TWI579080B - Multi - stage drilling and tapping device - Google Patents
Multi - stage drilling and tapping device Download PDFInfo
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- TWI579080B TWI579080B TW104140103A TW104140103A TWI579080B TW I579080 B TWI579080 B TW I579080B TW 104140103 A TW104140103 A TW 104140103A TW 104140103 A TW104140103 A TW 104140103A TW I579080 B TWI579080 B TW I579080B
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Description
本發明係有關於鑽頭之技術領域，特別是指一種可同時進行鑽孔與攻內螺牙之多階式鑽孔及攻牙裝置。 The invention relates to the technical field of drill bits, in particular to a multi-stage drilling and tapping device capable of simultaneously drilling and tapping internal thread.
按，鑽孔攻牙過程，一般皆先使用鑽頭鑽出預設孔徑之槽孔後，再以螺絲攻於槽孔內徑面切削出內螺紋。上述工法必須先使用鑽頭鑽孔後，再更換另一螺絲攻刀具切削出內螺紋，整個步驟必須動用到兩種加工刀具，也必須在刀具更換的時候停止加工機運轉，如此；將使整個加工時間增加，加工效率及速度降低。如何能一次加工過程直接完成鑽孔及攻牙的目的，將可以大為改善加工的效率。而精準的鑽出預設孔徑之槽孔，更是保障槽孔孔徑精度的必要條件，而鑽頭上的切刃數量設定，將影響鑽孔效率及槽孔孔徑之精準度。 Pressing, drilling and tapping process, generally use the drill bit to drill the slot of the preset aperture, and then use the screw to tap the inner diameter surface of the slot to cut the internal thread. The above method must first use the drill bit to drill the hole, and then replace another screw tap tool to cut the internal thread. The whole process must use two kinds of machining tools, and the machine must be stopped when the tool is replaced. The time increases, the processing efficiency and speed decrease. How to directly complete the drilling and tapping in one process can greatly improve the processing efficiency. Accurate drilling of the slot of the preset aperture is a necessary condition to ensure the aperture accuracy of the slot, and the number of cutting edges on the drill bit will affect the drilling efficiency and the accuracy of the slot aperture.
若能將鑽頭及螺絲攻同時組合成單一刀具組，除了改善加工效率外，更可以藉由鑽頭的導引，使得螺絲攻在攻牙時得以獲得鑽頭鑽身的支撐，並讓攻牙的過程更為穩定及準確，不容易造成螺絲攻的斷裂問題。 If the drill bit and the tapping can be combined into a single tool set at the same time, in addition to improving the processing efficiency, the drill can be guided by the drill bit, so that the tapping can obtain the support of the drill bit during the tapping and the process of tapping It is more stable and accurate, and it is not easy to cause breakage of the screw tap.
習知使用鑽孔鑽頭與螺絲攻分階段加工的工法，明顯過於繁複。為此曾有業者將鑽孔鑽頭與螺絲攻合而為一， 如我國專利公告第M419631號之「同軸鑽孔攻牙裝置」。該前案之結構，主要包含一螺絲攻以及一裝設於螺絲攻前端的同軸鑽頭所構成，讓使用者可以一次完成鑽孔以及攻內螺牙的動作。但其結構上仍有其若干缺失，例如： It is obviously too complicated to use the method of drilling drill bit and screw tapping stage. For this reason, some practitioners have drilled the drill bit and the screw into one. For example, "Coaxial Drilling and Tapping Device" of China Patent Publication No. M419631. The structure of the previous case mainly comprises a screw tap and a coaxial drill bit mounted on the front end of the screw tap, so that the user can complete the drilling and the action of the internal thread at one time. However, there are still some defects in its structure, such as:
1.同軸鑽頭係以螺鎖方式與螺絲攻組合，而螺紋的作用不外乎螺緊及旋鬆，故上述前案僅能在螺緊方向使用，若反方向使用會造成鑽頭脫離螺絲攻的現象。但螺絲攻完成攻牙後必須反方向退出，此時將會造成鑽頭脫離螺絲攻的風險。 1. Coaxial drill bit is combined with screw tapping and screw tapping. The thread is only used for screwing and loosening. Therefore, the above case can only be used in the direction of screwing. If it is used in the opposite direction, it will cause the bit to break away from the tapping. phenomenon. However, after the tapping has completed the tapping, it must be reversed in the opposite direction, which will cause the drill bit to escape the screw attack.
2.前案之同軸鑽頭由圖式觀之，係以麻花鑽頭形態設計(雙鑽槽)，使用同軸鑽頭在鑽孔的過程中，同軸鑽頭會與槽孔內徑面，形成180度角位差的兩點接觸，也由於只有兩點的接觸，造成螺絲攻切削內螺牙的過程中，容易與槽孔形成軸向偏移的狀況。 2. The coaxial drill bit of the previous case is designed by the pattern, which is designed in the form of twist drill bit (double drill groove). During the drilling process, the coaxial drill bit will form a 180 degree angle with the inner diameter surface of the slot. The poor two-point contact is also due to the fact that only two points of contact cause the screw to tap into the internal thread during the cutting process, which tends to be axially offset from the slot.
3.周知鑽頭鑽攻時的阻力與鑽攻的孔徑大、小成正比。而前案同軸鑽頭為單一桿徑，導致鑽攻的過程中，必需承受最大的阻力，容易造成機具的負載，亦容易導致同軸鑽頭的損壞。 3. It is well known that the resistance of the drill bit is proportional to the larger and smaller diameter of the drill. The former coaxial drill bit is a single rod diameter, which leads to the maximum resistance during the drilling and attack, which is easy to cause the load of the machine and easily lead to damage of the coaxial drill bit.
有鑑於上述習知技藝之問題與缺失，本發明之一目的，就是在於提供一種可同時進行鑽孔與攻內螺牙，並具導引且低切削阻力之多階式鑽孔及攻牙裝置。 In view of the above problems and deficiencies of the prior art, it is an object of the present invention to provide a multi-step drilling and tapping device capable of simultaneously drilling and tapping internal threads with guiding and low cutting resistance. .
根據本發明上述目的，提供一種多階式鑽孔及攻 牙裝置，其包括一鑽頭以及一體形成於鑽頭表面之攻牙刃，其中：該鑽頭兩端分別具有一體成形之一鑽身及一鑽柄。該鑽身具有一尖端段、一徑縮段、一徑擴段、複數螺旋槽及複數切刃。 又該攻牙刃，係由複數道刀刃所組成，使各該刀刃以等間距設置於各切刃表面。藉由上述構件之組成，讓使用者可以一次完成鑽孔以及攻內螺牙的動作，並在過程中透過徑縮段與徑擴段階段性的攻鑽，降低切削阻力，且配合各切刃(攻牙刃)對螺孔內周面的穩定接觸，確保切刃及攻牙刃與螺孔自動導正校準，提升加工精度與操作效率提升等效益。 According to the above object of the present invention, a multi-step drilling and attacking is provided The dental device comprises a drill bit and a tapping edge integrally formed on the surface of the drill bit, wherein: the drill bit has an integrally formed one of the drill body and a drill shank respectively. The drill body has a tip end section, a diameter reduction section, a diameter expansion section, a plurality of spiral grooves and a plurality of cutting edges. Further, the tapping blade is composed of a plurality of blades, and the blades are disposed at equal intervals on the surfaces of the respective cutting edges. By the composition of the above-mentioned components, the user can complete the drilling and the action of the internal thread at one time, and reduce the cutting resistance through the tapping of the diameter reduction section and the diameter expansion section in the process, and cooperate with the cutting edges. (Tapping edge) Stable contact with the inner peripheral surface of the screw hole ensures the automatic alignment of the cutting edge and the tapping edge and the screw hole, and improves the machining accuracy and operation efficiency.
另；本案鑽頭切刃採用至少三道切刃的作法，主 要係利用三點穩固定位的特點，不容易在鑽孔的過程中受切削阻力的影響而位移造成擴孔現象，傳統鑽頭一般都採取二刃的設計，刀刃間距180度不夠穩固，而本案各刀刃間距120度的設計，將更容易獲的穩定的效果。 In addition; the drill cutting edge of this case uses at least three cutting edges, the main It is not easy to use the characteristics of three-point stable fixed position, it is not easy to be affected by the cutting resistance during the drilling process, and the displacement causes the hole expansion phenomenon. The traditional drill bit generally adopts the design of the two-blade, and the blade spacing is not stable enough, and the case is not stable enough. The design of the blade spacing of 120 degrees will make it easier to achieve a stable effect.
1‧‧‧鑽頭 1‧‧‧ drill bit
12‧‧‧鑽身 12‧‧‧ drilled
121‧‧‧尖端段 121‧‧‧ tip section
122‧‧‧徑縮段 122‧‧‧Shrinking section
123‧‧‧徑擴段 123‧‧‧Path expansion
124‧‧‧螺旋槽 124‧‧‧Spiral groove
125‧‧‧切刃 125‧‧‧ cutting edge
14‧‧‧鑽柄 14‧‧‧ drill handle
16‧‧‧擴孔部 16‧‧‧Reaming
162‧‧‧擴孔旋槽 162‧‧‧Reaming slot
164‧‧‧擴孔切刃 164‧‧‧Reaming cutting edge
2‧‧‧攻牙刃 2‧‧‧Tapping blade
22‧‧‧刀刃 22‧‧‧ Blade
3‧‧‧工件 3‧‧‧Workpiece
32‧‧‧螺孔 32‧‧‧ screw holes
322‧‧‧小徑段 322‧‧‧Small path
324‧‧‧大徑段 324‧‧‧ Large diameter section
326‧‧‧內螺牙 326‧‧‧ internal thread
328‧‧‧周緣 328‧‧‧ Periphery
第1圖 係本發明多階式鑽孔及攻牙裝置立體示意圖。 Figure 1 is a perspective view of a multi-stage drilling and tapping device of the present invention.
第2圖 係第1圖所示實施例另一視角示意圖。 Fig. 2 is a view showing another perspective of the embodiment shown in Fig. 1.
第3圖 係本發明多階式鑽孔及攻牙裝置實施例示意圖(一)。 Fig. 3 is a schematic view (1) of an embodiment of a multi-stage drilling and tapping device of the present invention.
第4圖 係第3圖所示實施例剖面示意圖。 Figure 4 is a schematic cross-sectional view of the embodiment shown in Figure 3.
第5圖 係本發明多階式鑽孔及攻牙裝置實施例示意圖(二)。 Figure 5 is a schematic view (2) of an embodiment of a multi-stage drilling and tapping device of the present invention.
以下請參照相關圖式進一步說明本發明多階式鑽 孔及攻牙裝置實施例。為便於理解本發明實施方式，以下相同零件係採相同符號標示說明。 Hereinafter, the multi-step drill of the present invention will be further described with reference to the related drawings. Hole and Tapping Device Embodiments. In order to facilitate the understanding of the embodiments of the present invention, the same parts are denoted by the same reference numerals.
請參閱第1至5圖所示，本發明之多階式鑽孔及 攻牙裝置，其包括一鑽頭1與一攻牙刃2，該攻牙刃2一體形成於鑽頭1表面。 Please refer to Figures 1 to 5 for the multi-stage drilling of the present invention. The tapping device includes a drill bit 1 and a tapping edge 2, and the tapping edge 2 is integrally formed on the surface of the drill bit 1.
上述鑽頭1，具有一體形成之一鑽身12、一鑽柄 14與一擴孔部16。所述鑽身12與鑽柄14係分別形成於鑽頭1相反之兩端，而擴孔部16則連接鑽身12與鑽柄14。 The drill bit 1 has a drill body 12 and a drill handle integrally formed 14 and a reaming portion 16. The drill body 12 and the shank 14 are respectively formed at opposite ends of the drill bit 1, and the reamer portion 16 connects the drill body 12 and the shank 14.
所述鑽身12包括一尖端段121、一徑縮段122、 一徑擴段123、複數螺旋槽124及複數切刃125。該尖端段122、徑縮段122、及徑擴段123依序形成於鑽身12相對於鑽柄14之另一端。各螺旋槽124與各切刃125則自尖端段122沿徑縮段122及徑擴段123表面，以等角度(120度)螺旋交錯配置形成。實施時，各切刃125係以三道為最佳。 The drill body 12 includes a tip end section 121, a diameter reduction section 122, A diameter expansion section 123, a plurality of spiral grooves 124 and a plurality of cutting edges 125. The tip end section 122, the reduced diameter section 122, and the radial expansion section 123 are sequentially formed on the other end of the drill body 12 with respect to the drill shank 14. Each spiral groove 124 and each cutting edge 125 are formed from the tip end section 122 along the surface of the diameter reduction section 122 and the diameter expansion section 123 at an equal angle (120 degrees). In practice, each cutting edge 125 is preferably three.
所述鑽柄14，其外輪廓略大於鑽身12，且外輪廓 可為多角形或圓形。 The shank 14 has an outer contour slightly larger than the drill body 12 and has an outer contour Can be polygonal or round.
所述擴孔部16包含複數擴孔旋槽162與複數擴孔 切刃164。各擴孔旋槽162與各擴孔切刃164，係延續各螺旋槽124與切刃125形成，且擴孔切刃164之刃徑自鑽身12朝鑽柄14遞增。 The reamer portion 16 includes a plurality of reaming grooves 162 and a plurality of reaming holes Cutting edge 164. Each of the reaming grooves 162 and the reaming cutting edges 164 are formed by continuing the spiral grooves 124 and the cutting edges 125, and the diameter of the reaming cutting edges 164 is increased from the drill body 12 toward the shank 14.
上述攻牙刃2係由複數道刀刃22所組成，各刀刃 22刃徑略大於鑽身12外徑，但小於擴孔切刃164外徑，並以等間距設置於徑擴段123之切刃125表面，且相距徑縮段122與鑽柄14一預設距離。實施時，各刀刃22刃徑大、小由中間朝兩端遞減。 The above-mentioned tapping blade 2 is composed of a plurality of cutting edges 22, each blade The 22 blade diameter is slightly larger than the outer diameter of the drill body 12, but smaller than the outer diameter of the reaming cutting edge 164, and is disposed at equal intervals on the surface of the cutting edge 125 of the radial expansion section 123, and is preset from the diameter reduction section 122 and the drill shank 14. distance. When implemented, each blade 22 has a large blade diameter and a small decrease from the middle toward both ends.
是以，上述即為本發明所提供一較佳實施例，多 階式鑽孔及攻牙裝置各部機構介紹，接著再將本發明之組裝方式及使用特點介紹如下：請參閱第3、4圖所示，當使用者欲在工件3上鑽設螺孔32時，僅需選擇具匹配攻牙刃2(刃徑)大小之本發明多階式鑽孔及攻牙裝置，即可透過鑽頭1於工件3上進行鑽設螺孔32作業。 Therefore, the above is a preferred embodiment of the present invention. Introduction to the various stages of the step drilling and tapping device, and then the assembly method and the use characteristics of the present invention are as follows: Please refer to Figures 3 and 4, when the user wants to drill the screw hole 32 on the workpiece 3. The multi-step drilling and tapping device of the present invention having the size of the matching tapping edge 2 (blade diameter) can be selected, and the screw hole 32 can be drilled through the drill 1 on the workpiece 3.
透過鑽頭1之尖端段122與工件3表面抵接，以 切削出一基準點，繼而鑽身12徑縮段122上之切刃125鑽攻工件3，先形成螺孔32小徑段322，由於徑縮段122具有較小之桿徑，位於該徑縮段122之切刃125，在鑽攻工件3形成螺孔32時，具有較低的阻力，能穩定的導引鑽身12後續徑擴段123上之切刃125，持續的對該螺孔32小徑段322進行鑽攻，而形成大徑段324。習知鑽頭鑽攻時的阻力與鑽攻的孔徑大、小成 正比，但本案徑擴段123鑽攻時，其作業係於螺孔32小徑段322的基礎上，繼續作擴孔鑽攻(接觸面積減少)，除了可使徑擴段123鑽攻的過程更為穩定外，更可降低切削的阻力。 Abutting the surface of the workpiece 3 through the tip end portion 122 of the drill bit 1 Cutting a reference point, and then cutting the cutting edge 125 on the diameter reducing section 122 of the drill body 12 to drill the workpiece 3, first forming a small diameter section 322 of the screw hole 32, and the diameter reduction section 122 has a smaller diameter, which is located in the diameter reduction section The cutting edge 125 of the segment 122 has a lower resistance when the drilling and impacting workpiece 3 forms the screw hole 32, and can stably guide the cutting edge 125 on the subsequent diameter expanding section 123 of the drill body 12, and continuously the screw hole 32. The small diameter section 322 performs a drilling attack to form a large diameter section 324. The resistance of the drill bit during drilling and the diameter of the drill is large and small. In proportion, but in the case of the diameter expansion section of 123, the operation is based on the small diameter section 322 of the screw hole 32, and continues to make the reaming drill (the contact area is reduced), in addition to the process of drilling the diameter expansion section 123. More stable, it can reduce the resistance of cutting.
當鑽頭1之尖端段122與鑽身12徑擴段123鑽入 螺孔32大徑段324後，位於鑽身12徑擴段123外表面之攻牙刃2，則隨徑擴段123鎖攻螺孔32小徑段322形成大徑段324的同時，於螺孔32大徑段324內周面進行內螺牙326的切削作業。 When the tip end section 122 of the drill bit 1 and the drill body 12 diameter expansion section 123 are drilled After the large diameter section 324 of the screw hole 32, the tapping edge 2 located on the outer surface of the radial expansion section 123 of the drill body 12 forms a large diameter section 324 along with the small diameter section 322 of the diameter expansion section 123. The inner peripheral surface of the large diameter section 324 of the hole 32 performs the cutting operation of the inner thread 326.
在整個攻牙程序中(如第4圖所示)，鑽頭1透過徑 縮段122之導引定位，以及徑縮段122及徑擴段123之分段切削，大幅降低切削過程的阻力外，配合鑽身12具有三道切刃125使其與螺孔32之大、小徑段322、324內徑面，分別形成三點接觸(A1、A2、A3)，以保持攻牙刃2與螺孔32大、小徑段322、324軸向平行，因而避免攻牙刃2與螺孔32大、小徑孔322、324的軸向發生偏移，讓攻出的內螺牙326深淺不一或孔徑不均勻的問題。 Throughout the tapping process (as shown in Figure 4), drill bit 1 is traversing the diameter The guiding and positioning of the constricted portion 122, and the segmental cutting of the constricted portion 122 and the radial expansion portion 123 greatly reduce the resistance during the cutting process, and the drilling body 12 has three cutting edges 125 which are larger than the screw holes 32. The inner diameter surfaces of the small diameter sections 322 and 324 respectively form three-point contacts (A1, A2, and A3) to keep the tapping edge 2 and the screw hole 32 large, and the small diameter sections 322 and 324 are axially parallel, thereby avoiding the tapping edge. 2, the screw hole 32 is large, and the small diameter holes 322, 324 are offset in the axial direction, so that the tapped internal screw 326 has different depths or uneven aperture.
另外，請參閱第5圖所示，當鑽頭1繼續深入螺 孔32，使鑽頭1的擴孔部16與螺孔32之槽口328抵接時，擴孔部16逐漸擴大之擴孔切刃164，會於螺孔32(槽口)周緣328進行切削擴孔，方便螺孔32完成後提供螺合元件螺鎖(圖中未示)。 In addition, please refer to Figure 5, when the drill bit 1 continues to penetrate the snail When the hole 32 is such that the reaming portion 16 of the drill 1 abuts against the notch 328 of the screw hole 32, the reaming cutting edge 164 which is gradually enlarged by the reaming portion 16 is cut and expanded at the peripheral edge 328 of the screw hole 32 (notch). The hole is provided to provide a screwing element screw lock (not shown) after the screw hole 32 is completed.
以上所述說明，僅為本發明的較佳實施方式而 已，意在明確本發明的特徵，並非用以限定本發明實施例的範圍，本技術領域內的一般技術人員根據本發明所作的均等變化，以及本領域內技術人員熟知的改變，仍應屬本發明涵蓋的範圍。 The above description is only a preferred embodiment of the present invention. The features of the present invention are intended to be illustrative, and not to limit the scope of the embodiments of the present invention. The scope of the invention is covered.
1‧‧‧鑽頭 1‧‧‧ drill bit
12‧‧‧鑽身 12‧‧‧ drilled
121‧‧‧尖端段 121‧‧‧ tip section
122‧‧‧徑縮段 122‧‧‧Shrinking section
123‧‧‧徑擴段 123‧‧‧Path expansion
124‧‧‧螺旋槽 124‧‧‧Spiral groove
125‧‧‧切刃 125‧‧‧ cutting edge
14‧‧‧鑽柄 14‧‧‧ drill handle
16‧‧‧擴孔部 16‧‧‧Reaming
162‧‧‧擴孔旋槽 162‧‧‧Reaming slot
164‧‧‧擴孔切刃 164‧‧‧Reaming cutting edge
2‧‧‧攻牙刃 2‧‧‧Tapping blade
22‧‧‧刀刃 22‧‧‧ Blade
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104140103A TWI579080B (en) | 2015-12-01 | 2015-12-01 | Multi - stage drilling and tapping device |
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| TW104140103A TWI579080B (en) | 2015-12-01 | 2015-12-01 | Multi - stage drilling and tapping device |
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| TWI579080B true TWI579080B (en) | 2017-04-21 |
| TW201720557A TW201720557A (en) | 2017-06-16 |
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| Country | Link |
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| TW (1) | TWI579080B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108400A (en) * | 2018-09-06 | 2019-01-01 | 基准精密工业（惠州）有限公司 | Screw tap |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200938328A (en) * | 2008-03-07 | 2009-09-16 | Shajeng Hardware Co Ltd | Method for making round hole cutting tool with titanium coating |
| TWM393381U (en) * | 2010-08-10 | 2010-12-01 | Shajeng Hardware Co Ltd | Structure for step drill bit capable of enhancing drill bit strength and improving collapse angle |
| TWM419631U (en) * | 2011-07-27 | 2012-01-01 | Lifu Bicycle Co Ltd | Coaxial drilling and tapping device |
-
2015
- 2015-12-01 TW TW104140103A patent/TWI579080B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200938328A (en) * | 2008-03-07 | 2009-09-16 | Shajeng Hardware Co Ltd | Method for making round hole cutting tool with titanium coating |
| TWM393381U (en) * | 2010-08-10 | 2010-12-01 | Shajeng Hardware Co Ltd | Structure for step drill bit capable of enhancing drill bit strength and improving collapse angle |
| TWM419631U (en) * | 2011-07-27 | 2012-01-01 | Lifu Bicycle Co Ltd | Coaxial drilling and tapping device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108400A (en) * | 2018-09-06 | 2019-01-01 | 基准精密工业（惠州）有限公司 | Screw tap |
| CN109108400B (en) * | 2018-09-06 | 2023-08-15 | 基准精密工业（惠州）有限公司 | Screw tap |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201720557A (en) | 2017-06-16 |
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