TWI418430B - Drill bit structure with single blade - Google Patents
Drill bit structure with single blade Download PDFInfo
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- TWI418430B TWI418430B TW100102604A TW100102604A TWI418430B TW I418430 B TWI418430 B TW I418430B TW 100102604 A TW100102604 A TW 100102604A TW 100102604 A TW100102604 A TW 100102604A TW I418430 B TWI418430 B TW I418430B
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Description
本發明係有關一種單刃鑽針結構，特別是一種具有一組弦形刀面與切屑排出溝之鑽針結構。The present invention relates to a single-edged burr structure, and more particularly to a lance structure having a set of chord-shaped flank surfaces and chip discharge grooves.
印刷電路板之電子線路高密度與高精度的線細化發展，其鑽孔加工已大量使用超小直徑的鑽頭，且市場對印刷電路板的高品質、高需求量和快速供應的競爭下，要求鑽頭達到高精度、高進給速率、良好的孔壁品質及作業中不折斷的加工條件，已是普遍的期望和需求；其中為了提升作業效率和降低製造成本，對於在印刷電路板上的貫穿孔鑽鑿加工，乃是採複數片重疊印刷電路板進行貫穿孔鑽鑿加工，因此需使用越長之鑽頭，且鑽頭需具有足夠的強度和快速的排屑功能。The high-density and high-precision line refinement of electronic circuits on printed circuit boards has led to the extensive use of ultra-small-diameter drill bits in the drilling process, and the market is competing for high quality, high demand and rapid supply of printed circuit boards. It is a common expectation and demand to require the drill to achieve high precision, high feed rate, good hole wall quality and unbroken machining conditions in the operation; in order to improve work efficiency and reduce manufacturing costs, on the printed circuit board Through-hole drilling is the process of drilling a number of overlapping printed circuit boards for through-hole drilling, so the longer the drill bit is used, the drill bit needs to have sufficient strength and fast chip removal.
現行一般鑽針結構係採用兩組對稱刀面及排屑溝設計，此種鑽針結構為現行常見之業界產品，相關品檢及加工設備適用性較佳，然而此種雙對稱刀面及雙排屑溝的結構在設計上變化度較少，且因鑽針加工研削量大，容易發生鑽針剛性強度變弱的問題。The current general burr structure adopts two sets of symmetrical flank and chip sulcus design. This burr structure is a common industry product, and the relevant quality inspection and processing equipment has better applicability. However, this double symmetrical knives and double The structure of the chip flute is less changed in design, and the rigidity of the drill pin is weakened due to the large amount of grinding of the drill bit.
早期單刃鑽針結構係採用一組刀面及排屑溝的設計，其鑽針加工研削量較小，因此剛性較強；但因僅單一切屑溝設計限制較多，且易發生排屑不良，及使用後鑽針磨損過快與斷針問題。另一方面，由於鑽針的外觀幾何較特殊，現行業界使用之品檢、鑽孔與刀面研磨設備均無法直接使用此種設計之鑽針結構，需透過量身訂製檢驗設備才可使用，因此製作及檢驗上較為不便。The early single-edged burr structure adopts a set of knives and chip grooves. The boring process has a small amount of grinding, so the rigidity is strong. However, due to the design limitation of only a single sipe, it is prone to chip removal. Poor, and the needle is worn too fast and broken after use. On the other hand, due to the special geometry of the drill, the current industry's inspection, drilling and knife-grinding equipment cannot directly use the burr structure of this design, and it is necessary to use tailor-made inspection equipment before use. Therefore, it is inconvenient to make and test.
為了解決上述問題，本發明目的之一係提出一種單刃鑽針結構，其鑽刃部具有一弦形刀面與一切屑排出溝，由於鑽針加工研削量較小，故剛性較一般雙對稱刀面與切屑排出溝設計強，又因其外觀幾何設計，可克服習知單刀面與切屑排出溝設計易發生排屑不良、使用後刀具磨損過快與斷針問題，同時現行業界使用之品檢、鑽孔與刀面研磨設備均可直接使用本發明之單刃鑽針結構，具有實用性佳之優點。In order to solve the above problems, one of the objects of the present invention is to provide a single-edged burr structure having a chord-shaped knives and all-dust discharge grooves. Since the boring is less developed, the rigidity is more bisymmetrical. The design of the blade surface and the chip discharge groove is strong, and because of its external geometric design, it can overcome the conventional single-blade surface and chip discharge groove design, which is prone to chip failure, excessive tool wear and needle breakage after use, and the current industry products. The single-edge burr structure of the present invention can be directly used for the inspection, drilling and flank grinding equipment, and has the advantages of practicality.
為了達到上述目的，本發明一實施例之單刃鑽針結構，包含：一鑽柄部；以及一鑽刃部連接鑽柄部，其中以鑽刃部的一迴轉軸線為中心，在鑽刃部的一外周面螺旋形成一條切屑排出溝，切屑排出溝由鑽刃部之一前端朝向鑽柄部螺旋延伸，且在鑽刃部的前端形成一弦形刀面，弦形刀面之邊界包含一切削邊及一支撐邊，該支撐邊的兩端部與迴轉軸線分別連線所構成之夾角大於180度。In order to achieve the above object, a single-edged burr structure according to an embodiment of the present invention comprises: a shank portion; and a drill blade portion connecting the shank portion, wherein a drilling axis of the drilling edge portion is centered at the drilling edge portion An outer peripheral surface spiral forms a chip discharge groove, and the chip discharge groove is spirally extended from a front end of the drill blade portion toward the shank portion, and a chord-shaped blade surface is formed at the front end of the drill blade portion, and the boundary of the chord-shaped blade surface includes a The cutting edge and a supporting edge, the connecting ends of the supporting edge and the rotation axis respectively form an angle greater than 180 degrees.
圖1所示為本發明一實施例單刃鑽針結構立體示意圖，如圖所示，單刃鑽針結構10包含一鑽柄部12及一鑽刃部14連接鑽柄部12，鑽刃部14具有一外周面141，從鑽刃部14的前端朝向鑽柄部12以鑽刃部14的迴轉軸線O為中心在外周面141切一條呈螺紋旋轉之切屑排出溝16，藉以在鑽刃部14的前端形成一弦形刀面18；請同時參閱圖2所示為本發明一實施例單刃鑽針結構之前端面示意圖，如圖所示，弦形刀面18之邊界包含一切削邊181及一支撐邊182，其中切削邊181即為切屑排出溝16之壁面161的前緣，又支撐邊182的兩端部A、B與迴轉軸線O分別連線所構成的夾角大於180度，亦即弦形刀面18的面積大於鑽刃部14之最大圓剖面142的一半。1 is a perspective view showing the structure of a single-edged burr according to an embodiment of the present invention. As shown, the single-edged burr structure 10 includes a shank portion 12 and a drill portion 14 connected to the shank portion 12, the cutting edge portion. 14 has an outer peripheral surface 141, and a chip discharge groove 16 which is threadedly rotated on the outer peripheral surface 141 from the front end of the drill blade portion 14 toward the shank portion 12 with the rotation axis O of the cutting edge portion 14 as a center, thereby being drilled in the cutting edge portion The front end of the 14 is formed with a chord-shaped flank 18; please also refer to FIG. 2, which is a front end view of a single-blade burr structure according to an embodiment of the present invention. As shown, the boundary of the chord-shaped flank 18 includes a cutting edge 181. And a supporting edge 182, wherein the cutting edge 181 is the leading edge of the wall surface 161 of the chip discharge groove 16, and the angle formed by the connecting ends A and B of the supporting edge 182 and the rotation axis O respectively is greater than 180 degrees. That is, the area of the chord-shaped flank 18 is greater than half of the largest circular section 142 of the cutting edge portion 14.
接續上述說明，由於此單刃鑽針結構10採用一組弦形刀面18與一組切屑排出溝16的設計，鑽針加工研削量較小，因此剛性較一般雙對稱刀面及排屑溝的鑽針結構強；又，由於弦形刀面18具有較長之支撐邊182，於進行鑽孔加工時，具要較長之外緣部分支撐整個鑽孔的大小，並克服使用後刀具磨損過快與斷針問題；再者，此單刃鑽針結構10的外觀幾何設計可使用現行業界所使用之品檢、鑽孔與刀面研磨設備，而不需經過特意之修改，因此具有實用性佳之優點。Following the above description, since the single-edged burr structure 10 adopts a set of chord-shaped knives 18 and a set of chip discharge grooves 16, the boring process is less developed, so the rigidity is more than the general double-symmetric scalpel and the swarf groove. The burr structure is strong; in addition, since the chord-shaped flank 18 has a long supporting edge 182, the longer outer edge portion supports the size of the entire drilling hole during the drilling process, and overcomes the wear of the tool after use. The problem of too fast and broken needles; in addition, the geometric design of the single-edged burr structure 10 can use the quality inspection, drilling and scalpel grinding equipment used in the industry, without special modification, so it is practical. The advantage of good sex.
圖3所示為本發明單刃鑽針結構與習知具雙對稱刀面之鑽針結構的精度表現比較圖，其中本發明單刃鑽針與習知鑽針之鑽徑皆為0.15毫米(mm)，習知鑽針結構具有雙對稱刀面及切屑排出溝，而本發明單刃鑽針結構則為一具有弦形刀面之鑽針結構，在圖3中，▲表示習知鑽針結構之精度表現(Avg.+3σ)，◆表示本發明單刃鑽針結構之精度表現(Avg.+3σ)，由圖3可知本發明單刃鑽針結構所表現出之(Avg.+3σ)數值低於習知鑽針結構之數值，亦即本發明單刃鑽針結構具有較佳之精度表現。3 is a comparison diagram of precision performance of a single-edged burr structure of the present invention and a conventional burr-shaped burr structure, wherein the single-edged burs of the present invention and the conventional burs have a diameter of 0.15 mm ( Mm), the conventional drill needle structure has a double symmetric cutter surface and a chip discharge groove, and the single-edged drill needle structure of the present invention is a drill needle structure having a chord-shaped cutter surface. In FIG. 3, ▲ indicates a conventional drill needle. Accuracy of structure (Avg.+3σ), ◆ represents the precision performance (Avg.+3σ) of the single-edged burr structure of the present invention, and it can be seen from Fig. 3 that the single-edged burr structure of the present invention is exhibited (Avg.+3σ) The value is lower than the value of the conventional drill pin structure, that is, the single-edged drill pin structure of the present invention has better precision performance.
圖4所示為本發明單刃鑽針結構與習知具雙對稱刀面之鑽針結構所製作之孔壁粗糙度(Roughness)表現比較圖，其中本發明單刃鑽針與習知鑽針之鑽徑皆為0.15毫米(mm)，習知鑽針結構之切屑排出溝具有雙對稱刀面及切屑排出溝，而本發明單刃鑽針結構則為一具有弦形刀面之鑽針結構，在圖4中，▲表示習知鑽針結構之孔壁粗糙度表現，◆表示本發明單刃鑽針結構之孔壁粗糙度表現，而○則表示各自之粗糙度平均值，由圖4可知本發明單刃鑽針結構所表現出之孔壁粗糙度略低於習知鑽針結構之孔壁粗糙度表現，因此本發明單刃鑽針結構可達到與習知鑽針結構相同等級之孔壁品質。4 is a comparison diagram of a hole wall roughness (Roughness) performance of a single-edged burr structure of the present invention and a conventional burr-shaped burr structure, wherein the single-edged bur and the conventional bur The drill diameter is 0.15 mm (mm), and the chip discharge groove of the conventional drill needle structure has a double symmetric blade surface and a chip discharge groove, and the single-blade drill needle structure of the present invention is a drill needle structure having a string-shaped cutter surface. In Fig. 4, ▲ indicates the hole wall roughness performance of the conventional burr structure, ◆ indicates the hole wall roughness performance of the single-edged burr structure of the present invention, and ○ indicates the average roughness of each, as shown in Fig. 4. It can be seen that the single-edged burr structure of the present invention exhibits a wall roughness slightly lower than that of the conventional burr structure, so that the single-edged burr structure of the present invention can achieve the same level as the conventional boring structure. Hole wall quality.
綜合上述，在本發明中，鑽針採用一組刀面與切屑排出溝之鑽刃部，且刀面形狀設計為弦形刀面，其優勢為鑽針加工研削量較小，故剛性較一般雙對稱刀面與切屑排出溝設計強，又因其外觀幾何設計，可克服習知單刀面與切屑排出溝設計易發生排屑不良、使用後刀具磨損過快與斷針問題，同時現行業界使用之品檢、鑽孔與刀面研磨設備均可直接使用本發明之單刃鑽針結構，具有實用性佳之優點。In summary, in the present invention, the drill needle adopts a set of cutter faces and a cutting edge portion of the chip discharge groove, and the shape of the cutter surface is designed as a chord-shaped cutter surface, and the advantage is that the drilling needle processing has a small amount of grinding, so the rigidity is more general. The double-symmetric blade surface and the chip discharge groove are strong in design, and because of its external geometric design, it can overcome the conventional single-blade surface and chip discharge groove design, which is prone to chip failure, excessive tool wear and needle breakage after use, and is currently used in the industry. The single-edge burr structure of the present invention can be directly used for the inspection, drilling and flank grinding equipment, and has the advantages of practicality.
以上所述之實施例僅係為說明本發明之技術思想及特點，其目的在使熟習此項技藝之人士能夠瞭解本發明之內容並據以實施，當不能以之限定本發明之專利範圍，即大凡依本發明所揭示之精神所作之均等變化或修飾，仍應涵蓋在本發明之專利範圍內。The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. That is, the equivalent variations or modifications made by the spirit of the present invention should still be included in the scope of the present invention.
10．．．單刃鑽針結構10. . . Single-edged burr structure
12．．．鑽柄部12. . . Drill handle
14．．．鑽刃部14. . . Drill blade
141．．．外周面141. . . Peripheral surface
142．．．最大圓剖面142. . . Maximum circular section
O．．．迴轉軸線O. . . Rotary axis
16．．．切屑排出溝16. . . Chip discharge ditch
161．．．壁面161. . . Wall
18．．．弦形刀面18. . . Chord face
181．．．切削邊181. . . Cutting edge
182．．．支撐邊182. . . Support side
A、B．．．端部A, B. . . Ends
θ．．．夾角θ. . . Angle
圖1所示為本發明一實施例單刃鑽針結構立體示意圖。1 is a perspective view showing the structure of a single-edged drill according to an embodiment of the present invention.
圖2所示為本發明一實施例單刃鑽針結構之前端面示意圖。2 is a schematic front end view showing the structure of a single-blade drill needle according to an embodiment of the present invention.
圖3所示為本發明單刃鑽針結構與習知具雙對稱刀面之鑽針結構的精度表現比較圖。Fig. 3 is a view showing the comparison of the precision performance of the single-edged burr structure of the present invention and the conventional lancet structure having a double symmetrical knives.
圖4所示為本發明單刃鑽針結構與習知具雙對稱刀面之鑽針結構之孔壁粗糙度表現比較圖。Fig. 4 is a view showing the comparison of the wall roughness performance of the single-edged burr structure of the present invention and the conventional burr-shaped burr structure.
10．．．單刃鑽針結構10. . . Single-edged burr structure
12．．．鑽柄部12. . . Drill handle
14．．．鑽刃部14. . . Drill blade
141．．．外周面141. . . Peripheral surface
O．．．迴轉軸線O. . . Rotary axis
16．．．切屑排出溝16. . . Chip discharge ditch
161．．．壁面161. . . Wall
18．．．弦形刀面18. . . Chord face
181．．．切削邊181. . . Cutting edge
182．．．支撐邊182. . . Support side
A、B．．．端部A, B. . . Ends
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100102604A TWI418430B (en) | 2011-01-25 | 2011-01-25 | Drill bit structure with single blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100102604A TWI418430B (en) | 2011-01-25 | 2011-01-25 | Drill bit structure with single blade |
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| Publication Number | Publication Date |
|---|---|
| TW201231196A TW201231196A (en) | 2012-08-01 |
| TWI418430B true TWI418430B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100102604A TWI418430B (en) | 2011-01-25 | 2011-01-25 | Drill bit structure with single blade |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5551812A (en) * | 1993-02-09 | 1996-09-03 | Basteck; Andreas | Single-blade reamer |
| US6030156A (en) * | 1998-04-17 | 2000-02-29 | Andronica; Randall | Drill and sharpening fixture |
| EP0843772B1 (en) * | 1995-08-10 | 2002-03-20 | Black & Decker Inc. | Cutting tool for drilling concrete, aggregate or masonry |
| TW506871B (en) * | 2000-11-14 | 2002-10-21 | Mitsubishi Materials Corportio | Small drill |
| TWM269983U (en) * | 2004-12-20 | 2005-07-11 | Chian Sheng Cemented Carbide C | Chamfering tool with single blade and spiral slot |
| TWM393380U (en) * | 2010-06-24 | 2010-12-01 | Topoint Technology Co Ltd | Improved drill needle |
| TWM396168U (en) * | 2010-08-27 | 2011-01-11 | Topgreen Technology Co Ltd | Single-port cutting tool |
| TWM396722U (en) * | 2010-04-30 | 2011-01-21 | Carbide Internat Co Ltd | Bit structure for single-blade |
-
2011
- 2011-01-25 TW TW100102604A patent/TWI418430B/en active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5551812A (en) * | 1993-02-09 | 1996-09-03 | Basteck; Andreas | Single-blade reamer |
| EP0843772B1 (en) * | 1995-08-10 | 2002-03-20 | Black & Decker Inc. | Cutting tool for drilling concrete, aggregate or masonry |
| US6030156A (en) * | 1998-04-17 | 2000-02-29 | Andronica; Randall | Drill and sharpening fixture |
| TW506871B (en) * | 2000-11-14 | 2002-10-21 | Mitsubishi Materials Corportio | Small drill |
| TWM269983U (en) * | 2004-12-20 | 2005-07-11 | Chian Sheng Cemented Carbide C | Chamfering tool with single blade and spiral slot |
| TWM396722U (en) * | 2010-04-30 | 2011-01-21 | Carbide Internat Co Ltd | Bit structure for single-blade |
| TWM393380U (en) * | 2010-06-24 | 2010-12-01 | Topoint Technology Co Ltd | Improved drill needle |
| TWM396168U (en) * | 2010-08-27 | 2011-01-11 | Topgreen Technology Co Ltd | Single-port cutting tool |
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| Publication number | Publication date |
|---|---|
| TW201231196A (en) | 2012-08-01 |
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