CN104551108A - Alloy bit - Google Patents
Alloy bit Download PDFInfo
- Publication number
- CN104551108A CN104551108A CN201310492712.5A CN201310492712A CN104551108A CN 104551108 A CN104551108 A CN 104551108A CN 201310492712 A CN201310492712 A CN 201310492712A CN 104551108 A CN104551108 A CN 104551108A
- Authority
- CN
- China
- Prior art keywords
- chip
- bit
- chip area
- alloy bit
- groove
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses an alloy bit comprising a toolbar and a tip. The tip is provided with two chip grooves in spiral shapes; the chip grooves are 75 degrees in spiral angle; the bottom of each chip groove is provided with an elongated protrusion which extends from the front end of the chip groove to its rear end; the lower portion of each chip groove is provided with a positioning groove. The alloy bit is provided with the only two chip grooves having great width and large spiral angle, thus chip discharging speed is high and the bit is never severely abraded; therefore, the alloy bit is suitable for high-speed drilling, and work efficiency is improved. The middle of the toolbar is provided with the positioning groove; during mounting, a positioning screw of a chuck is clamped in the positioning groove, and thus the bit is reliably positioned and never drops from the chuck.
Description
Technical field
The present invention relates to field of machining, be specifically related to a kind of alloy bit.
Background technology
Alloy bit is the cutter that boring is commonly used, drill bit is when holing, scrap can scrap be produced, by chip area, scrap be discharged, if can not be discharged very smoothly, the hole inwall bored can be caused to occur cut, existing drill bit is typically provided with many chip areas, and chip area is narrow, so helical angle is usually smaller, chip removal is slow, and cut appears in easy causing hole inwall; The knife bar of existing drill bit is generally cylindrical in addition, after the chuck appearance wearing and tearing of clamping knife bar, easily occurs the situation that knife bar skids on chuck, brings very large inconvenience to user.
Summary of the invention
The object of this invention is to provide the chip removal fast of a kind of energy, convenient clamping, a kind of alloy bit of drill bit difficult drop-off during work.
The present invention is achieved through the following technical solutions: a kind of alloy bit, comprises knife bar and cutter head, described cutter head is provided with two spiral helicine chip areas, and the helical angle of chip area is 75 °; The bottom land of described chip area is provided with bar shaped projection, and this bar shaped projection extends to the rear end of this chip area from the front end of chip area; The bottom of described knife bar is provided with detent.
The bottom land of described detent is a plane.
Beneficial effect of the present invention is: alloy bit of the present invention is only provided with two chip areas, the wider width of chip area, and helix angle is larger, therefore chip removal speed is fast, can not cause comparatively galling, therefore to drill bit, be applicable to rapid drilling operation, increase work efficiency; Be provided with detent in the middle part of drilling rod of the present invention, during installation, in the dog screw card people detent of chuck, thus drill bit reliably located, drill bit can not be come off from chuck.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of alloy bit of the present invention.
1 is bar shaped projection, and 2 is chip area, and 3 is cutter head, and 4 is knife bar, and 5 is detent.
Detailed description of the invention
With reference to Fig. 1, a kind of alloy bit, comprises knife bar 4 and cutter head 3, described cutter head 3 is provided with two spiral helicine chip areas 2, and the helical angle of chip area 2 is 75 °; The bottom land of described chip area 2 is provided with bar shaped projection 1, and this bar shaped projection 1 extends to the rear end of this chip area 2 from the front end of chip area 2; The bottom of described knife bar 4 is provided with detent.
The bottom land of described detent is a plane.
Alloy bit of the present invention is only provided with two chip areas, the wider width of chip area, and helix angle is comparatively large, and therefore chip removal speed is fast, can not cause comparatively galling, therefore, be applicable to rapid drilling operation, increase work efficiency drill bit; Be provided with detent in the middle part of drilling rod of the present invention, during installation, in the dog screw card people detent of chuck, thus drill bit reliably located, drill bit can not be come off from chuck.
Claims (2)
1. an alloy bit, comprises knife bar and cutter head, it is characterized in that: described cutter head is provided with two spiral helicine chip areas, and the helical angle of chip area is 75 °; The bottom land of described chip area is provided with bar shaped projection, and this bar shaped projection extends to the rear end of this chip area from the front end of chip area; The bottom of described knife bar is provided with detent.
2. a kind of alloy bit according to claim 1, is characterized in that: the bottom land of described detent is a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310492712.5A CN104551108A (en) | 2013-10-18 | 2013-10-18 | Alloy bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310492712.5A CN104551108A (en) | 2013-10-18 | 2013-10-18 | Alloy bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104551108A true CN104551108A (en) | 2015-04-29 |
Family
ID=53068763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310492712.5A Pending CN104551108A (en) | 2013-10-18 | 2013-10-18 | Alloy bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104551108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580981A (en) * | 2018-05-07 | 2018-09-28 | 苏州爽爽信息科技有限公司 | A kind of anti-oxidant high-performance drill bit of grinding machine |
-
2013
- 2013-10-18 CN CN201310492712.5A patent/CN104551108A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580981A (en) * | 2018-05-07 | 2018-09-28 | 苏州爽爽信息科技有限公司 | A kind of anti-oxidant high-performance drill bit of grinding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |