CN201823976U - Twist drill - Google Patents
Twist drill Download PDFInfo
- Publication number
- CN201823976U CN201823976U CN2010205122163U CN201020512216U CN201823976U CN 201823976 U CN201823976 U CN 201823976U CN 2010205122163 U CN2010205122163 U CN 2010205122163U CN 201020512216 U CN201020512216 U CN 201020512216U CN 201823976 U CN201823976 U CN 201823976U
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- CN
- China
- Prior art keywords
- drill bit
- blades
- drill
- angle
- fore
- Prior art date
Links
- 101710004489 SMPX Proteins 0.000 claims description 4
- 102100000672 Small muscular protein Human genes 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 6
- 230000002349 favourable Effects 0.000 abstract 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 238000000034 methods Methods 0.000 description 1
Abstract
Description
Technical field
The utility model relates to a kind of drill bit, relates in particular to a kind of fluted drill.
Background technology
At present workpiece is carried out for there is higher precision in the hole that guarantees to process, needs subdrilling one aperture, and then carrying out reaming in the processing of hole.Present way is exactly to get out aperture with the path drill bit earlier, changes the drill bit reaming of big footpath then, and operation bothers very much like this, and inefficiency.Also have to be exactly that offset tool easily takes place in reaming after changing big footpath drill bit, to cause the reaming failure.Therefore, need a kind of new technical scheme to solve above-mentioned technical problem.
The utility model content
The purpose of this utility model provides a kind of brill, expands the compound fluted drill of one.
The technical solution adopted in the utility model is:
A kind of fluted drill, comprise drillstock and drill bit, described drill bit is a fried dough twist formula drill bit, described drill bit is a step structure, the fore-end diameter of described drill bit is less than rear end part, be equipped with two blades on described chisel edge part and the rear end part, angle equates between two blades between two blades on the described fore-end on angle and the rear end part.
Described angle is 120-140 °.
Drill bit of the present utility model adopts step structure, and the fore-end diameter of drill bit is less than rear end part, and on chisel edge part and rear end part, be equipped with two blades, fore-end gets out aperture earlier like this, rear end part carries out reaming to aperture simultaneously, need not tool changing, saves time, reduce trouble, improve drilling efficiency; Offset tool takes place during for fear of reaming, and angle between two blades on angle between two blades on the fore-end and the rear end part is designed to equate.
The utility model has the advantages that: simple in structure, easy to use, drilling efficiency is high, drilling quality is good.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
Wherein: 1, drillstock, 2, drill bit, 3, fore-end, 4, rear end part, 5, blade.
The specific embodiment
As shown in Figure 1, a kind of fluted drill comprises drillstock 1 and fried dough twist formula drill bit 2, and drill bit 2 is a step structure, and fore-end 3 diameters of drill bit 2 are less than rear end part 4, and on chisel edge part 3 and rear end part 4, be equipped with two blades 5, and fore-end 3 gets out aperture earlier like this, and 4 pairs of apertures of rear end part carry out reaming simultaneously, need not tool changing, save time, reduce trouble, improve drilling efficiency; Offset tool takes place during for fear of reaming, and 5 angles of two blades on the fore-end 3 are designed to equate with 5 angles of two blades on the rear end part 4, and are and are 120-140 °.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205122163U CN201823976U (en) | 2010-08-30 | 2010-08-30 | Twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205122163U CN201823976U (en) | 2010-08-30 | 2010-08-30 | Twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201823976U true CN201823976U (en) | 2011-05-11 |
Family
ID=43962534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205122163U CN201823976U (en) | 2010-08-30 | 2010-08-30 | Twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201823976U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825304A (en) * | 2011-06-17 | 2012-12-19 | 马克托罗工业株式会社 | Drill bit |
| CN104416202A (en) * | 2013-09-02 | 2015-03-18 | 天工爱和特钢有限公司 | Multi-sectional drill bit |
| CN105458354A (en) * | 2014-09-12 | 2016-04-06 | 贵州西南工具(集团)有限公司 | Novel composite material drilling bit and manufacturing method thereof |
-
2010
- 2010-08-30 CN CN2010205122163U patent/CN201823976U/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825304A (en) * | 2011-06-17 | 2012-12-19 | 马克托罗工业株式会社 | Drill bit |
| CN104416202A (en) * | 2013-09-02 | 2015-03-18 | 天工爱和特钢有限公司 | Multi-sectional drill bit |
| CN105458354A (en) * | 2014-09-12 | 2016-04-06 | 贵州西南工具(集团)有限公司 | Novel composite material drilling bit and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20110830 |
|
| C17 | Cessation of patent right |