CN203330469U - Drill - Google Patents
Drill Download PDFInfo
- Publication number
- CN203330469U CN203330469U CN2013204457233U CN201320445723U CN203330469U CN 203330469 U CN203330469 U CN 203330469U CN 2013204457233 U CN2013204457233 U CN 2013204457233U CN 201320445723 U CN201320445723 U CN 201320445723U CN 203330469 U CN203330469 U CN 203330469U
- Authority
- CN
- China
- Prior art keywords
- drillstock
- annular groove
- drill
- blind hole
- hemispherical blind
- 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
Images
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a drill which can achieve fast replacement while providing reliable axial spacing and peripheral spacing and is not prone to fracture at the position of an annular groove. The drill comprises a drill handle (1), a drill rod (2) and a cutter head (3). Two annular grooves (4) are formed in the drill handle (1), one of the annular grooves is located in the middle of the drill handle (1), the other annular groove is located in the right half portion of the drill handle (1), and the value range of the depth of the annular grooves (4) is a closed interval [3.0mm, 4.75mm]. A plurality of spherical blind holes (5) are formed in the left half portion of the drill handle (1) and evenly distributed in the peripheral direction of the drill handle (1).
Description
Technical field
The utility model relates to the bit technique field, is specifically a kind of drill bit.
Background technology
Current drill bit comprises drillstock, drilling rod, cutter head, drillstock is provided with annular groove, although said structure can also provide certain axial limiting when realizing quick change, axial limiting is not also very reliable, circumferentially not spacing, and existing 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 reliable axial limiting and circumferentially spacing can also be provided when realizing quick change, and at the annular groove place drill bit of easy fracture not.
The technical solution of the utility model is, the utility model drill bit, it comprises drillstock, drilling rod, cutter head, drillstock is provided with annular groove, this annular groove is two, and one of them is positioned at the middle part of drillstock, and another is positioned on the right-hand part of drillstock, the span of the degree of depth of annular groove is closed interval [3.0 millimeters, 4.75 millimeters]; The left side of 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 this annular groove is two, one of them is positioned at the middle part of drillstock, another is positioned on the right-hand part of drillstock, and the span of the degree of depth of annular groove is closed interval [3.0 millimeters, 4.75 millimeters], the left side of drillstock is provided with a plurality of hemispherical blind holes, the plurality of hemispherical blind hole circumferentially is uniformly distributed around drillstock, like this, annular groove is two, and one of them annular groove is located to the middle part of drillstock, and the span of the degree of depth of each annular groove is controlled at [3.0 millimeters of closed intervals, 4.75 millimeter], guaranteed the intensity of annular groove as far as possible, make drill bit that reliable axial limiting also is provided when realizing quick change, and at the annular groove place easy fracture not, and the hemispherical blind hole matches with the elasticity salient point of circumferential distribution on drill chuck and can realize circumferentially spacing to drill bit, can when realizing quick change, also provide reliable axial limiting and circumferentially spacing so the utlity model has, 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 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 drill bit, it comprises drillstock 1, drilling rod 2, cutter head 3, drillstock 1 is provided with annular groove 4, this annular groove 4 is two, one of them is positioned at the middle part of drillstock 1, another is positioned on the right-hand part of drillstock 1, and the span of the degree of depth of annular groove 4 is closed interval [3.0 millimeters, 4.75 millimeters]; The left side of 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 two annular grooves 4 is 3.0 millimeters, and the width of two annular grooves 4 equates.
Claims (2)
1. a drill bit, it comprises drillstock (1), drilling rod (2), cutter head (3), drillstock (1) is provided with annular groove (4), it is characterized in that, this annular groove (4) is two, and one of them is positioned at the middle part of drillstock (1), and another is positioned on the right-hand part of drillstock (1), the span of the degree of depth of annular groove (4) is closed interval [3.0 millimeters, 4.75 millimeters]; The left side of 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. 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 |
|---|---|---|---|
| CN2013204457233U CN203330469U (en) | 2013-07-23 | 2013-07-23 | Drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204457233U CN203330469U (en) | 2013-07-23 | 2013-07-23 | Drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203330469U true CN203330469U (en) | 2013-12-11 |
Family
ID=49699169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204457233U Expired - Fee Related CN203330469U (en) | 2013-07-23 | 2013-07-23 | Drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203330469U (en) |
-
2013
- 2013-07-23 CN CN2013204457233U patent/CN203330469U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USD936117S1 (en) | Step drill bit | |
| CA158444S (en) | Drill core bit | |
| ZA202103194B (en) | Carbide cutter bit with ribbed sides and conical tip | |
| CN203343498U (en) | Drilling bit capable of being fast replaced | |
| CN203330469U (en) | Drill | |
| CN203330467U (en) | Drill bit quick to replace | |
| CN202555873U (en) | Internal cooling twist drill | |
| CN202545601U (en) | Steel ball splitting device of deep groove ball bearing | |
| CN203918761U (en) | Hub bearing inner edge polishing bracing or strutting arrangement for Superfinishing machine | |
| WO2015089515A3 (en) | Matrix fixed cutter drill bits and methods for manufacturing same | |
| CN203330468U (en) | Drill bit | |
| CN104313809A (en) | Needle not easy for falling off of thread | |
| MY181613A (en) | Self-tapping screw and method of manufacturing the same | |
| CN103464793A (en) | Lathe tool | |
| CN203817465U (en) | Drill bit | |
| CN204779958U (en) | Antibiotic profile fiber | |
| CN203804289U (en) | Drill bit | |
| AU201716173S (en) | Driver bit | |
| CN203804288U (en) | Quickly changed drill bit | |
| CN103639488A (en) | Double-head twist drill | |
| CN204140729U (en) | Lathe brake block | |
| CN204267512U (en) | A kind of rocker arm | |
| CN204449428U (en) | Chip-removal drill bit in a kind of | |
| CN201693219U (en) | Socket limiter | |
| CN203651360U (en) | Tire shoulder pattern structure of tire |
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 |