CN202208065U - Diamond core drill - Google Patents
Diamond core drill Download PDFInfo
- Publication number
- CN202208065U CN202208065U CN2011203155491U CN201120315549U CN202208065U CN 202208065 U CN202208065 U CN 202208065U CN 2011203155491 U CN2011203155491 U CN 2011203155491U CN 201120315549 U CN201120315549 U CN 201120315549U CN 202208065 U CN202208065 U CN 202208065U
- Authority
- CN
- China
- Prior art keywords
- core drill
- drill bit
- diamond core
- helicla flute
- diamond
- 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 - Lifetime
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Abstract
The utility model relates to a diamond core drill, in particular to a diamond core drill which is used in the construction engineering and comprises a joint (1), a tube body (2) and diamond drilling teeth (4), wherein a spiral groove (3) is arranged at the outer surface of the tube body (2) of the diamond core drill. When the diamond core drill works, the exhaust process of the cut slurry can be accelerated under the spiral conveying effect of the spiral groove (3), so that the chip exhaust capability of the drill is improved; and as the grinding wear of the cut chip to the tube body (2) and the diamond drilling teeth (4) is eased, the undercutting phenomenon of the core drill is avoided, the connected strength of the tube body and the drilling teeth is maintained, the drilling efficiency is improved, and the service life of the drill is prolonged.
Description
Technical field
The utility model relates to a kind of diamond core drill bit, the diamond core drill bit that especially a kind of building engineering construction is used.
Background technology
Diamond core drill bit is widely used in the drilling construction of various architectural engineerings as a kind of drilling cutting tool.The diamond core drill bit boring important means of doing the cutting of xoncrete structure static(al), removing also commonly used.Thin diamond wall is drilled in industries such as industrial civil building construction, structure of modification and dismounting and is widely used.
Diamond core drill bit generally has three parts from its structure function: body and the working portion of drill bit---the diamond drill machine tooth on the body end face that the joint that connects with rig, thin-wall steel tube constitute.Drill bit generally adds water-cooled but when carrying out drilling work, it is inner that cooling water flows into the drill bit body by the rig joint, and the diamond drill machine tooth drilling working face of flowing through along the gap between tube wall and the brill core is discharged along the tube wall outer gap again.Cooling water also has the major function of chip removal simultaneously, promptly forms mud with smear metal, and smear metal is washed discharge in the hole.This chip removal process mainly leans on cooling water from boring the tooth working face from bottom to top or from the lining and outer flowing accomplished.
Yet; The chip removal ability of this chip removal mode is not enough during drill bit work; Some thicker chip particles can not be discharged with current at once; And with the thin-walled drilling pipe body of high speed rotary work with bore tooth abrasive action take place always, cause the wearing and tearing attenuation of thin-walled drilling pipe body on the one hand, form " undercut " phenomenon; Working face formation obstruction is being crept in smear metal on the other hand, and additional wear is bored the tooth carcass.Cause a series of ill effects thus, as influence rate of penetration, the reduction bit life is wasted rig power, has reduced the mechanical strength of diamond core drill bit body, and the linking intensity of body and brill tooth, thereby causes the improper inefficacy of diamond core drill bit.
Summary of the invention
The purpose of the utility model provides a kind of novel diamond core drill bit; Can overcome existing the problems referred to above when diamond core drill bit is worked in the prior art; Improve and strengthen its chip removal ability, and alleviate because the various adverse consequences that the chip removal scarce capacity brings.
The utility model achieves the above object through following technical scheme:
A kind of diamond core drill bit comprises joint 1, body 2, diamond drill machine tooth 4, it is characterized in that: the outer surface at said diamond core drill bit body 2 has helicla flute 3.
The work of the creeping into rotation direction that said thin-walled bores is for clockwise, and helicla flute 3 is the dextrorotation rotation direction.
The work of the creeping into rotation direction that said thin-walled bores is for counterclockwise, and helicla flute 3 is left-handed rotation direction.
The lead angle of said helicla flute 3＜15 degree.
The lead angle of said helicla flute 3 is preferably＜10 degree.
The degree of depth of said helicla flute 3 is no more than 80% of body 2 wall thickness.
The spiral quantity of said helicla flute 3 is a kind of in single head, double end, the bull.
The cross sectional shape of said helicla flute 3 is one or more in rectangular channel 31, dovetail groove 32, the deep-slotted chip breaker 33.
The distribution length of said helicla flute 3 on body 2 is less than or equal to the length of said body 2.
Compared with prior art, the beneficial effect of the utility model is:
(1) when the drill bit rotary work, the spiral fluted helical feed effect on the tube wall of the diamond core drill bit that smear metal mud can be through the utility model is accelerated the process that it is discharged outward, thereby is strengthened drill bit chip removal ability.
(2) owing to reduced smear metal; Particularly than rough lumber bits outside and the stop of creeping into working face in the drill bit tube wall; Thereby alleviate the wearing and tearing of smear metal: avoid thin-walled drilling pipe body excessive wear attenuation to form " undercut " phenomenon on the one hand to body and diamond drill machine tooth; The mechanical strength that keeps diamond core drill bit, and the linking intensity of body and brill tooth reduce the improper inefficacy of diamond core drill bit; Reduce smear metal on the other hand to the additional wear of boring the tooth carcass and to the obstruction of the work of creeping into, improve drilling efficiency, prolong the service life of drill bit.
Description of drawings
Fig. 1 is the structural representation of the diamond core drill bit of the utility model.
Fig. 2 is the sectional view of diamond core drill bit rectangular coil groove among embodiment of the utility model.
Fig. 3 is the sectional view of diamond core drill bit trapezoid spiral groove among second embodiment.
Fig. 4 is a diamond core drill bit arc spiral fluted sectional view among the 3rd embodiment.
Reference numeral
1 joint, 2 bodys
3 helicla flutes, 4 diamond drill machine teeth
31 rectangular channels, 32 dovetail grooves
33 deep-slotted chip breakers
The specific embodiment
Below in conjunction with accompanying drawing and embodiment to the utility model further explain.
The utility model preferred embodiment is as shown in Figure 1; A kind of diamond core drill bit comprises joint 1, body 2, diamond drill machine tooth 4, is processed with helicla flute 3 at the outer surface of diamond core drill bit body 2; And the degree of depth of helicla flute 3 is no more than the wall thickness of body 2, preferably is no more than 80% of wall thickness.
In order to realize the helical feed discharge effect of 3 pairs of smear metal mud of helicla flute, the rotation direction of helicla flute 3 is relevant with the work of the creeping into rotation direction that said thin-walled bores, and when being clockwise like the work of the creeping into rotation direction of thin-walled brill, then helicla flute 3 is designed to the dextrorotation rotation direction; When the work of the creeping into rotation direction of boring like thin-walled was counterclockwise, then helicla flute 3 was designed to left-handed rotation direction.
In order to make the chip removal better effects if, the lead angle of helicla flute 3 (lead angle) can not be too big, generally be designed to below 15 degree, and preferably, be below 10 degree.
The cross sectional shape of helicla flute 3 generally can be rectangular channel 31, dovetail groove 32, deep-slotted chip breaker 33 like Fig. 2,3, shown in 4.
The spiral quantity of helicla flute 3 can be single head, double end or bull.
The distribution length of helicla flute 3 on body 2 is less than or equal to the length of said body 2.
Claims (9)
1. a diamond core drill bit comprises joint (1), body (2), diamond drill machine tooth (4), it is characterized in that: the outer surface at said diamond core drill bit body (2) has helicla flute (3).
2. diamond core drill bit according to claim 1 is characterized in that: the work of the creeping into rotation direction that said thin-walled bores is for clockwise, and helicla flute (3) is the dextrorotation rotation direction.
3. diamond core drill bit according to claim 1 is characterized in that: the work of the creeping into rotation direction that said thin-walled bores is for counterclockwise, and helicla flute (3) is left-handed rotation direction.
4. diamond core drill bit according to claim 1 is characterized in that: the lead angle of said helicla flute (3)＜15 degree.
5. diamond core drill bit according to claim 4 is characterized in that: the lead angle of said helicla flute (3) is preferably＜10 degree.
6. diamond core drill bit according to claim 1 is characterized in that: the degree of depth of said helicla flute (3) is no more than 80% of body (2) wall thickness.
7. diamond core drill bit according to claim 1 is characterized in that: the spiral quantity of said helicla flute (3) is a kind of in single head, double end, the bull.
8. diamond core drill bit according to claim 1 is characterized in that: the cross sectional shape of said helicla flute (3) is one or more in rectangular channel (31), dovetail groove (32), the deep-slotted chip breaker (33).
9. diamond core drill bit according to claim 1 is characterized in that: the distribution length of said helicla flute (3) on body (2) is less than or equal to the length of said body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203155491U CN202208065U (en) | 2011-08-26 | 2011-08-26 | Diamond core drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203155491U CN202208065U (en) | 2011-08-26 | 2011-08-26 | Diamond core drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202208065U true CN202208065U (en) | 2012-05-02 |
Family
ID=45987621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203155491U Expired - Lifetime CN202208065U (en) | 2011-08-26 | 2011-08-26 | Diamond core drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202208065U (en) |
-
2011
- 2011-08-26 CN CN2011203155491U patent/CN202208065U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120502 |
|
| CX01 | Expiry of patent term |