CN203030978U - Drill bit structure - Google Patents
Drill bit structure Download PDFInfo
- Publication number
- CN203030978U CN203030978U CN2012206172008U CN201220617200U CN203030978U CN 203030978 U CN203030978 U CN 203030978U CN 2012206172008 U CN2012206172008 U CN 2012206172008U CN 201220617200 U CN201220617200 U CN 201220617200U CN 203030978 U CN203030978 U CN 203030978U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drill
- bit structure
- polyamide
- fixed part
- 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
Links
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 29
- 238000004049 embossing Methods 0.000 claims abstract description 16
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 12
- 229920000728 polyester Polymers 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 7
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 6
- 125000001072 heteroaryl group Chemical group 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- -1 polytrimethylene terephthalate Polymers 0.000 claims description 6
- 229920003189 Nylon 4,6 Polymers 0.000 claims description 5
- 229920002302 Nylon 6,6 Polymers 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 5
- 239000004695 Polyether sulfone Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920001643 poly(ether ketone) Polymers 0.000 claims description 5
- 229920006111 poly(hexamethylene terephthalamide) Polymers 0.000 claims description 5
- 229920006128 poly(nonamethylene terephthalamide) Polymers 0.000 claims description 5
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 5
- 229920006393 polyether sulfone Polymers 0.000 claims description 5
- 229920002530 polyetherether ketone Polymers 0.000 claims description 5
- 229920006324 polyoxymethylene Polymers 0.000 claims description 5
- 229920002215 polytrimethylene terephthalate Polymers 0.000 claims description 5
- 229920001187 thermosetting polymer Polymers 0.000 claims description 5
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 229920002480 polybenzimidazole Polymers 0.000 claims description 4
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000004697 Polyetherimide Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920002312 polyamide-imide Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920001601 polyetherimide Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- HCITUYXHCZGFEO-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(N)=N1.N=C1NC(=N)NC(=N)N1 HCITUYXHCZGFEO-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012994 photoredox catalyst Substances 0.000 description 1
- 229920003208 poly(ethylene sulfide) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14467—Joining articles or parts of a single article
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Drilling Tools (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Earth Drilling (AREA)
Abstract
The utility model provides a drill bit structure, which comprises a drill edge part and a drill handle part, wherein the drill edge part comprises a body part and a fixed part which is arranged at one end of the body part in an extending way, and the outer surface of the fixed part is provided with embossing grooves; the drill shank is made of engineering plastic, one end of the drill shank is covered with the fixing portion of the drill blade, and the engineering plastic is covered with the embossed groove pattern of the fixing portion. Wherein the hardness of the engineering plastic is more than 20HRC, and the bearing temperature of the engineering plastic is between 100 ℃ and 400 ℃. The drill bit structure has the advantage of reducing material cost.
Description
Technical field
The utility model is about a kind of drill bit structure, particularly a kind of with engineering plastic as the high drill bit structure of drill shank and drill shank and drill lip portion bond strength.
Background technology
Employed drill bit is made by the tungsten carbide material of high rigidity on the general printed circuit board (PCB), no matter early stage drill bit is that drill lip portion or drill shank all are with the one-body molded making of tungsten carbide, because tungsten carbide material acquisition cost costliness, cause the manufacturing cost of drill bit high and can't reduce, more do not have economic benefit.
Present most drill bit is to use stainless steel as drill shank, and the combination variation between stainless steel drill shank and the drill lip portion, wherein a kind of be end face to the welding manner of end face, another kind then forms a groove in drill shank one end, and an end of drill lip portion is inserted in and forms with affixed in the groove.
Yet in recent years, stainless cost also raises gradually, is unfavorable for the production of drill bit manufacturer, and when in a single day drill bit damaged as scrap again, stainless drill shank can't directly be carried out utilizing again with product, and causes the waste of resource.
The utility model content
In order to address the above problem, the purpose of this utility model is to propose a kind of drill bit structure, and wherein combining closely of drill lip portion and drill shank has the good advantage of drill bit structure using character.
Another purpose of the present utility model provides a kind of drill bit structure, has the advantage of saving manpower and time cost on making.
Another purpose of the present utility model provides a kind of drill bit structure, its with high rigidity and resistant to elevated temperatures engineering plastic as drill shank, replace the great number cost that in the past used expensive tungsten carbide or stainless steel to produce as drill shank, therefore have the advantage that reduces material cost.
A purpose more of the present utility model provides a kind of drill bit structure, and its drill lip portion and drill shank all have the characteristic of repetition recycling, meet the demand of environmental protection concept.
In order to achieve the above object, the utility model provides a kind of drill bit structure, comprises: a drill lip portion comprises a body and a fixed part and extends a end in body, and the outer surface of fixed part is formed with the embossing rill; And one drill shank constituted by engineering plastic, the hardness of engineering plastic is greater than 20HRC, and the bearing temperature of engineering plastic is between 100 ℃ to 400 ℃, an end of drill shank coats the fixed part of drill lip portion, and engineering plastic is covered with this embossing rill.
Aforesaid drill bit structure, wherein, this fixed part is round bar shape.
Aforesaid drill bit structure, wherein, this embossing rill is oblique staggered rill.
Aforesaid drill bit structure, wherein, the outer surface of this fixed part is formed with at least one annular ditch, and this project plastic cement fills up this annular ditch.
Aforesaid drill bit structure, wherein, this drill lip portion is made by the tungsten carbide bar.
Aforesaid drill bit structure, wherein, this project plastic cement is polyamide-based, polyesters, polyethers, heteroaromatic polymer, symmetrical polystyrene, poly terephthalic acid 1,4-cyclohexanedimethanoester ester, thermoset plastic, silica gel, epoxy resin or melamine.
Aforesaid drill bit structure, wherein, this is polyamide-based to be polyamide 66, polyamide 46, polyamide 6 T, polyamide 9T, polyamidoimide or polyimides.
Aforesaid drill bit structure, wherein, this polyesters is Merlon, polytrimethylene terephthalate, PA polybutyleneterephthalate or liquid crystal polyester.
Aforesaid drill bit structure, wherein, this polyethers is polyformaldehyde, polyphenylene sulfide, polyether sulfone, polyether-ketone or polyether-ether-ketone.
Aforesaid drill bit structure, wherein, this heteroaromatic polymer is the inferior acid amides of polyethers or polybenzimidazoles.
Aforesaid drill bit structure, wherein, this thermoset plastic is phenolic resins.
Aforesaid drill bit structure, wherein, this drill shank is ejection formation.
Comprehensively above-mentioned, drill bit structure of the present utility model with engineering plastic as drill shank, and cooperate the embossing rill design of the fixed part outer surface of drill lip portion, has the high effect of bonding tightness, with respect to prior art with expensive tungsten carbide or stainless steel as for the drill shank, the utility model possesses the advantage that reduces cost is arranged.Moreover, because the heat resisting temperature of engineering plastic is much smaller than the sintering temperature (being about 1400 ℃) of tungsten carbide, in case damaging, scraps drill bit structure, it can be reclaimed, heat engineering plastic is melted, and isolate drill lip portion, and the engineering plastic after melting simultaneously can further be re-used in the making of drill shank, and the characteristic that this kind repeats recycling has the advantage of saving cost and meeting the environmental protection concept.
Description of drawings
Figure 1 shows that the structural representation of the utility model one embodiment drill bit structure.
The main element label declaration:
10 drill bit structures
12 drill shanks
14 drill lip portions
16 bodies
18 blades
20 fixed parts
22 embossing rills
24 annular ditch
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model:
Figure 1 shows that the structural representation of the utility model one embodiment drill bit structure.In present embodiment, drill bit structure 10 comprises a drill shank 12 and a drill lip portion 14, drill lip portion 14 comprises a body 16, in an embodiment, body 16 1 end outer rims are formed with the blade 18 that can cut or hole, body 16 extends a fixed part 20 away from the end in addition of blade 18, and fixed part 20 outer surfaces are formed with embossing rill 22; Drill shank 12 is made of engineering plastic, one end of drill shank 12 coats the fixed part 20 of drill lip portion 14, and the embossing rill 22 on fixed part 20 surfaces is covered with engineering plastic, and wherein the hardness of engineering plastic is greater than 20HRC, and the bearing temperature of engineering plastic is between 100 ℃ to 400 ℃.
Above-mentioned explanation continues, the fixed part 20 of drill lip portion 14 is round bar shape, embossing rill 22 is formed at fixed part 20 outer surfaces for oblique staggered rill, further, outer surface in fixed part 20 more is formed with annular ditch 24, when drill shank 12 was coated and fixed portion 20, annular ditch 24 also filled up engineering plastic.
Above-mentioned drill lip portion 14 is made by the tungsten carbide bar, and the blade 18 on the body 16 utilizes the machine-shaping of diamond wheel one with the embossing rill 22 on fixed part 20 surfaces with annular ditch 24.Engineering plastic preferably, polyesters polyamide-based for being selected from, polyethers, heteroaromatic polymer, symmetrical polystyrene (syndiotatic Polystrene again, sPS), poly terephthalic acid 1,4-cyclohexanedimethanoester ester (PCT), thermoset plastic such as phenolic resins (Phenolic Resins), silica gel (Silicone), epoxy resin (Epoxy) and melamine (Melamine) one of them, for having high rigidity and resistant to elevated temperatures engineering plastic.
Wherein, polyamide-based comprising: polyamide 66 (Polyamide66, PA66), polyamide 46 (Polyamide46, PA46), polyamide 6 T (Polyamide6T, PA6T), polyamide 9T (Polyamide9T, PA9T), polyamidoimide (Polyamide-imide, PAI) and polyimides (Aurum, TPI).
Polyesters comprises: Merlon (Polycarbonate, PC), polytrimethylene terephthalate (Polytrimethylene Terephthalate, PTT), PA polybutyleneterephthalate (Polybutylene terephthalate, PBT) and liquid crystal polyester (Liquid crystalpoly polymers, LCP).
Polyethers comprises polyformaldehyde (Polyoxymethylene, POM), polyphenylene sulfide (Polyphenlene sulfide, PPS), polyether sulfone (Polyethersulfone, PES), polyether-ketone (Polyetherketone, PEK) and polyether-ether-ketone (Polyetheretherketone, PEEK).
The heteroaromatic polymer comprises: the inferior acid amides of polyethers (Polyetherimide, PEI) and polybenzimidazoles (Polybenzoimidazole, PBI).
In an embodiment, the drill shank 12 that engineering plastic constitutes is that the fixed part 20 with injection molding method and drill lip portion 14 is consolidated, wherein engineering plastic is covered with embossing rill 22 and the annular ditch 24 of fixed part 20 outer surfaces, and then the bond strength of increase fixed part 20 and drill shank 12, wherein the design of embossing rill 22 can effectively prevent from producing between drill lip portion 14 and the drill shank 12 relative twist motion, and the design of annular ditch 24 more can prevent the relative slip between drill lip portion 14 and the drill shank 12, has the high advantage of drill bit structure 10 using characters.The injection molding method drill bit structures 10 that more can batch carry out most amounts are made again, so as to saving human cost and time cost.
On the other hand, in the utility model, can replace as drill shank 12 with high rigidity and resistant to elevated temperatures engineering plastic and use expensive tungsten carbide or stainless steel as the great number cost that drill shank was produced in the past, and then have the advantage that reduces material cost.Moreover, because the heat resisting temperature of engineering plastic is much smaller than the sintering temperature (being about 1400 ℃) of tungsten carbide, in case damaging, scraps drill bit structure 10, it can be reclaimed, heat engineering plastic is melted, and isolate drill lip portion 14, and the engineering plastic after melting simultaneously can further be re-used in the making of drill shank 12, and the characteristic that this kind repeats recycling has the advantage of saving cost and meeting the environmental protection concept.
Comprehensively above-mentioned, drill bit structure of the present utility model with engineering plastic as drill shank, and cooperate the embossing rill design of the fixed part outer surface of drill lip portion, has the high effect of bonding tightness, with respect to prior art with expensive tungsten carbide or stainless steel as for the drill shank, the utility model possesses the advantage that reduces cost is arranged.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (12)
1. a drill bit structure is characterized in that, this drill bit structure comprises:
One drill lip portion comprises a body and a fixed part and extend a end in this body, and the outer surface of this fixed part is formed with the embossing rill; And
One drill shank, the engineering plastic between 100 ℃ to 400 ℃ is constituted greater than 20HRC and bearing temperature by hardness, and an end of this drill shank coats this fixed part of this drill lip portion, and this project plastic cement is covered with this embossing rill.
2. drill bit structure as claimed in claim 1 is characterized in that, this fixed part is round bar shape.
3. drill bit structure as claimed in claim 1 is characterized in that, this embossing rill is oblique staggered rill.
4. drill bit structure as claimed in claim 1 is characterized in that, the outer surface of this fixed part is formed with at least one annular ditch, and this project plastic cement fills up this annular ditch.
5. drill bit structure as claimed in claim 1 is characterized in that, this drill lip portion is made by the tungsten carbide bar.
6. drill bit structure as claimed in claim 1, it is characterized in that, this project plastic cement is polyamide-based, polyesters, polyethers, heteroaromatic polymer, symmetrical polystyrene, poly terephthalic acid 1,4-cyclohexanedimethanoester ester, thermoset plastic, silica gel, epoxy resin or melamine.
7. drill bit structure as claimed in claim 6 is characterized in that, this is polyamide-based to be polyamide 66, polyamide 46, polyamide 6 T, polyamide 9T, polyamidoimide or polyimides.
8. drill bit structure as claimed in claim 6 is characterized in that, this polyesters is Merlon, polytrimethylene terephthalate, PA polybutyleneterephthalate or liquid crystal polyester.
9. drill bit structure as claimed in claim 6 is characterized in that, this polyethers is polyformaldehyde, polyphenylene sulfide, polyether sulfone, polyether-ketone or polyether-ether-ketone.
10. drill bit structure as claimed in claim 6 is characterized in that, this heteroaromatic polymer is the inferior acid amides of polyethers or polybenzimidazoles.
11. drill bit structure as claimed in claim 6 is characterized in that, this thermoset plastic is phenolic resins.
12. drill bit structure as claimed in claim 1 is characterized in that, this drill shank is ejection formation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101119544 | 2012-05-31 | ||
| TW101119544A TW201347949A (en) | 2012-05-31 | 2012-05-31 | Manufacturing method of drill structure and drill structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203030978U true CN203030978U (en) | 2013-07-03 |
Family
ID=48683119
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206172008U Expired - Lifetime CN203030978U (en) | 2012-05-31 | 2012-11-20 | Drill bit structure |
| CN2012104722332A Pending CN103447590A (en) | 2012-05-31 | 2012-11-20 | Method for manufacturing drill bit structure and drill bit structure |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104722332A Pending CN103447590A (en) | 2012-05-31 | 2012-11-20 | Method for manufacturing drill bit structure and drill bit structure |
Country Status (4)
| Country | Link |
|---|---|
| JP (2) | JP3182363U (en) |
| KR (1) | KR20130135082A (en) |
| CN (2) | CN203030978U (en) |
| TW (1) | TW201347949A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447590A (en) * | 2012-05-31 | 2013-12-18 | 创国兴业有限公司 | Method for manufacturing drill bit structure and drill bit structure |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368849A (en) * | 2013-08-14 | 2015-02-25 | 铠钜科技股份有限公司 | Welded rod and tool |
| US20240024968A1 (en) * | 2022-07-21 | 2024-01-25 | Ab Sandvik Coromant | Thermoset body countersink |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4135847A (en) * | 1977-08-29 | 1979-01-23 | Tulon, Inc. | Composite drill for drilling circuit boards |
| US6511265B1 (en) * | 1999-12-14 | 2003-01-28 | Ati Properties, Inc. | Composite rotary tool and tool fabrication method |
| CN102189257A (en) * | 2010-03-10 | 2011-09-21 | 钟淼芳 | Powder sintering forming method for cutting tool and cutting body thereof |
| TW201347949A (en) * | 2012-05-31 | 2013-12-01 | Tct Global Ltd | Manufacturing method of drill structure and drill structure |
-
2012
- 2012-05-31 TW TW101119544A patent/TW201347949A/en unknown
- 2012-11-20 CN CN2012206172008U patent/CN203030978U/en not_active Expired - Lifetime
- 2012-11-20 CN CN2012104722332A patent/CN103447590A/en active Pending
-
2013
- 2013-01-08 JP JP2013000052U patent/JP3182363U/en not_active Expired - Lifetime
- 2013-01-08 JP JP2013001279A patent/JP5677471B2/en active Active
- 2013-05-23 KR KR1020130058130A patent/KR20130135082A/en active Search and Examination
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447590A (en) * | 2012-05-31 | 2013-12-18 | 创国兴业有限公司 | Method for manufacturing drill bit structure and drill bit structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013248877A (en) | 2013-12-12 |
| CN103447590A (en) | 2013-12-18 |
| JP3182363U (en) | 2013-03-21 |
| JP5677471B2 (en) | 2015-02-25 |
| TW201347949A (en) | 2013-12-01 |
| KR20130135082A (en) | 2013-12-10 |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |