CN201862826U - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- CN201862826U CN201862826U CN2010206215131U CN201020621513U CN201862826U CN 201862826 U CN201862826 U CN 201862826U CN 2010206215131 U CN2010206215131 U CN 2010206215131U CN 201020621513 U CN201020621513 U CN 201020621513U CN 201862826 U CN201862826 U CN 201862826U
- Authority
- CN
- China
- Prior art keywords
- hole
- liquid
- drill bit
- spray hole
- termination
- 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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- Earth Drilling (AREA)
Abstract
The utility model discloses a drill bit comprising an end, a drill pipe and a drill tail which are integrated, wherein, the drill tail is provided with a threaded assembly hole; a liquid guiding hole which is concentric with the threaded assembly hole is arranged in the drill pipe; a liquid spray hole is arranged in the end; the upper end water inlet of the liquid guiding hole is communicated with the threaded assembly hole, and the lower end water outlet of the liquid guiding hole is communicated with the liquid spray hole; the liquid spray hole is in parallel with the axis of the end; and the liquid spray hole is arranged eccentrically relative to the end. The drill bit realizes cooling liquid diversion through the liquid guiding hole and the liquid spray hole which are dislocated and split, so that the problem of difficult processing of the drill bit when a straight liquid guiding hole is adopted is solved, the liquid guiding hole in the drill pipe and the liquid spray hole in the end are arranged separately, the liquid guiding hole in the drill pipe is designed into large diameter, and the conveyed volume of liquid is improved.
Description
Technical field
The utility model relates to a kind of drill bit.
Background technology
Be drilling efficiency that improves drill bit and the life-span of improving drill bit, need be to the termination of drill bit spray cooling water in bit bore, existing drill bit water spraying structure all is arranged on bit exterior, and it is applicable to big drill bit.But the drill bit thin for shaft glue, that drill bit is less, it is through being usually used in boring on thin slabstone, reaming etc., and the mode of this outer feedwater causes drill bit to scrap easily.Outer feedwater simultaneously need be set up water supply structure separately, the inconvenience that this uses for small-sized drillings such as handing brill.
The utility model content
At the problem that existing situation exists, the purpose of this utility model be to provide a kind of structure through improvement, drill bit easy to process.
For achieving the above object, a kind of drill bit of the utility model, comprise integrated termination, drilling rod and brill tail, wherein, bore tail and be provided with the screw thread pilot hole, be provided with delivery hole in the drilling rod with its concentric setting, be provided with spray hole in the termination, the upper end water inlet of delivery hole communicates with the screw thread pilot hole, and the lower end delivery port of delivery hole communicates with spray hole, spray hole is parallel to the axis setting of termination, and spray hole is with respect to the eccentric setting in termination.
A kind of drill bit of the utility model comes the water conservancy diversion cooling fluid by the delivery hole and the spray hole of dislocation split setting, eliminated when adopting straight delivery hole, the problem of drill bit processing difficulties, and delivery hole in the drilling rod and the spray hole branch in the termination are arranged, delivery hole in can drilling rod is set to major diameter, to improve amount of infusion.
Description of drawings
Fig. 1 is the utility model cutaway view.
Wherein Reference numeral is as follows:
The specific embodiment
As shown in Figure 1, a kind of drill bit of the utility model comprises integrated termination 1, drilling rod 2 and bores tail 3, bores in the tail 3 and is provided with the screw thread pilot hole 4 that is complementary with rig, the concentric setting of axis of screw thread pilot hole 4 and termination 1 and drilling rod 2.
Be provided with in the drilling rod 2 along its axis and the delivery hole 5 concentric with it, delivery hole 5 runs through whole drilling rod 2, is provided with spray hole 8 in the termination 1, and spray hole 8 is parallel to the axis setting of termination 1, and spray hole 8 is with respect to the eccentric axis setting of termination 1.The upper end water inlet 6 of delivery hole 5 communicates with screw thread pilot hole 4, lower end delivery port 7 communicates with the upper port of spray hole 8.
The outer surface of termination 1 is provided with the hard material layer that is made of diamond particles, also is provided with netted rhone on its lower surface, and the lower port of spray hole 8 communicates with this rhone.
During use, to delivery hole 5, import cooling fluid from screw thread pilot hole 4, drill bit in the running, the centrifugal force that produce in the delivery hole 5 will throw away cooling fluid rapidly by spray hole 8, guarantee that the termination obtains continuing cooling, have good cooling results, improved the advantage of drilling life of bit.
In the utility model, delivery hole 5 and spray hole 8 all adopt the straight hole structure along the drill axis direction, are satisfying under the condition of operating mode, have processing simple, advantage, the delivery hole 5 in the drilling rod can be set to major diameter, to improve amount of infusion, improves cooling effect.
Claims (1)
1. drill bit, it is characterized in that, this drill bit comprises integrated termination, drilling rod and brill tail, wherein, bores tail and is provided with the screw thread pilot hole, be provided with delivery hole in the drilling rod with its concentric setting, be provided with spray hole in the termination, the upper end water inlet of delivery hole communicates with the screw thread pilot hole, and the lower end delivery port of delivery hole communicates with spray hole, spray hole is parallel to the axis setting of termination, and spray hole is with respect to the eccentric setting in termination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206215131U CN201862826U (en) | 2010-11-15 | 2010-11-15 | Drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206215131U CN201862826U (en) | 2010-11-15 | 2010-11-15 | Drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201862826U true CN201862826U (en) | 2011-06-15 |
Family
ID=44133993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206215131U Expired - Fee Related CN201862826U (en) | 2010-11-15 | 2010-11-15 | Drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201862826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400916A (en) * | 2014-11-25 | 2015-03-11 | 江苏锋菱超硬工具有限公司 | Low-speed, dry-punching and braze-welding star drill |
-
2010
- 2010-11-15 CN CN2010206215131U patent/CN201862826U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400916A (en) * | 2014-11-25 | 2015-03-11 | 江苏锋菱超硬工具有限公司 | Low-speed, dry-punching and braze-welding star drill |
| CN104400916B (en) * | 2014-11-25 | 2016-03-09 | 江苏锋菱超硬工具有限公司 | A kind of low rapid-curing cutback welding small hole of drilling a blasting hole bores |
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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: 20110615 Termination date: 20111115 |