CN201168812Y - Twist drill - Google Patents
Twist drill Download PDFInfo
- Publication number
- CN201168812Y CN201168812Y CNU2008200034690U CN200820003469U CN201168812Y CN 201168812 Y CN201168812 Y CN 201168812Y CN U2008200034690 U CNU2008200034690 U CN U2008200034690U CN 200820003469 U CN200820003469 U CN 200820003469U CN 201168812 Y CN201168812 Y CN 201168812Y
- Authority
- CN
- China
- Prior art keywords
- knife
- cutter
- tool
- drill bit
- bit
- 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.)
- Expired - Fee Related
Links
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model relates to a drilling tool, a twist drill bit specifically says so. Including cylindrical handle of a knife, the cutter body that has spiral groove and be located the tool bit on cutter body top, its characterized in that: two ends of the knife handle are respectively provided with a knife body, and the top ends of the knife bodies are provided with knife heads. The tool shank may be a cylinder or a multi-faceted cylinder. The twist drill bit is provided with two tool bits and two cutter bodies, when one tool bit and one cutter body cannot be used due to abrasion or breakage, the tool bit and the cutter body on the other side can be used after the twist drill bit and the cutter body are turned, the service life of the whole drill bit can be doubled, and the use cost under the same condition is greatly reduced.
Description
Technical field
The utility model relates to a kind of boring bar tool, is a kind of spiral bit specifically.
Background technology
Common spiral bit all is provided with handle of a knife on cutter hub, be used for drill bit is fixed on the instrument, and cutter head is set below cutter hub, is used for holing.Such spiral bit has only a cutter head to use, and in the time of tool bit abrasion, just must change whole drill bit.Cause the wasting of resources thus, because drill bit is a rare metal alloy, and cutter head is the position of easy wearing and tearing in the whole drill bit.Usually only otherwise fracture, drill bit scraps all because tool bit abrasion excessively causes.This drill bit that has only a cutter head, its service life is limited.Use cost is higher relatively.
Summary of the invention
The purpose of this utility model provides a kind of long service life, spiral bit that use cost is low.
For achieving the above object, the utility model adopts following technical scheme:
Spiral bit described in the utility model comprises the handle of a knife of column, the cutter head that has the cutter hub of spiral grooves and be positioned at the cutter hub top, it is characterized in that: handle of a knife two ends respectively have a cutter hub, the top of cutter hub all has cutter head.
Above-mentioned handle of a knife can be cylinder or multi-faceted column.
This spiral bit has two cutter heads and two cutter hubs, when a cutter head and cutter hub because of wearing and tearing or fracture out of use the time, after can turning round, use the cutter head and the cutter hub of opposite side, can double the service life of whole drill bit, and the use cost under the square one reduces significantly.
Description of drawings
Accompanying drawing is the structural representation of an embodiment of the utility model.
The specific embodiment
As shown in drawings, a kind of spiral bit described in the utility model comprises the handle of a knife 3 of column, the cutter head 4 that has the cutter hub 1 of spiral grooves 2 and be positioned at cutter hub 1 top.Handle of a knife 3 two ends respectively have a cutter hub 1, the top of cutter hub 1 all has cutter head 4.
The shape of handle of a knife 3 can be cylinder or four sides, five, six multi-faceted column.
When using, handle of a knife 3 positions are clipped on the cutter use, when the cutter hub 1 of a side and cutter head 2 wearing and tearing are out of use, can den bohrkopf abbauen, after turning round, use the cutter hub 1 and the cutter head 4 of opposite side, can be doubled the service life of drill bit like this.
Claims (2)
1, a kind of spiral bit, comprise the handle of a knife (3) of column, the cutter head (4) that has the cutter hub (1) of spiral grooves (2) and be positioned at cutter hub (1) top, it is characterized in that: handle of a knife (3) two ends respectively have a cutter hub (1), the top of cutter hub (1) all has cutter head (4).
2, a kind of spiral bit according to claim 1 is characterized in that: handle of a knife (3) can be cylinder or multi-faceted column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200034690U CN201168812Y (en) | 2008-02-16 | 2008-02-16 | Twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200034690U CN201168812Y (en) | 2008-02-16 | 2008-02-16 | Twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201168812Y true CN201168812Y (en) | 2008-12-24 |
Family
ID=40207866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200034690U Expired - Fee Related CN201168812Y (en) | 2008-02-16 | 2008-02-16 | Twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201168812Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102470444A (en) * | 2009-08-26 | 2012-05-23 | 特固克有限会社 | Multi-functional cutting tool |
-
2008
- 2008-02-16 CN CNU2008200034690U patent/CN201168812Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102470444A (en) * | 2009-08-26 | 2012-05-23 | 特固克有限会社 | Multi-functional cutting tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20100216 |