CN201684961U - Split type drill - Google Patents
Split type drill Download PDFInfo
- Publication number
- CN201684961U CN201684961U CN2010201364977U CN201020136497U CN201684961U CN 201684961 U CN201684961 U CN 201684961U CN 2010201364977 U CN2010201364977 U CN 2010201364977U CN 201020136497 U CN201020136497 U CN 201020136497U CN 201684961 U CN201684961 U CN 201684961U
- Authority
- CN
- China
- Prior art keywords
- shank
- working portion
- drill
- drill bit
- split type
- 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
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Abstract
This utility model discloses a split type drill. The split type drill comprises a work part and a handle part, wherein, the work part and the handle part adopt a split structure and are welded into a whole. Since the work part and the handle part adopt the split structure and are welded into a whole, the work part of the drill and the handle part of the drill can be made of different materials, thus for ensuring the hardness of the drill, the work part of the drill can be made of hard alloy while the handle part of the drill can be made of other metallic materials, thereby greatly reducing the manufacturing cost of the drill. In addition, the only requirement of the split type drill is to weld the work part and the handle part together, thereby achieving convenient manufacturing as well as simple structure.
Description
Technical field
The utility model relates to a kind of drill bit, belongs to the technical field of aperture knife tool.
Background technology
Drill bit is to go out through hole or blind hole in order to drilling on solid material, and can be to the cutter of existing hole reaming.The drill bit of prior art comprises working portion and shank, working portion and shank are overall structure, working portion has many spiral grooves, spiral groove can be used method processing such as milling, grinding, hot rolling or hot extrusion, the front end of drill bit working portion forms cutting tip behind sharpening, the shank form has two kinds of staight shank and taper shanks, add man-hour the former be clipped in the drill chuck, the latter is inserted in the taper hole of machine tool chief axis or tailstock.The drill bit working portion and the shank of this structure are overall structures, wear and tear easily during the drilling of drill bit working portion, for service life and the service behaviour that guarantees drill bit, usually drill bit is processed by carbide alloy, because working portion and shank are overall structures, shank also can only have been processed by carbide alloy, thereby has increased the manufacturing cost of drill bit.
The utility model content
Technical problem to be solved in the utility model provides a kind of split type drill bit with low cost, simple in structure and easy to process.
In order to solve the problems of the technologies described above, a kind of split type drill bit of the utility model comprises working portion, shank, and wherein, described working portion and described shank are split-type structural, and described working portion and described shank are integrally welded.
Above-mentioned a kind of split type drill bit, wherein, described working portion and described shank junction are fixed with an overcoat, the described outer periphery that is set on described working portion and shank junction.
The utility model can be realized following beneficial effect:
1, because described working portion and described shank are split-type structural, described working portion and described shank are integrally welded, the working portion of drill bit can adopt different materials processing to form with shank, in order to guarantee the hardness of drill bit working portion, the working portion of drill bit can process with carbide alloy, shank can be made with other metal material, thus the manufacturing cost of the drill bit that lowered the price by a wide margin greatly; In addition, the utility model only welds working portion and shank, therefore, processes more convenient, and simple in structure.
2, because described working portion and described shank weld are fixed with an overcoat, can protect, prevent that weld is corroded, thereby prolonged the service life of drill bit the junction of working portion and shank.
Description of drawings
Fig. 1 is a structural representation of the present utility model
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in the figure, in order to solve the problems of the technologies described above a kind of split type drill bit of the utility model, comprise working portion 1, shank 2, wherein, described working portion 1 is a split-type structural with described shank 2, and described working portion 1 is integral by being welded to connect with described shank 2.Because described working portion 1 is a split-type structural with described shank 2, described working portion 1 and described shank 2 are integrally welded, the working portion 1 of drill bit can adopt different materials processing to form with shank 2, the working portion 1 of drill bit can process with carbide alloy, shank 2 can be made with other metal material, process as stainless steel, thus the manufacturing cost of the drill bit that lowered the price by a wide margin greatly; In addition, the utility model only welds working portion and shank, therefore, processes more convenient, and simple in structure.
In order to prolong the service life of drill bit; also can be fixed with an overcoat 3 with described shank 2 junctions at described working portion 1; described overcoat 3 is arranged on the periphery of described working portion 1 and shank 2 junctions; overcoat is unrestricted with fixedlying connected of junction; for easy to process; can be with overcoat by linking into an integrated entity with shank periphery interference fit; because described working portion 1 is fixed with an overcoat with described shank 2 welds; can protect the working portion 1 and the junction of shank 2; prevent that weld is corroded, thereby prolonged the service life of drill bit.
Here description of the present utility model and application are illustrative; be not to want in the above-described embodiments with scope restriction of the present utility model; therefore, the utility model is not subjected to the restriction of present embodiment, and the technical scheme that any employing equivalence replacement obtains is all in the scope of the utility model protection.
Claims (2)
1. a split type drill bit comprises working portion (1), shank (2), it is characterized in that, described working portion (1) is a split-type structural with described shank (2), and described working portion (1) is integrally welded with described shank (2).
2. a kind of according to claim 1 split type drill bit is characterized in that, described working portion (1) is fixed with an overcoat (3) with described shank (2) junction, and described overcoat (3) is arranged on the periphery of described working portion (1) and shank (2) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201364977U CN201684961U (en) | 2010-03-19 | 2010-03-19 | Split type drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201364977U CN201684961U (en) | 2010-03-19 | 2010-03-19 | Split type drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201684961U true CN201684961U (en) | 2010-12-29 |
Family
ID=43373251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201364977U Expired - Fee Related CN201684961U (en) | 2010-03-19 | 2010-03-19 | Split type drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201684961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266969A (en) * | 2011-07-28 | 2011-12-07 | 锑玛(苏州)精密工具有限公司 | Drill head |
-
2010
- 2010-03-19 CN CN2010201364977U patent/CN201684961U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266969A (en) * | 2011-07-28 | 2011-12-07 | 锑玛(苏州)精密工具有限公司 | Drill head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20150319 |
|
| EXPY | Termination of patent right or utility model |