CN203961795U - Two cutting diameter rock drill bits - Google Patents
Two cutting diameter rock drill bits Download PDFInfo
- Publication number
- CN203961795U CN203961795U CN201420197702.9U CN201420197702U CN203961795U CN 203961795 U CN203961795 U CN 203961795U CN 201420197702 U CN201420197702 U CN 201420197702U CN 203961795 U CN203961795 U CN 203961795U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- rock
- hard metal
- metal tip
- drill
- 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
Abstract
A kind of two cutting diameter rock drill bit, belong to rock crushing tool, be mainly used in being applicable to creeping into of department's bolting with wire mesh rock pores such as mine, traffic, water power, a kind of two cutting diameter rock drill bit, the end of drill bit is arranged with two wings, hard metal tip is arranged on wing, and drill bit is provided with tubaeform delivery port, it is characterized in that cutting edge and the drill axis 11mm apart of one of them hard metal tip; The cutting edge of another hard metal tip and drill axis are at a distance of 15.5mm.The utility model can improve the crushing efficiency of drill edge to rock, improves the rate of penetration of carbide alloy rock drill bit.Preferably resolve the slow problem of ordinary rigid alloy rock drill bit rate of penetration, can be smooth pierce is soft in medium ground.The drilling efficiency that significantly improves soft and medium ground, greatly reduces labor strength.
Description
Technical field
The utility model belongs to rock crushing tool, is mainly used in being applicable to creeping into of department's bolting with wire mesh rock pores such as mine, traffic, water power, is specifically related to a kind of two cutting diameter rock drill bit.
Background technology
Existing alloy rock drill bit, in the middle of actual use procedure, cutting edge belongs to single diameter rotary cutting, and cutting face is single, and drill bit grinds for a long time in hole, and crushing effect is poor, and rate of penetration is slow, has lowered production efficiency.
Summary of the invention
The utility model aims to provide that a kind of broken rock is fast, and abrasion resistance is better, and rate of penetration is fast, two cutting diameter rock drill bits that application life is long.
Realizing this practical novel technical scheme is: a kind of two cutting diameter rock drill bits, the end of drill bit is arranged with two wings, hard metal tip is arranged on wing, and drill bit is provided with tubaeform delivery port, it is characterized in that cutting edge and the drill axis 11mm apart of one of them hard metal tip; The cutting edge of another hard metal tip and drill axis are at a distance of 15.5 mm.
The drill bit of two cutting diameters, make drill bit in drilling process, on cutting plane, produce two small one and large one cutting diameters, rock is carried out to double crushing, make the more thorough of rock pulverizing, and then improve the deslagging efficiency of drill bit, thereby the wearing and tearing of drill body are reduced, its feature increases stock-removing efficiency by two cutting diameters, strengthens the degree of grinding of rock drill bit, has improved rate of penetration.
When drill bit of the present utility model rotates, cutting edge can produce the cutting diameter of two different-diameters;
Can improve the crushing efficiency of drill edge to rock, improve the rate of penetration of carbide alloy rock drill bit.Preferably resolve the slow problem of ordinary rigid alloy rock drill bit rate of penetration, can be smooth pierce is soft in medium ground.The drilling efficiency that significantly improves soft and medium ground, greatly reduces labor strength.
Brief description of the drawings
Fig. 1 is drill bit front view in the utility model embodiment
Fig. 2 is the left view of Fig. 1
Fig. 3 is the top view of Fig. 1
In Fig. 1: 1, hard metal tip; 2, delivery port; 3, wing; 4, screw thread; 5, inner cutter hole; 6, outer cutting edge, 7, limbers.
Detailed description of the invention:
Shown in embodiment: Fig. 1, Fig. 2, Fig. 3, the drill bit that this example is implemented is connected with drilling rod by screw thread 4, drill bit is provided with hard metal tip 1, hard metal tip 1 is provided with minor diameter cutting face 5 and major diameter cutting face 6, the end of drill bit is arranged with two wings 3, a hard metal tip 1 is all set on each wing 3, and the cutting edge of one of them hard metal tip and drill axis are at a distance of 11mm; The cutting edge of another hard metal tip and drill axis are at a distance of 15.5 mm.
Claims (1)
1. two cutting diameter rock drill bits, the end of drill bit is arranged with two wings, and hard metal tip is arranged on wing, and drill bit is provided with tubaeform delivery port, it is characterized in that cutting edge and the drill axis 11mm apart of one of them hard metal tip; The cutting edge of another hard metal tip and drill axis are at a distance of 15.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197702.9U CN203961795U (en) | 2014-04-23 | 2014-04-23 | Two cutting diameter rock drill bits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197702.9U CN203961795U (en) | 2014-04-23 | 2014-04-23 | Two cutting diameter rock drill bits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203961795U true CN203961795U (en) | 2014-11-26 |
Family
ID=51922394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420197702.9U Expired - Fee Related CN203961795U (en) | 2014-04-23 | 2014-04-23 | Two cutting diameter rock drill bits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203961795U (en) |
-
2014
- 2014-04-23 CN CN201420197702.9U patent/CN203961795U/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: 20141126 Termination date: 20190423 |