CN102717128A - Novel flat-bottom hole drill - Google Patents
Novel flat-bottom hole drill Download PDFInfo
- Publication number
- CN102717128A CN102717128A CN2012101855582A CN201210185558A CN102717128A CN 102717128 A CN102717128 A CN 102717128A CN 2012101855582 A CN2012101855582 A CN 2012101855582A CN 201210185558 A CN201210185558 A CN 201210185558A CN 102717128 A CN102717128 A CN 102717128A
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- drill
- flat
- hole drill
- bottom hole
- novel flat
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Abstract
The invention relates to a novel flat-bottom hole drill which comprises a twist drill, wherein a core bit is arranged at the lower end of the twist drill; two straight cutting edges are symmetrically arranged at the lower end of the twist drill and on the two sides of the core bit; a front angle of the flat-bottom hole drill is milled to be at 2-5 degrees; a rear angle of the flat-bottom hole drill is milled to be at 2-3 degrees; and a concave notch is arranged on each of the cutting edges. According to the novel flat-bottom hole drill, the twist drill is milled to be flat and straight and symmetrical cutting edges and the rear angle is only at 2-3 degrees, so that the cutter stab is prevented and a breaking accident of the drill bit is avoided; the core bit is used for centering, so that the drilling is stable; the cutting resistance is reduced by the concave notches; and the novel flat-bottom hole drill is simple in structure and convenient to manufacture and can finish the flat-bottom processing according to the requirements of a workpiece.
Description
Technical field
The present invention relates to a kind of drill bit, a kind of specifically novel flat hole drill.
Background technology
In the plurality of applications, the Kong Caineng that end of formation is a planar base surface in workpiece meets the requirements.At present, the cutting element of many types and drilling system are developed in the application of the flat hole drill of processing.The skiver that prior art is designed for the processing flat-bottom hole has a lot of shortcomings, on some points on the drill bit or line, often occur collapsing and decrease or crackle, and drilling is not steady.
Summary of the invention
In order to address the above problem, the invention provides a kind ofly with unbearable centering, make the flat stably hole drill of drilling.
In order to achieve the above object, the present invention realizes through following technical scheme:
The present invention is a kind of novel flat hole drill, comprises fluted drill, is unbearable in the lower end of fluted drill, is two the straight cutting edges that are provided with of symmetry in the lower end of fluted drill, unbearable both sides, and a concave indentation is set on each cutting edge.
Further improvement of the present invention is: the anterior angle of flat hole drill is worn into 2 °-5 °, and the relief angle of flat hole drill is worn into 2 °-3 °.
The invention has the beneficial effects as follows: the present invention wears into straight and symmetrical cutting edge with fluted drill, and relief angle is merely 2 °-3 °, prevents knife; Avoid the drill bit accident that fractures,, make drilling steady through unbearable centering; The concave indentation that on cutting edge, is provided with, the resistance when having reduced cutting.
The present invention is simple in structure, and is easy to make, accomplishes flat processing according to the needs of workpiece.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Structural representation when Fig. 2 is drilling of the present invention.
Wherein: the 1-fluted drill, 2-is unbearable, 3-cutting edge, 4-concave indentation.
The specific embodiment
In order to deepen to understanding of the present invention, will combine accompanying drawing and embodiment that the present invention is described in further detail below, this embodiment only is used to explain the present invention, protection scope of the present invention is not constituted to limit.
The present invention is a kind of novel flat hole drill; Comprise fluted drill 1; In the lower end of said fluted drill 1 is to infiltrate 2, is two the straight cutting edges 3 that are provided with of symmetry in the lower end of said fluted drill 1, said unbearable 2 both sides, and a concave indentation 4 is set on said each cutting edge 3; The anterior angle of said flat hole drill is worn into 2 °-5 °, and the relief angle of said flat hole drill is worn into 2 °-3 °.The present invention wears into straight and symmetrical cutting edge with fluted drill, and relief angle is merely 2 °-3 °, prevents knife, avoids the drill bit accident that fractures, and through unbearable centering, makes drilling steady, and the concave indentation 4 that is provided with on the cutting edge 3 has reduced cutting resistance.
The present invention is simple in structure, and is easy to make, accomplishes flat processing according to the needs of workpiece.
Claims (2)
1. novel flat hole drill; Comprise fluted drill (1); Lower end at said fluted drill (1) is unbearable (2); It is characterized in that: in the lower end of said fluted drill (1), the both sides of said unbearable (2) be symmetry two straight cutting edges (3) are set, a concave indentation (4) is set on said each cutting edge (3).
2. according to the said a kind of novel flat hole drill of claim 1, it is characterized in that: the anterior angle of said flat hole drill is worn into 2 °-5 °, and the relief angle of said flat hole drill is worn into 2 °-3 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101855582A CN102717128A (en) | 2012-06-07 | 2012-06-07 | Novel flat-bottom hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101855582A CN102717128A (en) | 2012-06-07 | 2012-06-07 | Novel flat-bottom hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102717128A true CN102717128A (en) | 2012-10-10 |
Family
ID=46943071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101855582A Pending CN102717128A (en) | 2012-06-07 | 2012-06-07 | Novel flat-bottom hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102717128A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978241A (en) * | 2013-10-21 | 2014-08-13 | 惠夏鸣 | Fully automatic large-caliber drilling machine |
| CN106392522A (en) * | 2016-11-10 | 2017-02-15 | 苏茂均 | Preparation method of modular drill bit and modular drill bit |
| CN107052407A (en) * | 2017-02-15 | 2017-08-18 | 洛阳恒诺锚固技术有限公司 | A kind of end face cross hard alloy cutting drill head with symmetric windows |
| CN113927069A (en) * | 2021-11-09 | 2022-01-14 | 浙江汇丰汽车零部件股份有限公司 | Drill bit structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030118414A1 (en) * | 2000-03-02 | 2003-06-26 | Mathias Fuss | Rock drill |
| CN201684955U (en) * | 2009-12-28 | 2010-12-29 | 上海瑞尔实业有限公司 | Central water discharging bottoming drill |
| CN201720500U (en) * | 2010-07-21 | 2011-01-26 | 胡佳英 | Machining cutter for drilling small-diameter and flat-bottom blind hole |
| CN102000857A (en) * | 2010-12-10 | 2011-04-06 | 上海瑞尔实业有限公司 | Straight flute bottoming drill |
| CN202726137U (en) * | 2012-06-07 | 2013-02-13 | 江苏天工工具有限公司 | Novel flat-bottom hole drill |
-
2012
- 2012-06-07 CN CN2012101855582A patent/CN102717128A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030118414A1 (en) * | 2000-03-02 | 2003-06-26 | Mathias Fuss | Rock drill |
| CN201684955U (en) * | 2009-12-28 | 2010-12-29 | 上海瑞尔实业有限公司 | Central water discharging bottoming drill |
| CN201720500U (en) * | 2010-07-21 | 2011-01-26 | 胡佳英 | Machining cutter for drilling small-diameter and flat-bottom blind hole |
| CN102000857A (en) * | 2010-12-10 | 2011-04-06 | 上海瑞尔实业有限公司 | Straight flute bottoming drill |
| CN202726137U (en) * | 2012-06-07 | 2013-02-13 | 江苏天工工具有限公司 | Novel flat-bottom hole drill |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978241A (en) * | 2013-10-21 | 2014-08-13 | 惠夏鸣 | Fully automatic large-caliber drilling machine |
| CN106392522A (en) * | 2016-11-10 | 2017-02-15 | 苏茂均 | Preparation method of modular drill bit and modular drill bit |
| CN106392522B (en) * | 2016-11-10 | 2018-05-11 | 北京阿尔玛斯科技有限公司 | A kind of Modular drill preparation method and Modular drill |
| CN107052407A (en) * | 2017-02-15 | 2017-08-18 | 洛阳恒诺锚固技术有限公司 | A kind of end face cross hard alloy cutting drill head with symmetric windows |
| CN113927069A (en) * | 2021-11-09 | 2022-01-14 | 浙江汇丰汽车零部件股份有限公司 | Drill bit structure |
| CN113927069B (en) * | 2021-11-09 | 2022-12-27 | 浙江汇丰汽车零部件股份有限公司 | Drill bit structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |