CN2649288Y - Lockhole drill - Google Patents
Lockhole drill Download PDFInfo
- Publication number
- CN2649288Y CN2649288Y CN 03276170 CN03276170U CN2649288Y CN 2649288 Y CN2649288 Y CN 2649288Y CN 03276170 CN03276170 CN 03276170 CN 03276170 U CN03276170 U CN 03276170U CN 2649288 Y CN2649288 Y CN 2649288Y
- Authority
- CN
- China
- Prior art keywords
- drill
- point
- screw
- hole drill
- lock hole
- 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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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model provides a locking hole drill which comprises a centering point and a locking hole drill body comprising a cutter body and a drill rod, wherein the centering point is a conical screw point with a screw slot. The conical screw point of the locking hole drill can be used for spiral cutting as well as centering, and the axial force generated by spiral cutting is exactly opposite to the axial force on drilling; thus, total drilling force can be reduced, a drill head can drill forwards successfully, and labor intensity is reduced. The conical screw point is detachably connected with the locking hole drill body. The conical screw point is provided with an extension rod which is inserted in the drill rod from the cutter body, the side surface of the drill rod is provided with a screw hole and a fastening screw, and the side surface of the extension rod is provided with a fastening surface matched with the screw.
Description
Technical field
The utility model relates to a kind of lock hole drill.
Background technology
At present, what be used for punching on timber mainly contains bright mouthful brill, flat-wing driller and lock hole drill, they are referred to as lock hole drill, this drill bit, be provided with the centering point in the center of cutting cutter hub, center when being used for drilling and centre drilling, the centering point is a glut shape, relatively more difficult when drilling, need bigger axial thrust.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of lock hole drill that overcomes above-mentioned defective, for this reason, the utility model is by the following technical solutions: it comprises the centering point and comprises the lock hole drill body of cutting cutter hub and drilling rod that described centering point is the awl spiral shell point of band screw socket.Owing to adopt above technical scheme, bore in use that the spiral shell point can center and can carry out spiral cutting, and the axial force that spiral cutting produces, axial force during just in time with drilling is opposite, therefore can reduce total drill thrust, make drill bit drilling more forward, reduce labor intensity.
Described awl spiral shell point is connected with the lock hole drill body is removable.Like this, can change different awl spiral shell points according to the difference of boring timber, with further performance advantage of the present utility model.
Described awl spiral shell point is provided with extension bar, and extension bar is inserted into drilling rod from the bite body, and the drilling rod side is provided with screw and trip bolt, and the extension bar side is provided with fastening with screw fit.This removable syndeton, fairly simple, convenient, reliable.
Description of drawings
Fig. 1 is the schematic diagram of embodiment 1 of the present utility model.
Fig. 2 is the upward view of embodiment 1 of the present utility model.
Fig. 3 is the schematic diagram of embodiment 2 of the present utility model.
Fig. 4 is the upward view of embodiment 2 of the present utility model.
The specific embodiment
Embodiment 1
With reference to accompanying drawing 1, present embodiment is example with the flat-wing driller, and the utility model comprises the sharp 1a of centering and comprise the lock hole drill body of cutting cutter hub 2a and drilling rod 3a that described centering point is the awl spiral shell point of band screw socket.
Embodiment 2
With reference to accompanying drawing 2,, present embodiment is example with the lock hole drill, utility model comprises the sharp 1b of centering and comprises the lock hole drill body of cutting cutter hub 2b and drilling rod 3b that described centering point is the awl spiral shell point of band screw socket.
Described awl spiral shell point is connected with the lock hole drill body is removable.
Described awl spiral shell point is provided with extension bar 4b, and extension bar is inserted into drilling rod from the bite body, and the drilling rod side is provided with screw 5b and trip bolt 6b, and the extension bar side is provided with fastening 7b with screw fit.
Claims (3)
1, a kind of lock hole drill comprises the centering point and comprises the lock hole drill body that cuts cutter hub and drilling rod, it is characterized in that the awl spiral shell point of described centering point for the band screw socket.
2, a kind of lock hole drill as claimed in claim 1 is characterized in that described awl spiral shell point is connected with the lock hole drill body is removable.
3, a kind of lock hole drill as claimed in claim 2 is characterized in that described awl spiral shell point is provided with extension bar, and extension bar is inserted into drilling rod from the bite body, and the drilling rod side is provided with screw and trip bolt, and the extension bar side is provided with fastening with screw fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276170 CN2649288Y (en) | 2003-07-16 | 2003-07-16 | Lockhole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276170 CN2649288Y (en) | 2003-07-16 | 2003-07-16 | Lockhole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2649288Y true CN2649288Y (en) | 2004-10-20 |
Family
ID=34331563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03276170 Expired - Fee Related CN2649288Y (en) | 2003-07-16 | 2003-07-16 | Lockhole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2649288Y (en) |
-
2003
- 2003-07-16 CN CN 03276170 patent/CN2649288Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041020 Termination date: 20120716 |