M270861 八、新型說明： 【新型所屬之技術領域】 . 本創作係為一種具有三切削部之鑽頭結構，尤指一種 將鑽頭的切削部設成三處切削面，並令鑽尾頂端呈點狀之 鑽尖，以改進鑽頭之鑽孔定位力、切削力與排屑力之鑽頭 結構者。 【先前技術】 _ 傳統的水泥石材鑽削作業之鑽頭如第一圖、第二圖所 不，其鑽頭10a包含一圓柱型的切削部2〇a與鑽身3〇a ， 鑽身30a提供一對螺旋凹槽4〇a及一夾持部5〇&。此夾持 部50a係供鑽孔工具之夾頭來固定。鑽頭1〇&的切削部 2〇a —般為圓錐形，尖端呈一陵線21a ，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1〇a由於該切削部邡&為 圓錐形在»入工件時形成極大之鑽孔阻力並易造成鑽點滑 參動’使鑽孔效率不彰，加上逃屑設計不良，使鑽孔切削部 2〇a鑿出的殘屑無法有效排出而留在鑽孔内造 ’絲鑽孔作錢成二次阻力；又由於習知與卫作接觸之 鑽尖呈:陵線21a，以此陵線21a在接觸工件時，·其鑽孔 之疋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】 〜本創作之目的， 產生之缺失予以改善 即在於針對上述習知鑽頭設計不佳所 ，嗣提供一種將鑽頭的切削部設成三 5 M270861 處刀削® i令鑽尾頂端呈點狀之鑽尖，以改進鑽頭之鑽 .孔定位力、切削力與排屑力之鑽頭結構者。 •冑關本㈣作為補作目的所利之技術手段及复構 .造特徵，兹謹再配合圖式所示之較佳實施例，詳細說明如 下· ㈣第三、四、五圖所示，本案之鑽頭結構主 要包含有切削頭10及鑽身20等部份；其中：M270861 8. Description of the new model: [Technical field to which the new model belongs]. This creation is a drill structure with three cutting sections, especially one that sets the cutting section of the drill into three cutting surfaces and makes the top of the drill tail point-like. The drill point is to improve the drill bit positioning force, cutting force and chip evacuation force. [Prior art] _ The traditional drill bit for cement and stone drilling is not shown in the first and second figures. The drill bit 10a includes a cylindrical cutting part 20a and a drill body 30a. The drill body 30a provides a The spiral groove 40a and a clamping portion 50 &. The holding portion 50a is fixed by a chuck of a drilling tool. The cutting portion 20a of the drill bit 10 is generally conical, and the tip is a ridge line 21a, thereby extending a pair of radially opposite cutting edges 22a, and the extending portion of the cutting edge 22a and the spiral groove 40a Connected. The general drill bit 10a mentioned above has a conical shape, which creates a large drilling resistance when it enters the workpiece and easily causes the drilling point to slip and move. This makes the drilling efficiency poor, and the chip escape design is poor , So that the residue cut out by the drilling and cutting portion 20a cannot be effectively discharged, and the wire is drilled into the borehole to make money into secondary resistance; because the drill tip that is in contact with Wei Zuo is: 21a, so when the Ling line 21a is in contact with the workpiece, the position of the drill hole is prone to slipping and is not easy to be accurate, often causing errors in the drilling position. [New content] ~ The purpose of this creation is to improve the defects that are caused by the poor design of the conventional drill bit, and to provide a cutting part of the drill bit at 3 M270861. Point-shaped drill points to improve the drill bit structure. Hole positioning force, cutting force and chip evacuation force. • Tong Guan Ben's technical means and reconstruction for the purpose of supplementary work. Features, I would like to cooperate with the preferred embodiment shown in the diagram to explain it in detail. ㈣ As shown in the third, fourth, and fifth diagrams, The drill bit structure mainly includes a cutting head 10 and a drill body 20; among them:
鲁 m讀頭10至少具有三處切削部u，每—切削部R 頂邊於切削頭10之中心相交形成尖狀鑽點12，各切削部u 之頂側及外側邊緣設成銳角之切削邊13，切削部U下方凹 陷部份則設成排屑面14者。 4该鑽身20係凹設有與切削部n等數之螺旋凹槽21，該 右干螺方疋凹槽21係依序以螺旋方式設置於鑽身加，螺旋凹 槽21之頂端則與切削頭1〇之切削利下方的排肩面14相接 i鑽身2G底端财夾持部22，以供電鑽夾頭夾持裝配 •者。 【實施方式】 藉由上述’之構造設計，本創作於切削頭1〇至少設有三 處切削部1卜且各切削部！！之頂侧及外側邊 切削邊心因此，當鑽頭對工件行鑽孔工作時，可以三處 切削。H1同時對工件切削，並且該呈銳角狀的切削邊财 加大與工件的接觸角度，進而增加切削部11之鑿挖力，以 利開馨挖孔並刮除工件殘屑；再由於該切削部！ 1之垂直部 份面積較大，且不司馨挖工作，故該切削則具有散熱的 6 M270861 功效；再者，由於切削頭10設有三處切削部u及其排屑面 14，並與螺旋凹槽21之頂端相接，故當切削部u開鑿工件 . 時’其產生之工件殘屑可由排屑面經三道螺旋凹槽而 -導出孔外；另外，該切削頭10的頂端呈尖狀鑽點12，使高 速轉動的鑽頭初與工件接觸時不會偏滑抖移，進而使鑽孔 位置更具準確性。 由上述可知，本創作可經由該鑽頭尖狀鑽點12之設計 參，可使其準確地在工件作鑽孔位置之定位，且鑽頭三處切 削部11及其銳角的切削邊13，更能增益其馨刮效率，而创 刮之工件殘屑更可被三道螺旋凹槽21順利排出工件孔洞外 側，由是本案確實改進習知鑽頭鑽削工件過慢及排肩不足 之缺失’並已符合專利申請要件。惟以上所述者，僅為本 創作之-較佳實施例而已，並非用來限定本創作實施之範 圍即凡依本創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。 M270861 【圖式簡單說明】 第-圖係'習知鑽頭之俯視圖。 圖係第-圖之前視圖。 :二圖係 '本創作較佳實施例之立體圖。 :四圖係第三圖之俯視圖。 弟五圖係第三圖之前視圖。 【主要元件符號說明】 [習知] 10a 鑽頭 20a 切削部 21a 陵線 22a 刀刃 30a 鑽身 φ 40a 螺旋凹槽 50a 夾持部 [本創作]义 10 切削頭 11 切 削部 12 鑽點 13 切 削邊 14 排屑面 20 鑽身 21 螺 旋凹槽 22 夾持部The read head 10 has at least three cutting portions u. Each of the top edges of the cutting portion R intersects with the center of the cutting head 10 to form a pointed drill point 12, and the top sides and outer edges of each cutting portion u are set at acute angle cutting edges. 13. The recessed part under the cutting part U is set as a chip discharge surface 14. 4 The drill body 20 is concavely provided with a spiral groove 21 equal to the cutting portion n. The right dry spiral square groove 21 is sequentially provided in a spiral manner on the drill body, and the top of the spiral groove 21 is The shoulder surface 14 under the cutting edge of the cutting head 10 is connected to the drill body 2G bottom end wealth holding part 22, and the power supply drill chuck is used for clamping and assembly. [Embodiment] With the above-mentioned structural design, this creation is provided with at least three cutting sections 1 and each cutting section on the cutting head 10! !! The top side and the outer side of the cutting edge center can be cut in three places when the drill drills the workpiece. H1 cuts the workpiece at the same time, and the sharp-edged cutting edge increases the contact angle with the workpiece, thereby increasing the digging force of the cutting portion 11 to facilitate digging holes and scraping off the workpiece debris; unit! The vertical part of 1 has a large area and does not work as a digger. Therefore, the cutting has a heat dissipation effect of 6 M270861. Furthermore, because the cutting head 10 is provided with three cutting parts u and its chip discharge surface 14, and is connected with the spiral The top ends of the grooves 21 are connected, so when the cutting part u cuts a workpiece, the workpiece debris generated by the cutting surface can be led out of the hole by three spiral grooves; in addition, the top end of the cutting head 10 is pointed. The shape of the drilling point 12 prevents the high-speed rotating drill bit from slipping when it first contacts the workpiece, thereby making the drilling position more accurate. It can be known from the above that the design parameters of the drill's pointed drill point 12 can be used to accurately locate the drilling position on the workpiece, and the three cutting parts 11 of the drill and the cutting edges 13 at acute angles are more capable. Increase its scraping efficiency, and the scraps of the scraped workpiece can be smoothly discharged from the outside of the workpiece hole by the three spiral grooves 21, so this case does improve the lack of slow drilling and insufficient shouldering of the conventional drill bit. Meet the requirements of patent applications. However, the above are only the preferred embodiments of this creation, and are not intended to limit the scope of the implementation of this creation, that is, all equal changes and modifications made in accordance with the scope of the patent application for this creation are within the scope of this creation Covered. M270861 [Brief description of the diagram] The first figure is the top view of the 'conventional drill'. The diagram is a front view of the diagram. : The second picture is a three-dimensional view of the preferred embodiment of this creation. : The fourth figure is the top view of the third figure. The fifth figure is a front view of the third figure. [Description of main component symbols] [Knowledge] 10a drill bit 20a cutting part 21a ridge line 22a blade 30a drill body φ 40a spiral groove 50a clamping part [this creation] meaning 10 cutting head 11 cutting part 12 drilling point 13 cutting edge 14 Chip removal surface 20 Drill body 21 Spiral groove 22 Clamping part