需仰仗高精密之微型鑽頭予以鑽設成形。 如第5圖所示之傳統微型鑽頭結構，其鑽頭於鑽針 1 0之鑽尖1 0 1處乃向後斜向研磨有二切削刃1 0 2 ，令各切削刃1 0 2順鑽針1 0之桿身向後延伸旋繞以 形成橫刃1 0 3及排屑溝1 0 4 ，同時使鑽針1 0心轴 之鑽蕊1 0 5自鑽尖1 0 1向後斜伸呈一倒錐狀之型態 、或如申請新型專利公告第3 2 4 2 8 9號專利案所為 之『印刷線路板鑽頭之構造改良』中，其鑽蕊1 0 5自 鑽尖1 0 1向後斜伸呈兩段倒錐部之型態設計，如是此 種呈錐狀設計之鑽蕊1 0 5 ，因其近鑽尖1 0 1處之結 構較為纖細，故當鑽頭下鑽時之穩定度乃較不易控制， 致使易有孔位偏移或斷針之情事發生；又其呈倒錐狀之 鑽蕊1 0 5結構，乃令後端之排屑溝1 0 4於鑽孔之末 段行程中，與微過孔孔壁之空間乃愈發減縮，致令粉屑 之排出性不良者。 <新型内容>M243285 V. Creation instructions (1) < Technical field of new type > This creation relates to a structure improvement design of a PCBfi: type drill bit, especially a structure improvement design of a miniature drill bit that can improve the stability and strength of a drill bit. . < Previous technology > According to current market conditions for diversified, high-layer, and high-density printed circuit board substrate materials, microvias on newly developed circuit boards typically have a diameter of 0.5 mm. Up to 0.25 mm, and this type of micro vias need to be drilled and formed by relying on high-precision micro drills. As shown in FIG. 5, the structure of the conventional micro drill bit is to grind two cutting edges 1 0 2 backward and obliquely at the drill point 1 0 1 of the drill needle 10, so that each cutting edge 1 0 2 follows the drill 1 The shaft of 0 extends backwards and spirals to form a transverse edge 1 0 3 and a chip removing groove 1 0 4. At the same time, the drill core 1 0 of the mandrel 1 0 5 extends obliquely backward from the drill point 1 0 1 In the type, or the "structure improvement of printed circuit board drill bits", as in the application for a new patent publication No. 3 2 4 2 8 9 patent, the drill core 1 0 5 extends from the drill point 1 0 1 backward obliquely to two The shape design of the inverted cone part of the segment, if it is such a cone-shaped drill core 105, because the structure near the drill point 101 is more slender, the stability of the drill bit when drilling is difficult to control. , Which causes the hole to be easily displaced or the needle broken; and its inverted cone-shaped drill core 105 structure is to make the chip flute at the rear end 104 in the final stroke of the hole, and The space of the micro-via hole wall is shrinking more and more, resulting in poor discharge of dust. < New content >
第5頁 M243285 五、創作說明（2) 本創作之主要 之結構改良設計， 前端向後延伸接連 持一適當等距之間 程中，皆可藉該勻 可大幅增強鑽針下 孔得到較高之孔位 <實施方式> 為使 貴審查 ，茲藉由下述具體 創作做一詳細說明 如第1圖及第 改良設計，主要包 碳化鎢超硬材料製 之鑽尖21處乃向 削刃2 2順鑽針2 及排屑溝2 4 ，惟 5 ； 如第3圖所示 後延伸接連於鑽身 邊保持一適當等距 5之前端乃形成一 ，如此構成，使鑽 而提供適當之強度 目的，乃在於提供一種P C β微型鑽頭 主要係令鑽針心軸處之鑽蕊，自鑽尖 於鑽身本體，令鑽蕊與橫刃之刀邊保 距，如此，乃令鑽針於鑽孔之整個行 稱之鑽蕊而提供適當之強度支樓，乃 鑽時之強度及定位之準確度，俾使鑽 精度表現且不易斷針者。 委員暸解本創作之目的'特徵及功效 之實批例，並配合所附之圖式，對本 ’說明如后： 2，所=;一種PCB微型鐵頭之結構 采用耐磨耗性能優異之 ==有二切削… 之；f干身向後延伸旋鋒 其特徵乃在於鑽針2 ^ 、杈刃2 貫訂2心軸處之鑽蕊2 ’該鑽蕊2 5乃俜白m，丨 自鑽尖21前端向 丄本體，7鑽蕊25鱼i生 之間距（如第4圖所；;買刀2 3，刀 較切削刃2 2錐度小 ，且鑽器2 頭於鑽孔時，得藉該=隹部2 5 1 支擇，乃有效地屏除: M243285 五、創作說明（3) 象產生，除可大幅增強鑽針2下鑽時之強度及定位之準 確度外，亦令鑽孔可得到較高之孔位精度表現，且鑽針 2不易有發生斷針之情事者。 另者，因該鑽蕊2 5與橫刃2 3之刀邊保持一適當 等距之間距，令鑽針2於鑽孔之後段行程中時，其粉屑 自排屑溝2 4排出之性能亦順暢無礙，使粉屑不致滯留 於鑽孔受橫刃2 3持續摩擦而形成焦渣，進而影響電路 板微過孔之孔壁品質。 此外，當鑽頭藉由鑽尖2 1及切削刃2 2初下鑽進 刀之後，該鑽蕊2 5之倒錐部2 5 1乃立即承受來自切 削刃2 2所產生之切削阻抗，並得順利導引鑽針2之行 進方向 ，使下鑽時之穩定度立即獲得極佳之控制，且其整體性 之鑽蕊2 5結構，亦增強鑽針2定位之準確度，使鑽孔 可得到較高之孔位精度表現。 綜上所述，誠可見本創作所為「PCB微型鑽頭之結 構改良」設計，確具有預期供鑽頭穩定下鑽及不易斷針 之效果，且整體手段運用尚屬首創實用，故為一合理之 新型至明，爰依法提出新型專利申請，懇祈 鈞局惠予 詳審，並賜准專利為禱，實感德便。 M243285 圖式簡單說明 第1圖為本創作之外觀示意圖。 第2圖為本創作中鑽針之端面示意圖。 第3圖為本創作中鑽針部分之剖面示意圖。 第4圖為本創作中鑽針前端部之局部放大示意圖。 第5圖為傳統微型鑽頭之結構示意圖。 早 - 1 2 3 4 5 ^ ο ο ο ο ο ο & 1 1 1 1 1—- 1 1 2 3 4 5 5 2 2 2 2 2 2 2 鑽針 •鑽尖 -切削刃 -橫刃 -排屑溝 -鑽蕊 -鑽身 -鑽針 -鑽尖 -切削刃 -橫刃 -排屑溝 -鑽蕊 -倒錐部Page 5 M243285 V. Creation Instructions (2) The main structural improvement design of this creation, the front end extends backwards in succession to maintain a proper equidistance distance, which can greatly enhance the lower hole of the drill pin to obtain a higher Hole position < Embodiment > In order to make your review more detailed, we will use the following specific creations to make a detailed description, as shown in Figure 1 and the improved design, mainly including tungsten carbide superhard material 21 points for cutting edges 2 2 drill bit 2 and chip groove 2 4, but 5; As shown in Figure 3, the back extension is next to the drill to maintain a proper equidistance. 5 The front end is formed into one, so that the drill provides appropriate strength. The purpose is to provide a PC β micro-drill mainly for the core of the drill core, from the point of the drill to the body of the drill body, so that the core of the drill and the edge of the cutting edge are kept away from each other. The entire row of holes is called the drill core to provide the appropriate strength support, which is the strength and positioning accuracy when drilling, so that the precision performance of the drill and the needle is not easy to break. The members understand the actual examples of the features and effects of the purpose of this creation, and cooperate with the attached drawings to explain this paragraph as follows: 2, so =; a PCB miniature iron head structure with excellent wear resistance == There are two cuttings ... of; the f-stem body extends the spine backwards, which is characterized by the drill pin 2 ^, the blade 2 and the drill core 2 at the 2 mandrel 2 'The drill core 2 5 is the white m, 丨 from the drill tip 21 front end toward the body, 7 drill cores and 25 fish spacing (as shown in Figure 4; buy a knife 2 3, the knife is smaller than the cutting edge 22 2 taper, and when the 2 drills are drilling, you must borrow the = 隹 部 2 5 1 Choice, which is effectively screened out: M243285 V. Creation instructions (3) The phenomenon is generated, in addition to greatly increasing the strength and positioning accuracy of the drill pin 2 when drilling, it also makes drilling available High accuracy of the hole position, and the needle 2 is not prone to broken needles. In addition, because the drill core 2 5 and the cutting edge of the cutting edge 23 maintain a proper equidistance, so that the drill 2 During the subsequent stroke of the drilling, the performance of the powder from the chip ditch 24 is also smooth, so that the powder will not stay in the hole and the coke will be formed by continuous friction of the cutting edge 2 3 In addition, the quality of the hole wall of the micro-via of the circuit board is affected. In addition, after the drill bit is drilled by the drill point 21 and the cutting edge 22, the inverted cone 2 5 of the drill core 2 5 is immediately subjected to The cutting resistance from the cutting edge 2 2 can smoothly guide the direction of travel of the drill pin 2, so that the stability when drilling is immediately controlled very well, and the overall drill core 2 5 structure is also enhanced. The accuracy of the positioning of the drill pin 2 enables the drilling to obtain a higher accuracy of the hole position. In summary, it can be seen that the design of the "Microstructure Improvement of PCB Miniature Bits" of this studio is indeed expected to provide stable drilling and The effect of the needle is not easy to break, and the overall use of the method is still the first of its kind. Therefore, it is a reasonable new type. It is based on the law. A new patent application is filed according to the law. . M243285 Brief description of the diagram. Figure 1 is a schematic diagram of the appearance of the creation. Figure 2 is a schematic diagram of the end face of the drill in the creation. Figure 3 is a schematic diagram of the section of the drill in the creation. Figure 4 is in the creation. Partially enlarged view of the drill tip Fig. 5 is a schematic diagram of the structure of a traditional micro-drill. Early-1 2 3 4 5 ^ ο ο ο ο ο ο & 1 1 1 1 1--1 Drill Pins · Drill Tips-Cutting Edges-Cross-Edges-Dust Removal Ditch