CN203347690U - Square-head drill forged piece - Google Patents
Square-head drill forged piece Download PDFInfo
- Publication number
- CN203347690U CN203347690U CN 201320376396 CN201320376396U CN203347690U CN 203347690 U CN203347690 U CN 203347690U CN 201320376396 CN201320376396 CN 201320376396 CN 201320376396 U CN201320376396 U CN 201320376396U CN 203347690 U CN203347690 U CN 203347690U
- Authority
- CN
- China
- Prior art keywords
- disc
- square
- radius
- cylindrical tube
- drill 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
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Abstract
The utility model discloses a square-head drill forged piece. The square-head drill forged piece comprises a cylindrical pipe body, a first disc body, a square column body and a second disc body, wherein the cylindrical pipe body, the first disc body, the square column body and the second disc body are coaxially, integrally and sequentially arranged from bottom to top. The radius of the first disc body is larger than the diagonal length of the bottom surface of the square column body, the diagonal length of the bottom surface of the square column body is larger than the outer diameter of the cylindrical pipe body, and the outer diameter of the cylindrical pipe body is larger than the radius of the second disc body. A first round chamfer is arranged on the combination portion of the cylindrical pipe body and the first disc body, a second round chamfer is arranged on the combination portion of the square column body and the first disc body, and a third round chamfer is arranged on the combination portion of the second disc body and the square column body. The square-head drill forged piece has the advantages that the body structure is suitable for machining conveniently.
Description
Technical field
The utility model relates to square toes drill bit forging.
Background technology
Oil bit is the important tool of oil drilling, the quality of its service behaviour will directly affect drilling quality, drilling efficiency and drilling cost, the square toes drill bit is a kind of in oil bit, therefore the moulding of square toes drill bit forging directly affects the end product quality of square toes drill bit, therefore the more rational square toes drill bit of type body forging need to be arranged.
The utility model content
The purpose of this utility model is to provide a kind of square toes drill bit forging, and its type body structure is more suitable for convenient processing.
For achieving the above object, the technical solution of the utility model is a kind of square toes drill bit forging of design, comprises coaxial one the cylindrical tube, the first disc, cubic cylinder and the second disc that set gradually from down to up; The radius of the first disc is greater than the bottom surface catercorner length of cubic cylinder, and the bottom surface catercorner length of cubic cylinder is greater than the external diameter of cylindrical tube, and the external diameter of cylindrical tube is greater than the radius of the second disc; The joint portion of cylindrical tube and the first disc is provided with the first rounded corner; The joint portion of four directions cylinder and the first disc is provided with the second rounded corner; The joint portion of the second disc and cubic cylinder is provided with the 3rd chamfering.
Preferably, the radius of described the second disc is greater than the internal diameter of cylindrical tube.
Preferably, described the first rounded corner radius is less than the second rounded corner radius.
Preferably, the thickness of described the first disc is greater than the thickness of the second disc.
Advantage of the present utility model and beneficial effect are: a kind of square toes drill bit forging is provided, and its type body structure is more suitable for convenient processing.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the top view of Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is further described.Following examples are only for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
The concrete technical scheme of implementing of the utility model is:
A kind of square toes drill bit forging, comprise coaxial one the cylindrical tube 1, the first disc 2, cubic cylinder 3 and the second disc 4 that set gradually from down to up; The radius of the first disc 2 is greater than the bottom surface catercorner length of cubic cylinder 3, and the bottom surface catercorner length of cubic cylinder 3 is greater than the external diameter of cylindrical tube 1, and the external diameter of cylindrical tube 1 is greater than the radius of the second disc 4; The joint portion of cylindrical tube 1 and the first disc 2 is provided with the first rounded corner 5; The joint portion of four directions cylinder 3 and the first disc 2 is provided with the second rounded corner 6; The second disc 4 is provided with the 3rd chamfering 7 with the joint portion of cubic cylinder 3.
The radius of described the second disc 4 is greater than the internal diameter of cylindrical tube 1.
Described the first rounded corner 5 radiuses are less than the second rounded corner 6 radiuses.
The thickness of described the first disc 2 is greater than the thickness of the second disc 4.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. square toes drill bit forging, is characterized in that, comprises coaxial one the cylindrical tube, the first disc, cubic cylinder and the second disc that set gradually from down to up; The radius of the first disc is greater than the bottom surface catercorner length of cubic cylinder, and the bottom surface catercorner length of cubic cylinder is greater than the external diameter of cylindrical tube, and the external diameter of cylindrical tube is greater than the radius of the second disc; The joint portion of cylindrical tube and the first disc is provided with the first rounded corner; The joint portion of four directions cylinder and the first disc is provided with the second rounded corner; The joint portion of the second disc and cubic cylinder is provided with the 3rd chamfering.
2. square toes drill bit forging according to claim 1, is characterized in that, the radius of described the second disc is greater than the internal diameter of cylindrical tube.
3. square toes drill bit forging according to claim 1, is characterized in that, described the first rounded corner radius is less than the second rounded corner radius.
4. square toes drill bit forging according to claim 1, is characterized in that, the thickness of described the first disc is greater than the thickness of the second disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320376396 CN203347690U (en) | 2013-06-28 | 2013-06-28 | Square-head drill forged piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320376396 CN203347690U (en) | 2013-06-28 | 2013-06-28 | Square-head drill forged piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203347690U true CN203347690U (en) | 2013-12-18 |
Family
ID=49747600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320376396 Expired - Fee Related CN203347690U (en) | 2013-06-28 | 2013-06-28 | Square-head drill forged piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203347690U (en) |
-
2013
- 2013-06-28 CN CN 201320376396 patent/CN203347690U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20210628 |