CN102642041B - Method and double-horn drill bit for reducing cutting resistance of drill bit - Google Patents
Method and double-horn drill bit for reducing cutting resistance of drill bit Download PDFInfo
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- CN102642041B CN102642041B CN201110391429.4A CN201110391429A CN102642041B CN 102642041 B CN102642041 B CN 102642041B CN 201110391429 A CN201110391429 A CN 201110391429A CN 102642041 B CN102642041 B CN 102642041B
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Abstract
The invention discloses a method and a double-horn drill bit for reducing the cutting resistance of a drill bit; two horns are manufactured on the front end part of the drill bit, wherein one horn is a main horn and the other horn is an auxiliary horn, so that the tip of the main horn is in the center of the foremost end of the drill bit; the auxiliary horn is joined with the main horn, so that the angle of the main horn is bigger than that of the auxiliary horn; and the cutting resistance of the drill bit is effectively scattered and simultaneously the axial brand resistance in the cutting resistance is reduced through the method of increasing the length of the actual cutting edge of the drill bit by arranging the two horns. The method and the double-horn drill bit for reducing the cutting resistance of the drill bit not only has the advantages of high working efficiency and long service life, but also has the advantages of easiness in manufacturing, low use cost, good processing quality and the like.
Description
Technical field
the present invention relates to a kind of method and two drill point angle drill bit that reduces bit cutting resistance, belong to drill bit cutter manufacture technology field.
Background technology
at present, in drilling process, the position that drill bit tool wear is the most serious is Zhou Ren and drill point angle intersection, and all cutting stress all concentrate on this.Traditional drill bit is single drill point angle, the drill bit of this single drill point angle is in the time of real work, because the Length Ratio of its cutting edge is shorter, thereby suffered cutting resistance is larger, this not only makes the Zhou Ren of drill bit cutter and drill point angle intersection wear and tear very fast, and due to the reasons in structure of its drill point angle, making its cutting resistance major part is all axial point resistance, thereby greatly reduce the operating efficiency of drill bit.So result of use of existing drill bit or not ideal enough.
Summary of the invention
the object of the invention is, provide a kind of method and two drill point angle drill bit that cuts the reduction bit cutting resistance that feeding resistance is less, service life is long, stock-removing efficiency is higher, to overcome the deficiencies in the prior art.
the present invention is achieved in that a kind of method that reduces bit cutting resistance of the present invention is, leading section at drill bit is made two drill point angles, one of them is main drill point angle, another is secondary drill point angle, make the tip of main drill point angle in drill bit center foremost, secondary drill point angle is connected with main drill point angle, makes the angle of main drill point angle be greater than the angle of secondary drill point angle; Increase the length of drill bit actual cutting edge by the method for two drill point angles of this set, thereby the cutting resistance of effectively disperseing drill bit makes the axially point resistance in cutting resistance reduce simultaneously.
the two drill point angle drill bits of one of the present invention that build according to said method are: this drill bit comprises and is provided with cutting edge and spiral fluted drill bit, be provided with two drill point angles at the front end of drill bit, one of them is main drill point angle, another is secondary drill point angle, the tip of main drill point angle is arranged on drill bit center foremost, secondary drill point angle is connected with main drill point angle, be formed with corner annulus at the joining place of secondary drill point angle and main drill point angle, and the angle of main drill point angle is greater than the angle of secondary drill point angle.
the angle angle number of above-mentioned main drill point angle is 120 °～150 °, and the angle angle number of secondary drill point angle is 80 °～100 °.
the diameter of above-mentioned corner annulus is less than the diameter of drill bit.
the optimum value that the diameter of above-mentioned corner annulus is less than the diameter of drill bit is 0.5mm～3mm.
owing to having adopted technique scheme, the present invention is on the basis of conventional drill, by a drill point angle of its conventional drill, change system into two drill point angles, by being set, the method for two drill point angles increases the length of drill bit actual cutting edge, thereby effectively disperse the cutting resistance of drill bit, greatly improve the condition of work of Zhou Ren and secondary drill point angle intersection, make the life-span of its whole cutting blade obtain prolongation, and because the angle number of adopted secondary drill point angle is less than the angle number of main drill point angle, effectively improve the distribution of cutting resistance, and greatly reduce cutting resistance point resistance in the axial direction, therefore can make drill bit more laborsaving in the time carrying out cutwork, its axial feed power reduces greatly, the operating efficiency of its drill bit is greatly improved.So compared with prior art, the present invention not only has advantages of that operating efficiency is high, long service life in the present invention, make the advantages such as easy, use cost is low, crudy is good but also have.
Brief description of the drawings
fig. 1 is structural representation of the present invention;
fig. 2 is the left TV structure schematic diagram of Fig. 1;
fig. 3 is the local enlarged diagram of the A-A sectional structure of Fig. 2.
description of reference numerals: 1-drill bit, the main drill point angle of 2-, the secondary drill point angle of 3-, 4-corner annulus, the angle of α-main drill point angle, the angle of β-secondary drill point angle, Φ 1-bit diameter, Φ 2-corner circle diameter.
Detailed description of the invention
below in conjunction with drawings and Examples, the present invention is described in further detail.
embodiments of the invention: a kind of method that reduces bit cutting resistance of the present invention be on the basis of existing drill bit 1, carry out improved, the method is to produce two drill point angles at the leading section of existing drill bit 1, one of them drill point angle is made as main drill point angle 2, another drill point angle is made as secondary drill point angle 3, make the tip of main drill point angle 2 in drill bit 1 center foremost, and secondary drill point angle 3 is connected with main drill point angle 2, make the angle α of main drill point angle 2 be greater than the angle β of secondary drill point angle 3 simultaneously; Increase the length of drill bit actual cutting edge by the method for two drill point angles of this set, thereby the cutting resistance of effectively disperseing drill bit makes the axially point resistance in cutting resistance reduce simultaneously.
the structural representation of a kind of pair of drill point angle drill bit of the present invention building according to the method described above as shown in FIG. 1 to 3, of the present invention pair of drill point angle drill bit comprises and is provided with cutting edge and spiral fluted drill bit 1, produce two drill point angles at the front end of drill bit 1, one of them is main drill point angle 2, another is secondary drill point angle 3, the tip of main drill point angle 2 is produced on to drill bit 1 center foremost in a traditional way, then secondary drill point angle 3 is connected with main drill point angle 2, and the angle α of main drill point angle 2 is made into the angle β that is greater than secondary drill point angle 3, when making, the angle number of the angle α of main drill point angle 2 can be controlled to the scope of 120 °～150 °, the angle number of the angle β of secondary drill point angle 3 is controlled to the scope of 80 °～100 °, form a corner annulus 4(as shown in Figures 2 and 3 at secondary drill point angle 3 and the joining place of main drill point angle 2 like this), the diameter of phi of corner annulus 42 is made into the diameter of phi 1 that is less than drill bit 1, under normal conditions, can be according to the size of drill bit 1 diameter, the diameter of phi of corner annulus 42 is controlled to the scope of the 0.5mm～3mm that is less than drill bit 1 diameter of phi 1, in the time that the diameter of drill bit 1 is larger, the difference in diameter of the diameter of its drill bit 1 and corner annulus 4 is just larger.
Claims (2)
1. a two drill point angle drill bit, comprise and be provided with cutting edge and spiral fluted drill bit (1), it is characterized in that: be provided with two drill point angles at the front end of drill bit (1), one of them is main drill point angle (2), another is secondary drill point angle (3), the tip of main drill point angle (2) is arranged on drill bit (1) center foremost, secondary drill point angle (3) is connected with main drill point angle (2), be formed with corner annulus (4) at secondary drill point angle (3) and the joining place of main drill point angle (2), the diameter (Φ 2) of corner annulus (4) is less than the diameter (Φ 1) of drill bit (1), and the angle (α) of main drill point angle (2) is greater than the angle (β) of secondary drill point angle (3), angle (α) angle number of main drill point angle (2) is 120 °～150 °, and angle (β) angle number of secondary drill point angle (3) is 80 °～100 °.
2. according to claim 1 pair of drill point angle drill bit, is characterized in that: the diameter (Φ 2) of corner annulus (4) is less than diameter (Φ 1) 0.5mm～3mm of drill bit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110391429.4A CN102642041B (en) | 2011-12-01 | 2011-12-01 | Method and double-horn drill bit for reducing cutting resistance of drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110391429.4A CN102642041B (en) | 2011-12-01 | 2011-12-01 | Method and double-horn drill bit for reducing cutting resistance of drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102642041A CN102642041A (en) | 2012-08-22 |
| CN102642041B true CN102642041B (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110391429.4A Active CN102642041B (en) | 2011-12-01 | 2011-12-01 | Method and double-horn drill bit for reducing cutting resistance of drill bit |
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| Country | Link |
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| CN (1) | CN102642041B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209849949U (en) | 2018-01-29 | 2019-12-27 | 米沃奇电动工具公司 | Drill bit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2715895Y (en) * | 2004-07-22 | 2005-08-10 | 天鹰精密工具(番禺)有限公司 | Drill bit with five blades |
| EP1925386A1 (en) * | 2005-09-14 | 2008-05-28 | Jiangsu Tiangong Tools Corp. Ltd. | Drill bit with high performance for chip removal |
| CN201500803U (en) * | 2009-09-11 | 2010-06-09 | 深圳市仁创艺电子有限公司 | Taper hole drill bit |
| CN201693220U (en) * | 2010-03-30 | 2011-01-05 | 浙江欣兴工具有限公司 | Annular drill cutter |
| CN202317168U (en) * | 2011-12-01 | 2012-07-11 | 贵州西南工具(集团)有限公司 | Double-drill point angle drill bit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3851804B2 (en) * | 2001-10-26 | 2006-11-29 | 住友電工ハードメタル株式会社 | Replaceable twist drill |
| US7108460B2 (en) * | 2002-11-13 | 2006-09-19 | Hsin-Tien Chang | Unitized drill bit |
-
2011
- 2011-12-01 CN CN201110391429.4A patent/CN102642041B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2715895Y (en) * | 2004-07-22 | 2005-08-10 | 天鹰精密工具(番禺)有限公司 | Drill bit with five blades |
| EP1925386A1 (en) * | 2005-09-14 | 2008-05-28 | Jiangsu Tiangong Tools Corp. Ltd. | Drill bit with high performance for chip removal |
| CN201500803U (en) * | 2009-09-11 | 2010-06-09 | 深圳市仁创艺电子有限公司 | Taper hole drill bit |
| CN201693220U (en) * | 2010-03-30 | 2011-01-05 | 浙江欣兴工具有限公司 | Annular drill cutter |
| CN202317168U (en) * | 2011-12-01 | 2012-07-11 | 贵州西南工具(集团)有限公司 | Double-drill point angle drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102642041A (en) | 2012-08-22 |
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