CN204657579U - Rail Hole chamfering drill bit - Google Patents
Rail Hole chamfering drill bit Download PDFInfo
- Publication number
- CN204657579U CN204657579U CN201520306441.4U CN201520306441U CN204657579U CN 204657579 U CN204657579 U CN 204657579U CN 201520306441 U CN201520306441 U CN 201520306441U CN 204657579 U CN204657579 U CN 204657579U
- Authority
- CN
- China
- Prior art keywords
- borehole jack
- bearing
- drilling rod
- drill bit
- cap
- 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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- Earth Drilling (AREA)
Abstract
The utility model provides a kind of rail Hole chamfering drill bit, comprise drilling rod and be installed on the tapered bur cap on drilling rod, the conical surface of described tapered bur cap is provided with alloy cutter head, the front end of described tapered bur cap is provided with a borehole jack, borehole jack inside is provided with bearing, and described bearing comprises bearing inner sleeve, ball and bearing outside, and bearing inner sleeve is fixedly connected with drilling rod, described bearing outside is fixedly connected with borehole jack, and described borehole jack is copper sheathing.The utility model utilizes borehole jack as guider, utilizes bearing to be connected between drilling rod with borehole jack, during chamfering, the tap web of drill bit can be made to be consistent with the axle center in hole all the time, avoid chamfering lateral deviation and bit freezing phenomenon.
Description
Technical field
The utility model relates to tool rail accessory technical field, particularly relates to a kind of rail Hole chamfering drill bit.
Background technology
In railway track docking operation, need to punch on the riser of rail, then in limit, hole chamfering, existing chmfer bit adds by drilling rod, tapered bur cap the alloy cutter head be welded on tapered bur cap and forms, when chamfering, electric hand drill adds chmfer bit, chamfering operation is carried out to limit, hole.In operating process, because the deviation of hand-held angle easily causes chamfering lateral deviation and hole core disalignment, affect chamfer quality, and easy bit freezing during drill bit hand-hole, reduce operating efficiency.Given this, be necessary to provide a kind of new rail Hole chamfering drill bit to solve above-mentioned technical problem.
Summary of the invention
The technical problem that the utility model solves is to provide a kind of rail Hole chamfering drill bit, and itself and electric drill support the use, and efficiently solve the problem of chamfering lateral deviation, has that chamfer quality is good, efficiency is high, easy to use, the simple advantage of structure.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of rail Hole chamfering drill bit, comprise drilling rod and be installed on the tapered bur cap on drilling rod, the conical surface of described tapered bur cap is provided with alloy cutter head, it is characterized in that: the front end of described tapered bur cap is provided with a borehole jack, and borehole jack inside is provided with bearing, and described bearing comprises bearing inner sleeve, ball and bearing outside, bearing inner sleeve is fixedly connected with drilling rod, and described bearing outside is fixedly connected with borehole jack.
Further, described borehole jack is copper sheathing, and its diameter is identical with needing the rail hole internal diameter of chamfering.
Compared with prior art, rail Hole chamfering drill bit described in the utility model, utilizes borehole jack as guider, bearing is utilized to be connected between drilling rod with borehole jack, during chamfering, the tap web of drill bit can be made to be consistent with the axle center in hole all the time, to avoid chamfering lateral deviation and bit freezing phenomenon.
Accompanying drawing explanation
Fig. 1 is the structural representation of rail Hole chamfering drill bit described in the utility model.
Component names corresponding in figure is: 1 drilling rod, 2 tapered bur caps, 3 alloy cutter heads, 4 borehole jacks, 5 bearing inner sleeves, 6 balls, 7 bearing outsides.
Detailed description of the invention
Refer to shown in Fig. 1, the utility model provides a kind of rail Hole chamfering drill bit, comprise drilling rod 1 and be installed on the tapered bur cap 2 on drilling rod, the conical surface of described tapered bur cap 2 is provided with alloy cutter head 3, the front end of described tapered bur cap is provided with a borehole jack 4, and borehole jack inside is provided with bearing, and described bearing comprises bearing inner sleeve 5, ball 6 and bearing outside 7, bearing inner sleeve 5 is fixedly connected with drilling rod 1, and described bearing outside 7 is fixedly connected with borehole jack 4.Described borehole jack is copper sheathing, and its diameter is identical with needing the rail hole internal diameter of chamfering.
Based on the rail Hole chamfering drill bit of said structure design, during use, first borehole jack is put into the rail hole needing chamfering, start electric drill, drive drilling rod 1, tapered bur cap 2 operate, and promote rail Hole chamfering drill bit entirety in operation process and move to hole depth place, borehole jack play the guiding role in rail hole, the tap web of drill bit is consistent with the axle center in hole all the time, avoids chamfering lateral deviation and bit freezing phenomenon.
The above; it is only most preferred embodiment of the present utility model; not any pro forma restriction is done to the utility model; any those of ordinary skill in the art; do not departing under technical solutions of the utility model ambit; utilize the method content of above-mentioned announcement to make many possible variations and modification to technical solutions of the utility model, all belong to the scope of claims protection.
Claims (2)
1. a rail Hole chamfering drill bit, comprise drilling rod and be installed on the tapered bur cap on drilling rod, the conical surface of described tapered bur cap is provided with alloy cutter head, it is characterized in that: the front end of described tapered bur cap is provided with a borehole jack, borehole jack inside is provided with bearing, described bearing comprises bearing inner sleeve, ball and bearing outside, and bearing inner sleeve is fixedly connected with drilling rod, and described bearing outside is fixedly connected with borehole jack.
2. rail Hole chamfering drill bit according to claim 1, is characterized in that: described borehole jack is copper sheathing, and its diameter is identical with needing the rail hole internal diameter of chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306441.4U CN204657579U (en) | 2015-05-13 | 2015-05-13 | Rail Hole chamfering drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306441.4U CN204657579U (en) | 2015-05-13 | 2015-05-13 | Rail Hole chamfering drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204657579U true CN204657579U (en) | 2015-09-23 |
Family
ID=54128014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520306441.4U Expired - Fee Related CN204657579U (en) | 2015-05-13 | 2015-05-13 | Rail Hole chamfering drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204657579U (en) |
-
2015
- 2015-05-13 CN CN201520306441.4U patent/CN204657579U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20160513 |