201221255 六、發明說明： 【發明所屬之技術領域】 本發明係有關一種鑽針結構，特別是一種藉由多段螺旋傾角的調 整，使得鑽刃部前段具有對稱之雙切屑排出溝及鑽刃部後段具有單一 切屑排出溝設計之鑽針結構。 【先前技術】 印刷電路板之電子線路高密度與高精度的線細化發展，其鑽孔加 工已大s使用超小直徑的鑽頭，且市場對印刷電路板的高品質、高需 求里和快速供應賴爭下’要求__高精度、高進給速率良好 的孔壁品質及作業t不折_加工條件，已Μ遍的撼和需求；其 中為了提升作業效率和降低製造成本，對於在印刷電路板上的貫穿孔 鑽馨加工，乃是採複數片重疊印刷電路板進行貫穿孔鑽馨加工，因此 需使用越長之鑽頭，且鑽頭需具有足夠的強度和快速的排屑功能。 在傳統鑽針結構中，_成有二條相對向之蝴排出溝，且一般 鑽針慣用設計乃根據加工所需之容輕間、漏力與尾段漏、塞肩 之可承^程度設計固定單—_排出溝的職肖度，此種設計雖可使 般難度較低之加卫條件，然其缺點為當加王難度提高而需 力時，其級絲屑已_上限無法再調 正今侧设计瓶頸，同時鑽針之剛性並容易受到螺旋角度的影響。 德44^觀針結構巾’為了獲得較佳之_性，其鑽蕊採由鑽尖向 31Γ種正錐設計方式，此種鑽針因蕊厚的漸漸變大，使得鑽針 ^1^ ’卫間逐漸因此—般係使鑽針前端的切屑排出溝螺旋角 =蟬針後端Γ切眉排出溝螺旋角度較大’以藉由後段切屬排 Γ 長及容輕間的增加，解決鑽針後段容屑 ，然而此種較大切屑排出溝螺旋角度的設計易發 生威重尾&捲綱題，導致鑽針加工品㈣良與斷針問題。 201221255 由於鑽針之切屑排出溝的螺旋角度會影響鑽針的容屑空間與排屑 力’角度越大容屑空間越大，所以傳統另有—種切⑧排出溝的螺旋角 度前端大後削、的結構’藉以增加鑽針前端的容屑L然而此種後 端螺旋角度變小的設計與鑽針蕊厚漸漸變大使容屑空間逐漸減少的現 象相抵觸’使得鑽針後㈣有塞屑關題產生，易導致騎加工品質 不良與斷針問題。 义上述無論是單-螺旋角度、或職角度前端小後端大、或螺旋角 度前端大後端小的設計’均會有騎容輕狀小與實際铜需求不 符的問題，且皆會對加工產生不良之影響。201221255 VI. Description of the Invention: [Technical Field] The present invention relates to a boring needle structure, in particular to an adjustment of a multi-segment spiral inclination angle, such that the front section of the drill blade has a symmetrical double chip discharge groove and a rear section of the drill blade A burr structure with a single waste discharge groove design. [Prior Art] The high-density and high-precision line refinement of printed circuit boards has been developed, and the drilling process has been used to use ultra-small-diameter drill bits, and the market has high quality, high demand and fast on printed circuit boards. Supply 赖 下 _ _ _ _ _ high precision, high feed rate good hole wall quality and work t no folding _ processing conditions, has been rumbling and demand; in order to improve work efficiency and reduce manufacturing costs, for printing The through-hole drilling on the circuit board is a process of collecting a plurality of overlapping printed circuit boards for through-hole drilling, so that the longer the drill bit is to be used, the drill bit needs to have sufficient strength and fast chip removal function. In the traditional boring needle structure, _ has two opposite butterfly discharge grooves, and the general rig conventional design is designed according to the tolerance of the light, leakage and tail leakage, and the shoulder of the plug. Single-_ discharge ditch's job degree, although this design can make the harder conditions of the lower difficulty, but its shortcoming is that when the difficulty of the king is increased and the force is needed, the level of the wire has been _ the upper limit can not be adjusted again The bottleneck is designed on the side, and the rigidity of the bur is at the same time and is easily affected by the spiral angle. In order to obtain better symmetry, the Drill 44's needle-shaped structure towel is designed from the drill tip to the 31-inch cone. This kind of burr is gradually enlarged due to the thickness of the core, so that the drill needle ^1^ '卫Therefore, the spiral angle of the chip discharge groove at the front end of the drill pin is the same as that of the rear end of the 蝉 pin. The latter section of the chip, however, the design of the spiral angle of the larger chip discharge groove is prone to the weight of the tail & volume, leading to the problem of good and broken needles. 201221255 Because the spiral angle of the chip discharge groove of the drill pin will affect the chip space and the chip discharge force of the drill needle, the larger the angle is, the larger the chip space is. Therefore, the traditional spiral head angle of the cut 8 discharge groove is large and then cut. The structure 'in order to increase the chip front end of the drill L. However, the design of the rear end helix angle becomes smaller and the thickness of the drill pin gradually becomes larger and the chip space is gradually reduced, so that the screw (four) has a chip. The problem is caused by the problem, which is easy to cause poor riding quality and broken needles. The above-mentioned design, whether it is a single-helix angle, or a small front end with a small front end or a small front end with a spiral angle, has a problem that the riding capacity is small and the actual copper demand is inconsistent, and both will be processed. Have a bad effect.
【發明内容】 “為了解決上述問題，本發明目的之一係提供一種鑽針結構，其中 藉由多段職傾角的調整，使得鑽刀部前段具有對稱之雙排 ^，且鑽刃部後段則財-合流之單-_排出溝，以提高鑽針整體 剛性強度，具有增加容屑空間及排屑力的優點。 為了達到上述目的，本發明一實施例之鑽針結構包含：SUMMARY OF THE INVENTION "In order to solve the above problems, one of the objects of the present invention is to provide a burr structure in which the front section of the drill knives has a symmetrical double row by the adjustment of the plurality of positions, and the rear section of the drill blade is rich. - Confluence of the single--drainage groove to improve the overall rigidity of the drill pin, with the advantage of increasing the chip space and the chip removal force. In order to achieve the above object, the drill pin structure according to an embodiment of the invention comprises:
二广及-鑽刃部連接鑽柄部，鑽刃部由—鑽尖端螺旋設置有 切屑排出溝及-第二切屑排出溝，第—切麟出溝與第二 一出溝均包含至少-前段螺旋傾角與—後段螺旋傾角，1中 睛第二爾出溝呈對齡離:而4 後&螺浦角之苐二切4排出溝逐漸與第排出溝結合。-有 【實施方式】 圖1所示為本發明一實施例鑽針結構之外觀 示，鑽針結構Π)包含-鑽柄部12及―鑽刃部14連接^柄圖:圖所 刀部14由鑽尖端向後斜向研磨有二對稱之切削刃^， ，鑽 順鑽刀部14向後延伸旋繞以形成橫刀18及二螺 且各切削刀16 '、宁禆之二切屑排出 201221255 :，分別為第一切屑排出溝20及第二切屑 ===二包含-前段螺旋傾角二= Θ3為例，於此實施例尹，相 μ 192與後段螺旋傾角 排出溝之後段螺旋傾角㈣於 言，第二切屑 ，段螺旋傾角…第二切：=== 閱第一域排出溝20之螺旋傾角 ㈣，使得第:=!Γ22的前段螺旋傾角…與螺旋傾角 致使付第-切屑排出溝20與前段之第二切 詈溝狀態，而第二域排出溝22依據需求於鑽刀部η之-位 Ϊ有後段螺旋湖Θ3，由於與螺旋_ Θ丨不-致，因此將 =切眉·排出溝22逐漸與第一切屑排出溝2〇合 人The Erguang and - drill blade joints are connected to the drill shank portion, and the drill blade portion is provided with a chip discharge groove and a second chip discharge groove, and the first - the cutting groove and the second one groove both contain at least - the front portion The spiral inclination angle is the spiral angle of the rear section, and the second groove of the middle eye is in the opposite age: and the second and fourth discharge channels of the 4th & screw angle are gradually combined with the first discharge groove. - [Embodiment] FIG. 1 is a perspective view showing the structure of a drill pin according to an embodiment of the present invention. The burr structure 包含) includes a shank portion 12 and a boring portion 14 connected with a handle: a blade portion 14 A two-symmetrical cutting edge is obliquely slanted backward from the drill tip, and the drilling boring tool portion 14 is extended backward to form a transverse knives 18 and two snails, and each of the cutting knives 16' and Ning's two chips are discharged 201221255: For example, the first chip discharge groove 20 and the second chip === two include - the front segment spiral angle 2 = Θ 3, in this embodiment, Yin, phase μ 192 and the rear segment of the spiral dip are discharged after the spiral angle (four), Second chip, segment spiral inclination angle... second cut: === read the spiral inclination angle of the first domain discharge groove 20 (four), so that the front spiral angle of the first:=!Γ22... and the spiral inclination angle cause the first-chip discharge groove 20 The second cutting groove state of the front section, and the second domain discharge groove 22 has a rear section spiral lake Θ3 according to the demand of the drill knives η, and because the spiral _ Θ丨 does not cause, it will cut the eyebrows and discharge The groove 22 gradually merges with the first chip discharge groove 2
後之第-切屑·溝2〇與第二切麟域22 G 一切屑排出溝20及第二切屑排出溝22分離時的水準持與第 所-圖1ΓΓ本發明另一實施例鑽針結構之外觀平面示意圖，如圖 不，、中第一切屬排出溝22之後段螺旋傾角们小於前段螺旋傾 藉第角Θ 1、前段螺旋傾角0 2及後段螺旋傾角θ 3的適 田膽，使4之第二切雜出溝22與第—切屑排出溝Μ 二冓而後段之第二切屑排出溝22則逐漸與第-切屑排出溝2。 [S] 另-方面’第二切屑排出溝22之螺旋傾角的角度變化不限於上 =段式的設計，其可為多段式的設計，且第—切屑排崎Μ的螺旋傾 角亦不限於-種·，再者，前段職傾触後段螺魏㈣變換 201221255 螺旋傾自，L a至鑽77部尾端之任-位置，且前段螺旋傾角與後段 採用在错肖度亦可由5度至85度任意變化。亦即在本發明中，同時 、別卩14之任意位置調整第__切屑排出溝2()及第二切屬排出 ^ 了认下賴77部本身加工的研缝，以制剛性強化 整™細嘛嫩，以達 實二i:r縣發明鑽針結構與f知鑽針結構在鑽孔後孔位度之 ==4程能力指數(PlOeess Capa碰y index，CPK)表現比較圖，其The first-chip-ditch 2〇 and the second cutting-edge field 22 G are separated from each other, and the second chip discharge groove 22 is separated from the level of the second embodiment of the present invention. Schematic diagram of the appearance, as shown in Fig., the first stage of the discharge channel 22 after the spiral inclination angle is smaller than the front section of the spiral inclination angle Θ 1, the front section of the spiral inclination angle 0 2 and the rear section of the spiral inclination angle θ 3 of the appropriate field, so that 4 The second cutting groove 22 and the first chip discharging groove are second, and the second chip discharging groove 22 of the latter portion is gradually discharged from the first chip discharging groove 2. [S] The other aspect is that the angle change of the spiral inclination angle of the second chip discharge groove 22 is not limited to the upper=segment design, which may be a multi-stage design, and the spiral inclination angle of the first chip is not limited to - Kind, and further, the front stage of the post-sliding section of the Wei Wei (four) transformation 201221255 spiral tilting, L a to the end of the 77 end of the drill - position, and the front section of the spiral inclination and the rear section can also be used from 5 degrees to 85 Degree changes arbitrarily. That is, in the present invention, at the same time, the __chip discharge groove 2 () and the second genus discharge are adjusted at any position of the 卩 14 at the same time. Fine and tender, to Da Shi II i: r County invention bur needle structure and f know the rig structure after drilling the hole position == 4 process ability index (PlOeess Capa touch y index, CPK) performance comparison chart,
切届;fl 針與$知鑽針之鑽㈣為㈣毫米(mm)，習知鑽針結構之 r;^具有單—職纽，而本發賴針結_為-對稱雙溝合 二C排出溝之多段螺旋傾角設計，在圖3中，▲表示習知鑽 二白Ρκ表現，♦表示本發明鑽針結構之cpk表現，而〇則表 CPK平均值’由圖3可知本發明鑽針結構所表現出之CPK =於S知_結構之CPK值，亦即本發卿針結構具核佳之孔位 圖4 所不為本發明鑽針結構與習知鑽針結構所製作之孔壁粗梭度 g ess)表現比域，其+本發赚針與習知鑽針之継皆為〇3〇 ’習知鑽針結構之切屑排出溝具有單一螺旋角度，而本發明 ;二。Μ為—對稱雙溝合併為單-切賴㈣之纽螺旋傾角設 L德ίϊ4中’▲表示習知鑽針結構之孔壁粗链度表現，♦表示本發 、、”構之孔對磁度表現’而〇則表示各自之粗糙度平均值，由 圖4 JT知本發卿針、輯所纽出之赌婦度略低於習知鑽針結構 之孔壁=度表現’因此本發_針結構可達到與習知鑽針結構相同 之孔壁品質。 ,圖5所示為本發明鑽針結構與習知鑽針結構之釘頭(nail head)表現 比阜又圖其中本發明鑽針與習知鑽針之鑽徑皆為㈣毫米_)，習知 鑽針、’·》構之蝴排出溝具有單—職角度，而本發明鑽針結 [S1 6 201221255 ==:=溝之多纖_計，”， 頭現 結構之她二圖5可知本發明， 構可達到料崎料象，邮树明鑽針結 ’在本發” ’以多段職儲的角度使對稱雙溝合流 為早溝的技術’使得鑽針具有整體剛性強度強化的優點，但又可維持 與習知的_雙溝鑽制等的額帥及排眉力。Cut-off; fl needle and $ know the drill needle (four) for (four) millimeter (mm), the conventional drill needle structure r; ^ has a single-job, and the hairpin _ is - symmetric double groove two C The multi-segment spiral inclination design of the discharge groove, in Fig. 3, ▲ indicates the conventional 二 Ρ Ρ performance, ♦ indicates the cpk performance of the bur structure of the present invention, and 〇 indicates the CPK average ′ The CPK value of the structure is represented by the CPK value of the S-known structure, that is, the hole position of the hairpin structure of the present invention is not the thickness of the hole formed by the drill needle structure and the conventional drill needle structure. The shuttle g ess) performance ratio field, the + hair earning needle and the conventional drill needle are both 〇 3 〇 'the conventional burr structure of the chip discharge groove has a single helix angle, and the present invention; Μ———————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————— Degree performance 'and 〇 表示 表示 表示 表示 表示 表示 表示 表示 表示 表示 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图The needle structure can achieve the same wall quality as the conventional drill needle structure. Figure 5 shows the nail head performance of the drill needle structure of the present invention and the conventional drill needle structure. The drill diameter of the needle and the conventional drill needle are both (four) mm _), the conventional drill needle, the '·· structure of the butterfly discharge groove has a single-job angle, and the needle knot of the present invention [S1 6 201221255 ==:= ditch The multi-fiber _ meter,", the head of the structure of her two Figure 5 can be seen in the invention, the structure can reach the material of the raw material, the mail tree Ming drilling needle knot 'in the hair" 'multiple section of the storage angle to make the symmetrical double ditch The technique of merging into the early ditch makes the burd have the advantage of strengthening the overall rigidity and strength, but it can maintain the amount of handsome and eyebrows with the well-known _ double groove drilling system. .
以上所述之實施例僅係為說明本發明之技術思想及特點，其目的 在使熟習此項技藝之人士㈣瞭解本義之内容並據以實施，當不能 以之限林發明之專概g]，即大凡依本發明賴狄精神所作之均 等變化或修飾，仍應涵蓋在本發明之專利範圍内。 201221255 【圖式簡單說明】 圖1所7^為本發明—實施例鑽針結構之外觀平面示咅、圖。 圖2所示為本發明另一實施例鑽針結構之外觀平：意圖。 圖3所不為本發明鑽針結構與習知鑽 指數表現比較圖。 、’、°攝之實際綜合製程能力The embodiments described above are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art (4) to understand the contents of the original meaning and implement them according to the principle of the invention. Equivalent changes or modifications made by the spirit of the invention in the spirit of the invention are still to be included in the scope of the invention. 201221255 [Simple description of the drawings] Fig. 1 is a plan view showing the appearance of the burr structure of the present invention. Fig. 2 is a view showing the appearance of the burr structure according to another embodiment of the present invention: intention. Figure 3 is a comparison of the performance of the drill needle structure and the conventional drill index of the present invention. , ', °, the actual comprehensive process capability
表現=為本發明鑽釺結構與習知鑽針 結構所製作 之孔壁粗縫度 圖5所示為本發明鑽針結構與 【主要元件符號說明】 習知 鑽針結構之釘頭 表現比較圖 10 鑽針結構 12 鑽柄部 14 鑽刃部 16 切削刃 18 橫刃 20 第一切屑排出溝 22 第二切屑排出海 θ\ 螺旋傾角 Θ2 前段螺旋傾角 Θ3 後段螺旋傾角Performance = the rough wall degree of the hole wall made by the drill collar structure of the present invention and the conventional drill needle structure. FIG. 5 is a comparison of the nail head structure of the present invention and the [main component symbol description] 10 Drilling needle structure 12 Drilling shank 14 Drilling edge part 16 Cutting edge 18 Transverse blade 20 First chip discharge groove 22 Second chip discharge sea θ\ Spiral angle Θ 2 Front section of inclination angle Θ 3 Rear section of inclination angle