M440174 五、新型說明： 【新型所屬之技術領域】 一種高排屑性鑽頭’尤指使用於鑽孔作業中，利用增加退屑 槽之旋繞次數以大幅提升退屑槽末端之總容積，使退屑效果更為 提升之鑽頭。 【先前技術】 按，如第一圖所示習知鑽頭結構係具有一刀柄部4，該刀柄部 • 4 一侧延伸有一刀刃部3，該刀刀部3之末端係具有一靜點31，^ 於該靜點31二側形成有切削刃32 ,各切削刃32 一側分別朝向刀 柄部4旋繞凹設有螺距一致之退屑槽33，因此，切削刀犯之數量 越彡’其退賴33之數量也就越多，刀刀部3之橫斷面截面積也 v 就相對地變小，進而使制部3整體之強度相對下降，俾使鑽頭 於進行鑽孔時，因下壓進刀使刀刀部3產生f曲變形，造成中心 位置偏擺以及擴孔之情形發生，使鑽孔之精度大幅下降。 是以，要如何解決上述習知技術之問題與缺失，即為從 -· 相關行業之業者所亟欲研發之課題。 【新型内容】 —本創作之主要目的乃在於，增加鑽頭之退賴末端之碑 谷積’俾使鑽頭前端之二退屑槽相遇於末端高容積之 ^ 亦可達到更佳之退屬效果。 曰寻 為達上述目的，本創作之高觸性_係具有—刀刀部，該 刀力刀部末端係、具有—靜點，且該刀刀部遠離靜點—側係連接有刀Z ’该刀特末端於靜點—側斜向械有第—切胸， 為斜向形成有第二切削刀，第_切顧處為凹設有朝向刀柄2 3 M440174 繞之第-退屑槽，而第二切胸處為凹設有朝向刀柄部旋繞之第 -退屑槽’第-退屬槽之螺距為朝向刀柄部呈等雜繞，而第二 退屑槽之螺距為朝向刀柄部呈變距旋繞，使第—退屑槽朝刀柄^ 旋繞至-適當位置後㈣與第二退賴交會結合形成朝向刀㈣ 側旋魂之第三退，且第三退職之螺距係由刀刃部朝向刀柄 部呈逐漸縮小狀’以增加第三退·之容積，達到更佳之排屬效 果0 【實施方式】 請參閱第二圖以及第三圖所示，由财可清楚看出，本創作 之局排屬性鑽頭，該綱10係具有一刀刃部i，該刀刀部i末^ 係具有-靜點H，且該刀刀部i遠離靜點u側為連接有—刀括; ，該刀刃部1末端於靜點u _側斜向形成有第—切削刀12，宜 另側為斜向形成有第二切削刀13，第一切削刃12處為凹設有^ 刀柄部2旋繞之第-退·14，而第二切削刀13處為凹設有 刀柄部2旋繞之第二退顧15，第—退屑槽14之螺距為朝向 2呈等距旋繞，而第二退屑槽15之螺距為朝向刀柄部2呈變距 =，使第-退賴14朝刀柄部2旋繞至一適當位置後係會 ^退屑槽15交會結合形成朝向刀柄部2側旋繞之第_ 第=細之螺旋角係介於3〇至75度之間呈漸增心 =㈣靡係由刀刀部i朝向刀柄部2呈逐漸縮小狀以 =三卿6之容積’並使第三_6之寬度相 大於第-退㈣14以形成本創作之鑽頭1()。 一 當使料於補作之綱1G咖設工件（财 鑽孔作_，係將刀刃部1末端抵持於工件表面，以讓刀刃部i M440174 使經由第一切削刃12以及第二切削刃13切削所產生之碎屑八別 由第一切削刃12以及第二切削刃13 —側設置之第一退屬槽Μ及 第二退屑槽15排至第三退屑槽16，且因第三退屑槽16係具有較 大之容積，因此，係可同時容置第一退屑槽14及第二退屑样 之碎肩量’並續由第三退賴16排出至刀刀部i外，用以達曰 佳之排屑效果。M440174 V. New description: [New technical field] A high-dusting drill bit' is especially used in drilling operations, which increases the total number of windings at the end of the flutes by increasing the number of windings of the flutes. A bit with a higher lifting effect. [Prior Art] As shown in the first figure, the conventional drill bit structure has a shank portion 4 having a blade portion 3 extending from one side of the shank portion 4, and the end portion of the blade portion 3 has a static point 31. , a cutting edge 32 is formed on both sides of the static point 31, and each of the cutting edges 32 is wound around the shank portion 4 with a pitch groove 33 having a matching pitch. Therefore, the number of cutters is more ambiguous. The more the number of retreats 33 is, the cross-sectional area of the cross-section of the blade portion 3 is also relatively small, and the overall strength of the portion 3 is relatively lowered, so that when the drill bit is drilled, The press-in knife causes the blade portion 3 to undergo f-bend deformation, causing a situation in which the center position is yawed and reamed, and the accuracy of the drilling is greatly reduced. Therefore, how to solve the problems and shortcomings of the above-mentioned conventional technologies is the subject of research and development that is desired from the industry of related industries. [New content] - The main purpose of this creation is to increase the monument of the end of the bit of the drill. The product of the back of the drill bit meets the high volume at the end of the drill bit to achieve a better retreat effect. In order to achieve the above objectives, the high touch of the creation has a knife-knife portion, the end of the knife blade has a static point, and the knife portion is away from the static point - the side is connected with a knife Z' The end of the knife is at the static point - the side is inclined to have a first-cutting chest, and the second cutting blade is formed obliquely, and the first portion is concavely provided with a first-chip flute extending toward the shank 2 3 M440174 The second cutting portion is concavely provided with a first-retracting groove toward the shank portion. The pitch of the first-returning groove is equal to the shank portion, and the pitch of the second chip-removing groove is oriented. The shank is rotated around the shank, so that the first-backing groove is rotated toward the shank ^ to the appropriate position (four) combined with the second retreat to form a third retreat towards the knives (four) side, and the third retreat pitch The blade edge portion is gradually reduced toward the shank portion to increase the volume of the third retraction to achieve a better accommodating effect. 0 [Embodiment] Please refer to the second figure and the third figure for a clear view of the wealth. Out, the creation of the bureau is a property drill bit, the class 10 has a blade portion i, the blade portion i has a -static point H, and the blade portion i The side of the static point u is connected with a cutter; the end of the blade portion 1 is formed with a first cutting blade 12 obliquely on the side of the static point u _, and the second cutting blade 13 is formed obliquely on the other side. The cutting edge 12 is concavely provided with the first and second retracts 14 of the shank portion 2, and the second cutting blade 13 is provided with a second retracting 15 with the shank portion 2 being wound, and the first chip evacuation groove 14 The pitch is equidistantly wound toward the direction 2, and the pitch of the second chip-removing groove 15 is a variable pitch = toward the shank portion 2, so that the first-retraction 14 is rotated toward the shank portion 2 to an appropriate position. The chip flutes 15 are joined together to form a first to the right side of the shank portion 2, and the helix angle is between 3 〇 and 75 degrees, and is gradually increased. (4) 靡 is the blade portion i facing the shank portion. 2 is gradually reduced to = the volume of Sanqing 6 'and the width of the third_6 is greater than the first - back (four) 14 to form the drill bit 1 () of the present creation. Once the material is made into the workpiece 1G, the end of the blade portion 1 is abutted against the surface of the workpiece so that the blade portion i M440174 passes through the first cutting edge 12 and the second cutting edge 13 The chips generated by the cutting are arranged by the first cutting edge 12 and the first retracting groove 15 disposed on the side of the second cutting edge 13 and the second chip removing groove 15 to the third chip removing groove 16, and the third The chip-removing groove 16 has a large volume, so that the first chip-removing groove 14 and the second chip-removing shoulder amount can be accommodated at the same time and continuously discharged from the third retreat 16 to the blade portion i. In order to achieve the best effect of chip removal.
是以’本創作為可解決習知技術之不足與缺失，其關鍵技術 乃在於’本創作第三退屑槽16之螺距係由刀刀部丄朝向刀柄部2 呈漸縮狀’因第三退屑槽16錄鑽頭1〇之圈數增加 三退屑槽16之長度亦跟著增加，藉以使得第三退賴1 也跟著增加，因此’可同時容置第-退賴14及第二退屬槽\ 所排出之剌’因而可達到更佳之退雜果。 曰 【圖式簡單說明】It is based on the fact that 'this creation can solve the shortcomings and lacks of the conventional technology. The key technology is that the pitch of the third chip-removing groove 16 is gradually tapered from the knife blade to the shank portion 2 The number of laps of the three retreating slots 16 is increased by one. The length of the three retreating slots 16 is also increased, so that the third retreat 1 is also increased, so that the second retreat 14 and the second retreat can be accommodated at the same time. It is a sump that is discharged and thus achieves a better retreat.曰 [Simple description]
第一圖係為f知鑽頭之局部立體外觀圖。 第二圖係為本創作之立體外觀圖。 第-圖係為糊作另—肖度之立體外觀圖。 5 M440174 【主要元件符號說明】 10、 鑽頭 1、 刀刃部 11、 靜點 12、 第一切削刃 13、 第二切削刃 14、 第一退屑槽 15、 第二退屑槽 16、 第三退屑槽 2、 刀柄部 3、 刀刃部 31、 靜點 32、 切削部 33、 退屑槽 4、 刀柄部The first figure is a partial stereoscopic view of the drill bit. The second picture is a three-dimensional appearance of the creation. The first picture is a three-dimensional appearance of the other. 5 M440174 [Description of main component symbols] 10. Drill 1, blade part 11, static point 12, first cutting edge 13, second cutting edge 14, first chip-removing groove 15, second chip-removing groove 16, third retreat Chip pocket 2, shank portion 3, blade portion 31, static point 32, cutting portion 33, chip flute 4, shank portion