CN201324851Y - Steel rail drill bit - Google Patents
Steel rail drill bit Download PDFInfo
- Publication number
- CN201324851Y CN201324851Y CNU2008202330913U CN200820233091U CN201324851Y CN 201324851 Y CN201324851 Y CN 201324851Y CN U2008202330913 U CNU2008202330913 U CN U2008202330913U CN 200820233091 U CN200820233091 U CN 200820233091U CN 201324851 Y CN201324851 Y CN 201324851Y
- Authority
- CN
- China
- Prior art keywords
- drill bit
- neck
- steel rail
- rail
- working portion
- 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 relates to a steel rail drill bit, particularly a steel rail drill bit which is especially used for drilling for a bonding plug pin hole of the steel rail. The steel rail drill bit comprises a drill bit shank, a drill bit neck and a drill bit main working part, and is characterized in that: the diameter of the drill bit neck is larger than the diameter of the drill bit main working part; a spiral groove part of the drill bit main working part is located in the region of the drill bit neck; an incline-shaped chamfering working part is arranged on a joint of the drill bit neck and the drill bit main working part. When the bonding plug pin hole is drilled on the steel rail, the drilling operation and the chamfering operation of a steel rail drilling machine can be simultaneously completed so as to improve work efficiency. The drilled bonding plug pin hole is convenient for a plug pin to be hammered into, while the plug pin cannot be damaged.
Description
Technical field
The utility model relates to the spiral bit of using on the piercing machine for rail, particularly is exclusively used in the rail drill bit of being holed in the bond pin hole of rail.
Background technology
Railway is to utilize two parallel rail to transmit track-circuit signalling as conductor at present, and this just need bore the bond pin hole on rail, plug pin is squeezed in this hole, and the plug pin outer end is provided with the fixing point of wiring hole as lead.When on rail, boring the bond pin hole, when traditional rail drill bit bores the bond pin hole on rail, after rail bonding drill is finished boring work, also rail bonding drill must be unloaded, carry out the chamfering operation again, cause the plug pin damage to reduce the drilling of the rail, its operation trouble.
The utility model content
The purpose of this utility model is to provide a kind of rail drill bit, and it can once finish boring and chamfering operation, to increase work efficiency.
The technical scheme that the utility model technical solution problem is taked is: a kind of rail drill bit, comprise drill handle part, drill bit neck and drill bit master working portion, it is characterized in that, described drill bit recess diameter is greater than the diameter of drill bit master working portion, the helicla flute of drill bit master working portion partly is positioned at the drill bit neck area, and drill bit neck and drill bit master working portion junction are provided with inclined plane shape chamfering working portion.
In such scheme, be provided with annular boss between drill bit neck and the drill handle part.
In such scheme, on the drill bit neck between annular boss and the chamfering working portion, be nested with a locating ring.
The beneficial effects of the utility model are: when boring the bond pin hole on rail, rail bonding drill boring is once finished with the chamfering operation, has improved work efficiency; Filling in of plug pin is convenient in the bond pin hole that is got out, and do not damage plug pin.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a front view of the present utility model.
Among the figure: 1 drill handle part, 2 annular boss, 3 drill bit necks, 4 chamfering working portions, 5 drill bit master working portions.
The specific embodiment
As shown in Figure 1.
A kind of rail drill bit comprises that drill handle part 1, drill bit neck 3 and drill bit master working portion 5. drill handle parts 1 are provided with one or more planes, is used to be clamped on the rig and transferring power.
Drill bit neck 3 diameters are greater than the diameter of drill bit master working portion 5, the helicla flute of the drill bit master working portion 5 that is used to hole partly is positioned at the drill bit neck area, drill bit neck and drill bit master working portion junction are provided with inclined plane shape chamfering working portion 4, this part is used for the chamfering that the rail outer end of hole forms bell mouth shape, be provided with annular boss 2 between drill bit neck 3 and the drill handle part 1 and be used for the keyhole degree of depth, can also occur shoulder hole to prevent the rail hole because of the effect of drill bit neck 3 on the drill bit neck between annular boss 2 and the chamfering working portion 4, being nested with a locating ring.
Claims (3)
1, a kind of rail drill bit, comprise drill handle part, drill bit neck and drill bit master working portion, it is characterized in that, described drill bit recess diameter is greater than the diameter of drill bit master working portion, the helicla flute of drill bit master working portion partly is positioned at the drill bit neck area, and drill bit neck and drill bit master working portion junction are provided with inclined plane shape chamfering working portion.
2, rail drill bit according to claim 2 is characterized in that, is provided with annular boss between drill bit neck and the drill handle part.
3, rail drill bit according to claim 3 is characterized in that, is being nested with a locating ring on the drill bit neck between annular boss and the chamfering working portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202330913U CN201324851Y (en) | 2008-12-29 | 2008-12-29 | Steel rail drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202330913U CN201324851Y (en) | 2008-12-29 | 2008-12-29 | Steel rail drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201324851Y true CN201324851Y (en) | 2009-10-14 |
Family
ID=41176829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202330913U Expired - Fee Related CN201324851Y (en) | 2008-12-29 | 2008-12-29 | Steel rail drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201324851Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204372A (en) * | 2017-07-06 | 2019-01-15 | 王荣英 | A kind of Intelligent iron shoe system |
-
2008
- 2008-12-29 CN CNU2008202330913U patent/CN201324851Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204372A (en) * | 2017-07-06 | 2019-01-15 | 王荣英 | A kind of Intelligent iron shoe system |
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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: 20091014 Termination date: 20121229 |