CN203230342U - Diamond thin-wall crown drill - Google Patents
Diamond thin-wall crown drill Download PDFInfo
- Publication number
- CN203230342U CN203230342U CN 201320228921 CN201320228921U CN203230342U CN 203230342 U CN203230342 U CN 203230342U CN 201320228921 CN201320228921 CN 201320228921 CN 201320228921 U CN201320228921 U CN 201320228921U CN 203230342 U CN203230342 U CN 203230342U
- Authority
- CN
- China
- Prior art keywords
- crown
- tool bit
- cutter head
- drill
- transition ring
- 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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Abstract
The utility model discloses a diamond thin-wall crown drill which comprises a drill rod and combined tool bit. The drill rod is provided with a connector and a drill pipe, the combined tool bit comprises a crown tool bit and a transition ring, the crown tool bit is of a circular cylinder structure and is connected with the drill rod by the transition ring, a plurality of U-shaped water grooves which bring convenience for discharging chips and dissipating heat are formed at a cutting end of the crown tool bit, an annular groove which surrounds the center of the crown tool bit is formed at the end, which is connected with the transition ring, of the crown tool bit, and an annular protrusion which is matched with the annular groove is arranged at the end, which is connected with the crown tool bit, of the transition ring. An outwardly oblique inverted conical surface is turned on the annular protrusion on the transition ring, and a matched oblique conical surface is arranged on the annular groove in the crown tool bit. Positioning seam allowance which is matched with the drill rod is turned at the end, which is connected with the drill rod, of the transition ring. The diamond thin-wall crown drill has the advantages that the combined tool bit is stable in quality, and the diamond thin-wall crown drill is simple in machining, forming, sintering and welding processes, high in drilling efficiency and long in service life, can be used for drilling hard rock and can be widely applied to the drilling field.
Description
Technical field
The utility model relates to a kind of diamond drilling instrument, a kind of diamond core drill bit specifically.
Background technology
Thin-walled bores except the installation of the plumbing, hot-water heating and the draft tube liner that are used for construction work, newly-built building and power transmission cable line, also is widely used in the sampling of various geological prospectings, the construction of tunnel, bridge, underground railway, and the rescue of mine disaster, earthquake calamity.Traditional thin-walled bores and has following problem: the first, there is not locating surface when traditional multi-block type cutter head and drilling rod welding, and welding precision is poor, and the circular runout that thin-walled bores is big, increases rocking of thin-walled brill when creeping into, and hole quality is poor, and efficient is low; The second, traditional diamond segment is the mixed powder that various metal powder materials mix with the material of drilling rod weld, and cutting tip is metal dust and diamond particles.During moulding, both easy flushings influence weld strength and cutting ability that thin-walled bores behind the flushing, and the cost height.The 3rd, diamond segment is direct and drilling rod is welded together, because the material of two welding bodies is inconsistent, weld strength is low, run into when creeping into that hard rock or hardness differs greatly creep into face the time fall the phenomenon of cutter head easily, a cutter head has fallen, whole thin-walled brill has just been scrapped.
The utility model content
The utility model technical issues that need to address provide a kind of drilling efficiency height, and hole quality is good, and the thin diamond wall crown that does not fall cutter head bores.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
The thin diamond wall crown bores, the drilling rod that comprises belt lacing and drilling pipe, also comprise dado head, described dado head comprises the crown cutter head that is circular column structure, the transition rings that connects crown cutter head and drilling rod, some U-shaped tanks of being convenient to the chip removal heat radiation are offered in the cutting end of described crown cutter head, the end that the crown cutter head is connected with transition rings is offered the cannelure around the center, and described transition rings cooperates the annular projection of cannelure with the link setting of crown cutter head.
Further improvement of the utility model is: the annular projection turning on the described transition rings has the outward-dipping inverted cone surface that makes progress, and the cannelure on the crown cutter head is offered the scalene cone of cooperation.
Further improvement of the utility model is: the angle between described inverted cone surface and the vertical plane is 3 °～5 °.
Further improvement of the utility model is: an end turning of described transition rings jointed rod cooperates the positioning spigot of drilling rod.
Because the technological progress of having adopted technique scheme, the utility model to obtain is:
The utility model has solved existing thin-walled and has been drilled in pore-forming low precision when cutting, fall shortcomings such as cutter head, application life is short, efficient is low easily, designed dado head steady quality, processing, shaping, sintering, welding procedure are simple, the drilling efficiency height, long service life, energy drilling hard rock is widely used in the probing field.
Crown cutter head of the present utility model is made by the metal dust that mixes and diamond particles, and all-in-one-piece crown cutter head structure has been avoided because the split welding causes the problem that circular runout is big, the thin-walled brill rocks.In metal dust, add diamond particles, improve the sharpness that thin-walled bores.Have U-shaped tank at the crown cutter head, be convenient to heat radiation, chip removal.
Excessive ring of the present utility model adopts and forms with the pipe material machining of the same material of drilling rod, with the link car of crown cutter head the little inverted cone surface of outer imperial palace is arranged, be convenient to the crown cutter head be shaped, sintering, the bonding strength height.
The utility model has solved common diamond segment and the direct weld strength of thin-walled brill drilling rod is low, run in the drilling process that hardness differs greatly creep into face the time cutter head fracture problem, transition rings and crown cutter head can be easy to be processed into Any shape male end or female end after being sintered to one, with the drilling rod accurate in locating, rocking when having reduced to drill, hole quality is good, has improved drilling efficiency and drilling quality, has solved the phenomenon that thin-walled bores cutter head.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the schematic diagram of dado head;
Fig. 4 is the partial enlarged drawing of Fig. 3;
Fig. 5 is the schematic diagram of transition rings;
Fig. 6 is the partial enlarged drawing of Fig. 5.
Wherein, 1, drilling rod, 2, dado head, 21, transition rings, 211, annular projection, 212, positioning spigot, 22, crown cutter head.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further details:
The thin diamond wall crown bores, and as depicted in figs. 1 and 2, comprises drilling rod 1, and the end that drilling rod 1 connects drilling equipment arranges drilling pipe and joint, and the other end of drilling rod 1 is welded with dado head 2.As shown in Figure 3 and Figure 4, described dado head 2 comprises crown cutter head 22 and transition rings 21.Crown cutter head 22 is the column structure of annular for cross section.One end of crown cutter head 22 cylinders is used for cutting, and the other end is used for connecting transition rings 21.The cutting end is provided with some circumferential tanks, and described tank is U-shaped groove structure from axially.Connect an end setting of transition rings 21 around the cannelure of crown cutter head 22 central axis.Seem that from integral body the shape of this cutter head is just as a crown.Corresponding, as Fig. 4～shown in Figure 6, an end that connects the crown cutter head on the transition rings 21 arranges the annular projection 211 that cooperates cannelure.Specific to present embodiment, annular projection 211 turning on the described transition rings 21 have the outward-dipping inverted cone surface that makes progress, and the cannelure on the crown cutter head 22 is offered the scalene cone of cooperation.Angle between described inverted cone surface and the vertical plane is 4 °.One end turning positioning spigot 212 of described transition rings 21 jointed rods cooperates accurately with drilling rod, laser weld is one.
Claims (4)
1. the thin diamond wall crown bores, the drilling rod (1) that comprises belt lacing and drilling pipe, it is characterized in that: also comprise dado head (2), described dado head (2) comprises the crown cutter head (22) that is circular column structure, the transition rings (21) that connects crown cutter head and drilling rod, some U-shaped tanks of being convenient to the chip removal heat radiation are offered in the cutting end of described crown cutter head (22), the end that crown cutter head (22) is connected with transition rings is offered the cannelure around the center, and described transition rings (21) cooperates the annular projection (211) of cannelure with the link setting of crown cutter head.
2. thin diamond wall crown according to claim 1 bores, and it is characterized in that: annular projection (211) turning on the described transition rings (21) has the outward-dipping inverted cone surface that makes progress, and the cannelure on the crown cutter head (22) is offered the scalene cone of cooperation.
3. thin diamond wall crown according to claim 2 bores, and it is characterized in that: the angle between described inverted cone surface and the vertical plane is 3 °～5 °.
4. bore according to each described thin diamond wall crown of claim 1～3, it is characterized in that: an end turning of described transition rings (21) jointed rod cooperates the positioning spigot (212) of drilling rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320228921 CN203230342U (en) | 2013-04-28 | 2013-04-28 | Diamond thin-wall crown drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320228921 CN203230342U (en) | 2013-04-28 | 2013-04-28 | Diamond thin-wall crown drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230342U true CN203230342U (en) | 2013-10-09 |
Family
ID=49286475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320228921 Expired - Fee Related CN203230342U (en) | 2013-04-28 | 2013-04-28 | Diamond thin-wall crown drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005709A (en) * | 2013-09-28 | 2014-08-27 | 葛洲坝老河口水泥有限公司 | Soil sampler used for down-hole drill |
-
2013
- 2013-04-28 CN CN 201320228921 patent/CN203230342U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005709A (en) * | 2013-09-28 | 2014-08-27 | 葛洲坝老河口水泥有限公司 | Soil sampler used for down-hole drill |
| CN104005709B (en) * | 2013-09-28 | 2016-01-20 | 葛洲坝老河口水泥有限公司 | A kind of soil sampler for hidden hole drilling |
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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: 20131009 Termination date: 20200428 |