CN104338975A - Drill - Google Patents
Drill Download PDFInfo
- Publication number
- CN104338975A CN104338975A CN201310325981.2A CN201310325981A CN104338975A CN 104338975 A CN104338975 A CN 104338975A CN 201310325981 A CN201310325981 A CN 201310325981A CN 104338975 A CN104338975 A CN 104338975A
- Authority
- CN
- China
- Prior art keywords
- drill
- neck
- drill bit
- apex point
- drillstock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/08—Aluminium nitride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/04—Angles, e.g. cutting angles
- B23B2251/043—Helix angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
Abstract
The invention relates to a drill which comprises a drill stock, a drill neck and a drill tip. The drill is characterized in that the drill stock and the drill tip are respectively integrally connected at two ends of the drill neck, two spiral chip removal grooves 30-degree in spiral angle are arranged in the drill neck, the drill bit is provided with two cutting blades, and the included angle of the drill bit is 135 degrees; a 45-degree chamfer is arranged at the end of the drill stock; the surface of the drill neck and the surface of the drill bit are provided with an aluminum nitride titanium coating. By the above structure, and only two chip removal grooves larger in width and moderate in spiral angle are arranged in the drill, so that smooth chip removal of the drill is guaranteed, and meanwhile, abrasion of the drill is reduced.
Description
Technical field
The present invention relates to a kind of cutter, particularly drill bit.
Background technology
Drill bit is the cutter that boring is commonly used, drill bit is when holing, mainly through cutter head top, workpiece is cut, by chip area, chip is discharged, if chip can not be discharged very smoothly, the hole inwall bored then can be caused to occur cut, workpiece is even caused to become waste product, during drill bit design, the helical angle of chip area directly affects the speed of its chip removal, the larger chip removal of helical angle is more smooth and easy, but, chip also can be larger to the wearing and tearing of drill bit, helical angle is less, chip removal can be slow, relatively little to bit wear, existing drill bit normally arranges three chip areas, chip area is narrow, so helical angle is usually smaller, chip removal is slow, there is cut in easy causing hole inwall.
Summary of the invention
The object of this invention is to provide the smooth and easy and less drill bit of wearing and tearing of a kind of chip removal.
The technical scheme realizing the object of the invention is as follows:
A kind of drill bit, comprises drillstock, drill neck and apex point, it is characterized in that: described drill neck two ends respectively one connect drillstock and apex point, described drill neck is provided with helical form chip area, the helical angle of described chip area is 30 °, and described apex point is provided with two cutting edges, and the angle of described apex point is 135 °.
The end of described drillstock is provided with the chamfering of 45 °.
The surface of described drill neck and apex point all arranges TiAlN coating.
After adopting said structure, drill bit of the present invention only arranges two chip areas, and width of chip space is wider and helix angle is moderate, is ensureing that drill bit chip removal reduces the wearing and tearing of drill bit smoothly simultaneously.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the schematic diagram of cutting edge of the present invention.
In figure: 1 is drillstock, 2 is drill neck, and 3 is apex point, and 4 is chip area, and 5 is cutting edge.
Detailed description of the invention
Drillstock 1, drill neck 2 and apex point 3 is comprised by the known drill bit of the present invention of Fig. 1 and Fig. 2, described drill neck 2 two ends respectively one connect drillstock 1 and apex point 3, described drill neck 2 is provided with helical form chip area 4, the helical angle of described chip area 4 is 30 °, described apex point 3 is provided with two cutting edges 5, and the angle of described apex point 3 is 135 °.The end of described drillstock 1 is provided with the chamfering of 45 °.The surface of described drill neck 2 and apex point 3 all arranges TiAlN coating.
Claims (3)
1. a drill bit, comprise drillstock (1), drill neck (2) and apex point (3), it is characterized in that: described drill neck (2) two ends integrally connect drillstock (1) and apex point (3) respectively, described drill neck (2) is provided with helical form chip area (4), the helical angle of described chip area (4) is 30 °, described apex point (3) is provided with two cutting edges (5), and the angle of described apex point (3) is 135 °.
2. drill bit according to claim 1, is characterized in that: the end of described drillstock (1) is provided with the chamfering of 45 °.
3. drill bit according to claim 1, is characterized in that: the surface of described drill neck (2) and apex point (3) all arranges TiAlN coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325981.2A CN104338975A (en) | 2013-07-30 | 2013-07-30 | Drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325981.2A CN104338975A (en) | 2013-07-30 | 2013-07-30 | Drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104338975A true CN104338975A (en) | 2015-02-11 |
Family
ID=52495903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310325981.2A Pending CN104338975A (en) | 2013-07-30 | 2013-07-30 | Drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104338975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312636A (en) * | 2015-04-27 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Drill bit with double chip removal channels for printed circuit board (PCB) |
-
2013
- 2013-07-30 CN CN201310325981.2A patent/CN104338975A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312636A (en) * | 2015-04-27 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Drill bit with double chip removal channels for printed circuit board (PCB) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |
|
| WD01 | Invention patent application deemed withdrawn after publication |