CN201855984U - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- CN201855984U CN201855984U CN201020528476XU CN201020528476U CN201855984U CN 201855984 U CN201855984 U CN 201855984U CN 201020528476X U CN201020528476X U CN 201020528476XU CN 201020528476 U CN201020528476 U CN 201020528476U CN 201855984 U CN201855984 U CN 201855984U
- Authority
- CN
- China
- Prior art keywords
- drill
- drill bit
- drillstock
- positioning slot
- handle
- 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 comprising a drill stem (1) provided with a drill blade (1.1) and a drill handle (2) integrated with the drill stem (1); the tail part of the drill handle (2) is provided with a positioning slot (2.1); and an axially-limited bump (2.1) is formed between the side wall (2.1) at one end of the positioning slot (2.1) away from the drill stem and the end face at the tail end of the drill handle (2). The tail part of the drill handle of the drill bit is provided with a positioning slot, and an axially-limited bump is formed between the side wall at one end of the positioning slot away from the drill stem and the end face at the tail end of the drill handle. when the drill bit is installed, a positioning bolt of the drill bit is clamped in the positioning slot and abuts against the side wall at one end of the positioning slot away from the tail end of the drill stem, thus the drill bit can be reliably positioned. The bump at the tail end of the drill handle plays a role of axial limit so that the drill bit cannot fall from the clamp head; and the drill bit is more convenient to use.
Description
Technical field
The utility model relates to the cutter field, particularly a kind of drill bit.
Background technology
Drill bit generally is made of drilling rod and drillstock two parts, and drillstock part retained part is held on the chuck of lathe or electric tool during use, drives the drill body rotation and work when the output shaft of lathe or electric tool rotates.The drillstock of existing drill bit is generally cylindrical or hexagonal prismoid shape, therefore required in use moment of torsion provides by the frictional force between it and the chuck fully, (having greasy dirt, chuck wearing and tearing etc. to occur as drillstock and chuck faying face) when special status occurring can cause frictional force to descend, the situation that drillstock skids occurs on chuck, bring great inconvenience to use.For this reason, occurred a kind of drill bit on the market, the afterbody of the drillstock of this drill bit is provided with end and is the locating slot of opening, when being sub-packed on the chuck with convenient drill shank, the dog screw of chuck snaps in this locating slot, thereby and leans with the sidewall of this locating slot one end and to carry out spacing to drill bit.But problem is that drill bit is deviate from from the opening part of locating slot easily, and the phenomenon that causes drill bit to come off is used very inconvenience.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of drill bit reliable, difficult drop-off when working of locating is provided.
The technical scheme in the invention for solving the above technical problem is: a kind of drill bit, comprise drilling rod that is provided with drill blade and the drillstock that is solidified as a whole with described drilling rod, the afterbody of described drillstock is provided with detent, and described detent is away from the projection that forms axial limiting between the end face of the sidewall of an end of drilling rod and drillstock end.
Compared with prior art, advantage of the present utility model is: the afterbody of the drillstock of this drill bit is provided with detent, and forms the projection of axial limiting between the end face of drillstock end and the close sidewall of drillstock end of detent.During installation, the dog screw of chuck snaps in the detent, and leans with the sidewall away from an end of drillstock end of detent, thereby drill bit is reliably located.And the projection of drillstock end plays the effect of axial limiting, and drill bit can not come off from chuck, uses convenient.
As preferably, the bottom land of described detent is a plane.Be more conducive to being installed of dog screw like this.
Description of drawings
Accompanying drawing is the structural representation of the utility model drill bit.
In the accompanying drawing: the bottom land of 1 drilling rod, 1.1 drill blades, 2 drillstocks, 2.1 detents, 2.11 sidewalls, 2.12 detents, 2.2 projections, 2.3 end faces.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
As shown in drawings, a kind of drill bit, comprise drilling rod 1 that is provided with drill blade 1.1 and the drillstock 2 that is solidified as a whole with described drilling rod 1, the afterbody of described drillstock 2 is provided with detent 2.1, and described detent is away from the projection 2.2 that forms axial limiting between the end face 2.3 of the sidewall 2.11 of an end of drilling rod and drillstock 2 ends.
In this specific embodiment, the bottom land 2.12 of described detent is a plane.Be more conducive to being installed of dog screw like this.
During installation, the dog screw of chuck snaps in the detent 2.1, and leans with the sidewall away from an end of drillstock end of detent, thereby drill bit is reliably located.And the projection 2.2 of drillstock end plays the effect of axial limiting, and drill bit can not come off from chuck.
The utility model not only is confined to above embodiment, and its concrete structure allows variation.All various variations of being done in the protection domain of the utility model independent claims are all in the utility model protection domain.
Claims (2)
1. drill bit, comprise drilling rod (1) that is provided with drill blade (1.1) and the drillstock (2) that is solidified as a whole with described drilling rod (1), it is characterized in that: the afterbody of described drillstock (2) is provided with detent (2.1), and described detent is away from the projection (2.2) that forms axial limiting between the terminal end face (2.3) of the sidewall (2.11) of an end of drilling rod and drillstock (2).
2. drill bit according to claim 1 is characterized in that: the bottom land of described detent (2.12) is a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020528476XU CN201855984U (en) | 2010-09-10 | 2010-09-10 | Drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020528476XU CN201855984U (en) | 2010-09-10 | 2010-09-10 | Drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201855984U true CN201855984U (en) | 2011-06-08 |
Family
ID=44101802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020528476XU Expired - Fee Related CN201855984U (en) | 2010-09-10 | 2010-09-10 | Drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201855984U (en) |
-
2010
- 2010-09-10 CN CN201020528476XU patent/CN201855984U/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 |
Granted publication date: 20110608 Termination date: 20150910 |
|
| EXPY | Termination of patent right or utility model |