CN205021528U - Broken end screw drill bit - Google Patents
Broken end screw drill bit Download PDFInfo
- Publication number
- CN205021528U CN205021528U CN201520746376.7U CN201520746376U CN205021528U CN 205021528 U CN205021528 U CN 205021528U CN 201520746376 U CN201520746376 U CN 201520746376U CN 205021528 U CN205021528 U CN 205021528U
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- drill bit
- broken screw
- rod
- section
- screw drill
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Abstract
The utility model discloses a broken end screw drill bit belongs to electrician's instrument field, solves the inconvenient technical problem that takes out of among prior art broken end screw, the utility model provides a broken end screw drill bit includes the body of rod, set up at the first drill bit of body of rod one end and set up the second drill bit at the body of rod other end, is equipped with the cutting portion that is used for processing drilling on the first drill bit, is equipped with the spiral tooth that is arranged in in drilling tapping interlock on the second drill bit, still is equipped with the scraping mechanism that is used for processing out the chamfer at the top of drilling on the body of rod.
Description
[technical field]
The utility model relates to a kind of broken screw drill bit.
[background technology]
Because the reliability connected is high, simultaneously can dismounting rapidly and efficiently, screw is very extensive as the application of securing member on equipment connection.But in the process of installing connection or dismounting component, screw can break end by the impact of some reason, the flute profile of screw head also can be damaged, and the screw be destroyed cannot exit with screwdriver after occurring by said circumstances, cause equipment to dismantle, impact connects.
[summary of the invention]
The technical problem that the utility model solves is to provide a kind of broken screw drill bit, is convenient to take out broken screw.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of broken screw drill bit, comprise the body of rod, be arranged on first drill bit of described body of rod one end and be arranged on the second drill bit of the described body of rod other end, described first drill bit is provided with the cutting portion for processing boring, described second drill bit is provided with the spiral tooth for the occlusion of tapping in described boring, the described body of rod is also provided with the scraping mechanism for processing chamfering at the top of described boring.
Further, described scraping mechanism comprises be provided with limited block between described first drill bit and the body of rod, and the diameter of described limited block is greater than the diameter of described first drill bit, and described limited block is provided with scraping portion towards described first drill bit side.
Further, described limited block is provided with rounded surface towards described first drill bit side, and described scraping portion comprises the main skiving blade be arranged in rounded surface, rear skiving blade and chip area.
Further, described cutting portion comprises and is arranged on the main cutting edge on described first drill bit, rear cutting edge and chip pocket.
Further, described main skiving blade and main cutting edge are located along the same line.
Further, the periphery of described second drill bit is provided with dregs guiding groove vertically.
Further, the described body of rod comprises middle path section and the large footpath section at two ends, and the diameter of described large footpath section is greater than the diameter of path section.
Further, the cross section of described path section is circular, and the cross section of described large footpath section is hexagon.
Further, the periphery of described path section is provided with groove.
The beneficial effects of the utility model:
Broken screw drill bit of the present utility model, rig drives the first drill bit rotational to process boring on the end face of broken screw, chamfering is processed at the top of boring by scraping mechanism, then pierced in boring by the second drill bit and carry out tapping clamping, second drill bit and bolt are interlocked to drive broken screw to rotate, last outwards dragging gets broken screw drill bit, until screw is removed, can be taken out by broken screw easily.Further, the utility model processes chamfering by scraping mechanism at the top of boring, chamfering the quick position and guiding that facilitate the second drill bit are set, make the second drill bit shoot bore inner more fast and accurately, can more effective broken screw to be taken out.
These features of the present utility model and advantage will detailed description of the invention below, exposure detailed in accompanying drawing.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of broken screw drill bit in the utility model;
Fig. 2 is the top view of broken screw drill bit in the utility model;
Fig. 3 is the upward view of broken screw drill bit in the utility model.
[detailed description of the invention]
The technical scheme of accompanying drawing to the utility model embodiment below in conjunction with the utility model embodiment is explained and illustrated, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiment, all belong to protection domain of the present utility model.
With reference to figure 1, Fig. 2 and Fig. 3, shown a kind of broken screw drill bit, comprise the body of rod 1, one end of the body of rod 1 is provided with the first drill bit 2, the other end of the body of rod 1 is provided with the second drill bit 3, first drill bit 2 is provided with the cutting portion 4 for holing, and the body of rod 1 is also provided with the scraping mechanism for processing chamfering at the top of boring, the second drill bit 3 is provided with the spiral tooth 7 for tapping occlusion in the borehole.Be arranged in the chuck of rig by broken screw drill bit, expose the end of the first drill bit 2, the first drill bit 2 of rotation processes boring at the end face of broken screw, and scraping mechanism processes chamfering at the top of boring.Then broken screw drill bit is taken off from chuck, be reinstalled in the chuck of rig after exchanging direction, expose the end of the second drill bit 3, second drill bit 3 is pierced in boring by spiral tooth 7 and carries out tapping clamping, second drill bit 3 is interlocked to drive broken screw to rotate with broken screw, then the second drill bit 3 is outwards dragged cut-off and removes from equipment to screw.
In the utility model, scraping mechanism comprises be provided with limited block 6 between the first drill bit 2 and the body of rod 1, and the diameter of limited block 6 is greater than the diameter of the first drill bit 2, and limited block 6 is provided with scraping portion 5 towards being provided with the first drill bit 2 side.In the process that first drill bit 2 is holed in broken screw, limited block 6 can limit the depth capacity of the first drill bit 2 drilling, prevents because excessive drilling causes unnecessary waste.Meanwhile, the scraping portion 5 on limited block 6 is utilized to process chamfering at the top of boring.This scraping mechanism can complete the processing of chamfering while rig drives the first drill bit 2, improves the efficiency of work.
With reference to figure 1 and Fig. 2, limited block 6 is provided with rounded surface 61 towards the first drill bit 2 side, scraping portion 5 comprises the main skiving blade 51 be arranged in rounded surface 61, rear skiving blade 52 and chip area 53, limited block 6 rotates with the body of rod 1, main skiving blade 51 on limited block 6 and rear skiving blade 52 process the chamfering corresponding with rounded surface 61 at the top of boring, and chip area 53 utilizes the discharge of chip.
Wherein, the cutting portion 4 on the first drill bit 2 comprises the apex point 44, main cutting edge 41, rear cutting edge 42 and the chip pocket 43 that are arranged on the first drill bit 2.The main cutting edge 41 of the first drill bit 2 is for bearing the maximum cutting force of cutting, and rear cutting edge 42 is for assisted machining, and improve drilling speed, chip pocket 43, for the eliminating of chip during drill bit drilling, makes drilling more rapidly and efficiently.
And above-mentioned main skiving blade 51 and main cutting edge 41 are located along the same line.The work of main skiving blade 51 and main cutting edge 41 is synchronously carried out, improves cutting force, make the rotation of broken screw drill bit in broken screw very smooth and easy, improve the effect of processing.
With reference to figure 1 and Fig. 3, be provided with dregs guiding groove 71 vertically at the periphery of the second drill bit 3.Spiral tooth 7 on second drill bit 3 is for carrying out tapping clamping in the borehole, and available turning moment is comparatively large, to drive broken screw to rotate together, and then is back-outed by broken screw.In the course of work of the second drill bit 3, dregs guiding groove 71 is convenient to the discharge of chip.
With reference to figure 1, the body of rod 1 adopted comprises middle path section 11 and the large footpath section at two ends, large footpath section comprises first footpath section 12 and second largest footpath section 13, first footpath section 12 end arranges the first drill bit 2, the end of second largest footpath section 13 arranges the second drill bit 3, and the diameter of large footpath section is greater than the diameter of path section 11.Setting like this, large footpath section defines step surface 14 towards path section 11 side, and in the disassembly process of the chuck of broken screw drill bit and rig, step surface 14 convenient operation personnel put forth effort, to facilitate the dismounting by broken screw drill bit and drill chuck.Also the first necking down groove 81 is set in first footpath section 12, second largest footpath section 13 is arranged the second necking down groove 82, further facilitate the Fast Installation of the chuck facilitating broken screw drill bit and rig.
In addition, the cross section of path section 11 is circular, to be taken broken screw drill bit by path section 11, is also provided with groove 111 at the periphery in path section 11, to strengthen feel and the frictional force at this position.The cross section of large footpath section is hexagon, can be applicable to the use of all kinds rig, wide application.
By above-described embodiment, the purpose of this utility model is reached by fully effective.The personage being familiar with this technology should be understood that the content that the utility model includes but not limited to accompanying drawing and describes in detailed description of the invention above.Any amendment not departing from function and structure principle of the present utility model all will comprise within the scope of the appended claims.
Claims (9)
1. a broken screw drill bit, comprise the body of rod, be arranged on first drill bit of described body of rod one end and be arranged on the second drill bit of the described body of rod other end, described first drill bit is provided with the cutting portion for processing boring, described second drill bit is provided with the spiral tooth for the occlusion of tapping in described boring, it is characterized in that: the described body of rod is also provided with the scraping mechanism for processing chamfering at the top of described boring.
2. broken screw drill bit as claimed in claim 1, it is characterized in that: described scraping mechanism comprises be provided with limited block between described first drill bit and the body of rod, the diameter of described limited block is greater than the diameter of described first drill bit, and described limited block is provided with scraping portion towards described first drill bit side.
3. broken screw drill bit as claimed in claim 2, it is characterized in that: described limited block is provided with rounded surface towards described first drill bit side, described scraping portion comprises the main skiving blade be arranged in rounded surface, rear skiving blade and chip area.
4. broken screw drill bit as claimed in claim 3, is characterized in that: described cutting portion comprises and is arranged on the main cutting edge on described first drill bit, rear cutting edge and chip pocket.
5. broken screw drill bit as claimed in claim 4, is characterized in that: described main skiving blade and main cutting edge are located along the same line.
6. the broken screw drill bit as described in one of claim 1 to 5, is characterized in that: the periphery of described second drill bit is provided with dregs guiding groove vertically.
7. the broken screw drill bit as described in one of claim 1 to 5, is characterized in that: the described body of rod comprises middle path section and the large footpath section at two ends, and the diameter of described large footpath section is greater than the diameter of path section.
8. broken screw drill bit as claimed in claim 7, is characterized in that: the cross section of described path section is for circular, and the cross section of described large footpath section is hexagon.
9. broken screw drill bit as claimed in claim 8, is characterized in that: the periphery of described path section is provided with groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746376.7U CN205021528U (en) | 2015-09-24 | 2015-09-24 | Broken end screw drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746376.7U CN205021528U (en) | 2015-09-24 | 2015-09-24 | Broken end screw drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205021528U true CN205021528U (en) | 2016-02-10 |
Family
ID=55254093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520746376.7U Active CN205021528U (en) | 2015-09-24 | 2015-09-24 | Broken end screw drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205021528U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015530A (en) * | 2018-09-11 | 2018-12-18 | 山东沃克控制阀有限公司 | A kind of broken bolt provision for disengagement |
| WO2021088284A1 (en) * | 2019-11-06 | 2021-05-14 | 上海钰工机电有限公司 | Screw drilling and taking-out integrated tool |
-
2015
- 2015-09-24 CN CN201520746376.7U patent/CN205021528U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015530A (en) * | 2018-09-11 | 2018-12-18 | 山东沃克控制阀有限公司 | A kind of broken bolt provision for disengagement |
| WO2021088284A1 (en) * | 2019-11-06 | 2021-05-14 | 上海钰工机电有限公司 | Screw drilling and taking-out integrated tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |