Μ3ι93381 五、新型說明： 【新型所屬之技術領域】 本創作係有關於切削鑽頭之鑽頭；尤指一種可提升鑽 頭結構強度及改善崩角情況的階梯鑽結構。 【先前技術】 按，欲在薄片板材上開設孔洞或大直徑之圓孔時，習 知方式是採用類如階梯鑽、圓穴鑽等形式之鑽頭，以加工 出所需圓徑之孔洞；其中，所述階梯鑽係如第六圖所示， 其主要係在一呈推拔狀的切削部（5)上，設有若干節呈階 梯狀漸次環繞於表面的刀刀部（50)，以及至少二道自切削 部（5)底緣呈螺旋狀延伸形成至切削部（5)頂端的導屑槽 (51)，切削部（5)頂端並成形為一尖錐面（52)，以增進鑽 穿的切削應力。藉由切削部（5)高速旋轉時的刀刃部（50) 與尖錐面（52)，以對工件進行鑽孔加工；鑽削產生的殘屑 ，則會經由導屑槽（51)快速排出。 惟，一般鑽削時，常會因為刀刃部（50)過度磨損、使 用者操作失當或是尖錐面（5 2)不慎觸及工件的較硬質地， 造成切削應力不均，導致切削進給時，刀刃部（50)或尖錐 面（52)易發生裂損或崩角等現象，造成刀具耗損。由於前 揭尖錐面（52)係與切削部（5) —體成形者，故當刀刃部 (50)或尖錐面（52)發生裂損或崩角等現象時，僅能將整組 鑽頭汰換更新，導致購置刀具成本提高，同時亦不符合現 代工程之環保訴求與效益。 【新型内容】 有鑑於此，本創作之主要目的，乃在提供一種可提升 M393381 鑽碩強度及改善崩角情況的階梯鑽結構，進而降低 購置成本。 _ |月的 茇是，本創作所述階梯鑽可提升鑽頭強度改善崩角之 結構，具有一呈推拔狀的切削部與一設於切削部^端 孔部，所述切削部上設有若干節呈階梯狀漸次環繞 的刀刀部及至少二道自切削部底緣呈螺旋狀延伸 削部頂端的導肩槽，·其特徵在，所述鑽孔部 : 於，削部頂端單節或是二節高度（長度）之刀刃部Π 適日卞結合於切削部頂端，或自切削部頂端分離。 前揭之切削部頂端，係開設有一接設口，於切削 面預设位置，開設有一連通接設口的銷接口；前揭之^ 二ί …對應接設口的接合桿，所述銷接口内緣， 二…/卩’可令表面設有對應螺紋部之螺牙部的定位銷 =於銷接^迫緊接合桿，使魏㈣固定位於切削部 創作設計，#鑽孔部呈絲㈣角的情形時，本 創作僅需更換鑽孔部，即可延長階 ^ :用二_梯鑽汰換，故可大幅降低 本，同日讀合現代工程之環保訴求與效益。 置成 迮咏貴審查委員能對本創作之構造特徵與功效有更 式說明如后。 —舉以下較佳實施例，並配合圖 【實施方式】 $參閱第-圖至第三圖所示，其中 創作第一實施例的立體圖；第二圖 二’、不 糸揭不弟一貫施例的組 M393381 • 設圖；第三圖係揭示第一實施例的剖面圖。 如圖所示，本創作所述階梯鑽（1)，具有一呈推拔狀 的切削部（10)與一結合於切削部（10)頂端而可適 換的鑽孔部（Π)，其中： 所述切削部（10)上，設有若干節呈階梯狀漸次環繞於 表面的刀刃部（100)，切削部（10)上並設有至少二道^切 . 削部（10)底緣經刀刃部（100)而呈螺旋狀延伸形成至切削 •部（10)頂端的導屑槽（101);切削部（10)頂端係向内開設 φ 有略主長型橢圓狀的接設口（102)，於切削部（1〇)表面 預設位置係開設有一可連通接設口（102)内側的銷接口 (103)，銷接口（103)内緣並形成有螺紋部（1〇4)。 所述鑽孔部（11)底緣與切削部（1〇)頂緣係為相同大小 者，所述鑽孔部（11)狀似形成於切削部（1〇)頂端的單節高 度（長度）（hi)之刀刃部（100)，鑽孔部（11)頂端成形2 一尖錐面（110)，以利鑽穿工件，鑽孔部（11)表面設有自 刀刃部（100)頂端之導屑槽（1〇1)所延續成形的導屑槽 _ (111 )，鑽孔部（11)後端設有一向後延伸且斷面可對應切 •削部（10)接設口（102)外緣的接合桿（112),接合桿（112) 上係設有一呈平直面狀的抵制面（113)。 結設時，係將鑽孔部之接合桿（112)伸至切削部 (10)的接設口（102)中，令接合桿（112)的抵制面（113)與 銷接口（103)相對，再以一表面設有可對應螺紋部（1〇4)之 ，牙部（30)的定位銷（3)置於切削部（1〇：)的銷接口（1〇3)， 藉由銷接口（丨03)之螺紋部（丨〇4)與定位銷（3)之螺牙部 (30)間的螺接作用，令定位銷（3)可定位於銷接口中 5 M393381 ，並抵制於接合桿（112)的抵制面（113)，以迫緊接合桿 (112)使其無法鬆脫，俾使鑽孔部〇1)可穩固定位於切削 部（1〇)之頂端，形成刀刃部（100)的第一節結構，俾能藉 其尖錐面（110)應用於工件的鑽孔加工，工件鑽削產生的 殘屬則可經由導屑槽（101)、011)迅速排出。 當鑽孔部（11)的尖錐面（110)呈現磨損崩角的情形時 ，使用者可將鑽孔部（1〇自切削部（1〇)之接設口（1〇2)處 分離，再重新更換組設新的鑽孔部（11)，進而延長階梯鑽 (1)的使用壽命，以利繼續使用。 ，由前述可知，當用以鑽削工件的尖錐面（110)呈現 磨損崩角的情形時，本創作僅需適時更換鑽孔部（11)，即 可延長階梯鑽（1)的使用壽命而繼續使用，無須汰換整組 ，梯鑽（1)，從而可大幅降低鑽頭的換料購置成本，並得 符合現代工程之環保訴求與效益。 再請參閱第四圖與第五圖所示，其中，第四圖係揭示 本創作第二實施例的立體圖；第五圖係揭示第二實施例的 組設圖。 第二實施例與第一實施例之結構相仿，其同樣具有呈 推拔狀的切削部（20)與結合於切削部（2〇)頂端而可適時分 離替換的鑽孔部（21)，切削部（2〇)上設有刀刃部（2〇〇)及 ，屑槽⑽），切削部⑽頂端開設有接設口⑽），切削 部（20)表面預設位置亦開設有一可連通接設口（2〇2)内側 的鎖接口（_ ;鑽孔部⑵）頂端成形為—尖錐面⑵〇)， 鑽孔部（21)後端設有對應所述接設口（2〇2)的接合桿（2ΐι) ’接合桿（212)上亦設有-呈平直面狀的抵制面（212)。 M393381 • 其知'徵在，所述鑽孔部（21)係狀似形成於切削部（2〇) 頂端約二節高度（長度）（h2)之刀刃部（2〇〇)。故於整體 高度（長度）及底緣相同之條件下，第二實施例鑽孔部 (21)之高（長）度較第一實施例的鑽孔部（丨丨）增加有（hi) 一（h2)單位長度，且鑽孔部（21)底緣斷面與切削部（2〇)頂 緣斷面，係大於第一實施例的鑽孔部（11)與切削部（2〇)者 . ’因此’接設口（202)内緣至切削部（2〇)表面的厚度，可 _ 設置為大於接設口（102)内緣至切削部（1〇)表面的厚度者 φ 。據此，令第二實施例可獲致較第一實施例更佳的剛性， 俾能提高切削部（20)與鑽孔部（21)結合時的結構強度，避 免切削部（2 0)頂端經由鑽孔部（21)而受到外部應力影塑， 導致歪曲、變形或斷裂破損等情況之發生。 以上所述說明，僅為本創作的較佳實施方式而已，意 在明確本創作的特徵，並非用以限定本創作實施例的範圍 ，本技術領域内的一般技術人員根據本創作所作的均等變 化，以及本領域内技術人員熟知的改變，仍應屬本創作涵 盖的範圍。 ' 【圖式簡單說明】 ' 第一圖：本創作第一實施例的立體圖。 第二圖：本創作第一實施例的組設圖。 第三圖：本創作第一實施例的剖面圖。 第西圖：本創作第二實施例的組設圖。 第五圖：本創作第二實施例的剖面圖。 第六圖：習知創作的立體圖。 7 M393381 【主要元件符號說明】 本創作： 1 階梯鑽； 200 刀刃部； 10 切削部； 201 導屑槽； 100 刀刃部； 202 接設口； 101 導屑槽； 203 銷接口； 102 接設口； 204 螺紋部； 103 銷接口； 21 鑽孔部； 104 螺紋部； 210 尖錐面； 11 鑽孔部； 211 接合桿； 110 尖錐面； 212 抵制面； 111 導屑槽； 3 定位銷； 112 接合桿； 30 螺牙部； 113 抵制面； 4 定位銷； 2 階梯鑽； 40 螺牙部； 20 切削部； 1 5 切削部； 51 導屑槽； 50 刀刃部； 52 尖錐面；Μ3ι93381 V. New description: [New technical field] This creation is about a drill bit for cutting a drill bit; especially a step drill structure that can improve the strength of the drill bit structure and improve the collapse angle. [Prior Art] When a hole or a large-diameter circular hole is to be formed on a sheet material, a conventional method is to use a drill such as a step drill or a round hole drill to machine a hole of a desired circular diameter; The step drill system is mainly shown in the sixth figure, and is mainly disposed on a push-shaped cutting portion (5), and is provided with a plurality of blade portions (50) which are stepped gradually around the surface, and At least two guide grooves (51) extending from the bottom edge of the cutting portion (5) to the top end of the cutting portion (5) are spirally formed, and the tip end of the cutting portion (5) is formed into a tapered surface (52) to enhance The cutting stress drilled. The workpiece is drilled by the blade portion (50) and the tapered surface (52) when the cutting portion (5) rotates at a high speed; the debris generated by the drilling is quickly discharged through the guide groove (51). . However, in general, when drilling, the cutting edge (50) is excessively worn, the user's operation is improper, or the tapered surface (5 2) inadvertently touches the hard surface of the workpiece, resulting in uneven cutting stress, resulting in cutting feed. The blade portion (50) or the tapered surface (52) is prone to cracking or chipping, which causes tool wear. Since the front taper surface (52) is formed integrally with the cutting portion (5), when the blade portion (50) or the tapered surface (52) is cracked or collapsed, only the entire group can be The replacement of the drill bit has led to an increase in the cost of purchasing the tool, and it does not meet the environmental appeals and benefits of modern engineering. [New content] In view of this, the main purpose of this creation is to provide a step drill structure that can improve the strength of the M393381 drill and improve the angle of collapse, thereby reducing the cost of purchase. The 茇 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯 阶梯a plurality of segments having a stepped and gradually encircling blade portion and at least two shoulder grooves having a spirally extending cutting edge at a bottom edge of the cutting portion, wherein the drilling portion: the cutting portion has a single section Or the blade section of the two-section height (length) is suitable for joining the tip of the cutting part or separating from the tip of the cutting part. The front end of the cutting portion is provided with a connecting opening, and a pin interface for connecting the connecting opening is formed at a predetermined position on the cutting surface; the front joint is connected to the connecting rod of the connecting port, the pin The inner edge of the interface, the second.../卩' can make the surface with the corresponding pin of the threaded part of the threaded part== pinning the joint bar, so that the Wei (four) fixed in the cutting part of the creative design, #Drilled part of the wire (4) In the case of the corner, the creation only needs to replace the drilling part, and the extension can be extended. ^: The two-step ladder is used for the replacement, so the environmental appeal and benefit of the modern project can be greatly reduced. The establishment of the review committee can explain the structural features and effects of the creation as follows. - The following preferred embodiment, with reference to the figure [embodiment] $ see the first to third figures, in which the perspective view of the first embodiment is created; the second figure 2', is not consistent with the case Group M393381 • Fig. 3 is a cross-sectional view showing the first embodiment. As shown in the figure, the step drill (1) of the present invention has a push-out cutting portion (10) and a drilled portion (Π) which is replaceable at the top end of the cutting portion (10), wherein The cutting portion (10) is provided with a plurality of segments having a stepped shape gradually surrounding the surface, and the cutting portion (10) is provided with at least two cuts. The bottom edge of the cut portion (10) a chip guide groove (101) extending spirally to the tip end of the cutting portion (10) via the blade portion (100); the tip end of the cutting portion (10) is opened inwardly with a slightly elongated main elliptical connection port (102), at a predetermined position on the surface of the cutting portion (1〇), a pin interface (103) that can communicate with the inner side of the connecting port (102), and an inner edge of the pin interface (103) is formed with a threaded portion (1〇4) ). The bottom edge of the drilled portion (11) and the top edge of the cutting portion (1) are the same size, and the drilled portion (11) is shaped like a single block height (length formed at the top end of the cutting portion (1〇) (hi) the blade portion (100), the top end of the drilling portion (11) is formed by a tapered surface (110) for drilling through the workpiece, and the surface of the drilling portion (11) is provided with a top end of the blade portion (100) The chip guide groove _ (111) formed by the guide groove (1〇1), the rear end of the drilling portion (11) is provided with a rearward extension and the cross section can correspond to the cutting and cutting portion (10) connection port (102) The outer edge of the joint rod (112), the joint rod (112) is provided with a flat surface resisting surface (113). When the knot is formed, the engaging rod (112) of the drilling portion is extended into the connecting port (102) of the cutting portion (10), so that the resisting surface (113) of the engaging rod (112) is opposite to the pin interface (103). And a positioning pin (3) having a tooth portion (1) corresponding to the thread portion (1〇4) is placed on the pin interface (1〇3) of the cutting portion (1〇:) by the pin The screwing action between the threaded portion (丨〇4) of the interface (丨03) and the threaded portion (30) of the positioning pin (3) enables the positioning pin (3) to be positioned in the pin interface 5 M393381 and resists The resisting surface (113) of the engaging rod (112) is pressed to engage the rod (112) so as not to be loosened, so that the drilling portion 〇1) can be stably fixed at the top end of the cutting portion (1〇) to form a cutting edge portion. The first section structure of (100) can be applied to the drilling of the workpiece by its tapered surface (110), and the residuals generated by the workpiece drilling can be quickly discharged through the guide vanes (101), 011). When the tapered surface (110) of the drilling portion (11) exhibits a wear and chipping angle, the user can separate the drilling portion (1〇 from the connecting portion (1〇2) of the cutting portion (1〇) Then, replace the new drilling part (11), and then extend the service life of the step drill (1) for further use. As can be seen from the foregoing, when the tapered surface (110) for drilling the workpiece is presented In the case of wear and chipping, the creation only needs to replace the drilling part (11) in time, and the service life of the step drill (1) can be extended to continue to use, without having to replace the whole set, the ladder drill (1), which can greatly Reducing the refueling cost of the drill bit, and meeting the environmental appeals and benefits of modern engineering. Please refer to the fourth and fifth figures, wherein the fourth figure reveals the perspective view of the second embodiment of the present creation; The figure shows a set of drawings of the second embodiment. The second embodiment is similar to the structure of the first embodiment, and has a push-out cutting portion (20) and a top end of the cutting portion (2〇). The drilled portion (21) is replaced in a timely manner, and the cutting portion (2〇) is provided with a blade portion (2〇〇) and chipping (10)), the cutting portion (10) is provided with a connecting port (10) at the top end thereof, and a predetermined position of the surface of the cutting portion (20) is also provided with a locking interface (_; drilling portion (2)) at the top of the connecting port (2〇2) Formed as a tapered surface (2) 〇), the rear end of the drilled portion (21) is provided with an engaging rod (2ΐι) corresponding to the connecting port (2〇2). The engaging rod (212) is also provided with a flattening Straight face resisting surface (212). M393381 • It is known that the drilled portion (21) is formed like a blade portion (2〇〇) formed at a height (length) (h2) of two ends of the cutting portion (2〇). Therefore, under the condition that the overall height (length) and the bottom edge are the same, the height (length) of the drilled portion (21) of the second embodiment is increased by (hi) one compared with the drilled portion (丨丨) of the first embodiment. (h2) the unit length, and the bottom edge section of the drilled portion (21) and the top edge section of the cutting portion (2〇) are larger than those of the drilled portion (11) and the cutting portion (2〇) of the first embodiment. The thickness of the inner edge of the connection port (202) to the surface of the cutting portion (2) can be set to be larger than the thickness φ of the inner edge of the connection port (102) to the surface of the cutting portion (1〇). Accordingly, the second embodiment can achieve better rigidity than the first embodiment, and the structural strength of the cutting portion (20) combined with the drilling portion (21) can be improved, and the tip end of the cutting portion (20) can be prevented from passing through. The drilled portion (21) is affected by external stress, which causes distortion, deformation, breakage, and the like. The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the present embodiment, and the average variation made by those skilled in the art according to the present creation. Changes that are well known to those skilled in the art, and still fall within the scope of this creation. ' [Simple description of the drawing] 'First figure: A perspective view of the first embodiment of the present creation. Second figure: a group diagram of the first embodiment of the present creation. Third Figure: A cross-sectional view of a first embodiment of the present creation. Cecixi: A set diagram of the second embodiment of the present creation. Fifth Figure: A cross-sectional view of a second embodiment of the present creation. Figure 6: A perspective view of a custom creation. 7 M393381 [Explanation of main component symbols] This creation: 1 step drill; 200 blade section; 10 cutting section; 201 chip guide groove; 100 blade section; 202 connection port; 101 chip guide groove; 203 pin interface; 102 connection port 204 threaded portion; 103 pin interface; 21 drilled portion; 104 threaded portion; 210 tapered surface; 11 drilled portion; 211 joint rod; 110 tapered surface; 212 resisting surface; 111 chip guide groove; 112 joint rod; 30 threaded part; 113 resisting surface; 4 positioning pin; 2 step drill; 40 threaded part; 20 cutting part; 1 5 cutting part; 51 chip guide groove; 50 blade part; 52 tapered surface;