CN203330467U - Drill bit quick to replace - Google Patents
Drill bit quick to replace Download PDFInfo
- Publication number
- CN203330467U CN203330467U CN2013204438162U CN201320443816U CN203330467U CN 203330467 U CN203330467 U CN 203330467U CN 2013204438162 U CN2013204438162 U CN 2013204438162U CN 201320443816 U CN201320443816 U CN 201320443816U CN 203330467 U CN203330467 U CN 203330467U
- Authority
- CN
- China
- Prior art keywords
- annular groove
- drillstock
- drill bit
- millimeters
- 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
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Abstract
The utility model discloses a drill bit quick to replace. According to the drill bit, quick replacement can be realized, meanwhile, good axial limiting and good circumferential limiting are provided, and the drill bit is not prone to breakage at the position of an annular groove. The drill bit quick to replace comprises a drill handle (1), a drill stem (2) and a bit tool (3). The annular groove (4) is formed in the drill handle (1), and the range of the depth of the annular groove is 3.0 millimeters to 4.75 millimeters; a plurality of hemispherical blind holes (5) are formed in the positions, located on the left side of the annular groove (4), on the drill handle (1), and the hemispherical blind holes (5) are circumferentially and evenly distributed around the drill handle (1).
Description
Technical field
The utility model relates to the bit technique field, is specifically a kind of Quick replaceable drill bit.
Background technology
Current Quick replaceable drill bit comprises drillstock, drilling rod, cutter head, drillstock is provided with annular groove, although said structure can also provide good axial limiting when realizing quick change, circumferentially not spacing, and also existing Quick replaceable drill bit easily ruptures at the annular groove place.
The utility model content
The technical problems to be solved in the utility model is, provide a kind of good axial limiting and circumferentially spacing can also be provided when realizing quick change, and at the annular groove place Quick replaceable drill bit of easy fracture not.
The technical solution of the utility model is, the utility model Quick replaceable drill bit, and it comprises drillstock, drilling rod, cutter head, and drillstock is provided with annular groove, and the span of the degree of depth of this annular groove is closed interval [3.0 millimeters, 4.75 millimeters]; The left side that is positioned at annular groove on drillstock is provided with a plurality of hemispherical blind holes, and the plurality of hemispherical blind hole circumferentially is uniformly distributed around drillstock.
After adopting said structure, the utility model compared with prior art, has the following advantages: because the span of the degree of depth of this annular groove is closed interval [3.0 millimeters, 4.75 millimeters], the left side that is positioned at annular groove on drillstock is provided with a plurality of hemispherical blind holes, the plurality of hemispherical blind hole circumferentially is uniformly distributed around drillstock, like this, the hemispherical blind hole matches and can realize circumferentially spacing to drill bit with the elasticity salient point of circumferential distribution on drill chuck, the span of the degree of depth of annular groove is controlled to [3.0 millimeters of closed intervals, 4.75 millimeter] can guarantee the intensity of annular groove, make Quick replaceable drill bit at the annular groove place easy fracture not, so the utlity model has the axial limiting that can when realizing quick change, also provide good reaches circumferentially spacing, and at the annular groove place advantage of easy fracture not.
As improvement, the cross section of drillstock is regular hexagon; The hemispherical blind hole is six, and six sides of drillstock hemispherical blind hole that respectively distributes like this, not only realizes circumferentially spacingly, and more can guarantee the intensity of drillstock.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model Quick replaceable drill bit.
Shown in figure, 1, drillstock, 2, drilling rod, 3, cutter head, 4, annular groove, 5, the hemispherical blind hole.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model Quick replaceable drill bit, it comprises drillstock 1, drilling rod 2, cutter head 3, and drillstock 1 is provided with annular groove 4, and the span of the degree of depth of this annular groove 4 is closed interval [3.0 millimeters, 4.75 millimeters]; The left side that is positioned at annular groove 4 on drillstock 1 is provided with a plurality of hemispherical blind holes 5, and the plurality of hemispherical blind hole 5 circumferentially is uniformly distributed around drillstock 1.
The cross section of drillstock 1 is regular hexagon; Hemispherical blind hole 5 is six, six sides of drillstock 1 hemispherical blind hole 5 that respectively distributes.
In this example, the degree of depth of annular groove 4 is 3.0 millimeters, and annular groove 4 is deep-slotted chip breaker.
Claims (2)
1. a Quick replaceable drill bit, it comprises drillstock (1), drilling rod (2), cutter head (3), and drillstock (1) is provided with annular groove (4), it is characterized in that, and the span of the degree of depth of this annular groove (4) is closed interval [3.0 millimeters, 4.75 millimeters]; The left side that is positioned at annular groove (4) on drillstock (1) is provided with a plurality of hemispherical blind holes (5), and the plurality of hemispherical blind hole (5) circumferentially is uniformly distributed around drillstock (1).
2. Quick replaceable drill bit according to claim 1, is characterized in that, the cross section of drillstock (1) is regular hexagon; Hemispherical blind hole (5) is six, six sides of drillstock (1) hemispherical blind hole (5) that respectively distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204438162U CN203330467U (en) | 2013-07-23 | 2013-07-23 | Drill bit quick to replace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204438162U CN203330467U (en) | 2013-07-23 | 2013-07-23 | Drill bit quick to replace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203330467U true CN203330467U (en) | 2013-12-11 |
Family
ID=49699167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204438162U Expired - Fee Related CN203330467U (en) | 2013-07-23 | 2013-07-23 | Drill bit quick to replace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203330467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236849A (en) * | 2020-03-04 | 2020-06-05 | 邹城兖矿泰德工贸有限公司 | PDC high-strength discharge drill bit |
-
2013
- 2013-07-23 CN CN2013204438162U patent/CN203330467U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236849A (en) * | 2020-03-04 | 2020-06-05 | 邹城兖矿泰德工贸有限公司 | PDC high-strength discharge drill bit |
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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: 20131211 Termination date: 20150723 |
|
| EXPY | Termination of patent right or utility model |