CN203044997U - Steel sleeve type drill bit - Google Patents
Steel sleeve type drill bit Download PDFInfo
- Publication number
- CN203044997U CN203044997U CN 201220735851 CN201220735851U CN203044997U CN 203044997 U CN203044997 U CN 203044997U CN 201220735851 CN201220735851 CN 201220735851 CN 201220735851 U CN201220735851 U CN 201220735851U CN 203044997 U CN203044997 U CN 203044997U
- Authority
- CN
- China
- Prior art keywords
- cutter hub
- drill bit
- blade
- handle
- cutter body
- 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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- Drilling Tools (AREA)
Abstract
The utility model relates to the field of pipeline mounting and pipeline maintaining, in particular to a steel sleeve type drill bit. The steel sleeve type drill bit comprises a cutter body, a cutter handle is arranged at one end of the cutter body, the cutter body is of a cylinder shape, a cylindrical cavity is arranged inside the cutter body, and a blade is arranged at the other end of the cutter body. The blade is of a sawtooth shape. The cutter handle is a hollow orthohexagonal cutter handle. Threads are arranged on the inner surface of the cutter handle. One edge, close to the inner side of the cutter body, of the blade forms an included angle of 10 degrees with one edge, close to the outer side of the cutter body, of the blade. According to the steel sleeve type drill bit, the fact that drilling is conducted from the center of a drilled hole to the periphery of the drilled hole is of no need, and labor intensity and loss of the drill bit are reduced.
Description
Technical field
The utility model relates to pipeline to be installed and the pipeline maintenance field, relates in particular to a kind of iron and steel shell bit.
Background technology
The transport pipeline of water, oil and gas etc. is because damages such as burn into is run-down may appear in the cause of daily long use or burst accident, perhaps at transport pipeline arm etc. is installed, all need be got out the opening of certain diameter at original transport pipeline.At present, drill bit commonly used is generally common screw thread drill bit, this drill bit drill through pipeline the time be will will will drill through opening pull out of hole from its center, drill through the opening to necessary requirement then always, this drill bit owing to need drill through whole opening, is very serious to wearing and tearing and the consumption of drill bit in the drilling operation of steel pipeline.
The utility model content
Technical problem to be solved in the utility model provides in the process that pipeline bores mouthful from a kind of iron and steel shell bit of the edge trip-out of the opening that will drill through.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of iron and steel shell bit, comprise cutter hub, an end of described cutter hub is equipped with handle of a knife, and described cutter hub is cylindrical cutter body, the inside of described cutter hub is cylindrical cavity, and the other end of described cutter hub is blade.
The beneficial effects of the utility model are: need not get into the periphery in the hole that will drill through from the center in the hole that will drill through always, reduce labour intensity and to the loss of drill bit.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described blade is serrated edge.
Further, described handle of a knife is the regular hexagon handle of a knife of hollow.
Further, the inner surface of described handle of a knife is provided with screw thread.
Further, one side described blade near one side of described cutter hub inboard with becomes ten to spend angles near the described cutter hub outside.
Adopt the beneficial effect of above-mentioned further scheme to be: one side with the be designed to ten degree angles of blade near one side with the close described cutter hub outside of described cutter hub inboard, make last what drill through, pipeline near the cutter hub inboard drills earlier, if do not have angle, be flat, can being difficult to last drilling at last of drilling through.
Description of drawings
Fig. 1 is right view of the present utility model;
Fig. 2 is that the utility model is along the schematic cross-section of A-A among Fig. 1;
Fig. 3 is the partial schematic diagram of the utility model blade.
In the accompanying drawing, the parts of each label representative are as follows:
1, handle of a knife, 2, cutter hub, 3, blade.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not for limiting scope of the present utility model.
As shown in Figure 1, Fig. 1 comprises the right view of 4 serrated edge for the utility model.
Fig. 2 is that the utility model is along the schematic cross-section of A-A among Fig. 1, a kind of iron and steel shell bit, comprise cutter hub 2, one end of described cutter hub 2 is equipped with handle of a knife 1, described cutter hub 2 is cylindrical cutter body, the inside of described cutter hub 2 is cylindrical cavity, the other end of described cutter hub 2 is blade 3, this design makes the utility model when drilling through pipeline, begins to pull out of hole from the periphery in the hole that will drill through, drill through end after, the periphery of the sky that drills through is cut, the inboard has a cake waste material, has avoided the drill bit of traditional structure will get into the periphery in the hole that will drill through from the center in the hole that drills through always, has reduced labour intensity and to the loss of drill bit.
Described blade 3 is serrated edge, and as shown in Figure 3, described blade 3 has certain thickness, one side described blade 3 is near the ten degree angles that become in one side with close described cutter hub 2 outsides of described cutter hub 2 inboards; Described handle of a knife is the regular hexagon handle of a knife of hollow, and the similar hexagonal (hexagon)nut of its shape is conveniently installed with instrument; The inner surface of described handle of a knife is provided with screw thread.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. an iron and steel shell bit comprises cutter hub, and an end of described cutter hub is equipped with handle of a knife, it is characterized in that, described cutter hub is cylindrical cutter body, and the inside of described cutter hub is cylindrical cavity, and the other end of described cutter hub is blade.
2. a kind of iron and steel shell bit according to claim 1 is characterized in that, described blade is serrated edge.
3. a kind of iron and steel shell bit according to claim 1 is characterized in that, described handle of a knife is the regular hexagon handle of a knife of hollow.
4. according to the arbitrary described a kind of iron and steel shell bit of claim 1 to 3, it is characterized in that the inner surface of described handle of a knife is provided with screw thread.
5. according to the arbitrary described a kind of iron and steel shell bit of claim 1 to 3, it is characterized in that, one side described blade is near the ten degree angles that become in one side with the close described cutter hub outside of described cutter hub inboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220735851 CN203044997U (en) | 2012-12-28 | 2012-12-28 | Steel sleeve type drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220735851 CN203044997U (en) | 2012-12-28 | 2012-12-28 | Steel sleeve type drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203044997U true CN203044997U (en) | 2013-07-10 |
Family
ID=48727994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220735851 Expired - Fee Related CN203044997U (en) | 2012-12-28 | 2012-12-28 | Steel sleeve type drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203044997U (en) |
-
2012
- 2012-12-28 CN CN 201220735851 patent/CN203044997U/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: 20130710 Termination date: 20181228 |