CN2413013Y - Split down-the-hole drill bit - Google Patents
Split down-the-hole drill bit Download PDFInfo
- Publication number
- CN2413013Y CN2413013Y CN 00224264 CN00224264U CN2413013Y CN 2413013 Y CN2413013 Y CN 2413013Y CN 00224264 CN00224264 CN 00224264 CN 00224264 U CN00224264 U CN 00224264U CN 2413013 Y CN2413013 Y CN 2413013Y
- Authority
- CN
- China
- Prior art keywords
- drill bit
- head
- tail
- fillet
- afterbody
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000005242 forging Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 239000003610 charcoal Substances 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a split in-hole drill bit with thread rings, which is characterized in that the head and the tail of the drill bit are separated; the inner hole of the head and the outer circle of the tail are lathed with thread grooves, so the head and the tail are connected into integration via the thread rings. The head and the tail can be made of different steel materials with no need of forging. A drill tail is estimated to be matched 3-5 drill bits. The utility model can save steel, reduce drilling cost and provide favorable conditions for users to use and manufacturers to supply goods.
Description
The utility model relates to a kind of drilling tool.
The present down-the-hold drill bit that uses, head and afterbody are overall structure.The drill bit blank will carry out machining again through forging.Drill bit head contact rock very easily weares and teares.Afterbody links to each other with impactor, though not fragile, tail end face bears piston impact, requires to have enough intensity and case hardness.Usually the drill bit afterbody of scrapping is intact substantially, also can continue to use.For saving steel and saving forging process, once adopted undue body structure, drill bit head connects with special thread with afterbody.Find this thread connecting mode by using, after impact screws, its disassemble can't not reached the application target of split drill bit.
The purpose of this utility model provides a kind of " fillet of screw split down-the-hold drill bit ", it is characterized in that drill bit head and afterbody separate, and the outer garden of head endoporus and afterbody car has thread groove, makes it to fuse by the fillet of screw.The fillet of screw forms with circle or diamond wire coiling, adopts loose fit with thread groove, and the fillet of screw can significantly reduce the frictional resistance and the jam-packed power of dashing tight generation when demolition, and demolition work is finished easily.Run off for preventing that landwaste from entering with lubricating grease, sealing mat is equipped with at fillet of screw two ends.
The utility model drill bit head and afterbody can be selected the round steel of unlike material for use, needn't forge.Drill bit head is selected middle charcoal alloy steel for use because of pressing embedding or seting welding carbide; Afterbody bears piston impact, requires enough intensity and case hardness, selects for use the low charcoal alloy steel of high-quality to ooze charcoal and handles.Estimate that but is bored 3～5 drill bits of tail adapted.
The boring of on-the-spot Drilling same diameter can be used the impactor of multiple model, and every kind of impactor requires the size of brill tail all inequality.As adopt the utility model, can be with the drill bit of different brill tail adapted same diameter, the drill bit of also available identical brill tail adapted different-diameter is to reduce the inventory carrying cost of drill bit, and can save steel and reduce the rock drilling cost, supplying with manufacturer for user's use provides advantage.
The utility model embodiment accompanying drawings is as follows:
Fig. 1 fillet of screw split down-the-hold drill bit elevation cross-sectional view.
The cylindrical car of the endoporus of drill bit head 1 and drill bit afterbody 5 has thread groove as shown in Figure 1, and the fillet of screw 3 is contained on the cylindrical of 1 endoporus or 5.Be pre-loaded into sealing ring 2 and 4 before the screw-in, on thread groove, smear a small amount of lubricating grease, in order to loading and unloading.To guarantee after the assembling that drill bit and tail end face are adjacent to.
Fig. 2 fillet of screw elevation
As shown in Figure 2, fillet of screw section is circular, with the plain spring steel wire coiling of charcoal, steel wire two ends chamfered edge.
Claims (2)
1. fillet of screw split down-the-hold drill bit is characterized in that drill bit head (1) and afterbody (5) separate, and the outer garden car of the endoporus of head (1) and afterbody (5) has thread groove, makes it to fuse by the fillet of screw (3).
2. fillet of screw split down-the-hold drill bit as claimed in claim 1 is characterized in that being equipped with sealing ring (2) and (4) between drill bit (1) and afterbody (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00224264 CN2413013Y (en) | 2000-03-01 | 2000-03-01 | Split down-the-hole drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00224264 CN2413013Y (en) | 2000-03-01 | 2000-03-01 | Split down-the-hole drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2413013Y true CN2413013Y (en) | 2001-01-03 |
Family
ID=33588667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00224264 Expired - Fee Related CN2413013Y (en) | 2000-03-01 | 2000-03-01 | Split down-the-hole drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2413013Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101460694B (en) * | 2006-06-07 | 2012-02-08 | 基斯通气钻供应公司 | Multi-sectional percussive drill bit assembly |
| CN102852463A (en) * | 2012-09-27 | 2013-01-02 | 广州市天凿精机机械有限公司 | Rock-drilling drill bit spherical tooth |
| CN103261561A (en) * | 2010-09-22 | 2013-08-21 | 山特维克知识产权股份有限公司 | A rock drill bit and a drilling assembly for percussive rock drilling |
-
2000
- 2000-03-01 CN CN 00224264 patent/CN2413013Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101460694B (en) * | 2006-06-07 | 2012-02-08 | 基斯通气钻供应公司 | Multi-sectional percussive drill bit assembly |
| CN103261561A (en) * | 2010-09-22 | 2013-08-21 | 山特维克知识产权股份有限公司 | A rock drill bit and a drilling assembly for percussive rock drilling |
| CN102852463A (en) * | 2012-09-27 | 2013-01-02 | 广州市天凿精机机械有限公司 | Rock-drilling drill bit spherical tooth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |