M270862 八、新型說明： 【新型所屬之技術領域】 本創作係有關於對鑽頭之切削能力改良結構，尤指有 關於一種修正為鑽點呈一點之鑽尖之鑽頭。 ^ 【先前技術】 - 傳統的鑽削作業之鑽頭如第一圖（a)、第一圖（b)所 示’其鑽頭10a包含一圓柱型的切削部20a與鑽身30a， 鑽身30a提供一對螺旋凹槽4〇a及一夾持部50a。此夾持 鲁部50a係供鑽孔工具之夾頭來固定。鑽頭10a的切削部 20a —般為圓錐形，尖端呈一陵線2ia，並由此延伸出一 對徑向相反的刀刃22a，該刀刃22a之延伸部位並與螺旋 凹槽40a相接。 上述之一般鑽頭l〇a由於該切削部20a為圓錐形在馨 入工件時形成極大之鑽孔阻力並易造成鑽點滑動，使鑽孔 效率不彰’加上逃屑設計不良，使鑽孔切削部2〇a鑿出的 春殘屑無法有效排出而留在鑽孔内造成更大阻力，並對鑽孔 作業造成二次阻力。 又由於習知與工作接觸之鑽尖呈一陵線21a，以此陵 線21a在接觸工件時，其鑽孔施工之定位易產生滑動現象 而不易準確，常造成鑽孔位置產生誤差。 【新型内容】 鑑於上述之習知鑽頭諸缺失，本案創作人以數十年本 業經驗，自行研發、苦心試驗，終於開發出本創作。本創 作並可經由自動機械而自動生產，達成一貫作業、一體成 5 M270862 全新設計，全新結構之一 、散熱能力及排屑能力之 型以及南速量產之特性，乃是一 種可增進鑽孔準確度、鑽削能力 鑽頭。 本：作之f要目的係在提供一種更具效 構，以其位於鑽頭之最前緣，且 f頭、、口 鑽尘，丧進-宁你力A 大錐點之頭端頂點的 鑽大W叙位錄；J^錐頂部來增 其切之刃：及切削角來增進鑽削能力；以槽: 達成南政熱及南排屑力之鑽頭。 【實施方式】 茲配合圖式將本創作較佳實施例詳細說明如下。 參閱第二圖，本創作之立體圖。其鑽頭4少包含. -鑽尖1G，係位於鑽頭之最前緣，且呈―尖錐點之頭 端頂點。 ' -錐頂部20，係設於該鑽尖1〇之下，其錐頂的錐㈣ _大於90度，而約没為1〇5度時為較佳之鑽頭j的攻角。 一頭部30，係承接該錐頂部2〇後，向下設置之柱狀 體， 一對切削部40，係於該錐頂部2〇開設一對刃部41，該 對刃部41沿該錐頂部20向下延伸一切削角42。 一導屑槽50，係自該鑽尖1〇沿著該錐頂部2〇至該頭部 30所開設之斜面。 一鑽身60，係以一内縮導角62承接該頭部3〇，具有至 少一條排屑螺線61。 6 • M270862 . 續請參閱第三圖及第四圖所示，依據上述構件，該鑽 頭1夾於電動工具之夾頭（圖中未示）後，始切削工件， 此時，該呈一點狀的鑽尖10可在工件上準確地鑽出一定位 點’之後’再由該錐頂部2〇上所設之切削部4〇之刃部41對 该工件鑽入，並由該切削部40刃部41相鄰的切削角42作更 —進一步的挖深，再藉由該導屑槽50快速地將該殘屑導入鑽 身60之排屑螺線61内，並藉由該排屑螺線61帶出該鑽孔的 • 工件表面。 再者，本案所設計之結構於鑽削過程中，該鑽頭1之 錐頂部20於接觸工件並旋轉至該導屑槽5〇的過程中，可形 成—極佳的散熱作用。 ^ 、由上述可知，本創作確實改進習知鑽頭之鑽點滑動、 鑽削工件過慢、及排屑不足原缺失，已符合專利申請要 件。惟以上所述者，僅為本創作之一較佳實施例而已，並 =來限定本㈣實施之_。即凡依摘作申請專利範 ♦圍所做的均等變化與修飾，皆為本創作專利範圍所涵蓋。 7 M270862 【圖式簡單說明】 * 第一圖（a)係習知鑽頭之俯視圖。 ' '第一圖（b)係第一圖（a)之前視圖。 第二圖 係本創作之立體圖。 • 第三圖 係第二圖之俯視圖。 第四圖 係第二圖之前視圖。 【主要元件符號說明】 φ [習知] 10a鑽頭 20a切削部 21 a陵線 22a刀刃 30a鑽身 40a排屑螺線 [本創作] _ 1鑽頭 10鑽尖 20錐頂部 21錐角 30頭部 40 切削部 41刃部 42切削角 50導屑槽 8 M270862 60鑽身 61排屑螺線 62内縮導角M270862 VIII. New type description: [Technical field to which the new type belongs] This creation relates to an improved structure for the cutting ability of a drill bit, especially a drill bit modified to a point at the point of the drill point. ^ [Prior art]-A conventional drill bit is shown in the first figure (a) and the first figure (b). The drill bit 10a includes a cylindrical cutting portion 20a and a drill body 30a. The drill body 30a provides A pair of spiral grooves 40a and a clamping portion 50a. The clamping lug portion 50a is fixed by a chuck of a drilling tool. The cutting portion 20a of the drill 10a is generally conical, and the tip thereof is a ridge line 2ia, thereby extending a pair of radially opposite cutting edges 22a, and the extending portions of the cutting edges 22a are in contact with the spiral groove 40a. Because the cutting part 20a is conical in the above-mentioned general drill 10a, it forms a great drilling resistance when it is inserted into the workpiece and easily causes the drill point to slide, which makes the drilling efficiency poor, and the poor chip escape design makes the drilling The spring debris cut out by the cutting portion 20a cannot be effectively discharged, leaving more resistance in the borehole and causing secondary resistance to the drilling operation. It is also known that the drill tip in contact with the work is a ridge line 21a, so when the ridge line 21a contacts the workpiece, the positioning of the drilling construction is prone to slippage and is not easy to be accurate, which often causes errors in the drilling position. [New content] In view of the lack of the above-mentioned conventional drill bits, the creator of this case, based on decades of industry experience, developed it by himself and carried out painstaking experiments to finally develop this creation. This creation can be produced automatically by automatic machinery, achieving a consistent operation, integrated into a new M270862 new design, one of the new structure, the type of heat dissipation and chip removal capabilities, and the characteristics of mass production at South Speed, which is a type of drilling that can improve drilling Accuracy, drilling capabilities. Ben: The main purpose of f is to provide a more effective structure, which is located at the foremost edge of the drill bit, and the f head, and the mouth drill dust, and it is lost-Ningyouli A big cone point of the top end of the drill W chronology; J ^ cone top to increase its cutting edge: and cutting angle to improve drilling ability; slot: to achieve the South Zhengzheng and south chip removal force drill. [Embodiment] The preferred embodiment of the present invention is described in detail below with reference to the drawings. Please refer to the second picture, a three-dimensional view of this creation. The drill bit 4 contains less.-The drill point 1G is located at the foremost edge of the drill bit and has a apex of the tip end of the point. -The top of the cone 20 is located below the drill tip 10, and the cone ㈣ of the cone top is greater than 90 degrees, and the angle of attack of the better drill j when it is about 105 degrees. A head 30 is a columnar body arranged downward after receiving the top 20 of the cone. A pair of cutting portions 40 is attached to the top 20 of the cone to open a pair of blade portions 41 along the cone. The top 20 extends downward by a cutting angle 42. A chip guide groove 50 is formed from the drill point 10 along the top of the cone 20 to the inclined surface opened by the head 30. A drill body 60 is adapted to receive the head 30 with a retracted lead angle 62 and has at least one chip removal spiral 61. 6 • M270862. Continue to refer to the third and fourth figures. According to the above components, the drill bit 1 is clamped by the chuck (not shown) of the power tool before cutting the workpiece. The drill point 10 can accurately drill a positioning point on the workpiece 'after', and then the blade portion 41 of the cutting portion 40 provided on the top 20 of the cone is drilled into the workpiece, and the cutting portion 40 The cutting angle 42 adjacent to the part 41 is further deepened, and then the debris is quickly introduced into the chip removing spiral 61 of the drill body 60 by the chip guide groove 50, and the chip removing spiral is used. 61 Takes out the surface of the drilled part. Furthermore, during the drilling process, the cone top 20 of the drill 1 can form an excellent heat dissipation during contact with the workpiece and rotating to the chip guide groove 50. ^ As can be seen from the above, this creation does improve the sliding of the drill point of the conventional drill bit, the drilling of the workpiece is too slow, and the lack of chip removal is missing, which has met the requirements for patent applications. However, the above is only one of the preferred embodiments of the present invention, and is intended to limit the implementation of this document. That is to say, all equal changes and modifications made according to the patent application scope are covered by the scope of the creation patent. 7 M270862 [Schematic description] * The first picture (a) is a top view of a conventional drill bit. '' First image (b) is a front view of the first image (a). The second picture is a three-dimensional view of this creation. • The third picture is a top view of the second picture. The fourth picture is a view before the second picture. [Description of main component symbols] φ [Knowledge] 10a drill bit 20a cutting part 21 a ling line 22a cutting edge 30a drill body 40a chip removal spiral Cutting part 41 Cutting edge part 42 Cutting angle 50 Chip guide groove 8 M270862 60 Drill body 61 Chip removal screw 62 Internally reduced lead angle